Tidewater Inc
Ownership
Ownership Structure
Who owns Tidewater Inc (TDW)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 92.4% of the shares are freely tradable; institutional investors hold 109.7%.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| BlackRock Inc | 14.56 | 7,244,738 | +5.0 | 03/31/2026 |
| Neuberger Berman Group LLC | 6.57 | 3,271,371 | -11.8 | 03/31/2026 |
| T. Rowe Price Associates, Inc. | 6.45 | 3,207,302 | -26.3 | 03/31/2026 |
| Robotti Robert | 5.84 | 2,906,380 | -0.5 | 06/30/2026 |
| Vanguard Portfolio Management, LLC | 5.28 | 2,626,645 | +0.0 | 03/31/2026 |
| Dimensional Fund Advisors, Inc. | 4.18 | 2,081,880 | +13.2 | 06/30/2026 |
| State Street Corp | 3.92 | 1,948,425 | +2.4 | 03/31/2026 |
| Vanguard Capital Management, LLC | 3.90 | 1,942,871 | +0.0 | 03/31/2026 |
| Baillie Gifford & Co Limited. | 3.36 | 1,670,774 | +154.9 | 06/30/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| iShares Core S&P Small-Cap ETF | 5.66 | 2,813,896 | +0.0 | 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 |
|---|---|---|---|---|---|
| Robotti Robert | Director | 2,202,690 | 190,973,223 $ | Sep 16, 2026 | indirect |
| Traub Kenneth | Director | 63,521 | 5,507,271 $ | Sep 2, 2026 | direct |
| Rubio Samuel R | EVP, CFO & CAO | 33,214 | 2,879,654 $ | Aug 12, 2026 | indirect |
| Hudson Daniel A. | EVP, CLO & Corporate Secretary | 33,029 | 2,863,614 $ | Sep 2, 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 |
|---|---|---|---|---|---|---|
| Sep 16, 2026 | Robotti Robert | Director | Sell | 3,605 | 89.85 | 323,907 |
| Sep 16, 2026 | Robotti Robert | Director | Sell | 6,695 | 89.85 | 601,542 |
| Sep 16, 2026 | Robotti Robert | Director | Other | 1,951 | 0.00 | – |
| Sep 2, 2026 | Hudson Daniel A. | EVP, CLO & Corporate Secretary | Sell | 15,000 | 99.08 | 1,486,200 |
| Sep 2, 2026 | Traub Kenneth | Director | Sell | 10,000 | 99.00 | 990,000 |
| Aug 20, 2026 | Hudson Daniel A. | EVP, CLO & Corporate Secretary | Other | 200 | 0.00 | – |
| Aug 12, 2026 | Rubio Samuel R | EVP, CFO & CAO | Sell | 17,705 | 91.56 | 1,621,070 |
| Aug 10, 2026 | Hudson Daniel A. | EVP, CLO & Corporate Secretary | Sell | 5,000 | 89.01 | 445,050 |
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 18, 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.