CHRISTOPHER J. DYER - 24 Feb 2026 Form 4 Insider Report for OCEANEERING INTERNATIONAL INC (OII)

Role: SVP, OPGroup
Signature: /s/ Jennifer F. Simons, Attorney-in-Fact for Christopher J. Dyer
Issuer symbol: OII
Transactions as of: 24 Feb 2026
Net transactions value: -$333,143
Form type: 4
Filing time: 26 Feb 2026, 17:40:18 UTC
Previous filing: 24 Feb 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
DYER CHRISTOPHER J	SVP, OPGroup	5875 N. SAM HOUSTON PARKWAY W., SUITE 400, HOUSTON	/s/ Jennifer F. Simons, Attorney-in-Fact for Christopher J. Dyer	26 Feb 2026	0001950059

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	OII	Common Stock	Tax liability	$104,663	-2,812	-11%	$37.22	21,902	24 Feb 2026	Direct
transaction	OII	Common Stock	Sale	$228,480	-6,000	-27%	$38.08	15,902	25 Feb 2026	Direct	F1
holding	OII	Common Stock						8,007	24 Feb 2026	By 401(k) plan.

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $38.07 to $38.12, inclusive. The issuer undertakes to provide, upon request by the SEC staff or a security holder of the issuer, full information regarding the number of shares purchased at each separate price within the range set forth in this Footnote to this Form 4.

Content

The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $38.07 to $38.12, inclusive. The issuer undertakes to provide, upon request by the SEC staff or a security holder of the issuer, full information regarding the number of shares purchased at each separate price within the range set forth in this Footnote to this Form 4.