CASA / Casa Systems, Inc. - Pengajuan SECLaporan Tahunan, Pernyataan Proksi

Casa Systems, Inc.
US ˙ NasdaqGS ˙ US14713L1026
HINDI NA ACTIVE ANG SIMBONG ITO

Mga Batayang Estadistika
LEI 549300PNQ0GUDHNZLG66
CIK 1333835
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 Casa Systems, Inc.
SEC Filings (Chronological Order)
Halaman ini menyediakan daftar lengkap dan kronologis dari Pengajuan SEC, tidak termasuk pengajuan kepemilikan yang kami sediakan di tempat lain.
June 10, 2024 POS AM

As filed with the Securities and Exchange Commission on June 7, 2024

As filed with the Securities and Exchange Commission on June 7, 2024 Registration No.

June 10, 2024 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

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 AND 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934. Commission File Number: 001-38324 CASA SYSTEMS, INC. (Exact name of registrant as specified

June 10, 2024 POS AM

As filed with the Securities and Exchange Commission on June 7, 2024

As filed with the Securities and Exchange Commission on June 7, 2024 Registration No.

June 10, 2024 POS AM

As filed with the Securities and Exchange Commission on June 7, 2024

As filed with the Securities and Exchange Commission on June 7, 2024 Registration No.

June 10, 2024 S-8 POS

As filed with the Securities and Exchange Commission on June 7, 2024

S-8 POS As filed with the Securities and Exchange Commission on June 7, 2024 Registration No.

June 10, 2024 POS AM

As filed with the Securities and Exchange Commission on June 7, 2024

As filed with the Securities and Exchange Commission on June 7, 2024 Registration No.

June 10, 2024 8-K

Material Modification to Rights 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 4, 2024 Casa Systems, Inc. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-38324 75-3108867 (State or Other Jurisdiction of Incorporation) (Commission File Nu

June 10, 2024 EX-10.1

IN THE UNITED STATES BANKRUPTCY COURT FOR THE DISTRICT OF DELAWARE In re: CASA SYSTEMS, INC., et al.,1 Debtors. Chapter 11 Case No. 24-10695 (KBO) (Jointly Administered) Ref: Docket No. 421 NOTICE OF (I) ENTRY OF CONFIRMATION ORDER, (II) OCCURRENCE O

Exhibit 10.1 IN THE UNITED STATES BANKRUPTCY COURT FOR THE DISTRICT OF DELAWARE In re: CASA SYSTEMS, INC., et al.,1 Debtors. Chapter 11 Case No. 24-10695 (KBO) (Jointly Administered) Ref: Docket No. 421 NOTICE OF (I) ENTRY OF CONFIRMATION ORDER, (II) OCCURRENCE OF EFFECTIVE DATE, AND (III) RELATED BAR DATES PLEASE TAKE NOTICE THAT: Confirmation of Plan. On June 5, 2024, the United States Bankruptc

June 10, 2024 EX-10.2

ASSET PURCHASE AGREEMENT by and among COMMSCOPE TECHNOLOGIES LLC, as Purchaser, CASA SYSTEMS, INC., CASA COMMUNICATIONS LIMITED, GUANGZHOU CASA COMMUNICATIONS LTD, CASA COMMUNICATIONS TECHNOLOGY S.L.U., CASA SYSTEMS CANADA LTD., and CASA SYSTEMS B.V.

Exhibit 10.2 Execution Version ASSET PURCHASE AGREEMENT by and among COMMSCOPE TECHNOLOGIES LLC, as Purchaser, and CASA SYSTEMS, INC., CASA COMMUNICATIONS LIMITED, GUANGZHOU CASA COMMUNICATIONS LTD, CASA COMMUNICATIONS TECHNOLOGY S.L.U., CASA SYSTEMS CANADA LTD., and CASA SYSTEMS B.V. as Sellers Dated as of May 29, 2024 Table of Contents Page ARTICLE 1 DEFINED TERMS 2 1.1 Defined Terms 2 1.2 Other

June 10, 2024 S-8 POS

As filed with the Securities and Exchange Commission on June 7, 2024

S-8 POS As filed with the Securities and Exchange Commission on June 7, 2024 Registration No.

May 3, 2024 EX-10.1

AMENDMENT NO. 1 TO ASSET PURCHASE AGREEMENT

Exhibit 10.1 Execution Version AMENDMENT NO. 1 TO ASSET PURCHASE AGREEMENT THIS AMENDMENT NO 1, dated April 25, 2024 (this “Amendment”) is made to the Asset Purchase Agreement dated April 2, 2024 (the “Purchase Agreement”) by and among (i) Lumine Group US Holdco Inc. (the “Buyer”), and (ii) Casa Systems, Inc., and certain of its subsidiaries who are signatories to this Amendment, (collectively, th

May 3, 2024 8-K

Entry into a Material Definitive Agreement, 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): April 29, 2024 Casa Systems, Inc. (Exact name of Registrant as Specified in Its Charter) Delaware 001-38324 75-3108867 (State or Other Jurisdiction of Incorporation) (Commission File

April 3, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 2, 2024 Casa Systems, Inc.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 2, 2024 Casa Systems, Inc. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-38324 75-3108867 (State or Other Jurisdiction of Incorporation) (Commission File N

April 3, 2024 EX-99.1

Casa Systems Initiates Court-Supervised Chapter 11 Sale Process for Businesses Reaches Agreements to Sell 5G Mobile Core and RAN Assets to Lumine Group and Cable Business to Vecima Networks

EX-99.1 Exhibit 99.1 Casa Systems Initiates Court-Supervised Chapter 11 Sale Process for Businesses Reaches Agreements to Sell 5G Mobile Core and RAN Assets to Lumine Group and Cable Business to Vecima Networks ANDOVER, Mass., April 3, 2024 – Casa Systems, Inc. (Nasdaq: CASA) (“Casa” or the “Company”), a leading provider of physical and cloud-native infrastructure technology solutions for wireless

April 3, 2024 EX-10.3

ASSET PURCHASE AGREEMENT by and among VECIMA TECHNOLOGY INC., as Purchaser, CASA SYSTEMS, INC., CASA COMMUNICATIONS LIMITED, GUANGZHOU CASA COMMUNICATIONS LTD, CASA COMMUNICATIONS TECHNOLOGY S.L.U., CASA SYSTEMS CANADA LTD., and CASA SYSTEMS B.V. as

EX-10.3 Exhibit 10.3 Execution Version ASSET PURCHASE AGREEMENT by and among VECIMA TECHNOLOGY INC., as Purchaser, and CASA SYSTEMS, INC., CASA COMMUNICATIONS LIMITED, GUANGZHOU CASA COMMUNICATIONS LTD, CASA COMMUNICATIONS TECHNOLOGY S.L.U., CASA SYSTEMS CANADA LTD., and CASA SYSTEMS B.V. as Sellers Dated as of April 2, 2024 Table of Contents Page ARTICLE 1 DEFINED TERMS 2 1.1 Defined Terms 2 1.2

April 3, 2024 EX-10.1

RESTRUCTURING SUPPORT AGREEMENT

EX-10.1 Exhibit 10.1 Execution Version THIS RESTRUCTURING SUPPORT AGREEMENT IS NOT AN OFFER OR ACCEPTANCE WITH RESPECT TO ANY SECURITIES OR A SOLICITATION OF ACCEPTANCES OF A CHAPTER 11 PLAN WITHIN THE MEANING OF SECTION 1125 OF THE BANKRUPTCY CODE. ANY SUCH OFFER, ACCEPTANCE, OR SOLICITATION WILL COMPLY WITH ALL APPLICABLE SECURITIES LAWS AND/OR PROVISIONS OF THE BANKRUPTCY CODE. NOTHING CONTAINE

April 3, 2024 EX-10.2

ASSET PURCHASE AGREEMENT by and among LUMINE GROUP US HOLDCO INC., as Purchaser, CASA SYSTEMS, INC., CASA COMMUNICATIONS Ltd. GUANGZHOU CASA COMMUNICATIONS Ltd CASA TECHNOLOGIES LIMITED, CASA COMMUNICATIONS TECHNOLOGY S.L.U., CASA SYSTEMS CANADA LIMI

EX-10.2 Exhibit 10.2 Execution Version ASSET PURCHASE AGREEMENT by and among LUMINE GROUP US HOLDCO INC., as Purchaser, and CASA SYSTEMS, INC., CASA COMMUNICATIONS Ltd. GUANGZHOU CASA COMMUNICATIONS Ltd CASA TECHNOLOGIES LIMITED, CASA COMMUNICATIONS TECHNOLOGY S.L.U., CASA SYSTEMS CANADA LIMITED, and CASA SYSTEMS B.V. as Sellers Dated as of April 2, 2024 Table of Contents Page ARTICLE 1 DEFINED TE

April 2, 2024 8-K

Current Report

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 27, 2024 Casa Systems, Inc. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-38324 75-3108867 (State or Other Jurisdiction of Incorporation) (Commission File

March 28, 2024 8-K

Current Report

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 22, 2024 Casa Systems, Inc. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-38324 75-3108867 (State or Other Jurisdiction of Incorporation) (Commission File

January 2, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): December 27, 2023 Casa Systems, I

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 27, 2023 Casa Systems, Inc. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-38324 75-3108867 (State or Other Jurisdiction of Incorporation) (Commission Fi

November 21, 2023 EX-10.1

* * *

Exhibit 10.1 November 17, 2023 Weidong Chen [ * * * ] [ * * * ] Re: Separation Agreement Dear Weidong: This letter confirms your separation from employment with Casa Systems, Inc. (the “Company”), effective as of November 30, 2023 (the “Separation Date”). Regardless of whether you sign this Agreement, the following bulleted terms and conditions apply in connection with your separation from employm

November 21, 2023 EX-10.2

CONSULTING AGREEMENT

Exhibit 10.2 CONSULTING AGREEMENT THIS CONSULTING AGREEMENT (“Agreement”) is made and entered into as of the 17th day of November 2023, by and between Casa Systems, Inc. (the “Company”) and Weidong Chen, an individual (“Consultant”) and effective as of the end of the Consultant’s employment with the Company per the terms of the Separation Agreement to which this Agreement is appended. For the avoi

November 21, 2023 EX-99.1

Casa Systems Sets Cable Industry Milestone with DOCSIS 4.0 Extended Spectrum Breakthrough

Exhibit 99.1 NEWS RELEASE Casa Systems Sets Cable Industry Milestone with DOCSIS 4.0 Extended Spectrum Breakthrough • Groundbreaking performance marks Casa Systems’ vCCAP and RPD as key innovators in cable technology virtualization • Full utilization of extended spectrum DOCSIS accelerates cable operator’s path to 10G • Casa Systems’ continued commitment to modernizing all access providers’ techno

November 21, 2023 8-K

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

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 17, 2023 Casa Systems, Inc. (Exact name of registrant as specified in its charter) Delaware 001-38324 75-3108867 (State or other jurisdiction of incorporation) (Commission Fi

November 17, 2023 EX-FILING FEES

Calculation of Filing Fee Tables Form S-8 (Form Type) Casa Systems, Inc. (Exact Name of Registrant as Specified in its Charter) Security Type Security Class Title Fee Calculation Rule Amount Registered(1) Proposed Maximum Offering Price Per Unit(3) M

EX-FILING FEES Exhibit 107 Calculation of Filing Fee Tables Form S-8 (Form Type) Casa Systems, Inc.

November 17, 2023 S-8

As filed with the United States Securities and Exchange Commission on November 17, 2023

As filed with the United States Securities and Exchange Commission on November 17, 2023 Registration No.

