Bank of Marin Bancorp (BMRC) Ownership
BMRC ownership summary
as of October 18, 2026- Institutions
- 69.7% of shares outstanding
- Insiders
- 4.67% of shares outstanding
- Shares outstanding
- 16.2M
- Float
- 15.2M shares available to trade
- Short interest
- 6.86% 1.1M shares short
- Days to cover
- 6.70 short interest up 22.0% vs prior month
- Institutions 69.67%
- Insiders 4.67%
- Other investors 25.66%
BMRC top institutional holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | BlackRock Inc | 9.88% | 1.6M | $42.3M | +198,449 (+14.2%) | June 30, 2026 |
| 2 | Dimensional Fund Advisors, Inc. | 4.20% | 680K | $18.0M | −122,626 (−15.3%) | June 30, 2026 |
| 3 | Vanguard Capital Management, LLC | 4.06% | 658K | $17.4M | +15,269 (+2.4%) | June 30, 2026 |
| 4 | AllianceBernstein L.P. | 3.79% | 614K | $16.2M | −9,322 (−1.5%) | June 30, 2026 |
| 5 | HoldCo Asset Management, L.P. | 3.11% | 504K | $13.3M | — | June 30, 2026 |
| 6 | Manufacturers Life Insurance Co | 2.82% | 456K | $12.1M | −2,411 (−0.5%) | June 30, 2026 |
| 7 | Ameriprise Financial Inc | 2.60% | 420K | $11.1M | +45,590 (+12.2%) | June 30, 2026 |
| 8 | Geode Capital Management, LLC | 2.55% | 413K | $10.9M | +22,872 (+5.9%) | June 30, 2026 |
| 9 | Two Sigma Investments LLC | 2.23% | 362K | $9.5M | +94,998 (+35.6%) | June 30, 2026 |
| 10 | State Street Corp | 2.13% | 344K | $9.1M | +4,310 (+1.3%) | June 30, 2026 |
| 11 | Heartland Advisors Inc | 2.01% | 326K | $8.6M | +75,508 (+30.2%) | June 30, 2026 |
| 12 | Algebris Investment Management (UK) LLP | 1.81% | 293K | $7.7M | +217,725 (+289.1%) | June 30, 2026 |
| 13 | Morgan Stanley - Brokerage Accounts | 1.68% | 272K | $7.2M | +31,529 (+13.1%) | June 30, 2026 |
| 14 | Hotchkis & Wiley Capital Management LLC | 1.63% | 264K | $7.0M | +3,600 (+1.4%) | June 30, 2026 |
| 15 | Citadel Advisors Llc | 1.58% | 255K | $6.7M | +76,537 (+42.8%) | June 30, 2026 |
| 16 | Qube Research & Technologies | 1.13% | 183K | $4.8M | +105,241 (+134.8%) | June 30, 2026 |
| 17 | AQR Capital Management LLC | 1.04% | 168K | $4.4M | +50,835 (+43.2%) | June 30, 2026 |
| 18 | Charles Schwab Investment Management Inc | 0.85% | 137K | $3.6M | +12,043 (+9.6%) | June 30, 2026 |
| 19 | Northern Trust Corp | 0.83% | 134K | $3.5M | +8,967 (+7.2%) | June 30, 2026 |
| 20 | Renaissance Technologies Corp | 0.82% | 132K | $3.5M | +12,989 (+10.9%) | June 30, 2026 |
Value at the latest close. Change = shares bought or sold in the latest quarterly filing (13F). In the top 20, 16 holders added 976K shares and 3 cut 134K.
