Bank of Marin Bancorp Q3 2026 profit rises 32%

Quarterly net interest margin was 3.48%, deposits grew $25.3 million, and the board declared a $0.25-per-share dividend.

Rhea-AI Filing Summary

Bank of Marin Bancorp (BMRC) reported third-quarter 2026 net income of $9.934 million, compared with $7.526 million a year earlier; diluted earnings per share was $0.62 versus $0.47. Tax-equivalent net interest margin was 3.48%, up 10 basis points from the prior quarter. Net interest income was $31.4 million, an increase of $619,000 from the prior quarter.

Bank of Marin’s loans increased $43.4 million to $2.144 billion, and deposits rose $25.3 million to $3.395 billion as of September 30, 2026. Classified loans increased to $35.0 million, or 1.63% of total loans, primarily after a $14.1 million owner-occupied commercial real estate relationship was downgraded; the borrower was paying as agreed, and the company stated there was no expected loss potential. Non-accrual loans were $9.7 million, or 0.45% of total loans. Bancorp’s tangible common equity to tangible assets ratio declined to 8.05% as rising market interest rates affected accumulated other comprehensive income; regulatory capital remained above well-capitalized thresholds.

Bancorp’s board approved a $0.25-per-share quarterly cash dividend on October 22, payable November 12 to shareholders of record November 5, 2026.

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Positive

• Moderate pointNet income rose 32.0% year over year to $9.934 million.

Negative

• Moderate pointClassified loans increased to $35.0 million, 1.63% of total loans.

Filing Explained

The company’s existing buyback program authorizes up to $25.0 million through July 31, 2027, but this is capacity, not a completed repurchase: $23.9 million remained available as of September 30, 2026, and no shares were repurchased in the second or third quarter, so no buyback-driven share reduction is reported for those quarters.

8-K Event Classification

4 items: 2.02, 7.01, 8.01, 9.01

4 items

Item 2.02 Results of Operations and Financial Condition Financial

Disclosure of earnings results, typically an earnings press release or preliminary financials.

Item 7.01 Regulation FD Disclosure Disclosure

Material non-public information disclosed under Regulation Fair Disclosure, often investor presentations or guidance.

Item 8.01 Other Events Other

Voluntary disclosure of events the company deems important to shareholders but not covered by other items.

Item 9.01 Financial Statements and Exhibits Exhibits

Financial statements, pro forma financial information, or exhibit attachments filed with this report.

Key Figures

Net income: $9.934 million Diluted earnings per share: $0.62 per share Tax-equivalent net interest margin: 3.48% +4 more

7 metrics

Net income $9.934 million Third quarter 2026; $7.526 million in third quarter 2025

Diluted earnings per share $0.62 per share Third quarter 2026; $0.47 in third quarter 2025

Tax-equivalent net interest margin 3.48% Third quarter 2026; 3.38% in second quarter 2026

Loans $2.144 billion As of September 30, 2026; $2.101 billion as of June 30, 2026

Deposits $3.395 billion As of September 30, 2026; $3.370 billion as of June 30, 2026

Classified loans $35.0 million As of September 30, 2026; 1.63% of total loans

Quarterly cash dividend $0.25 per share Payable November 12, 2026

Key Terms

tax-equivalent net interest margin, pre-tax, pre-provision net income, classified loans, non-accrual loans

4 terms

tax-equivalent net interest margin financial

"The net interest margin increased 10 basis points to 3.48%"

Net interest margin measures the percentage difference between interest a lender earns on its assets and interest it pays on liabilities; tax-equivalent net interest margin adjusts that figure to account for tax-exempt interest by converting it into the taxable-equivalent yield using a chosen tax rate. This makes the margin comparable across institutions or assets by reflecting what tax-free income would be worth if it were taxed, like converting prices into the same currency so you can compare them directly.

pre-tax, pre-provision net income financial

"A 17% increase in pre-tax pre-provision net income"

A bank profitability measure that shows earnings before income taxes and before the reserves set aside for potential loan losses (provisions). It isolates core operating profit so investors can see how the business is performing before one-time tax effects and anticipated credit problems, much like checking an engine’s horsepower before loading the car — useful for comparing performance across periods and peers and judging resilience to loan losses.

classified loans financial

"Classified loans increased by $15.2 million"

Classified loans are bank loans that regulators or the bank have flagged as showing credit trouble—ranging from early repayment doubts to loans unlikely to be fully repaid—and placed into risk categories. They matter to investors because a rising share of classified loans signals weaker asset quality and higher potential losses, which can force a lender to build reserves or raise capital, much like seeing more cracked shingles warns a homeowner the roof may soon need costly repairs.

non-accrual loans financial

"Non-accrual loans increased by $1.2 million"

A non-accrual loan is a loan a lender has decided is unlikely to produce the scheduled interest payments, so the lender stops counting future interest as income and may record the loan at a reduced value. Think of it like renting out a house where the tenant has stopped paying: you stop counting future rent as earnings because it’s uncertain you’ll get it. For investors, a rise in non-accrual loans signals worsening credit quality, lower reported income and higher potential losses that can weaken a bank’s capital and share price.

Earnings Snapshot

Net income: $9.934 million

Third quarter of 2026

Net income $9.934 million 32.0% increase year over year

Diluted earnings per share $0.62 per share 31.9% increase year over year

Tax-equivalent net interest margin 3.48% 10 basis points higher than the prior quarter

Pre-tax, pre-provision net income $14.499 million 50.9% increase year over year

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

How much did BMRC earn in the third quarter of 2026?

BMRC reported net income of $9.934 million and diluted earnings per share of $0.62 for the third quarter of 2026. A year earlier, net income was $7.526 million and diluted earnings per share was $0.47.

What is BMRC’s quarterly dividend and when is it payable?

Bank of Marin Bancorp declared a $0.25-per-share cash dividend, payable November 12, 2026, to shareholders of record at the close of business on November 5, 2026. The board approved the dividend on October 22, 2026.

How much liquidity did Bank of Marin report?

Bank of Marin reported $2,161.6 million in net available funding sources as of September 30, 2026. The sources included unrestricted cash, unencumbered securities, Federal Home Loan Bank and Federal Reserve lines of credit, and correspondent-bank lines of credit.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 10/26/2026 - 08:55 AM EDT Accepted by SEC EDGAR 10/26/2026 - 08:55 AM EDT Learn about SEC filing dates

0001403475FALSE00014034752026-10-222026-10-22

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C.  20549 

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of

the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported) October 22, 2026

Bank of Marin Bancorp

(Exact name of Registrant as specified in its charter)

California			001-33572			20-8859754
(State or other jurisdiction of incorporation)			(Commission File Number)			(IRS Employer Identification No.)

504 Redwood Blvd., Suite 100, Novato, CA			94947
(Address of principal executive office)			(Zip Code)

Registrant’s telephone number, including area code:  (415) 763-4520

Not Applicable

(Former name or former address, if changes since last report)

Check the appropriate box below if the Form 8-K filing is to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐ Written communications pursuant to Rule 425 under the Securities Act (17CFR 230.425)

☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ Pre-commencement communications pursuant to Rule 13e-4(c)) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to 12(b) of the Act:
Title of each class			Trading Symbol			Name of each exchange on which registered
Common stock, no par value			BMRC			The Nasdaq Stock Market

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.   ☐ 

Section 2 - Financial Information

Item 2.02    Results of Operations and Financial Condition

On October 26, 2026, Bank of Marin Bancorp, "Bancorp" (Nasdaq: BMRC), parent company of Bank of Marin, released its financial results for the quarter ended September 30, 2026. A copy of the press release is included as Exhibit 99.1.

The press release will be available on Bank of Marin's website at http://www.bankofmarin.com under “Investor Relations/News & Market Data/Press Releases" and "Presentations” on October 26, 2026.

Section 7 - Regulation FD

Item 7.01    Regulation FD Disclosure

Bancorp is furnishing presentation materials that may be used at various investor conferences during the fourth quarter of 2026. The Company is not undertaking to update the earnings presentation. A copy of the presentation is attached as Exhibit 99.2 to this report and is being furnished to the SEC and shall not be deemed “filed” for any purpose.

The earnings presentations will be available on Bank of Marin’s website at http://www.bankofmarin.com under Investor Relations/News & Market Data/Press Releases” on October 26, 2026.

Section 8 - Other Events

Item 8.01     Other Events

In the press release, Bancorp announced that on October 22, 2026, its Board of Directors approved a quarterly cash dividend of $0.25 per share. The cash dividend is payable on November 12, 2026, to shareholders of record at the close of business on November 5, 2026.

A copy of the press release is attached to this report as Exhibit 99.1.

Section 9 - Financial Statements and Exhibits

Item 9.01    Financial Statements and Exhibits

(d)    Exhibits.

Exhibit No.			Description			Page Number
99.1			Press Release dated October 26, 2026			1-12
99.2			Third Quarter 2026 Earnings Presentation
104			Cover Page Interactive Data File (formatted as inline XBRL and contained in Exhibit 101)

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Date:

October 26, 2026

BANK OF MARIN BANCORP

By:

/s/ David Bonaccorso

David Bonaccorso

Executive Vice President

and Chief Financial Officer

EXHIBIT 99.1

FOR IMMEDIATE RELEASE			MEDIA CONTACT:
			Yahaira Garcia-Perea
			Marketing & Corporate Communications Manager
			916-823-7214 | YahairaGarcia-Perea@bankofmarin.com

BANK OF MARIN BANCORP REPORTS THIRD QUARTER FINANCIAL RESULTS DRIVEN BY LOAN GROWTH, NIM EXPANSION AND HIGHER EARNINGS

NOVATO, CA, October 26, 2026 - Bank of Marin Bancorp, "Bancorp" (Nasdaq: BMRC), parent company of Bank of Marin, "Bank," completed another quarter of improved financial performance, reflecting continued enhanced profitability and overall balance sheet strength. This performance was supported by progress across key financial and operating priorities:

•Increased earnings per share, pre-tax pre-provision net income, and return on average tangible common equity

•Expanded net interest margin from higher loan yields and reduced deposit costs, and grew both total deposits and noninterest-bearing deposits

•Loan growth from organic originations supplemented by a loan pool purchase

•Core non-interest income growth

•Prudent expense management

BMRC reports net income of $9.9 million for the third quarter of 2026. This compares to net income of $9.2 million for the second quarter of 2026 and net income of $7.5 million for the third quarter of 2025. Diluted earnings per share was $0.62 for the third quarter, compared to $0.58 for the prior quarter and $0.47 for the third quarter of the prior year. Continued net interest margin expansion largely drove these increases, contributing to a 32% year-over-year increase in quarterly diluted earnings per share.

