Helix ex-VP cashes out 50K RSUs at $10.30

Former VP & CAO’s 50,258 RSUs were cashed out in the Helix–Hornbeck merger, ending his Section 16 reporting status.

Rhea-AI Filing Summary

HELIX ENERGY SOLUTIONS GROUP INC (symbol: HLX) is the issuer of record for a Form 4 filing submitted to the SEC. Arriaga Brent Alexander reported disposition transactions in this Form 4 filing.

Helix Energy Solutions Group Inc. (HLX), now part of Hornbeck Offshore Services, Inc., reports that former VP & CAO Brent Alexander Arriaga had a total of 50,258 restricted stock units in three RSU awards converted and canceled for cash on September 1, 2026 under the merger agreement, and he will no longer be subject to Section 16 reporting.

Insider Trade Summary

50,258 shares exercised/converted

Exercise 3 txns

Insider Arriaga Brent Alexander

Role Insider

Type	Security	Shares	Price	Value
Exercise	Restricted Stock Units F1, F2	4,054	$0.00	$0.00
Exercise	Restricted Stock Units F1, F3	14,306	$0.00	$0.00
Exercise	Restricted Stock Units F1, F4	31,898	$0.00	$0.00

Holdings After Transaction: Restricted Stock Units — 0 contracts (Direct)

Footnotes (4)

1. F1. Pursuant to the terms of the Agreement and Plan of Merger, dated as of April 22, 2026, by and among Helix Energy Solutions Group, Inc. Odyssey Sub, Inc., Hercules Sub LLC and Hornbeck Offshore Services, Inc. (the "Merger Agreement"), each award of restricted stock units (a "Parent RSU Award") owned by the reporting person as of the Effective Time was canceled in exchange for an amount in cash equal to the number of shares of Parent Common Stock subject to such Parent RSU Award multiplied by the closing price of a share of Parent Common Stock on the NYSE on the Trading Day immediately prior to the Closing Date, which was $10.30.
2. F2. Each restricted stock unit subject to the Parent RSU Award granted on January 1, 2024 ("2024 Parent RSU Award") represented the contingent right to receive one share of Parent Common Stock. Forfeiture restrictions lapsed with respect to one-third of the 2024 Parent RSU Award on January 1, 2025, forfeiture restrictions with respect to an additional one-third of the award lapsed on January 1, 2026 and, pursuant to the Merger Agreement, the remaining forfeiture restrictions with respect to the award lapsed on September 1, 2026.
3. F3. Each restricted stock unit subject to the Parent RSU Award granted on January 1, 2025 ("2025 Parent RSU Award") represented the contingent right to receive one share of Parent Common Stock. Forfeiture restrictions lapsed with respect to one-third of the 2025 Parent RSU Award on January 1, 2026 and, pursuant to the terms of the Merger Agreement, the remaining forfeiture restrictions with respect to the award lapsed on September 1, 2026.
4. F4. Each restricted stock unit subject to the Parent RSU Award granted on January 1, 2026 ("2026 Parent RSU Award") represented the contingent right to receive one share of Parent Common Stock. Pursuant to the terms of the Merger Agreement, all forfeiture restrictions with respect to the 2026 Parent RSU Award lapsed on September 1, 2026.

Key Figures

2024 RSU Award units canceled: 4,054 units 2025 RSU Award units canceled: 14,306 units 2026 RSU Award units canceled: 31,898 units +3 more

6 metrics

2024 RSU Award units canceled 4,054 units Restricted Stock Units converted and canceled for cash on September 1, 2026

2025 RSU Award units canceled 14,306 units Restricted Stock Units converted and canceled for cash on September 1, 2026

2026 RSU Award units canceled 31,898 units Restricted Stock Units converted and canceled for cash on September 1, 2026

Total RSUs converted and canceled 50,258 units Aggregate derivative exercises reported in the Form 4 transaction summary

Cash-out price per underlying share $10.30 per share Closing price on NYSE on the trading day before the merger closing date used to cash out RSUs

Merger agreement date April 22, 2026 Date of Agreement and Plan of Merger governing RSU treatment

Key Terms

Agreement and Plan of Merger, Parent RSU Award, forfeiture restrictions, Effective Time, +1 more

5 terms

Agreement and Plan of Merger regulatory

"Pursuant to the terms of the Agreement and Plan of Merger, dated as of April 22, 2026"

An Agreement and Plan of Merger is a formal document where two companies agree to combine into one, outlining how the process will happen. It’s like a step-by-step plan for merging, and it matters because it shows both sides have agreed on the details before the official transition takes place.

Parent RSU Award financial

"each award of restricted stock units (a "Parent RSU Award") owned by the reporting person"

forfeiture restrictions financial

"Forfeiture restrictions lapsed with respect to one-third of the 2024 Parent RSU Award"

Effective Time regulatory

"owned by the reporting person as of the Effective Time was canceled in exchange for cash"

The exact clock time when a regulatory filing, approval, or corporate action formally becomes legally active; from that moment the change is binding and can be acted on. Investors care because the effective time marks when ownership, rights, trading rules, or new securities take effect — like a light switch turning on a contract or transaction — which determines when risks, benefits and market reactions begin.

