Summary
Updated Aug 31, 2026
David N. Capobianco is Director, 10% Owner of LandBridge Co LLC (LB). 6 SEC Form 4 filings on record going back to 2024, most recently on 12 August 2026. Most recent open-market trade: sold $93.81M of LB on 12 August 2026. Lifetime open-market sales: $588.93M.
Recent Transactions
14Every recent SEC Form 4 transaction David N. Capobianco has reported, most recent first.
Trading Pattern
InsiderAlpha's records for David N. Capobianco go back to 2024: 6 primary Form 4 filings, an average of 2.0 per year. No transaction on record carries a Rule 10b5-1 flag - the filings look discretionary rather than pre-scheduled, which makes their timing more informative as a signal.
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades in the last 12 months at the companies David N. Capobianco files at. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
- LandBridge Holdings LLC - $268.81M of LB open-market activity in the last 12 months
- WaterBridge Resources LLC - $177.14M of WBI open-market activity in the last 12 months
- WBR Holdings LLC - $177.14M of WBI open-market activity in the last 12 months
- Five Point Energy Fund II AIV-VII LP - $175.00M of LB open-market activity in the last 12 months
- Energy Corp Devon - $52.74M of WBI open-market activity in the last 12 months
- James R. Crane - $6.00M of WBI open-market activity in the last 12 months
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
Frequently Asked Questions
Who is David N. Capobianco?
David N. Capobianco is a corporate insider, tracked as Director, 10% Owner of LandBridge Co LLC (LB). InsiderAlpha holds 6 primary Form 4 filings for them, the earliest from 2024, updated as new SEC EDGAR filings are processed.
How many SEC Form 4 filings has David N. Capobianco submitted recently?
2 primary Form 4 filings in the last 90 days, covering 2 companies.
Has David N. Capobianco been buying or selling stock?
Recorded transactions: 0 open-market purchases and 4 open-market sales ($588.93M) across all tracked filings.
Where can I see all of David N. Capobianco's SEC filings?
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
Learn More
Follow David N. Capobianco and every insider like them
A free account opens the full scored daily plan and every past day, a watchlist for any ticker, and 3 months of price history on every company page. No card.
Free plan available · Paid plans start with a 7-day free trial