Erik Staffeldt - 01 Sep 2026 Form 4 Insider Report for HORNBECK OFFSHORE SERVICES, INC. (HLX)

Reporting relationship: FORMER EVP & CFO
Issuer ticker: HLX
Reported as of: 01 Sep 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 02 Sep 2026, 16:41:43 UTC
Prior SEC filing: 27 Feb 2026
Source filing: View source filing
Reporting owner signature: /s/ Erik Staffeldt

Key filing fact

Erik Staffeldt filed Form 4 for HORNBECK OFFSHORE SERVICES, INC. (HLX) on 02 Sep 2026.

Key facts

This page summarizes Erik Staffeldt's Form 4 filing for HORNBECK OFFSHORE SERVICES, INC. (HLX).
6 reported transactions and 6 derivative rows are listed below.
Accepted by SEC: 02 Sep 2026, 16:41.

Change

Previous filing in this sequence was filed on 27 Feb 2026.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001648839 Primary reporting owner

Staffeldt Erik

Relationship: FORMER EVP & CFO
Address: 3505 WEST SAM HOUSTON PKWY NORTH, SUITE 400, HOUSTON
Signature: /s/ Erik Staffeldt
Signature date: 02 Sep 2026

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

HLX transaction Derivative

Performance Share Units

Options Exercise

Transaction value
Shares: -94,845
Change %: -100%
Price: $0.000000^*
Shares after: 0
Date: 01 Sep 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 94,845
Exercise price
Footnotes: F1, F2

HLX transaction Derivative

Performance Share Units

Options Exercise

Transaction value
Shares: -105,998
Change %: -100%
Price: $0.000000^*
Shares after: 0
Date: 01 Sep 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 105,998
Exercise price
Footnotes: F1, F3

HLX transaction Derivative

Performance Share Units

Options Exercise

Transaction value
Shares: -212,838
Change %: -100%
Price: $0.000000^*
Shares after: 0
Date: 01 Sep 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 212,838
Exercise price
Footnotes: F1, F4

HLX transaction Derivative

Restricted Stock Units

Options Exercise

Transaction value
Shares: -21,077
Change %: -100%
Price: $0.000000^*
Shares after: 0
Date: 01 Sep 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 21,077
Exercise price
Footnotes: F1, F5

HLX transaction Derivative

Restricted Stock Units

Options Exercise

Transaction value
Shares: -52,933
Change %: -100%
Price: $0.000000^*
Shares after: 0
Date: 01 Sep 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 52,933
Exercise price
Footnotes: F1, F6

HLX transaction Derivative

Restricted Stock Units

Options Exercise

Transaction value
Shares: -125,199
Change %: -100%
Price: $0.000000^*
Shares after: 0
Date: 01 Sep 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 125,199
Exercise price
Footnotes: F1, F7

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Section 16 status

Erik Staffeldt is no longer subject to Section 16 filing requirements. Form 4 or Form 5 obligations may still apply in specific circumstances.

Explanation of responses 7 footnotes

Footnote 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 performance share units (a "Parent PSU Award") and 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 PSU Award or 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.

Footnote F2

Each performance share unit subject to the Parent PSU Award granted on January 1, 2024 ("2024 Parent PSU Award") pursuant to the Parent's 2005 Long-Term Incentive Plan (as amended, the "LTIP") represented the contingent right to receive one share of Parent Common Stock subject to the terms of the LTIP and the 2024 Parent PSU Award agreement, subject to the level of achievement with respect to the applicable performance criteria. On August 31, 2026, the Compensation Committee determined that 150.0% of the 2024 Parent PSU Award was earned by the reporting person.

Footnote F3

Each performance share unit subject to the Parent PSU Award granted on January 1, 2025 ("2025 Parent PSU Award") pursuant to the LTIP represented the contingent right to receive one share of Parent Common Stock subject to the terms of the LTIP and the 2025 Parent PSU Award agreement, subject to the level of achievement with respect to the applicable performance criteria. On August 31, 2026, the Compensation Committee determined that 133.5% of the 2025 Parent PSU Award was earned by the reporting person.

Footnote F4

Each performance share unit subject to the Parent PSU Award granted on January 1, 2026 ("2026 Parent PSU Award") pursuant to the LTIP represented the contingent right to receive one share of Parent Common Stock subject to the terms of the LTIP and the 2026 Parent PSU Award agreement, subject to the level of achievement with respect to the applicable performance criteria. On August 31, 2026, the Compensation Committee determined that 170.0% of the 2026 Parent PSU Award was earned by the reporting person.

Footnote F5

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.

Footnote F6

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.

Footnote F7

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.

SEC 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.