Holly Kriendler - 24 Feb 2026 Form 4 Insider Report for OCEANEERING INTERNATIONAL INC (OII)

Role: SVP, Chief H.R. Officer
Signature: /s/ Jennifer F. Simons, Attorney-in-Fact for Holly Kriendler
Issuer symbol: OII
Transactions as of: 24 Feb 2026
Net transactions value: -$1,084,124
Form type: 4
Filing time: 26 Feb 2026, 17:43:51 UTC
Previous filing: 24 Feb 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Kriendler Holly	SVP, Chief H.R. Officer	5875 N. SAM HOUSTON PARKWAY W., SUITE 400, HOUSTON	/s/ Jennifer F. Simons, Attorney-in-Fact for Holly Kriendler	26 Feb 2026	0001801361

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	OII	Common Stock	Tax liability	$150,667	-4,048	-7.6%	$37.22	49,507	24 Feb 2026	Direct
transaction	OII	Common Stock	Sale	$717,134	-19,007	-38%	$37.73	30,500	25 Feb 2026	Direct	F1
transaction	OII	Common Stock	Sale	$216,323	-5,798	-19%	$37.31	24,702	26 Feb 2026	Direct

* 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 $37.700 to $37.955, 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 $37.700 to $37.955, 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.