ZIXI / Zix Corp. - Pengajuan SECLaporan Tahunan, Pernyataan Proksi

Zix Corp.
US ˙ NASDAQ ˙ US98974P1003
HINDI NA ACTIVE ANG SIMBONG ITO

Mga Batayang Estadistika
CIK 855612
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 Zix Corp.
SEC Filings (Chronological Order)
Halaman ini menyediakan daftar lengkap dan kronologis dari Pengajuan SEC, tidak termasuk pengajuan kepemilikan yang kami sediakan di tempat lain.
February 9, 2022 SC 13G/A

ZIXI / Zix Corporation / SPRING CREEK CAPITAL LLC - SC 13G/A Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 1)* Zix Corporation (Name of Issuer) Common Stock, par value $0.01 per share (Title of Class of Securities) 98974P100 (CUSIP Number) December 31, 2021 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pur

January 3, 2022 15-12G

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 15 CERTIFICATION AND NOTICE OF TERMINATION OF REGISTRATION UNDER SECTION 12(g) OF THE SECURITIES EXCHANGE ACT OF 1934 OR SUSPENSION OF DUTY TO FILE REPORTS UNDER SECTIONS 13

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 15 CERTIFICATION AND NOTICE OF TERMINATION OF REGISTRATION UNDER SECTION 12(g) OF THE SECURITIES EXCHANGE ACT OF 1934 OR SUSPENSION OF DUTY TO FILE REPORTS UNDER SECTIONS 13 AND 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934. Commission File Number: 0-17995 ZIX CORPORATION (Exact name of registrant as specified in its chart

December 23, 2021 EX-3.2

Third Amended and Restated Bylaws of Zix Corporation

Exhibit 3.2 THIRD AMENDED AND RESTATED BYLAWS OF ZIX CORPORATION ARTICLE I OFFICES SECTION 1. REGISTERED OFFICE. The registered office shall be established and maintained at the office of Corporation Service Company d/b/a CSC-Lawyers Incorporating Service Company, in the City of Austin, in Travis County, in the State of Texas, and said corporation shall be the registered agent of this corporation

December 23, 2021 S-8 POS

As filed with the Securities and Exchange Commission on December 23, 2021

S-8 POS 1 d241508ds8pos.htm S-8 POS As filed with the Securities and Exchange Commission on December 23, 2021 Registration Nos. 333-257026, 333-255897, 333-225996, 333-205187, 333-182862, 333-144197, 333-144196, 333-141508, 333-126576, 333-126571, 333-115639, 333-115638, 333-112514, 333-107778, 333-105059, 333-104533, 333-104532, 333- 96663, 333-74890, 333-62604, 333-61822, 333-55068, 333-31294, 3

December 23, 2021 POS AM

As filed with the Securities and Exchange Commission on December 23, 2021

As filed with the Securities and Exchange Commission on December 23, 2021 Registration Nos.

December 23, 2021 POS AM

As filed with the Securities and Exchange Commission on December 23, 2021

As filed with the Securities and Exchange Commission on December 23, 2021 Registration Nos.

December 23, 2021 POS AM

As filed with the Securities and Exchange Commission on December 23, 2021

As filed with the Securities and Exchange Commission on December 23, 2021 Registration Nos.

December 23, 2021 POS AM

As filed with the Securities and Exchange Commission on December 23, 2021

As filed with the Securities and Exchange Commission on December 23, 2021 Registration Nos.

December 23, 2021 POS AM

As filed with the Securities and Exchange Commission on December 23, 2021

As filed with the Securities and Exchange Commission on December 23, 2021 Registration Nos.

December 23, 2021 S-8 POS

As filed with the Securities and Exchange Commission on December 23, 2021

As filed with the Securities and Exchange Commission on December 23, 2021 Registration Nos.

December 23, 2021 POS AM

As filed with the Securities and Exchange Commission on December 23, 2021

As filed with the Securities and Exchange Commission on December 23, 2021 Registration Nos.

December 23, 2021 S-8 POS

As filed with the Securities and Exchange Commission on December 23, 2021

As filed with the Securities and Exchange Commission on December 23, 2021 Registration Nos.

December 23, 2021 POS AM

As filed with the Securities and Exchange Commission on December 23, 2021

As filed with the Securities and Exchange Commission on December 23, 2021 Registration Nos.

December 23, 2021 POS AM

As filed with the Securities and Exchange Commission on December 23, 2021

As filed with the Securities and Exchange Commission on December 23, 2021 Registration Nos.

December 23, 2021 POS AM

As filed with the Securities and Exchange Commission on December 23, 2021

POS AM 1 d260302dposam.htm POS AM As filed with the Securities and Exchange Commission on December 23, 2021 Registration Nos. 333-238852, 333-133435, 333-130928, 333-128186, 333-127727, 333-124318, 333-120548, 333-118687, 333-112783, 333-108560, 333-109593, 333-107777, 333-107776, 333-107191, 333-105060, 333-101041, 333-100399, 333-100400, 333-100337, 333-83934, 333-89052, 333-36556, and 333-33708

December 23, 2021 8-K

Regulation FD Disclosure, Changes in Control of Registrant, Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year, Termination of a Material Definitive Agreement, Material Modification to Rights of Security Holders, Notice of Delisting or Failure to Satisfy a Continued Listing Rule or Standard; Transfer of Listing, Financial Statements and Exhibits, Completion of Acquisition or Disposition of Assets

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 23, 2021 Zix Corporation (Exact name of registrant as specified in its charter) Texas 0-17995 75-2216818 (State or other jurisdiction of incorporation) (Commission File Numbe

December 23, 2021 POS AM

As filed with the Securities and Exchange Commission on December 23, 2021

As filed with the Securities and Exchange Commission on December 23, 2021 Registration Nos.

December 23, 2021 POS AM

As filed with the Securities and Exchange Commission on December 23, 2021

As filed with the Securities and Exchange Commission on December 23, 2021 Registration Nos.

December 23, 2021 POS AM

As filed with the Securities and Exchange Commission on December 23, 2021

As filed with the Securities and Exchange Commission on December 23, 2021 Registration Nos.

December 23, 2021 S-8 POS

As filed with the Securities and Exchange Commission on December 23, 2021

S-8 POS 1 d241508ds8pos.htm S-8 POS As filed with the Securities and Exchange Commission on December 23, 2021 Registration Nos. 333-257026, 333-255897, 333-225996, 333-205187, 333-182862, 333-144197, 333-144196, 333-141508, 333-126576, 333-126571, 333-115639, 333-115638, 333-112514, 333-107778, 333-105059, 333-104533, 333-104532, 333- 96663, 333-74890, 333-62604, 333-61822, 333-55068, 333-31294, 3

December 23, 2021 S-8 POS

As filed with the Securities and Exchange Commission on December 23, 2021

As filed with the Securities and Exchange Commission on December 23, 2021 Registration Nos.

December 23, 2021 S-8 POS

As filed with the Securities and Exchange Commission on December 23, 2021

As filed with the Securities and Exchange Commission on December 23, 2021 Registration Nos.

December 23, 2021 S-8 POS

As filed with the Securities and Exchange Commission on December 23, 2021

As filed with the Securities and Exchange Commission on December 23, 2021 Registration Nos.

December 23, 2021 POS AM

As filed with the Securities and Exchange Commission on December 23, 2021

POS AM 1 d260302dposam.htm POS AM As filed with the Securities and Exchange Commission on December 23, 2021 Registration Nos. 333-238852, 333-133435, 333-130928, 333-128186, 333-127727, 333-124318, 333-120548, 333-118687, 333-112783, 333-108560, 333-109593, 333-107777, 333-107776, 333-107191, 333-105060, 333-101041, 333-100399, 333-100400, 333-100337, 333-83934, 333-89052, 333-36556, and 333-33708

December 23, 2021 POS AM

As filed with the Securities and Exchange Commission on December 23, 2021

As filed with the Securities and Exchange Commission on December 23, 2021 Registration Nos.

December 23, 2021 S-8 POS

As filed with the Securities and Exchange Commission on December 23, 2021

As filed with the Securities and Exchange Commission on December 23, 2021 Registration Nos.

December 23, 2021 S-8 POS

As filed with the Securities and Exchange Commission on December 23, 2021

As filed with the Securities and Exchange Commission on December 23, 2021 Registration Nos.

December 23, 2021 EX-3.1

Restated Articles of Incorporation of Zix Corporation

Exhibit 3.1 AMENDED AND RESTATED CERTIFICATE OF FORMATION OF ZIX CORPORATION, A FOR-PROFIT CORPORATION This Certificate of Formation is submitted for filing pursuant to the applicable provisions of the Texas Business Organizations Code. ARTICLE I Entity Name and Type The name of the entity is Zix Corporation (the ?Corporation?). The Corporation is a for-profit corporation. ARTICLE II Registered Ag

December 23, 2021 EX-99.1A5N

Press Release issued by Open Text Corporation on December 23, 2021

Exhibit (a)(5)(N) OpenText Buys Zix Corporation Waterloo, ON ? December 23, 2021 - OpenText? (NASDAQ: OTEX), (TSX: OTEX) today announced that it has completed the closing of the previously announced acquisition of Zix Corporation (NASDAQ: ZIXI) (?Zix?), a leader in SaaS-based email encryption, threat protection and compliance cloud solutions for Small and Medium-sized Businesses (SMBs).

December 23, 2021 POS AM

As filed with the Securities and Exchange Commission on December 23, 2021

POS AM 1 d260302dposam.htm POS AM As filed with the Securities and Exchange Commission on December 23, 2021 Registration Nos. 333-238852, 333-133435, 333-130928, 333-128186, 333-127727, 333-124318, 333-120548, 333-118687, 333-112783, 333-108560, 333-109593, 333-107777, 333-107776, 333-107191, 333-105060, 333-101041, 333-100399, 333-100400, 333-100337, 333-83934, 333-89052, 333-36556, and 333-33708

December 23, 2021 POS AM

As filed with the Securities and Exchange Commission on December 23, 2021

As filed with the Securities and Exchange Commission on December 23, 2021 Registration Nos.

December 23, 2021 S-8 POS

As filed with the Securities and Exchange Commission on December 23, 2021

As filed with the Securities and Exchange Commission on December 23, 2021 Registration Nos.

December 23, 2021 S-8 POS

As filed with the Securities and Exchange Commission on December 23, 2021

As filed with the Securities and Exchange Commission on December 23, 2021 Registration Nos.

December 23, 2021 POS AM

As filed with the Securities and Exchange Commission on December 23, 2021

As filed with the Securities and Exchange Commission on December 23, 2021 Registration Nos.

December 23, 2021 POS AM

As filed with the Securities and Exchange Commission on December 23, 2021

As filed with the Securities and Exchange Commission on December 23, 2021 Registration Nos.

December 23, 2021 S-8 POS

As filed with the Securities and Exchange Commission on December 23, 2021

As filed with the Securities and Exchange Commission on December 23, 2021 Registration Nos.

December 23, 2021 S-8 POS

As filed with the Securities and Exchange Commission on December 23, 2021

As filed with the Securities and Exchange Commission on December 23, 2021 Registration Nos.

December 23, 2021 S-8 POS

As filed with the Securities and Exchange Commission on December 23, 2021

As filed with the Securities and Exchange Commission on December 23, 2021 Registration Nos.

December 23, 2021 S-8 POS

As filed with the Securities and Exchange Commission on December 23, 2021

S-8 POS 1 d241508ds8pos.htm S-8 POS As filed with the Securities and Exchange Commission on December 23, 2021 Registration Nos. 333-257026, 333-255897, 333-225996, 333-205187, 333-182862, 333-144197, 333-144196, 333-141508, 333-126576, 333-126571, 333-115639, 333-115638, 333-112514, 333-107778, 333-105059, 333-104533, 333-104532, 333- 96663, 333-74890, 333-62604, 333-61822, 333-55068, 333-31294, 3

December 23, 2021 S-8 POS

As filed with the Securities and Exchange Commission on December 23, 2021

As filed with the Securities and Exchange Commission on December 23, 2021 Registration Nos.

December 23, 2021 SC 14D9/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14D-9 (Rule 14d-101) (Amendment No. 4) Solicitation/Recommendation Statement Under Section 14(d)(4) of the Securities Exchange Act of 1934 Zix Corporation (Name of Subje

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14D-9 (Rule 14d-101) (Amendment No. 4) Solicitation/Recommendation Statement Under Section 14(d)(4) of the Securities Exchange Act of 1934 Zix Corporation (Name of Subject Company) Zix Corporation (Name of Person Filing Statement) Common Stock, $0.01 par value per share (Title of Class of Securities) 98974P100 (CUSIP

December 23, 2021 POS AM

As filed with the Securities and Exchange Commission on December 23, 2021

As filed with the Securities and Exchange Commission on December 23, 2021 Registration Nos.