"Active management of deposit costs, growth in fee income, and expense discipline drove a 17% increase in pre-tax pre-provision net income on a sequential quarter basis," said President & CEO Tim Myers. "Organic originations drove loan growth during the quarter which was supplemented by a California residential loan pool purchase that utilized excess liquidity, diversified our earning assets, and is expected to provide attractive risk-adjusted returns."

Selected Financial Results

Comparable (non-GAAP) Excluding Loss on Sale of Securities			Three months ended																		Nine months ended
(in thousands, except per share amounts; unaudited)			September 30, 2026			June 30, 2026			% Change			September 30, 2025			% Change						September 30, 2026			September 30, 2025			% Change
Pre-tax, pre-provision net income
Pre-tax, pre-provision net income (GAAP)			$	14,499		$	12,353		17.4		%	$	9,610		50.9		%				$	38,449		$	4,967		674.1		%
Comparable pre-tax, pre-provision net income (non-GAAP)			14,499			12,353			17.4		%	9,610			50.9		%				38,449			23,703			62.2		%
Net income
Net income (GAAP)			9,934			9,246			7.4		%	7,526			32.0		%				27,690			3,866			616.2		%
Comparable net income (non-GAAP)			9,934			9,246			7.4		%	7,526			32.0		%				27,690			17,064			62.3		%
Diluted earnings per share
Weighted average diluted shares
Diluted earnings per share (GAAP)			$	0.62		$	0.58		6.9		%	$	0.47		31.9		%				$	1.73		$	0.24		620.8		%
Comparable diluted earnings per share (non-GAAP)			$	0.62		$	0.58		6.9		%	$	0.47		31.9		%				$	1.73		$	1.07		61.7		%
See complete Reconciliation of GAAP and Non-GAAP Financial Measures below
Related non-GAAP tax benefit calculated using blended statutory rate of 29.5636%

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Concurrent with this release, Bancorp issued presentation slides providing supplemental information, some of which will be discussed during the third quarter 2026 earnings call. The earnings release and presentation slides are intended to be reviewed together and can be found online on Bank of Marin’s website at www.bankofmarin.com under “Investor Relations.”

Additional highlights for the third quarter of 2026 included the following:

•The third quarter tax-equivalent net interest margin improved 10 basis points over the preceding quarter to 3.48% from 3.38% due largely to improved average loan yields of 11 basis points.

•Return on average assets ("ROA"), return on average equity ("ROE"), return on average tangible common equity ("ROTCE") and the efficiency ratio improved on a GAAP basis from the prior quarter, as shown below. All ratios benefited from increased revenue and reduced non-interest expense in the third quarter. Non-GAAP ratios for the prior year exclude the loss on security sales in that period, all other factors unchanged, and with adjustments made based on our blended statutory tax rate of 29.56%. See Reconciliation of GAAP and Non-GAAP Financial Measures below.

Operating Results

Comparable (non-GAAP) Excluding Loss on Sale of Securities			Three months ended												Nine months ended
(in thousands, except per share amounts; unaudited)			September 30, 2026			June 30, 2026			September 30, 2025						September 30, 2026			September 30, 2025
Return on average assets
Average assets			$	3,766,498		$	3,850,140		$	3,828,876					$	3,867,814		$	3,765,281
Return on average assets (GAAP)			1.05		%	0.96		%	0.78		%				0.96		%	0.14		%
Comparable return on average assets (non-GAAP)			1.05		%	0.96		%	0.78		%				0.96		%	0.61		%
Return on average equity
Average stockholders' equity			$	395,812		$	395,328		$	439,950					$	396,378		$	438,781
Return on average equity (GAAP)			9.96		%	9.38		%	6.79		%				9.34		%	1.18		%
Comparable return on average equity (non-GAAP)			9.96		%	9.38		%	6.79		%				9.34		%	5.20		%
Return on average tangible common equity
Average goodwill and intangibles			$	74,192		$	74,393		$	75,011					$	74,390		$	75,226
Average tangible common equity			$	321,620		$	320,935		$	364,939					$	321,988		$	363,555
Return on average tangible common equity (GAAP)			12.26		%	11.55		%	8.18		%				11.50		%	1.42		%
Comparable return on average tangible common equity (non-GAAP)			12.26		%	11.55		%	8.18		%				11.50		%	6.28		%
Efficiency ratio
Efficiency ratio (GAAP)			58.65		%	63.62		%	67.86		%				62.73		%	92.50		%
Comparable efficiency ratio (non-GAAP)			58.65		%	63.62		%	67.86		%				62.73		%	72.11		%
See complete Reconciliation of GAAP and Non-GAAP Financial Measures below
Related non-GAAP tax benefit calculated using blended statutory rate of 29.5636%

•Total loans increased by $43.4 million, or 2.07%, to $2.144 billion, through continued healthy fundings of $63.6 million and reduced payoffs of $31.6 million in the quarter. In addition, the Bank used a portion of its excess liquidity to purchase the $31.1 million residential mortgage pool mentioned above.

•Total deposits increased by $25.3 million, or 0.75%, to $3.395 billion as of September 30, 2026 compared to $3.370 billion as of June 30, 2026, primarily within noninterest-bearing accounts which increased by $45.0 million. Noninterest-bearing deposits continued to make up a strong portion of total deposits at 37.8% as of September 30, 2026, compared to 36.7% last quarter.

•The average cost of interest-bearing deposits decreased from 2.04% to 2.03%. The average cost of total deposits decreased from 1.28% to 1.24% primarily due to the increase in average noninterest-bearing deposits and the increase in average one-way sales of interest-bearing deposits which improved the average deposit cost mix. The total deposit spot rate at September 30, 2026 was 1.27% compared to 1.28% at June 30, 2026.

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•Non-interest income grew 15.8% including an increase of $251 thousand in service charges on business deposit accounts impacted by an updated pricing strategy that better aligns with our service levels and went into effect on July 1st.

•Special mention loans decreased to $65.1 million from $100.9 million last quarter while classified loans increased by $15.2 million to $35.0 million, or 1.63% of total loans from 0.95% last quarter primarily due to the downgrade of one $14.1 million owner-occupied commercial real estate relationship facing a borrower-specific challenge. The borrower is paying as agreed and there is no expected loss potential. Non-accrual loans increased by $1.2 million to $9.7 million or 0.45% of total loans from 0.40%.

•Due to growth in loan balances and unfunded commitments, the Bank recorded a provision for credit losses on loans of $500 thousand and a provision for credit losses on unfunded commitments of $325 thousand in the third quarter of 2026 compared to a reversal of the provision for credit losses on loans of $320 thousand and no provision for unfunded commitments in the prior quarter. The allowance for credit losses was 1.07% of total loans at both September 30, 2026 and June 30, 2026.

•Capital remained above well-capitalized regulatory thresholds. Bancorp's Tier I leverage ratio increased by 38 basis points to 9.04% as of September 30, 2026 from 8.66% last quarter. Total risk-based capital improved by 1 basis point to 15.59% as of September 30, 2026 for Bancorp compared to 15.58% as of June 30, 2026. Due to rising market interest rates, which negatively impacted accumulated other comprehensive income, the Bancorp's tangible common equity to tangible assets ("TCE ratio") declined by 47 basis points to 8.05% as of September 30, 2026. Similarly, book value per share and tangible book value per share declined slightly by $1.14 and $1.11 to $23.37 and $18.81, respectively.

•The Board of Directors declared a cash dividend of $0.25 per share on October 22, 2026, which was the 86th consecutive quarterly dividend declared by Bancorp. The dividend is payable on November 12, 2026 to shareholders of record at the close of business on November 5, 2026.

“The quarterly growth in deposit service charge income, which annualized to $1 million, is an example of the strategic fee income initiatives we are pursuing to diversify our revenue streams,” said Chief Financial Officer Dave Bonaccorso. “Consistent with prior rising interest rate cycles, we expect that our legendary customer service, strong liquidity position, and high noninterest-bearing deposit percentage will result in a relatively low rising-rate deposit beta. Continued legacy loan repricing along with new loan originations at higher rates should support modest net interest margin expansion over time."

Loans and Credit Quality

Loans increased by $43.4 million for the third quarter and totaled $2.144 billion as of September 30, 2026, compared to $2.101 billion as of June 30, 2026. Third quarter 2026 new fundings were $63.6 million compared to $62.8 million in the prior quarter and $69.0 million in the third quarter of 2025. Year-to-date new fundings increased 12% and total commitments increased 21% from 2025. In addition, the Bank used a portion of its excess liquidity to purchase the $31.1 million residential mortgage pool mentioned above.