November 8, 2023 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, 2023 OR ☐ 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: 001-38324 Cas

November 7, 2023 EX-99.1

Casa Systems Reports Third Quarter 2023 Financial Results Third Quarter Revenue Increases 7% Over Prior Quarter Continued High Growth In Our Cloud and RAN Product Lines Revises Annual Revenue Guidance Range to $205 Million to $225 Million

Exhibit 99.1 Casa Systems Reports Third Quarter 2023 Financial Results Third Quarter Revenue Increases 7% Over Prior Quarter Continued High Growth In Our Cloud and RAN Product Lines Revises Annual Revenue Guidance Range to $205 Million to $225 Million Andover, Mass. – November 7, 2023 – Casa Systems, Inc. (Nasdaq: CASA), a leading provider of cloud-native software and physical broadband technology

November 7, 2023 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): November 7, 2023 Casa Systems, Inc. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-38324 75-3108867 (State or Other Jurisdiction of Incorporation) (Commission Fil

September 29, 2023 8-K

Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): September 26, 2023 Casa Systems, Inc. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-38324 75-3108867 (State or Other Jurisdiction of Incorporation) (Commission F

September 1, 2023 EX-99.1

CASA SYSTEMS, INC. Restricted Stock Unit Agreement Inducement Grant NOTICE OF GRANT

EX-99.1 Exhibit 99.1 CASA SYSTEMS, INC. Restricted Stock Unit Agreement Inducement Grant NOTICE OF GRANT This Restricted Stock Unit Agreement (this “Agreement”) is made as of the Agreement Date between Casa Systems, Inc. (the “Company”), a Delaware corporation, and the individual named on the signature page hereto (the “Grantee”). I. Agreement Date Date: II. Grantee Information Grantee: Grantee Ad

September 1, 2023 S-8

As filed with the United States Securities and Exchange Commission on September 1, 2023

S-8 As filed with the United States Securities and Exchange Commission on September 1, 2023 Registration No.

September 1, 2023 EX-FILING FEES

Calculation of Filing Fee Tables Form S-8 Casa Systems, Inc. (Exact Name of Registrant as Specified in its Security Type Security Class Title Fee Calculation Rule Amount Registered(1) Proposed Maximum Offering Price Per Unit(3) Maximum Aggregate Offe

EX-FILING FEES Exhibit 107 Calculation of Filing Fee Tables Form S-8 (Form Type) Casa Systems, Inc.

August 16, 2023 CORRESP

August 16, 2023

August 16, 2023 Via EDGAR Transmission United States Securities and Exchange Commission Division of Corporation Finance 100 F Street, N.

August 10, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 5, 2023 Casa Systems, Inc.

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, 2023 Casa Systems, Inc. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-38324 75-3108867 (State or Other Jurisdiction of Incorporation) (Commission File

August 10, 2023 EX-10.1

100 Old River Road | Andover, MA 01810 | 978-688-6706 | www.casa-systems.com

EX-10.1 Exhibit 10.1 August 4, 2023 Philip E. Paro, Jr. [***] Dear Phil, On behalf of Casa Systems, Inc., I am pleased to conditionally offer you employment with the Company: 1. Your initial position will be Vice President and Chief Accounting Officer effective September 5, 2023. In this role, you will initially report to Edward Durkin, CFO. This is a regular, full-time position and will be respon

August 8, 2023 EX-FILING FEES

Calculation of Filing Fee Tables Form S-3 (Form Type) Casa Systems, Inc. (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered and Carry Forward Securities

EX-FILING FEES Exhibit 107 Calculation of Filing Fee Tables Form S-3 (Form Type) Casa Systems, Inc.

August 8, 2023 EX-10.2

100 Old River Road | Andover, MA 01810 | 978-688-6706 | www.casa-systems.com

Exhibit 10.2 May 12, 2023 Edward Durkin [ ] We are pleased to inform you that you have been selected to receive a retention award. Your skills and capabilities play a critical role in Casa’s success, and we want to ensure your continued focus on Casa’s goals and objectives. In exchange for your agreement to do so and the continued performance of your duties in accordance with the expected standard

August 8, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 8, 2023 Casa Systems, Inc.

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 8, 2023 Casa Systems, Inc. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-38324 75-3108867 (State or Other Jurisdiction of Incorporation) (Commission File

August 8, 2023 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, 2023 OR ☐ 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: 001-38324 Casa Sys

August 8, 2023 S-3

As filed with the Securities and Exchange Commission on August 8, 2023

S-3 Table of Contents As filed with the Securities and Exchange Commission on August 8, 2023 Registration No.

August 8, 2023 EX-1.2

CASA SYSTEMS, INC. EQUITY DISTRIBUTION AGREEMENT

Exhibit 1.2 CASA SYSTEMS, INC. EQUITY DISTRIBUTION AGREEMENT August 8, 2023 PIPER SANDLER & CO. U.S. Bancorp Center 800 Nicollet Mall Minneapolis, Minnesota 55402 Ladies and Gentlemen: As further set forth in this agreement (this “Agreement”), Casa Systems, Inc., a company organized under the laws of Delaware (the “Company”), proposes to issue and sell from time to time through Piper Sandler & Co.

August 8, 2023 EX-99.1

Casa Systems Reports Second Quarter 2023 Financial Results Second Quarter Revenue Increases 28% Over Prior Quarter Cable Revenue Improves by 79% From Prior Quarter Working Capital Position Substantially Improves Current Deferred Revenue Position Up $

Exhibit 99.1 Casa Systems Reports Second Quarter 2023 Financial Results Second Quarter Revenue Increases 28% Over Prior Quarter Cable Revenue Improves by 79% From Prior Quarter Working Capital Position Substantially Improves Current Deferred Revenue Position Up $22 Million Since Year End Successfully Refinanced Term Loan B in June 2023 Positive Q2 Operating Cash Flow Results of $4.4 Million Revise

August 1, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 27, 2023 Casa Systems, Inc.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 27, 2023 Casa Systems, Inc. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-38324 75-3108867 (State or Other Jurisdiction of Incorporation) (Commission File N

July 31, 2023 EX-99.1

CASA SYSTEMS, INC. Restricted Stock Unit Agreement Inducement Grant NOTICE OF GRANT

EX-99.1 Exhibit 99.1 CASA SYSTEMS, INC. Restricted Stock Unit Agreement Inducement Grant NOTICE OF GRANT This Restricted Stock Unit Agreement (this “Agreement”) is made as of the Agreement Date between Casa Systems, Inc. (the “Company”), a Delaware corporation, and the individual named on the signature page hereto (the “Grantee”). I. Agreement Date Date: II. Grantee Information Grantee: Grantee Ad

July 31, 2023 EX-FILING FEES

Calculation of Filing Fee Tables From S-8 (Form Type) Casa Systems, Inc. (Exact Name of Registrant as Specified in its Charter) Security Type Security Class Title Fee Calculation Rule Amount Registered(1) Proposed Maximum Offering Price Per Unit(3) M

EX-FILING FEES Exhibit 107 Calculation of Filing Fee Tables From S-8 (Form Type) Casa Systems, Inc.

July 31, 2023 S-8

As filed with the United States Securities and Exchange Commission on July 31, 2023

S-8 As filed with the United States Securities and Exchange Commission on July 31, 2023 Registration No.

July 27, 2023 CORRESP

July 27, 2023

July 27, 2023 Via EDGAR Transmission United States Securities and Exchange Commission Division of Corporation Finance 100 F Street, N.

July 21, 2023 EX-FILING FEES

Calculation of Filing Fee Tables Form S-3 (Form Type) Casa Systems, Inc. (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered and Carry Forward Securities

EX-FILING FEES Exhibit 107 Calculation of Filing Fee Tables Form S-3 (Form Type) Casa Systems, Inc.

July 21, 2023 S-3

As filed with the Securities and Exchange Commission on July 21, 2023

S-3 Table of Contents As filed with the Securities and Exchange Commission on July 21, 2023 Registration No.

July 13, 2023 EX-99.1

Casa Systems Names Michael Glickman as Next President and Chief Executive Officer Glickman brings over 35 years of telecom and technology global sales leadership and major partnership experience to lead Casa Systems’ growth strategy

EX-99.1 Exhibit 99.1 Casa Systems Names Michael Glickman as Next President and Chief Executive Officer Glickman brings over 35 years of telecom and technology global sales leadership and major partnership experience to lead Casa Systems’ growth strategy ANDOVER, Mass., July 13, 2023 — Casa Systems, Inc. (NASDAQ: CASA), a leading provider of cloud-native software and physical broadband technology s

July 13, 2023 EX-10.1

Casa Systems Inc.• 100 Old River Road• Andover, Massachusetts 01810

EX-10.1 Exhibit 10.1 ● July 7, 2023 Mr. Michael Glickman [ * * * ] [ * * * ] Dear Michael, I am pleased to confirm the offer for you to join Casa Systems, Inc. (the “Company”), in the position of Chief Executive Officer (CEO) at our Corporate Headquarters located in Andover, MA. This is a full-time, regular position, reporting to the Board of Directors of the Company (the “Board”) that will begin

July 13, 2023 EX-10.2

CASA SYSTEMS, INC. EXECUTIVE OFFICER SEVERANCE AND CHANGE IN CONTROL POLICY

EX-10.2 Exhibit 10.2 Final CASA SYSTEMS, INC. EXECUTIVE OFFICER SEVERANCE AND CHANGE IN CONTROL POLICY 1. Purpose. Casa Systems, Inc. (the “Company”) has adopted this Executive Officer Severance and Change in Control Policy (this “Policy”) as a means to provide certain severance benefits to a Covered Employee who experiences a Termination Event (as defined below). This Policy will be effective as

July 13, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 7, 2023 Casa Systems, Inc. (

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 7, 2023 Casa Systems, Inc. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-38324 75-3108867 (State or Other Jurisdiction of Incorporation) (Commission File Nu

June 21, 2023 EX-10.5

REGISTRATION RIGHTS AGREEMENT

EX-10.5 Exhibit 10.5 Certain identified information (indicated by “[***]”) has been excluded from this exhibit because it is both not material and would likely cause competitive harm to the registrant if publicly disclosed. REGISTRATION RIGHTS AGREEMENT This Registration Rights Agreement (the “Agreement”) is made and entered into as of June 15, 2023 by and among Casa Systems, Inc., a Delaware corp

June 21, 2023 EX-10.1

EXCHANGE AGREEMENT by and among CASA SYSTEMS, INC., THE LENDERS LISTED ON THE SIGNATURE PAGES HERETO, AND THE OTHER PARTIES HERETO Dated as of June 15, 2023

EX-10.1 Exhibit 10.1 Certain identified information (indicated by “[***]”) has been excluded from this exhibit because it is both not material and would likely cause competitive harm to the registrant if publicly disclosed. EXCHANGE AGREEMENT by and among CASA SYSTEMS, INC., THE LENDERS LISTED ON THE SIGNATURE PAGES HERETO, AND THE OTHER PARTIES HERETO Dated as of June 15, 2023 EXCHANGE AGREEMENT

June 21, 2023 EX-10.4

WARRANT AGREEMENT CASA SYSTEMS, INC. AMERICAN STOCK TRANSFER & TRUST COMPANY, LLC Dated June 15, 2023

EX-10.4 Exhibit 10.4 Execution Version CONFIDENTIAL WARRANT AGREEMENT CASA SYSTEMS, INC. and AMERICAN STOCK TRANSFER & TRUST COMPANY, LLC Dated June 15, 2023 This WARRANT AGREEMENT (this “Agreement”), dated as of June 15, 2023, is by and between Casa Systems, Inc., a Delaware corporation (the “Company”), and American Stock Transfer & Trust Company, LLC, a New York limited liability company, as war

June 21, 2023 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): June 15, 2023

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): June 15, 2023 Casa Systems, Inc. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-38324 75-3108867 (State or Other Jurisdiction of Incorporation