December 23, 2021 SC TO-T/A

ZIXI / Zix Corporation / OPEN TEXT CORP - SC TO-T/A

SC TO-T/A 1 d249157dsctota.htm SC TO-T/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE TO (RULE 14d-100) Tender Offer Statement Pursuant to Section 14(d)(1) or 13(e)(1) of the Securities Exchange Act of 1934 (Amendment No. 4) Zix Corporation (Name of Subject Company) Zeta Merger Sub Inc. (Offeror) Open Text Corporation (Parent of Offeror) (Names of Filing Persons

December 23, 2021 SC 13D/A

ZIXI / Zix Corporation / True Wind Capital, L.P. - SC 13D/A Activist Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 12)* ZIX CORPORATION (Name of Issuer) Common Stock, $0.01 par value per share (Title of Class of Securities) 98974P100 (CUSIP Number) James H. Greene, Jr. True Wind Capital Management, L.P. Four Embarcadero Center, Suite 2100 San Francisco, CA 94111 (415) 78

December 23, 2021 S-8 POS

As filed with the Securities and Exchange Commission on December 23, 2021

As filed with the Securities and Exchange Commission on December 23, 2021 Registration Nos.

December 23, 2021 POS AM

As filed with the Securities and Exchange Commission on December 23, 2021

As filed with the Securities and Exchange Commission on December 23, 2021 Registration Nos.

December 23, 2021 POS AM

As filed with the Securities and Exchange Commission on December 23, 2021

As filed with the Securities and Exchange Commission on December 23, 2021 Registration Nos.

December 23, 2021 POS AM

As filed with the Securities and Exchange Commission on December 23, 2021

As filed with the Securities and Exchange Commission on December 23, 2021 Registration Nos.

December 23, 2021 S-8 POS

As filed with the Securities and Exchange Commission on December 23, 2021

As filed with the Securities and Exchange Commission on December 23, 2021 Registration Nos.

December 23, 2021 S-8 POS

As filed with the Securities and Exchange Commission on December 23, 2021

S-8 POS 1 d241508ds8pos.htm S-8 POS As filed with the Securities and Exchange Commission on December 23, 2021 Registration Nos. 333-257026, 333-255897, 333-225996, 333-205187, 333-182862, 333-144197, 333-144196, 333-141508, 333-126576, 333-126571, 333-115639, 333-115638, 333-112514, 333-107778, 333-105059, 333-104533, 333-104532, 333- 96663, 333-74890, 333-62604, 333-61822, 333-55068, 333-31294, 3

December 23, 2021 S-8 POS

As filed with the Securities and Exchange Commission on December 23, 2021

S-8 POS 1 d241508ds8pos.htm S-8 POS As filed with the Securities and Exchange Commission on December 23, 2021 Registration Nos. 333-257026, 333-255897, 333-225996, 333-205187, 333-182862, 333-144197, 333-144196, 333-141508, 333-126576, 333-126571, 333-115639, 333-115638, 333-112514, 333-107778, 333-105059, 333-104533, 333-104532, 333- 96663, 333-74890, 333-62604, 333-61822, 333-55068, 333-31294, 3

December 23, 2021 S-8 POS

As filed with the Securities and Exchange Commission on December 23, 2021

As filed with the Securities and Exchange Commission on December 23, 2021 Registration Nos.

December 23, 2021 S-8 POS

As filed with the Securities and Exchange Commission on December 23, 2021

As filed with the Securities and Exchange Commission on December 23, 2021 Registration Nos.

December 23, 2021 S-8 POS

As filed with the Securities and Exchange Commission on December 23, 2021

As filed with the Securities and Exchange Commission on December 23, 2021 Registration Nos.

December 23, 2021 S-8 POS

As filed with the Securities and Exchange Commission on December 23, 2021

As filed with the Securities and Exchange Commission on December 23, 2021 Registration Nos.

December 23, 2021 S-8 POS

As filed with the Securities and Exchange Commission on December 23, 2021

As filed with the Securities and Exchange Commission on December 23, 2021 Registration Nos.

December 23, 2021 S-8 POS

As filed with the Securities and Exchange Commission on December 23, 2021

As filed with the Securities and Exchange Commission on December 23, 2021 Registration Nos.

December 23, 2021 POS AM

As filed with the Securities and Exchange Commission on December 23, 2021

As filed with the Securities and Exchange Commission on December 23, 2021 Registration Nos.

December 23, 2021 S-8 POS

As filed with the Securities and Exchange Commission on December 23, 2021

S-8 POS 1 d241508ds8pos.htm S-8 POS As filed with the Securities and Exchange Commission on December 23, 2021 Registration Nos. 333-257026, 333-255897, 333-225996, 333-205187, 333-182862, 333-144197, 333-144196, 333-141508, 333-126576, 333-126571, 333-115639, 333-115638, 333-112514, 333-107778, 333-105059, 333-104533, 333-104532, 333- 96663, 333-74890, 333-62604, 333-61822, 333-55068, 333-31294, 3

December 23, 2021 S-8 POS

As filed with the Securities and Exchange Commission on December 23, 2021

As filed with the Securities and Exchange Commission on December 23, 2021 Registration Nos.

December 23, 2021 S-8 POS

As filed with the Securities and Exchange Commission on December 23, 2021

As filed with the Securities and Exchange Commission on December 23, 2021 Registration Nos.

December 21, 2021 SC 14D9/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14D-9 (Rule 14d-101) (Amendment No. 3) Solicitation/Recommendation Statement Under Section 14(d)(4) of the Securities Exchange Act of 1934 Zix Corporation (Name of Subje

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14D-9 (Rule 14d-101) (Amendment No. 3) Solicitation/Recommendation Statement Under Section 14(d)(4) of the Securities Exchange Act of 1934 Zix Corporation (Name of Subject Company) Zix Corporation (Name of Person Filing Statement) Common Stock, $0.01 par value per share (Title of Class of Securities) 98974P100 (CUSIP

December 21, 2021 EX-99.1A5M

Press Release issued by Open Text Corporation on December 21, 2021*

Exhibit (a)(5)(M) PRESS RELEASE OpenText Extends Tender Offer for Zix Corporation WATERLOO, ON ? December 21, 2021 ? In connection with the previously announced agreement to acquire Zix Corporation (NASDAQ: ZIXI) (?Zix?), OpenText? (NASDAQ: OTEX) (TSX: OTEX) announced today that it has extended the expiration of its tender offer for all outstanding shares of common stock of Zix at a price of U.

December 21, 2021 SC TO-T/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE TO (RULE 14d-100) Tender Offer Statement Pursuant to Section 14(d)(1) or 13(e)(1) of the Securities Exchange Act of 1934 (Amendment No. 3) Zix Corporation (Name of Subje

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE TO (RULE 14d-100) Tender Offer Statement Pursuant to Section 14(d)(1) or 13(e)(1) of the Securities Exchange Act of 1934 (Amendment No. 3) Zix Corporation (Name of Subject Company) Zeta Merger Sub Inc. (Offeror) Open Text Corporation (Parent of Offeror) (Names of Filing Persons) COMMON STOCK, PAR VALUE $0.01 PER SHARE

December 21, 2021 EX-99.1D8

First Amendment to the Tender and Voting Agreement, dated December 18, 2021, by and among Open Text Corporation, Zeta Merger Sub, Inc. and certain stockholders of Zix Corporation*

Exhibit (d)(8) Execution Version FIRST AMENDMENT TO THE TENDER AND VOTING AGREEMENT This FIRST AMENDMENT TO THE TENDER AND VOTING AGREEMENT (this ?Amendment?), is made and entered into as of December 18, 2021, by and among Open Text Corporation, a corporation incorporated under the federal laws of Canada (?Parent?), Zeta Merger Sub Inc.

December 15, 2021 SC 14D9/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14D-9 (Rule 14d-101) (Amendment No. 2) Solicitation/Recommendation Statement Under Section 14(d)(4) of the Securities Exchange Act of 1934 Zix Corporation (Name of Subje

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14D-9 (Rule 14d-101) (Amendment No. 2) Solicitation/Recommendation Statement Under Section 14(d)(4) of the Securities Exchange Act of 1934 Zix Corporation (Name of Subject Company) Zix Corporation (Name of Person Filing Statement) Common Stock, $0.01 par value per share (Title of Class of Securities) 98974P100 (CUSIP

December 14, 2021 SC TO-T/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE TO (RULE 14d-100) Tender Offer Statement Pursuant to Section 14(d)(1) or 13(e)(1) of the Securities Exchange Act of 1934 (Amendment No. 2) Zix Corporation (Name of Subje

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE TO (RULE 14d-100) Tender Offer Statement Pursuant to Section 14(d)(1) or 13(e)(1) of the Securities Exchange Act of 1934 (Amendment No. 2) Zix Corporation (Name of Subject Company) Zeta Merger Sub Inc. (Offeror) Open Text Corporation (Parent of Offeror) (Names of Filing Persons) COMMON STOCK, PAR VALUE $0.01 PER SHARE

December 8, 2021 SC 14D9/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14D-9 (Rule 14d-101) (Amendment No. 1) Solicitation/Recommendation Statement Under Section 14(d)(4) of the Securities Exchange Act of 1934 Zix Corporation (Name of Subje

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14D-9 (Rule 14d-101) (Amendment No. 1) Solicitation/Recommendation Statement Under Section 14(d)(4) of the Securities Exchange Act of 1934 Zix Corporation (Name of Subject Company) Zix Corporation (Name of Person Filing Statement) Common Stock, par value $0.01 per share (Title of Class of Securities) 98974P100 (CUSIP

December 8, 2021 SC TO-T/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE TO (RULE 14d-100) Tender Offer Statement Pursuant to Section 14(d)(1) or 13(e)(1) of the Securities Exchange Act of 1934 (Amendment No. 1) Zix Corporation (Name of Subje

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE TO (RULE 14d-100) Tender Offer Statement Pursuant to Section 14(d)(1) or 13(e)(1) of the Securities Exchange Act of 1934 (Amendment No. 1) Zix Corporation (Name of Subject Company) Zeta Merger Sub Inc. (Offeror) Open Text Corporation (Parent of Offeror) (Names of Filing Persons) COMMON STOCK, PAR VALUE $0.01 PER SHARE

December 3, 2021 SC 13G

ZIXI / Zix Corporation / SPRING CREEK CAPITAL LLC - SC 13G Passive Investment

SC 13G UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. )* Zix Corporation (Name of Issuer) Common Stock, par value $0.01 per share (Title of Class of Securities) 98974P100 (CUSIP Number) November 23, 2021 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the ru

December 3, 2021 EX-99.1

JOINT FILING AGREEMENT

EXHIBIT 99.1 JOINT FILING AGREEMENT This will confirm the agreement by and among the undersigned that the Schedule 13G filed with the Securities and Exchange Commission on or about the date hereof with respect to the beneficial ownership by the undersigned of the shares of Common Stock, par value $0.01 per share, of Zix Corporation (this ?Agreement?), is being filed, and all amendments thereto wil

November 29, 2021 SC 13D/A

ZIXI / Zix Corporation / OPEN TEXT CORP - SC 13D/A Activist Investment

SC 13D/A 1 d196842dsc13da.htm SC 13D/A SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 1)* INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO § 240.13d-1(a) AND AMENDMENTS THERETO FILED PURSUANT TO 240.13d-2(a) UNDER THE SECURITIES EXCHANGE ACT OF 1934 Zix Corporation (Name of Issuer) Common Stock, par value $0

November 23, 2021 SC 14D9

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14D-9 (Rule 14d-101) Solicitation/Recommendation Statement Under Section 14(d)(4) of the Securities Exchange Act of 1934 Zix Corporation (Name of Subject Company) Zix Co

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14D-9 (Rule 14d-101) Solicitation/Recommendation Statement Under Section 14(d)(4) of the Securities Exchange Act of 1934 Zix Corporation (Name of Subject Company) Zix Corporation (Name of Person Filing Statement) Common Stock, par value $0.01 per share (Title of Class of Securities) 98974P100 (CUSIP

November 22, 2021 EX-99.1AA

SCHEDULE A INFORMATION CONCERNING MEMBERS OF THE BOARDS OF DIRECTORS AND THE EXECUTIVE OFFICERS OF OPENTEXT AND PURCHASER

SCHEDULE A INFORMATION CONCERNING MEMBERS OF THE BOARDS OF DIRECTORS AND THE EXECUTIVE OFFICERS OF OPENTEXT AND PURCHASER OPENTEXT The following table sets forth information about OpenText?s directors and executive officers as of November 22, 2021.

November 22, 2021 EX-99.1D

Form of Letter to Brokers, Dealers, Commercial Banks, Trust Companies and Other Nominees*

Exhibit (a)(1)(D) Offer To Purchase For Cash All Outstanding Shares of Common Stock of ZIX CORPORATION a Texas corporation at $8.

