AUB / Atlantic Union Bankshares Corporation - Pengajuan SECLaporan Tahunan, Pernyataan Proksi

Atlantic Union Bankshares Corporation
US ˙ NYSE ˙ US04911A1079

Mga Batayang Estadistika
LEI 5493008KOJ0RW0T75244
CIK 883948
SEC Filings
All companies that sell securities in the United States must register with the Securities and Exchange Commission (SEC) and file reports on a regular basis. These reports include company annual reports (10K, 10Q), news updates (8K), investor presentations (found in 8Ks), insider trades (form 4), ownership reports (13D, and 13G), and reports related to the specific securities sold, such as registration statements and prospectus. This page shows recent SEC filings related to Atlantic Union Bankshares Corporation
SEC Filings (Chronological Order)
Halaman ini menyediakan daftar lengkap dan kronologis dari Pengajuan SEC, tidak termasuk pengajuan kepemilikan yang kami sediakan di tempat lain.
August 5, 2025 EX-10.4

Form of Performance Share Unit Agreement under the Atlantic Union Bankshares Corporation 2025 Stock and Incentive Plan (for awards with a relative TSR performance measure granted on or after May 6, 2025).

Exhibit 10.4 FORM OF ATLANTIC UNION BANKSHARES CORPORATION PERFORMANCE SHARE UNIT AGREEMENT Granted <> This Performance Share Unit Agreement (this “Agreement”) is entered into pursuant to Article X of the Atlantic Union Bankshares Corporation 2025 Stock and Incentive Plan, as amended from time to time (the “Plan”), and evidences the grant, and the terms, conditions and restrictions pertaining ther

August 5, 2025 EX-31.01

Certification of Principal Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

Exhibit 31.1 Certification of Principal Executive Officer Pursuant to Exchange Act Rule 13a-14(a)/15d-14(a) as Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 I, John C. Asbury, certify that: 1. I have reviewed this quarterly report on Form 10-Q of Atlantic Union Bankshares Corporation; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact

August 5, 2025 EX-10.5

Form of Time-Based Restricted Stock Agreement under the Atlantic Union Bankshares 2025 Corporation Stock and Incentive Plan (for awards on or after May 6, 2025).

Exhibit 10.5 FORM OF ATLANTIC UNION BANKSHARES CORPORATION TIME-BASED RESTRICTED STOCK AGREEMENT Granted <> This Time-Based Restricted Stock Agreement (this “Agreement”) is entered into pursuant to Article VII of the Atlantic Union Bankshares Corporation 2025 Stock and Incentive Plan, as amended from time to time (the “Plan”), and evidences the grant, and the terms, conditions and restrictions per

August 5, 2025 EX-15.01

Letter regarding unaudited interim financial information.

Exhibit 15.1 The Shareholders and Board of Directors of Atlantic Union Bankshares Corporation: We are aware of the incorporation by reference in the Registration Statements (Form S-8 No. 333-287459, Form S-8 No. 333-286298, Form S-3ASR No. 333-281290, Form S-3 No. 333-102012, Form S-3 No. 333-81199, Form S-8 No. 333-255994, Form S-8 No. 333-203580, Form S-8 No. 333-193364, Form S-8 No. 333-175808,

August 5, 2025 EX-10.6

Form of Performance Share Unit Agreement under the Atlantic Union Bankshares Corporation 2025 Stock and Incentive Plan (for awards with a relative core ROATCE performance measure granted on or after May 6, 2025).

Exhibit 10.6 FORM OF ATLANTIC UNION BANKSHARES CORPORATION PERFORMANCE SHARE UNIT AGREEMENT Granted <> This Performance Share Unit Agreement (this “Agreement”) is entered into pursuant to Article X of the Atlantic Union Bankshares Corporation 2025 Stock and Incentive Plan, as amended from time to time (the “Plan”), and evidences the grant, and the terms, conditions and restrictions pertaining ther

August 5, 2025 EX-32.01

Certification of Principal Executive Officer and Principal Financial and Accounting Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

Exhibit 32.1 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350 AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Quarterly Report of Atlantic Union Bankshares Corporation (the “Company”) on Form 10-Q for the quarter ended June 30, 2025 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), the undersigned Chief Executive Off

August 5, 2025 EX-31.02

Certification of Principal Financial and Accounting Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

Exhibit 31.2 Certification of Principal Financial Officer Pursuant to Exchange Act Rule 13a-14(a)/15d-14(a) as Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 I, Robert M. Gorman, certify that: 1. I have reviewed this quarterly report on Form 10-Q of Atlantic Union Bankshares Corporation; 2. Based on my knowledge, this report does not contain any untrue statement of a material fa

August 5, 2025 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended June 30, 2025 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File Number: 001-39325 ATLANTIC UNION BANKSHARES CORPORATION

August 1, 2025 8-K

Regulation FD Disclosure, Financial Statements and Exhibits

United States SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 1, 2025 ATLANTIC UNION BANKSHARES CORPORATION (Exact name of registrant as specified in its charter) Virginia 001-39325 54-1598552 (State or other jurisdiction (Commission (I.R

August 1, 2025 EX-99.1

2 FORWARD-LOOKING STATEMENTS This presentation and statements by our management may constitute “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. Forward-looking statements are statements that inc

Exhibit 99.1 INVESTOR PRESENTATION NYSE: AUB AUGUST – SEPTEMBER 2025 2 FORWARD-LOOKING STATEMENTS This presentation and statements by our management may constitute “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. Forward-looking statements are statements that include, without limitation, statements regarding our recently completed acquisition

July 24, 2025 EX-99.1

Atlantic Union Bankshares Corporation Declares Quarterly Common Stock Dividend and Preferred Stock Dividend

‌ Exhibit 99.1 Atlantic Union Bankshares Corporation Declares Quarterly Common Stock Dividend and Preferred Stock Dividend Richmond, Va., July 24, 2025 – The Board of Directors (the “Board”) of Atlantic Union Bankshares Corporation (the “Company”) has declared a quarterly dividend of $0.34 per share of common stock, which is the same as the second quarter of 2025 and a $0.02, or an approximately 6

July 24, 2025 8-K

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

United States SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 24, 2025 ATLANTIC UNION BANKSHARES CORPORATION (Exact name of registrant as specified in its charter) Virginia 001-39325 54-1598552 (State or other jurisdiction (Commission (I.R.

July 24, 2025 EX-99.2

2 FORWARD-LOOKING STATEMENTS This presentation and statements by our management may constitute “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. Forward-looking statements are statements that inc

Exhibit 99.2 Q2 2025 EARNINGS PRESENTATION NYSE: AUB JULY 24, 2025 2 FORWARD-LOOKING STATEMENTS This presentation and statements by our management may constitute “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. Forward-looking statements are statements that include, without limitation, statements regarding our recently completed acquisition o

July 24, 2025 EX-99.1

ATLANTIC UNION BANKSHARES REPORTS SECOND QUARTER FINANCIAL RESULTS

Exhibit 99.1 Contact: Robert M. Gorman - (804) 523-7828 Executive Vice President / Chief Financial Officer ATLANTIC UNION BANKSHARES REPORTS SECOND QUARTER FINANCIAL RESULTS Richmond, Va., July 24, 2025 – Atlantic Union Bankshares Corporation (the “Company” or “Atlantic Union”) (NYSE: AUB) reported net income available to common shareholders of $16.8 million and both basic and diluted earnings per

July 24, 2025 8-K

Financial Statements and Exhibits, Other Events

United States SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 24, 2025 ATLANTIC UNION BANKSHARES CORPORATION (Exact name of registrant as specified in its charter) Virginia 001-39325 54-1598552 (State or other jurisdiction (Commission (I.R.

July 2, 2025 8-K

Financial Statements and Exhibits, Other Events

United States SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 2, 2025 ATLANTIC UNION BANKSHARES CORPORATION (Exact name of registrant as specified in its charter) Virginia 001-39325 54-1598552 (State or other jurisdiction (Commission (I.R.S

July 2, 2025 EX-99.1

Atlantic Union Bankshares Corporation To Release Second Quarter 2025 Financial Results

EX-99.1 2 aub-20250702xex99d1.htm EX-99.1 Exhibit 99.1 Atlantic Union Bankshares Corporation To Release Second Quarter 2025 Financial Results Richmond, Va., July 2, 2025 – Atlantic Union Bankshares Corporation (the “Company”) today announced that it will release second quarter 2025 financial results before the market opens on Thursday, July 24, 2025. Following the release, the Company will host a

June 26, 2025 8-K

Regulation FD Disclosure, Financial Statements and Exhibits, Other Events

United States SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 26, 2025 ATLANTIC UNION BANKSHARES CORPORATION (Exact name of registrant as specified in its charter) Virginia 001-39325 54-1598552 (State or other jurisdiction (Commission (I.R.

June 26, 2025 EX-99.1

Atlantic Union Bank Closes Sale of Approximately $2 Billion of Commercial Real Estate Loans to Blackstone

Exhibit 99.1 Atlantic Union Bank Closes Sale of Approximately $2 Billion of Commercial Real Estate Loans to Blackstone Richmond, Va. & New York, June 26, 2025 – Atlantic Union Bankshares Corporation (NYSE: AUB) (“Atlantic Union”), the holding company for Atlantic Union Bank (the “Bank”), and Blackstone (NYSE: BX) jointly announced today the closing of the sale of approximately $2 billion of the Ba

May 22, 2025 8-K

Regulation FD Disclosure, Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

United States SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 20, 2025 ATLANTIC UNION BANKSHARES CORPORATION (Exact name of registrant as specified in its charter) Virginia 001-39325 54-1598552 (State or other jurisdiction (Commission (I.R.S

May 22, 2025 EX-99.1

Atlantic Union Bankshares Announces Planned Retirement of Robert M. Gorman, EVP and Chief Financial Officer

Exhibit 99.1 Atlantic Union Bankshares Announces Planned Retirement of Robert M. Gorman, EVP and Chief Financial Officer Richmond, Va., May 22, 2025 – Atlantic Union Bankshares Corporation (“Atlantic Union”) today announced the planned retirement of Robert M. Gorman, executive vice president and chief financial officer of Atlantic Union and Atlantic Union Bank, which is expected to occur on or bef

May 21, 2025 EX-15.1

Acknowledgment of Ernst & Young, LLP (filed herewith).

Exhibit 15.1 To the Shareholders and the Board of Directors of Atlantic Union Bankshares Corporation: We are aware of the incorporation by reference in the Registration Statement (Form S-8) pertaining to the 2025 Atlantic Union Bankshares Corporation Stock and Incentive Plan of our report dated May 7, 2025 relating to the unaudited consolidated interim financial statements of Atlantic Union Banksh

May 21, 2025 EX-FILING FEES

Filing Fee Table (filed herewith).

Calculation of Filing Fee Tables S-8 Atlantic Union Bankshares Corp Table 1: Newly Registered Securities Security Type Security Class Title Fee Calculation Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee 1 Equity Common Stock, par value $1.

May 21, 2025 S-8

As filed with the Securities and Exchange Commission on May 21, 2025

As filed with the Securities and Exchange Commission on May 21, 2025 Registration No.

May 21, 2025 8-K/A

Financial Statements and Exhibits

/A United States SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K/A (Amendment No. 2) CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 21, 2025 (April 1, 2025) ATLANTIC UNION BANKSHARES CORPORATION (Exact name of registrant as specified in its charter) Virginia 001-39325 54-1598552 (State o

May 21, 2025 EX-99.1

Report of Independent Registered Public Accounting Firm

Exhibit 99.1 Report of Independent Registered Public Accounting Firm To the Stockholders and the Board of Directors of Sandy Spring Bancorp, Inc. Opinion on Internal Control Over Financial Reporting We have audited Sandy Spring Bancorp, Inc. and subsidiaries’ internal control over financial reporting as of December 31, 2024, based on criteria established in Internal Control—Integrated Framework is

May 21, 2025 EX-99.2

UNAUDITED PRO FORMA CONDENSED COMBINED FINANCIAL INFORMATION

Exhibit 99.2 UNAUDITED PRO FORMA CONDENSED COMBINED FINANCIAL INFORMATION Introduction On April 1, 2025, Atlantic Union Bankshares Corporation (“Atlantic Union”) completed its previously announced merger (the “merger”) with Sandy Spring Bancorp, Inc. (“Sandy Spring”), pursuant to the Agreement and Plan of Merger, dated as of October 21, 2024, by and between Atlantic Union and Sandy Spring. At the

May 13, 2025 EX-99.1

2 FORWARD-LOOKING STATEMENTS This presentation and statements by our management may constitute “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. Forward-looking statements are statements that inc

Exhibit 99.1 INVESTOR PRESENTATION NYSE: AUB MAY – JUNE 2025 2 FORWARD-LOOKING STATEMENTS This presentation and statements by our management may constitute “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. Forward-looking statements are statements that include, without limitation, statements regarding our recently completed acquisition of Sand

May 13, 2025 8-K

Regulation FD Disclosure, Financial Statements and Exhibits

United States SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 13, 2025 ATLANTIC UNION BANKSHARES CORPORATION (Exact name of registrant as specified in its charter) Virginia 001-39325 54-1598552 (State or other jurisdiction (Commission (I.R.S

May 13, 2025 8-K

Regulation FD Disclosure, Financial Statements and Exhibits, Other Events

United States SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 13, 2025 ATLANTIC UNION BANKSHARES CORPORATION (Exact name of registrant as specified in its charter) Virginia 001-39325 54-1598552 (State or other jurisdiction (Commission (I.R.S

May 13, 2025 EX-99.1

Atlantic Union Bankshares Announces Appointment of Bradley S. Haun as Chief Risk Officer

Exhibit 99.1 Atlantic Union Bankshares Announces Appointment of Bradley S. Haun as Chief Risk Officer Richmond, Va., May 13, 2025 – Atlantic Union Bankshares Corporation (“Atlantic Union”) announced the appointment of Bradley S. Haun as chief risk officer of Atlantic Union and Atlantic Union Bank. Mr. Haun succeeds Sherry Williams, who will retire on July 1, 2025. Ms. Williams is currently serving

May 8, 2025 8-K/A

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

/A United States SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K/A Amendment No. 1 CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 6, 2025 (April 1, 2025) ATLANTIC UNION BANKSHARES CORPORATION (Exact name of registrant as specified in its charter) Virginia 001-39325 54-1598552 (State or o

May 7, 2025 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended March 31, 2025 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File Number: 001-39325 ATLANTIC UNION BANKSHARES CORPORATIO

May 7, 2025 EX-15.1

Letter regarding unaudited interim financial information.

