Hornbeck officer plans 107K-share stock sale

Officer Erik S. Staffeldt filed a Rule 144 notice to sell 107,081 HLX shares, following recent open-market sales totaling 295,165 shares.

Rhea-AI Filing Summary

HORNBECK OFFSHORE SERVICES, INC. (HLX) received a Rule 144 notice covering the planned sale of 107,081 shares of common stock held for the account of officer Erik S. Staffeldt, with an aggregate market value of $976,149.08 and 147,382,447 shares of common stock outstanding as of September 9, 2026.

The notice also lists recent sales for Staffeldt totaling 295,165 shares of common stock over the prior three months, for aggregate consideration of $2,962,455.65, executed through Fidelity Brokerage Services LLC as broker.

Key Figures

Shares to be sold under Rule 144: 107,081 shares Aggregate market value of planned sale: $976,149.08 Shares outstanding: 147,382,447 shares +5 more

8 metrics

Shares to be sold under Rule 144 107,081 shares Planned sale of HLX common stock for account of Erik S. Staffeldt

Aggregate market value of planned sale $976,149.08 Total market value of 107,081 HLX shares covered by Rule 144 notice

Shares outstanding 147,382,447 shares HLX common stock outstanding as of September 9, 2026

Shares sold on September 2, 2026 117,619 shares HLX common stock sold by Erik S. Staffeldt

Proceeds from September 2, 2026 sale $1,222,070.09 Aggregate consideration for 117,619 HLX shares sold

Shares sold on September 3, 2026 130,635 shares HLX common stock sold by Erik S. Staffeldt

Shares sold on September 8, 2026 50,911 shares HLX common stock sold by Erik S. Staffeldt

Total proceeds from three recent sales $2,962,455.65 Aggregate consideration for 295,165 HLX shares sold in September 2026

Key Terms

Rule 144, Restricted Stock Vesting, attorney-in-fact

3 terms

Rule 144 regulatory

"See the definition of "person" in paragraph (a) of Rule 144."

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

Restricted Stock Vesting financial

"Common | 01/02/2025 | Restricted Stock Vesting | Issuer"

Restricted stock vesting is the timetable and conditions under which shares granted to employees or insiders become fully owned and can be sold, typically requiring continued work or meeting performance goals. It matters to investors because large blocks of shares can become tradable at once, which can change share supply and price, and because vesting aligns insiders’ incentives with the company’s long‑term performance—think of it like a timed unlock that both rewards and locks in key people.

attorney-in-fact regulatory

"as a duly authorized representative of Fidelity... as attorney-in-fact for Erik Staffeldt"

An attorney-in-fact is the person or entity given legal authority through a power of attorney to act on behalf of another for specific tasks, such as signing documents, voting shares, or handling transactions. For investors, this matters because it lets a trusted representative make timely decisions or complete paperwork when the owner cannot, much like handing keys to someone to run errands on your behalf—so checks on scope and limits of that authority are important.

FAQ

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

What does the Form 144 filing disclose for HORNBECK OFFSHORE SERVICES, INC. (HLX)?

It discloses that Erik S. Staffeldt, an officer, filed a Rule 144 notice to sell 107,081 shares of HLX common stock, with an aggregate market value of $976,149.08, through Fidelity Brokerage Services LLC on or after September 9, 2026.

How many HLX shares did Erik S. Staffeldt sell in the last three months?

The filing lists sales of 117,619 shares on September 2, 2026, 130,635 shares on September 3, 2026, and 50,911 shares on September 8, 2026, totaling 295,165 shares of HORNBECK OFFSHORE SERVICES, INC. common stock.

What total proceeds did Erik S. Staffeldt receive from recent HLX share sales?

The recent sales reported under Rule 144 total $2,962,455.65 in aggregate consideration: $1,222,070.09 on September 2, $1,275,873.45 on September 3, and $464,512.11 on September 8, 2026.

How many HLX shares are outstanding according to this Form 144?

The Form 144 states that 147,382,447 shares of HORNBECK OFFSHORE SERVICES, INC. common stock are outstanding as of September 9, 2026. This is a baseline figure for the class, separate from the shares being sold under Rule 144.

What is the nature of the HLX shares to be sold under this Form 144?

The securities are common stock of HORNBECK OFFSHORE SERVICES, INC., originally acquired via restricted stock vesting on January 1, 2020 (2,596 shares) and January 2, 2025 (104,485 shares), characterized as compensation and issued by the company.

Who is executing the planned HLX share sales for Erik S. Staffeldt?

The filing identifies Fidelity Brokerage Services LLC as the broker for the planned sale of 107,081 HLX common shares. The Form 144 is signed by Daniel Tucci as a duly authorized representative and attorney-in-fact for Erik S. Staffeldt.

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

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Available on EDGAR 09/09/2026 - 04:30 PM EDT Accepted by SEC EDGAR 09/09/2026 - 04:29 PM EDT Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001648839
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	HORNBECK OFFSHORE SERVICES, INC.
SEC File Number	001-32936
Address of Issuer	103 NORTHPARK BOULEVARD SUITE 300 COVINGTON LOUISIANA 70433
Phone	985-727-2000
Name of Person for Whose Account the Securities are To Be Sold	Staffeldt Erik
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Officer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI 02917	107081	976149.08	147382447	09/09/2026	NYSE

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	01/01/2020	Restricted Stock Vesting	Issuer			2596	01/01/2020	Compensation
Common	01/02/2025	Restricted Stock Vesting	Issuer			104485	01/02/2025	Compensation

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
Erik S. Staffeldt 103 Northpark Boulevard Suite 300 Covington LA 70433	Common	09/02/2026	117619	1222070.09
Erik S. Staffeldt 103 Northpark Boulevard Suite 300 Covington LA 70433	Common	09/03/2026	130635	1275873.45
Erik S. Staffeldt 103 Northpark Boulevard Suite 300 Covington LA 70433	Common	09/08/2026	50911	464512.11

144: Remarks and Signature

Remarks
Date of Notice	09/09/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ Daniel Tucci, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Erik Staffeldt
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)