Hornbeck EVP Cook holds 140,793 company shares

HORNBECK OFFSHORE SERVICES, INC.

Rhea-AI Filing Summary

HORNBECK OFFSHORE SERVICES, INC. (HLX) reported an initial statement of beneficial ownership on Form 3 for Brian Michael Cook, who serves as Executive Vice President and Chief Accounting Officer. The filing shows direct ownership of 140,793 shares of Common Stock and reports no derivative securities and no buy or sell transactions. No Rule 10b5-1 trading plan is indicated.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Cook Brian Michael

Role See Remarks

Type	Security	Shares	Price	Value
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 140,793 shares (Direct)

Key Figures

Common Stock directly owned: 140,793 shares Reported buy transactions: 0 transactions Reported sell transactions: 0 transactions

3 metrics

Common Stock directly owned 140,793 shares Total direct holdings reported on Form 3

Reported buy transactions 0 transactions Transaction summary in this Form 3

Reported sell transactions 0 transactions Transaction summary in this Form 3

Key Terms

Common Stock, Power of Attorney, Executive Vice President and Chief Accounting Officer

3 terms

Common Stock financial

"The filing shows direct ownership of 140,793 shares of Common Stock"

Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.

Power of Attorney regulatory

"Exhibit List - Exhibit 24.1 - Power of Attorney"

A power of attorney is a legal document that allows one person to make decisions and act on behalf of another person, often in financial or legal matters. It’s like giving someone a trusted helper or agent the authority to handle important tasks if you are unable to do so yourself. This matters to investors because it can impact how their assets are managed or transferred if they become unable to oversee their affairs.

Executive Vice President and Chief Accounting Officer other

"Executive Vice President and Chief Accounting Officer Exhibit List"

FAQ

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

What does the Form 3 for HLX report about Brian Michael Cook?

It reports that Brian Michael Cook, Executive Vice President and Chief Accounting Officer, beneficially owns 140,793 shares of Common Stock of HORNBECK OFFSHORE SERVICES, INC. as a direct holding, with no derivative securities reported.

How many HLX shares does Brian Michael Cook directly own according to this Form 3?

According to the Form 3, Brian Michael Cook directly owns 140,793 shares of Common Stock of HORNBECK OFFSHORE SERVICES, INC., shown as his total direct holdings after the reported position.

Were any buy or sell transactions reported for HLX in this Form 3?

No. The Form 3 shows only a holding entry for 140,793 shares and reports no purchases, sales, gifts, or other transactions in HLX securities for Brian Michael Cook.

Does Brian Michael Cook have any derivative securities of HLX reported on this Form 3?

No. The derivative securities section is empty, so the Form 3 reports no options, warrants, or other derivatives held by Brian Michael Cook in HORNBECK OFFSHORE SERVICES, INC.

Is there a Rule 10b5-1 trading plan associated with this HLX Form 3?

No Rule 10b5-1 trading plan is reported. The filing lists no transactions and does not indicate that any activity occurred under a Rule 10b5-1 or similar pre-arranged trading arrangement.

What officer role does the Form 3 attribute to Brian Michael Cook at HLX?

The remarks explain that Brian Michael Cook serves as Executive Vice President and Chief Accounting Officer of HORNBECK OFFSHORE SERVICES, INC., and the Form 3 reflects his position as an officer of the issuer.

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

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Available on EDGAR 09/04/2026 - 04:05 PM EDT Accepted by SEC EDGAR 09/04/2026 - 04:05 PM EDT Learn about SEC filing dates

SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

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:			3235-0104
Estimated average burden
hours per response:			0.5

1. Name and Address of Reporting Person^*

Cook Brian Michael

(Last) (First) (Middle)

103 NORTHPARK BOULEVARD, SUITE 300

(Street)

COVINGTON LOUISIANA 70433

(City) (State) (Zip)

UNITED STATES

(Country)

2. Date of Event Requiring Statement (Month/Day/Year)
09/01/2026

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

3a. Foreign Trading Symbol

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

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

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	See Remarks

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

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

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Stock	140,793	D

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

Remarks:

Executive Vice President and Chief Accounting Officer Exhibit List - Exhibit 24.1 - Power of Attorney

	/s/ Beth A. LaBrosse, as Attorney-in-Fact for Brian Michael Cook	09/04/2026
	** 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 5 (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 3: SEC 1473 (03-26)