LandBridge Company LLC
US ˙ NYSE

SecurityLB / LandBridge Company LLC
InstitutionAdvisor Group Holdings, Inc.
Latest Disclosed Ownership14,880 shares
Latest Disclosed Value $ 1,027,458
Advisor Group Holdings, Inc. reports 1.57% decrease in ownership of LB / LandBridge Company LLC

On May 15, 2026 - Advisor Group Holdings, Inc. filed a 13F-HR form disclosing ownership of 14,880 shares of LandBridge Company LLC (US:LB) valued at $1,027,464 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 15,117 shares of LandBridge Company LLC. This represents a change in shares of -1.57% during the quarter. The current value of the position is $1,129,690 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F LANDBRIDGE CL A 514952100 14,880 -237 -1.57 1,027 38.78 0.0009
2026-02-17 2025-12-31 13F LANDBRIDGE CL A 514952100 15,117 12,605 501.79 741 456.39 0.0011
2025-11-14 2025-09-30 13F LANDBRIDGE CL A 514952100 2,512 -189 -7.00 133 -26.92 0.0002
2025-09-04 2025-06-30 13F/A-1 ANDBRIDGE CL A 514952100 2,701 301 12.54 183 5.81 0.0003
2025-08-13 2025-06-30 13F ANDBRIDGE CL A 514952100 2,875 475 187 0.0002
2025-05-12 2025-03-31 13F LANDBRIDGE CL A 514952100 2,400 -2,197 -47.79 173 -41.89 0.0004
2025-06-06 2024-12-31 13F/A-1 LANDBRIDGE CL A 514952100 4,597 1,912 71.21 297 181.90 0.0007
2025-02-07 2024-12-31 13F LANDBRIDGE CL A 514952100 4,887 2,202 249 0.0006
2024-11-13 2024-09-30 13F LANDBRIDGE CL A 514952100 2,685 2,685 105 0.0002
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.