June 21, 2023 EX-10.2

FIRST AMENDMENT

EX-10.2 Exhibit 10.2 EXECUTION VERSION FIRST AMENDMENT FIRST AMENDMENT, dated as of June 15, 2023 (this “Amendment”), among Casa Systems, Inc. (the “Borrower”), the guarantors listed on the signature pages hereto, the Lenders (as defined below) party hereto and JPMorgan Chase Bank, N.A., as administrative agent (in such capacity, the “Administrative Agent”) and as collateral agent (in such capacit

June 21, 2023 EX-99.1

Casa Systems Announces Successful Completion of Previously Announced Refinancing and Extension Transaction for its Term Loan B Senior Secured Debt

EX-99.1 Exhibit 99.1 FOR IMMEDIATE RELEASE Casa Systems Announces Successful Completion of Previously Announced Refinancing and Extension Transaction for its Term Loan B Senior Secured Debt • Extends Scheduled Maturity Date to December 2027 • Provides Financial Flexibility to Execute on Growth Strategy, Operational Enhancements, and Strategic Initiatives ANDOVER, Mass., June 15, 2023 — Casa System

June 21, 2023 EX-10.3

SUPERPRIORITY CREDIT AGREEMENT Dated as of June 15, 2023 CASA SYSTEMS, INC., as the Borrower, JPMORGAN CHASE BANK, N.A., as Administrative Agent, DELAWARE TRUST COMPANY, as Collateral Agent JPMORGAN CHASE BANK, N.A., as Lead Arranger and as Bookrunne

EX-10.3 Exhibit 10.3 Certain identified information (indicated by “[***]”) has been excluded from this exhibit because it is both not material and would likely cause competitive harm to the registrant if publicly disclosed. SUPERPRIORITY CREDIT AGREEMENT Dated as of June 15, 2023 among CASA SYSTEMS, INC., as the Borrower, JPMORGAN CHASE BANK, N.A., as Administrative Agent, and DELAWARE TRUST COMPA

June 16, 2023 EX-99.1

Casa Systems Announces Successful Completion of Previously Announced Refinancing and Extension Transaction for its Term Loan B Senior Secured Debt

EX-99.1 Exhibit 99.1 FOR IMMEDIATE RELEASE Casa Systems Announces Successful Completion of Previously Announced Refinancing and Extension Transaction for its Term Loan B Senior Secured Debt • Extends Scheduled Maturity Date to December 2027 • Provides Financial Flexibility to Execute on Growth Strategy, Operational Enhancements, and Strategic Initiatives ANDOVER, Mass., June 15, 2023 — Casa System

June 16, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 15, 2023 Casa Systems, Inc.

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 15, 2023 Casa Systems, Inc. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-38324 75-3108867 (State or Other Jurisdiction of Incorporation) (Commission File N

May 30, 2023 SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report CASA SYSTEMS, INC. (Exact name of registrant as specified in its charter)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report CASA SYSTEMS, INC. (Exact name of registrant as specified in its charter) Delaware 001-38324 75-3108867 (State or Other Jurisdiction of Incorporation) (Commission File Number) (IRS Employer Identification No.) 100 Old River Road Andover, Massachusetts (Address of principal executive office

May 18, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 18, 2023 Casa Systems, Inc. (

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 18, 2023 Casa Systems, Inc. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-38324 75-3108867 (State or Other Jurisdiction of Incorporation) (Commission File Nu

May 9, 2023 EX-99

Casa Systems Announces Execution of Transaction Support Agreement to Extend Term Loan B (“TLB”) Debt Maturity to December 2027, with Additional Debt Paydown and Further Favorable De-Levering Results in significant maturity runway to continue to execu

Exhibit 99.1 Casa Systems Announces Execution of Transaction Support Agreement to Extend Term Loan B (“TLB”) Debt Maturity to December 2027, with Additional Debt Paydown and Further Favorable De-Levering Results in significant maturity runway to continue to execute on growth strategy, operational enhancements, and strategic initiatives Represents ~ 60% of Aggregate Principal Amount of Current TLB

May 9, 2023 EX-10

Separation Agreement by and between the Company and Jerry Guo, dated as of March 13, 2023.

Exhibit 10.1 March 10, 2023 Jerry Guo [ ] Re: Separation Agreement Dear Jerry: This letter confirms your separation from employment with Casa Systems, Inc. (the “Company”), effective as of March 17, 2023 (the “Separation Date”). Regardless of whether you sign this Agreement, the following bulleted terms and conditions apply in connection with your separation from employment: • The Company will (i)

May 9, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 9, 2023 Casa Systems, Inc. (E

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 9, 2023 Casa Systems, Inc. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-38324 75-3108867 (State or Other Jurisdiction of Incorporation) (Commission File Num

May 9, 2023 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 March 31, 2023 OR ☐ 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: 001-38324 Casa Sy

May 9, 2023 EX-99

Casa Systems Reports First Quarter 2023 Financial Results Also Announces Execution of Strategic Term Loan B Transaction Support Agreement to Extend Debt Maturity Reiterates Full Year 2023 Guidance

Exhibit 99.2 Casa Systems Reports First Quarter 2023 Financial Results Also Announces Execution of Strategic Term Loan B Transaction Support Agreement to Extend Debt Maturity Reiterates Full Year 2023 Guidance Andover, Mass. – May 9, 2023 – Casa Systems, Inc. (Nasdaq: CASA), a leading provider of cloud-native software and physical broadband technology solutions for access, cable, and cloud, today

May 9, 2023 EX-10

Transaction Support Agreement dated May 8, 2023, by and among Casa Systems, Inc. and certain other persons party thereto**

EX-10 2 casa-ex104.htm EX-10.4 Exhibit 10.4 Certain identified information (indicated by “[***]”) has been excluded from this exhibit because it is both not material and would likely cause competitive harm to the registrant if publicly disclosed. TRANSACTION SUPPORT AGREEMENT This Transaction Support Agreement (together with the exhibits, annexes, and schedules attached hereto, this “Agreement”),

April 13, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 7, 2023 Casa Systems, Inc.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 7, 2023 Casa Systems, Inc. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-38324 75-3108867 (State or Other Jurisdiction of Incorporation) (Commission File N

April 6, 2023 DEF 14A

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. )

DEF 14A 1 casa-2023proxy-v2.htm DEF 14A 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 (a

April 6, 2023 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. )

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 15, 2023 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 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, 2022 OR ☐ 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 001-38324 Casa Systems, I

March 15, 2023 EX-21

Subsidiaries of the Registrant

Exhibit 21.1 Subsidiaries of Casa Systems, Inc. Name of Subsidiary Jurisdiction of Incorporation or Organization Casa Communications Limited Ireland Casa Communications Technology S.L. Spain Casa Properties LLC Delaware Casa Systems B.V. Netherlands Casa Systems Canada Ltd. Ontario, Canada Casa Systems SAS France Casa Systems Securities Corporation Massachusetts Guangzhou Casa Communications Ltd C

March 14, 2023 EX-99

Casa Systems Announces CEO Transition and Reports Fourth Quarter and Full Year 2022 Financial Results Jerry Guo to Retire as President and CEO, Remains on Casa Board of Directors Bruce Evans Appointed New Chairman of Expanded Board of Directors Scott

Exhibit 99.1 Casa Systems Announces CEO Transition and Reports Fourth Quarter and Full Year 2022 Financial Results Jerry Guo to Retire as President and CEO, Remains on Casa Board of Directors Bruce Evans Appointed New Chairman of Expanded Board of Directors Scott Bruckner Joins the Board of Directors Q4 Revenue of $84.4 Million Slightly Exceeds High End of Preliminary Guidance GAAP Net Income of $

March 14, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 14, 2023 Casa Systems, Inc.

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 14, 2023 Casa Systems, Inc. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-38324 75-3108867 (State or Other Jurisdiction of Incorporation) (Commission File

February 14, 2023 SC 13G/A

CASA / Casa Systems Inc / ALLIANCEBERNSTEIN L.P. - SEC SCHEDULE 13G Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 1 )* Casa Systems Inc (Name of Issuer) Common Stock (Title of Class of Securities) 14713L102 (CUSIP Number) December 31, 2022 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this Sched

January 31, 2023 EX-99.1

Casa Systems Provides Business Update and Preliminary Fourth Quarter Revenue Results Expects to report revenue results for Q4 2022 in the $83- $84M range (unaudited), up approximately 25% over Q3 2022 Results driven by growth in Cable and Access Devi

Exhibit 99.1 Casa Systems Provides Business Update and Preliminary Fourth Quarter Revenue Results Expects to report revenue results for Q4 2022 in the $83- $84M range (unaudited), up approximately 25% over Q3 2022 Results driven by growth in Cable and Access Device revenues Andover, Mass. – January 31, 2023 – Casa Systems, Inc. (Nasdaq: CASA) today pre-announced that the Company expects to report

January 31, 2023 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): January 31, 2023 Casa Systems, Inc. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-38324 75-3108867 (State or Other Jurisdiction of Incorporation) (Commission Fil

December 5, 2022 EX-99.1

Casa Systems Co-Founder and Senior Vice President of Operations Lucy Xie announces retirement

Exhibit 99.1 NEWS RELEASE Casa Systems Co-Founder and Senior Vice President of Operations Lucy Xie announces retirement ANDOVER, Mass., December 5, 2022 ? Casa Systems (Nasdaq: CASA), a leading provider of cloud-native software and physical broadband technology solutions for wireless, cable and fixed networks, announced today that Lucy Xie, a co-founder and current Senior Vice President of Operati

December 5, 2022 EX-10.1

Separation Agreement, executed on November 29, 2022, by and between the Company and Lucy Xie

Exhibit 10.1 Lucy Xie [***] [***] Re: Separation Agreement Dear Lucy: This letter confirms your separation from employment with Casa Systems, Inc. (the ?Company?), effective as of the completion of your last day of employment, December 31, 2022 (the ?Separation Date?). Regardless of whether you sign this Agreement, the following bulleted terms and conditions apply in connection with your separatio

December 5, 2022 8-K

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

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 29, 2022 Casa Systems, Inc. (Exact name of registrant as specified in its charter) Delaware 001-38324 75-3108867 (State or other jurisdiction of incorporation) (Commission Fi

November 9, 2022 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, 2022 OR ? 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: 001-38324 Cas

November 3, 2022 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 3, 2022 Casa Systems, In

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 3, 2022 Casa Systems, Inc. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-38324 75-3108867 (State or Other Jurisdiction of Incorporation) (Commission Fil

November 3, 2022 EX-99.1

Casa Systems Reports Third Quarter 2022 Financial Results Continued Progress in Cloud-Native 5G Market Access with Google Cloud Partnership Execution on Deleveraging Plan with Reduction of Senior Debt by $41.7 million on November 2 Positive Operating

Exhibit 99.1 Casa Systems Reports Third Quarter 2022 Financial Results Continued Progress in Cloud-Native 5G Market Access with Google Cloud Partnership Execution on Deleveraging Plan with Reduction of Senior Debt by $41.7 million on November 2 Positive Operating Cash Flow and Strong Cash Position Cable Revenue Increased 20% Sequentially Andover, Mass. – November 3, 2022 – Casa Systems, Inc. (Nasd

August 4, 2022 EX-99.1

Casa Systems Reports Second Quarter 2022 Financial Results Verizon Multi-Year Agreement Progressing on Schedule 5G Cloud-Native Solutions Gain Additional Traction with Tier 1 CSPs Strong Bookings and Billings During Quarter Revenue up 10% Sequentiall

Exhibit 99.1 Casa Systems Reports Second Quarter 2022 Financial Results Verizon Multi-Year Agreement Progressing on Schedule 5G Cloud-Native Solutions Gain Additional Traction with Tier 1 CSPs Strong Bookings and Billings During Quarter Revenue up 10% Sequentially Over Q1 Backlog and Deferred Revenue Continues to Grow Andover, Mass. ? August 4, 2022 ? Casa Systems, Inc. (Nasdaq: CASA), a leading p

August 4, 2022 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, 2022 OR ? 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: 001-38324 Casa Sys

August 4, 2022 EX-10.1

Form of Restricted Stock Unit Agreement under 2017 Stock Incentive Plan

Form with Full Acceleration Upon Qualifying Termination Exhibit 10.1 CASA SYSTEMS, INC. Restricted Stock Unit Agreement 2017 Stock Incentive Plan NOTICE OF GRANT This Restricted Stock Unit Agreement (this ?Agreement?) is made as of the Agreement Date between Casa Systems, Inc. (the ?Company?), a Delaware corporation, and the Participant. I. Agreement Date Date: II. Participant Information Particip

August 4, 2022 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 4, 2022 Casa Systems, Inc. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-38324 75-3108867 (State or Other Jurisdiction of Incorporation) (Commission File

June 28, 2022 CORRESP

June 28, 2022

June 28, 2022 Division of Corporation Finance United States Securities and Exchange Commission 460 Fifth Street, NW Washington, D.

