Oceaneering International Inc
OII- Exchange
- NYSE
- Industry
- Oil & Gas Field Services, NEC
- SEC CIK
- 0000073756
In the last 90 days, Oceaneering International Inc insiders filed 0 open-market purchases and 5 sales; 376 institutions reported holding it in 13F filings for Q2 2026, worth $4.22B in total; no superinvestor holds it.
Holders of 5% or more of OII
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Oceaneering International Inc, largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| BlackRock, Inc. | 13G/A | 14.20%14.3M shares | – | Jul 17, 20251 filing | Jul 17, 2025 | SEC |
| Brown Advisory Inc | 13G/A | 6.60%6.62M shares | +1.50 ppfrom 5.10% | Apr 10, 20252 filings | Apr 18, 2025 | SEC |
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
6 Schedule 13D and 13G filings on Oceaneering International Inc, newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Mar 27, 202611:08 AM ET | Vanguard Group Inc | 13G/A | 0.00%0 shares | –Below 5% | Mar 13, 2026 | SEC |
| Jul 17, 20258:12 PM ET | BlackRock, Inc. | 13G/A | 14.20%14.3M shares | – | Jun 30, 2025 | SEC |
| May 15, 202511:36 AM ET | Earnest Partners LLC | 13G/A | 4.20%4.22M shares | –Below 5% | Mar 31, 2025 | SEC |
| Apr 18, 20255:25 PM ET | Brown Advisory Incand 3 others | 13G/A | 6.60%6.62M shares | +1.50 ppfrom 5.10% | Mar 31, 2025 | SEC |
| Apr 10, 20253:34 PM ET | Brown Advisory Incand 3 others | 13G | 5.10%5.15M shares | New | Dec 31, 2024 | SEC |
| Feb 6, 20258:22 AM ET | State Street Corp | 13G | 4.90%4.99M shares | NewBelow 5% | Dec 31, 2024 | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell Oceaneering International Inc shares.
No Form 144 notices for Oceaneering International Inc are on file.