Exhibit 15.1 The Shareholders and Board of Directors of Atlantic Union Bankshares Corporation: We are aware of the incorporation by reference in the Registration Statements (Form S-8 No. 333-286298, Form S-3ASR No. 333-281290, Form S-3 No. 333-102012, Form S-3 No. 333-81199, Form S-8 No. 333-255994, Form S-8 No. 333-203580, Form S-8 No. 333-193364, Form S-8 No. 333-175808, Form S-8 No. 333-113842,

May 6, 2025 EX-99.1

2 FORWARD-LOOKING STATEMENTS This presentation and statements by our management may constitute “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. Forward-looking statements are statements that inc

Exhibit 99.1 Annual Shareholders’ Meeting NYSE: AUB MAY 6, 2025 2 FORWARD-LOOKING STATEMENTS This presentation and statements by our management may constitute “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. Forward-looking statements are statements that include, without limitation, statements regarding our recently completed acquisition of S

May 6, 2025 EX-99.1

Atlantic Union Bankshares Corporation Declares Quarterly Common Stock Dividend and Preferred Stock Dividend

‌ Exhibit 99.1 Atlantic Union Bankshares Corporation Declares Quarterly Common Stock Dividend and Preferred Stock Dividend Richmond, Va., May 6, 2025 – The Board of Directors (the “Board”) of Atlantic Union Bankshares Corporation (the “Company”) has declared a quarterly dividend of $0.34 per share of common stock, which is the same as the first quarter of 2025 and a $0.02, or an approximately 6%,

May 6, 2025 8-K

Financial Statements and Exhibits, Other Events

United States SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 6, 2025 ATLANTIC UNION BANKSHARES CORPORATION (Exact name of registrant as specified in its charter) Virginia 001-39325 54-1598552 (State or other jurisdiction (Commission (I.R.S.

May 6, 2025 8-K

Regulation FD Disclosure, Financial Statements and Exhibits

United States SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 6, 2025 ATLANTIC UNION BANKSHARES CORPORATION (Exact name of registrant as specified in its charter) Virginia 001-39325 54-1598552 (State or other jurisdiction (Commission (I.R.S.

May 6, 2025 EX-10.1

Atlantic Union Bankshares Corporation 2025 Stock and Incentive Plan (incorporated by reference to Exhibit 10.1 to Current Report on Form 8-K filed on May 6, 2025).

Exhibit 10.1 ATLANTIC UNION BANKSHARES CORPORATION 2025 STOCK AND INCENTIVE PLAN ARTICLE I Establishment, Purpose and Duration 1.1Establishment of the Plan. Atlantic Union Bankshares Corporation, a Virginia corporation, hereby sets forth the terms of the Atlantic Union Bankshares Corporation 2025 Stock and Incentive Plan. The Plan shall be effective as of May 6, 2025, subject to the approval of th

May 6, 2025 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits, Submission of Matters to a Vote of Security Holders

United States SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 6, 2025 ATLANTIC UNION BANKSHARES CORPORATION (Exact name of registrant as specified in its charter) Virginia 001-39325 54-1598552 (State or other jurisdiction (Commission (I.R.S.

April 24, 2025 EX-99.2

2 FORWARD-LOOKING STATEMENTS This presentation and statements by our management may constitute “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. Forward-looking statements are statements that inc

Exhibit 99.2 Q1 2025 EARNINGS PRESENTATION NYSE: AUB APRIL 24, 2025 2 FORWARD-LOOKING STATEMENTS This presentation and statements by our management may constitute “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. Forward-looking statements are statements that include, without limitation, statements regarding our recently completed acquisition

April 24, 2025 8-K

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

United States SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 24, 2025 ATLANTIC UNION BANKSHARES CORPORATION (Exact name of registrant as specified in its charter) Virginia 001-39325 54-1598552 (State or other jurisdiction (Commission (I.R

April 24, 2025 EX-99.1

ATLANTIC UNION BANKSHARES REPORTS FIRST QUARTER FINANCIAL RESULTS

Exhibit 99.1 Contact: Robert M. Gorman - (804) 523-7828 Executive Vice President / Chief Financial Officer ATLANTIC UNION BANKSHARES REPORTS FIRST QUARTER FINANCIAL RESULTS Richmond, Va., April 24, 2025 – Atlantic Union Bankshares Corporation (the “Company” or “Atlantic Union”) (NYSE: AUB) reported net income available to common shareholders of $46.9 million and basic and diluted earnings per comm

April 1, 2025 S-8

As filed with the Securities and Exchange Commission on April 1, 2025

As filed with the Securities and Exchange Commission on April 1, 2025 Registration No.

April 1, 2025 EX-FILING FEES

Filing Fee Table (filed herewith)

Calculation of Filing Fee Tables S-8 Atlantic Union Bankshares Corp Table 1: Newly Registered Securities Security Type Security Class Title Fee Calculation Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee 1 Equity Common Stock, par value $1.

April 1, 2025 8-K

Regulation FD Disclosure, Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant, Completion of Acquisition or Disposition of Assets, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (date of earliest event reported): April 1, 2025 ATLANTIC UNION BANKSHARES CORPORATION (Exact name of registrant as specified in its charter) Virginia 001-39325 54-1598552 (State or other jurisdiction of (Commission (I

April 1, 2025 EX-10.1

Consulting Agreement, effective as of April 1, 2025, by and between Atlantic Union Bankshares Corporation and Daniel J. Schrider (incorporated by reference to Exhibit 10.1 to Current Report on Form 8-K filed on April 1, 2025).

Exhibit 10.1 CONSULTING AGREEMENT THIS CONSULTING AGREEMENT (this “Agreement”) is entered into by and between Daniel J. Schrider (the “Consultant”) and Atlantic Union Bank (the “Company”), to be effective immediately following the Effective Time (as defined in the Agreement and Plan of Merger, dated October 21, 2024 (the “Merger Agreement”), by and between Atlantic Union Bankshares Corporation (th

April 1, 2025 EX-99.2

Sandy Spring Bancorp, Inc. 2015 Omnibus Incentive Plan (filed herewith)

Exhibit 99.2 SANDY SPRING BANCORP, INC. 2015 OMNIBUS INCENTIVE PLAN Section 1. Purpose. The purpose of the Sandy Spring Bancorp, Inc. 2015 Omnibus Incentive Plan (the “Plan”) is to motivate and reward employees and other individuals to perform at the highest level and contribute significantly to the success of Sandy Spring Bancorp, Inc. (together with its subsidiaries and any and all successor ent

April 1, 2025 EX-99.1

Atlantic Union Bankshares Corporation Completes Acquisition of Sandy Spring Bancorp, Inc.

Exhibit 99.1 Atlantic Union Bankshares Corporation Completes Acquisition of Sandy Spring Bancorp, Inc. Richmond, Va., April 1, 2025 – Atlantic Union Bankshares Corporation (“Atlantic Union”) announced that it has completed its previously announced merger with Sandy Spring Bancorp, Inc. (“Sandy Spring”) today. This transaction strengthens Atlantic Union’s presence in Virginia and Maryland and creat

April 1, 2025 EX-99.1

Sandy Spring Bancorp, Inc. 2024 Equity Plan (filed herewith)

Exhibit 99.1 SANDY SPRING BANCORP, INC. 2024 EQUITY PLAN 1. ESTABLISHMENT, DURATION AND PURPOSE 1.1. Establishment and Duration of the Plan. This Plan shall be submitted to the shareholders of the Company for approval and, if approved, shall become effective as of the date of such shareholder approval (the “Effective Date”). The Plan shall remain in effect until the earliest of (i) the date that n

March 27, 2025 EX-99.1

Atlantic Union Bankshares Corporation To Release First Quarter 2025 Financial Results

Exhibit 99.1 Atlantic Union Bankshares Corporation To Release First Quarter 2025 Financial Results Richmond, Va., March 27, 2025 – Atlantic Union Bankshares Corporation (the “Company”) today announced that it will release first quarter 2025 financial results before the market opens on Thursday, April 24, 2025. Following the release, the Company will host a conference call and webcast for investors

March 27, 2025 8-K

Financial Statements and Exhibits, Other Events

United States SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 27, 2025 ATLANTIC UNION BANKSHARES CORPORATION (Exact name of registrant as specified in its charter) Virginia 001-39325 54-1598552 (State or other jurisdiction (Commission (I.R

March 26, 2025 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.   )

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.   ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permit

March 26, 2025 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.   )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.   ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(

February 27, 2025 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K

Table of Contents fv UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

February 27, 2025 EX-10.7

Atlantic Union Bankshares Corporation Executive Severance Plan (as amended and restated effective November 18, 2021) (re-filed to update Schedule A thereto)

Exhibit 10.7 ATLANTIC UNION BANKSHARES CORPORATION EXECUTIVE SEVERANCE PLAN SUMMARY PLAN DESCRIPTION AND PLAN DOCUMENT This Summary Plan Description sets forth and describes the benefits under the Atlantic Union Bankshares Corporation Executive Severance Plan (the “Plan”). The terms of the Plan and the Summary Plan Description of the Plan are combined in this single document. Atlantic Union Banksh

February 27, 2025 EX-4.6

Description of the Company’s Capital Stock

Exhibit 4.6 DESCRIPTION OF THE REGISTRANT’S SECURITIES REGISTERED PURSUANT TO SECTION 12 OF THE SECURITIES EXCHANGE ACT OF 1934, AS AMENDED As of the filing date of the Annual Report on Form 10-K (the “Form 10-K”) of which this exhibit (this “Exhibit”) is a part, Atlantic Union Bankshares Corporation (the “Company”) had the following outstanding securities registered pursuant to Section 12 of the

February 27, 2025 EX-10.10

Schedule of Atlantic Union Bankshares Corporation Non-Employee Director Compensation

Exhibit 10.10 SCHEDULE OF NON-EMPLOYEE DIRECTOR COMPENSATION OF ATLANTIC UNION BANKSHARES CORPORATION Effective January 1, 2025 Annual Cash Retainer and Fees by Position (1) Amount Non-Employee Directors (2) $60,000 Additional Fee to Chairperson of the Board $80,000 Additional Fee to Vice Chairperson of the Board $20,000 Additional Fee to Audit Committee Chair $22,500 Additional Fee to Compensatio

February 27, 2025 EX-19

Atlantic Union Bankshares Corporation Policy Statement on Insider Trading

Exhibit 19 Policy Statement on Insider Trading Purpose Atlantic Union Bankshares Corporation (the “Company”) is a public company, the common stock of which is traded on the New York Stock Exchange and registered under the Securities Exchange Act of 1934, as amended (the “Exchange Act”).

