OCEANEERING INTL INC (OII) Institutional Ownership and Insiders Activity

OCEANEERING INTL INC (OII) is widely held by institutional investors, with 360 firms reporting positions valued at approximately $4.10B based on SEC Form 13F filings for the quarter ended June 30, 2026.

Blackrock, Inc. is the largest disclosed holder, reporting approximately $664.66M in OII holdings in its latest filing.

Recent insider activity includes 5 tracked Form 4 transactions over the last three months, reflecting ongoing executive and director trading activity.