BMRC top mutual fund and ETF holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | Vanguard MStar Total Stk Mkt Idx Invest | 2.88% | 467K | $12.3M | −3,632 (−0.8%) | August 31, 2026 |
| 2 | iShares Russell 2000 ETF | 2.55% | 413K | $10.9M | +11,251 (+2.8%) | September 30, 2026 |
| 3 | Heartland Value Investor | 1.85% | 300K | $7.9M | — | August 31, 2026 |
| 4 | Columbia Small Cap Value Discv A | 1.72% | 279K | $7.4M | +1,800 (+0.6%) | August 31, 2026 |
| 5 | JH Financial Opportunities | 1.32% | 214K | $5.7M | — | August 31, 2026 |
| 6 | JHancock Regional Bank A | 1.31% | 212K | $5.6M | — | August 31, 2026 |
| 7 | DFA US Small Cap Value I | 1.23% | 199K | $5.3M | — | August 31, 2026 |
| 8 | State Street® SPDR® S&PRgnllBkgETF | 1.22% | 198K | $5.2M | +5,920 (+3.1%) | September 30, 2026 |
| 9 | Fidelity Small Cap Index | 1.02% | 165K | $4.3M | +730 (+0.4%) | July 31, 2026 |
| 10 | iShares Russell 2000 Value ETF | 0.94% | 152K | $4.0M | +232 (+0.2%) | September 30, 2026 |
| 11 | AB Small Cap Value Advisor | 0.72% | 116K | $3.1M | — | August 31, 2026 |
| 12 | BlackRock Advantage Small Cap Core Instl | 0.56% | 90K | $2.4M | — | August 31, 2026 |
| 13 | Vanguard Russell 2000 ETF | 0.53% | 86K | $2.3M | +2,054 (+2.4%) | August 31, 2026 |
| 14 | Schwab US Small-Cap ETF™ | 0.53% | 86K | $2.3M | +54 (+0.1%) | September 30, 2026 |
| 15 | Fidelity Extended Market Index | 0.50% | 81K | $2.1M | −435 (−0.5%) | August 31, 2026 |
| 16 | AB Small Cap Core Z | 0.47% | 77K | $2.0M | — | August 31, 2026 |
| 17 | DFA US Small Cap I | 0.44% | 71K | $1.9M | — | August 31, 2026 |
| 18 | DFA US Micro Cap I | 0.37% | 59K | $1.6M | +19 (+0.0%) | August 31, 2026 |
| 19 | BSF Systematic US Eq Abs Ret A2 USD | 0.34% | 54K | $1.4M | — | December 31, 2025 |
| 20 | Dimensional US Small Cap ETF | 0.33% | 54K | $1.4M | — | September 30, 2026 |
Funds report holdings monthly or quarterly; dates differ by fund.
BMRC insider transactions
latest 8| Date | Name | Transaction | Price | Shares | Value |
|---|---|---|---|---|---|
| 2023-12-01 | William H Mcdevitt Jr | Sell | $20.10 | 3,000 | $60,300 |
| 2023-05-23 | Misako Stewart | Buy | $18.45 | 1,000 | $18,450 |
| 2023-05-10 | Timothy D Myers | Buy | $14.56 | 684 | $9,959 |
| 2023-05-08 | Arasadi Sathis | Buy | $14.20 | 100 | $1,420 |
| 2023-05-05 | Arasadi Sathis | Buy | $14.30 | 200 | $2,860 |
| 2023-05-05 | David A Merck | Buy | $14.40 | 500 | $7,200 |
| 2023-05-05 | Secil Tabli Watson | Buy | $14.39 | 1,500 | $21,585 |
| 2023-05-03 | Kevin R Kennedy | Buy | $15.15 | 5,000 | $75,750 |
Reported trades by company officers, directors and other filers (including disclosures by members of Congress where EODHD lists them). "—" where the filing gives no share count.
BMRC shares outstanding
Year-end shares outstanding, adjusted for splits.
Who owns BMRC
Institutional investors own 69.7% of Bank of Marin Bancorp's shares and insiders 4.67%. The largest holder is BlackRock Inc with 9.88% of the shares (1.6M), as of June 30, 2026. Among the top 20 institutions, 16 added shares and 3 reduced their stake in the latest filings. Short interest is 6.86% of the float, or 6.70 days of average trading volume. The share count rose 31.7% since 2014.
Related: BMRC analyst forecast, BMRC key metrics, BMRC dividend history. See the BMRC stock overview for the latest quote and news.
BMRC ownership FAQ
Who owns the most Bank of Marin Bancorp stock?
The largest shareholders of Bank of Marin Bancorp are BlackRock Inc (9.88%), Dimensional Fund Advisors, Inc. (4.20%), Vanguard Capital Management, LLC (4.06%), AllianceBernstein L.P. (3.79%), HoldCo Asset Management, L.P. (3.11%).
What percentage of Bank of Marin Bancorp is owned by institutions?
Institutions hold 69.7% of Bank of Marin Bancorp's shares outstanding; insiders hold 4.67%.
Which funds own Bank of Marin Bancorp?
The largest fund holders of Bank of Marin Bancorp are Vanguard MStar Total Stk Mkt Idx Invest (2.88%), iShares Russell 2000 ETF (2.55%), Heartland Value Investor (1.85%), Columbia Small Cap Value Discv A (1.72%), JH Financial Opportunities (1.32%).
What is Bank of Marin Bancorp's short interest?
1.1M shares of Bank of Marin Bancorp were sold short, 6.86% of the float; at the average daily volume it would take 6.70 days to cover.
Are insiders buying or selling Bank of Marin Bancorp?
Of the latest 8 reported insider transactions in Bank of Marin Bancorp (since May 3, 2023), 7 were purchases and 1 were sales.
How many shares of Bank of Marin Bancorp are outstanding?
Bank of Marin Bancorp has 16.2M shares outstanding, of which 15.2M are in the public float.