November 22, 2021 EX-99.1ATX

THE TENDER OFFER

INTRODUCTION To All Holders of Shares of Common Stock of Zix Corporation: Zeta Merger Sub Inc.

November 22, 2021 EX-99.1C

Form of Notice of Guaranteed Delivery*

Exhibit (a)(1)(C) NOTICE OF GUARANTEED DELIVERY For Tender of Shares of Common Stock of ZIX CORPORATION a Texas corporation at $8.

November 22, 2021 EX-99.1B

Form of Letter of Transmittal*

Exhibit (a)(1)(B) LETTER OF TRANSMITTAL To Tender Shares of Common Stock of ZIX CORPORATION a Texas corporation at $8.

November 22, 2021 EX-99.1E

Form of Letter to Clients for Use by Brokers, Dealers, Commercial Banks, Trust Companies and Other Nominees*

Exhibit (a)(1)(E) Offer To Purchase For Cash All Outstanding Shares of Common Stock of ZIX CORPORATION a Texas corporation at $8.

November 22, 2021 EX-99.1ACV

Offer to Purchase dated November 22, 2021 (incorporated by reference to Exhibit (a)(1)(A) to the Schedule TO filed by Open Text Corporation on November 22, 2021)

Exhibit (a)(1)(A) Offer to Purchase for Cash All Outstanding Shares of Common Stock of Zix Corporation at $8.

November 22, 2021 SC TO-T

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE TO (RULE 14d-100) Tender Offer Statement Pursuant to Section 14(d)(1) or 13(e)(1) of the Securities Exchange Act of 1934 Zix Corporation (Name of Subject Company) Zeta M

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE TO (RULE 14d-100) Tender Offer Statement Pursuant to Section 14(d)(1) or 13(e)(1) of the Securities Exchange Act of 1934 Zix Corporation (Name of Subject Company) Zeta Merger Sub Inc. (Offeror) Open Text Corporation (Parent of Offeror) (Names of Filing Persons) COMMON STOCK, PAR VALUE $0.01 PER SHARE (Title of Class o

November 22, 2021 EX-99.5B

Press Release issued by Open Text Corporation on November 22, 2021*

Exhibit (a)(5)(B) PRESS RELEASE OpenText Commences Tender Offer for Zix Corporation WATERLOO, ON ? November 22, 2021 ? OpenText? (NASDAQ: OTEX) (TSX: OTEX) announced today that it has commenced its previously announced tender offer for all outstanding shares of common stock of Zix Corporation (NASDAQ: ZIXI) at a price of U.

November 22, 2021 EX-99.1ARM

SUMMARY TERM SHEET

SUMMARY TERM SHEET The information contained in this summary term sheet is a summary only and is not meant to be a substitute for the more detailed description and information contained in this Offer to Purchase, the Letter of Transmittal and other related materials.

November 22, 2021 EX-99.5C

Form of summary advertisement, published in The New York Times on November 22, 2021*

Exhibit (a)(5)(C) This announcement is neither an offer to purchase nor a solicitation of an offer to sell Shares (as defined below), and the provisions herein are subject in their entirety to the provisions of the Offer (as defined below).

November 22, 2021 EX-99.1ATC

TABLE OF CONTENTS Page SUMMARY TERM SHEET i INTRODUCTION 1 THE TENDER OFFER 5 1. Terms of the Offer 5 2. Acceptance for Payment and Payment for Shares 7 3. Procedures for Tendering Shares 8 4. Withdrawal Rights 11 5. Certain United States Federal Inc

TABLE OF CONTENTS Page SUMMARY TERM SHEET i INTRODUCTION 1 THE TENDER OFFER 5 1. Terms of the Offer 5 2. Acceptance for Payment and Payment for Shares 7 3. Procedures for Tendering Shares 8 4. Withdrawal Rights 11 5. Certain United States Federal Income Tax Consequences of the Offer and the Merger 10 6. Price Range of Shares; Dividends 13 7. Certain Effects of the Offer and the Merger 14 8. Certai

November 17, 2021 EX-99.3

TENDER AND VOTING AGREEMENT

Exhibit 3 Execution Version TENDER AND VOTING AGREEMENT THIS TENDER AND VOTING AGREEMENT (this ?Agreement?), dated as of November 7, 2021, is made by and among Open Text Corporation, a Canadian corporation (?Parent?), on the one hand, and each stockholder listed on Annex I (each, a ?Stockholder? and collectively, the ?Stockholders?) on the other, each an owner of shares (the ?Shares?) of common stock, par value $0.

November 17, 2021 EX-99.7

Zix Corporation 2711 North Haskell Avenue, Suite 2300 Dallas, Texas 75204

Exhibit 7 Zix Corporation 2711 North Haskell Avenue, Suite 2300 Dallas, Texas 75204 STRICTLY CONFIDENTIAL August 12, 2021 Open Text Corporation 275 Frank Tompa Drive Waterloo, ON N2L 0A1 Attention: Gordon Davies, EVP, CLO & Corporate Development Ladies and Gentlemen: 1.

November 17, 2021 EX-99.6

JOINDER AGREEMENT

Exhibit 6 Execution Version JOINDER AGREEMENT This Joinder Agreement (this ?Joinder?) is made and entered into as of November 8, 2021, by and among Open Text Corporation, a Canadian corporation (?Parent?), Zeta Merger Sub Inc.

November 17, 2021 EX-99.5

TENDER AND VOTING AGREEMENT

Exhibit 5 Execution Version TENDER AND VOTING AGREEMENT THIS TENDER AND VOTING AGREEMENT (this ?Agreement?), dated as of November 7, 2021, is made by and among Open Text Corporation, a Canadian corporation (?Parent?), Zix Corporation, a Texas corporation (the ?Company?), and Zephyr Holdco, LLC, a Delaware limited liability company (the ?Stockholder?), an owner of shares of Series A Convertible Preferred Stock, par value $1.

November 17, 2021 EX-99.4

JOINDER AGREEMENT

Exhibit 4 Execution Version JOINDER AGREEMENT This Joinder Agreement (this ?Joinder?) is made and entered into as of November 8, 2021, by and among Open Text Corporation, a Canadian corporation (?Parent?), Zeta Merger Sub Inc.

November 17, 2021 EX-99.2

JOINDER AGREEMENT

Exhibit 2 Execution Version JOINDER AGREEMENT This Joinder Agreement (this ?Joinder?) is made and entered into as of November 8, 2021, by and among Open Text Corporation, a Canadian corporation (?Parent?), Zix Corporation, a Texas corporation (the ?Company?) and Zeta Merger Sub Inc.

November 17, 2021 SC 13D

ZIXI / Zix Corporation / OPEN TEXT CORP - SC 13D Activist Investment

SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. )* INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO ? 240.13d-1(a) AND AMENDMENTS THERETO FILED PURSUANT TO 240.13d-2(a) UNDER THE SECURITIES EXCHANGE ACT OF 1934 Zix Corporation (Name of Issuer) Common Stock, par value $0.01 per share (Title of Class of Securit

November 9, 2021 EX-99.8

Message to the analyst community, dated November 8, 2021 (incorporated herein by reference to Exhibit 99.8 to the Schedule TO-C filed by Open Text Corporation with the Securities and Exchange Commission on November 9, 2021)*

EX-99.8 9 d244627dex998.htm EX-99.8 Exhibit 99.8 The following was any email sent by Larry Yokel, who is a Senior Analyst Relations Manager at OpenText, on November 8, 2021 to various analysts. Subject: OpenText to acquire Zix Corporation Dear Analyst Community: Waterloo, ON – November 8, 2021 - OpenText announced this morning that it has entered into a definitive agreement to acquire Zix Corporat

November 9, 2021 EX-99.2

Tweet from Zix, dated November 8, 2021 (incorporated herein by reference to Exhibit 99.2 to the Schedule 14D-9C filed by Zix with the SEC on November 9, 2021).

EXHIBIT 99.2 Zix Tweet (@ZixCorp), November 8, 2021 Zix has entered a definitive agreement to be acquired by OpenText! Together we will enhance our services and grow even stronger! PR here: bit.ly/3BPVsCp. THE PRESS RELEASE CONTAINS IMPORTANT INFORMATION FOR ZIX STOCKHOLDERS & INVESTORS AS REQUIRED BY SEC REGULATIONS.

November 9, 2021 EX-99.F

AGREEMENT AND PLAN OF MERGER by and among OPEN TEXT CORPORATION ZIX CORPORATION Dated November 7, 2021

EX-99.F 2 d230438dex99f.htm EX-99.F Exhibit F Execution Version AGREEMENT AND PLAN OF MERGER by and among OPEN TEXT CORPORATION and ZIX CORPORATION Dated November 7, 2021 TABLE OF CONTENTS Page ARTICLE I DEFINITIONS & INTERPRETATIONS 2 1.1 Certain Definitions 2 1.2 Additional Definitions 17 1.3 Certain Interpretations 19 1.4 Company Disclosure Letter 22 ARTICLE II THE TRANSACTIONS 22 2.1 The Offer

November 9, 2021 EX-99.8

AppRiver email to partners, first used November 8, 2021 (incorporated herein by reference to Exhibit 99.8 to the Schedule 14D-9C filed by Zix with the SEC on November 9, 2021).

EXHIBIT 99.8 Zix | AppRiver Enters Definitive Agreement to be Acquired by OpenText We are excited to announce that Zix | AppRiver has entered a definitive agreement to be acquired by OpenText. We are confident this transaction aligns with our mission to make cyber security and resiliency simple and reliable, and supports our growth strategy moving forward. Together, we have the resources to innova

November 9, 2021 EX-99.6

Zix email to partners, first used November 8, 2021 (incorporated herein by reference to Exhibit 99.6 to the Schedule 14D-9C filed by Zix with the SEC on November 9, 2021).

EX-99.6 7 d244899dex996.htm EX-99.6 EXHIBIT 99.6 Zix Enters Definitive Agreement to be Acquired by OpenText We are excited to announce that Zix has entered a definitive agreement to be acquired by OpenText. We are confident this transaction aligns with our mission to make cyber security and resiliency simple and reliable, and supports our growth strategy moving forward. Together, we have the resou

November 9, 2021 EX-99.2

Zix to be Acquired by OpenText™ for $8.50 Per Share in Cash Announcement Provides Liquidity and Value Certainty for Zix Stockholders, Follows Extensive Process

EX-99.2 5 d253566dex992.htm EX-99.2 Exhibit 99.2 Press Release | For Distribution Zix to be Acquired by OpenText™ for $8.50 Per Share in Cash Announcement Provides Liquidity and Value Certainty for Zix Stockholders, Follows Extensive Process DALLAS, Texas – Nov. 8, 2021 – Zix Corporation (NASDAQ: ZIXI) (“Zix”), a leading provider of cloud email security, threat protection and compliance cloud solu

November 9, 2021 EX-99.10

Zix Customer FAQs, issued November 8, 2021 (incorporated herein by reference to Exhibit 99.10 to the Schedule 14D-9C filed by Zix with the SEC on November 9, 2021).

EX-99.10 11 d244899dex9910.htm EX-99.10 Exhibit 99.10 Zix Enters Definitive Agreement to be Acquired by OpenText | Customer FAQ November 8, 2021 1. Who is OpenText? OpenText is a leader in Information Management with a strong roster of services and customer channels. We are confident Zix/AppRiver is well positioned to continue to grow and succeed under OpenText’s ownership. OpenText also has a str

November 9, 2021 EX-99.1

Zix Reports Third Quarter 2021 Financial Results

Exhibit 99.1 Press Release | For Distribution Zix Reports Third Quarter 2021 Financial Results ? Record Net Dollar Retention of 103.1% Driven by Strong Customer Adoption of CloudAlly and Secure Cloud ? 18% Increase in Revenue and Annual Recurring Revenue (ARR) ? Generated $10.1 Million in Cash Flow from Operations, $35.5 Million Year-to-date, up 46.7% ? Cash Position Increased $5.1 Million or 15.0

November 9, 2021 EX-99.3

Presentation made available by Open Text Corporation on its website to investors on November 8, 2021 (incorporated herein by reference to Exhibit 99.3 to the Schedule TO-C filed by Open Text Corporation with the Securities and Exchange Commission on November 9, 2021)*

Exhibit 99.3 OpenText to Acquire Zix Corporation (NASDAQ: ZIXI) NASDAQ: OTEX | TSX: OTEX November 8, 2021 Cautionary Statement Certain statements in this presentation, including statements regarding OpenText?s plans, objectives, expectations and intentions relating to the acquisition, the acquisition?s expected contribution to OpenText?s results, financing and closing of the acquisition, as well a

November 9, 2021 EX-99.3

LinkedIn post from Zix, dated November 8, 2021 (incorporated herein by reference to Exhibit 99.3 to the Schedule 14D-9C filed by Zix with the SEC on November 9, 2021).

