COMTECH TELECOMMUNICATIONS CORP /DE/

Notice of Fiscal 2025 Annual Meeting of Stockholders and

Proxy Statement

Comtech Telecommunications Corp.

Virtual Webcast

March 9, 2026 at 1:00 p.m. Eastern Time

at www.cesonlineservices.com/cmtl26_vm

To attend the Annual Meeting, you will need to register in advance no later than 1:00 p.m. Eastern Time on March 8, 2026.See “Proxy Summary” for details on admission procedures to attend the Annual Meeting of Stockholders.

January 30, 2026

Dear Fellow Stockholders:

In Fiscal 2025, we successfully executed a transformation of Comtech Telecommunications Corp. (“Comtech” or the “Company”) that has significantly strengthened the Company. I joined Comtech as an independent director on October 31, 2024, became Executive Chairman on November 27, 2024 and became the CEO on January 13, 2025. It has been an honor to lead Comtech’s transformation as we focus on enhancing value for you, our stockholders.

Some of our noteworthy achievements during the course of fiscal 2025 include:

•Significantly improved Comtech's financial health as evidenced by the removal of thedisclosures regarding the Company’s ability to continue as a going concern

•Produced positive operating cash flow – $2.3 million in Q3 and $11.4 million in Q4, marking the first quarters of positive operating cash flow since fiscal 2023

•Boosted total liquidity to $47 million as of July 31, 2025 – the highest level in recent history

•Reduced accounts payable to $26 million as of July 31, 2025 – the lowest level in years

•Improved gross margins from 12.5% in Q1 to 31.2% in Q4

•Improved Adjusted EBITDA from negative $31 million in Q1 to positive $13 million in Q4

•Achieved significant advancements in both operating segments as well as Corporate including:

◦Our public safety business, rebranded as Allerium, has deepened its market presence and introduced innovative new capabilities while securing long-term customer partnerships;

◦Our Satellite and Space Communications business executed a successful turnaround, revitalizing the business to address growing demand for secure, mission critical communications with the launch of our next-generation platforms;

◦Secured new subordinated debt investments and amended credit agreements providing increased financial flexibility and a covenant holiday through January 31, 2027; and

◦Reinvigorated the corporate culture emphasizing transparency, empowerment and accountability, which has enhanced morale, retention and performance.

These achievements were enabled by enhanced corporate governance, decisive executive leadership, dedicated customer focus, disciplined operational efficiency, reduced cost structure and improved working capital management.

Current and prospective customers, vendors and employees have noted the positive transformation and there is a renewed enthusiasm about building expanded long-term relationships with Comtech.

The Comtech Board of Directors (the “Board”) has also been significantly strengthened. Shortly following my appointment to the Board in October 2024, Michael Hildebrandt was appointed to the Board and took on important leadership roles as Chairman of the Nominating and Governance Committee, Chairman of the Strategic Review Committee and a member of the Audit Committee. Lloyd A. Sprung was appointed to the Board in August 2025 and serves on the Audit Committee and the Strategic Review Committee. More recently, Mary Jane Raymond joined the Board in December 2025 and also serves on the Audit Committee and the Strategic Review Committee. We will be reducing the size of the Board to seven members following the Fiscal 2025 Annual Meeting of Stockholders (the “2025 Annual Meeting” or the “Annual Meeting”) as Wendi B. Carpenter advised the Company of her decision to retire from the Board and not to stand for re-election upon the end of her current term at the Annual Meeting. The Board and I would like to thank Wendi for her contributions and service to the Board.

We cordially invite you to attend the Annual Meeting, scheduled to be held on March 9, 2026 at 1:00 p.m. Eastern Time in a virtual meeting format only, via a live webcast. The Notice of the Fiscal 2025 Annual Meeting of Stockholders, Proxy Statement and proxy card are enclosed.

Your Board recommends that you promptly vote “FOR” the election of each of the director nominees named in this proxy statement under Proposal 1 and “FOR” each of Proposals No. 2, 3 and 4 on the enclosed proxy card. It is important that your shares are voted at the Annual Meeting. Whether or not you are able to attend the virtual Annual Meeting, the prompt execution and return of the enclosed proxy card in the envelope provided or submission of your proxy and voting instructions over the Internet or by telephone will assure that your shares are represented at the Annual Meeting. Instructions for voting by mail, via the Internet or by telephone are set forth on the enclosed proxy card.

Important Notice Regarding the Availability of Proxy Materials for the Fiscal 2025 Annual Meeting of Stockholders to be Held on March 9, 2026.

Sincerely,

Kenneth Traub

Chairman, President and Chief Executive Officer

January 30, 2026

NOTICE OF FISCAL 2025 ANNUAL MEETING OF STOCKHOLDERS

NOTICE OF FISCAL 2025 ANNUAL MEETING OF STOCKHOLDERS

PROXY SUMMARY