Oceaneering International Inc
Ownership
Ownership Structure
Who owns Oceaneering International Inc (OII)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 98.4% of the shares are freely tradable; institutional investors hold 106.3%.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| BlackRock Inc | 16.43 | 16,348,842 | +2.2 | 03/31/2026 |
| Vanguard Portfolio Management, LLC | 7.61 | 7,578,921 | +0.0 | 03/31/2026 |
| Brown Advisory Holdings Inc | 5.82 | 5,788,601 | -22.1 | 03/31/2026 |
| State Street Corp | 5.06 | 5,034,196 | +8.3 | 03/31/2026 |
| Vanguard Capital Management, LLC | 4.50 | 4,478,763 | +0.0 | 03/31/2026 |
| American Century Companies Inc | 4.04 | 4,023,994 | +6.8 | 06/30/2026 |
| Earnest Partners LLC | 3.70 | 3,684,313 | -2.8 | 03/31/2026 |
| Dimensional Fund Advisors, Inc. | 3.56 | 3,546,908 | +2.5 | 06/30/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| iShares Core S&P Small-Cap ETF | 6.11 | 6,079,358 | +0.0 | 08/31/2026 |
| Avantis US Small Cap Value ETF | 3.63 | 3,613,391 | +0.1 | 08/31/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider holdings
| Person | Role | Shares | Value | As of | Type |
|---|---|---|---|---|---|
| Mcevoy M Kevin | Director | 134,133 | 6,196,945 $ | Jul 30, 2026 | direct |
| Murphy Paul B Jr | Director | 68,916 | 3,183,919 $ | Aug 7, 2026 | direct |
| Childress Earl | SVP, Chief Commercial Ofc. | 22,876 | 1,056,871 $ | Jul 30, 2026 | direct |
| Dyer Christopher J | SVP, OPGroup | 14,702 | 679,232 $ | Jul 30, 2026 | direct |
Holdings as of each person's most recent SEC Form 4 filing — excluding options and RSUs, which are not shares yet. Holdings may have changed between two filings.
Insiders
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Aug 7, 2026 | Murphy Paul B Jr | Director | Sell | 10,000 | 48.37 | 483,690 |
| Jul 30, 2026 | Mcevoy M Kevin | Director | Sell | 3,000 | 47.93 | 143,775 |
| Jul 30, 2026 | Dyer Christopher J | SVP, OPGroup | Sell | 1,200 | 47.65 | 57,180 |
| Jul 30, 2026 | Childress Earl | SVP, Chief Commercial Ofc. | Sell | 12,701 | 46.71 | 593,315 |
Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character. View all insider transactions →
Data as of: September 17, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.