EX-99.3 4 d244899dex993.htm EX-99.3 EXHIBIT 99.3 Zix LinkedIn Post, November 8, 2021 We are excited to share the news that Zix has entered a definitive agreement to be acquired by OpenText. OpenText is a leader in Information Management, helping companies securely capture, govern and exchange information on a global scale. They are based in Waterloo, Canada and have 35 locations worldwide and more

November 9, 2021 EX-99.4

Message to Zix employees on November 8, 2021, by Mark J. Barrenechea, CEO & CTO of Open Text Corporation (incorporated herein by reference to Exhibit 99.4 to the Schedule TO-C filed by Open Text Corporation with the Securities and Exchange Commission on November 9, 2021)*

Exhibit 99.4 Subject: OpenText and Zix Dear Future Colleagues, I am excited that OpenText has entered into a definitive agreement to acquire Zix, and I look forward to welcoming you to the OpenText team in the near future. Throughout this process, our team has been consistently impressed by both the technology and the quality of the team that you have built. Zix is a truly impressive company, and

November 9, 2021 EX-2.1

Agreement and Plan of Merger, dated as of November 7, 2021, by and among Open Text Corporation and Zix Corporation (incorporated by reference to Exhibit 2.1 to the Current Report on Form 8-K filed by Zix Corporation on November 8, 2021)

EX-2.1 2 d253566dex21.htm EX-2.1 Exhibit 2.1 AGREEMENT AND PLAN OF MERGER by and among OPEN TEXT CORPORATION and ZIX CORPORATION Dated November 7, 2021 TABLE OF CONTENTS Page ARTICLE I DEFINITIONS & INTERPRETATIONS 2 1.1 Certain Definitions 2 1.2 Additional Definitions 18 1.3 Certain Interpretations 19 1.4 Company Disclosure Letter 22 ARTICLE II THE TRANSACTIONS 22 2.1 The Offer 22 2.2 Additional

November 9, 2021 EX-99.11

Zix Partner FAQs, issued November 8, 2021 (incorporated herein by reference to Exhibit 99.11 to the Schedule 14D-9C filed by Zix with the SEC on November 9, 2021).

EX-99.11 12 d244899dex9911.htm EX-99.11 Exhibit 99.11 Zix Enters Definitive Agreement to be Acquired by OpenText | Partner FAQ November 8, 2021 1. Who is OpenText? OpenText is a leader in Information Management with a strong roster of services and customer channels. We are confident Zix/AppRiver is well positioned to continue to grow and succeed under OpenText’s ownership. OpenText also has a stro

November 9, 2021 8-K

Entry into a Material Definitive Agreement, Material Modification to Rights of Security Holders, Financial Statements and Exhibits, Results of Operations and Financial Condition, 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): November 7, 2021 ZIX CORPORATION (Exact name of registrant as specified in its charter) Texas 0-17995 75-2216818 (State or other jurisdiction of incorporation) (Commission File Number

November 9, 2021 EX-99.2

Transcript of Open Text Corporation investor call on November 8, 2021 (incorporated herein by reference to Exhibit 99.2 to the Schedule TO-C filed by Open Text Corporation with the Securities and Exchange Commission on November 9, 2021)*

EX-99.2 3 d244627dex992.htm EX-99.2 Exhibit 99.2 S&P Global Market Intelligence Open Text Corporation NasdaqGS:OTEX M&A Call Monday, November 08, 2021 2:00 PM GMT COPYRIGHT © 2021 S&P Global Market Intelligence, a division of S&P Global Inc. All rights reserved spglobal.com/marketintelligence 1 Contents Table of Contents Call Participants 3 Presentation 4 Question and Answer 7 Copyright © 2021 S&P

November 9, 2021 EX-99.5

Tweet posted by Open Text Corporation, dated November 8, 2021 (incorporated herein by reference to Exhibit 99.5 to the Schedule TO-C filed by Open Text Corporation with the Securities and Exchange Commission on November 9, 2021)*

EX-99.5 6 d244627dex995.htm EX-99.5 Exhibit 99.5 The following was posted by OpenText on Twitter at https://twitter.com/OpenText/status/1457704210481524742?s=20 on November 8, 2021.

November 9, 2021 SC TO-C

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE TO (RULE 14d-100) Tender Offer Statement Pursuant to Section 14(d)(1) or 13(e)(1) of the Securities Exchange Act of 1934 Zix Corporation (Name of Subject Company) Zeta M

SC TO-C 1 d244627dsctoc.htm SC TO-C UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE TO (RULE 14d-100) Tender Offer Statement Pursuant to Section 14(d)(1) or 13(e)(1) of the Securities Exchange Act of 1934 Zix Corporation (Name of Subject Company) Zeta Merger Sub Inc. (Offeror) Open Text Corporation (Parent of Offeror) (Names of Filing Persons) COMMON STOCK, PAR VAL

November 9, 2021 EX-99.G

TENDER AND VOTING AGREEMENT

EX-99.G 3 d230438dex99g.htm EX-99.G Exhibit G Execution Version TENDER AND VOTING AGREEMENT THIS TENDER AND VOTING AGREEMENT (this “Agreement”), dated as of November 7, 2021, is made by and among Open Text Corporation, a Canadian corporation (“Parent”), Zix Corporation, a Texas corporation (the “Company”), and Zephyr Holdco, LLC, a Delaware limited liability company (the “Stockholder”), an owner o

November 9, 2021 EX-99.9

AppRiver email to customers, first used November 8, 2021 (incorporated herein by reference to Exhibit 99.9 to the Schedule 14D-9C filed by Zix with the SEC on November 9, 2021).

EX-99.9 10 d244899dex999.htm EX-99.9 EXHIBIT 99.9 Zix | AppRiver Enters Definitive Agreement to be Acquired by OpenText We are excited to announce that Zix | AppRiver has entered a definitive agreement to be acquired by OpenText. We are confident this transaction aligns with our mission to make cyber security and resiliency simple and reliable, and supports our growth strategy moving forward. Toge

November 9, 2021 EX-99.1

Zix Press Release, dated November 8, 2021 (incorporated herein by reference to Exhibit 99.1 to the Schedule 14D-9C filed by Zix with the SEC on November 9, 2021).

Exhibit 99.1 Press Release | For Distribution Zix to be Acquired by OpenText? for $8.50 Per Share in Cash Announcement Provides Liquidity and Value Certainty for Zix Stockholders, Follows Extensive Process DALLAS, Texas ? Nov. 8, 2021 ? Zix Corporation (NASDAQ: ZIXI) (?Zix?), a leading provider of cloud email security, threat protection and compliance cloud solutions for Small and Medium-sized Bus

November 9, 2021 EX-99.1

Exhibit 99.1

EX-99.1 2 d244627dex991.htm EX-99.1 Exhibit 99.1 OpenText to Acquire Zix Corporation Strengthens SMB Platform with Cloud-based Email Security & Compliance Solutions, Brings 5,600 Managed Service Partners, Extends Microsoft Relationship Waterloo, ON – November 8, 2021 - OpenText™ (NASDAQ: OTEX), (TSX: OTEX) today announced that it has entered into a definitive agreement to acquire Zix Corporation,

November 9, 2021 EX-99.9

Message to certain distributors and contacts of Open Text, dated November 8, 2021 (incorporated herein by reference to Exhibit 99.9 to the Schedule TO-C filed by Open Text Corporation with the Securities and Exchange Commission on November 9, 2021)*

Exhibit 99.9 The following was an email sent by Jody Guffey, who is an VP, Sales at OpenText, on November 8, 2021 to certain distributors and contacts of OpenText. Subject: OpenText to Acquire Zix Corporation, Inc. Dear [contact first name], Today we announced our intention to acquire Zix, a leader in SaaS-based email encryption, threat protection and compliance cloud solutions for Small and Mediu

November 9, 2021 EX-99.6

LinkedIn post made by Open Text Corporation, dated November 8, 2021 (incorporated herein by reference to Exhibit 99.6 to the Schedule TO-C filed by Open Text Corporation with the Securities and Exchange Commission on November 9, 2021)*

EX-99.6 7 d244627dex996.htm EX-99.6 Exhibit 99.6 The following was posted by OpenText on LinkedIn at https://www.linkedin.com/posts/opentextopentext-has-entered-into-a-definitive-agreement-activity-6863469901055582209-TuAz on November 8, 2021.

November 9, 2021 EX-99.5

Email from OpenText’s CEO to Zix employees, sent on November 8, 2021 (incorporated herein by reference to Exhibit 99.5 to the Schedule 14D-9C filed by Zix with the SEC on November 9, 2021).

EXHIBIT 99.5 Subject: OpenText and Zix Dear Future Colleagues, I am excited that OpenText has entered into a definitive agreement to acquire Zix, and I look forward to welcoming you to the OpenText team in the near future. Throughout this process, our team has been consistently impressed by both the technology and the quality of the team that you have built. Zix is a truly impressive company, and

November 9, 2021 EX-99.10

Post on ChannelFutures.com, which includes quotes from an executive of Open Text Corporation, dated November 8, 2021 (incorporated herein by reference to Exhibit 99.10 to the Schedule TO-C filed by Open Text Corporation with the Securities and Exchange Commission on November 9, 2021)*

EX-99.10 11 d244627dex9910.htm EX-99.10 Exhibit 99.10 The following was a post on ChannelFutures.com, in which Prentiss Donohue, the executive vice president of SMB and consumer sales at OpenText, was quoted, and is available at https://www.channelfutures.com/mergers-and-acquisitions/opentext-to-roll-out-smb-cybersecurity-platform-with-860-million-zix-acquisition . OpenText to Roll Out SMB Cyberse

November 9, 2021 10-Q

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

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2021 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 0-17995 ZIX CORPOR

November 9, 2021 EX-10.1

Tender and Voting Agreement, dated November 7, 2021, by and among Zix Corporation, Open Text Corporation and Zephyr Holdco, LLC

Exhibit 10.1 TENDER AND VOTING AGREEMENT THIS TENDER AND VOTING AGREEMENT (this “Agreement”), dated as of November 7, 2021, is made by and among Open Text Corporation, a Canadian corporation (“Parent”), Zix Corporation, a Texas corporation (the “Company”), and Zephyr Holdco, LLC, a Delaware limited liability company (the “Stockholder”), an owner of shares of Series A Convertible Preferred Stock, p

November 9, 2021 SC 13D/A

ZIXI / Zix Corporation / True Wind Capital, L.P. - SC 13D/A Activist Investment

SC 13D/A 1 d230438dsc13da.htm SC 13D/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 11)* ZIX CORPORATION (Name of Issuer) Common Stock, $0.01 par value per share (Title of Class of Securities) 98974P100 (CUSIP Number) James H. Greene, Jr. True Wind Capital Management, L.P. Four Embarcadero Center, Suit

November 9, 2021 SC14D9C

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14D-9 (Rule 14d-101) Solicitation/Recommendation Statement Under Section 14(d)(4) of the Securities Exchange Act of 1934 ZIX CORPORATION (Name of Subject Company) ZIX CO

SC14D9C 1 d244899dsc14d9c.htm SC14D9C UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14D-9 (Rule 14d-101) Solicitation/Recommendation Statement Under Section 14(d)(4) of the Securities Exchange Act of 1934 ZIX CORPORATION (Name of Subject Company) ZIX CORPORATION (Name of Persons Filing Statement) Common Stock, par value $0.01 per share (Title of Class of Securiti

November 9, 2021 EX-99.7

Zix email to customers, first used November 8, 2021 (incorporated herein by reference to Exhibit 99.7 to the Schedule 14D-9C filed by Zix with the SEC on November 9, 2021).

EXHIBIT 99.7 Zix Enters Definitive Agreement to be Acquired by OpenText We are excited to announce that Zix has entered a definitive agreement to be acquired by OpenText. We are confident this transaction aligns with our mission to make cyber security and resiliency simple and reliable, and supports our growth strategy moving forward. Together, we have the resources to innovate and scale, which wi

November 9, 2021 EX-99.7

Community.webroot.com post made on November 8, 2021 (incorporated herein by reference to Exhibit 99.7 to the Schedule TO-C filed by Open Text Corporation with the Securities and Exchange Commission on November 9, 2021)*

Exhibit 99.7 The following was posted by Tyler Moffitt, who is a Sr. Security Analyst & Community Manager at OpenText, on community.webroot.com at https://community.webroot.com/news-announcements-3/opentext-acquires-zix-corporation-349132 on November 8, 2021.

November 9, 2021 EX-99.4

Email from Zix’s CEO to Zix employees, sent on November 8, 2021 (incorporated herein by reference to Exhibit 99.4 to the Schedule 14D-9C filed by Zix with the SEC on November 9, 2021).