June 7, 2022 CORRESP

June 7, 2022

June 7, 2022 Division of Corporation Finance United States Securities and Exchange Commission 460 Fifth Street, NW Washington, D.

May 31, 2022 SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report CASA SYSTEMS, INC. (Exact name of registrant as specified in its charter)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report CASA SYSTEMS, INC. (Exact name of registrant as specified in its charter) Delaware 001-38324 75-3108867 (State or Other Jurisdiction of Incorporation) (Commission File Number) (IRS Employer Identification No.) 100 Old River Road Andover, Massachusetts (Address of principal executive office

May 23, 2022 CORRESP

May 23, 2022

May 23, 2022 Via EDGAR Transmission United States Securities and Exchange Commission Division of Corporation Finance 100 F Street, N.

May 17, 2022 EX-FILING FEES

Filing Fee Table

Exhibit 107 Calculation of Filing Fee Tables Form S-3 (Form Type) Casa Systems, Inc.

May 17, 2022 S-3

As filed with the Securities and Exchange Commission on May 17, 2022.

Table of Contents As filed with the Securities and Exchange Commission on May 17, 2022.

May 12, 2022 8-K

Submission of Matters to a Vote of Security Holders

1 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 12, 2022 Casa Systems, Inc. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-38324 75-3108867 (State or Other Jurisdiction of Incorporation) (Commission File

May 4, 2022 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 March 31, 2022 OR ? 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: 001-38324 Casa Sy

May 4, 2022 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

1 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 4, 2022 Casa Systems, Inc. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-38324 75-3108867 (State or Other Jurisdiction of Incorporation) (Commission File N

May 4, 2022 EX-99.1

Casa Systems Reports First Quarter 2022 Financial Results Company Accelerates Transformation as a Leader in Cloud-Native Software with Verizon Agreement Reports Revenue of $64.4 million Total Backlog Increased, Sales Pipeline Growing Temporarily Susp

Exhibit 99.1 Casa Systems Reports First Quarter 2022 Financial Results Company Accelerates Transformation as a Leader in Cloud-Native Software with Verizon Agreement Reports Revenue of $64.4 million Total Backlog Increased, Sales Pipeline Growing Temporarily Suspending Fiscal Year 2022 Guidance Andover, Mass. ? May 4, 2022 ? Casa Systems, Inc. (Nasdaq: CASA), a leading provider of cloud-native sof

April 22, 2022 SC 13G

CASA / Casa Systems Inc / Verizon Communications Inc - SC 13G Passive Investment

SC 13G 1 d142101dsc13g.htm SC 13G UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 CASA SYSTEMS, INC. (Name of Issuer) Common Stock, par value $0.001 per share (Title of Class of Securities) 14713L102 (CUSIP Number) April 18, 2022 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to design

April 22, 2022 EX-99.I

AGREEMENT JOINT FILING OF SCHEDULE 13G

EX-99.I Exhibit I AGREEMENT JOINT FILING OF SCHEDULE 13G Each of the undersigned hereby agrees to file jointly the Schedule 13G to which this Agreement is attached, and any amendments to the Schedule 13G (the “Schedule 13G”) filed with respect to the common stock, par value $0.001 per share, of Casa Systems, Inc. which may be deemed necessary, pursuant to Regulation 13D-G under the Securities Exch

April 18, 2022 EX-10.1

Securities Purchase Agreement, dated as of April 18, 2022, among Casa Systems, Inc. and Verizon Ventures LLC

Exhibit 10.1 EXECUTION VERSION SECURITIES PURCHASE AGREEMENT This Securities Purchase Agreement (this ?Agreement?) is dated as of April 18, 2022 (the ?Effective Date?), among Casa Systems, Inc., a Delaware corporation (the ?Company?), and Verizon Ventures LLC, a Delaware limited liability (the ?Purchaser?). WHEREAS, the Company and the Purchaser are executing and delivering this Agreement in relia

April 18, 2022 8-K

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

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 18, 2022 Casa Systems, Inc. (Exact name of registrant as specified in its charter) Delaware 001-38324 75-3108867 (State or other jurisdiction of incorporation) (Commission File

April 18, 2022 EX-99.1

CASA SYSTEMS AWARDED MULTI-YEAR CONTRACT FROM VERIZON Casa Systems to provide its 5G Core Network Functions to help enable Verizon’s public Mobile Edge Computing service offering Verizon to make ~$40 million equity investment in Casa Common Stock

Exhibit 99.1 NEWS RELEASE CASA SYSTEMS AWARDED MULTI-YEAR CONTRACT FROM VERIZON Casa Systems to provide its 5G Core Network Functions to help enable Verizon?s public Mobile Edge Computing service offering Verizon to make ~$40 million equity investment in Casa Common Stock ANDOVER, Mass. ? April 18, 2022 ? Casa Systems, Inc. (Nasdaq: CASA), a leading provider of physical and cloud-native infrastruc

April 1, 2022 DEF 14A

definitive proxy statement

DEF 14A 1 casa-def14a20220512.htm DEF 14A 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

April 1, 2022 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. )

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 24, 2022 EX-10.1

Offer Letter, dated March 2, 2022, by and between the Registrant and Ed Durkin

Exhibit 10.1 March 2, 2022 Edward Durkin 4 Mary Ellen Lane Franklin, MA 02038 Dear Ed, On behalf of Casa Systems, Inc. (the ?Company?), I am pleased to set forth the terms of your employment with the Company: 1. You will be hired on a regular, full-time basis commencing March 14, 2022, and your role as Chief Financial Officer will be effective April 4, 2022. As a key contributor, you will report t

March 24, 2022 EX-99.1

Casa Systems Appoints Edward Durkin as Chief Financial Officer Durkin brings more than 30 years of financial expertise in the Technology/Software sector to Casa

Exhibit 99.1 NEWS RELEASE Casa Systems Appoints Edward Durkin as Chief Financial Officer Durkin brings more than 30 years of financial expertise in the Technology/Software sector to Casa ANDOVER, Mass. ? March 24, 2022 ? Casa Systems, Inc. (Nasdaq: CASA), a leading provider of cloud-native software and physical technology solutions for wireless, cable and fixed broadband networks, today announced

March 24, 2022 8-K

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

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 24, 2022 Casa Systems, Inc. (Exact name of registrant as specified in its charter) Delaware 001-38324 75-3108867 (State or other jurisdiction of incorporation) (Commission File

February 25, 2022 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 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, 2021 OR ? 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 001-38324 Casa Systems, I

February 25, 2022 EX-21.1

Subsidiaries of the Registrant

Exhibit 21.1 Subsidiaries of Casa Systems, Inc. Name of Subsidiary Jurisdiction of Incorporation or Organization Casa Communications Limited Ireland Casa Communications Technology S.L. Spain Casa Properties LLC Delaware Casa Systems B.V. Netherlands Casa Systems Canada Ltd. Ontario, Canada Casa Systems SAS France Casa Systems Securities Corporation Massachusetts Guangzhou Casa Communications Ltd.

February 24, 2022 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

1 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 24, 2022 Casa Systems, Inc. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-38324 75-3108867 (State or Other Jurisdiction of Incorporation) (Commission

February 24, 2022 EX-99.1

Casa Systems Reports Fourth Quarter 2021 and Full Year 2021 Financial Results Double Digit Q4 and Full Year Wireless Growth Full Year Revenue Growth Despite Supply Chain Impact Company Guides to Significant Software and Margin Increase in FY 2022

Exhibit 99.1 Casa Systems Reports Fourth Quarter 2021 and Full Year 2021 Financial Results Double Digit Q4 and Full Year Wireless Growth Full Year Revenue Growth Despite Supply Chain Impact Company Guides to Significant Software and Margin Increase in FY 2022 Andover, Mass. ? February 24, 2022 ? Casa Systems, Inc. (Nasdaq: CASA), a leading provider of cloud-native software and physical broadband t

February 14, 2022 SC 13G

CASA / Casa Systems Inc / ALLIANCEBERNSTEIN L.P. Passive Investment

SC 13G 1 Casa.htm UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. )* Casa Systems Inc (Name of Issuer) Common Stock (Title of Class of Securities) 14713L102 (CUSIP Number) December 31, 2021 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to

January 26, 2022 8-K

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

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 21, 2022 Casa Systems, Inc. (Exact name of registrant as specified in its charter) Delaware 001-38324 75-3108867 (State or other jurisdiction of incorporation) (Commission Fil

January 26, 2022 EX-99.1

Casa Systems Announces Departure of Chief Financial Officer Reaffirms FY 2021 Guidance and Announces Earnings Release Date

Exhibit 99.1 NEWS RELEASE Casa Systems Announces Departure of Chief Financial Officer Reaffirms FY 2021 Guidance and Announces Earnings Release Date ANDOVER, Mass. ? January 26, 2022 ? Casa Systems, Inc. (Nasdaq: CASA), a leading provider of physical and cloud-native infrastructure technology solutions for wireless, cable and fixed broadband networks, today announced that Scott Bruckner will be re

November 19, 2021 EX-99.1

Casa Systems Announces Multi-Year Transformation Toward Software and Cloud at Investor Day

Exhibit 99.1 Casa Systems Announces Multi-Year Transformation Toward Software and Cloud at Investor Day Andover, Mass. ? November 19, 2021 ? Casa Systems, Inc. (Nasdaq: CASA) a leading provider of cloud-native and physical infrastructure technology solutions for wireless, cable and fixed broadband networks, will host its 2021 Virtual Investor Day today. The event can be found at https://investors.