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			Three months ended												Nine months ended
(in millions; unaudited)			September 30, 2026			June 30, 2026			September 30, 2025						September 30, 2026			September 30, 2025
Gross loans beginning balance			$	2,101.0		$	2,115.7		$	2,073.6					$	2,120.9		$	2,083.3
Newly funded			63.6			62.8			69.0						187.2			167.0
New total commitments1			102.4			98.4			99.8						281.3			232.6
Purchased			31.1			—			0.2						31.1			0.2
Net increase (decrease) in line of credit utilization			2.5			14.5			2.5						17.6			(4.1)
Payoffs			(31.6)			(71.2)			(33.9)						(133.4)			(95.9)
Charge-offs			—			—			—						(7.3)			—
Note sales			—			—			—						(9.1)			—
Amortization			(22.2)			(20.8)			(21.0)						(62.6)			(60.1)
Gross loans ending balance			$	2,144.4		$	2,101.0		$	2,090.4					$	2,144.4		$	2,090.4
Weighted average rate
Newly funded			6.65		%	6.53		%	6.10		%				6.37		%	6.32		%
Payoffs			5.93		%	5.86		%	6.51		%				5.76		%	6.09		%
Spread			0.72		%	0.67		%	(0.41)		%				0.61		%	0.23		%
1 New total commitments includes both newly funded loans and new unfunded commitments

Non-accrual loans increased by $1.2 million during the quarter to $9.7 million, or 0.45% of total loans, compared to $8.5 million, or 0.40%, at June 30, 2026.

Classified loans increased by $15.2 million during the third quarter of 2026 to $35.0 million from $19.9 million at June 30, 2026. Loans designated as special mention, which are not considered adversely classified, decreased to $65.1 million at September 30, 2026, compared to $100.9 million at June 30, 2026, largely due to the downgrade of $17.6 million to classified and upgrades and payoffs of $18.2 million. The primary driver of the increase in classified loans and the decrease in special mention loans is a $14.1 million owner-occupied commercial real estate relationship facing a borrower-specific challenge. The loan is well-collateralized, the borrower is paying as agreed, and there is no expected loss potential.

Accruing loans past due 30 to 89 days totaled $2.6 million at September 30, 2026, compared to $2.0 million at June 30, 2026.

Net charge-offs totaled $21 thousand in the third quarter of 2026 compared to $39 thousand in the prior quarter.

The Bank recorded a $500 thousand provision for credit losses on loans in the third quarter of 2026, compared to a reversal of the provision for credit losses on loans of $320 thousand in the prior quarter, driven primarily by loan growth.

The ratio of allowance for credit losses to total loans remained stable at 1.07% for both September 30, 2026 and June 30, 2026.

There was a provision for credit losses on unfunded loan commitments of $325 thousand in the third quarter of 2026 compared to no provision in the prior quarter due to an increase in commitments, primarily within construction.

Cash, Cash Equivalents and Restricted Cash

Total cash, cash equivalents and restricted cash were $265.3 million at September 30, 2026, a decrease of $14.3 million compared to $279.6 million at June 30, 2026.

Investments

The investment securities portfolio totaled $1.215 billion at September 30, 2026, a decrease of $27.6 million from June 30, 2026. The decrease in the portfolio was due to principal repayments and calls/maturities totaling $50.2 million and $1.1 million, respectively, and an increase of $35.2 million in unrealized losses on available-for-sale ("AFS") securities, partially offset by purchases of $58.9 million. The portfolio is eligible for pledging to the Federal Home Loan Bank ("FHLB") and the Federal Reserve as collateral for borrowing, and is comprised of high credit quality investments with an average effective duration of 3.11. The portfolio generates cash flows monthly from

4

interest, principal amortization and payoffs, which supports the Bank's liquidity. Those cash flows totaled $64.4 million and $92.1 million in the third quarter of 2026 and the second quarter of 2026, respectively.

Deposits

Deposits increased $25.3 million, or 0.8%, to $3.395 billion at September 30, 2026, compared to $3.370 billion at June 30, 2026, including a $45.0 million increase in noninterest-bearing balances, partially offset by decreases in money market and time accounts. As of September 30, 2026 and June 30, 2026, there were no one-way sales, although the Bank sold an average of $130.6 million in the third quarter, compared to an average of $93.7 million in the second quarter, within money market accounts during the quarter which enhanced non-interest income and net interest margin. Noninterest-bearing deposits continued to make up a strong 37.8% of total deposits at September 30, 2026, compared to 36.7% at June 30, 2026. The Bank's focused business development efforts generated $23.2 million in new deposit relationships during the quarter, including $13.3 million in new noninterest-bearing deposits.

Borrowings and Liquidity

As of September 30, 2026, the Bank had no outstanding short-term borrowings, consistent with June 30, 2026. Net available funding sources, including unrestricted cash, unencumbered available-for-sale securities and total available borrowing capacity totaled $2.162 billion, or 63.67% of total deposits and 178.5% of estimated uninsured and uncollateralized deposits as of September 30, 2026.

The following table details the components of our contingent liquidity sources as of September 30, 2026.

(in millions)			Total Available			Amount Used			Net Availability
Internal Sources
Unrestricted cash 1			$	247.2		$	—		$	247.2
Unencumbered securities at market value			518.6			—			518.6
External Sources
FHLB line of credit			964.0			—			964.0
FRB line of credit			291.8			—			291.8
Lines of credit at correspondent banks			140.0			—			140.0
Total Liquidity			$	2,161.6		$	—		$	2,161.6

1 Excludes cash items in transit as of September 30, 2026.

Note: There were no off-balance sheet one-way sell deposits as of September 30, 2026.

Subordinated Notes

During the fourth quarter of 2025, Bancorp issued Fixed-to-Floating Subordinated Notes of $45.0 million with a final maturity date of December 1, 2035, to certain investors in a private placement to strengthen capital ratios as part of the balance sheet repositioning. The interest rate of the Bank’s subordinated notes is 6.75%, payable semi-annually in arrears on June 1 and December 1 of each year, which commenced on June 1, 2026. After December 1, 2030, the interest rate will be variable and equal Three-Month Term SOFR plus 335 basis points, resetting quarterly. Subordinated notes outstanding were $44.0 million, net of issuance costs, at September 30, 2026.

Capital Resources

Our capital ratios are summarized in the table below.

Capital Ratios			September 30, 2026						June 30, 2026						September 30, 2025
			Bancorp			Bank			Bancorp			Bank			Bancorp			Bank
Common Equity Tier 1 to RWA			12.96		%	13.89		%	12.93		%	13.69		%	14.93		%	13.92		%
Total Tier I to RWA			12.96		%	13.89		%	12.93		%	13.69		%	14.93		%	13.92		%
Total Capital to RWA			15.59		%	14.83		%	15.58		%	14.61		%	16.13		%	15.11		%
Tier I Leverage Ratio to Avg Assets			9.04		%	9.69		%	8.66		%	9.16		%	10.12		%	9.43		%
Tangible Common Equity to TA			8.05		%	8.69		%	8.52		%	9.03		%	9.72		%	9.04		%

5

The Bank's capital plan and point-in-time capital stress tests indicate that capital ratios will remain above regulatory well-capitalized and internal policy minimums throughout a five-year forecast horizon and across stress scenarios such as additional unrealized losses on the investment portfolio, additional deposit growth or decline, loan credit quality deterioration, and potential share repurchases. Accumulated other comprehensive loss worsened by $24.8 million in the quarter due to higher market interest rates. Consequently, book value per share and tangible book value per share decreased to $23.37 and $18.81, respectively as of September 30, 2026.

Earnings

Net Interest Income

Net interest income totaled $31.4 million for the third quarter of 2026, a $619 thousand increase from the prior quarter. This was driven by an increase of $834 thousand in interest income on loans, largely due to an 11 basis point increase in average loan yields due to growth at higher rates. Also contributing to the increase was the reduction of $527 thousand in interest expense on deposits, due to improved deposit mix and active balance sheet management through one-way sales of deposits. Average balances on interest-bearing transaction accounts decreased in the quarter while average balances of noninterest-bearing balances increased. The increases were partially offset by a $505 thousand decrease in interest income from investment securities due to paydowns.

The net interest margin increased 10 basis points to 3.48% for the third quarter of 2026, compared to 3.38% for the prior quarter. The increase is primarily due to the 11 basis point increase in average loan yields, a four basis point decrease in cost of deposits, and the use of one-way sales of deposits, which improved the mix of average assets and liabilities. Newly funded loans were originated at a weighted average rate of 12 basis points higher than prior quarter.

Non-Interest Income

Non-interest income was $3.7 million for the third quarter of 2026, compared to $3.2 million for the prior quarter. The increase of $501 thousand was primarily attributable to an increase of $251 thousand in service charges on business deposit accounts due to an updated pricing strategy effective July 1st, and an increase in dividend income due to a special dividend on FHLB stock of $199 thousand.

Non-Interest Expense

Non-interest expense totaled $20.6 million for the third quarter of 2026, compared to $21.6 million for the prior quarter, a decrease of $1.0 million, primarily driven by a decrease of $465 thousand in salaries and related benefits expense which included an adjustment to the incentive bonus accrual as well as the impact of a decreased number of full-time equivalent employees at the end of the third quarter. Also contributing to the decrease in quarterly expense was a $239 thousand reduction in Federal Deposit Insurance Corporation insurance expense during the quarter, a decrease of $263 thousand in other expense, and a decrease of $132 thousand in professional services mostly related to audit, operations, compliance, information security and accounting fees.

Share Repurchase Program

On July 24, 2025, the Board of Directors authorized the repurchase of up to $25.0 million of its common stock effective July 24, 2025 through July 31, 2027. There were no repurchases in the third quarter of 2026 or in the second quarter of 2026. As of September 30, 2026, the amount remaining available for repurchase of shares was $23.9 million.

Statement Regarding use of Non-GAAP Financial Measures

Financial results are presented in accordance with GAAP and with reference to certain non-GAAP financial measures. Management believes that providing selected financial measures that exclude the loss on sale of securities is useful to investors as the strategic short-term loss taken for long-term profitability makes the operational performance difficult to compare to other periods. Because there are limits to the usefulness of this or any other non-GAAP measure to investors, Bancorp encourages readers to consider its annual and quarterly consolidated financial statements and notes related thereto for their entirety, as filed with the Securities and Exchange Commission, and not to rely on any single financial measure. A reconciliation of the GAAP financial measures to comparable non-GAAP financial measures is presented below.