February 27, 2025 EX-21.1

Subsidiaries of Atlantic Union Bankshares Corporation

Exhibit 21.1 Subsidiaries of Atlantic Union Bankshares Corporation Subsidiary State of Incorporation or Organization Atlantic Union Bank Virginia Atlantic Union Equipment Finance, Inc. Virginia AUB Investments, Inc. Delaware Atlantic Union Financial Consultants, LLC Virginia Union Insurance Group, LLC Virginia

February 5, 2025 8-K

Financial Statements and Exhibits, Other Events, Submission of Matters to a Vote of Security Holders

United States SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 5, 2025 ATLANTIC UNION BANKSHARES CORPORATION (Exact name of registrant as specified in its charter) Virginia 001-39325 54-1598552 (State or other jurisdiction (Commission (I

February 5, 2025 EX-99.1

Atlantic Union Bankshares Corporation and Sandy Spring Bancorp, Inc. Announce Receipt of All Shareholder and Bank Regulatory Approvals to Complete Merger

Exhibit 99.1 Atlantic Union Bankshares Corporation and Sandy Spring Bancorp, Inc. Announce Receipt of All Shareholder and Bank Regulatory Approvals to Complete Merger Richmond, Va. and Olney, Md., February 5, 2025 – Atlantic Union Bankshares Corporation (“Atlantic Union”) (NYSE: AUB) and Sandy Spring Bancorp, Inc. (“Sandy Spring”) (NASDAQ: SASR) today jointly announced that Atlantic Union’s shareh

January 31, 2025 EX-99.1

Atlantic Union Bankshares Corporation Declares Quarterly Common Stock Dividend and Preferred Stock Dividend

‌ Exhibit 99.1 Atlantic Union Bankshares Corporation Declares Quarterly Common Stock Dividend and Preferred Stock Dividend Richmond, Va., January 31, 2025 – The Board of Directors (the “Board”) of Atlantic Union Bankshares Corporation (the “Company”) has declared a quarterly dividend of $0.34 per share of common stock, which is the same as the fourth quarter of 2024 and a $0.02, or an approximatel

January 31, 2025 8-K

Regulation FD Disclosure, Financial Statements and Exhibits

United States SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 31, 2025 ATLANTIC UNION BANKSHARES CORPORATION (Exact name of registrant as specified in its charter) Virginia 001-39325 54-1598552 (State or other jurisdiction (Commission (I

January 31, 2025 EX-99.1

2 Forward Looking Statements This presentation and statements by our management may constitute “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. Forward-looking statements are statements that inc

Exhibit 99.1 Investor Presentation NYSE: AUB February – March 2025 2 Forward Looking Statements This presentation and statements by our management may constitute “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. Forward-looking statements are statements that include, without limitation, statements on the slides entitled “Virginia’s Bank and Si

January 31, 2025 8-K

Financial Statements and Exhibits, Other Events

United States SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 31, 2025 ATLANTIC UNION BANKSHARES CORPORATION (Exact name of registrant as specified in its charter) Virginia 001-39325 54-1598552 (State or other jurisdiction (Commission (I

January 27, 2025 425

* * *

Filed by Atlantic Union Bankshares Corporation (Commission File No.: 001-39325) Pursuant to Rule 425 of the Securities Act of 1933 and deemed filed pursuant to Rule 14a-6 of the Securities Exchange Act of 1934 Subject Company: Sandy Spring Bancorp, Inc. (Commission File No.: 000-19065) This filing relates to the proposed merger of Sandy Spring Bancorp, Inc. (“Sandy Spring”) with and into Atlantic

January 24, 2025 425

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 24, 2025 ATLANTIC UNION B

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 24, 2025 ATLANTIC UNION BANKSHARES CORPORATION (Exact name of registrant as specified in its charter) Virginia 001-39325 54-1598552 (State or other jurisdiction (Commission Fi

January 24, 2025 8-K

Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 24, 2025 ATLANTIC UNION BANKSHARES CORPORATION (Exact name of registrant as specified in its charter) Virginia 001-39325 54-1598552 (State or other jurisdiction (Commission Fi

January 23, 2025 425

Filed by Atlantic Union Bankshares Corporation

Filed by Atlantic Union Bankshares Corporation (Commission File No.: 001-39325) Pursuant to Rule 425 of the Securities Act of 1933 and deemed filed pursuant to Rule 14a-6 of the Securities Exchange Act of 1934 Subject Company: Sandy Spring Bancorp, Inc. (Commission File No.: 000-19065) The following email was sent to employees of Atlantic Union Bankshares Corporation on January 23, 2025. Heading:

January 23, 2025 EX-99.2

2 Forward Looking Statements This presentation and statements by our management may constitute “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. Forward-looking statements are statements that inc

Exhibit 99.2 4th Quarter and Full Year 2024 Earnings Presentation NYSE: AUB January 23, 2025 2 Forward Looking Statements This presentation and statements by our management may constitute “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. Forward-looking statements are statements that include, without limitation, statements on the slides entitl

January 23, 2025 8-K

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

United States SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 23, 2025 ATLANTIC UNION BANKSHARES CORPORATION (Exact name of registrant as specified in its charter) Virginia 001-39325 54-1598552 (State or other jurisdiction (Commission (I

January 23, 2025 EX-99.1

ATLANTIC UNION BANKSHARES REPORTS FOURTH QUARTER AND FULL YEAR FINANCIAL RESULTS

Exhibit 99.1 Contact: Robert M. Gorman - (804) 523-7828 Executive Vice President / Chief Financial Officer ATLANTIC UNION BANKSHARES REPORTS FOURTH QUARTER AND FULL YEAR FINANCIAL RESULTS Richmond, Va., January 23, 2025 – Atlantic Union Bankshares Corporation (the “Company” or “Atlantic Union”) (NYSE: AUB) reported net income available to common shareholders of $54.8 million and basic and diluted

January 14, 2025 8-K

Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 13, 2025 ATLANTIC UNION BANKSHARES CORPORATION (Exact name of registrant as specified in its charter) Virginia 001-39325 54-1598552 (State or other jurisdiction (Commission Fi

January 14, 2025 425

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 13, 2025 ATLANTIC UNION B

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 13, 2025 ATLANTIC UNION BANKSHARES CORPORATION (Exact name of registrant as specified in its charter) Virginia 001-39325 54-1598552 (State or other jurisdiction (Commission Fi

January 14, 2025 EX-99.1

Atlantic Union Bankshares Corporation and Sandy Spring Bancorp, Inc. Announce Receipt of Federal Reserve Approvals to Complete Mergers

Exhibit 99.1 Atlantic Union Bankshares Corporation and Sandy Spring Bancorp, Inc. Announce Receipt of Federal Reserve Approvals to Complete Mergers Richmond, VA. and Olney, MD, January 13, 2025 – Atlantic Union Bankshares Corporation (“Atlantic Union”) (NYSE: AUB) and Sandy Spring Bancorp, Inc. (“Sandy Spring”) (NASDAQ: SASR) jointly announced today the receipt of regulatory approvals from the Fed

January 14, 2025 EX-99.1

Atlantic Union Bankshares Corporation and Sandy Spring Bancorp, Inc. Announce Receipt of Federal Reserve Approvals to Complete Mergers

Exhibit 99.1 Atlantic Union Bankshares Corporation and Sandy Spring Bancorp, Inc. Announce Receipt of Federal Reserve Approvals to Complete Mergers Richmond, VA. and Olney, MD, January 13, 2025 – Atlantic Union Bankshares Corporation (“Atlantic Union”) (NYSE: AUB) and Sandy Spring Bancorp, Inc. (“Sandy Spring”) (NASDAQ: SASR) jointly announced today the receipt of regulatory approvals from the Fed

January 2, 2025 EX-99.1

Form of Acceleration and Clawback Agreement

Exhibit 99.1 Form of Acceleration and Clawback Agreement As you are aware, on October 21, 2024, Sandy Spring Bancorp, Inc., a Maryland corporation (the “Company”) entered into an Agreement and Plan of Merger (“Merger Agreement”) with Atlantic Union Bankshares Corporation, a Virginia corporation (“AUB”) providing for the merger of the Company with and into AUB (the “Merger”), whereupon the separate

January 2, 2025 EX-99.1

Form of Acceleration and Clawback Agreement

Exhibit 99.1 Form of Acceleration and Clawback Agreement As you are aware, on October 21, 2024, Sandy Spring Bancorp, Inc., a Maryland corporation (the “Company”) entered into an Agreement and Plan of Merger (“Merger Agreement”) with Atlantic Union Bankshares Corporation, a Virginia corporation (“AUB”) providing for the merger of the Company with and into AUB (the “Merger”), whereupon the separate

January 2, 2025 8-K

Financial Statements and Exhibits, Other Events

United States SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 2, 2025 ATLANTIC UNION BANKSHARES CORPORATION (Exact name of registrant as specified in its charter) Virginia 001-39325 54-1598552 (State or other jurisdiction (Commission (I.

January 2, 2025 425

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): December 26, 2024 ATLANTIC UNION

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): December 26, 2024 ATLANTIC UNION BANKSHARES CORPORATION (Exact name of registrant as specified in its charter) Virginia 001-39325 54-1598552 (State or other jurisdiction (Commission F

January 2, 2025 EX-99.1

Atlantic Union Bankshares Corporation To Release Fourth Quarter and Full Year 2024 Financial Results

Exhibit 99.1 Atlantic Union Bankshares Corporation To Release Fourth Quarter and Full Year 2024 Financial Results Richmond, Va., January 2, 2025 – Atlantic Union Bankshares Corporation (the “Company”) today announced that it will release fourth quarter and full year 2024 financial results before the market opens on Thursday, January 23, 2025. Following the release, the Company will host a conferen

January 2, 2025 8-K

Regulation FD Disclosure, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): December 26, 2024 ATLANTIC UNION BANKSHARES CORPORATION (Exact name of registrant as specified in its charter) Virginia 001-39325 54-1598552 (State or other jurisdiction (Commission F

December 17, 2024 424B3

To the Shareholders of Atlantic Union Bankshares Corporation and the Stockholders of Sandy Spring Bancorp, Inc. MERGER PROPOSED — YOUR VOTE IS VERY IMPORTANT

TABLE OF CONTENTS  Filed Persuant to Rule 424(b)(3)  Registration No. 333-283382 To the Shareholders of Atlantic Union Bankshares Corporation and the Stockholders of Sandy Spring Bancorp, Inc. MERGER PROPOSED — YOUR VOTE IS VERY IMPORTANT On behalf of the boards of directors of Atlantic Union Bankshares Corporation (“Atlantic Union”) and Sandy Spring Bancorp, Inc. (“Sandy Spring”), we are pleased

December 13, 2024 CORRESP

ATLANTIC UNION BANKSHARES CORPORATION December 13, 2024

ATLANTIC UNION BANKSHARES CORPORATION December 13, 2024 VIA EDGAR Securities and Exchange Commission Division of Corporate Finance Office of Finance 100 F.

December 13, 2024 EX-99.1

Form of Proxy Card of Atlantic Union Bankshares Corporation

Exhibit 99.1 A Proposals — The Board of Directors recommends a vote FOR Proposal 1 and FOR Proposal 2. 042PVD 1. Proposal to approve the Agreement and Plan of Merger, dated as of October 21, 2024, by and between Atlantic Union Bankshares Corporation (“Atlantic Union”) and Sandy Spring Bancorp, Inc. (“Sandy Spring”) (as it may be amended from time to time, the “merger agreement”) and the transactio

December 13, 2024 S-4/A

As filed with the Securities and Exchange Commission on December 13, 2024

TABLE OF CONTENTS As filed with the Securities and Exchange Commission on December 13, 2024 Registration No.

December 13, 2024 EX-99.2

Form of Proxy Card of Sandy Spring Bancorp, Inc.

Exhibit 99.2 1UPX The Sample Company A Proposals — The Board of Directors recommends a vote FOR all proposals. 042P1C 1. Sandy Spring merger proposal: Proposal to approve and adopt the Agreement and Plan of Merger, dated as of October 21, 2024 by and between Sandy Spring Bancorp, Inc. and Atlantic Union Bankshares Corporation and the transactions contemplated thereby; 2. Sandy Spring compensation

December 13, 2024 EX-99.5

Consent of Daniel J. Schrider

Exhibit 99.5 CONSENT OF PERSON DESIGNATED TO SERVE ON THE BOARD OF DIRECTORS OF Atlantic Union Bankshares Corporation The undersigned hereby consents, pursuant to Rule 438 under the Securities Act of 1933, as amended, to being named in the joint proxy statement/prospectus of Atlantic Union Bankshares Corporation and Sandy Spring Bancorp, Inc., which constitutes part of Atlantic Union Bankshares Co

November 21, 2024 EX-99.3

Consent of Keefe, Bruyette & Woods, Inc.

Exhibit 99.3 CONSENT OF KEEFE, BRUYETTE & WOODS, INC. We hereby consent to the inclusion of our opinion letter to the Board of Directors of Sandy Spring Bancorp, Inc. (“Sandy Spring”), as Annex E to the joint proxy statement/prospectus which forms a part of the Registration Statement on Form S-4 filed on the date hereof (the “Registration Statement”) relating to the proposed merger of Sandy Spring

November 21, 2024 EX-99.5

Consent of Daniel J. Schrider

Exhibit 99.5 CONSENT OF PERSON DESIGNATED TO SERVE ON THE BOARD OF DIRECTORS OF Atlantic Union Bankshares Corporation The undersigned hereby consents, pursuant to Rule 438 under the Securities Act of 1933, as amended, to being named in the joint proxy statement/prospectus of Atlantic Union Bankshares Corporation and Sandy Spring Bancorp, Inc., which constitutes part of Atlantic Union Bankshares Co

November 21, 2024 S-4

As filed with the Securities and Exchange Commission on November 21, 2024

TABLE OF CONTENTS As filed with the Securities and Exchange Commission on November 21, 2024 Registration No.

November 21, 2024 EX-99.4

Consent of Morgan Stanley & Co. LLC

Exhibit 99.4 Consent of Morgan Stanley & Co. LLC We hereby consent to the use in the Registration Statement of Atlantic Union Bankshares Corporation (“Atlantic Union”) on Form S-4 (the “Registration Statement”) and in the Proxy Statement of Sandy Spring Bancorp, Inc. (“Sandy Spring”) and Prospectus of Atlantic Union, which are part of the Registration Statement, of our written opinion, dated Octob

November 21, 2024 EX-FILING FEES

Filing Fee Table

Calculation of Filing Fee Tables S-4 Atlantic Union Bankshares Corp Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial Effective Date Filing Fee Previously Paid in Connection with Unsold Securities to be Carried Forward Newly Registered Securities Fees to be Paid 1 Equity Common Stock, par value $1.