November 19, 2021 8-K

Regulation FD Disclosure, Financial Statements and Exhibits

1 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 19, 2021 Casa Systems, Inc. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-38324 75-3108867 (State or Other Jurisdiction of Incorporation) (Commission

November 19, 2021 EX-99.2

Safe Harbor These slides and the accompanying oral presentation contain forward-looking statements. All statements other than statements of historical fact contained in this presentation, including statements regarding the projected results of operat

Casa Systems Investor Day November 19, 2021 Exhibit 99.2 Safe Harbor These slides and the accompanying oral presentation contain forward-looking statements. All statements other than statements of historical fact contained in this presentation, including statements regarding the projected results of operations and financial position of Casa, including financial targets, business strategy, and plan

November 2, 2021 EX-99.1

Casa Systems Reports Third Quarter 2021 Financial Results Wireless Growth of 51% year-over-year $11 Million Impact from Supply Chain Constraints Revising Full-Year 2021 Guidance

Exhibit 99.1 Casa Systems Reports Third Quarter 2021 Financial Results Wireless Growth of 51% year-over-year $11 Million Impact from Supply Chain Constraints Revising Full-Year 2021 Guidance Andover, Mass. ? November 2, 2021 ? Casa Systems, Inc. (Nasdaq: CASA), a leading provider of cloud-native software and physical broadband technology solutions for wireless, cable and fixed networks, today anno

November 2, 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 OR ? 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: 001-38324 Cas

November 2, 2021 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

1 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 2, 2021 Casa Systems, Inc. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-38324 75-3108867 (State or Other Jurisdiction of Incorporation) (Commission F

July 30, 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 OR ? 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: 001-38324 Casa Sys

July 29, 2021 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

1 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 29, 2021 Casa Systems, Inc. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-38324 75-3108867 (State or Other Jurisdiction of Incorporation) (Commission File

July 29, 2021 EX-99.1

Casa Systems Reports Second Quarter 2021 Financial Results Double-digit Revenue Growth Driven by Strong Wireless Demand Wireless Backlog Growth of 63%, year-over-year EBITDA Growth of 25%, year-over-year Reaffirming 2021 Guidance

Exhibit 99.1 Casa Systems Reports Second Quarter 2021 Financial Results Double-digit Revenue Growth Driven by Strong Wireless Demand Wireless Backlog Growth of 63%, year-over-year EBITDA Growth of 25%, year-over-year Reaffirming 2021 Guidance Andover, Mass. ? July 29, 2021 ? Casa Systems, Inc. (Nasdaq: CASA), a leading provider of cloud-native software and physical broadband technology solutions f

May 28, 2021 SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report CASA SYSTEMS, INC. (Exact name of registrant as specified in its charter)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report CASA SYSTEMS, INC. (Exact name of registrant as specified in its charter) Delaware 001-38324 75-3108867 (State or Other Jurisdiction of Incorporation) (Commission File Number) (IRS Employer Identification No.) 100 Old River Road Andover, Massachusetts (Address of principal executive office

May 13, 2021 8-K

Submission of Matters to a Vote of Security Holders

1 UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 13, 2021 Casa Systems, Inc. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-38324 75-3108867 (State or Other Jurisdiction of Incorporation) (Commission File

April 30, 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 OR ? 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: 001-38324 Casa Sy

April 30, 2021 EX-10.1

Employment Agreement, dated April 28, 2021, by and between the Registrant and Scott Bruckner

Exhibit 10.1 EMPLOYMENT AGREEMENT This Employment Agreement (the ?Agreement?), effective April 28, 2021 (the ?Effective Date?), is made and entered into by and between Casa Systems, Inc. (the ?Company?), and Scott Bruckner (the ?Executive?). RECITALS WHEREAS, the Company desires to continue to employ the Executive as its Chief Financial Officer; and WHEREAS, the Executive has agreed to accept such

April 29, 2021 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

1 UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 29, 2021 Casa Systems, Inc. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-38324 75-3108867 (State or Other Jurisdiction of Incorporation) (Commission Fil

April 29, 2021 EX-99.1

Casa Systems Reports First Quarter 2021 Financial Results Double-digit Revenue Growth, year-over-year Record Wireless Revenue Growth, year-over-year Wireless Backlog Growth of 427%, year-over-year Reaffirm 2021 Guidance Reflecting Double-Digit Top-Li

Exhibit 99.1 Casa Systems Reports First Quarter 2021 Financial Results Double-digit Revenue Growth, year-over-year Record Wireless Revenue Growth, year-over-year Wireless Backlog Growth of 427%, year-over-year Reaffirm 2021 Guidance Reflecting Double-Digit Top-Line and EBITDA Growth Andover, Mass. ? April 29, 2021 ? Casa Systems, Inc. (Nasdaq: CASA), a leading provider of physical and cloud-native

April 1, 2021 DEF 14A

- CASA-2021-DEF14A

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 1, 2021 DEFA14A

- CASA-2021-DEFA14A

DEFA14A 1 casa-defa14a20210513.htm CASA-2021-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 Commi

February 25, 2021 S-8

- S-8

As filed with the Securities and Exchange Commission on February 25, 2021 Registration No.

February 25, 2021 EX-21.1

Subsidiaries of the Registrant

Exhibit 21.1 Subsidiaries of Casa Systems, Inc. Name of Subsidiary Jurisdiction of Incorporation or Organization Casa Communications Limited Ireland Casa Communications Technology S.L. Spain Casa Properties LLC Delaware Casa Systems B.V. Netherlands Casa Systems Canada Ltd. Quebec, Canada Casa Systems SAS France Casa Systems Securities Corporation Massachusetts Guangzhou Casa Communications Ltd. C

February 25, 2021 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 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 OR ☐ 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 001-38324 Casa Systems, I

February 18, 2021 EX-99.1

Casa Systems Reports Fourth Quarter 2020 and Full Year 2020 Financial Results Full Year Results Exceed Prior Revised Guidance Range Record Full Year and Q4 Revenue and Gross Profit Record FY and Q4 Wireless Revenue 2021 Guidance Reflecting Double-Dig

Exhibit 99.1 Casa Systems Reports Fourth Quarter 2020 and Full Year 2020 Financial Results Full Year Results Exceed Prior Revised Guidance Range Record Full Year and Q4 Revenue and Gross Profit Record FY and Q4 Wireless Revenue 2021 Guidance Reflecting Double-Digit Top-Line and EBITDA Growth Andover, Mass. – February 18, 2021 – Casa Systems, Inc. (Nasdaq: CASA), a leading provider of physical and

February 18, 2021 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

1 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 18, 2021 Casa Systems, Inc. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-38324 75-3108867 (State or Other Jurisdiction of Incorporation) (Commission

October 29, 2020 10-Q

Quarterly Report - CASA-10Q-20200930

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 OR ☐ 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: 001-38324 Cas

October 29, 2020 EX-10.1

Lease annexure “A”, dated October 29, 2020, between ESR Investment Nominees 3 (Australia) Pty Limited and NetComm Wireless Pty Ltd

Exhibit 10.1 This is Annexure "A" to the Lease between ESR Investment Nominees 3 (Australia) Pty Limited (ACN 146 630 239) (Landlord) and Netcomm Wireless Pty Ltd ( ACN 002 490 486) (Tenant) in respect of premises Part Folio Identifier 2/1095363 being Level 1, Suite 2.02 and Level 5, 18 - 20 Orion Road, Lane Cove New South Wales Contents 1. Definitions and interpretation 6 2. Rent 13 3. Not used.

October 28, 2020 EX-99.1

Casa Systems Reports Third Quarter 2020 Financial Results Double-Digit Revenue & Gross Profit Growth Record Wireless Backlog of $115 million Increased Cash Flow and Profitability Raising Full Year 2020 Revenue Guidance

EX-99.1 Exhibit 99.1 Casa Systems Reports Third Quarter 2020 Financial Results Double-Digit Revenue & Gross Profit Growth Record Wireless Backlog of $115 million Increased Cash Flow and Profitability Raising Full Year 2020 Revenue Guidance Andover, Mass. – October 28, 2020 – Casa Systems, Inc. (Nasdaq: CASA), a leading provider of physical and cloud-native infrastructure technology solutions for m

October 28, 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): October 28, 2020 Casa Systems, Inc. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-38324 75-3108867 (State or Other Jurisdiction of Incorporation) (Commission Fil

August 27, 2020 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits, Changes in Registrant's Certifying Accountant - 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 24, 2020 Casa Systems, Inc. (Exact Name of Registrant as Specified in its Charter) Delaware 001-38324 75-3108867 (State or Other Jurisdiction of Incorporation) (Commission File

August 27, 2020 EX-16.1

Letter from PricewaterhouseCoopers LLP to the Securities and Exchange Commission, dated August 27, 2020.

EX-16.1 EXHIBIT 16.1 August 27, 2020 Securities and Exchange Commission 100 F Street, N.E. Washington, DC 20549 Commissioners: We have read the statements made by Casa Systems, Inc. (copy attached), which we understand will be filed with the Securities and Exchange Commission, pursuant to Item 4.01 of Form 8-K of Casa Systems, Inc. dated August 24, 2020. We agree with the statements concerning our

July 31, 2020 10-Q

Quarterly Report - CASA SYSTEMS Q2 2020 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 OR ☐ 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: 001-38324 Casa Sys

July 30, 2020 EX-99.1

Casa Systems Reports Second Quarter 2020 Financial Results Continued Strong Top-Line Performance with Significant Increase in Wireless Backlog Generated $15.5 Million in Free Cash Flow and Achieved Operating Income of $1.3 Million

EX-99.1 Exhibit 99.1 Casa Systems Reports Second Quarter 2020 Financial Results Continued Strong Top-Line Performance with Significant Increase in Wireless Backlog Generated $15.5 Million in Free Cash Flow and Achieved Operating Income of $1.3 Million Andover, Mass. – July 30, 2020 – Casa Systems, Inc. (Nasdaq: CASA), a leading provider of physical and cloud-native infrastructure technology soluti

July 30, 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): July 30, 2020 Casa Systems, Inc. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-38324 75-3108867 (State or Other Jurisdiction of Incorporation) (Commission Fi

June 1, 2020 SD

- SD

SD UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report CASA SYSTEMS, INC. (Exact name of registrant as specified in its charter) Delaware 001-38324 75-3108867 (State or Other Jurisdiction of Incorporation) (Commission File Number) (IRS Employer Identification No.) 100 Old River Road Andover, Massachusetts (Address of principal executive off

May 19, 2020 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): May 14, 2020 Casa Systems, Inc. (Exact Name of Registrant as Specified in its Charter) Delaware 001-38324 75-3108867 (State or Other Jurisdiction of Incorporation) (Commission Fil

May 1, 2020 EX-10.3

Form of Performance Restricted Stock Unit Agreement with Partial Acceleration under 2017 Stock Incentive Plan

Exhibit 10.3 Form with Partial Acceleration Upon Qualifying Termination CASA SYSTEMS, INC. Restricted Stock Unit Agreement (Performance Vested) 2017 Stock Incentive Plan NOTICE OF GRANT This Restricted Stock Unit Agreement (this “Agreement”) is made as of the Agreement Date between Casa Systems, Inc. (the “Company”), a Delaware corporation, and the Participant. I.Agreement Date Date: II.Participan

May 1, 2020 EX-10.2

Form of Performance Restricted Stock Unit Agreement with Full Acceleration under 2017 Stock Incentive Plan

Exhibit 10.2 Form with Full Acceleration Upon Qualifying Termination CASA SYSTEMS, INC. Restricted Stock Unit Agreement (Performance Vested) 2017 Stock Incentive Plan NOTICE OF GRANT This Restricted Stock Unit Agreement (this “Agreement”) is made as of the Agreement Date between Casa Systems, Inc. (the “Company”), a Delaware corporation, and the Participant. I.Agreement Date Date: II.Participant I

May 1, 2020 10-Q

Quarterly Report - 10-Q Q1 2020

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 OR ☐ 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: 001-38324 Casa Sy

April 30, 2020 EX-99.1

Casa Systems Reports First Quarter 2020 Financial Results

EX-99.1 Exhibit 99.1 Casa Systems Reports First Quarter 2020 Financial Results Andover, Mass. – April 30, 2020 – Casa Systems, Inc. (Nasdaq:CASA), a leading provider of converged broadband infrastructure technology and access device solutions for mobile, cable and fixed networks, today announced its financial results for its first quarter ended March 31, 2020. First Quarter 2020 Financial Highligh

April 30, 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): April 30, 2020 Casa Systems, Inc. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-38324 75-3108867 (State or Other Jurisdiction of Incorporation) (Commission F

April 14, 2020 DEF 14A

CASA / Casa Systems, Inc. DEF 14A - - DEF 14A

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

February 27, 2020 10-K

CASA / Casa Systems, Inc. 10-K - Annual Report - CASA 10K FOR THE YEAR ENDED 12/31/2019

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 OR ☐ 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 001-38324 Casa Systems, I

February 27, 2020 EX-4.2

Description of Securities of the Registrant

EXHIBIT 4.2 DESCRIPTION OF SECURITIES REGISTERED UNDER SECTION 12 OF THE EXCHANGE ACT The following description of registered securities of Casa Systems, Inc. (“us,” “our,” “we” or the “Company”) is intended as a summary only and does not purport to be complete. It is subject to and qualified in its entirety by reference to the Company’s Restated Certificate of Incorporation (the “Certificate of I

