Bank of Marin Bancorp
BMRC- Exchange
- Nasdaq
- Industry
- State Commercial Banks
- SEC CIK
- 0001403475
In the last 90 days, Bank of Marin Bancorp insiders filed 1 open-market purchase and 0 sales; 142 institutions reported holding it in 13F filings for Q2 2026, worth $299.8M in total; no superinvestor holds it.
13F holders, Q1 2026
Institutional positions in Bank of Marin Bancorp as of Mar 31, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 140
- +9 vs. Q4 2025
- Shares held
- 10.5M
- +1.26M (+13.6%) vs. Q4 2025
- Total value
- $270.3M
- +$28.9M (+12.0%) vs. Q4 2025
- New holders
- 20
- 43 more added
- Sold out
- 11
- 47 more reduced
2 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting BMRC on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 142 | $299.8M |
| Q1 2026 | 140 | $270.3M |
| Q4 2025 | 133 | $263.3M |
| Q3 2025 | 138 | $249.6M |
| Q2 2025 | 119 | $226.0M |
| Q1 2025 | 124 | $211.9M |
| Q4 2024 | 117 | $220.2M |
| Q3 2024 | 108 | $178.1M |
| Q2 2024 | 96 | $145.2M |
| Q1 2024 | 102 | $141.6M |
| Q4 2023 | 97 | $186.3M |
| Q3 2023 | 93 | $153.8M |
| Q2 2023 | 95 | $146.1M |
| Q1 2023 | 100 | $184.1M |
| Q4 2022 | 97 | $259.9M |
| Q3 2022 | 94 | $235.3M |
| Q2 2022 | 96 | $256.0M |
| Q1 2022 | 101 | $266.7M |
| Q4 2021 | 98 | $282.8M |
| Q3 2021 | 100 | $289.6M |
| Q2 2021 | 95 | $198.1M |
| Q1 2021 | 93 | $231.1M |
Institutions, Q1 2026
Shares, value and share of portfolio for each institution holding Bank of Marin Bancorp; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Fourthstone LLC | 41,834 | $1.07M | 0.18% | +32,734+359.7% | Added |
| Jane Street Group, LLC | 42,071 | $1.08M | 0.00% | −8,890−17.4% | Reduced |
| Millennium Management LLC | 46,550 | $1.19M | 0.00% | +37,818+433.1% | Added |
| United Capital Financial Advisers, LLC | 50,942 | $1.31M | 0.01% | +50,942 | New |
| Creative Planning | 56,992 | $1.46M | 0.00% | −5,003−8.1% | Reduced |
| Quantinno Capital Management LP | 59,476 | $1.52M | 0.00% | +10,142+20.6% | Added |
| Perigon Wealth Management, LLC | 61,081 | $1.57M | 0.03% | −218−0.4% | Reduced |
| Fisher Asset Management, LLC | 63,926 | $1.64M | 0.00% | +11,499+21.9% | Added |
| Goldman Sachs Group Inc | 68,741 | $1.76M | 0.00% | +17,514+34.2% | Added |
| Algebris (UK) Ltd | 75,315 | $1.93M | 0.14% | +75,315 | New |
| Bank of New York Mellon Corp | 77,699 | $1.99M | 0.00% | +5,154+7.1% | Added |
| Qube Research & Technologies Ltd | 78,090 | $2.00M | 0.00% | +67,652+648.1% | Added |
| Prudential Financial Inc | 79,072 | $2.03M | 0.00% | −18,430−18.9% | Reduced |
| Los Angeles Capital Management LLC | 90,412 | $2.32M | 0.01% | +90,412 | New |
| Michael B. Yongue | 97,046 | $2.49M | 1.81% | −7,000−6.7% | Reduced |
| Vanguard Fiduciary Trust Co | 106,797 | $2.74M | 0.00% | +106,797 | New |