November 5, 2024 EX-31.01

Certification of Principal Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

Exhibit 31.1 CERTIFICATIONS I, John C. Asbury, certify that: 1. I have reviewed this quarterly report on Form 10-Q of Atlantic Union Bankshares Corporation; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not mis

November 5, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended September 30, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File Number: 001-39325 ATLANTIC UNION BANKSHARES CORPOR

November 5, 2024 EX-32.01

Certification of Principal Executive Officer and Principal Financial and Accounting Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

Exhibit 32.1 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350 AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Quarterly Report of Atlantic Union Bankshares Corporation (the “Company”) on Form 10-Q for the quarter ended September 30, 2024 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), the undersigned Chief Executiv

November 5, 2024 EX-31.02

Certification of Principal Financial and Accounting Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

Exhibit 31.2 CERTIFICATIONS I, Robert M. Gorman, certify that: 1. I have reviewed this quarterly report on Form 10-Q of Atlantic Union Bankshares Corporation; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not m

November 5, 2024 EX-15.01

Letter regarding unaudited interim financial information.

Exhibit 15.1 The Shareholders and Board of Directors of Atlantic Union Bankshares Corporation: We are aware of the incorporation by reference in the Registration Statements (Form S-3 No. 333-248544, Form S-3 No. 333-102012, Form S-3 No. 333-81199, Form S-8 No. 333-255994, Form S-8 No. 333-203580, Form S-8 No. 333-193364, Form S-8 No. 333-175808, Form S-8 No. 333-113842, Form S-8 No. 333-113839 and

October 28, 2024 425

Click here to view disclosures.

Filed by Atlantic Union Bankshares Corporation (Commission File No.: 001-39325) Pursuant to Rule 425 of the Securities Act of 1933 and deemed filed pursuant to Rule 14a-12 of the Securities Exchange Act of 1934 Subject Company: Sandy Spring Bancorp, Inc. (Commission File No.: 000-19065) The following materials were shared by Atlantic Union Bankshares Corporation (the “Company”) on October 25, 2024

October 25, 2024 8-K

Regulation FD Disclosure, Financial Statements and Exhibits

United States SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 25, 2024 ATLANTIC UNION BANKSHARES CORPORATION (Exact name of registrant as specified in its charter) Virginia 001-39325 54-1598552 (State or other jurisdiction (Commission (I

October 25, 2024 EX-99.1

2 Forward Looking Statements This presentation and statements by our management may constitute “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. Forward-looking statements are statements that inc

Exhibit 99.1 Investor Presentation NYSE: AUB November – December 2024 2 Forward Looking Statements This presentation and statements by our management may constitute “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. Forward-looking statements are statements that include, without limitation, statements on slides entitled “Virginia’s Bank and Siz

October 24, 2024 EX-99.1

Atlantic Union Bankshares Corporation Declares Quarterly Common Stock Dividend and Preferred Stock Dividend

‌ Exhibit 99.1 Atlantic Union Bankshares Corporation Declares Quarterly Common Stock Dividend and Preferred Stock Dividend Richmond, Va., October 24, 2024 – The Board of Directors (the “Board”) of Atlantic Union Bankshares Corporation (the “Company”) has declared a quarterly dividend of $0.34 per share of common stock, which is a $0.02 or approximately 6%, increase from the third quarter of 2024 a

October 24, 2024 8-K

Financial Statements and Exhibits, Other Events

United States SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 24, 2024 ATLANTIC UNION BANKSHARES CORPORATION (Exact name of registrant as specified in its charter) Virginia 001-39325 54-1598552 (State or other jurisdiction (Commission (I

October 22, 2024 424B4

9,859,155 Shares Atlantic Union Bankshares Corporation Common Stock

TABLE OF CONTENTS  Filed Pursuant to Rule 424(b)(4)  Registration No. 333-281290 PROSPECTUS SUPPLEMENT (To Prospectus dated August 6, 2024) 9,859,155 Shares Atlantic Union Bankshares Corporation Common Stock Atlantic Union Bankshares Corporation has entered into a forward sale agreement with Morgan Stanley & Co. LLC or its affiliate (the “forward purchaser”), in respect of an aggregate of 9,859,15

October 22, 2024 EX-FILING FEES

Table 1: Newly Registered and Carry Forward Securities

Calculation of Filing Fee Tables S-3 Atlantic Union Bankshares Corp Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial Effective Date Filing Fee Previously Paid in Connection with Unsold Securities to be Carried Forward Newly Registered Securities Fees to be Paid 1 Equity Common Stock, par value $1.

October 22, 2024 8-K

Entry into a Material Definitive Agreement, Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 21, 2024 ATLANTIC UNION BANKSHARES CORPORATION (Exact name of registrant as specified in its charter) Virginia 001-39325 54-1598552 (State or other jurisdiction (Commission (I

October 22, 2024 EX-10.1

Additional Forward Sale Agreement, dated as of October 21, 2024, between Atlantic Union Bankshares Corporation and Morgan Stanley & Co. LLC

Exhibit 10.1 Execution Version Forward Confirmation Date: October 21, 2024 To: Atlantic Union Bankshares Corporation From: Morgan Stanley & Co. LLC Ladies and Gentlemen: The purpose of this letter agreement is to confirm the terms and conditions of the Transaction entered into between Morgan Stanley & Co. LLC (“Dealer”) and Atlantic Union Bankshares Corporation (the “Counterparty”) on the Trade Da

October 21, 2024 EX-10.1

Support Agreement, dated as of October 21, 2024, by and between Atlantic Union Bankshares Corporation and each of the stockholders of Sandy Spring Bancorp, Inc. listed on the signature pages therein.

Exhibit 10.1 EXECUTION VERSION SASR SUPPORT AGREEMENT This Support Agreement (this “Agreement”), dated as of October 21, 2024, is entered into by and among Atlantic Union Bankshares Corporation, a Virginia corporation (“AUB”), and each of the undersigned stockholders (each, a “Stockholder”, and collectively, the “Stockholders”) of Sandy Spring Bancorp, Inc., a Maryland corporation (“SASR”). The ob

October 21, 2024 EX-99.3

Atlantic Union Bankshares Corporation Announces Pricing of an Underwritten Offering of 9,859,155 Shares of Common Stock

Exhibit 99.3 Atlantic Union Bankshares Corporation Announces Pricing of an Underwritten Offering of 9,859,155 Shares of Common Stock Richmond, Va., October 21, 2024 – Atlantic Union Bankshares Corporation (NYSE: AUB) (“Atlantic Union”) announced today that it priced an underwritten public offering of 9,859,155 shares of its common stock at a price of $35.50 per share (before underwriting discounts

October 21, 2024 EX-99.5

Unaudited Consolidated Financial Statements of American National as of and for the three months ended March 31, 2024

Exhibit 99.5 Unaudited Consolidated Financial Statements of American National as of and for the three months ended March 31, 2024 1 Consolidated Balance Sheet (Dollars in thousands, except share and per share data) March 31, 2024 Assets Cash and due from banks $ 26,565 Interest-bearing deposits in other banks 28,495 Securities available for sale, at fair value 498,545 Restricted stock, at cost 10,

October 21, 2024 EX-99.2

Completing the “Golden Crescent” NYSE: AUB October 21, 2024 Merger Investor Presentation

Exhibit 99.2 Completing the “Golden Crescent” NYSE: AUB October 21, 2024 Merger Investor Presentation Disclaimer and Caution About Forward - Looking Statements THE INFORMATION CONTAINED IN THIS PRESENTATION IS CONFIDENTIAL INFORMATION. ACCORDINGLY, THE INFORMATION INCLUDED HEREIN MAY NOT BE REFERRED TO, QUOTED OR OTHERWISE DISCLOSED BY YOU. IN REVIEWING THIS INFORMATION, YOU ARE ACKNOWLEDGING THE

October 21, 2024 424B5

SUBJECT TO COMPLETION, DATED OCTOBER 20, 2024

TABLE OF CONTENTS The information in this preliminary prospectus supplement is not complete and may be changed.

October 21, 2024 EX-1.1

Underwriting Agreement, dated as of October 21, 2024, among Atlantic Union Bankshares Corporation, Morgan Stanley & Co. LLC, as representative of the underwriters named therein, Morgan Stanley & Co. LLC, as forward purchaser and Morgan Stanley & Co. LLC, as forward seller

  Exhibit 1.1   ATLANTIC UNION BANKSHARES CORPORATION   (a Virginia corporation)   9,859,155 shares of Common Stock   UNDERWRITING AGREEMENT   Dated: October 21, 2024         Atlantic Union Bankshares Corporation   (a Virginia corporation)   9,859,155 shares of Common Stock   UNDERWRITING AGREEMENT   October 21, 2024   Morgan Stanley & Co. LLC as Representative of the several Underwriters   Morgan

October 21, 2024 425

Atlantic Union Bankshares Corporation’s Proposed Acquisition of Sandy Spring Bancorp, Inc. Frequently Asked Questions October 21, 2024

Filed by Atlantic Union Bankshares Corporation (Commission File No.: 001-39325) Pursuant to Rule 425 of the Securities Act of 1933 and deemed filed pursuant to Rule 14a-12 of the Securities Exchange Act of 1934 Subject Company: Sandy Spring Bancorp, Inc. (Commission File No.: 000-19065) The following materials were shared with certain employees of Atlantic Union Bankshares Corporation on October 2

October 21, 2024 8-K

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 21, 2024 ATLANTIC UNION BANKSHARES CORPORATION (Exact name of registrant as specified in its charter) Virginia 001-39325 54-1598552 (State or other jurisdiction (Commission (I

October 21, 2024 EX-10.1

Support Agreement, dated as of October 21, 2024, by and between Atlantic Union Bankshares Corporation and each of the stockholders of Sandy Spring Bancorp, Inc. listed on the signature pages therein.

Exhibit 10.1 EXECUTION VERSION SASR SUPPORT AGREEMENT This Support Agreement (this “Agreement”), dated as of October 21, 2024, is entered into by and among Atlantic Union Bankshares Corporation, a Virginia corporation (“AUB”), and each of the undersigned stockholders (each, a “Stockholder”, and collectively, the “Stockholders”) of Sandy Spring Bancorp, Inc., a Maryland corporation (“SASR”). The ob

October 21, 2024 EX-2.1

Agreement and Plan of Merger, dated as of October 21, 2024, between Atlantic Union Bankshares Corporation and Sandy Spring Bancorp, Inc.*

Exhibit 2.1 Execution Version AGREEMENT AND PLAN OF MERGER by and between SANDY SPRING BANCORP, INC. and ATLANTIC UNION BANKSHARES CORPORATION Dated as of October 21, 2024 TABLE OF CONTENTS Article I THE MERGER 2 1.1 The Merger 2 1.2 Closing 2 1.3 Effective Time 3 1.4 Effects of the Merger. 3 1.5 Conversion of SASR Common Stock. 3 1.6 AUB Stock 4 1.7 Treatment of SASR Equity Awards 4 1.8 SASR ESPP

October 21, 2024 EX-99.1

Atlantic Union Bankshares Corporation Announces Agreement to Acquire Sandy Spring Bancorp

Exhibit 99.1 Atlantic Union Bankshares Corporation Announces Agreement to Acquire Sandy Spring Bancorp Richmond, Va. and Olney, Md., October 21, 2024 – Atlantic Union Bankshares Corporation (“Atlantic Union”) (NYSE: AUB) and Sandy Spring Bancorp (“Sandy Spring”) (Nasdaq: SASR) jointly announced today that they have entered into a definitive merger agreement for Atlantic Union to acquire Sandy Spri

October 21, 2024 EX-2.1

Agreement and Plan of Merger, dated as of October 21, 2024, between Atlantic Union Bankshares Corporation and Sandy Spring Bancorp, Inc. (incorporated by reference to Exhibit 2.1 to Current Report on Form 8-K filed on October 21, 2024).*

Exhibit 2.1 Execution Version AGREEMENT AND PLAN OF MERGER by and between SANDY SPRING BANCORP, INC. and ATLANTIC UNION BANKSHARES CORPORATION Dated as of October 21, 2024 TABLE OF CONTENTS Article I THE MERGER 2 1.1 The Merger 2 1.2 Closing 2 1.3 Effective Time 3 1.4 Effects of the Merger. 3 1.5 Conversion of SASR Common Stock. 3 1.6 AUB Stock 4 1.7 Treatment of SASR Equity Awards 4 1.8 SASR ESPP

October 21, 2024 EX-10.2

Forward Sale Agreement, dated as of October 21, 2024, between Atlantic Union Bankshares Corporation and Morgan Stanley & Co. LLC (incorporated by reference to Exhibit 10.2 to Current Report on Form 8-K filed on October 21, 2024).

Exhibit 10.2 Execution Version Forward Confirmation Date: October 21, 2024 To: Atlantic Union Bankshares Corporation From: Morgan Stanley & Co. LLC Ladies and Gentlemen: The purpose of this letter agreement is to confirm the terms and conditions of the Transaction entered into between Morgan Stanley & Co. LLC (“Dealer”) and Atlantic Union Bankshares Corporation (the “Counterparty”) on the Trade Da

October 21, 2024 EX-99.2

3rd Quarter 2024 Earnings Presentation NYSE: AUB October 21, 2024

Exhibit 99.2 3rd Quarter 2024 Earnings Presentation NYSE: AUB October 21, 2024 2 Forward Looking Statements This presentation and statements by our management may constitute “forward - looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. Forward - looking statements are statements that include, without limitation, statement s on slides entitled “Q3 2024 H

October 21, 2024 425

Filed by Atlantic Union Bankshares Corporation

Filed by Atlantic Union Bankshares Corporation (Commission File No.: 001-39325) Pursuant to Rule 425 of the Securities Act of 1933 and deemed filed pursuant to Rule 14a-12 of the Securities Exchange Act of 1934 Subject Company: Sandy Spring Bancorp, Inc. (Commission File No.: 000-19065) The following is a transcript of a video broadcast by Atlantic Union Bankshares Corporation on October 21, 2024.