6

Reconciliation of GAAP and Non-GAAP Financial Measures

(in thousands, except per share amounts; unaudited)			Three months ended												Nine months ended
Pre-tax, pre-provision net income			September 30, 2026			June 30, 2026			September 30, 2025						September 30, 2026						September 30, 2025
Income before provision for (benefit from) income taxes			$	13,674		$	12,673		$	9,610					$	37,944					$	4,892
Provision for (reversal of) credit losses on loans			500			(320)			—						180						75
Provision for credit losses on unfunded loan commitments			325			—			—						325						—
Pre-tax, pre-provision net income (GAAP)			14,499			12,353			9,610						38,449						4,967
Adjustments:
Losses on sale of investment securities from portfolio repositioning			—			—			—						—						18,736
Comparable pre-tax, pre-provision net income (non-GAAP)			$	14,499		$	12,353		$	9,610					$	38,449					$	23,703
Net income
Net income (GAAP)			$	9,934		$	9,246		$	7,526					$	27,690					$	3,866
Adjustments:
Losses on sale of investment securities from portfolio repositioning			—			—			—						—						18,736
Related income tax benefit1			—			—			—						—						(5,538)
Adjustments, net of taxes			—			—			—						—						13,198
Comparable net income (non-GAAP)			$	9,934		$	9,246		$	7,526					$	27,690					$	17,064
Diluted earnings per share
Weighted average diluted shares			$	16,040		$	15,991		$	15,934					$	16,003					$	15,979
Diluted earnings per share (GAAP)			$	0.62		$	0.58		$	0.47					$	1.73					$	0.24
Comparable diluted earnings per share (non-GAAP)			$	0.62		$	0.58		$	0.47					$	1.73					$	1.07
Return on average assets
Average assets			$	3,766,498		$	3,850,140		$	3,828,876					$	3,867,814					$	3,765,281
Return on average assets (GAAP)			1.05		%	0.96		%	0.78		%				0.96		%				0.14		%
Comparable return on average assets (non-GAAP)			1.05		%	0.96		%	0.78		%				0.96		%				0.61		%
Return on average equity
Average stockholders' equity			$	395,812		$	395,328		$	439,950					$	396,378					$	438,781
Return on average equity (GAAP)			9.96		%	9.38		%	6.79		%				9.34		%				1.18		%
Comparable return on average equity (non-GAAP)			9.96		%	9.38		%	6.79		%				9.34		%				5.20		%
Return on average tangible common equity
Average goodwill and intangibles			$	74,192		$	74,393		$	75,011					$	74,390					$	75,226
Average tangible common equity			$	321,620		$	320,935		$	364,939					$	321,988					$	363,555
Return on average tangible common equity (GAAP)			12.26		%	11.55		%	8.18		%				11.50		%				1.42		%
Comparable return on average tangible common equity (non-GAAP)			12.26		%	11.55		%	8.18		%				11.50		%				6.28		%
Efficiency ratio
Non-interest expense			$	20,571		$	21,597		$	20,291					$	64,707					$	61,287
Net interest income			$	31,400		$	30,781		$	27,156					$	92,483					$	76,256
Non-interest income (GAAP)			$	3,670		$	3,169		$	2,745					$	10,673					$	(10,002)
Losses on sale of investment securities from portfolio repositioning			$	—		$	—		$	—					$	—					$	18,736
Non-interest income (non-GAAP)			$	3,670		$	3,169		$	2,745					$	10,673					$	8,734
Efficiency ratio (GAAP)			58.65		%	63.62		%	67.86		%				62.73		%				92.50		%
Comparable efficiency ratio (non-GAAP)			58.65		%	63.62		%	67.86		%				62.73		%				72.11		%
1Related tax benefit calculated using blended statutory rate of 29.5636%

7

Earnings Call and Webcast Information

Bank of Marin Bancorp (Nasdaq: BMRC) will present its third quarter financial results call via webcast on Monday, October 26, 2026 at 8:30 a.m. PT/11:30 a.m. ET. Investors can listen to the webcast online through Bank of Marin’s website at www.bankofmarin.com under “Investor Relations.” To listen to the live call, please go to the website at least 15 minutes early to register, download and install any necessary audio software. For those who cannot listen to the live broadcast, a replay will be available at the same website location shortly after the call. Closed captioning will be available during the live webcast, as well as on the webcast replay.

About Bank of Marin Bancorp

Founded in 1990 and headquartered in Novato, California, Bank of Marin is a wholly owned subsidiary of Bank of Marin Bancorp (Nasdaq: BMRC). With assets of $3.867 billion, Bank of Marin is a leading business and community bank providing commercial and personal banking, specialty lending, and wealth management and trust services through a network of 27 branches and eight commercial banking offices serving Northern California.

Known for delivering exceptional client service and investing in the communities it serves, Bank of Marin has been recognized as one of the San Francisco Business Times' Top Corporate Philanthropists since 2003 and ranked seventh on Sacramento Business Journal's 2026 Corporate Direct Giving List. Additional honors include being named one of North Bay Business Journal's Best Places to Work in 2026, the Bank's 17th recognition, and inclusion in Business Insider's America's High-Growth Companies 2026. Bank of Marin Bancorp, which was ranked the nation's No. 2 community bank deposit franchise by S&P Global Market Intelligence, is included in the Russell 2000® Small-Cap Index and the Nasdaq ABA Community Bank Index. For more information, visit www.bankofmarin.com.

Forward-Looking Statements

This release may contain certain forward-looking statements that are based on management's current expectations regarding economic, legislative, and regulatory issues that may impact Bancorp's earnings in future periods. Forward-looking statements can be identified by the fact that they do not relate strictly to historical or current facts. They often include the words “believe,” “expect,” “intend,” “estimate” or words of similar meaning, or future or conditional verbs such as “will,” “would,” “should,” “could” or “may.” Factors that could cause future results to vary materially from current management expectations include, but are not limited to, general economic conditions and the economic uncertainty in the United States and abroad, including economic or other disruptions to financial markets caused by the Trump administration's approach to tariffs and trade and the military action in Iran, acts of terrorism, war or other conflicts, impacts from inflation, supply chain disruptions, changes in interest rates (including the actions taken by the Federal Reserve to control inflation), California's unemployment rate, deposit flows, real estate values, and expected future cash flows on loans and securities; the impact of adverse developments at other banks, including bank failures, that impact general sentiment regarding the stability and liquidity of banks; costs or effects of acquisitions; competition; changes in accounting principles, policies or guidelines; changes in legislation or regulation; natural disasters (such as wildfires and earthquakes in our area); adverse weather conditions; interruptions of utility service in our markets for sustained periods; and other economic, competitive, governmental, regulatory and technological factors (including external fraud and cybersecurity threats) affecting our operations, pricing, products and services; and successful integration of acquisitions. These and other important factors are detailed in various securities law filings made periodically by Bancorp, copies of which are available from Bancorp without charge. Bancorp undertakes no obligation to release publicly the result of any revisions to these forward-looking statements that may be made to reflect events or circumstances after the date of this press release or to reflect the occurrence of unanticipated events.

8

BANK OF MARIN BANCORP FINANCIAL HIGHLIGHTS
			Three months ended												Nine months ended
(in thousands, except per share amounts; unaudited)			September 30, 2026			June 30, 2026			September 30, 2025						September 30, 2026			September 30, 2025
Selected operating data and performance ratios:
Net income			$	9,934		$	9,246		$	7,526					$	27,690		$	3,866
Diluted earnings per common share			$	0.62		$	0.58		$	0.47					$	1.73		$	0.24
Return on average assets			1.05		%	0.96		%	0.78		%				0.96		%	0.14		%
Return on average equity			9.96		%	9.38		%	6.79		%				9.34		%	1.18		%
Return on average tangible common equity			12.26		%	11.55		%	8.18		%				11.50		%	1.42		%
Efficiency ratio			58.65		%	63.62		%	67.86		%				62.73		%	92.50		%
Tax-equivalent net interest margin			3.48		%	3.38		%	2.97		%				3.37		%	2.86		%
Cost of deposits			1.24		%	1.28		%	1.41		%				1.29		%	1.40		%
Cost of funds			1.32		%	1.36		%	1.41		%				1.37		%	1.40		%
Net charge-offs (recoveries)			$	21		$	39		$	1					$	7,326		$	878
Net charge-offs to average loans			NM			NM			NM						0.35		%	0.04		%