February 27, 2020 EX-10.28

Offer Letter, dated October 10, 2017, by and between the Registrant and Scott Bruckner

Exhibit 10.28 October 10, 2017 – R1 Mr. Scott Bruckner [ ] Dear Scott, On behalf of Casa Systems, Inc. (the “Company”), I am pleased to set forth the terms of your employment with the Company: 1. You will be employed to serve on a regular, full-time basis as Senior Vice President of Strategy and Corporate Development effective December 4, 2017 Nov. 11, 2017 {SB} In this role, you will initially re

February 27, 2020 EX-21.1

Subsidiaries of the Registrant

Exhibit 21.1 Subsidiaries of Casa Systems, Inc. Name of Subsidiary Jurisdiction of Incorporation or Organization Casa Communications Limited Ireland Casa Communications Technology S.L. Spain Casa Properties LLC Delaware Casa Systems B.V. Netherlands Casa Systems Canada Ltd. Quebec, Canada Casa Systems SAS France Casa Systems Securities Corporation Massachusetts Guangzhou Casa Communication Technol

February 20, 2020 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, 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 20, 2020 Casa Systems, Inc. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-38324 75-3108867 (State or Other Jurisdiction of Incorporation) (Commissio

February 20, 2020 EX-99.1

Casa Systems Reports Fourth Quarter 2019 and Full Year 2019 Financial Results

EX-99.1 Exhibit 99.1 Casa Systems Reports Fourth Quarter 2019 and Full Year 2019 Financial Results Andover, Mass. – February 20, 2020 – Casa Systems, Inc. (Nasdaq:CASA), a leading provider of converged broadband infrastructure technology and access device solutions for mobile, cable and fixed networks, today announced its financial results for its fourth quarter and year ended December 31, 2019. F

January 24, 2020 EX-99.1

Casa Systems Increases GAAP Revenue Guidance for Fiscal Year 2019 and Announces CFO Transition

EX-99.1 Exhibit 99.1 NEWS RELEASE Casa Systems Increases GAAP Revenue Guidance for Fiscal Year 2019 and Announces CFO Transition ANDOVER, Mass., January 24, 2020 (GLOBE NEWSWIRE) – Casa Systems, Inc. (Nasdaq:CASA), a leading provider of converged broadband infrastructure technology solutions for mobile, cable, and fixed networks, today announced that Maurizio Nicolelli, Chief Financial Officer, ha

January 24, 2020 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, 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 20, 2020 Casa Systems, Inc. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-38324 75-3108867 (State or Other Jurisdiction of Incorporation) (Commission

November 5, 2019 10-Q

CASA / Casa Systems, Inc. 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 OR ☐ 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: 001-38324 Cas

October 31, 2019 EX-99.1

Casa Systems Reports Third Quarter 2019 Financial Results

EX-99.1 Exhibit 99.1 Casa Systems Reports Third Quarter 2019 Financial Results Andover, Mass. – October 31, 2019 – Casa Systems, Inc. (Nasdaq:CASA), a leading provider of converged broadband infrastructure technology and access device solutions for mobile, cable and fixed networks, today announced its financial results for its third quarter ended September 30, 2019. Third Quarter 2019 Financial Hi

October 31, 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): October 31, 2019 Casa Systems, Inc. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-38324 75-3108867 (State or Other Jurisdiction of Incorporation) (Commission

September 13, 2019 EX-99.2

Officeholder position

EX-99.2 Exhibit 99.2 NetComm Wireless Limited Consolidated Statement of Profit or Loss and Other Comprehensive Income For the half year ended 31 December 2018 31 Dec 2018 31 Dec 2017 Note $000 $000 Revenue from the sale of goods 94,307 88,580 Change in inventories of finished goods and work in progress 20,464 476 Raw materials consumed (79,014) (56,839) Employee benefits (16,751) (15,385) Administ

September 13, 2019 8-K/A

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

8-K/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K/A CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 1, 2019 Casa Systems, Inc. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-38324 75-3108867 (State or Other Jurisdiction of Incorporation) (Commission

September 13, 2019 EX-99.1

Foreign Currency Translation Reserve

EX-99.1 Exhibit 99.1 NetComm Wireless Limited Index to the financial statements For the Year Ended 30 June 2018 Consolidated Statement of Profit or Loss & Other Comprehensive Income 2 Consolidated Statement of Financial Position 3 Consolidated Statement of Changes in Equity 4 Consolidated Statement of Cash Flows 5 Notes to the financial statements 1. Statement of Significant Accounting Policies 6

September 13, 2019 EX-99.3

CASA SYSTEMS, INC. UNAUDITED PRO FORMA CONDENSED COMBINED FINANCIAL STATEMENTS

EX-99.3 Exhibit 99.3 INDEX TO UNAUDITED PRO FORMA COMBINED FINANCIAL INFORMATION Unaudited Pro Forma Condensed Combined Balance Sheet as of March 31, 2019 Unaudited Pro Forma Condensed Combined Statement of Operations for the twelve months ended December 31, 2018 Unaudited Pro Forma Condensed Combined Statement of Operations for the three months ended March 31, 2019 Notes to Unaudited Pro Forma Co

August 5, 2019 10-Q

CASA / Casa Systems, Inc. 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, 2019 OR ☐ 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: 001-38324 Casa Sys

July 31, 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): July 31, 2019 Casa Systems, Inc. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-38324 75-3108867 (State or Other Jurisdiction of Incorporation) (Commission Fi

July 31, 2019 EX-99.1

Casa Systems Reports Second Quarter 2019 Financial Results

EX-99.1 Exhibit 99.1 Casa Systems Reports Second Quarter 2019 Financial Results Andover, Mass. – July 31, 2019 – Casa Systems, Inc. (Nasdaq:CASA), a leading provider of converged broadband infrastructure technology solutions for mobile, cable and fixed networks, today announced its financial results for its second quarter ended June 30, 2019. Second Quarter 2019 Financial Highlights • Revenue of $

July 1, 2019 8-K

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

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 1, 2019 Casa Systems, Inc. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-38324 75-3108867 (State or Other Jurisdiction of Incorporation) (Commission Fil

July 1, 2019 EX-99.2

Casa Systems Accelerates its Broadband Convergence Strategy with Completion of NetComm Acquisition

EX-99.2 Exhibit 99.2 Casa Systems Accelerates its Broadband Convergence Strategy with Completion of NetComm Acquisition Creates an industry leader in converged broadband solutions for wireless, cable and fixed communication service providers Expands total addressable market to over $25 billion ANDOVER, Mass. – July 1, 2019 – Casa Systems, Inc. (Nasdaq: CASA) a leading provider of converged broadba

May 21, 2019 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): May 16, 2019 Casa Systems, Inc. (Exact Name of Registrant as Specified in its Charter) Delaware 001-38324 75-3108867 (State or Other Jurisdiction of Incorporation) (Commission Fil

May 7, 2019 10-Q

CASA / Casa Systems, Inc. 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 OR ☐ 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: 001-38324 Casa Sy

May 1, 2019 EX-99.1

Casa Systems Reports First Quarter 2019 Financial Results

EX-99.1 Exhibit 99.1 Casa Systems Reports First Quarter 2019 Financial Results Andover, Mass. – May 1, 2019 – Casa Systems, Inc. (Nasdaq:CASA), a leading provider of converged broadband infrastructure technology solutions for mobile, cable and fixed networks, today announced its financial results for its first quarter ended March 31, 2019. First Quarter 2019 Financial Highlights • Revenue of $35.5

May 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): May 1, 2019 Casa Systems, Inc. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-38324 75-3108867 (State or Other Jurisdiction of Incorporation) (Commission File

April 12, 2019 DEF 14A

CASA / Casa Systems, Inc. DEF 14A

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

February 28, 2019 10-K

CASA / Casa Systems, Inc. 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 OR ☐ 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 001-38324 Casa Systems, I

February 28, 2019 EX-10.27

Offer Letter, dated November 19, 2018, by and between the Registrant and Maurizio Nicolelli

Exhibit 10.27 CASA Casa Systems, Inc. 100 Old River Road Andover, MA 01810 Telephone (978) 688-6706 Fax (978) 688-6584 Web http://www.casa-systems.com November 17, 2018 Maurizio Nicolelli [ ] Dear Maurizio, On behalf of Casa Systems, Inc. (the “Company”), I am pleased to set forth the terms of your employment with the Company: 1. You will be employed to serve on a regular, full-time basis as Chief

February 28, 2019 EX-21.1

Subsidiaries of the Registrant

Exhibit 21.1 Subsidiaries of Casa Systems, Inc. Name of Subsidiary Jurisdiction of Incorporation or Organization Casa Communications Limited Ireland Casa Communications Technology S.L. Spain Casa Properties LLC Delaware Casa Systems B.V. Netherlands Casa Systems Canada Ltd. Quebec, Canada Casa Systems SAS France Casa Systems Securities Corporation Massachusetts Guangzhou Casa Communication Technol

February 21, 2019 8-K

Entry into a Material Definitive Agreement, Financial Statements and Exhibits

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 21, 2019 Casa Systems, Inc. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-38324 75-3108867 (State or Other Jurisdiction of Incorporation) (Commissio

February 21, 2019 EX-10.1

Deed, dated as of February 21, 2019, between Casa Systems, Inc. and NetComm Wireless Limited (incorporated by reference to Exhibit 10.1 to the Registrant’s Current Report on Form 8-K (File No. 001-38324) filed on February 21, 2019)

EX-10.1 Exhibit 10.1 Execution version Lawyers Collins Square, Tower Two Level 25, 727 Collins Street Melbourne VIC 3008 Australia Telephone 61 3 9258 3555 Facsimile 61 3 9258 3666 [email protected] www.maddocks.com.au DX 259 Melbourne Scheme Implementation Deed NetComm Wireless Limited ACN 002 490 486 and Casa Systems, Inc. Interstate offices Canberra Sydney Affiliated offices around the world

February 21, 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 21, 2019 Casa Systems, Inc. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-38324 75-3108867 (State or Other Jurisdiction of Incorporation) (Commissio

February 21, 2019 EX-99.1

Casa Systems Reports Fourth Quarter 2018 and Full Year 2018 Financial Results Announces Agreement to Acquire NetComm Wireless

EX-99.1 Exhibit 99.1 Casa Systems Reports Fourth Quarter 2018 and Full Year 2018 Financial Results Announces Agreement to Acquire NetComm Wireless Andover, Mass. – February 21, 2019 – Casa Systems, Inc. (Nasdaq:CASA), a leading provider of converged broadband infrastructure technology solutions for mobile, cable and fixed networks, today announced its financial results for the fourth quarter and y

February 21, 2019 8-K

Regulation FD Disclosure, Financial Statements and Exhibits

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 21, 2019 Casa Systems, Inc. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-38324 75-3108867 (State or Other Jurisdiction of Incorporation) (Commissio

February 21, 2019 EX-99.1

ASX and NASDAQ ANNOUNCEMENT Casa Systems to acquire NetComm Wireless in a recommended transaction

EX-99.1 Exhibit 99.1 ASX and NASDAQ ANNOUNCEMENT Casa Systems to acquire NetComm Wireless in a recommended transaction 22 February 2019 (Sydney): NetComm Wireless Limited (ASX: NTC) (NetComm) and Casa Systems (NASDAQ: CASA) (together with its subsidiaries, Casa Systems) are pleased to announce that they have entered into a definitive agreement under which it is proposed that Casa Systems will acqu

February 13, 2019 EX-99.1

SCHEDULE 13G

SCHEDULE 13G Exhibit 99.1 JOINT FILING AGREEMENT The undersigned hereby agree that the Statement on this Schedule 13G dated February 13, 2019 (the “Schedule 13G”), with respect to the common stock of Casa Systems, Inc. is filed on behalf of each of us pursuant to and in accordance with the provisions of Rule 13d-1(k) under the Securities Exchange Act of 1934, as amended, and that this Agreement sh

February 13, 2019 SC 13G/A

CASA / Casa Systems, Inc. / SUMMIT PARTNERS L P - SC 13G/A Passive Investment

SC 13G/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G/A Information to be Included in Statements Filed Pursuant to Rules 13d-1(b), (c) and (d) and Amendments Thereto Filed Pursuant to Rule 13d-2(b) Under the Securities Exchange Act of 1934 (Amendment No. 1)* Casa Systems, Inc. (Name of Issuer) Common Stock, $0.001 par value (Title of Class of Securities) 147

February 13, 2019 SC 13G

CASA / Casa Systems, Inc. / Liberty Global plc - SCHEDULE 13G Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 Casa Systems, Inc.