October 21, 2024 EX-99.2

Completing the “Golden Crescent” NYSE: AUB October 21, 2024 Merger Investor Presentation

Exhibit 99.2 Completing the “Golden Crescent” NYSE: AUB October 21, 2024 Merger Investor Presentation Disclaimer and Caution About Forward - Looking Statements THE INFORMATION CONTAINED IN THIS PRESENTATION IS CONFIDENTIAL INFORMATION. ACCORDINGLY, THE INFORMATION INCLUDED HEREIN MAY NOT BE REFERRED TO, QUOTED OR OTHERWISE DISCLOSED BY YOU. IN REVIEWING THIS INFORMATION, YOU ARE ACKNOWLEDGING THE

October 21, 2024 EX-10.2

Forward Sale Agreement, dated as of October 21, 2024, between Atlantic Union Bankshares Corporation and Morgan Stanley & Co. LLC

Exhibit 10.2 Execution Version Forward Confirmation Date: October 21, 2024 To: Atlantic Union Bankshares Corporation From: Morgan Stanley & Co. LLC Ladies and Gentlemen: The purpose of this letter agreement is to confirm the terms and conditions of the Transaction entered into between Morgan Stanley & Co. LLC (“Dealer”) and Atlantic Union Bankshares Corporation (the “Counterparty”) on the Trade Da

October 21, 2024 EX-99.1

Atlantic Union Bankshares Corporation Announces Agreement to Acquire Sandy Spring Bancorp

Exhibit 99.1 Atlantic Union Bankshares Corporation Announces Agreement to Acquire Sandy Spring Bancorp Richmond, Va. and Olney, Md., October 21, 2024 – Atlantic Union Bankshares Corporation (“Atlantic Union”) (NYSE: AUB) and Sandy Spring Bancorp (“Sandy Spring”) (Nasdaq: SASR) jointly announced today that they have entered into a definitive merger agreement for Atlantic Union to acquire Sandy Spri

October 21, 2024 EX-99.5

Unaudited Consolidated Financial Statements of American National as of and for the three months ended March 31, 2024

Exhibit 99.5 Unaudited Consolidated Financial Statements of American National as of and for the three months ended March 31, 2024 1 Consolidated Balance Sheet (Dollars in thousands, except share and per share data) March 31, 2024 Assets Cash and due from banks $ 26,565 Interest-bearing deposits in other banks 28,495 Securities available for sale, at fair value 498,545 Restricted stock, at cost 10,

October 21, 2024 8-K

Regulation FD Disclosure, Entry into a Material Definitive Agreement, Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 21, 2024 ATLANTIC UNION BANKSHARES CORPORATION (Exact name of registrant as specified in its charter) Virginia 001-39325 54-1598552 (State or other jurisdiction (Commission (I

October 21, 2024 425

Filed by Atlantic Union Bankshares Corporation

Filed by Atlantic Union Bankshares Corporation (Commission File No.: 001-39325) Pursuant to Rule 425 of the Securities Act of 1933 and deemed filed pursuant to Rule 14a-12 of the Securities Exchange Act of 1934 Subject Company: Sandy Spring Bancorp, Inc. (Commission File No.: 000-19065) The following is a transcript of the Atlantic Union Bankshares Corporation Third Quarter 2024 Earnings Conferenc

October 21, 2024 EX-99.4

Unaudited Pro Forma Condensed Combined Financial Data

Exhibit 99.4 Unaudited Pro Forma Condensed Combined Financial Data Defined terms included below have the same meaning as terms defined and included elsewhere in the preliminary prospectus supplement dated October 20, 2024 (the “Preliminary Prospectus Supplement”), except that, unless the context requires otherwise, the term “forward sale agreement” as used herein does not include any additional fo

October 21, 2024 425

Filed by Atlantic Union Bankshares Corporation

Filed by Atlantic Union Bankshares Corporation (Commission File No.: 001-39325) Pursuant to Rule 425 of the Securities Act of 1933 and deemed filed pursuant to Rule 14a-12 of the Securities Exchange Act of 1934 Subject Company: Sandy Spring Bancorp, Inc. (Commission File No.: 000-19065) The following LinkedIn post was issued by Atlantic Union Bankshares Corporation on October 21, 2024. Cautionary

October 21, 2024 EX-1.1

Underwriting Agreement, dated as of October 21, 2024, among Atlantic Union Bankshares Corporation, Morgan Stanley & Co. LLC, as representative of the underwriters named therein, Morgan Stanley & Co. LLC, as forward purchaser and Morgan Stanley & Co. LLC, as forward seller

  Exhibit 1.1   ATLANTIC UNION BANKSHARES CORPORATION   (a Virginia corporation)   9,859,155 shares of Common Stock   UNDERWRITING AGREEMENT   Dated: October 21, 2024         Atlantic Union Bankshares Corporation   (a Virginia corporation)   9,859,155 shares of Common Stock   UNDERWRITING AGREEMENT   October 21, 2024   Morgan Stanley & Co. LLC as Representative of the several Underwriters   Morgan

October 21, 2024 EX-99.1

ATLANTIC UNION BANKSHARES REPORTS THIRD QUARTER FINANCIAL RESULTS Atlantic Union Bankshares investor call today, Monday, October 21, 2024 at 9:00 a.m. (EDT)

Exhibit 99.1 Contact: Robert M. Gorman - (804) 523-7828 Executive Vice President / Chief Financial Officer ATLANTIC UNION BANKSHARES REPORTS THIRD QUARTER FINANCIAL RESULTS Atlantic Union Bankshares investor call today, Monday, October 21, 2024 at 9:00 a.m. (EDT) Richmond, Va., October 21, 2024 – Atlantic Union Bankshares Corporation (the “Company” or “Atlantic Union”) (NYSE: AUB) reported net inc

October 21, 2024 425

Filed by Atlantic Union Bankshares Corporation

Filed by Atlantic Union Bankshares Corporation (Commission File No.: 001-39325) Pursuant to Rule 425 of the Securities Act of 1933 and deemed filed pursuant to Rule 14a-12 of the Securities Exchange Act of 1934 Subject Company: Sandy Spring Bancorp, Inc. (Commission File No.: 000-19065) The following Facebook post was issued by Atlantic Union Bankshares Corporation on October 21, 2024. Cautionary

October 21, 2024 EX-99.4

Unaudited Pro Forma Condensed Combined Financial Data

Exhibit 99.4 Unaudited Pro Forma Condensed Combined Financial Data Defined terms included below have the same meaning as terms defined and included elsewhere in the preliminary prospectus supplement dated October 20, 2024 (the “Preliminary Prospectus Supplement”), except that, unless the context requires otherwise, the term “forward sale agreement” as used herein does not include any additional fo

October 21, 2024 EX-99.3

Atlantic Union Bankshares Corporation Announces Pricing of an Underwritten Offering of 9,859,155 Shares of Common Stock

Exhibit 99.3 Atlantic Union Bankshares Corporation Announces Pricing of an Underwritten Offering of 9,859,155 Shares of Common Stock Richmond, Va., October 21, 2024 – Atlantic Union Bankshares Corporation (NYSE: AUB) (“Atlantic Union”) announced today that it priced an underwritten public offering of 9,859,155 shares of its common stock at a price of $35.50 per share (before underwriting discounts

October 21, 2024 425

Click here to view disclosures.

Filed by Atlantic Union Bankshares Corporation (Commission File No.: 001-39325) Pursuant to Rule 425 of the Securities Act of 1933 and deemed filed pursuant to Rule 14a-12 of the Securities Exchange Act of 1934 Subject Company: Sandy Spring Bancorp, Inc. (Commission File No.: 000-19065) The following email was sent to employees of Atlantic Union Bankshares Corporation on October 21, 2024. Header:

October 21, 2024 425

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 21, 2024 ATLANTIC UNION B

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 21, 2024 ATLANTIC UNION BANKSHARES CORPORATION (Exact name of registrant as specified in its charter) Virginia 001-39325 54-1598552 (State or other jurisdiction (Commission (I

October 16, 2024 SC 13G

AUB / Atlantic Union Bankshares Corporation / STATE STREET CORP Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. )* ATLANTIC UNION BANKSHARES CORP (Name of Issuer) COMMON STOCK (Title of Class of Securities) 04911A107 (CUSIP Number) September 30, 2024 (Date of Event Which Requires Filing of This Statement) Check the appropriate box to designate the rule pursuant to which this Schedu

October 1, 2024 8-K

Financial Statements and Exhibits, Other Events

United States SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 1, 2024 ATLANTIC UNION BANKSHARES CORPORATION (Exact name of registrant as specified in its charter) Virginia 001-39325 54-1598552 (State or other jurisdiction (Commission (I.

October 1, 2024 EX-99.1

Atlantic Union Bankshares Corporation To Release Third Quarter 2024 Financial Results

Exhibit 99.1 Atlantic Union Bankshares Corporation To Release Third Quarter 2024 Financial Results Richmond, Va., October 1, 2024 – Atlantic Union Bankshares Corporation (the “Company”) today announced that it will release third quarter 2024 financial results before the market opens on Tuesday, October 22, 2024. Following the release, the Company will host a conference call and webcast for investo

August 6, 2024 EX-31.01

Certification of Principal Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

Exhibit 31.1 CERTIFICATIONS I, John C. Asbury, certify that: 1. I have reviewed this quarterly report on Form 10-Q of Atlantic Union Bankshares Corporation; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not mis

August 6, 2024 S-3ASR

As filed with the Securities and Exchange Commission on August 6, 2024

As filed with the Securities and Exchange Commission on August 6, 2024 Registration Statement No.

August 6, 2024 EX-15.01

Letter regarding unaudited interim financial information.

Exhibit 15.1 The Shareholders and Board of Directors of Atlantic Union Bankshares Corporation: We are aware of the incorporation by reference in the Registration Statements (Form S-3 No. 333-248544, Form S-3 No. 333-102012, Form S-3 No. 333-81199, Form S-8 No. 333-255994, Form S-8 No. 333-203580, Form S-8 No. 333-193364, Form S-8 No. 333-175808, Form S-8 No. 333-113842, Form S-8 No. 333-113839 and

August 6, 2024 EX-31.02

Certification of Principal Financial and Accounting Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

Exhibit 31.2 CERTIFICATIONS I, Robert M. Gorman, certify that: 1. I have reviewed this quarterly report on Form 10-Q of Atlantic Union Bankshares Corporation; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not m

August 6, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended June 30, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File Number: 001-39325 ATLANTIC UNION BANKSHARES CORPORATION

August 6, 2024 EX-FILING FEES

Filing Fee Table (filed herewith).

Calculation of Filing Fee Tables S-3 Atlantic Union Bankshares Corp Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial Effective Date Filing Fee Previously Paid in Connection with Unsold Securities to be Carried Forward Newly Registered Securities Fees to be Paid 1 Equity Common Stock, par value $1.

August 6, 2024 EX-15.1

Acknowledgment of Ernst & Young LLP, as accountants for Atlantic Union (filed herewith).

EX-15.1 3 tm2420582d1ex15-1.htm EXHIBIT 15.1 Exhibit 15.1 The Shareholders and Board of Directors of Atlantic Union Bankshares Corporation: We are aware of the incorporation by reference in the Registration Statement (Form S-3) and related Prospectus of Atlantic Union Bankshares Corporation for the registration of common stock, preferred stock, depositary shares, debt securities, warrants, purchas

August 6, 2024 EX-32.01

Certification of Principal Executive Officer and Principal Financial and Accounting Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

Exhibit 32.1 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350 AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Quarterly Report of Atlantic Union Bankshares Corporation (the “Company”) on Form 10-Q for the quarter ended June 30, 2024 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), the undersigned Chief Executive Off

August 2, 2024 8-K

Regulation FD Disclosure, Financial Statements and Exhibits

United States SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 2, 2024 ATLANTIC UNION BANKSHARES CORPORATION (Exact name of registrant as specified in its charter) Virginia 001-39325 54-1598552 (State or other jurisdiction (Commission (I.R

August 2, 2024 EX-99.1

2 Forward Looking Statements This presentation and statements by our management may constitute “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. Forward-looking statements are statements that inc

Exhibit 99.1 Investor Presentation NYSE: AUB August - September 2024 2 Forward Looking Statements This presentation and statements by our management may constitute “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. Forward-looking statements are statements that include, without limitation, statements on slides entitled “Q2 2024 Highlights,“ “We

July 25, 2024 8-K

Financial Statements and Exhibits, Other Events

United States SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 25, 2024 ATLANTIC UNION BANKSHARES CORPORATION (Exact name of registrant as specified in its charter) Virginia 001-39325 54-1598552 (State or other jurisdiction (Commission (I.R.

July 25, 2024 8-K

United States SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 25, 2024 ATLANTIC UNION BANK

United States SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 25, 2024 ATLANTIC UNION BANKSHARES CORPORATION (Exact name of registrant as specified in its charter) Virginia 001-39325 54-1598552 (State or other jurisdiction (Commission (I.R.