EXHIBIT 99.4 Team, I’m excited to share that this morning Zix entered into a definitive agreement to be acquired by OpenText. I want to take a moment to provide some background and context on this news, as well as what to expect in the days ahead. Over the last five years through our collective efforts, we have grown and evolved every aspect of the Company to create an outstanding Cybersecurity, R

September 20, 2021 SC 13D/A

ZIXI / Zix Corporation / True Wind Capital, L.P. - SC 13D/A Activist Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 10)* ZIX CORPORATION (Name of Issuer) Common Stock, $0.01 par value per share (Title of Class of Securities) 98974P100 (CUSIP Number) James H. Greene, Jr. True Wind Capital Management, L.P. Four Embarcadero Center, Suite 2100 San Francisco, CA 94111 (415) 78

August 5, 2021 10-Q

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

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2021 ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 0-17995 ZIX CORPORATION

August 5, 2021 EX-99.1

Zix Reports Second Quarter 2021 Financial Results

Exhibit 99.1 Press Release | For Distribution Zix Reports Second Quarter 2021 Financial Results ? Strong Adoption of Secure Cloud Platform Drives 18% Increase in Revenue and 17% Increase in Annual recurring revenue (ARR) ? Generated $14.7 Million in Cash Flow from Operations, an increase of 212% Compared to Q2 2020 ? Cash Position Increased $10.2 Million or 43% to $33.9 Million Compared to Q1 2021

August 5, 2021 8-K

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): August 5, 2021 ZIX CORPORATION (Exact name of registrant as specified in its charter) Texas 0-17995 75-2216818 (State or other jurisdiction of incorporation) (Commission File Number)

August 5, 2021 EX-4.1

Zix Corporation 2021 Omnibus Incentive Plan.

EX-4.1 2 zixi-ex41207.htm EX-4.1 Exhibit 4.1 ZIX CORPORATION 2021 OMNIBUS INCENTIVE PLAN 1.Plan. Zix Corporation (the “Company”) established this Zix Corporation 2021 Omnibus Incentive Plan (this “Plan”) to be effective on June 9, 2021 (the “Effective Date”); provided that this Plan has received the requisite shareholder approval described in Section 23 below. This Plan is intended to promote the

June 21, 2021 SC 13D/A

ZIXI / Zix Corporation / True Wind Capital, L.P. - SC 13D/A Activist Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 9)* ZIX CORPORATION (Name of Issuer) Common Stock, $0.01 par value per share (Title of Class of Securities) 98974P100 (CUSIP Number) James H. Greene, Jr. True Wind Capital Management, L.P. Four Embarcadero Center, Suite 2100 San Francisco, CA 94111 (415) 780

June 11, 2021 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): June 9, 2021 ZIX CORPORATION (Exact name of registrant as specified in its charter) Texas 0-17995 75-2216818 (State or other jurisdiction of incorporation) (Commission File Number) (I

June 11, 2021 S-8

As filed with the Securities and Exchange Commission on June 11, 2021

As filed with the Securities and Exchange Commission on June 11, 2021 Registration No.

June 4, 2021 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): June 1, 2021 ZIX CORPORATION (Exact name of registrant as specified in its charter) Texas 0-17995 75-2216818 (State or other jurisdiction of incorporation) (Commission File Number) (I

May 7, 2021 S-8

- S-8

As filed with the Securities and Exchange Commission on May 7, 2021 Registration No.

May 6, 2021 10-Q

Quarterly Report - 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2021 ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 0-17995 ZIX CORPORATIO

May 5, 2021 8-K

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): May 5, 2021 ZIX CORPORATION (Exact name of registrant as specified in its charter) Texas 0-17995 75-2216818 (State or other jurisdiction of incorporation) (Commission File Number) (IR

May 5, 2021 EX-99.1

Zix Reports First Quarter 2021 Financial Results Continued Strong Adoption of Secure Cloud Platform Drives 14% Increase in Revenue and ARR, 20% Growth in Cloud ARR and $10.7 million in Cash Flow from Operations

EX-99.1 2 d234523dex991.htm EX-99.1 Exhibit 99.1 Press Release | For Distribution Zix Reports First Quarter 2021 Financial Results Continued Strong Adoption of Secure Cloud Platform Drives 14% Increase in Revenue and ARR, 20% Growth in Cloud ARR and $10.7 million in Cash Flow from Operations DALLAS — May 5, 2021 — Zix Corporation (Zix) (NASDAQ: ZIXI), a leading provider of cloud email security, pr

April 23, 2021 DEFA14A

- DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A 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(e)(2)) ? Defin

April 23, 2021 DEF 14A

definitive proxy statement on Schedule 14A

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A 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 14

March 17, 2021 SC 13D/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 8)* ZIX CORPORATION (Name of Issuer) Common Stock, $0.01 par value per share (Title of Class of Securities)

SC 13D/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 8)* ZIX CORPORATION (Name of Issuer) Common Stock, $0.01 par value per share (Title of Class of Securities) 98974P100 (CUSIP Number) James H. Greene, Jr. True Wind Capital Management, L.P. Four Embarcadero Center, Suite 2100 San Francisco, CA 94111

March 5, 2021 EX-10.28

Restricted Stock Agreement (Performance-Based Award -- 2021 Annual Performance Period), dated November 11, 2020, by and between Zix Corporation and Ryan Allphin

EX-10.28 5 zixi-ex1028260.htm EX-10.28 Exhibit 10.28 ZIX CORPORATION RESTRICTED STOCK AGREEMENT Performance Based Award This Restricted Stock Agreement (this “Agreement”) is effective as of the grant date set forth in the Grant Details section below (“Grant Details”) with respect to the Restricted Shares (defined below) described in the Grant Details which are granted by Zix Corporation, a Texas c

March 5, 2021 10-K

Annual Report - 10-K

United States SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K (Mark One) ? ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2020 ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 0-17995 Zix Corporation (Ex

March 5, 2021 EX-10.27

Restricted Stock Agreement (Time-Based Award), dated November 11, 2020, by and between Zix Corporation and Ryan Allphin

EX-10.27 4 zixi-ex1027257.htm EX-10.27 Exhibit 10.27 ZIX CORPORATION RESTRICTED STOCK AGREEMENT This Restricted Stock Agreement (this “Agreement”) is effective as of the grant date set forth in the Grant Details section below (“Grant Details”) with respect to the Restricted Shares (defined below) described in the Grant Details which are granted by Zix Corporation, a Texas corporation (the “Company

March 5, 2021 EX-10.25

Form of Director or Officer Indemnity Agreement.

EX-10.25 3 zixi-ex1025256.htm EX-10.25 Exhibit 10.25 INDEMNITY AGREEMENT This INDEMNITY AGREEMENT (this “Agreement”) is made and entered into as of the day of , 2021, by and between Zix Corporation, a Texas corporation (the “Company”), and [Employee Name] (the “Indemnitee”). WHEREAS, the Indemnitee is or is expected to become a member of the board of directors and/or an officer of the Company; WHE

March 5, 2021 EX-10.29

Restricted Stock Agreement (Performance-Based Award -- 2022 Annual Performance Period), dated November 11, 2020, by and between Zix Corporation and Ryan Allphin.

EX-10.29 6 zixi-ex1029259.htm EX-10.29 Exhibit 10.29 ZIX CORPORATION RESTRICTED STOCK AGREEMENT Performance Based Award This Restricted Stock Agreement (this “Agreement”) is effective as of the grant date set forth in the Grant Details section below (“Grant Details”) with respect to the Restricted Shares (defined below) described in the Grant Details which are granted by Zix Corporation, a Texas c

March 5, 2021 EX-4.1

Description of Securities.

EX-4.1 2 zixi-ex417.htm EX-4.1 Exhibit 4.1 DESCRIPTION OF SECURITIES As of December 31, 2020, Zix Corporation (“we”, or “Zix”) had one class of securities registered under Section 12 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”): $0.01 par value common stock. Our authorized capital stock consists of: 175,000,000 shares of common stock; and 10,000,000 shares of preferred s

March 5, 2021 EX-10.32

Forms of Restricted Stock Unit Agreements Issuable Under Israel Award Plan.

Exhibit 10.32 ZIX CORPORATION FORM OF RESTRICTED STOCK UNIT AGREEMENT (Performance-Based Vesting) Israel Award Plan This Restricted Stock Unit Agreement (this ?Agreement?) is effective as of the Grant Date set forth in the Grant Details section below (?Grant Details?) with respect to the Restricted Stock Units described in the Grant Details which are granted by Zix Corporation, a Texas corporation

March 5, 2021 EX-10.31

Israel Award Plan of Zix Corporation, effective November 5, 2020.

EX-10.31 8 zixi-ex1031254.htm EX-10.31 Exhibit 10.31 ISRAEL AWARD PLAN OF ZIX CORPORATION Effective November 5, 2020 (the " Israel Plan") 1.General 1.1 This Israel Award Plan of Zix Corporation (this “Israel Plan”) is to be construed in accordance with the terms of the Zix Corporation 2018 Omnibus Award Plan (Amended and Restated Effective June 6, 2018) (the “Plan”)Israel Plan. The provisions of t

March 5, 2021 EX-10.30

Employee Stock Option Agreement, dated November 11, 2020, by and between Zix Corporation and Ryan Allphin

Exhibit 10.30 ZIX CORPORATION EMPLOYEE STOCK OPTION AGREEMENT This Employee Stock Option Agreement (?Option?) is effective as of the Grant Date set forth in the Grant Detail section of this Option (?Grant Details?) with respect to the stock option described in the Grant Details that is granted by Zix Corporation, a Texas corporation (?Company?), to the person (?Optionee?) named in the Grant Detail

March 5, 2021 EX-21.1

Subsidiaries of Zix Corporation.

EX-21.1 10 zixi-ex2119.htm EX-21.1 Exhibit 21.1 Zix Corporation Subsidiary List AppRiver AG, a Switzerland corporation AppRiver AG Spain, a Spain corporation AppRiver Canada ULC, a Nova Scotia corporation AppRiver, LLC, a Florida Limited Liability corporation AppRiver Parent, LLC, a Delaware Limited Liability corporation AppRiver UK Ltd., a United Kingdom corporation ARM Research Labs, LLC, a Flor

February 25, 2021 8-K

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): February 25, 2021 ZIX CORPORATION (Exact name of registrant as specified in its charter) Texas 0-17995 75-2216818 (State or other jurisdiction of incorporation) (Commission File Numbe

February 25, 2021 EX-99.1

Zix Reports Fourth Quarter and Full Year 2020 Financial Results Continued Adoption of Secure Cloud Platform Drives Record 2020 Revenue of $218.5 Million and 21% Cloud ARR Growth Along with Strong Cash Flow from Operations of $31.3 Million

EX-99.1 2 d131634dex991.htm EX-99.1 Exhibit 99.1 Press Release | For Distribution Zix Reports Fourth Quarter and Full Year 2020 Financial Results Continued Adoption of Secure Cloud Platform Drives Record 2020 Revenue of $218.5 Million and 21% Cloud ARR Growth Along with Strong Cash Flow from Operations of $31.3 Million DALLAS — February 25, 2021 — Zix Corporation (Zix) (NASDAQ: ZIXI), a leading pr

February 10, 2021 SC 13G

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 Name of issuer: Zix Corp. Title of Class of Securities: Common Stock CUSIP Number: 98974P100 Date of Event Which Requires Filing of this Statement: December 31, 2020 Check the appropriate box to designate the rule pursuant to which this Schedule is filed: ☒ Rule 13d-1(b) ☐ Rule 13d-1(c)

January 13, 2021 SC 13D/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 7)* ZIX CORPORATION (Name of Issuer) Common Stock, $0.01 par value per share (Title of Class of Securities)

SC 13D/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 7)* ZIX CORPORATION (Name of Issuer) Common Stock, $0.01 par value per share (Title of Class of Securities) 98974P100 (CUSIP Number) James H. Greene, Jr. True Wind Capital Management, L.P. Four Embarcadero Center, Suite 2100 San Francisco, CA 94111

November 9, 2020 EX-99.2

Zix Acquires Leading Cloud-Based Backup and Recovery Provider CloudAlly

EX-99.2 4 d90836dex992.htm EX-99.2 Exhibit 99.2 Press Release | For Distribution Zix Acquires Leading Cloud-Based Backup and Recovery Provider CloudAlly DALLAS — November 9, 2020 — Zix Corporation (Zix), (Nasdaq: ZIXI), a leading provider of cloud email security, productivity and compliance solutions, has acquired privately-held CloudAlly Ltd., an industry leader in cloud-based data backup and rec

November 9, 2020 EX-99.1

Zix Reports Third Quarter 2020 Financial Results Secure Cloud Adoption Drives 15% Revenue Growth to $54.8 Million and 19% Cloud ARR Growth Along with Strong Cash From Operations of $15.1 Million

EX-99.1 Exhibit 99.1 Zix Reports Third Quarter 2020 Financial Results Secure Cloud Adoption Drives 15% Revenue Growth to $54.8 Million and 19% Cloud ARR Growth Along with Strong Cash From Operations of $15.1 Million DALLAS — November 9, 2020 — Zix Corporation (Zix) (NASDAQ: ZIXI), a leading provider of cloud email security, productivity and compliance solutions, today announced financial results f

November 9, 2020 EX-10.1

Incremental Amendment No. 1 and First Amendment to Credit Agreement dated November 5, 2020, by and among Zix Corporation, the financial institutions listed on Schedule I thereto under the heading “Incremental Term Lender” and Truist Bank, successor by merger to SunTrust Bank, as administrative agent.

