Bank of Marin Bancorp
US ˙ NasdaqGS ˙ US0634251021

SecurityBMRC / Bank of Marin Bancorp
InstitutionCwm, Llc
Latest Disclosed Ownership6,648 shares
Latest Disclosed Value $ 170,388
Cwm, Llc reports 1.34% increase in ownership of BMRC / Bank of Marin Bancorp

On May 14, 2026 - Cwm, Llc filed a 13F-HR form disclosing ownership of 6,648 shares of Bank of Marin Bancorp (US:BMRC) valued at $170,388 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 26, 2026 disclosing 6,560 shares of Bank of Marin Bancorp. The current value of the position is $171,385 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)
2026-05-14 2026-03-31 13F BANK OF MARIN BANCORP COM 063425102 6,648 88 1.34 170 0.0004
2026-01-26 2025-12-31 13F BANK MARIN BANCORP COM 063425102 6,560 184 2.89 0 0.0005
2025-10-15 2025-09-30 13F BANK MARIN BANCORP COM 063425102 6,376 2,481 63.70 0 0.0005
2025-07-25 2025-06-30 13F BANK MARIN BANCORP COM 063425102 3,895 1,142 41.48 0 0.0003
2025-05-01 2025-03-31 13F BANK MARIN BANCORP COM 063425102 2,753 630 29.67 0 0.0002
2025-02-04 2024-12-31 13F BANK MARIN BANCORP COM 063425102 2,123 -2 -0.09 0 0.0002
2024-10-08 2024-09-30 13F BANK MARIN BANCORP COM 063425102 2,125 181 9.31 0 0.0002
2024-07-10 2024-06-30 13F BANK MARIN BANCORP COM 063425102 1,944 1,096 129.25 0 0.0001
2024-04-05 2024-03-31 13F BANK MARIN BANCORP COM 063425102 848 3 0.36 0 0.0001
2024-02-01 2023-12-31 13F BANK MARIN BANCORP COM 063425102 845 -22 -2.54 0 0.0001
2023-10-11 2023-09-30 13F BANK MARIN BANCORP COM 063425102 867 -12 -1.37 0 0.0001
2023-08-03 2023-06-30 13F BANK MARIN BANCORP COM 063425102 879 858 4,085.71 0 0.0001
2023-05-01 2023-03-31 13F BANK MARIN BANCORP COM 063425102 21 21 0 0.0000
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.