Parent Common Stock financial

"multiplied by the closing price of a share of Parent Common Stock on the NYSE"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What did the Form 4 report for HLX regarding Brent Alexander Arriaga’s equity?

It reported that 50,258 restricted stock units held by former VP & CAO Brent Alexander Arriaga were converted and canceled for cash on September 1, 2026 in connection with the merger involving Hornbeck Offshore Services, Inc.

How many RSUs from each award were affected in the HLX merger?

Three RSU awards were affected: 4,054 units from the 2024 award, 14,306 units from the 2025 award, and 31,898 units from the 2026 award, all converted and canceled for cash under the merger agreement.

At what share price were the HLX RSUs cashed out?

Each RSU was cashed out at $10.30 per underlying share, equal to the closing price of the Parent Common Stock on the NYSE on the trading day immediately before the merger closing date, as specified in the merger agreement.

Were Brent Alexander Arriaga’s HLX transactions under a Rule 10b5-1 plan?

No. The filing indicates no Rule 10b5-1 trading plan for these transactions; the document-level box for Rule 10b5-1 was not checked.

What happens to Brent Alexander Arriaga’s Section 16 status after the HLX merger?

After completion of the transactions under the merger agreement, he is no longer subject to Section 16 for trades in Hornbeck Offshore Services, Inc. equity and will no longer report on Forms 4 or 5 for those securities.

Did the forfeiture restrictions on the HLX RSU awards lapse early due to the merger?

Yes. Remaining forfeiture restrictions on the 2024, 2025, and 2026 RSU awards lapsed on September 1, 2026 pursuant to the merger agreement, allowing the RSUs to be cashed out.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 09/02/2026 - 04:48 PM EDT Accepted by SEC EDGAR 09/02/2026 - 04:46 PM EDT Learn about SEC filing dates

SEC Form 4

FORM 4

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
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

X

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

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Arriaga Brent Alexander

(Last) (First) (Middle)

3505 WEST SAM HOUSTON PKWY NORTH

SUITE 400

(Street)

HOUSTON TEXAS 77043

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
HORNBECK OFFSHORE SERVICES, INC. [ HOS ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
	Officer (give title below)	X	Other (specify below)
			FORMER VP & CAO

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/01/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	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

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 (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	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 (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (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: 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	(1)(2)	09/01/2026		M			4,054	(1)(2)	(1)(2)	Common Stock	4,054	$0	0	D
Restricted Stock Units	(1)(3)	09/01/2026		M			14,306	(1)(3)	(1)(3)	Common Stock	14,306	$0	0	D
Restricted Stock Units	(1)(4)	09/01/2026		M			31,898	(1)(4)	(1)(4)	Common Stock	31,898	$0	0	D

Explanation of Responses:

1. Pursuant to the terms of the Agreement and Plan of Merger, dated as of April 22, 2026, by and among Helix Energy Solutions Group, Inc. Odyssey Sub, Inc., Hercules Sub LLC and Hornbeck Offshore Services, Inc. (the "Merger Agreement"), each award of restricted stock units (a "Parent RSU Award") owned by the reporting person as of the Effective Time was canceled in exchange for an amount in cash equal to the number of shares of Parent Common Stock subject to such Parent RSU Award multiplied by the closing price of a share of Parent Common Stock on the NYSE on the Trading Day immediately prior to the Closing Date, which was $10.30.

2. Each restricted stock unit subject to the Parent RSU Award granted on January 1, 2024 ("2024 Parent RSU Award") represented the contingent right to receive one share of Parent Common Stock. Forfeiture restrictions lapsed with respect to one-third of the 2024 Parent RSU Award on January 1, 2025, forfeiture restrictions with respect to an additional one-third of the award lapsed on January 1, 2026 and, pursuant to the Merger Agreement, the remaining forfeiture restrictions with respect to the award lapsed on September 1, 2026.

3. Each restricted stock unit subject to the Parent RSU Award granted on January 1, 2025 ("2025 Parent RSU Award") represented the contingent right to receive one share of Parent Common Stock. Forfeiture restrictions lapsed with respect to one-third of the 2025 Parent RSU Award on January 1, 2026 and, pursuant to the terms of the Merger Agreement, the remaining forfeiture restrictions with respect to the award lapsed on September 1, 2026.

4. Each restricted stock unit subject to the Parent RSU Award granted on January 1, 2026 ("2026 Parent RSU Award") represented the contingent right to receive one share of Parent Common Stock. Pursuant to the terms of the Merger Agreement, all forfeiture restrictions with respect to the 2026 Parent RSU Award lapsed on September 1, 2026.

Remarks:

Following the transactions contemplated by the Merger Agreement, the reporting person is no longer subject to Section 16 in connection with his transactions in the equity securities of Hornbeck Offshore Services, Inc. (formerly named Helix Energy Solutions Group, Inc.) and therefore will no longer report any such transactions on Form 4 or Form 5. Capitalized terms used herein without definition have the meanings ascribed to them in the Merger Agreement.

	/s/ Brent Arriaga	09/02/2026
	** Signature of Reporting Person	Date
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).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)