January 17, 2019 EX-99.1

Casa Systems Announces Preliminary Fourth Quarter and Full Year 2018 Financial Results

EX-99.1 Exhibit 99.1 Casa Systems Announces Preliminary Fourth Quarter and Full Year 2018 Financial Results Andover, Mass. – January 17, 2019 – Casa Systems, Inc. (Nasdaq:CASA), a leading provider of converged broadband infrastructure technology solutions for mobile, cable and fixed networks, today announced certain preliminary results for the fourth quarter and fiscal year 2018 ended December 31,

January 17, 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): January 17, 2019 Casa Systems, Inc. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-38324 75-3108867 (State or Other Jurisdiction of Incorporation) (Commission

December 17, 2018 8-K

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

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): December 14, 2018 Casa Systems, Inc. (Exact Name of Registrant as Specified in its Charter) Delaware 001-38324 75-3108867 (State or Other Jurisdiction of Incorporation) (Comm

December 10, 2018 8-K

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

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): November 19, 2018 Casa Systems, Inc. (Exact Name of Registrant as Specified in its Charter) Delaware 001-38324 75-3108867 (State or Other Jurisdiction of Incorporation) (Comm

November 30, 2018 8-K

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

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): November 27, 2018 Casa Systems, Inc. (Exact Name of Registrant as Specified in its Charter) Delaware 001-38324 75-3108867 (State or Other Jurisdiction of Incorporation) (Comm

November 8, 2018 10-Q

CASA / Casa Systems, Inc. 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 September 30, 2018 OR ☐ 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: 001-38324 Cas

November 7, 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): November 7, 2018 Casa Systems, Inc. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-38324 75-3108867 (State or Other Jurisdiction of Incorporation) (Commission

November 7, 2018 EX-99.1

Casa Systems Announces Third Quarter 2018 Financial Results

EX-99.1 Exhibit 99.1 Casa Systems Announces Third Quarter 2018 Financial Results • Revenue of $71.5 million increased 4.1% from Q2:18 • Gross margin of 79.6% increased 7.7 percentage points from Q2:18 • Added seven new cable and fixed telco customers during Q3:18 • $94.1 million of net cash provided by operating activities and $87.9 million in free cash flow for the nine months ending September 30

August 14, 2018 EX-99.1

Casa Systems Announces Second Quarter 2018 Financial Results

EX-99.1 Exhibit 99.1 Casa Systems Announces Second Quarter 2018 Financial Results • Revenue of $68.7 million for second quarter of 2018 • GAAP net income of $21.4 million, or $0.23 GAAP diluted net income per share, for the second quarter of 2018 • Non-GAAP net income of $22.2 million, or $0.24 non-GAAP diluted net income per share, for the second quarter of 2018 • 214% revenue increase in softwar

August 14, 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): August 14, 2018 Casa Systems, Inc. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-38324 75-3108867 (State or Other Jurisdiction of Incorporation) (Commission

August 14, 2018 10-Q

CASA / Casa Systems, Inc. 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 OR ☐ 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: 001-38324 Casa Sys

July 11, 2018 8-K

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

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 5, 2018 Casa Systems, Inc. (Exact Name of Registrant as Specified in its Charter) Delaware 001-38324 75-3108867 (State or Other Jurisdiction of Incorporation) (Commission Fil

June 8, 2018 8-K

CASA / Casa Systems, Inc. FORM 8-K (Current Report)

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 6, 2018 Casa Systems, Inc. (Exact Name of Registrant as Specified in its Charter) Delaware 001-38324 75-3108867 (State or Other Jurisdiction of Incorporation) (Commissio

May 25, 2018 DEF 14A

CASA / Casa Systems, Inc. DEF 14A

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

May 11, 2018 10-Q

CASA / Casa Systems, Inc. 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 March 31, 2018 OR ☐ 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: 001-38324 Casa Sy

May 10, 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): May 10, 2018 Casa Systems, Inc. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-38324 75-3108867 (State or Other Jurisdiction of Incorporation) (Commissio

May 10, 2018 EX-99.1

Casa Systems Announces First Quarter 2018 Financial Results • Revenue of $89.1 million for first quarter of 2018 • Non-GAAP Net Income of $21.6 million, or $0.23 per share, for the first quarter of 2018

EX-99.1 Exhibit 99.1 Casa Systems Announces First Quarter 2018 Financial Results • Revenue of $89.1 million for first quarter of 2018 • Non-GAAP Net Income of $21.6 million, or $0.23 per share, for the first quarter of 2018 Andover, Mass. – May 10, 2018 – Casa Systems, Inc. (NASDAQ:CASA), a leading provider of converged broadband infrastructure technology solutions for mobile, cable and fixed netw

April 26, 2018 424B4

7,350,000 Shares Common Stock

424B4 Table of Contents Filed Pursuant to Rule 424(b)(4) Registration No. 333-224406 PROSPECTUS 7,350,000 Shares Common Stock The selling stockholders identified in this prospectus, including our Chief Executive Officer and other officers and directors, are offering 7,350,000 shares of our common stock. We are not selling any shares of common stock under this prospectus, and we will not receive an

April 23, 2018 8-K

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): April 23, 2018 Casa Systems, Inc. (Exact Name of Registrant as Specified in its Charter) Delaware 001-38324 75-3108867 (State or Other Jurisdiction of Incorporation) (Commission F

April 23, 2018 EX-99.1

Casa Systems Announces Launch of Proposed Public Offering Also Announces Partial Lock-Up Release

EX-99.1 Exhibit 99.1 Casa Systems Announces Launch of Proposed Public Offering Also Announces Partial Lock-Up Release ANDOVER, Mass., April 23, 2018 (GLOBE NEWSWIRE) — Casa Systems, Inc. (NASDAQ:CASA), a provider of software-centric solutions for next generation centralized, distributed and virtualized architectures for cable broadband, fixed-line broadband and wireless networks, today announced t

April 23, 2018 S-1

CASA / Casa Systems, Inc. S-1

S-1 Table of Contents As filed with the Securities and Exchange Commission on April 23, 2018 Registration No.

April 23, 2018 EX-1.1

Form of Underwriting Agreement

EX-1.1 Exhibit 1.1 [•] Shares CASA SYSTEMS, INC. COMMON STOCK, PAR VALUE $0.001 PER SHARE UNDERWRITING AGREEMENT [•], 2018 [•], 2018 Morgan Stanley & Co. LLC Barclays Capital Inc. c/o Morgan Stanley & Co. LLC 1585 Broadway New York, New York 10036 c/o Barclays Capital Inc. 745 Seventh Avenue New York, New York 10019 Ladies and Gentlemen: Certain stockholders of Casa Systems, Inc., a Delaware corpo

April 19, 2018 DRS

CASA / Casa Systems, Inc. DRS

DRS Table of Contents Confidential Treatment Requested by Casa Systems, Inc. Pursuant to 17 C.F.R. Section 200.83 As confidentially submitted to the Securities and Exchange Commission on April 18, 2018 This draft registration statement has not been filed publicly with the Securities and Exchange Commission and all information herein remains strictly confidential. Registration No. 333- UNITED STATE

March 14, 2018 8-K

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

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 8, 2018 Casa Systems, Inc. (Exact Name of Registrant as Specified in its Charter) Delaware 001-38324 75-3108867 (State or Other Jurisdiction of Incorporation) (Commission Fi

March 7, 2018 10-K

CASA / Casa Systems, Inc. 10-K (Annual Report)

f 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, 2017 OR ☐ 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 001-38324 Casa Systems,

March 6, 2018 EX-99.1

Casa Systems Announces Fourth Quarter and Full Year 2017 Financial Results ● Revenue of $351.6 million for 2017 ● Won Three Tier-1 Mobile Customers for New Wireless Solutions

EX-99.1 Exhibit 99.1 Casa Systems Announces Fourth Quarter and Full Year 2017 Financial Results ● Revenue of $351.6 million for 2017 ● Won Three Tier-1 Mobile Customers for New Wireless Solutions Andover, Mass. – March 6, 2018 – Casa Systems, Inc. (NASDAQ:CASA), a provider of software-centric solutions for next-generation centralized, distributed and virtualized architectures for cable broadband,

March 6, 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): March 6, 2018 Casa Systems, Inc. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-38324 75-3108867 (State or Other Jurisdiction of Incorporation) (Commission Fi

February 12, 2018 SC 13G

CASA / Casa Systems, Inc. / SUMMIT PARTNERS L P - SC 13G Passive Investment

SC 13G UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Information to be Included in Statements Filed Pursuant to Rules 13d-1(b), (c) and (d) and Amendments Thereto Filed Pursuant to Rule 13d-2(b) Under the Securities Exchange Act of 1934 (Amendment No. )* Casa Systems, Inc. (Name of Issuer) Common Stock, $0.001 par value (Title of Class of Securities) 14713L 1

December 19, 2017 8-K

Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): December 19, 2017 Casa Systems, Inc. (Exact Name of Registrant as Specified in its Charter) Delaware 001-38324 75-3108867 (State or Other Jurisdiction of Incorporation) (Commission Fi

December 19, 2017 EX-3.1

Restated Certificate of Incorporation of the Registrant (incorporated by reference to Exhibit 3.1 to the Registrant’s Current Report on Form 8-K (File No. 001-38324) filed on December 19, 2017)

Exhibit 3.1 RESTATED CERTIFICATE OF INCORPORATION OF CASA SYSTEMS, INC. (originally incorporated on February 28, 2003) FIRST: The name of the Corporation is Casa Systems, Inc. SECOND: The address of the Corporation?s registered office in the State of Delaware is Corporation Trust Center, 1209 Orange Street, in the City of Wilmington, County of New Castle, 19801. The name of its registered agent at

December 19, 2017 EX-3.2

By-laws of the Registrant (incorporated by reference to Exhibit 3.2 to the Registrant’s Current Report on Form 8-K (File No. 001-38324) filed on December 19, 2017)

Exhibit 3.2 AMENDED AND RESTATED BYLAWS OF CASA SYSTEMS, INC. TABLE OF CONTENTS Page ARTICLE I STOCKHOLDERS 1 1.1 Place of Meetings 1 1.2 Annual Meeting 1 1.3 Special Meetings 1 1.4 Record Date for Stockholder Meetings 1 1.5 Notice of Meetings 2 1.6 Voting List 2 1.7 Quorum 3 1.8 Adjournments 4 1.9 Voting and Proxies 4 1.10 Action at Meeting 4 1.11 Nomination of Directors 5 1.12 Notice of Business

December 15, 2017 424B4

6,000,000 Shares Common Stock

Table of Contents Filed Pursuant to Rule 424(b)(4) Registration No. 333-221658 PROSPECTUS 6,000,000 Shares Common Stock Casa Systems, Inc. is offering 6,000,000 shares of our common stock. This is our initial public offering, and no public market currently exists for our shares of common stock. Summit Partners, our largest stockholder and a venture capital firm that one of our directors, Bruce Eva

December 15, 2017 FWP

Casa Systems, Inc.

