Oceaneering officer Dyer proposes $57.2K share sale

The reported shares originated in restricted stock vesting, and the notice names Fidelity Brokerage Services LLC as broker.

Accepted by SEC EDGAR 07/30/2026 - 01:55 PM EDT Learn about SEC filing dates

Rhea-AI Filing Summary

Oceaneering International Inc. (OII) officer Christopher J. Dyer reported a proposed sale of 1,200 common shares, with an aggregate market value of $57,180 and an approximate sale date of July 30, 2026. The shares were acquired from the issuer through restricted stock vesting on February 24, 2026, as compensation; Fidelity Brokerage Services LLC is named as broker. Jennifer Ruchti signed as a duly authorized representative of Fidelity Brokerage Services LLC and attorney-in-fact for Christopher J. Dyer.

Key Figures

Proposed sale: 1,200 common shares Aggregate market value: $57,180 Shares outstanding: 99,529,645 shares +2 more

5 metrics

Proposed sale 1,200 common shares Christopher J. Dyer's reported proposed sale

Aggregate market value $57,180 For the 1,200 common shares listed for sale

Shares outstanding 99,529,645 shares Number of shares or other units outstanding in the securities information

Approximate sale date July 30, 2026 Reported proposed sale

Acquisition date February 24, 2026 Restricted stock vesting

Key Terms

Restricted Stock Vesting, Aggregate Market Value, attorney-in-fact

3 terms

Restricted Stock Vesting financial

"Nature of Acquisition Transaction: Restricted Stock Vesting"

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.

Aggregate Market Value financial

"Aggregate Market Value"

Aggregate market value is the combined price you would pay to buy all outstanding shares of a company or all companies in a group at current market prices — essentially the sum of each stock’s market capitalization. It matters to investors because it shows the overall size and weight of an investment or sector (like the total cost to buy every piece of a puzzle), helps compare scale across companies or markets, and influences index composition and risk exposure.

attorney-in-fact regulatory

"as attorney-in-fact for Christopher J. Dyer"

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.

How many OII shares did Christopher J. Dyer report for sale?

Christopher J. Dyer reported a proposed sale of 1,200 common shares of OII, with an aggregate market value of $57,180 and an approximate sale date of July 30, 2026.

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

See more from StockTitan in Google Search and AI answers. Adds StockTitan as a preferred source · opens Google

Add on Google Not now

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	0001950059
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	OCEANEERING INTERNATIONAL INC
SEC File Number	001-10945
Address of Issuer	5875 NORTH SAM HOUSTON PARKWAY WEST SUITE 400 HOUSTON TEXAS 77086
Phone	713-329-4500
Name of Person for Whose Account the Securities are To Be Sold	DYER CHRISTOPHER J
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	1200	57180.00	99529645	07/30/2026	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	02/24/2026	Restricted Stock Vesting	Issuer			1200	02/24/2026	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

Nothing to Report

144: Remarks and Signature

Remarks
Date of Notice	07/30/2026
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/ Jennifer Ruchti, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Christopher J. Dyer
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)