David N. Capobianco - 07 Aug 2026 Form 4 Insider Report for LandBridge Co LLC (LB)

Reporting relationship: Director, 10%+ Owner
Issuer ticker: LB
Reported as of: 07 Aug 2026
Net transaction value: -$93,812,500
SEC form: 4
Accepted by SEC: 11 Aug 2026, 21:40:29 UTC
Prior SEC filing: 22 Jun 2026
Source filing: View source filing
Reporting owner signature: /s/ David N. Capobianco

Key filing fact

David N. Capobianco filed Form 4 for LandBridge Co LLC (LB) on 11 Aug 2026.

Key facts

This page summarizes David N. Capobianco's Form 4 filing for LandBridge Co LLC (LB).
4 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 11 Aug 2026, 21:40.

Change

Previous filing in this sequence was filed on 22 Jun 2026.
Current net transaction value: -$93,812,500.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001298438 Primary reporting owner

Capobianco David N

Relationship: Director, 10%+ Owner
Address: C/O LANDBRIDGE COMPANY LLC, 5555 SAN FELIPE STREET, SUITE 1200, HOUSTON
Signature: /s/ David N. Capobianco
Signature date: 11 Aug 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

LB transaction

Class B shares

Other

Transaction value
Shares: -1,250,000
Change %: -2.6%
Price: $0.000000^*
Shares after: 47,168,908
Date: 07 Aug 2026
Ownership: See Footnote
Footnotes: F1, F2, F3, F4

LB transaction

Class A shares

Conversion of derivative security

Transaction value
Shares: +1,250,000
Change %
Price: $0.000000^*
Shares after: 1,250,000
Date: 07 Aug 2026
Ownership: See Footnote
Footnotes: F1, F2, F4

LB transaction

Class A shares

Sale

Transaction value: $93,812,500
Shares: -1,250,000
Change %: -100%
Price: $75.05
Shares after: 0
Date: 07 Aug 2026
Ownership: See Footnote
Footnotes: F2, F4

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

LB transaction Derivative

DBR Land Holdings LLC Units

Conversion of derivative security

Transaction value
Shares: -1,250,000
Change %: -2.6%
Price: $0.000000^*
Shares after: 47,168,908
Date: 07 Aug 2026
Ownership: See Footnote
Underlying class: Class A Shares
Underlying amount: 1,250,000
Exercise price
Footnotes: F1, F2, F3, F4

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 4 footnotes

Footnote F1

Pursuant to the Amended and Restated Limited Liability Company Agreement of DBR Land Holdings LLC ("OpCo"), each unit representing membership interests in OpCo ("OpCo Units") (together with the delivery for no consideration of an equal number of Class B shares representing limited liability company interests ("Class B Shares") in LandBridge Company LLC (the "Issuer")) may be redeemed for an equal number of newly issued Class A shares representing limited liability company interests in the Issuer ("Class A Shares") or for cash, at the Issuer's election, subject to satisfaction of certain requirements. OpCo Units do not expire. Class B Shares do not represent economic interests in the Issuer.

Footnote F2

In connection with the sale by LandBridge Holdings LLC ("LandBridge Holdings") pursuant to Rule 144 of the Securities Act of 1933, as amended, through a broker-dealer, on August 7, 2026, LandBridge Holdings (i) redeemed 1,250,000 OpCo Units (together with the cancellation of 1,250,000 Class B Shares) for 1,250,000 Class A Shares and (ii) sold 1,250,000 Class A Shares at a price per share of $75.05.

Footnote F3

Reflects the cancellation of 73,141 OpCo Units and 102,987 OpCo Units (each, together with the cancellation of a corresponding number of Class B Shares) in lieu of the payment of a tax distribution by OpCo to the Issuer in excess of the Issuer's current income tax obligation for the three months ended March 31, 2026 and June 30, 2026, respectively. The number of cancelled OpCo Units was determined based on the Class A Share price as of the tax distribution date.

Footnote F4

LandBridge Holdings is ultimately controlled by the Reporting Person. As a result of the foregoing, the Reporting Person may exercise voting and dispositive power over the Class B Shares held by LandBridge Holdings and may be deemed to be the beneficial owner thereof. The Reporting Person disclaims beneficial ownership of OpCo Units and Class B Shares in excess of his pecuniary interest therein, if any.