Sec Form 3 Filing - Gizinski Daniel @ COMTECH TELECOMMUNICATIONS CORP /DE/ - 2024-08-16

FORM 3 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person Gizinski Daniel 2. Issuer Name and Ticker or Trading Symbol COMTECH TELECOMMUNICATIONS CORP /DE/ [ CMTL] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) CSO & President of CSNTI (Last) (First) (Middle) 305 M 54TH STREET 3. Date of Earliest Transaction (MM/DD/YY) 08/16/2024 (Street) CHANDLER, AZ85226 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) __ X __ Form filed by One Reporting Person _____ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock Par Value $0.10 Per Share 10,610 D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares Restricted Stock Units ( 2 ) ( 1 ) ( 1 ) Common Stock Par Value $0.10 Per Share 349 D Restricted Stock Units ( 2 ) ( 3 ) ( 3 ) Common Stock Par Value $0.10 Per Share 560 D Restricted Stock Units ( 2 ) ( 4 ) ( 4 ) Common Stock Par Value $0.10 Per Share 3,059 D Restricted Stock Units ( 2 ) ( 5 ) ( 5 ) Common Stock Par Value $0.10 Per Share 1,374 D Restricted Stock Units ( 2 ) ( 6 ) ( 6 ) Common Stock Par Value $0.10 Per Share 3,922 D Restricted Stock Units ( 8 ) ( 7 ) ( 7 ) Common Stock Par Value $0.10 Per Share 7,717 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Gizinski Daniel 305 M 54TH STREET CHANDLER, AZ85226 CSO & President of CSNTI Signatures /s/ Michael C. Shay, Attorney-in-Fact for Daniel Gizinski 08/23/2024 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Assuming continued service as an employee, the restricted stock units vest on August 4, 2025. ( 2 )Restricted stock units were granted under the Company's 2000 Stock Incentive Plan, and represent the right to receive one share of common stock of Comtech Telecommunications Corp. upon vesting of the unit. ( 3 )Assuming continued service as an employee, the restricted stock units vest in equal increments on August 10, 2025 and August 10, 2026. ( 4 )Assuming continued service as an employee, the restricted stock units vest in equal increments on February 4, 2025, February 4, 2026, and February 4, 2027. ( 5 )Assuming continued service as an employee, the restricted stock units vest on August 12, 2025. ( 6 )Assuming continued service as an employee, the restricted stock units vest in equal increments on August 11, 2025 and August 11, 2026. ( 7 )Assuming continued service as an employee, the restricted stock units vest in equal increments on July 31, 2025, July 31, 2026 and July 31, 2027. ( 8 )Restricted stock units were granted under the Company's 2023 Equity and Incentive Plan, and represent the right to receive one share of common stock of Comtech Telecommunications Corp. upon vesting of the unit.

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

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