EX-10.1 2 d90836dex101.htm EX-10.1 Exhibit 10.1 Execution Version INCREMENTAL AMENDMENT NO. 1 AND FIRST AMENDMENT TO CREDIT AGREEMENT INCREMENTAL AMENDMENT NO. 1 AND FIRST AMENDMENT TO CREDIT AGREEMENT, dated as of November 5, 2020 (this “Amendment”), is entered into by and among Zix Corporation, a Texas corporation (the “Borrower”), each of the financial institutions set forth on Schedule I heret

November 9, 2020 10-Q

Quarterly Report - 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2020 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 0-17995 ZIX CORPOR

November 9, 2020 8-K

Regulation FD Disclosure, Entry into a Material Definitive Agreement, Financial Statements and Exhibits, Results of Operations and Financial Condition, Other Events - 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): November 5, 2020 ZIX CORPORATION (Exact name of registrant as specified in its charter) Texas 0-17995 75-2216818 (State or other jurisdiction of incorporation) (Commission File Number

November 9, 2020 EX-99.3

Zix Announces Grant of Non-Plan Equity Awards

EX-99.3 Exhibit 99.3 Zix Announces Grant of Non-Plan Equity Awards DALLAS — November 9, 2020 — Zix Corporation (Zix), (Nasdaq: ZIXI), a leading provider of cloud email security, productivity and compliance solutions, today announced that, in connection with its recent acquisition of CloudAlly Ltd., its board authorized a new, non-shareholder-approved equity plan under Nasdaq rules that permit the

October 22, 2020 SC 13D/A

ZIXI / Zix Corporation / True Wind Capital, L.P. - SC 13D/A Activist Investment

SC 13D/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 6)* ZIX CORPORATION (Name of Issuer) Common Stock, $0.01 par value per share (Title of Class of Securities) 98974P100 (CUSIP Number) James H. Greene, Jr. True Wind Capital Management, L.P. Four Embarcadero Center, Suite 2100 San Francisco, CA 94111

August 6, 2020 10-Q

Quarterly Report - 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2020 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 0-17995 ZIX CORPORATION

August 5, 2020 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

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): August 5, 2020 ZIX CORPORATION (Exact name of registrant as specified in its charter) Texas 0-17995 75-2216818 (State or other jurisdiction of incorporation) (Commission File Numb

August 5, 2020 EX-99.1

Zix Reports Second Quarter 2020 Financial Results Secure Modern Workplace Success Drives 16% Revenue Growth to $53.3 Million and 11% ARR Growth to $215.9 Million, Validating Profitable Growth Strategy and Business Model Resiliency

EX-99.1 2 d91472dex991.htm EX-99.1 Exhibit 99.1 Press Release | For Distribution Zix Reports Second Quarter 2020 Financial Results Secure Modern Workplace Success Drives 16% Revenue Growth to $53.3 Million and 11% ARR Growth to $215.9 Million, Validating Profitable Growth Strategy and Business Model Resiliency DALLAS — August 5, 2020 — Zix Corporation (Zix) (NASDAQ: ZIXI), a leading provider of cl

June 30, 2020 SC 13D/A

ZIXI / Zix Corporation / True Wind Capital, L.p. - SC 13D/A Activist Investment

SC 13D/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 5)* ZIX CORPORATION (Name of Issuer) Common Stock, $0.01 par value per share (Title of Class of Securities) 98974P100 (CUSIP Number) James H. Greene, Jr. True Wind Capital Management, L.P. Four Embarcadero Center, Suite 2100 San Francisco, CA 94111

June 12, 2020 8-K

Submission of Matters to a Vote of Security Holders

Form 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): June 10, 2020 ZIX CORPORATION (Exact name of registrant as specified in its charter) Texas 0-17995 75-2216818 (State or other jurisdiction of incorporation) (Commission File

June 4, 2020 CORRESP

-

Zix Corporation 2711 North Haskell Avenue Suite 2200, LB 36 Dallas, Texas 75204 June 4, 2020 VIA EDGAR U.

June 1, 2020 S-3

Form S-3

S-3 Table of Contents As filed with the Securities and Exchange Commission on June 1, 2020 Registration No.

June 1, 2020 RW

- RW

RW Zix Corporation 2711 North Haskell Avenue Suite 2200, LB 26 Dallas, Texas 75204 (214) 370-2000 June 1, 2020 VIA EDGAR United States Securities and Exchange Commission Division of Corporation Finance 100 F Street, N.

May 7, 2020 10-Q

Quarterly Report - 10-Q

10-Q 1 zixi-10q20200331.htm 10-Q UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2020 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission Fi

May 6, 2020 EX-99.1

Zix Reports First Quarter 2020 Financial Results Cross-Selling Efforts Drive 15% Organic Revenue Growth to $52.4 Million, Coupled with Improving Profitability Demonstrating Business Model Resiliency

EX-99.1 2 d851714dex991.htm EX-99.1 Exhibit 99.1 Press Release | For Distribution Zix Reports First Quarter 2020 Financial Results Cross-Selling Efforts Drive 15% Organic Revenue Growth to $52.4 Million, Coupled with Improving Profitability Demonstrating Business Model Resiliency DALLAS — May 6, 2020 — Zix Corporation (Zix) (NASDAQ: ZIXI), a leading provider of cloud email security solutions, toda

May 6, 2020 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

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): May 6, 2020 ZIX CORPORATION (Exact name of registrant as specified in its charter) Texas 0-17995 75-2216818 (State or other jurisdiction of incorporation) (Commission File Number)

April 24, 2020 DEF 14A

Definitive Proxy Statement

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A 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(e)(2)) ☒ Defin

April 24, 2020 DEFA14A

- DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A 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(e)(2)) ☐ Defin

March 25, 2020 SC 13D/A

ZIXI / Zix Corporation / True Wind Capital, L.p. - SC 13D/A Activist Investment

SC 13D/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 4)* ZIX CORPORATION (Name of Issuer) Common Stock, $0.01 par value per share (Title of Class of Securities) 98974P100 (CUSIP Number) James H. Greene, Jr. True Wind Capital Management, L.P. Four Embarcadero Center, Suite 2100 San Francisco, CA 94111

March 10, 2020 EX-99.1

Zix Corporation Adds Marcy Campbell to Board of Directors

EX-99.1 2 d900611dex991.htm EX-99.1 Exhibit 99.1 Press Release | For Distribution Zix Corporation Adds Marcy Campbell to Board of Directors DALLAS — March 10, 2020 — Zix Corporation (Zix) (NASDAQ: ZIXI), a leading provider of cloud email security solutions, a leading provider of cloud email security, compliance and productivity solutions, today announced that Marcy Campbell, vice president and gen

March 10, 2020 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

8-K 1 d900611d8k.htm FORM 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): March 10, 2020 (March 9, 2020) ZIX CORPORATION (Exact name of registrant as specified in its charter) Texas 0-17995 75-2216818 (State or other jurisdicti

March 9, 2020 EX-4.1

Description of Securities.

EX-4.1 2 zixi-ex41791.htm EX-4.1 Exhibit 4.1 DESCRIPTION OF SECURITIES As of December 31, 2019, Zix Corporation (“we”, or “Zix”) had one class of securities registered under Section 12 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”): $0.01 par value common stock. Our authorized capital stock consists of: 175,000,000 shares of common stock; and 10,000,000 shares of preferred

March 9, 2020 10-K

Annual Report

10-K 1 zixi-10k20191231.htm 10-K United States SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2019 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Nu

March 9, 2020 EX-21.1

Subsidiaries of Zix Corporation

Exhibit 21.1 Zix Corporation Subsidiary List AppRiver AG, a Switzerland corporation AppRiver AG Spain, a Spain corporation AppRiver Canada ULC, a Nova Scotia corporation AppRiver, LLC, a Florida Limited Liability corporation AppRiver Parent, LLC, a Delaware Limited Liability corporation AppRiver UK Ltd., a United Kingdom corporation ARM Research Labs, LLC, a Florida Limited Liability corporation C

February 20, 2020 EX-99.1

Zix Reports Fourth Quarter and Full Year 2019 Financial Results Strong Cross-Selling Efforts Drive 15% Organic Annual Revenue Growth to $173.4 Million and 16% Organic Annual Recurring Revenue (ARR) Growth to $209.7 Million

EX-99.1 2 d629128dex991.htm EX-99.1 Exhibit 99.1 Press Release | For Distribution Zix Reports Fourth Quarter and Full Year 2019 Financial Results Strong Cross-Selling Efforts Drive 15% Organic Annual Revenue Growth to $173.4 Million and 16% Organic Annual Recurring Revenue (ARR) Growth to $209.7 Million DALLAS — February 20, 2020 — Zix Corporation (Zix) (NASDAQ: ZIXI), a leading provider of cloud

February 20, 2020 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

Form 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): February 20, 2020 ZIX CORPORATION (Exact name of registrant as specified in its charter) Texas 0-17995 75-2216818 (State or other jurisdiction of incorporation) (Commission F

January 2, 2020 SC 13D/A

ZIXI / Zix Corporation / True Wind Capital, L.p. - SC 13D/A Activist Investment

SC 13D/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 3)* ZIX CORPORATION (Name of Issuer) Common Stock, $0.01 par value per share (Title of Class of Securities) 98974P100 (CUSIP Number) James H. Greene, Jr. True Wind Capital Management, L.P. Four Embarcadero Center, Suite 2350 San Francisco, CA 94111

November 6, 2019 10-Q

ZIXI / Zix Corporation 10-Q - Quarterly Report - 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2019 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 0-17995 ZIX CORPOR

October 31, 2019 EX-99.1

Zix Reports Third Quarter 2019 Financial Results Enhanced Cross-Selling Efforts Drive Another Quarter of 15% Organic Revenue Growth, Expanding Adjusted EBITDA Margins, and 18% Organic Annual Recurring Revenue (ARR) Growth to $200.3 Million

EX-99.1 2 d827315dex991.htm EX-99.1 Exhibit 99.1 Press Release | For Distribution Zix Reports Third Quarter 2019 Financial Results Enhanced Cross-Selling Efforts Drive Another Quarter of 15% Organic Revenue Growth, Expanding Adjusted EBITDA Margins, and 18% Organic Annual Recurring Revenue (ARR) Growth to $200.3 Million DALLAS — October 31, 2019 — Zix Corporation (Zix) (NASDAQ: ZIXI), a leading pr

October 31, 2019 8-K

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 31, 2019 ZIX CORPORATION (Exact name of registrant as specified in its charter) Texas 0-17995 75-2216818 (State or other jurisdiction of incorporation) (Commission File Number

September 12, 2019 SC 13D/A

ZIXI / Zix Corporation / True Wind Capital, L.p. - SC 13D/A Activist Investment

SC 13D/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 2)* ZIX CORPORATION (Name of Issuer) Common Stock, $0.01 par value per share (Title of Class of Securities) 98974P100 (CUSIP Number) James H. Greene, Jr. True Wind Capital Management, L.P. Four Embarcadero Center, Suite 2350 San Francisco, CA 94111

September 12, 2019 EX-99.F

MARGIN LOAN AGREEMENT dated as of September 10, 2019 ZEPHYR HOLDCO, LLC as Borrower, THE LENDERS PARTY from Time to Time Party Hereto, DEUTSCHE BANK AG, LONDON BRANCH, as Administrative Agent, Calculation Agent and a Lender

EX-99.F 2 d719943dex99f.htm EX-99.F Exhibit F MARGIN LOAN AGREEMENT dated as of September 10, 2019 among ZEPHYR HOLDCO, LLC as Borrower, THE LENDERS PARTY from Time to Time Party Hereto, and DEUTSCHE BANK AG, LONDON BRANCH, as Administrative Agent, Calculation Agent and a Lender TABLE OF CONTENTS Page ARTICLE 1 DEFINITIONS AND ACCOUNTING TERMS 1 Section 1.01. Certain Defined Terms 1 Section 1.02.