(in thousands; unaudited)			September 30, 2026						June 30, 2026			December 31, 2025
Selected financial condition data:
Total assets			$	3,866,694					$	3,856,720		$	3,904,778
Loans:
Commercial and industrial			$	154,517					$	162,434		$	159,898
Real estate:
Commercial owner-occupied			286,005						288,744			310,219
Commercial non-owner occupied			1,384,118						1,373,990			1,366,251
Construction			25,809						16,317			15,101
Home equity			100,810						101,404			99,222
Other residential			135,173						100,710			110,614
Installment and other consumer loans			57,954						57,377			59,548
Total loans			$	2,144,386					$	2,100,976		$	2,120,853
Non-accrual loans: 1
Commercial and industrial			$	17					$	5		$	524
Real estate:
Commercial owner-occupied			—						—			315
Commercial non-owner occupied			9,212						8,118			25,387
Home equity			217						219			401
Other residential			64						67			72
Installment and other consumer loans			159						44			204
Total non-accrual loans			$	9,669					$	8,453		$	26,903
Non-accrual loans to total loans			0.45		%				0.40		%	1.27		%
Classified loans (graded substandard and doubtful)			$	35,033					$	19,877		$	32,111
Classified loans as a percentage of total loans			1.63		%				0.95		%	1.51		%
Total accruing loans 30-89 days past due			$	2,617					$	2,005		$	2,843
Total accruing loans 90+ days past due 1			$	297					$	297		$	—
Allowance for credit losses to total loans			1.07		%				1.07		%	1.42		%
Allowance for credit losses to non-accrual loans			2.37x						2.66x			1.12x
Total deposits			$	3,395,222					$	3,369,900		$	3,415,542
Loan-to-deposit ratio			63.16		%				62.35		%	62.09		%
Stockholders' equity			$	379,376					$	396,684		$	394,654
Book value per share			$	23.37					$	24.51		$	24.51
Tangible book value per share			$	18.81					$	19.92		$	19.87
Tangible common equity to tangible assets - Bank			8.69		%				9.03		%	8.59		%
Tangible common equity to tangible assets - Bancorp			8.05		%				8.52		%	8.35		%
Total risk-based capital ratio - Bank			14.83		%				14.61		%	13.90		%
Total risk-based capital ratio - Bancorp			15.59		%				15.58		%	15.25		%
Tier I Leverage Ratio to Avg Assets - Bank			9.69		%				9.16		%	8.49		%
Tier I Leverage Ratio to Avg Assets - Bancorp			9.04		%				8.66		%	8.26		%
Full-time equivalent employees			312						315			311
1 There was one non-performing loan as of September 30, 2026 and June 30, 2026 and no non-performing loans as of December 31, 2025 over 90 days past due and accruing interest.

9

BANK OF MARIN BANCORP

CONSOLIDATED STATEMENTS OF CONDITION

(in thousands, except share data; unaudited)			September 30, 2026			June 30, 2026			December 31, 2025
Assets
Cash, cash equivalents and restricted cash			$	265,330		$	279,639		$	225,303
Investment securities:
Available-for-sale (net of zero allowance for credit losses at September 30, 2026, June 30, 2026 and December 31, 2025, respectively)			1,215,229			1,242,831			1,327,812
Total investment securities			1,215,229			1,242,831			1,327,812
Loans, at amortized cost			2,144,386			2,100,976			2,120,853
Allowance for credit losses on loans			(22,943)			(22,464)			(30,089)
Loans, net of allowance for credit losses on loans			2,121,443			2,078,512			2,090,764
Goodwill			72,754			72,754			72,754
Bank-owned life insurance			71,770			71,324			71,306
Operating lease right-of-use assets			22,377			21,146			22,499
Bank premises and equipment, net			7,990			8,016			8,059
Core deposit intangible, net			1,329			1,520			1,916
Interest receivable and other assets			88,472			80,978			84,365
Total assets			$	3,866,694		$	3,856,720		$	3,904,778
Liabilities and Stockholders' Equity
Liabilities
Deposits:
Noninterest-bearing			$	1,282,323		$	1,237,322		$	1,254,416
Interest-bearing:
Transaction accounts			247,292			237,676			417,482
Savings accounts			225,467			225,353			232,109
Money market accounts			1,497,696			1,511,325			1,305,849
Time accounts			142,444			158,224			205,686
Total deposits			3,395,222			3,369,900			3,415,542
Borrowings and other obligations			582			625			709
Subordinated notes, net of issuance costs			44,006			43,955			43,857
Operating lease liabilities			24,738			23,493			24,747
Interest payable and other liabilities			22,770			22,063			25,269
Total liabilities			3,487,318			3,460,036			3,510,124
Stockholders' Equity
Preferred stock, no par value, Authorized - 5,000,000 shares, none issued			—			—			—
Common stock, no par value, Authorized - 30,000,000 shares; issued and outstanding - 16,233,030, 16,186,611 and 16,102,687 at September 30, 2026, June 30, 2026 and December 31, 2025, respectively			217,638			216,050			214,910
Retained earnings			213,729			207,843			198,163
Accumulated other comprehensive loss, net of taxes			(51,991)			(27,209)			(18,419)
Total stockholders' equity			379,376			396,684			394,654
Total liabilities and stockholders' equity			$	3,866,694		$	3,856,720		$	3,904,778

10

BANK OF MARIN BANCORP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

			Three months ended												Nine months ended
(in thousands, except per share amounts; unaudited)			September 30, 2026			June 30, 2026			September 30, 2025						September 30, 2026			September 30, 2025
Interest income
Interest and fees on loans			$	28,101		$	27,267		$	26,254					$	81,902		$	77,298
Interest on investment securities			12,922			13,427			9,846						40,218			26,530
Interest on due from banks			1,401			1,646			2,969						5,439			6,768
Total interest income			42,424			42,340			39,069						127,559			110,596
Interest expense
Interest on interest-bearing transaction accounts			630			1,462			1,365						4,131			3,817
Interest on savings accounts			640			635			600						1,852			1,720
Interest on money market accounts			8,107			7,674			8,376						23,602			23,880
Interest on time accounts			832			965			1,571						3,039			4,920
Interest on borrowings and other obligations			5			6			1						17			3
Interest on subordinated notes			810			817			—						2,435			—
Total interest expense			11,024			11,559			11,913						35,076			34,340
Net interest income			31,400			30,781			27,156						92,483			76,256
Provision for (reversal of) credit losses on loans			500			(320)			—						180			75
Provision for credit losses on unfunded loan commitments			325			—			—						325			—
Net interest income after provision for credit losses			30,575			31,101			27,156						91,978			76,181
Non-interest income
Service charges on deposit accounts			814			563			547						1,940			1,645
Wealth management and trust services			562			543			564						1,701			1,739
Earnings on bank-owned life insurance, net			445			442			434						1,375			1,339
Dividends on Federal Home Loan Bank stock			398			199			366						1,452			1,103
Debit card interchange fees, net			393			397			405						1,152			1,211
Merchant interchange fees, net			184			142			87						444			273
Earnings on bank-owned life insurance death benefits			—			59			—						538			306
Losses on sale of investment securities			—			—			—						—			(18,736)
Other income			874			824			342						2,071			1,118
Total non-interest income (loss)			3,670			3,169			2,745						10,673			(10,002)
Non-interest expense
Salaries and related benefits			12,144			12,609			12,004						38,147			36,099
Occupancy and equipment			2,163			2,090			2,079						6,352			6,411
Professional services			1,239			1,371			1,115						3,703			2,960
Data processing			1,222			1,138			1,116						3,588			3,293
Information technology			511			510			538						1,536			1,514
Federal Deposit Insurance Corporation insurance			316			555			459						1,601			1,268
Depreciation and amortization			277			270			291						810			933
Directors' expense			253			261			249						799			832
Amortization of core deposit intangible			191			196			217						587			664
Charitable contributions			130			190			56						757			575
Deposit network fees			99			118			121						366			349
Other expense			2,026			2,289			2,046						6,461			6,389
Total non-interest expense			20,571			21,597			20,291						64,707			61,287
Income before provision for income taxes			13,674			12,673			9,610						37,944			4,892
Provision for income taxes			3,740			3,427			2,084						10,254			1,026
Net income			$	9,934		$	9,246		$	7,526					$	27,690		$	3,866
Earnings per common share
Basic			$	0.62		$	0.58		$	0.47					$	1.74		$	0.24
Diluted			$	0.62		$	0.58		$	0.47					$	1.73		$	0.24
Weighted average shares:
Basic			15,984			15,952			15,907						15,954			15,957
Diluted			16,040			15,991			15,934						16,003			15,979
Comprehensive income (loss):
Net income			$	9,934		$	9,246		$	7,526					$	27,690		$	3,866
Other comprehensive (loss) income:
Change in net unrealized (losses) gains on available-for-sale securities			(35,184)			(4,838)			2,514						(47,664)			5,317
Reclassification adjustment for losses realized on the sale of available-for-sale securities in net income			—			—			—						—			18,736
Amortization of net unrealized losses on securities transferred from available-for-sale to held-to-maturity			—			—			360						—			1,065
Other comprehensive (loss) income, before tax			(35,184)			(4,838)			2,874						(47,664)			25,118
Deferred tax (benefit) expense			(10,402)			(1,430)			850						(14,092)			7,426
Other comprehensive (loss) income, net of tax			(24,782)			(3,408)			2,024						(33,572)			17,692
Total comprehensive (loss) income			$	(14,848)		$	5,838		$	9,550					$	(5,882)		$	21,558