July 25, 2024 EX-99.1

ATLANTIC UNION BANKSHARES REPORTS SECOND QUARTER FINANCIAL RESULTS

Exhibit 99.1 Contact: Robert M. Gorman - (804) 523-7828 Executive Vice President / Chief Financial Officer ATLANTIC UNION BANKSHARES REPORTS SECOND QUARTER FINANCIAL RESULTS Richmond, Va., July 25, 2024 – Atlantic Union Bankshares Corporation (the “Company” or “Atlantic Union”) (NYSE: AUB) reported net income available to common shareholders of $22.2 million and basic and diluted earnings per comm

July 25, 2024 EX-99.2

2 Forward Looking Statements This presentation and statements by our management may constitute “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. Forward-looking statements are statements that inc

Exhibit 99.2 2 nd Quarter 2024 Earnings Presentation NYSE: AUB July 25, 2024 2 Forward Looking Statements This presentation and statements by our management may constitute “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. Forward-looking statements are statements that include, without limitation, statements on slides entitled “Q2 2024 Highligh

July 25, 2024 EX-99.1

Atlantic Union Bankshares Corporation Declares Quarterly Common Stock Dividend and Preferred Stock Dividend

‌ Exhibit 99.1 Atlantic Union Bankshares Corporation Declares Quarterly Common Stock Dividend and Preferred Stock Dividend Richmond, Va., July 25, 2024 – The Board of Directors (the “Board”) of Atlantic Union Bankshares Corporation (the “Company”) has declared a quarterly dividend of $0.32 per share of common stock, which is the same as the second quarter of 2024 and an approximately 7% increase f

July 8, 2024 CORRESP

July 8, 2024

July 8, 2024 Via EDGAR Securities and Exchange Commission Division of Corporation Finance Office of Finance Washington, D.

July 2, 2024 EX-99.1

Atlantic Union Bankshares Corporation To Release Second Quarter 2024 Financial Results

Exhibit 99.1 Atlantic Union Bankshares Corporation To Release Second Quarter 2024 Financial Results Richmond, Va., July 2, 2024 – Atlantic Union Bankshares Corporation (the “Company”) today announced that it will release second quarter 2024 financial results before the market opens on Thursday, July 25, 2024. Following the release, the Company will host a conference call and webcast for investors

July 2, 2024 8-K

Financial Statements and Exhibits, Other Events

United States SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 2, 2024 ATLANTIC UNION BANKSHARES CORPORATION (Exact name of registrant as specified in its charter) Virginia 001-39325 54-1598552 (State or other jurisdiction (Commission (I.R.S

May 10, 2024 EX-99.1

2 Forward Looking Statements This presentation and statements by our management may constitute “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. Forward-looking statements are statements that inc

Exhibit 99.1 Investor Presentation NYSE: AUB May – June 2024 2 Forward Looking Statements This presentation and statements by our management may constitute “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. Forward-looking statements are statements that include, without limitation, statements on slides entitled “Q1 2024 Highlights,“ “Loan and D

May 10, 2024 8-K

Regulation FD Disclosure, Financial Statements and Exhibits

United States SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 10, 2024 ATLANTIC UNION BANKSHARES CORPORATION (Exact name of registrant as specified in its charter) Virginia 001-39325 54-1598552 (State or other jurisdiction (Commission (I.R.S

May 9, 2024 8-K

Submission of Matters to a Vote of Security Holders

United States SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 7, 2024 ATLANTIC UNION BANKSHARES CORPORATION (Exact name of registrant as specified in its charter) Virginia 001-39325 54-1598552 (State or other jurisdiction (Commission (I.R.S.

May 9, 2024 8-K/A

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

/A United States SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K/A (Amendment No. 2) CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 7, 2024 (April 1, 2024) ATLANTIC UNION BANKSHARES CORPORATION (Exact name of registrant as specified in its charter) Virginia 001-39325 54-1598552 (State or

May 7, 2024 EX-99.1

Atlantic Union Bankshares Corporation Declares Quarterly Common Stock Dividend and Preferred Stock Dividend

‌ Exhibit 99.1 Atlantic Union Bankshares Corporation Declares Quarterly Common Stock Dividend and Preferred Stock Dividend Richmond, Va., May 7, 2024 – The Board of Directors (the “Board”) of Atlantic Union Bankshares Corporation (the “Company”) has declared a quarterly dividend of $0.32 per share of common stock, which is the same as the first quarter of 2024 and an approximately 7% increase from

May 7, 2024 8-K

Regulation FD Disclosure, Financial Statements and Exhibits

United States SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 7, 2024 ATLANTIC UNION BANKSHARES CORPORATION (Exact name of registrant as specified in its charter) Virginia 001-39325 54-1598552 (State or other jurisdiction (Commission (I.R.S.

May 7, 2024 8-K

Financial Statements and Exhibits, Other Events

United States SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 7, 2024 ATLANTIC UNION BANKSHARES CORPORATION (Exact name of registrant as specified in its charter) Virginia 001-39325 54-1598552 (State or other jurisdiction (Commission (I.R.S.

May 7, 2024 EX-99.1

2 Forward Looking Statements This presentation and statements by our management may constitute “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. Forward-looking statements are statements that inc

Exhibit 99.1 Annual Shareholders’ Meeting NYSE: AUB May 7, 2024 2 Forward Looking Statements This presentation and statements by our management may constitute “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. Forward-looking statements are statements that include, without limitation, statements on slides entitled “Q1 2024 Highlights and FY 202

May 2, 2024 EX-31.02

Certification of Principal Financial and Accounting Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

Exhibit 31.2 CERTIFICATIONS I, Robert M. Gorman, certify that: 1. I have reviewed this quarterly report on Form 10-Q of Atlantic Union Bankshares Corporation; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not m

May 2, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended March 31, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File Number: 001-39325 ATLANTIC UNION BANKSHARES CORPORATIO

May 2, 2024 EX-10.12

Management Incentive Plan (incorporated by reference to Exhibit 10.12 to Quarterly Report on Form 10-Q filed on May 2, 2024)

Exhibit 10.12 Atlantic Union Bankshares Corporation Management Incentive Plan This document (the “Incentive Document”), together with the Atlantic Union Bankshares Corporation Incentive Plan Terms and Conditions (“T&C”) which are incorporated herein by reference, sets forth the Atlantic Union Bankshares Corporation Management Incentive Plan (collectively, the “Plan”). The Plan is offered by Atlant

May 2, 2024 EX-32.01

Certification of Principal Executive Officer and Principal Financial and Accounting Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

Exhibit 32.1 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350 AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Quarterly Report of Atlantic Union Bankshares Corporation (the “Company”) on Form 10-Q for the quarter ended March 31, 2024 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), the undersigned Chief Executive Of

May 2, 2024 EX-15.01

Letter regarding unaudited interim financial information.

Exhibit 15.1 The Shareholders and Board of Directors of Atlantic Union Bankshares Corporation: We are aware of the incorporation by reference in the Registration Statements (Form S-3 No. 333-248544, Form S-3 No. 333-102012, Form S-3 No. 333-81199, Form S-8 No. 333-255994, Form S-8 No. 333-203580, Form S-8 No. 333-193364, Form S-8 No. 333-175808, Form S-8 No. 333-113842, Form S-8 No. 333-113839 and

May 2, 2024 EX-31.01

Certification of Principal Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

Exhibit 31.1 CERTIFICATIONS I, John C. Asbury, certify that: 1. I have reviewed this quarterly report on Form 10-Q of Atlantic Union Bankshares Corporation; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not mis

April 23, 2024 EX-99.1

ATLANTIC UNION BANKSHARES REPORTS FIRST QUARTER FINANCIAL RESULTS

Exhibit 99.1 Contact: Robert M. Gorman - (804) 523-7828 Executive Vice President / Chief Financial Officer ATLANTIC UNION BANKSHARES REPORTS FIRST QUARTER FINANCIAL RESULTS Richmond, Va., April 23, 2024 – Atlantic Union Bankshares Corporation (the “Company” or “Atlantic Union”) (NYSE: AUB) reported net income available to common shareholders of $46.8 million and basic and diluted earnings per comm

April 23, 2024 EX-99.2

2 Forward Looking Statements This presentation and statements by our management may constitute “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. Forward-looking statements are statements that inc

Exhibit 99.2 1 st Quarter 2024 Earnings Presentation NYSE: AUB April 23, 2024 2 Forward Looking Statements This presentation and statements by our management may constitute “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. Forward-looking statements are statements that include, without limitation, statements on slides entitled “Q1 2024 Highlig

April 23, 2024 8-K

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

United States SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 23, 2024 ATLANTIC UNION BANKSHARES CORPORATION (Exact name of registrant as specified in its charter) Virginia 001-39325 54-1598552 (State or other jurisdiction (Commission (I.R

April 18, 2024 EX-99.1

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

Exhibit 99.1 REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM To the Board of Directors and Shareholders American National Bankshares Inc. Danville, Virginia Opinion on the Financial Statements We have audited the accompanying consolidated balance sheets of American National Bankshares Inc. and its Subsidiary (the Company) as of December 31, 2023 and 2022, the related consolidated statement

April 18, 2024 EX-99.2

UNAUDITED PRO FORMA CONDENSED COMBINED FINANCIAL INFORMATION

Exhibit 99.2 UNAUDITED PRO FORMA CONDENSED COMBINED FINANCIAL INFORMATION On April 1, 2024, Atlantic Union Bankshares Corporation (“Atlantic Union”) completed its previously announced merger with American National Bankshares Inc. (“American National”), pursuant to the Agreement and Plan of Merger, dated as of July 24, 2023, by and between Atlantic Union and American National. At the effective time

April 18, 2024 8-K/A

Financial Statements and Exhibits

United States SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K/A (Amendment No. 1) CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 18, 2024 (April 1, 2024) ATLANTIC UNION BANKSHARES CORPORATION (Exact name of registrant as specified in its charter) Virginia 001-39325 54-1598552 (State or

April 1, 2024 EX-99.1

Atlantic Union Bankshares Corporation Completes Acquisition of American National Bankshares Inc.

Exhibit 99.1 Atlantic Union Bankshares Corporation Completes Acquisition of American National Bankshares Inc. Richmond, Va., April 1, 2024 – Atlantic Union Bankshares Corporation (“Atlantic Union”) announced today that it has completed its previously announced merger with American National Bankshares Inc. (“American National”), effective April 1, 2024. This transaction strengthens Atlantic Union’s

April 1, 2024 8-K

United States SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 1, 2024 ATLANTIC UNION BANK

United States SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 1, 2024 ATLANTIC UNION BANKSHARES CORPORATION (Exact name of registrant as specified in its charter) Virginia 001-39325 54-1598552 (State or other jurisdiction (Commission (I.R.

March 27, 2024 EX-99.1

Atlantic Union Bankshares Corporation To Release First Quarter 2024 Financial Results

Exhibit 99.1 Atlantic Union Bankshares Corporation To Release First Quarter 2024 Financial Results Richmond, Va., March 27, 2024 – Atlantic Union Bankshares Corporation (the “Company”) today announced that it will release first quarter 2024 financial results before the market opens on Tuesday, April 23, 2024. Following the release, the Company will host a conference call and webcast for investors

March 27, 2024 8-K

Financial Statements and Exhibits, Other Events

United States SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 27, 2024 ATLANTIC UNION BANKSHARES CORPORATION (Exact name of registrant as specified in its charter) Virginia 001-39325 54-1598552 (State or other jurisdiction (Commission (I.R

March 26, 2024 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.   )

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.   ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permit

March 26, 2024 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.   )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.   ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(

February 23, 2024 EX-99.1

Atlantic Union Bankshares Corporation Announces Receipt of Regulatory Approvals to Complete Merger with American National Bankshares Inc.