Free Writing Prospectus dated December 14, 2017 Relating to Preliminary Prospectus dated December 14, 2017 Filed Pursuant to Rule 433 under the Securities Act of 1933 Registration Statement No.

December 15, 2017 S-8

File No. 333-222073

As filed with the Securities and Exchange Commission on December 15, 2017 Registration No.

December 14, 2017 S-1/A

As filed with the Securities and Exchange Commission on December 14, 2017

Table of Contents As filed with the Securities and Exchange Commission on December 14, 2017 Registration No.

December 12, 2017 8-A12B

Form 8-A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-A FOR REGISTRATION OF CERTAIN CLASSES OF SECURITIES PURSUANT TO SECTION 12(b) OR (g) OF THE SECURITIES EXCHANGE ACT OF 1934 Casa Systems, Inc. (Exact name of registrant as specified in its charter) Delaware 75-3108867 (State of incorporation or organization) (I.R.S. Employer Identification No.) 100 Old River Road Andove

December 11, 2017 CORRESP

Casa Systems, Inc. 100 Old River Road Andover, MA 01810 December 11, 2017

Casa Systems, Inc. 100 Old River Road Andover, MA 01810 December 11, 2017 VIA EDGAR Securities and Exchange Commission Division of Corporation Finance 100 F Street, N.E. Washington, D.C. 20549 Re: Casa Systems, Inc. Registration Statement on Form S-1 File No. 333-221658 Request for Acceleration Ladies and Gentlemen: Pursuant to Rule 461 promulgated under the Securities Act of 1933, as amended, Cas

December 11, 2017 CORRESP

December 11, 2017

December 11, 2017 VIA EDGAR Securities and Exchange Commission Division of Corporation Finance 100 F Street, N.

December 4, 2017 EX-3.5

Certificate of Amendment of Amended and Restated Certificate of Incorporation of the Registrant, effective December 1, 2017

Exhibit 3.5 CERTIFICATE OF AMENDMENT OF AMENDED AND RESTATED CERTIFICATE OF INCORPORATION OF CASA SYSTEMS, INC. Casa Systems, Inc., a corporation organized and existing under and by virtue of the General Corporation Law of the State of Delaware (the ?Corporation?), DOES HEREBY CERTIFY: FIRST: That a resolution was duly adopted by the Board of Directors of the Corporation pursuant to Section 242 of

December 4, 2017 S-1/A

As filed with the Securities and Exchange Commission on December 4, 2017

Table of Contents As filed with the Securities and Exchange Commission on December 4, 2017 Registration No.

December 4, 2017 EX-1.1

Form of Underwriting Agreement

Exhibit 1.1 [?] Shares CASA SYSTEMS, INC. COMMON STOCK, PAR VALUE $0.001 PER SHARE UNDERWRITING AGREEMENT [?], 2017 [?], 2017 Morgan Stanley & Co. LLC Barclays Capital Inc. c/o Morgan Stanley & Co. LLC 1585 Broadway New York, New York 10036 c/o Barclays Capital Inc. 745 Seventh Avenue New York, New York 10019 Ladies and Gentlemen: Casa Systems, Inc., a Delaware corporation (the ?Company?), propose

December 4, 2017 EX-3.3

Form of Restated Certificate of Incorporation of the Registrant (to be effective immediately prior to the closing of this offering)

Exhibit 3.3 RESTATED CERTIFICATE OF INCORPORATION OF CASA SYSTEMS, INC. FIRST: The name of the Corporation is Casa Systems, Inc. SECOND: The address of the Corporation?s registered office in the State of Delaware is Corporation Trust Center, 1209 Orange Street, in the City of Wilmington, County of New Castle, 19801. The name of its registered agent at that address is The Corporation Trust Company.

December 4, 2017 EX-4.1

Specimen Stock Certificate evidencing the shares of common stock

Exhibit 4.1 THE CORPORATION WILL FURNISH TO ANY STOCKHOLDER, UPON REQUEST AND WITHOUT CHARGE, A FULL STATEMENT OF THE DESIGNATIONS, RELATIVE RIGHTS, PREFERENCES AND LIMITATIONS OF THE SHARES OF EACH CLASS AND SERIES AUTHORIZED TO BE ISSUED, SO FAR AS THE SAME HAVE BEEN DETERMINED, AND OF THE AUTHORITY, IF ANY, OF THE BOARD TO DIVIDE THE SHARES INTO CLASSES OR SERIES AND TO DETERMINE AND CHANGE THE

November 28, 2017 CORRESP

* * *

FOIA CONFIDENTIAL TREATMENT REQUEST +1 617 526 6000 (t) +1 617 526 5000 (f) The entity requesting confidential treatment is: Casa Systems, Inc.

November 17, 2017 EX-10.4

Form of Nonstatutory Stock Option Agreement under 2003 Stock Incentive Plan

Exhibit 10.4 CASA SYSTEMS, INC. Nonstatutory Stock Option Agreement Granted Under 2003 Stock Incentive Plan 1. Grant of Option. This agreement evidences the grant by Casa Systems, Inc., a Delaware corporation (the ?Company?), on , 200 (the ?Grant Date?) to , an employee, consultant or director of the Company (the ?Participant?), of an option to purchase, in whole or in part, on the terms provided

November 17, 2017 EX-10.14

Form of Restricted Stock Unit Agreement under 2017 Stock Incentive Plan

Exhibit 10.14 CASA SYSTEMS, INC. Restricted Stock Unit Agreement (Time Vested) 2017 Stock Incentive Plan NOTICE OF GRANT This Restricted Stock Unit Agreement (this ?Agreement?) is made as of the Agreement Date between Casa Systems, Inc. (the ?Company?), a Delaware corporation, and the Participant. I. Agreement Date: II. Participant Information Participant: Participant Address: III. Grant Informati

November 17, 2017 EX-3.4

Form of Amended and Restated Bylaws of the Registrant (to be effective immediately prior to the closing of this offering)

Exhibit 3.4 AMENDED AND RESTATED BYLAWS OF CASA SYSTEMS, INC. TABLE OF CONTENTS Page ARTICLE I STOCKHOLDERS 1 1.1 Place of Meetings 1 1.2 Annual Meeting 1 1.3 Special Meetings 1 1.4 Record Date for Stockholder Meetings 1 1.5 Notice of Meetings 2 1.6 Voting List 2 1.7 Quorum 3 1.8 Adjournments 4 1.9 Voting and Proxies 4 1.10 Action at Meeting 4 1.11 Nomination of Directors 5 1.12 Notice of Business

November 17, 2017 EX-21.1

List of Subsidiaries

Exhibit 21.1 Subsidiaries of Casa Systems, Inc. Name of Subsidiary Jurisdiction of Incorporation or Organization Casa Communications Limited Ireland Casa Communications Technology S.L. Spain Casa Properties LLC Delaware Casa Systems B.V. Netherlands Casa Systems Canada Ltd. Quebec, Canada Casa Systems SAS France Casa Systems Securities Corporation Massachusetts Guangzhou Casa Communication Technol

November 17, 2017 EX-10.5

Form of Restricted Stock Agreement under 2003 Stock Incentive Plan

Exhibit 10.5 CASA SYSTEMS, INC. Restricted Stock Agreement Granted Under 2003 Stock Incentive Plan AGREEMENT made this day of , 200 , between Casa Systems, Inc., a Delaware corporation (the ?Company?), and (the ?Participant?). For valuable consideration, receipt of which is acknowledged, the parties hereto agree as follows: 1. Purchase of Shares. The Company shall issue and sell to the Participant

November 17, 2017 EX-10.2

2003 Stock Incentive Plan, as amended

Exhibit 10.2 CASA SYSTEMS, INC. 2003 STOCK INCENTIVE PLAN 1. Purpose The purpose of this 2003 Stock Incentive Plan (the ?Plan?) of Casa Systems, Inc., a Delaware corporation (the ?Company?), is to advance the interests of the Company?s stockholders by enhancing the Company?s ability to attract, retain and motivate persons who make (or are expected to make) important contributions to the Company by

November 17, 2017 EX-10.18

Mortgage, Security Agreement and Financing Statement, dated July 1, 2015, between Casa Properties LLC and Middlesex Savings Bank

Exhibit 10.18 Return To: Middlesex Savings Bank Attn: Loan Servicing 120 Flanders Road Westborough, MA 01851 MORTGAGE, SECURITY AGREEMENT AND FINANCING STATEMENT This MORTGAGE, SECURITY AGREEMENT AND FINANCING STATEMENT (this ?Mortgage?) entered into as of July 1, 2015 between Casa Properties LLC, a Delaware limited liability company with an address of 100 Old River Road, Suite 100, Andover, Massa

November 17, 2017 EX-10.22

Security Agreement, dated as of December 20, 2016, by and among the Registrant, each of the subsidiaries of the Registrant party thereto, and JPMorgan Chase Bank, N.A., as Collateral Agent

Exhibit 10.22 SECURITY AGREEMENT dated as of December 20, 2016 among CASA SYSTEMS, INC., THE SUBSIDIARIES OF CASA SYSTEMS, INC. IDENTIFIED HEREIN and JPMORGAN CHASE BANK, N.A., as Collateral Agent Table of Contents Page ARTICLE I Definitions 1 Section 1.01. Credit Agreement 1 Section 1.02. Other Defined Terms 1 ARTICLE II Pledge of Securities 4 Section 2.01. Pledge 4 Section 2.02. Delivery of the

November 17, 2017 EX-3.1

Certificate of Incorporation of the Registrant

Exhibit 3.1 AMENDED AND RESTATED CERTIFICATE OF INCORPORATION OF CASA SYSTEMS, INC. Casa Systems, Inc. (hereinafter called the ?Corporation?), a corporation organized and existing under and by virtue of the General Corporation Law of the State of Delaware, does hereby certify as follows: 1. The name of the corporation is Casa Systems, Inc. The original Certificate of Incorporation was filed with t

November 17, 2017 EX-10.9

Form of Restricted Stock Agreement under 2011 Stock Incentive Plan

Exhibit 10.9 CASA SYSTEMS, INC. Restricted Stock Agreement Granted Under 2011 Stock Incentive Plan AGREEMENT made this day of , 20 , between Casa Systems, Inc., a Delaware corporation (the ?Company?), and (the ?Participant?). For valuable consideration, receipt of which is acknowledged, the parties hereto agree as follows: 1. Purchase of Shares. The Company shall issue and sell to the Participant,

November 17, 2017 EX-10.25

Employment Agreement, dated November 17, 2017, by and between the Registrant and Lucy Xie

Exhibit 10.25 EMPLOYMENT AGREEMENT THIS EMPLOYMENT Agreement (the ?Agreement?), effective November 17, 2017 (the ?Effective Date?), is made and entered into by and between Casa Systems, Inc. (the ?Company?), and Lucy Xie (the ?Executive?). RECITALS WHEREAS, the Company desires to continue to employ the Executive as its Senior Vice President of Operations; and WHEREAS, the Executive has agreed to a

November 17, 2017 EX-3.3

Form of Restated Certificate of Incorporation of the Registrant (to be effective immediately prior to the closing of the Registrant’s initial public offering) (incorporated by reference to Exhibit 3.3 to the Registrant’s Registration Statement on Form S-1 (File No. 333-221658) filed with the Securities and Exchange Commission on November 17, 2017).

Exhibit 3.3 RESTATED CERTIFICATE OF INCORPORATION OF CASA SYSTEMS, INC. FIRST: The name of the Corporation is Casa Systems, Inc. SECOND: The address of the Corporation?s registered office in the State of Delaware is Corporation Trust Center, 1209 Orange Street, in the City of Wilmington, County of New Castle, 19801. The name of its registered agent at that address is The Corporation Trust Company.

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