11

BANK OF MARIN BANCORP AVERAGE STATEMENTS OF CONDITION AND ANALYSIS OF NET INTEREST INCOME

						Three months ended												Three months ended
						September 30, 2026												June 30, 2026
									Interest												Interest
						Average			Income/			Yield/						Average			Income/			Yield/
(in thousands)						Balance			Expense			Rate						Balance			Expense			Rate
Assets
			Interest-earning deposits with banks 1			$	149,540		$	1,401		3.67		%				$	176,889		$	1,646		3.68		%
			Investment securities 2, 3			1,285,175			12,960			4.03		%				1,329,846			13,465			4.05		%
			Loans 1, 3, 4, 5			2,111,760			28,211			5.23		%				2,113,964			27,382			5.12		%
			Total interest-earning assets 1			3,546,475			42,572			4.70		%				3,620,699			42,493			4.64		%
			Cash and noninterest-bearing due from banks			30,805												32,830
			Bank premises and equipment, net			7,960												7,965
			Interest receivable and other assets, net			181,258												188,646
Total assets						$	3,766,498											$	3,850,140
Liabilities and Stockholders' Equity
			Interest-bearing transaction accounts			$	242,102		$	630		1.03		%				$	363,579		$	1,462		1.61		%
			Savings accounts			228,289			640			1.11		%				235,698			635			1.08		%
			Money market accounts			1,378,872			8,107			2.33		%				1,351,175			7,674			2.28		%
			Time accounts including CDARS			148,659			832			2.22		%				165,017			965			2.35		%
			Borrowings and other obligations 1			599			5			3.27		%				640			6			3.71		%
			Subordinated notes, net			43,972			810			7.37		%				43,923			817			7.44		%
			Total interest-bearing liabilities			2,042,493			11,024			2.14		%				2,160,032			11,559			2.15		%
			Demand accounts			1,279,557												1,247,995
			Interest payable and other liabilities			48,636												46,785
			Stockholders' equity			395,812												395,328
Total liabilities & stockholders' equity						$	3,766,498											$	3,850,140
Tax-equivalent net interest income/margin 1									$	31,548		3.48		%							$	30,934		3.38		%
Reported net interest income/margin 1									$	31,400		3.46		%							$	30,781		3.36		%
Tax-equivalent net interest rate spread												2.56		%										2.49		%
						Nine months ended												Nine months ended
						September 30, 2026												September 30, 2025
									Interest												Interest
						Average			Income/			Yield/						Average			Income/			Yield/
(in thousands)						Balance			Expense			Rate						Balance			Expense			Rate
Assets
			Interest-earning deposits with banks 1			$	196,957		$	5,439		3.64		%				$	203,956		$	6,768		4.38		%
			Investment securities 2, 3			1,329,531			40,330			4.04		%				1,266,960			26,720			2.81		%
			Loans 1, 3, 4, 5			2,113,250			82,239			5.13		%				2,072,623			77,614			4.94		%
			Total interest-earning assets 1			3,639,738			128,008			4.64		%				3,543,539			111,102			4.13		%
			Cash and noninterest-bearing due from banks			32,038												36,680
			Bank premises and equipment, net			7,977												7,232
			Interest receivable and other assets, net			188,061												177,830
Total assets						$	3,867,814											$	3,765,281
Liabilities and Stockholders' Equity
			Interest-bearing transaction accounts			$	355,854		$	4,131		1.55		%				$	344,189		$	3,817		1.48		%
			Savings accounts			230,872			1,852			1.07		%				223,781			1,720			1.03		%
			Money market accounts			1,365,773			23,602			2.31		%				1,238,686			23,880			2.58		%
			Time accounts including CDARS			168,582			3,039			2.41		%				222,108			4,920			2.96		%
			Borrowings and other obligations 1			640			17			3.50		%				94			3			3.30		%
			Subordinated debenture 1, 5			43,923			2,435			7.39		%				—			—			—		%
			Total interest-bearing liabilities			2,165,644			35,076			2.17		%				2,028,858			34,340			2.26		%
			Demand accounts			1,257,511												1,253,469
			Interest payable and other liabilities			48,281												44,173
			Stockholders' equity			396,378												438,781
Total liabilities & stockholders' equity						$	3,867,814											$	3,765,281
Tax-equivalent net interest income/margin 1									$	92,932		3.37		%							$	76,761		2.86		%
Reported net interest income/margin 1									$	92,483		3.35		%							$	76,256		2.84		%
Tax-equivalent net interest rate spread												2.47		%										1.87		%
1 Interest income/expense is divided by actual number of days in the period times 360 days to correspond to stated interest rate terms, where applicable.
2 Yields on available-for-sale securities are calculated based on amortized cost balances rather than fair value, as changes in fair value are reflected as a component of stockholders' equity. Investment security interest is earned on 30/360 day basis monthly.
3 Yields and interest income on tax-exempt securities and loans are presented on a taxable-equivalent basis using the Federal statutory rate of 21 percent.
4 Average balances on loans outstanding include non-performing loans. The amortized portion of net loan origination fees is included in interest income on loans, representing an adjustment to the yield.
5 Net loan origination costs in interest income totaled $337 thousand and $427 thousand for the three months ended September 30, 2026 and June 30, 2026 and totaled $1.2 million for both the nine months ended September 30, 2026 and 2025, respectively.

12

1 Text 95,96,96 Light Gray 232, 232, 232 Black 0, 0, 0 White 255, 255, 255 Accent 1 7,89,52 Accent 2 248,153,40 Accent 3 254,217,129 Accent 4 52,153,70 Accent 5 5,39,67 Accent 6 171,184,195 Third Quarter 2026 Results October 26, 2026

2 Text 95,96,96 Light Gray 232, 232, 232 Black 0, 0, 0 White 255, 255, 255 Accent 1 7,89,52 Accent 2 248,153,40 Accent 3 254,217,129 Accent 4 52,153,70 Accent 5 5,39,67 Accent 6 171,184,195 Forward-Looking Statements This discussion of financial results includes forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, (the "1933 Act") and Section 21E of the Securities Exchange Act of 1934, as amended, (the "1934 Act"). Those sections of the 1933 Act and 1934 Act provide a "safe harbor" for forward-looking statements to encourage companies to provide prospective information about their financial performance so long as they provide meaningful, cautionary statements identifying important factors that could cause actual results to differ significantly from projected results. Our forward-looking statements include descriptions of plans or objectives of management for future operations, products or services, and forecasts of revenues, earnings or other measures of economic performance. Forward-looking statements can be identified by the fact that they do not relate strictly to historical or current facts. They often include the words "believe," "expect," "intend," "estimate" or words of similar meaning, or future or conditional verbs preceded by "will," "would," "should," "could" or "may." Forward-looking statements are based on management's current expectations regarding economic, legislative, and regulatory issues that may affect our earnings in future periods. Factors that could cause future results to vary materially from current management expectations include, but are not limited to, the preliminary nature of certain adjustments to prior financial statements disclosed in an 8-K filed by the Company on February 24, 2026 and the Form 10-K filed by the Company on March 13, 2026 and included in this presentation, general economic conditions and the economic uncertainty in the United States and abroad, including economic or other disruptions to financial markets caused by the Trump administration's approach to tariffs and trade, acts of terrorism, war, impacts from inflation, supply chain disruptions, changes in interest rates (including the actions taken by the Federal Reserve to control inflation), California's unemployment rate, deposit flows, real estate values, and expected future cash flows on loans and securities; the impact of adverse developments at other banks, including bank failures, that impact general sentiment regarding the stability and liquidity of banks; costs or effects of acquisitions; competition; changes in accounting principles, policies or guidelines; changes in legislation or regulation; natural disasters (such as wildfires and earthquakes in our area); adverse weather conditions; interruptions of utility service in our markets for sustained periods; and other economic, competitive, governmental, regulatory and technological factors (including external fraud and cybersecurity threats) affecting our operations, pricing, products and services; and successful integration of acquisitions. These and other important factors detailed in various securities law filings made periodically by Bancorp, copies of which are available from us at no charge. Forward-looking statements speak only as of the date they are made. Bancorp undertakes no obligation to release publicly the result of any revisions to these forward-looking statements that may be made to reflect events or circumstances that occur after the date of this press release or to reflect the occurrence of unanticipated events. GAAP to Non-GAAP Financial Measures This presentation includes non-GAAP financial measures as shown in the Appendix of this presentation.

S E C T I O N Text 95,96,96 Light Gray 232, 232, 232 Black 0, 0, 0 White 255, 255, 255 Accent 1 7,89,52 Accent 2 248,153,40 Accent 3 254,217,129 Accent 4 52,153,70 Accent 5 5,39,67 Accent 6 171,184,195 Franchise Highl ights 01

4 Text 95,96,96 Light Gray 232, 232, 232 Black 0, 0, 0 White 255, 255, 255 Accent 1 7,89,52 Accent 2 248,153,40 Accent 3 254,217,129 Accent 4 52,153,70 Accent 5 5,39,67 Accent 6 171,184,195 Bank of Marin Bancorp Novato, CA Headquarters BMRC NASDAQ $439.6 Million Market Cap $3.9 Billion Total Assets 3.69% Dividend Yield 15.59% Total Bancorp RBC BMRC AT A GLANCE O P T I O N 2 Data as of 9/30/26 Relationship Banking Build strong, long-term customer relationships based on trust, integrity and expertise, inspiring loyalty through exceptional service. Disciplined Fundamentals Apply a disciplined business approach with sound banking practices, high quality products, and consistent fundamentals ensuring continued strong results. Community Commitment Give back to the communities that we serve through active employee volunteerism, nonprofit board leadership and financial contributions. 27 Branch Locations 8 Commercial Banking Offices

5 Text 95,96,96 Light Gray 232, 232, 232 Black 0, 0, 0 White 255, 255, 255 Accent 1 7,89,52 Accent 2 248,153,40 Accent 3 254,217,129 Accent 4 52,153,70 Accent 5 5,39,67 Accent 6 171,184,195 Bob Gotelli EVP, Human Resources Director • 33 years of human resources experience • Joined Bank of Marin in 2000 David Bloom EVP, Head of Commercial Banking • 32 years of commercial banking experience • Joined Bank of Marin in 2023 Tim Myers President and Chief Executive Officer • 29 years of finance and banking experience • Joined Bank of Marin in 2007 Sathis Arasadi EVP, Chief Information Officer • 34 years of engineering, technology, and fintech experience • Joined Bank of Marin in 2023 Dave Bonaccorso EVP, Chief Financial Officer • 31 years of financial services experience • Joined Bank of Marin in 2023 Misako Stewart EVP, Chief Credit Officer • 36 years of banking experience • Joined Bank of Marin in 2013 195 Years of Combined Experience Through Various Economic Cycles

6 Text 95,96,96 Light Gray 232, 232, 232 Black 0, 0, 0 White 255, 255, 255 Accent 1 7,89,52 Accent 2 248,153,40 Accent 3 254,217,129 Accent 4 52,153,70 Accent 5 5,39,67 Accent 6 171,184,195 A strategic and disciplined approach to delivering long-term value 0 1 0 2 0 3 0 4 Grow NON-INTEREST INCOME Scale through EFFICIENCY GAINS and ACQUISITIONS Invest in TALENT and TECHNOLOGY Drive high-quality LOAN GROWTH