| Vanguard Portfolio Management LLC | 110,474 | $2.83M | 0.00% | +110,474 | New |
| Acadian Asset Management LLC | 110,942 | $2.84M | 0.00% | −7,108−6.0% | Reduced |
| Westmount Partners, LLC | 115,484 | $2.96M | 0.73% | +925+0.8% | Added |
| AQR Capital Management LLC | 117,649 | $3.02M | 0.00% | −488−0.4% | Reduced |
| Renaissance Technologies LLC | 119,392 | $3.06M | 0.00% | +24,100+25.3% | Added |
| Kennedy Capital Management, Inc. | 123,280 | $3.16M | 0.07% | +2,232+1.8% | Added |
| Northern Trust Corp | 125,178 | $3.21M | 0.00% | +7,849+6.7% | Added |
| Charles Schwab Investment Management Inc | 125,385 | $3.21M | 0.00% | −3,628−2.8% | Reduced |
| Citadel Advisors LLC | 178,753 | $4.58M | 0.00% | +115,915+184.5% | Added |
| UBS Group AG | 199,677 | $5.12M | 0.00% | +159,853+401.4% | Added |
| Morgan Stanley | 240,431 | $6.16M | 0.00% | −21,765−8.3% | Reduced |
| Heartland Advisors Inc | 250,000 | $6.41M | 0.33% | +50,430+25.3% | Added |
| Hotchkis & Wiley Capital Management LLC | 260,596 | $6.68M | 0.02% | −9,570−3.5% | Reduced |
| Two Sigma Investments, LP | 266,577 | $6.83M | 0.01% | +126,910+90.9% | Added |
| State Street Corp | 340,004 | $8.71M | 0.00% | +3,207+1.0% | Added |
| Ameriprise Financial Inc | 374,883 | $9.61M | 0.00% | −6,672−1.7% | Reduced |
| Geode Capital Management, LLC | 390,301 | $10.0M | 0.00% | +4,474+1.2% | Added |
| Manufacturers Life Insurance Company, The | 458,812 | $11.8M | 0.01% | +8,758+1.9% | Added |
| HoldCo Asset Management, L.P. | 504,411 | $12.9M | 0.96% | 00.0% | Unchanged |
| Wellington Management Group LLP | 632,000 | $16.2M | 0.00% | −290,642−31.5% | Reduced |
| Alliancebernstein L.P. | 623,046 | $16.2M | 0.01% | −36,916−5.6% | Reduced |
| Vanguard Capital Management LLC | 642,672 | $16.5M | 0.00% | +642,672 | New |
| Dimensional Fund Advisors LP | 802,865 | $20.6M | 0.00% | +32,048+4.2% | Added |
| BlackRock, Inc. | 1,401,775 | $35.9M | 0.00% | −19,274−1.4% | Reduced |
| Two Sigma Advisers, LP | 0 | $0 | 0.00% | −110,964−100.0% | Sold out |
| Raymond James Financial Inc | 0 | $0 | 0.00% | −45,478−100.0% | Sold out |
| State of Wyoming | 0 | $0 | 0.00% | −15,885−100.0% | Sold out |
| Quest Partners LLC | 0 | $0 | 0.00% | −10,640−100.0% | Sold out |
| Engineers Gate Manager LP | 0 | $0 | 0.00% | −10,510−100.0% | Sold out |
| Canada Pension Plan Investment Board | 0 | $0 | 0.00% | −9,200−100.0% | Sold out |
| Ballentine Partners, LLC | 0 | $0 | 0.00% | −8,682−100.0% | Sold out |
| Blair William & Co | 0 | $0 | 0.00% | −7,828−100.0% | Sold out |
| SG Americas Securities, LLC | 0 | $0 | 0.00% | −4,413−100.0% | Sold out |
| Amalgamated Bank | 0 | $0 | 0.00% | −463−100.0% | Sold out |
| Jones Financial Companies LLLP | 0 | $0 | 0.00% | −190−100.0% | Sold out |
| Vanguard Group Inc | – | – | – | – | Not filed |
| Comerica Bank | – | – | – | – | Not filed |