Oceaneering International Inc. (OII) Ownership & Trading Activity
Institutional holders, insider transactions, and congressional trades for OII. 13F holdings as of 2026-03-31.
Top Institutional Holders
| Institution | Shares | Value | Change |
|---|---|---|---|
| BlackRock, Inc. | 16,348,842 | $580M | INCREASED |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 7,578,921 | $269M | NEW |
| BROWN ADVISORY INC | 5,788,601 | $205M | DECREASED |
| STATE STREET CORP | 5,034,196 | $179M | INCREASED |
| VANGUARD CAPITAL MANAGEMENT LLC | 4,478,763 | $159M | NEW |
Recent Insider Trades
| Insider | Type | Shares | Value | Date |
|---|---|---|---|---|
| Roderick A. Larson (President and CEO) | SELL | 5,000 | $191K | 2026-05-18 |
| William B Berry (Director) | AWARD | 4,576 | 2026-05-15 | |
| Karen H Beachy (Director) | AWARD | 4,576 | 2026-05-15 | |
| Deanna L Goodwin (Director) | AWARD | 4,576 | 2026-05-15 | |
| Kevin M Mcevoy (Director) | AWARD | 6,729 | 2026-05-15 |
Full institutional holdings, insider history, and congressional trades for Oceaneering International Inc. on SentiSense.