August 7, 2019 10-Q

ZIXI / Zix Corporation 10-Q - Quarterly Report - 10-Q - Q2 2019

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2019 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 0-17995 ZIX CORPORATION

August 2, 2019 8-K/A

Financial Statements and Exhibits, Results of Operations and Financial Condition

Form 8-K/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): August 1, 2019 ZIX CORPORATION (Exact Name of Registrant as Specified in Charter) Texas 0-17995 75-2216818 (State or Other Jurisdiction of Incorporation

August 2, 2019 EX-99.1

Zix Reports Second Quarter 2019 Financial Results 15% Organic Revenue Growth, Cross Sell Success, Expanding Adjusted EBITDA Margins, and Successful Completion of Integration Milestones Accelerate Company’s Growth Strategy

EX-99.1 2 d764082dex991.htm EX-99.1 Exhibit 99.1 Press Release | For Distribution Zix Reports Second Quarter 2019 Financial Results 15% Organic Revenue Growth, Cross Sell Success, Expanding Adjusted EBITDA Margins, and Successful Completion of Integration Milestones Accelerate Company’s Growth Strategy DALLAS — August 1, 2019 — Zix Corporation (Zix) (NASDAQ: ZIXI), a leader in email security, toda

August 1, 2019 EX-99.1

Zix Reports Second Quarter 2019 Financial Results 15% Organic Revenue Growth, Cross Sell Success, Expanding Adjusted EBITDA Margins, and Successful Completion of Integration Milestones Accelerate Company’s Growth Strategy

Exhibit 99.1 Press Release | For Distribution Zix Reports Second Quarter 2019 Financial Results 15% Organic Revenue Growth, Cross Sell Success, Expanding Adjusted EBITDA Margins, and Successful Completion of Integration Milestones Accelerate Company’s Growth Strategy DALLAS — August 1, 2019 — Zix Corporation (Zix) (NASDAQ: ZIXI), a leader in email security, today announced financial results for th

August 1, 2019 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

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): August 1, 2019 ZIX CORPORATION (Exact name of registrant as specified in its charter) Texas 0-17995 75-2216818 (State or other jurisdiction of incorporation) (Commission File Numb

June 7, 2019 SC 13D/A

ZIXI / Zix Corporation / True Wind Capital, L.p. - SC 13D/A Activist Investment

SC 13D/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 1)* ZIX CORPORATION (Name of Issuer) Common Stock, $0.01 par value per share (Title of Class of Securities) 98974P100 (CUSIP Number) James H. Greene, Jr. True Wind Capital Management, L.P. Four Embarcadero Center, Suite 2350 San Francisco, CA 94111

June 6, 2019 8-K

Submission of Matters to a Vote of Security Holders

8-K 1 d670395d8k.htm 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): June 5, 2019 ZIX CORPORATION (Exact name of registrant as specified in its charter) Texas 0-17995 75-2216818 (State or other jurisdiction of incorporation) (C

May 9, 2019 8-K/A

Financial Statements and Exhibits

8-K/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): February 20, 2019 ZIX CORPORATION (Exact Name of Registrant as Specified in Charter) Texas 0-17995 75-2216818 (State or Other Jurisdiction of Incorporation)

May 9, 2019 EX-99.1

Consolidated Financial Statements and Report of Independent Certified Public Accountants

EX-99.1 Exhibit 99.1 Consolidated Financial Statements and Report of Independent Certified Public Accountants AppRiver, LLC and Subsidiaries December 31, 2016 and 2015 AppRiver, LLC and Subsidiaries Table of contents Report of Independent Certified Public Accountants 1 Consolidated financial statements: Consolidated balance sheets 3 Consolidated statements of earnings and comprehensive income 4 Co

May 9, 2019 10-Q

ZIXI / Zix Corporation 10-Q Quarterly Report 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2019 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 0-17995 ZIX CORPORATIO

May 8, 2019 EX-99.1

UNAUDITED PRO FORMA COMBINED CONSOLIDATED FINANCIAL STATEMENTS

Exhibit 99.1 UNAUDITED PRO FORMA COMBINED CONSOLIDATED FINANCIAL STATEMENTS On February 20, 2019 (the “Acquisition Date”), Zix Corporation (“we”, “us”, “Zix”, or the “Company”) acquired AppRiver, a leading provider of cloud-based cybersecurity solutions (the “Acquisition”). The Company entered into a securities purchase agreement to acquire 100% of the issued and outstanding equity interests of AR

May 8, 2019 EX-99.5

Consolidated Financial Statements

EX-99.5 Exhibit 99.5 Consolidated Financial Statements AR Topco, LLC and Subsidiaries As of September 30, 2018 and December 31, 2017 and for the three and nine months ended September 30, 2018 and September 30, 2017 AR Topco, LLC and Subsidiaries Table of contents Consolidated financial statements: Consolidated balance sheets 2 Consolidated statements of comprehensive loss 3 Consolidated statements

May 8, 2019 8-K/A

Financial Statements and Exhibits, Completion of Acquisition or Disposition of Assets

Form 8-K/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): February 20, 2019 ZIX CORPORATION (Exact Name of Registrant as Specified in Charter) Texas 0-17995 75-2216818 (State or Other Jurisdiction of Incorporat

May 8, 2019 EX-99.3

INDEPENDENT AUDITORS’ REPORT

EX-99.3 4 d744215dex993.htm EX-99.3 Exhibit 99.3 Consolidated Financial Statements and Independent Auditors’ Report AppRiver, LLC and Subsidiaries (a Wholly-Owned Subsidiary of AppRiver Holdings, LLC) As of October 4, 2017 and for the Period from January 1, 2017 to October 4, 2017 AppRiver, LLC and Subsidiaries Table of contents Independent Auditors’ Report 1 Consolidated financial statements: Con

May 8, 2019 EX-99.4

INDEPENDENT AUDITORS’ REPORT

EX-99.4 5 d744215dex994.htm EX-99.4 Exhibit 99.4 Consolidated Financial Statements and Independent Auditors’ Report AR Topco, LLC and Subsidiaries As of December 31, 2017 and for the Period from October 5, 2017 to December 31, 2017 AR Topco, LLC and Subsidiaries Table of contents Independent Auditors’ Report 1 Consolidated financial statements: Consolidated balance sheet 2 Consolidated statement o

May 8, 2019 EX-99.1

Zix Acquires the Assets of Email Security Provider DeliverySlip Acquisition Expands Company’s Product Suite and Customer Base, Delivers Cost Savings, and Creates Additional Cross-Selling Opportunities

EX-99.1 Exhibit 99.1 Press Release | For Distribution Zix Acquires the Assets of Email Security Provider DeliverySlip Acquisition Expands Company’s Product Suite and Customer Base, Delivers Cost Savings, and Creates Additional Cross-Selling Opportunities DALLAS — May 8, 2019 — Zix Corporation (Zix) (NASDAQ: ZIXI), a leader in email security, has acquired the assets of Cirius Messaging Inc. and who

May 8, 2019 8-K

Regulation FD Disclosure, Financial Statements and Exhibits, Completion of Acquisition or Disposition of Assets

Form 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): May 7, 2019 ZIX CORPORATION (Exact name of registrant as specified in its charter) Texas 0-17995 75-2216818 (State or other jurisdiction of incorporation) (Commission File Nu

May 2, 2019 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

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): May 2, 2019 ZIX CORPORATION (Exact name of registrant as specified in its charter) Texas 0-17995 75-2216818 (State or other jurisdiction of incorporation) (Commission File Number)

May 2, 2019 EX-99.1

Zix Reports First Quarter 2019 Financial Results Strong Business Momentum Yields 14% Organic Revenue Growth, Driven by Record New First Year Orders and Higher Attach Rates

EX-99.1 Exhibit 99.1 Zix Reports First Quarter 2019 Financial Results Strong Business Momentum Yields 14% Organic Revenue Growth, Driven by Record New First Year Orders and Higher Attach Rates DALLAS — May 2, 2019 — Zix Corporation (Zix) (NASDAQ: ZIXI), a leader in email security, today announced financial results for the first quarter ended March 31, 2019. First Quarter 2019 Financial Highlights

April 26, 2019 DEFA14A

ZIXI / Zix Corporation DEFA14A DEFA14A

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. ) 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

April 26, 2019 DEF 14A

ZIXI / Zix Corporation DEF 14A DEF 14A

DEF 14A Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

April 12, 2019 CORRESP

ZIXI / Zix Corporation CORRESP - -

CORRESP ZIX CORPORATION 2711 North Haskell Avenue Suite 2200, LB 36 Dallas, TX 75204 April 12, 2019 Via EDGAR Securities and Exchange Commission Division of Corporation Finance 100 F Street, NE Washington, DC 20549 Attn: Jan Woo Legal Branch Chief Office of Information Technologies and Services Division of Corporation Finance Re : ZIX CORPORATION Preliminary Proxy Statement on Schedule 14A Filed March 29, 2019 File No.

March 29, 2019 PRE 14A

ZIXI / Zix Corporation PRE 14A

PRE 14A 1 d657303dpre14a.htm PRE 14A 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 Us

March 8, 2019 EX-2.2

Securities Purchase Agreement, dated as of January 14, 2019, by and among Zix Corporation, AR Topco, LLC, AppRiver Marlin Blocker Corp., AppRiver Holdings, LLC, AppRiver Marlin Topco, L.P., AppRiver Management Holding, LLC, Marlin Equity IV, L.P. and Marlin Topco GP, LLC, as the sellers’ representative. Filed as Exhibit 2.2 to Zix Corporation’s Annual Report on Form 10-K for the year ended December 31, 2018, and incorporated herein by reference.

Exhibit 2.2 SECURITIES PURCHASE AGREEMENT among Zix CORPoration, and AR TOPCO, LLC AppRiver Marlin Blocker Corp. APPRIVER HOLDINGS, LLC APPRIVER MARLIN TOPCO, L.P. AppRIVER MANAGEMENT HOLDING, LLC MARLIN EQUITY IV, L.P. Marlin ToPCO GP, llc, as the sellers’ REPRESENTATIVE Dated as of January 14, 2019 TABLE OF CONTENTS Page ARTICLE I DEFINITIONS 7 Section 1.1 Certain Defined Terms 7 Section 1.2 Tab

March 8, 2019 10-K

ZIXI / Zix Corporation 10-K (Annual Report)

United States SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2018 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 0-17995 Zix Corporation (Ex

March 8, 2019 EX-21.1

Subsidiaries of Zix Corporation.

Exhibit 21.1 Zix Corporation Subsidiary List CM2.com, Inc. d/b/a Erado, a Washington corporation Greenview Data, Inc., a Michigan corporation PocketScript, Inc., an Ohio corporation ZixCorp Canada, Inc., an Ontario corporation ZixCorp Global, Inc., a Delaware corporation ZixCorp Systems, Inc., a Delaware corporation

March 8, 2019 EX-10.22

Debt Commitment Letter, dated as of January 14, 2019, by and among SunTrust Robinson Humphrey, Inc., SunTrust Bank, KeyBanc Capital Markets Inc., KeyBank National Association and Zix Corporation.

Exhibit 10.22 SUNTRUST BANK SUNTRUST ROBINSON HUMPHREY, INC. 3333 Peachtree Road Atlanta, Georgia 30326 KEYBANK NATIONAL ASSOCIATION KEYBANC CAPITAL MARKETS INC. 127 Public Square Cleveland, Ohio 44114 CONFIDENTIAL January 14, 2019 Zix Corporation 2711 N. Haskell Avenue, Suite 2200 Dallas, TX 75204 Attention: David Rockvam Project Zephyr Commitment Letter Ladies and Gentlemen: You have advised Sun

March 8, 2019 EX-10.23

Credit Agreement, dated as of February 20, 2019, by and among Zix Corporation, the lenders party thereto, and SunTrust Bank, as administrative agent. Filed as Exhibit 10.23 to Zix Corporation’s Annual Report on Form 10-K for the year ended December 31, 2018, and incorporated herein by reference.

