Sec Form 4 Filing - Neikirk Kenneth English @ HELIX ENERGY SOLUTIONS GROUP INC - 2025-02-27

FORM 4 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 Neikirk Kenneth English 2. Issuer Name and Ticker or Trading Symbol HELIX ENERGY SOLUTIONS GROUP INC [ HLX] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) EVP, GEN COUNSEL & SECRETARY (Last) (First) (Middle) 3505 WEST SAM HOUSTON PKWY NORTH, SUITE 400 3. Date of Earliest Transaction (MM/DD/YY) 02/27/2025 (Street) HOUSTON, TX77043 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 02/27/2025 M 128,205 A 310,510 D Common Stock 02/27/2025 F 50,449 ( 2 ) D $ 9.32 260,061 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 Performance Share Units ( 1 ) 02/27/2025 M 128,205 ( 1 ) ( 1 ) Common Stock 128,205 $ 0 ( 1 ) 0 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Neikirk Kenneth English 3505 WEST SAM HOUSTON PKWY NORTH SUITE 400 HOUSTON, TX77043 EVP, GEN COUNSEL & SECRETARY Signatures /s/ Ken Neikirk 03/03/2025 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Each Performance Share Unit ("2022 PSU") was granted on January 4, 2022 pursuant to the Company's 2005 Long-Term Incentive Plan (as amended, the "LTIP") and represented the contingent right to receive one share of Company common stock subject to the terms of the LTIP and the 2022 PSU Award Agreement. Actual number of shares upon vesting could have ranged from 0-200% dependent in equal parts on the Company's total shareholder return performance compared to a selected peer group and the generation of free cash flow ("FCF") compared to benchmarks over the three-year period beginning January 1, 2022 and ended December 31, 2024. The Company generated cumulative FCF during the performance period exceeding the highest benchmark threshold under the 2022 PSU Award Agreement which resulted in a 200% payout for the FCF portion and are settled hereby. ( 2 )These shares were forfeited to satisfy tax obligations related to the vesting of the reporting person's 2022 PSUs.

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).

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