Exhibit 99.1 Atlantic Union Bankshares Corporation Announces Receipt of Regulatory Approvals to Complete Merger with American National Bankshares Inc. Richmond, Va., February 23, 2024 – Atlantic Union Bankshares Corporation announced today that it has received regulatory approval from the Board of Governors of the Federal Reserve System (the “Federal Reserve”) to complete the previously announced

February 23, 2024 8-K

Financial Statements and Exhibits, Other Events

United States SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 23, 2024 ATLANTIC UNION BANKSHARES CORPORATION (Exact name of registrant as specified in its charter) Virginia 001-39325 54-1598552 (State or other jurisdiction (Commission (

February 22, 2024 EX-21.1

List of subsidiaries of Atlantic Union Bankshares Corporation (incorporated by reference to Exhibit 21.1 of Form 10-K for the fiscal year ended December 31, 2023, filed February 22, 2024)

Exhibit 21.1 Subsidiaries of Atlantic Union Bankshares Corporation Subsidiary State of Incorporation or Organization Atlantic Union Bank Virginia Atlantic Union Equipment Finance, Inc. Virginia AUB Investments, Inc. Delaware Atlantic Union Financial Consultants, LLC Virginia Union Insurance Group, LLC Virginia Atlantic Union Public Finance, Inc. Virginia

February 22, 2024 EX-10.25

Form of Performance Share Unit Agreement under Atlantic Union Bankshares Corporation Stock and Incentive Plan (for awards with a relative TSR performance measure granted on or after February 22, 2024)

Exhibit 10.25 ATLANTIC UNION BANKSHARES CORPORATION PERFORMANCE SHARE UNIT AGREEMENT Granted <> This Performance Share Unit Agreement (this “Agreement”) is entered into as of <> pursuant to Article X of the Atlantic Union Bankshares Corporation Stock and Incentive Plan, as amended from time to time (the “Plan”), and evidences the grant, and the terms, conditions and restrictions pertaining thereto

February 22, 2024 EX-97.1

Atlantic Union Bankshares Corporation Incentive Compensation Recovery Policy

Exhibit 97.1 Incentive Compensation Recovery Policy I. Purpose The Board of Directors (the “Board”) of Atlantic Union Bankshares Corporation (the “Corporation”) believes that it is in the best interest of the Corporation and its shareholders to create and maintain a culture that emphasizes integrity and accountability and that reinforces the Corporation’s “pay-for-performance” philosophy. The Boar

February 22, 2024 EX-4.6

Exhibit 4.6

Exhibit 4.6 DESCRIPTION OF THE REGISTRANT’S SECURITIES REGISTERED PURSUANT TO SECTION 12 OF THE SECURITIES EXCHANGE ACT OF 1934, AS AMENDED As of the filing date of the Annual Report on Form 10-K (the “Form 10-K”) of which this exhibit (this “Exhibit”) is a part, Atlantic Union Bankshares Corporation (the “Company”) had the following outstanding securities registered pursuant to Section 12 of the

February 22, 2024 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☒ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2023 ☐TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission file number: 001-39325 ATLANTIC UNION BANKSHARES CORPORATION (Exact n

February 13, 2024 SC 13G/A

AUB / Atlantic Union Bankshares Corporation / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SC 13G/A 1 tv0358-atlanticunionbankshar.htm SCHEDULE 13G/A SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 7)* Name of issuer: Atlantic Union Bankshares Corp Title of Class of Securities: Common Stock CUSIP Number: 04911A107 Date of Event Which Requires Filing of this Statement: December 29, 2023 Check the appropriate

February 13, 2024 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

United States SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 12, 2024 ATLANTIC UNION BANKSHARES CORPORATION (Exact name of registrant as specified in its charter) Virginia 001-39325 54-1598552 (State or other jurisdiction (Commission (

February 9, 2024 SC 13G/A

AUB / Atlantic Union Bankshares Corporation / DIMENSIONAL FUND ADVISORS LP - SEC SCHEDULE 13G Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 9 )* Atlantic Union Bankshares Corp (Name of Issuer) Common Stock (Title of Class of Securities) 04911A107 (CUSIP Number) December 29, 2023 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to wh

February 1, 2024 8-K

Regulation FD Disclosure, Financial Statements and Exhibits

United States SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 1, 2024 ATLANTIC UNION BANKSHARES CORPORATION (Exact name of registrant as specified in its charter) Virginia 001-39325 54-1598552 (State or other jurisdiction (Commission (I

February 1, 2024 EX-99.1

2 Forward Looking Statements This presentation and statements by our management may constitute “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. Forward-looking statements are statements that inc

Exhibit 99.1 Investor Presentation NYSE: AUB February – March 2024 2 Forward Looking Statements This presentation and statements by our management may constitute “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. Forward-looking statements are statements that include, without limitation, statements on slides entitled "Q4 2023 Highlights and FY

January 29, 2024 8-K/A

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

/A United States SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K/A CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): December 8, 2023 ATLANTIC UNION BANKSHARES CORPORATION (Exact name of registrant as specified in its charter) Virginia 001-39325 54-1598552 (State or other jurisdiction (Commissi

January 26, 2024 EX-99.1

Atlantic Union Bankshares Corporation Declares Quarterly Common Stock Dividend and Preferred Stock Dividend

‌ Exhibit 99.1 Atlantic Union Bankshares Corporation Declares Quarterly Common Stock Dividend and Preferred Stock Dividend Richmond, Va., January 26, 2024 – The Board of Directors (the “Board”) of Atlantic Union Bankshares Corporation (the “Company”) has declared a quarterly dividend of $0.32 per share of common stock, which is the same as the fourth quarter of 2023 and an approximately 7% increas

January 26, 2024 8-K

Financial Statements and Exhibits, Other Events

United States SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 26, 2024 ATLANTIC UNION BANKSHARES CORPORATION (Exact name of registrant as specified in its charter) Virginia 001-39325 54-1598552 (State or other jurisdiction (Commission (I

January 23, 2024 8-K

United States SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 23, 2024 ATLANTIC UNION B

United States SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 23, 2024 ATLANTIC UNION BANKSHARES CORPORATION (Exact name of registrant as specified in its charter) Virginia 001-39325 54-1598552 (State or other jurisdiction (Commission (I

January 23, 2024 EX-99.2

2 Forward Looking Statements This presentation and statements by our management may constitute “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. Forward-looking statements are statements that inc

Exhibit 99.2 4th Quarter and Full Year 2023 Earnings Presentation NYSE: AUB January 23, 2024 2 Forward Looking Statements This presentation and statements by our management may constitute “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. Forward-looking statements are statements that include, without limitation, statements on slides entitled "

January 23, 2024 EX-99.1

ATLANTIC UNION BANKSHARES REPORTS FOURTH QUARTER AND FULL YEAR FINANCIAL RESULTS

Exhibit 99.1 Contact: Robert M. Gorman - (804) 523-7828 Executive Vice President / Chief Financial Officer ATLANTIC UNION BANKSHARES REPORTS FOURTH QUARTER AND FULL YEAR FINANCIAL RESULTS Richmond, Va., January 23, 2024 – Atlantic Union Bankshares Corporation (the “Company” or “Atlantic Union”) (NYSE: AUB) reported net income available to common shareholders of $53.9 million and basic and diluted

January 3, 2024 8-K

Financial Statements and Exhibits, Other Events

United States SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 3, 2024 ATLANTIC UNION BANKSHARES CORPORATION (Exact name of registrant as specified in its charter) Virginia 001-39325 54-1598552 (State or other jurisdiction (Commission (I.

January 3, 2024 EX-99.1

Atlantic Union Bankshares Corporation To Release Fourth Quarter and Full Year 2023 Financial Results

Exhibit 99.1 Atlantic Union Bankshares Corporation To Release Fourth Quarter and Full Year 2023 Financial Results Richmond, Va., January 3, 2024 – Atlantic Union Bankshares Corporation (the “Company”) today announced that it will release fourth quarter and full year 2023 financial results before the market opens on Tuesday, January 23, 2024. Following the release, the Company will host a conferenc

December 8, 2023 EX-3.2

Amended and Restated Bylaws of Atlantic Union Bankshares Corporation, effective as of December 6, 2023 (incorporated by reference to Exhibit 3.2 to Current Report on Form 8-K filed on December 8, 2023).

Exhibit 3.2 AMENDED AND RESTATED BYLAWS OF ATLANTIC UNION BANKSHARES CORPORATION Effective as of December 6, 2023 Table of Contents Page ARTICLE I MEETINGS OF SHAREHOLDERS Section 1.Places of Meetings‌1 Section 2.Annual Meeting‌1 Section 3.Special Meetings‌1 Section 4.Notice of Shareholder Business‌1 Section 5.Notice of Meeting‌8 Section 6.Waiver of Notice‌8 Section 7.Quorum‌8 Section 8.Proxies‌9

December 8, 2023 EX-3.2-1

Amended and Restated Bylaws of Atlantic Union Bankshares Corporation, effective as of December 6, 2023 (redline version)

Exhibit 3.2.1 AMENDED AND RESTATED BYLAWS OF ATLANTIC UNION BANKSHARES CORPORATION Effective as of December 56, 20192023 Table of Contents Page ARTICLE I MEETINGS OF SHAREHOLDERS Section 1.Places of Meetings‌1 Section 2.Annual Meeting‌1 Section 3.Special Meetings‌1 Section 4.Notice of Shareholder Business‌1 Section 5.Notice of Meeting‌8 Section 6.Waiver of Notice‌8 Section 7.Quorum‌8 Section 8.Pro

December 8, 2023 8-K

United States SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): December 8, 2023 ATLANTIC UNION B

United States SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): December 8, 2023 ATLANTIC UNION BANKSHARES CORPORATION (Exact name of registrant as specified in its charter) Virginia 001-39325 54-1598552 (State or other jurisdiction (Commission (I

December 8, 2023 EX-99.1

Atlantic Union Bankshares Corporation Names Three New Board Members

Exhibit 99.1 Atlantic Union Bankshares Corporation Names Three New Board Members Richmond, Va., December 8, 2023 – Atlantic Union Bankshares Corporation (the “Company”) (NYSE: AUB) announced today that its Board of Directors (the “Board”) has appointed three new members—Paul Engola, Donald R. Kimble and Michele A. O’Hara—effective immediately. “We are pleased to add three highly respected business

December 7, 2023 EX-99.1

Atlantic Union Bank Comments on Settlement with the Consumer Financial Protection Bureau

Exhibit 99.1 Atlantic Union Bank Comments on Settlement with the Consumer Financial Protection Bureau RICHMOND, Va., December 7, 2023 – Atlantic Union Bank (“Atlantic Union”), a subsidiary of Atlantic Union Bankshares Corporation, announced today it has settled an investigation by the Consumer Financial Protection Bureau (“CFPB”) into certain practices of Atlantic Union during the period from 2017

December 7, 2023 8-K

United States SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): December 7, 2023 ATLANTIC UNION B

United States SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): December 7, 2023 ATLANTIC UNION BANKSHARES CORPORATION (Exact name of registrant as specified in its charter) Virginia 001-39325 54-1598552 (State or other jurisdiction (Commission (I

November 2, 2023 EX-15.1

Letter regarding unaudited interim financial information.

Exhibit 15.1 The Shareholders and Board of Directors of Atlantic Union Bankshares Corporation: We are aware of the incorporation by reference in the Registration Statements (Form S-4 No. 333-274490, Form S-3 No. 333-248544, Form S-3 No. 333-102012, Form S-3 No. 333-81199, Form S-8 No. 333-255994, Form S-8 No. 333-203580, Form S-8 No. 333-193364, Form S-8 No. 333-175808, Form S-8 No. 333-113842, Fo

November 2, 2023 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended September 30, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File Number: 001-39325 ATLANTIC UNION BANKSHARES CORPOR

November 2, 2023 EX-10.2

Exhibit 10.2

Exhibit 10.2 SCHEDULE OF NON-EMPLOYEE DIRECTOR COMPENSATION OF ATLANTIC UNION BANKSHARES CORPORATION Effective January 1, 2024 Annual Cash Retainer and Fees by Position (1) Amount Non-Employee Directors (2) $50,000 Additional Fee to Chairperson of the Board $80,000 Additional Fee to Vice Chairperson of the Board $20,000 Additional Fee to Audit Committee Chair $22,500 Additional Fee to Compensation

October 30, 2023 8-K

Regulation FD Disclosure, Financial Statements and Exhibits

United States SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 30, 2023 ATLANTIC UNION BANKSHARES CORPORATION (Exact name of registrant as specified in its charter) Virginia 001-39325 54-1598552 (State or other jurisdiction (Commission (I

October 30, 2023 EX-99

2 Forward Looking Statements This presentation and statements by our management may constitute “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. Forward-looking statements are statements that inc

Exhibit 99 Investor Presentation NYSE: AUB November – December 2023 2 Forward Looking Statements This presentation and statements by our management may constitute “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995.

October 26, 2023 8-K

United States SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 26, 2023 ATLANTIC UNION B

United States SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 26, 2023 ATLANTIC UNION BANKSHARES CORPORATION (Exact name of registrant as specified in its charter) Virginia 001-39325 54-1598552 (State or other jurisdiction (Commission (I

October 26, 2023 EX-99.1

Atlantic Union Bankshares Corporation Declares Quarterly Common Stock Dividend and Preferred Stock Dividend

‌ Exhibit 99.1 Atlantic Union Bankshares Corporation Declares Quarterly Common Stock Dividend and Preferred Stock Dividend Richmond, Va., October 26, 2023 – The Board of Directors (the “Board”) of Atlantic Union Bankshares Corporation (the “Company”) has declared a quarterly dividend of $0.32 per share of common stock, which is an approximately 7% increase from the dividend in the third quarter of

October 19, 2023 EX-99.1

ATLANTIC UNION BANKSHARES REPORTS THIRD QUARTER FINANCIAL RESULTS

Exhibit 99.1 Contact: Robert M. Gorman - (804) 523-7828 Executive Vice President / Chief Financial Officer ATLANTIC UNION BANKSHARES REPORTS THIRD QUARTER FINANCIAL RESULTS Richmond, Va., October 19, 2023 – Atlantic Union Bankshares Corporation (the “Company” or “Atlantic Union”) (NYSE: AUB) reported net income available to common shareholders of $51.1 million and basic and diluted earnings per co

October 19, 2023 8-K

United States SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 19, 2023 ATLANTIC UNION B

United States SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 19, 2023 ATLANTIC UNION BANKSHARES CORPORATION (Exact name of registrant as specified in its charter) Virginia 001-39325 54-1598552 (State or other jurisdiction (Commission (I

October 19, 2023 EX-99.2

2 Forward Looking Statements This presentation and statements by our management may constitute “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. Forward-looking statements are statements that inc

Exhibit 99.2 3rd Quarter 2023 Earnings Presentation NYSE: AUB October 19, 2023 2 Forward Looking Statements This presentation and statements by our management may constitute “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. Forward-looking statements are statements that include, without limitation, statements on slides entitled "Q3 2023 Highli

September 29, 2023 424B3

PROPOSED MERGER — YOUR VOTE IS VERY IMPORTANT

TABLE OF CONTENTS  Filed Pursuant to Rule 424(b)(3)  Registration Statement No. 333-274490 PROPOSED MERGER — YOUR VOTE IS VERY IMPORTANT Dear Shareholders of American National Bankshares Inc.: On July 24, 2023, Atlantic Union Bankshares Corporation, which we refer to as Atlantic Union, a Virginia corporation, and American National Bankshares Inc., which we refer to as American National, a Virginia

September 28, 2023 8-K

Financial Statements and Exhibits, Other Events

United States SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): September 28, 2023 ATLANTIC UNION BANKSHARES CORPORATION (Exact name of registrant as specified in its charter) Virginia 001-39325 54-1598552 (State or other jurisdiction (Commission

September 28, 2023 EX-99.1

Atlantic Union Bankshares Corporation To Release Third Quarter 2023 Financial Results

Exhibit 99.1 Atlantic Union Bankshares Corporation To Release Third Quarter 2023 Financial Results Richmond, Va., September 28, 2023 – Atlantic Union Bankshares Corporation (the “Company”) today announced that it will release third quarter 2023 financial results before the market opens on Thursday, October 19, 2023. Following the release, the Company will host a conference call and webcast for inv

September 27, 2023 CORRESP

2

September 27, 2023 VIA EDGAR United States Securities and Exchange Commission Division of Corporation Finance 100 F Street, N.

