Insider · CIK 0001298438
David N Capobianco
Files at LB (LandBridge Co LLC), WBI (WaterBridge Infrastructure LLC). First filing May 28, 2025, latest Aug 11, 2026.
In brief
David N Capobianco files SEC Form 4 as director and 10% owner at LB (LandBridge Co LLC), and also at WBI (WaterBridge Infrastructure LLC). Since May 28, 2025, David N Capobianco has reported 0 open-market buys worth $0 and 4 open-market sells worth $589M, the latest filed on Aug 11, 2026.
A track record needs three past buys with six months of prices behind them; David N Capobianco has 0, so none is measured yet.
The newest scored trade: sold $94M of LB on Aug 7, 2026, filed Aug 11, 2026, scored 68 (notable). In the last 12 months: 0 buys worth $0 and 3 sells worth $446M.
Where the trades landed
Last year at the 2 companies this insider has traded most, with each buy and sell on the bar it happened.
LB: LandBridge Co LLC
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™
WBI: WaterBridge Infrastructure LLC
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™
Signals
This insider’s open-market buys and sells, scored.
| Score | Company | Value | Holdings | Price context | Filed |
|---|---|---|---|---|---|
| 68Notable | LandBridge Co LLC | $94M 1,250,000 shares | -100% | +71% from low-11% from high | |
| 75Notable | WaterBridge Infrastructure LLC | $177M 5,894,826 shares | -75% | +60% from low-10% from high | |
| 75Notable | LandBridge Co LLC | $175M 2,500,000 shares | -100% | +27% from low-28% from high | |
| 68Notable | LandBridge Co LLC | $143M 1,900,000 shares | -100% | +128% from low-7% from high |
Transactions
Every row this insider has filed, 20 in all, newest first.
| Date | Company | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Aug 7, 2026 | LB LandBridge Co LLC | JOther Class B sharesindirect: See Footnote | -1,250,000 | $0.00 | $0 | 47,168,908 | Aug 11, 2026 |
| Aug 7, 2026 | LB LandBridge Co LLC | CConversion Class A sharesindirect: See Footnote | +1,250,000 | $0.00 | $0 | 1,250,000 | Aug 11, 2026 |
| Aug 7, 2026 | LB LandBridge Co LLC | SOpen-market sale Class A sharesindirect: See Footnote | -1,250,000 | $75.05 | $94M | 0 | Aug 11, 2026 |
| Aug 7, 2026 | LB LandBridge Co LLC | CConversion DBR Land Holdings LLC Unitsderivativeindirect: See Footnote | -1,250,000 | $0.00 | $0 | 47,168,908 | Aug 11, 2026 |
| Jun 22, 2026 | WBI WaterBridge Infrastructure LLC | JOther Class B sharesindirect: See Footnotes | -4,464,012 | $0.00 | $0 | 51,762,663 | Jun 22, 2026 |
| Jun 22, 2026 | WBI WaterBridge Infrastructure LLC | CConversion Class A sharesindirect: See Footnotes | +4,464,012 | $0.00 | $0 | 7,875,747 | Jun 22, 2026 |
| Jun 22, 2026 | WBI WaterBridge Infrastructure LLC | SOpen-market sale Class A sharesindirect: See Footnotes | -5,894,826 | $30.05 | $177M | 1,980,921 | Jun 22, 2026 |
| Jun 22, 2026 | WBI WaterBridge Infrastructure LLC | CConversion WBI Operating LLC Unitsderivativeindirect: See Footnotes | -4,464,012 | $0.00 | $0 | 51,762,663 | Jun 22, 2026 |
| May 6, 2026 | WBI WaterBridge Infrastructure LLC | JOther Class B Sharesindirect: See Footnotes | -2,456,248 | $0.00 | $0 | 56,226,677 | May 8, 2026 |
| May 6, 2026 | WBI WaterBridge Infrastructure LLC | JOther OpCo Unitsderivativeindirect: See Footnotes | -2,456,248 | $0.00 | $0 | 56,226,677 | May 8, 2026 |
| Nov 18, 2025 | LB LandBridge Co LLC | JOther Class B sharesindirect: See Footnote | -2,500,000 | $0.00 | $0 | 48,593,505 | Nov 20, 2025 |
| Nov 18, 2025 | LB LandBridge Co LLC | CConversion Class A sharesindirect: See Footnote | +2,500,000 | $0.00 | $0 | 2,500,000 | Nov 20, 2025 |
| Nov 18, 2025 | LB LandBridge Co LLC | SOpen-market sale Class A sharesindirect: See Footnote | -2,500,000 | $70.00 | $175M | 0 | Nov 20, 2025 |
| Nov 18, 2025 | LB LandBridge Co LLC | CConversion DBR Land Holdings LLC Unitsderivativeindirect: See Footnote | -2,500,000 | $0.00 | $0 | 48,593,505 | Nov 20, 2025 |
| May 23, 2025 | LB LandBridge Co LLC | JOther Class B sharesindirect: See Footnote | -1,900,000 | $0.00 | $0 | 51,241,496 | May 28, 2025 |
| May 23, 2025 | LB LandBridge Co LLC | CConversion Class A sharesindirect: See Footnote | +1,900,000 | $0.00 | $0 | 1,900,000 | May 28, 2025 |
| May 23, 2025 | LB LandBridge Co LLC | SOpen-market sale Class A sharesindirect: See Footnote | -1,900,000 | $75.25 | $143M | 0 | May 28, 2025 |
| May 23, 2025 | LB LandBridge Co LLC | CConversion DBR Land Holdings LLC Unitsderivativeindirect: See Footnote | -1,900,000 | $0.00 | $0 | 51,241,496 | May 28, 2025 |
| Dec 19, 2024 | LB LandBridge Co LLC | DDisposition to issuer Class B sharesindirect: See Footnote | -2,498,751 | $60.03 | $150M | 53,227,852 | Dec 23, 2024 |
| Dec 19, 2024 | LB LandBridge Co LLC | DDisposition to issuer DBR Land Holdings LLC Unitsderivativeindirect: See Footnote | -2,498,751 | $60.03 | $150M | 53,227,852 | Dec 23, 2024 |
Questions about David N Capobianco
Answered from the filings on this page, as of the latest one.
Is David N Capobianco buying or selling?
In the last 12 months David N Capobianco reported 0 open-market buys worth $0 and 3 open-market sells worth $446M on SEC Form 4; the latest was sold $94M of LB on Aug 7, 2026. Grants, option exercises and tax withholding are not counted.
How did David N Capobianco's past buys perform?
Not measured yet. InsiderTell needs three past buys with six months of prices to publish a track record, and David N Capobianco has 0.
Where does David N Capobianco file Form 4?
David N Capobianco has filed Form 4 at LB (LandBridge Co LLC); WBI (WaterBridge Infrastructure LLC). A Form 4 is required of officers, directors and holders of more than 10% of a share class within two business days of a trade.
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.