존 마샬 Bancorp, Inc.
US ˙ NasdaqCM ˙ US47805L1017

SecurityJMSB / John Marshall Bancorp, Inc.
InstitutionVanguard Group Inc
Latest Disclosed Ownership692,614 shares
Latest Disclosed Value $ 13,845,354
Vanguard Group Inc reports 6.61% increase in ownership of JMSB / John Marshall Bancorp, Inc.

On January 29, 2026 - Vanguard Group Inc filed a 13F-HR form disclosing ownership of 692,614 shares of John Marshall Bancorp, Inc. (US:JMSB) valued at $13,845,354 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 7, 2025 disclosing 649,667 shares of John Marshall Bancorp, Inc.. This represents a change in shares of 6.61% during the quarter. The current value of the position is $14,835,792 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)
2026-01-29 2025-12-31 13F JOHN MARSHALL BANCORP COM 47805L101 692,614 42,947 6.61 13,845 7.53 0.0002
2025-11-07 2025-09-30 13F JOHN MARSHALL BANCORP COM 47805L101 649,667 -5,309 -0.81 12,876 6.10 0.0002
2025-08-11 2025-06-30 13F JOHN MARSHALL BANCORP COM 47805L101 654,976 6,247 0.96 12,137 13.24 0.0002
2025-05-09 2025-03-31 13F JOHN MARSHALL BANCORP COM 47805L101 648,729 203 0.03 10,717 -17.70 0.0002
2025-02-11 2024-12-31 13F JOHN MARSHALL BANCORP COM 47805L101 648,526 2,062 0.32 13,022 1.84 0.0002
2024-11-13 2024-09-30 13F JOHN MARSHALL BANCORP COM 47805L101 646,464 21,826 3.49 12,787 17.39 0.0002
2024-08-13 2024-06-30 13F JOHN MARSHALL BANCORP COM 47805L101 624,638 6,595 1.07 10,894 -1.64 0.0002
2024-05-10 2024-03-31 13F JOHN MARSHALL BANCORP COM 47805L101 618,043 7,615 1.25 11,075 -19.58 0.0002
2024-03-11 2023-12-31 13F/A-1 JOHN MARSHALL BANCORP COM 47805L101 610,428 34,879 6.06 13,771 34.05 0.0003
2024-02-14 2023-12-31 13F JOHN MARSHALL BANCORP COM 47805L101 610,428 34,879 13,771 0.0003
2023-12-18 2023-09-30 13F/A-1 JOHN MARSHALL BANCORP COM 47805L101 575,549 1,465 0.26 10,274 -10.93 0.0003
2023-11-14 2023-09-30 13F JOHN MARSHALL BANCORP COM 47805L101 575,549 1,465 10,274 0.0000
2023-08-14 2023-06-30 13F JOHN MARSHALL BANCORP COM 47805L101 574,084 592 0.10 11,533 -6.89 0.0003
2023-07-14 2023-03-31 13F/A-1 JOHN MARSHALL BANCORP COM 47805L101 573,492 3,655 0.64 12,387 -24.46 0.0003
2023-05-15 2023-03-31 13F JOHN MARSHALL BANCORP COM 47805L101 573,492 3,655 12,387 0.0001
2023-02-10 2022-12-31 13F JOHN MARSHALL BANCORP COM 47805L101 569,837 1,853 0.33 16,400 17.56 0.0004
2022-11-14 2022-09-30 13F JOHN MARSHALL BANCORP COM 47805L101 567,984 -1,024 -0.18 13,950 8.77 0.0004
2022-08-12 2022-06-30 13F JOHN MARSHALL BANCORP COM 47805L101 569,008 569,008 12,825 0.0004
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.