Leonardo P. Granato - 24 Feb 2026 Form 4 Insider Report for OCEANEERING INTERNATIONAL INC (OII)

Role: SVP, IMDS
Signature: /s/ Jennifer F. Simons, Attorney-in-Fact for Leonardo P. Granato
Issuer symbol: OII
Transactions as of: 24 Feb 2026
Net transactions value: -$473,247
Form type: 4
Filing time: 26 Feb 2026, 17:41:26 UTC
Previous filing: 24 Feb 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
GRANATO LEONARDO P	SVP, IMDS	5875 N. SAM HOUSTON PARKWAY W., SUITE 400, HOUSTON	/s/ Jennifer F. Simons, Attorney-in-Fact for Leonardo P. Granato	26 Feb 2026	0001949218

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	23,899	24 Feb 2026	Direct
transaction	OII	Common Stock	Sale	$315,310	-8,415	-35%	$37.47	15,484	25 Feb 2026	Direct	F1
transaction	OII	Common Stock	Sale	$45,732	-1,236	-8%	$37.00	14,248	26 Feb 2026	Direct
transaction	OII	Common Stock	Sale	$7,543	-202	-100%	$37.34	0	26 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 $37.45 to $37.51, 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 $37.45 to $37.51, 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.