7 Text 95,96,96 Light Gray 232, 232, 232 Black 0, 0, 0 White 255, 255, 255 Accent 1 7,89,52 Accent 2 248,153,40 Accent 3 254,217,129 Accent 4 52,153,70 Accent 5 5,39,67 Accent 6 171,184,195 Third Quarter 2026 Overview 1 See Reconciliation of Non-GAAP Financial Measures in the Appendix Highlights • YTD EPS up 62% (non-GAAP) over prior year • Return on average tangible common equity improved to 12.26% from 11.55% • Net interest margin was 3.48% compared to 3.38% in the prior quarter mainly due to improved average loan yields of 11 basis points • Total loans increased by $43.4 million, or 2.07%, through continued strong fundings and the purchase of a $31.1 million California residential mortgage pool • Loan fundings in Q3 were $63.6 million ($102.4 million total commitments) • Cost of deposits decreased to 1.24% from 1.28%; deposits increased by $25.3 million ($45.0 million noninterest-bearing) • Non-interest income grew 15.8% including an increase of $0.3 million in service charges on business deposits Key Operating Trends • Tax-equivalent yield on interest-earning assets increased 6bps in Q3 over Q2 mainly due to improved average loan yields • Weighted average rate on new loans of 6.65% exceeded the weighted average payoff rate of 5.93% • Non-interest expense decreased $1.0 million following seasonally high levels in Q2 mostly in salaries and related benefits Capital • Tier I leverage ratio increased to 9.04% and 9.69% for the Bancorp and Bank, respectively • Total risk-based capital improved to 15.59% and 14.83% for the Bancorp and Bank, respectively • Due to rising market interest rates, TCE/TA declined to 8.05% and 8.69% for the Bancorp and Bank, respectively • Book value per share and tangible book value per share also decreased to $23.37 and $18.81, respectively Deposits and Liquidity • Spot rate on deposits at 9/30/2026 of 1.27% (interest-bearing 2.05%) compared to 6/30/2026 of 1.28% (interest-bearing 2.03%) • Noninterest-bearing deposits as a percentage of total deposits increased to 37.8% from 36.7% • Immediately available net funding of $2.2 billion Credit Quality • Provision for credit losses and for unfunded commitments of $0.5 million and $0.3 million, respectively, due to loan growth • Classified loans increased to 1.63% of total loans in Q3 compared to 0.95% in the prior quarter largely due to one relationship; no expected loss potential • Non-accrual loans increased to 0.45% of total loans from 0.40% in the prior quarter

8 Text 95,96,96 Light Gray 232, 232, 232 Black 0, 0, 0 White 255, 255, 255 Accent 1 7,89,52 Accent 2 248,153,40 Accent 3 254,217,129 Accent 4 52,153,70 Accent 5 5,39,67 Accent 6 171,184,195 Focused on Building Long-Term Shareholder Value Strong Core Deposit Franchise • Largest community bank in Marin County with 11.21% market share 1 • 37.8% noninterest-bearing deposits with a 1.24% cost of deposits in Q3 Improving Margin Outlook • Prior year investment securities repositioning expanded margin • Continued loan growth at higher rates • Continued deposit price discipline Seasoned Risk Management • $17.6 million downgrade from special mention to classified largely due to one $14.1 million relationship experiencing borrower-specific challenge; no expected loss potential • Minimal increase in non-accrual loans, quarter over quarter • Low NOO CRE office exposure in the City of San Francisco at 2% of total loans (3% of total NOO-CRE) and a weighted average 60% LTV Prudent Loan Growth • YTD total loan commitments up 21% • Purchase of California residential mortgage pool with excess liquidity • Key opportunistic relationship banking talent acquisitions • 63.16% loan-to-deposit ratio provides runway for additional growth Robust Capital Levels & Liquidity • Regulatory capital ratios remain comfortably above “well-capitalized” thresholds • $2.2 billion in available liquidity 1Source: S&P Global Market Intelligence - FDIC deposit market share data as of June 30, 2026

9 Text 95,96,96 Light Gray 232, 232, 232 Black 0, 0, 0 White 255, 255, 255 Accent 1 7,89,52 Accent 2 248,153,40 Accent 3 254,217,129 Accent 4 52,153,70 Accent 5 5,39,67 Accent 6 171,184,195 Focused on Delivering Long-Term, Consistent Growth ▪ Proven ability to grow both organically and through M&A ▪ Consistent cash dividend provides stable and reliable return for shareholders ▪ Tangible capital remained resilient demonstrating a strong capital position throughout the rate cycle ▪ 2024 and 2025 balance sheet repositionings reduced investment portfolio duration Note: Tangible book value per share (TBVPS) equals total shareholders’ equity, less intangible assets including goodwill and core deposit intangibles, divided by outstanding common shares at period end. Accumulated other comprehensive income (AOCI) represents the unrealized gains (losses) on available-for-sale securities, net of tax. Components of these calculations were derived from our financial reports filed with the SEC for each respective period. Additional information for September 30, 2026 can be found in the Reconciliation of Non-GAAP Financial Measures in the Appendix. Tangible Book Value Per Share and Cumulative Cash Dividends $1.73 $2.29 $2.92 $3.72 $4.64 $5.58 $6.56 $7.56 $8.56 $9.56 $9.81 $10.06 $10.31 $18.08 $18.81 $20.28 $22.24 $24.02 $23.29 $20.85 $22.44 $22.37 $19.87 $19.77 $19.92 $18.81 Cumulative Cash Dividends TBVPS TBVPS (Excl AOCI) 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 1Q26 2Q26 Q326 $— $5.00 $10.00 $15.00 $20.00 $25.00 $30.00

Text 95,96,96 Light Gray 232, 232, 232 Black 0, 0, 0 White 255, 255, 255 Accent 1 7,89,52 Accent 2 248,153,40 Accent 3 254,217,129 Accent 4 52,153,70 Accent 5 5,39,67 Accent 6 171,184,195 S E C T I O N Income Statement Highl ights 02

11 Text 95,96,96 Light Gray 232, 232, 232 Black 0, 0, 0 White 255, 255, 255 Accent 1 7,89,52 Accent 2 248,153,40 Accent 3 254,217,129 Accent 4 52,153,70 Accent 5 5,39,67 Accent 6 171,184,195 • Linked-quarter NIM increased 10bps due mostly to an 11bps increase in loan yields, a 4bps decrease in cost of deposits, and the use of one-way sales of deposits, which improved the mix of assets and liabilities • Higher percentage of noninterest-bearing deposits resulted in a reduction in the cost of deposits to 1.24% in Q3 from 1.28% in Q2 • The Bank's strong percentage of noninterest-bearing deposits positions it well for a relatively low deposit beta in a rising rate cycle, consistent with the Q1 2022 to Q3 2024 period (29% total deposit beta compared to 43% for peers1) • Cash and other floating assets totaled $632 million as of September 30, 2026 Net Interest Margin Drivers 3.38% 0.12% (0.04)% (0.03)% 0.04% 3.48% 2Q'26 Loans Securities Cash Deposits 3Q'26 Net Interest Margin Linked-Quarter Change 2.61% 2.42% 2.27% 2.26% 2.26% 2.16% 2.10% 2.04% 2.03% 5.43% 4.82% 4.50% 4.50% 4.46% 4.02% 3.75% 3.75% 3.79% IB Deposits Fed Funds 3Q24 4Q24 1Q25 2Q25 3Q25 4Q25 1Q26 2Q26 3Q26 Avg. Quarterly Cost of IB Deposits vs. Fed Funds Net Interest Income Simulation 3Q'26 Immediate Change in Interest Rates Est. Change in NII, as % in Year 1 in Year 2 Up 400bp -1.7 % 9.4 % Up 300bp -1.1 % 7.4 % Up 200bp -0.6 % 5.1 % Up 100bp -0.1 % 3.0 % Rates Unchanged 0.0 % 0.0 % Down 100bp -2.6 % -5.4 % Down 200bp -4.9 % -9.2 % Down 300bp -7.5 % -13.7 % Down 400bp -9.5 % -17.6 % *Please see our 10-Q’s and 10-K’s for more information regarding these simulations.1Peer group is U.S. commercial banks with $3 billion to $5 billion in total assets, as defined by S&P Global Market Intelligence

12 Text 95,96,96 Light Gray 232, 232, 232 Black 0, 0, 0 White 255, 255, 255 Accent 1 7,89,52 Accent 2 248,153,40 Accent 3 254,217,129 Accent 4 52,153,70 Accent 5 5,39,67 Accent 6 171,184,195 • Consistent and diverse sources of non-interest income bolster revenue through cycles Investment in our people, branches and technology provide a runway for future growth Non-interest Income1 ($ in millions) Non-interest Expense ($ in millions) 1See Reconciliation of GAAP to Non-GAAP Financial Measures (Excluding Loss on Sale of Securities), included in the Appendix of this document 1 Sources of NII $8.6 $10.1 $10.9 $10.9 $11.2 $11.6 $14.2 0.30% 0.29% 0.25% 0.27% 0.30% 0.30% 0.37% Non-interest income Non-interest income/avg. assets 2020 2021 2022 2023 2024 2025 Annualized 2026 $58.5 $72.6 $75.3 $77.1 $78.7 $81.3 $86.3 55.6% 63.1% 54.4% 73.2% 112.1% 276.7% 58.7% 69.3% 76.6% 69.2% Non-interest expense Efficiency ratio *Non-GAAP excl sec sale loss 2020 2021 2022 2023 2024 2025 Annualized 2026 Salaries & benefits 53% Occupancy & equipment 9% Data processing 6% Professional services 6% FDIC Ins 2% Other 24% Total Non-Interest Components Wealth mgmt & trust 16% Service charges 16% BOLI 18% Interchange fees 11% FHLB dividends 14% One-way sales fees 8% Other 18% 11 • Service charges on business deposit accounts increased by $251 thousand in Q3