September 26, 2023 EX-99.5

Form of proxy to be mailed to shareholders of American National Bankshares Inc.

Exhibit 99.5 1UPX Using a black ink pen, mark your votes with an X as shown in this example. Please do not write outside the designated areas. 03VW5C + + A Proposals — The Board of Directors recommends a vote FOR Proposals 1, 2 and 3. Please sign exactly as name(s) appears hereon. Joint owners should each sign. When signing as attorney, executor, administrator, corporate officer, trustee, guardian

September 26, 2023 EX-15.1

Acknowledgement of Ernst & Young LLP, Atlantic Union Bankshares Corporation’s independent

Exhibit 15.1 Stockholders and Board of Directors of Atlantic Union Bankshares Corporation We are aware of the incorporation by reference in Amendment No. 1 to the Registration Statement (Form S-4) of Atlantic Union Bankshares Corporation and the related Proxy Statement/Prospectus of Atlantic Union Bankshares Corporation and American National Bankshares Inc. for the registration of shares of Atlant

September 26, 2023 EX-99.2

Consent of Keefe, Bruyette & Woods, Inc.

Exhibit 99.2 CONSENT OF KEEFE, BRUYETTE & WOODS, INC. We hereby consent to the inclusion of our opinion letter to the Board of Directors of American National Bankshares Inc. (“American National”) as Annex C to the Proxy Statement/Prospectus which forms a part of Amendment No. 1 to the Registration Statement on Form S-4 filed on the date hereof (the “Registration Statement”) relating to the propose

September 26, 2023 EX-FILING FEES

Filing Fee Table

Exhibit 107 Calculation of Filing Fee Tables Form S-4 (Form Type) Atlantic Union Bankshares Corporation (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered(1) Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price(2) Fee Rate Amount of Registration Fee(3) Carry Forward Form Type Carry Forward File Number Carry Forward Initial Effective Date Filing Fee Previously Paid in Connection with Unsold Securities to be Carried Forward Newly Registered Securities Fees to be Paid — — — — — — — Fees Previously Paid Equity Common stock, par value $1.

September 26, 2023 S-4/A

As filed with the Securities and Exchange Commission on September 26, 2023

TABLE OF CONTENTS As filed with the Securities and Exchange Commission on September 26, 2023 Registration No.

September 21, 2023 8-K

Regulation FD Disclosure, Entry into a Material Definitive Agreement, Financial Statements and Exhibits

United States SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): September 20, 2023 ATLANTIC UNION BANKSHARES CORPORATION (Exact name of registrant as specified in its charter) Virginia 001-39325 54-1598552 (State or other jurisdiction (Commission

September 21, 2023 EX-10.1

Agreement for Purchase and Sale of Real Property, dated September 20, 2023, by and between Atlantic Union Bank and Blue Owl AUB Owner LLC (incorporated by reference to Exhibit 10.1 to Current Report on Form 8-K filed on September 21, 2023)**

EXHIBIT 10.1 EXECUTION VERSION AGREEMENT FOR PURCHASE AND SALE OF REAL PROPERTY THIS AGREEMENT FOR PURCHASE AND SALE OF REAL PROPERTY (this “Agreement”) is made as of this 20th day of September, 2023 (the “Effective Date”), by and between BLUE OWL AUB VA OWNER LLC, a Delaware limited liability company (collectively, “Buyer”), and ATLANTIC UNION BANK, a Virginia banking corporation (“Seller”). FOR

September 12, 2023 EX-FILING FEES

Filing Fee Table

Exhibit 107 Calculation of Filing Fee Tables Form S-4 (Form Type) Atlantic Union Bankshares Corporation (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered(1) Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price(2) Fee Rate Amount of Registration Fee(3) Carry Forward Form Type Carry Forward File Number Carry Forward Initial Effective Date Filing Fee Previously Paid in Connection with Unsold Securities to be Carried Forward Newly Registered Securities Fees to be Paid Equity Common stock, par value $1.

September 12, 2023 EX-99.4

Consent of Joel R. Shepherd

Exhibit 99.4 CONSENT OF Joel R. Shepherd September 12, 2023 Pursuant to Rule 438 promulgated under the Securities Act of 1933, as amended (the “Securities Act”), I hereby consent to my being named in the Registration Statement on Form S-4 of Atlantic Union Bankshares Corporation (“Atlantic Union”) filed on the date hereof and all amendments thereto (the “Registration Statement”), and any related p

September 12, 2023 EX-99.3

Consent of Nancy Howell Agee

Exhibit 99.3 CONSENT OF NANCY HOWELL AGEE September 12, 2023 Pursuant to Rule 438 promulgated under the Securities Act of 1933, as amended (the “Securities Act”), I hereby consent to my being named in the Registration Statement on Form S-4 of Atlantic Union Bankshares Corporation (“Atlantic Union”) filed on the date hereof and all amendments thereto (the “Registration Statement”), and any related

September 12, 2023 EX-99.2

Consent of Keefe, Bruyette & Woods, Inc.

Exhibit 99.2 CONSENT OF KEEFE, BRUYETTE & WOODS, INC. We hereby consent to the inclusion of our opinion letter to the Board of Directors of American National Bankshares Inc. (“American National”) as Annex C to the Proxy Statement/Prospectus which forms a part of the Registration Statement on Form S-4 filed on the date hereof (the “Registration Statement”) relating to the proposed merger of America

September 12, 2023 EX-15.1

Acknowledgement of Ernst & Young LLP, Atlantic Union Bankshares Corporation’s independent

Exhibit 15.1 Stockholders and Board of Directors of Atlantic Union Bankshares Corporation We are aware of the incorporation by reference in the Registration Statement (Form S-4) Atlantic Union Bankshares Corporation and the related Proxy Statement/Prospectus of Atlantic Union Bankshares Corporation and American National Bankshares Inc. for the registration of shares of Atlantic Union Bankshares Co

September 12, 2023 S-4

As filed with the Securities and Exchange Commission on September 12, 2023

TABLE OF CONTENTS As filed with the Securities and Exchange Commission on September 12, 2023 Registration No.

August 3, 2023 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended June 30, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File Number: 001-39325 ATLANTIC UNION BANKSHARES CORPORATION

August 3, 2023 EX-15.1

Letter regarding unaudited interim financial information.

Exhibit 15.1 The Shareholders and Board of Directors of Atlantic Union Bankshares Corporation: We are aware of the incorporation by reference in the Registration Statements (Form S-3 No. 333-248544, Form S-3 No. 333-102012, Form S-3 No. 333-81199, Form S-8 No. 333-255994, Form S-8 No. 333-203580, Form S-8 No. 333-193364, Form S-8 No. 333-175808, Form S-8 No. 333-113842, Form S-8 No. 333-113839 and

July 31, 2023 EX-99.1

3 Additional Information Non-GAAP Financial Measures This presentation contains certain financial information determined by methods other than in accordance with generally accepted accounting principles in the United States (“GAAP”). These non-GAAP f

Exhibit 99.1 Investor Presentation NYSE: AUB August - September 2023 2 Forward Looking Statements This presentation and statements by our management may constitute “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. Forward-looking statements are statements that include, without limitation, statements on slides entitled “Financial Outlook” and "

July 31, 2023 8-K

United States SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 31, 2023 ATLANTIC UNION BANK

United States SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 31, 2023 ATLANTIC UNION BANKSHARES CORPORATION (Exact name of registrant as specified in its charter) Virginia 001-39325 54-1598552 (State or other jurisdiction (Commission (I.R.

July 27, 2023 8-K

United States SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 27, 2023 ATLANTIC UNION BANK

United States SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 27, 2023 ATLANTIC UNION BANKSHARES CORPORATION (Exact name of registrant as specified in its charter) Virginia 001-39325 54-1598552 (State or other jurisdiction (Commission (I.R.

July 27, 2023 EX-99.1

Atlantic Union Bankshares Corporation Declares Quarterly Common Stock Dividend and Preferred Stock Dividend

‌ Exhibit 99.1 Atlantic Union Bankshares Corporation Declares Quarterly Common Stock Dividend and Preferred Stock Dividend Richmond, Va., July 27, 2023 – The Board of Directors (the “Board”) of Atlantic Union Bankshares Corporation (the “Company”) has declared a quarterly dividend of $0.30 per share of common stock, which is the same as the second quarter of 2023 and the third quarter of 2022. Bas

July 25, 2023 EX-99.3

Merger Investor Presentation NYSE: AUB July 25, 2023

Exhibit 99.3 Merger Investor Presentation NYSE: AUB July 25, 2023 2 Caution About Forward - Looking Statements Certain statements in this presentation constitute “forward - looking statements” within the meaning of the Private Securities Lit igation Reform Act of 1995. Examples of forward - looking statements include, but are not limited to, statements regarding the outlook and expectations of Atl

July 25, 2023 EX-99.1

FORM OF AFFILIATE AGREEMENT

Exhibit 99.1 FORM OF AFFILIATE AGREEMENT THIS AFFILIATE AGREEMENT (the “Agreement”), dated as of July 24, 2023, is by and among Atlantic Union Bankshares Corporation, a Virginia corporation (“Buyer”), American National Bankshares Inc., a Virginia corporation (“AMNB”), and the undersigned shareholder [and director][and executive officer] of AMNB (the “Shareholder”), in such person’s capacity as a s

July 25, 2023 EX-2.1

Agreement and Plan of Merger by and between Atlantic Union Bankshares Corporation and American National Bankshares Inc. dated July 24, 2023 (incorporated by reference to Exhibit 2.1 to Current Report on Form 8-K filed on July 25, 2023).*

Exhibit 2.1 Execution Version AGREEMENT AND PLAN OF MERGER by and between ATLANTIC UNION BANKSHARES CORPORATION, and AMERICAN NATIONAL BANKSHARES INC. Dated as of July 24, 2023 TABLE OF CONTENTS ARTICLE I THE MERGER 1.1 The Merger 2 1.2 Closing 2 1.3 Effective Time 2 1.4 Effects of the Merger 2 1.5 Conversion of AMNB Common Stock 2 1.6 Buyer Stock 3 1.7 Treatment of AMNB Equity Awards 3 1.8 Articl

July 25, 2023 EX-99.1

ATLANTIC UNION BANKSHARES REPORTS SECOND QUARTER FINANCIAL RESULTS

Exhibit 99.1 Contact: Robert M. Gorman - (804) 523-7828 Executive Vice President / Chief Financial Officer ATLANTIC UNION BANKSHARES REPORTS SECOND QUARTER FINANCIAL RESULTS Richmond, Va., July 25, 2023 – Atlantic Union Bankshares Corporation (the “Company” or “Atlantic Union”) (NYSE: AUB) reported net income available to common shareholders of $52.3 million and basic and diluted earnings per comm

July 25, 2023 EX-99.2

Atlantic Union Bankshares Corporation Announces Agreement to Acquire American National Bankshares Inc.

Exhibit 99.2 Atlantic Union Bankshares Corporation Announces Agreement to Acquire American National Bankshares Inc. Richmond, Va. and Danville, Va., July 25, 2023 – Atlantic Union Bankshares Corporation (“Atlantic Union”) (NYSE: AUB) and American National Bankshares Inc. (“American National”) (Nasdaq: AMNB) jointly announced today that they have entered into a definitive merger agreement for Atlan

July 25, 2023 EX-99.1

FORM OF AFFILIATE AGREEMENT

Exhibit 99.1 FORM OF AFFILIATE AGREEMENT THIS AFFILIATE AGREEMENT (the “Agreement”), dated as of July 24, 2023, is by and among Atlantic Union Bankshares Corporation, a Virginia corporation (“Buyer”), American National Bankshares Inc., a Virginia corporation (“AMNB”), and the undersigned shareholder [and director][and executive officer] of AMNB (the “Shareholder”), in such person’s capacity as a s

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