Oceaneering International INC Schedule 13G passive stakes

Brown Advisory Inc. and its affiliates have reported beneficial ownership of 5.09% of Oceaneering International, Inc.'s common stock as of June 30, 2026.

State Street Corporation has reported beneficial ownership of 5,034,196 shares, representing 5.1% of the outstanding common stock of Oceaneering International Inc., as of March 31, 2026.

Vanguard Capital Management has reported beneficial ownership of 5.26% of Oceaneering International's common stock as of March 31, 2026.

Vanguard Portfolio Management has reported a beneficial ownership of 7.7% in Oceaneering International Inc. common stock as of March 31, 2026.

The Vanguard Group has amended its Schedule 13G filing for Oceaneering International Inc, reporting 0% beneficial ownership following an internal realignment.

BlackRock, Inc. has reported an increased beneficial ownership of 14.2% in Oceaneering International Inc., holding over 14.2 million shares of common stock.

Investment adviser EARNEST Partners LLC has filed an amended Schedule 13G, reporting a 4.2% beneficial ownership stake in Oceaneering International Inc. as of March 31, 2025.

Brown Advisory Inc. and its affiliated entities have filed an amended Schedule 13G, reporting a collective beneficial ownership of 6.6% in Oceaneering International, Inc. as of March 31, 2025.

Brown Advisory Inc. and its affiliated entities have reported a collective beneficial ownership of 5.1% of Oceaneering International, Inc.'s common stock as of December 31, 2024.

State Street Corporation has filed a Schedule 13G, reporting a passive beneficial ownership of 4.9% of Oceaneering International Inc.'s common stock as of December 31, 2024.