LandBridge Company LLC (LB) ownership: Top institutional holder: FIRST MANHATTAN CO. LLC. ($487.30M). Insider activity: Net Seller (0 buys, 3 sells). 3 recent congressional STOCK Act disclosures. SEC EDGAR first-party data.
| Holder | Shares | Market Value | Reported |
|---|---|---|---|
| FIRST MANHATTAN CO. LLC. | 7057228.00 | $487.30M | 2026-03-31 |
| HORIZON KINETICS ASSET MANAGEMENT LLC | 5657134.00 | $390.63M | 2026-03-31 |
| BlackRock Fund Advisors | 4518330.00 | $297.49M | 2016-12-31 |
| MORGAN STANLEY | 1475827.00 | $101.91M | 2026-03-31 |
| FMR LLC | 1334828.00 | $92.17M | 2026-03-31 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 1239898.00 | $85.61M | 2026-03-31 |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | 887466.00 | $61.28M | 2026-03-31 |
| UBS Group AG | 633169.00 | $43.72M | 2026-03-31 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| Sell | null | 2026-03-06 | |
| Sell | null | 2026-03-04 | |
| Sell | null | 2026-03-02 |
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Institutional data from SEC Form 13F. Insider data from SEC Form 4. Congressional data from STOCK Act disclosures. Not personalized investment advice.