Exhibit 10.23 CUSIP NO. 98977UAA4 TERM FACILITY CUSIP NO. 98977UAC0 REVOLVING CREDIT FACILITY CUSIP NO. 98977UAB2 DELAYED DRAW TERM FACILITY CUSIP NO. 98977UAD8 CREDIT AGREEMENT dated as of February 20, 2019 among Zix Corporation, as Borrower, The Lenders From Time to Time Party Hereto, and SunTrust Bank, as Administrative Agent SunTrust Robinson Humphrey, Inc., KEYBANC CAPITAL MARKETS INC., REGIO

February 28, 2019 EX-99.1

Zix Reports Fourth Quarter and Full Year 2018 Financial Results Higher Cloud Based Encryption Adoption and Increasing Attach Rates Drive Record Fourth Quarter New First Year Orders, Double-Digit Revenue Growth and Record Adjusted EBITDA

EX-99.1 Zix Reports Fourth Quarter and Full Year 2018 Financial Results Higher Cloud Based Encryption Adoption and Increasing Attach Rates Drive Record Fourth Quarter New First Year Orders, Double-Digit Revenue Growth and Record Adjusted EBITDA DALLAS — February 28, 2019 — Zix Corporation (Zix) (NASDAQ: ZIXI), a leader in email security, today announced financial results for the fourth quarter and

February 28, 2019 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

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): February 28, 2019 ZIX CORPORATION (Exact name of registrant as specified in its charter) Texas 0-17995 75-2216818 (State or other jurisdiction of incorporation) (Commission File N

February 22, 2019 SC 13D

ZIXI / Zix Corporation / True Wind Capital, L.p. - SC 13D Activist Investment

SC 13D UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. )* ZIX CORPORATION (Name of Issuer) Common Stock, $0.01 par value per share (Title of Class of Securities) 98974P100 (CUSIP Number) James H. Greene, Jr. True Wind Capital Management, L.P. Four Embarcadero Center, Suite 2350 San Francisco, CA 94111 (41

February 22, 2019 EX-99.A

JOINT FILING AGREEMENT PURSUANT TO RULE 13D-1(K)(1)

EX-99.A Exhibit A JOINT FILING AGREEMENT PURSUANT TO RULE 13D-1(K)(1) The undersigned acknowledge and agree that the Statement on Schedule 13D filed with the Securities and Exchange Commission on or about the date hereof with respect to the beneficial ownership by the undersigned of the Common Stock, par value $0.01 per share, of Zix Corporation, a Texas corporation, is filed on behalf of each of

February 21, 2019 EX-3.2

Certificate of Designations of Series B Convertible Preferred Stock, as filed with the Texas Secretary of State on February 15, 2019. Filed as Exhibit 3.2 to Zix Corporation’s Current Report on Form 8-K, filed on February 22, 2019, and incorporated herein by reference.

EX-3.2 3 d707885dex32.htm EX-3.2 Exhibit 3.2 CERTIFICATE OF DESIGNATIONS OF SERIES B CONVERTIBLE PREFERRED STOCK, PAR VALUE $1.00, OF ZIX CORPORATION ZIX CORPORATION, a corporation organized and existing under the Business Organizations Code of the State of Texas (the “Company”), in accordance with the provisions of Sections 21.155 and 21.156 thereof: HEREBY CERTIFIES: That, the Restated Articles

February 21, 2019 EX-3.1

Certificate of Designations of Series A Convertible Preferred Stock, as filed with the Texas Secretary of State on February 15, 2019. Filed as Exhibit 3.1 to Zix Corporation’s Current Report on Form 8-K, filed on February 22, 2019, and incorporated herein by reference.

EX-3.1 2 d707885dex31.htm EX-3.1 Exhibit 3.1 CERTIFICATE OF DESIGNATIONS OF SERIES A CONVERTIBLE PREFERRED STOCK, PAR VALUE $1.00, OF ZIX CORPORATION ZIX CORPORATION, a corporation organized and existing under the Business Organizations Code of the State of Texas (the “Company”), in accordance with the provisions of Sections 21.155 and 21.156 thereof: HEREBY CERTIFIES: That, the Restated Articles

February 21, 2019 EX-10.1

Registration Rights Agreement, dated as of February 20, 2019, by and among Zix Corporation and Zephyr Holdco, LLC. Filed as Exhibit 10.1 to Zix Corporation’s Current Report on Form 8-K, filed on February 22, 2019, and incorporated herein by reference.

EX-10.1 Table of Contents Exhibit 10.1 Execution Version REGISTRATION RIGHTS AGREEMENT by and between ZIX CORPORATION and ZEPHYR HOLDCO, LLC Dated as of February 20, 2019 Table of Contents TABLE OF CONTENTS Page ARTICLE I Resale Shelf Registration Section 1.1 Resale Shelf Registration Statement 1 Section 1.2 Effectiveness Period 1 Section 1.3 Subsequent Shelf Registration Statement 2 Section 1.4 S

February 21, 2019 8-K

Regulation FD Disclosure, Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year, Entry into a Material Definitive Agreement, Material Modification to Rights of Security Holders, Unregistered Sales of Equity Securities, 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

8-K 1 d707885d8k.htm FORM 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): February 20, 2019 ZIX CORPORATION (Exact Name of Registrant as Specified in Charter) Texas 0-17995 75-2216818 (State or Other Jurisdiction of Incorporati

February 21, 2019 EX-99.1

Zix Closes Acquisition of AppRiver, Creating Leading Cloud-based Cybersecurity Solutions Provider

EX-99.1 5 d707885dex991.htm EX-99.1 Exhibit 99.1 Press Release | For Distribution Zix Closes Acquisition of AppRiver, Creating Leading Cloud-based Cybersecurity Solutions Provider DALLAS — February 20, 2019 — Zix Corporation (Zix) (NASDAQ: ZIXI), a leader in email security, has closed its previously announced acquisition of AppRiver, a leading provider of cloud-based cybersecurity solutions, for $

January 17, 2019 8-K

Regulation FD Disclosure, Entry into a Material Definitive Agreement, Unregistered Sales of Equity Securities, Financial Statements and Exhibits, Results of Operations and Financial Condition

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 14, 2019 ZIX CORPORATION (Exact Name of Registrant as Specified in Charter) Texas 0-17995 75-2216818 (State or Other Jurisdiction of Incorporation) (Commission File Number

January 17, 2019 EX-10.1

Investment Agreement, dated as of January 14, 2019, by and between Zix Corporation and the investor named therein. Filed as Exhibit 10.1 to Zix Corporation’s Current Report on Form 8-K filed on January 17, 2019, and incorporated herein by reference.

EX-10.1 2 d656640dex101.htm EX-10.1 Exhibit 10.1 Execution Version INVESTMENT AGREEMENT by and between ZIX CORPORATION and TRUE WIND CAPITAL, L.P. Dated as of January 14, 2019 TABLE OF CONTENTS PAGE ARTICLE I DEFINITIONS Section 1.01 Definitions 1 ARTICLE II PURCHASE AND SALE Section 2.01 Purchase and Sale 9 Section 2.02 Closing 10 ARTICLE III REPRESENTATIONS AND WARRANTIES OF THE COMPANY Section

January 17, 2019 EX-99.2

Zix to Acquire AppRiver, Leading Cloud-based Cybersecurity Solutions Provider

EX-99.2 Exhibit 99.2 Press Release | For Distribution Zix to Acquire AppRiver, Leading Cloud-based Cybersecurity Solutions Provider • Combination Creates Leading Cloud-based Email Security Provider to Small and Midsize Business (SMB) Market with over $180 Million of Annual Recurring Revenue (ARR) • Company Also Secures $100 Million Convertible Preferred Equity Commitment from True Wind Capital and

January 17, 2019 EX-99.1

Zix Reports Preliminary Fourth Quarter and Fiscal Year 2018 Results

EX-99.1 3 d656640dex991.htm EX-99.1 Exhibit 99.1 Press Release | For Distribution Zix Reports Preliminary Fourth Quarter and Fiscal Year 2018 Results DALLAS — January 15, 2019 — Zix Corporation (Zix) (NASDAQ: ZIXI), a leader in email security, today announced select preliminary financial results for the fourth quarter and fiscal year ended December 31, 2018. Preliminary Fourth Quarter 2018 Results

December 31, 2018 CORRESP

ZIXI / Zix Corporation

CORRESP December 31, 2018 United States Securities and Exchange Commission Division of Corporation Finance Office of Information Technologies and Services Washington, D.

November 7, 2018 10-Q

ZIXI / Zix Corporation 10-Q (Quarterly Report)

10-Q 1 zixi-10q20180930.htm 10-Q UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2018 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commissio

October 23, 2018 EX-99.1

Zix Reports Third Quarter 2018 Financial Results New First Year Order Growth, Increasing Attach Rates and Rising Backlog Demonstrate Continued Successful Execution of Strategy

EX-99.1 Exhibit 99.1 Press Release | For Distribution Zix Reports Third Quarter 2018 Financial Results New First Year Order Growth, Increasing Attach Rates and Rising Backlog Demonstrate Continued Successful Execution of Strategy DALLAS — October 23, 2018 — Zix Corporation (Zix) (NASDAQ: ZIXI), a leader in email security, today announced financial results for the third quarter ended September 30,

October 23, 2018 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

8-K 1 d644434d8k.htm 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 23, 2018 ZIX CORPORATION (Exact name of registrant as specified in its charter) Texas 0-17995 75-2216818 (State or other jurisdiction of incorporation

August 23, 2018 EX-24

EX-24

POWER OF ATTORNEY Know all by these presents, that the undersigned hereby constitutes and appoints Noah F.

August 23, 2018 EX-24

EX-24

POWER OF ATTORNEY Know all by these presents, that the undersigned hereby constitutes and appoints Noah F.

August 23, 2018 EX-24

EX-24

POWER OF ATTORNEY Know all by these presents, that the undersigned hereby constitutes and appoints Noah F.

August 23, 2018 EX-24

EX-24

POWER OF ATTORNEY Know all by these presents, that the undersigned hereby constitutes and appoints Noah F.

August 23, 2018 EX-24

EX-24

POWER OF ATTORNEY Know all by these presents, that the undersigned hereby constitutes and appoints Noah F.

August 8, 2018 S-3/A

ZIXI / Zix Corporation AMENDMENT NO. 2 TO FORM S-3

Amendment No. 2 to Form S-3 Table of Contents As filed with the Securities and Exchange Commission on August 8, 2018 Registration No. 333-226456 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Amendment No. 2 to FORM S-3 REGISTRATION STATEMENT Under The Securities Act of 1933 Zix Corporation (Exact name of Registrant as specified in its charter) Texas 75-2216818 (State or O

August 8, 2018 CORRESP

ZIXI / Zix Corporation CORRESP

Acceleration Request Zix Corporation 2711 North Haskell Avenue Suite 2200, LB 36 Dallas, Texas 75204 Telephone: (214) 370-2000 August 8, 2018 VIA EDGAR United States Securities and Exchange Commission Division of Corporation Finance 100 F Street, N.

August 7, 2018 10-Q

ZIXI / Zix Corporation 10-Q (Quarterly Report)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2018 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 0-17995 ZIX CORPORATION

August 6, 2018 S-3/A

ZIXI / Zix Corporation AMENDMENT NO. 1 TO FORM S-3

S-3/A 1 d568561ds3a.htm AMENDMENT NO. 1 TO FORM S-3 Table of Contents As filed with the Securities and Exchange Commission on August 6, 2018 Registration No. 333-226456 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Amendment No. 1 to FORM S-3 REGISTRATION STATEMENT Under The Securities Act of 1933 Zix Corporation (Exact name of Registrant as specified in its charter) Texa

July 31, 2018 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

Form 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, 2018 ZIX CORPORATION (Exact name of registrant as specified in its charter) Texas 0-17995 75-2216818 (State or other jurisdiction of incorporation) (Commission File

July 31, 2018 EX-99.1

Zix Reports Second Quarter 2018 Financial Results Record Quarter Signals Strong Business Fundamentals and Expanding Growth

Exhibit 99.1 Zix Reports Second Quarter 2018 Financial Results Record Quarter Signals Strong Business Fundamentals and Expanding Growth DALLAS — July 31, 2018 — Zix Corporation (Zix) (NASDAQ: ZIXI), a leader in email security, today announced financial results for the second quarter ended June 30, 2018. Second Quarter 2018 Financial Highlights (results compared to the same year-ago quarter) • Reve

July 31, 2018 S-3

ZIXI / Zix Corporation FORM S-3

Form S-3 As filed with the Securities and Exchange Commission on July 31, 2018 Registration No.

June 29, 2018 S-8

ZIXI / Zix Corporation FORM S-8

Form S-8 As filed with the Securities and Exchange Commission on June 29, 2018 Registration No.

June 7, 2018 8-K

Submission of Matters to a Vote of Security Holders

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): June 6, 2018 ZIX CORPORATION (Exact name of registrant as specified in its charter) Texas 0-17995 75-2216818 (State or other jurisdiction of incorporation) (Commission File Number

May 8, 2018 10-Q

ZIXI / Zix Corporation 10-Q (Quarterly Report)

10-Q 1 zixi-10q20180331.htm 10-Q UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2018 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission Fi

May 2, 2018 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

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): May 2, 2018 ZIX CORPORATION (Exact name of registrant as specified in its charter) Texas 0-17995 75-2216818 (State or other jurisdiction of incorporation) (Commission File Number)

May 2, 2018 EX-99.1

Zix Reports First Quarter 2018 Financial Results

EX-99.1 2 d567198dex991.htm EX-99.1 Exhibit 99.1 Press Release | For Distribution Zix Reports First Quarter 2018 Financial Results Strong New Customer Acquisition and Add-on Success Demonstrate Momentum in Email Security Market DALLAS — May 2, 2018 — Zix Corporation (Zix) (NASDAQ: ZIXI), a leader in email security, today announced financial results for the first quarter ended March 31, 2018. First

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