존 마샬 Bancorp, Inc.
US ˙ NasdaqCM ˙ US47805L1017

SecurityJMSB / John Marshall Bancorp, Inc.
InstitutionState Street Corp
Latest Disclosed Ownership217,398 shares
Latest Disclosed Value $ 4,408,831
State Street Corp reports 1.97% increase in ownership of JMSB / John Marshall Bancorp, Inc.

On May 15, 2026 - State Street Corp filed a 13F-HR form disclosing ownership of 217,398 shares of John Marshall Bancorp, Inc. (US:JMSB) valued at $4,408,831 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 213,201 shares of John Marshall Bancorp, Inc.. This represents a change in shares of 1.97% during the quarter. The current value of the position is $4,656,665 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 JOHN MARSHALL BANCORP COM 47805L101 217,398 4,197 1.97 4,409 3.45 0.0002
2026-02-13 2025-12-31 13F JOHN MARSHALL BANCORP COM 47805L101 213,201 323 0.15 4,262 1.00 0.0001
2025-11-14 2025-09-30 13F JOHN MARSHALL BANCORP COM 47805L101 212,878 701 0.33 4,219 5.66 0.0001
2025-08-14 2025-06-30 13F JOHN MARSHALL BANCORP COM 47805L101 212,177 1,443 0.68 3,993 14.71 0.0001
2025-05-15 2025-03-31 13F JOHN MARSHALL BANCORP COM 47805L101 210,734 -2,213 -1.04 3,481 -18.57 0.0001
2025-02-14 2024-12-31 13F JOHN MARSHALL BANCORP COM 47805L101 212,947 13,648 6.85 4,276 8.45 0.0002
2024-11-14 2024-09-30 13F JOHN MARSHALL BANCORP COM 47805L101 199,299 2,903 1.48 3,942 13.50 0.0002
2024-08-14 2024-06-30 13F JOHN MARSHALL BANCORP COM 47805L101 196,396 610 0.31 3,474 -1.00 0.0002
2024-05-15 2024-03-31 13F JOHN MARSHALL BANCORP COM 47805L101 195,786 2,942 1.53 3,508 -19.36 0.0002
2024-02-14 2023-12-31 13F JOHN MARSHALL BANCORP COM 47805L101 192,844 3,568 1.89 4,351 28.77 0.0002
2023-11-14 2023-09-30 13F JOHN MARSHALL BANCORP COM 47805L101 189,276 5,251 2.85 3,379 -9.61 0.0002
2023-08-14 2023-06-30 13F JOHN MARSHALL BANCORP COM 47805L101 184,025 12,014 6.98 3,737 0.59 0.0002
2023-05-15 2023-03-31 13F JOHN MARSHALL BANCORP COM 47805L101 172,011 7,155 4.34 3,715 -21.69 0.0002
2023-05-15 2022-12-31 13F/A-99 JOHN MARSHALL BANCORP COM 47805L101 164,856 4,882 3.05 4,745 20.74 0.0003
2023-05-15 2022-12-31 13F JOHN MARSHALL BANCORP COM 47805L101 164,856 4,882 4,745 0.0003
2022-11-15 2022-09-30 13F JOHN MARSHALL BANCORP COM 47805L101 159,974 56,004 53.87 3,929 67.69 0.0002
2022-08-15 2022-06-30 13F JOHN MARSHALL BANCORP COM 47805L101 103,970 103,970 2,343 0.0001
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.