[SCHEDULE 13G/A] LandBridge Co LLC SEC Filing

Rhea-AI Filing Summary

LandBridge Co LLC received an updated Schedule 13G/A (Amendment No. 2) from First Manhattan Co. LLC, FMC Group Holdings LP, and First Manhattan Management LLC, reporting beneficial ownership of 6,668,804 Class A shares, equal to 26.3% of the class as of 10/31/2025.

The filing lists 38,236 shares with sole voting and dispositive power and 6,630,568 shares with shared voting and dispositive power. The signatories certify the securities were acquired and are held in the ordinary course of business and not for the purpose or effect of changing or influencing control.

Insights

Equity ownership & governance analyst

Large passive stake disclosed: 26.3% held across First Manhattan entities.

The disclosure shows First Manhattan-affiliated entities collectively beneficially own 6,668,804 LandBridge Class A shares, representing 26.3% of the class as of 10/31/2025. Voting and dispositive authority is split: 38,236 sole and 6,630,568 shared, indicating most authority is exercised jointly.

The use of Schedule 13G and the certification indicate the position is reported as being held in the ordinary course, not to influence control. While the stake size is significant, the filing itself is administrative; any impact depends on future holder actions, which are not addressed here.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 2)

LandBridge Co LLC

(Name of Issuer)

Class A shares, representing limited liability company interests

(Title of Class of Securities)

514952100

(CUSIP Number)

10/31/2025

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

SCHEDULE 13G

CUSIP No. 514952100

1

Names of Reporting Persons

FIRST MANHATTAN CO. LLC.

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 38,236.00
6	Shared Voting Power 6,630,568.00
7	Sole Dispositive Power 38,236.00
8	Shared Dispositive Power 6,630,568.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

6,668,804.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

26.3 %

12

Type of Reporting Person (See Instructions)

IA

SCHEDULE 13G

CUSIP No. 514952100

1

Names of Reporting Persons

FMC Group Holdings LP

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 38,236.00
6	Shared Voting Power 6,630,568.00
7	Sole Dispositive Power 38,236.00
8	Shared Dispositive Power 6,630,568.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

6,668,804.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

26.3 %

12

Type of Reporting Person (See Instructions)

PN, HC

SCHEDULE 13G

CUSIP No. 514952100

1

Names of Reporting Persons

First Manhattan Management LLC

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 38,236.00
6	Shared Voting Power 6,630,568.00
7	Sole Dispositive Power 38,236.00
8	Shared Dispositive Power 6,630,568.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

6,668,804.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

26.3 %

12

Type of Reporting Person (See Instructions)

HC

SCHEDULE 13G

Item 1.
(a)	Name of issuer: LandBridge Co LLC
(b)	Address of issuer's principal executive offices: 5555 San Felipe Street, Suite 1200, Houston, TEXAS, 77056.
Item 2.
(a)	Name of person filing: First Manhattan Co. LLC FMC Group Holdings LP First Manhattan Management LLC Each a "Filer"
(b)	Address or principal business office or, if none, residence: The address of each Filer is 399 Park Avenue, 28th Floor, New York, NY 10022.
(c)	Citizenship: The citizenship for each Filer is the following: First Manhattan Co. LLC - Delaware FMC Group Holdings LP - Delaware First Manhattan Management LLC - Delaware
(d)	Title of class of securities: Class A shares, representing limited liability company interests
(e)	CUSIP No.: 514952100
Item 3.	If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)	Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)	Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)	Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)	Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)	An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)	An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)	A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)	A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)	A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)	A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:
(k)	Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.	Ownership
(a)	Amount beneficially owned: See Item 9 of the cover page for each Filer.
(b)	Percent of class: See Item 11 of the cover page for each Filer.
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: See Item 5 of the cover page for each Filer.
	(ii) Shared power to vote or to direct the vote: See Item 6 of the cover page for each Filer.
	(iii) Sole power to dispose or to direct the disposition of: See Item 7 of the cover page for each Filer.
	(iv) Shared power to dispose or to direct the disposition of: See Item 8 of the cover page for each Filer.
Item 5.	Ownership of 5 Percent or Less of a Class.
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	Not Applicable
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	Not Applicable
Item 8.	Identification and Classification of Members of the Group.
	Not Applicable
Item 9.	Notice of Dissolution of Group.
	Not Applicable

Item 10.

Certifications:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under § 240.14a-11.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

FIRST MANHATTAN CO. LLC.

Signature:	Jeremy Covino
Name/Title:	Chief Compliance Officer
Date:	11/07/2025

FMC Group Holdings LP

Signature:	Andrew Aspen
Name/Title:	Authorized Signatory
Date:	11/07/2025

First Manhattan Management LLC

Signature:	Andrew Aspen
Name/Title:	Authorized Signatory
Date:	11/07/2025