13 Text 95,96,96 Light Gray 232, 232, 232 Black 0, 0, 0 White 255, 255, 255 Accent 1 7,89,52 Accent 2 248,153,40 Accent 3 254,217,129 Accent 4 52,153,70 Accent 5 5,39,67 Accent 6 171,184,195 Loans & Securities — Repricing & Maturity $ in millions, unless otherwise indicated Total Loans * at 9/30/2026 Repricing Term Rate Structure 3 mo or less 3-12 mos 1-3 years 3-5 years 5-15 years Over 15 years Total Floating Rate Variable Rate Floating & Variable Rate at Floor Fixed Rate C&I $72.7 $9.8 $19.9 $39.3 $12.1 $0.7 $154.5 $66.2 $5.5 $2.8 $80.0 Real estate: Owner-occupied CRE $17.4 $14.8 $75.9 $77.0 $100.7 $0.2 $286.0 $0.2 $58.5 $68.0 $159.3 Non-owner occupied CRE $69.6 $115.4 $353.5 $614.7 $230.9 $0.0 $1,384.1 $8.4 $197.5 $324.0 $854.2 Construction $23.2 $2.6 $0.0 $0.0 $0.0 $0.0 $25.8 $22.0 $0.0 $0.0 $3.8 Home equity $100.3 $0.0 $0.0 $0.0 $0.5 $0.0 $100.8 $100.4 $0.0 $0.0 $0.4 Other residential $7.9 $26.8 $21.3 $15.9 $26.9 $36.4 $135.2 $0.0 $13.7 $84.1 $37.4 Installment & other consumer $1.7 $9.0 $7.8 $3.0 $36.4 $0.1 $58.0 $1.0 $6.1 $10.3 $40.6 Total $292.8 $178.4 $478.4 $749.9 $407.5 $37.4 $2,144.4 $198.2 $281.3 $489.2 $1,175.7 % of Total 14 % 8 % 22 % 35 % 19 % 2 % 100 % 9 % 13 % 23 % 55 % Weighted Average Rate 6.71 % 4.75 % 5.31 % 5.35 % 4.78 % 6.25 % 5.38 % Investment Securities * at 09/30/2026 Projected Principal Cash Flow Distribution 3 mo or less 3-12 mos 1-3 years 3-5 years 5-10 years Over 10 years Total Principal (par) $46.4 $118.1 $398.1 $351.5 $306.7 $70.4 $1,291.2 % of Total 4 % 9 % 31 % 27 % 24 % 5 % 100 %

Text 95,96,96 Light Gray 232, 232, 232 Black 0, 0, 0 White 255, 255, 255 Accent 1 7,89,52 Accent 2 248,153,40 Accent 3 254,217,129 Accent 4 52,153,70 Accent 5 5,39,67 Accent 6 171,184,195 S E C T I O N Balance Sheet Highl ights 03

15 Text 95,96,96 Light Gray 232, 232, 232 Black 0, 0, 0 White 255, 255, 255 Accent 1 7,89,52 Accent 2 248,153,40 Accent 3 254,217,129 Accent 4 52,153,70 Accent 5 5,39,67 Accent 6 171,184,195 • Loan fundings in Q3 were $63.6 million ($102.4 million total commitments) • Notable pipeline growth and diversification from key hires, compensation program enhancements, and calling programs • Average loan funded rate 6.65% exceeded payoff rate of 5.93% • Used excess liquidity to purchase $31.1 million California residential mortgage pool expected to provide attractive risk- adjusted returns Prudent, Sustainable Model for Loan Growth $2.256 $2.093 $2.074 $2.083 $2.121 $2.144 4.23% 4.29% 4.65% 4.83% 4.99% 5.13% Total Loans SBA PPP Loans Average Annual TE Yield on Loans *2021 2022 2023 2024 2025 YTD 3Q'26 Total Loans ($ in billions) *Includes American River Bank loans acquired in 3Q'21 1 Three months ended Nine months ended (in millions; unaudited) September 30, 2026 June 30, 2026 September 30, 2025 QoQ Variance % CQ vs PYQ % September 30, 2026 September 30, 2025 YoY Variance % Gross loans beginning balance $ 2,101.0 $ 2,115.7 $ 2,073.6 $ (14.7) (1) % $ 27.4 1 % $2,120.9 $ 2,083.3 $ 37.6 2 % Newly funded 63.6 62.8 69.0 0.8 1 % (5.4) (8) % 187.2 167.0 20.2 12 % New total commitments1 102.4 98.4 99.8 4.0 4 % 2.6 3 % 281.3 232.5 48.8 21 % Purchased 31.1 — 0.2 31.1 NM 30.9 NM 31.1 0.2 30.9 NM Net increase (decrease) in line of credit utilization 2.5 14.5 2.5 (12.0) (83) % — — % 17.6 (3.2) 20.8 (650) % Payoffs (31.6) (71.2) (33.9) 39.6 (56) % 2.3 (7) % (133.4) (95.9) (37.5) 39 % Charge-offs — — — — NM — NM (7.3) (0.9) (6.4) 711 % Note sales — — — — NM — NM (9.1) — (9.1) NM Amortization (22.2) (20.8) (21.0) (1.4) 7 % (1.2) 6 % (62.6) (60.1) (2.5) 4 % Gross loans ending balance $ 2,144.4 $ 2,101.0 $ 2,090.4 $ 43.4 2 % $ 54.0 3 % $2,144.4 $ 2,090.4 $ 54.0 3 % 1 New total commitments includes both newly funded loans and new unfunded commitments Loans Rollforward ($ in thousands)

16 Text 95,96,96 Light Gray 232, 232, 232 Black 0, 0, 0 White 255, 255, 255 Accent 1 7,89,52 Accent 2 248,153,40 Accent 3 254,217,129 Accent 4 52,153,70 Accent 5 5,39,67 Accent 6 171,184,195 Well-Diversified Loan Portfolio As of 9/30/26 - No material changes from 2Q'26 • Loan portfolio is well-diversified across borrowers, industries, loan and property types within our geographic footprint • 88% of all loans and 92% of loans excluding nonprofit organizations are guaranteed by owners of the borrowing entities • Non-owner occupied commercial real estate is well-diversified by property type with 88% of loan balances (89% of loan balances excluding nonprofit organizations) guaranteed by owners of the borrowing entities • Since 2001, net charge-offs for all NOO-CRE and OO-CRE total $9.7 million • Construction loans represent a small portion of the overall portfolio NOO-CRE 65% OO-CRE 13% Construction 1% C&I 7% Consumer 14% Total Loans $2.1B Office 27% Warehouse & Industrial 13% Retail 18% Multi-Family 18% Mixed Use 7% Other 17% Total NOO-CRE Loans $1.4B

17 Text 95,96,96 Light Gray 232, 232, 232 Black 0, 0, 0 White 255, 255, 255 Accent 1 7,89,52 Accent 2 248,153,40 Accent 3 254,217,129 Accent 4 52,153,70 Accent 5 5,39,67 Accent 6 171,184,195 Strong Deposit Franchise Total Deposit Mix at 3Q'26Total Deposits ($ in millions) $3,574 $3,290 $3,220 $3,416 $3,395 $1,777 $1,310 $1,275 $1,254 $1,282 $350 $357 $323 $418 $247 $1,328 $1,372 $1,380 $1,538 $1,724 $119 $251 $242 $206 $142 Noninterest- bearing transaction Interest-bearing transaction Savings & MMDA Time 2022 2023 2024 2025 3Q'26 Noninterest- Bearing Transaction 37.8% Interest- Bearing Transaction 7.3% Savings 6.6% Money Market 44.1% Time 4.2% $3.40B

18 Text 95,96,96 Light Gray 232, 232, 232 Black 0, 0, 0 White 255, 255, 255 Accent 1 7,89,52 Accent 2 248,153,40 Accent 3 254,217,129 Accent 4 52,153,70 Accent 5 5,39,67 Accent 6 171,184,195 • Q3 Cost of deposits: 1.24% (interest-bearing 2.03%) • 9/30/2026 Spot rate: 1.27% (interest-bearing 2.05%) • Q3 Cost of deposits for our 436 new relationships: 0.55% (interest-bearing 1.34%) • Noninterest-bearing deposits as a percentage of total deposits continues to exceed rates of peers, ending the quarter at 37.8% • Business balances totaled 63.2% of total deposits compared to consumer balances at 36.8% • Largest community bank in Marin County (#5 overall, 11.21% share)1 with opportunities for further growth in markets including greater Sacramento and the East Bay 1Source: S&P Global Market Intelligence - FDIC deposit market share data as of June 30, 2026 • (in thousands; except for # of Accounts) Interest-Bearing Noninterest- Bearing Total % of Total Consumer Account Balances $ 909,976 $ 338,193 $ 1,248,169 36.8 % # of Accounts 13,462 16,948 30,410 67.6 % Avg Balance Per Account $ 68 $ 20 $ 41 Business Account Balances $ 1,128,211 $ 1,011,637 $ 2,139,847 63.2 % # of Accounts 3,838 10,715 14,553 32.4 % Avg Balance Per Account $ 294 $ 94 $ 147 Totals Account Balances $ 2,038,187 $ 1,349,830 $ 3,388,016 # of Accounts 17,300 27,663 44,963 Avg Balance Per Account $ 118 $ 49 $ 75 *Excludes internal operating accounts such as holding company cash and deposit settlement accounts totaling $27.7 million Deposit Accounts Mix - Consumer vs Business 3Q'26 Cost of Deposits & Interest-Bearing Deposits vs Peers PEER Cost of deposits PEER Cost of interest-bearing deposits BMRC Cost of deposits BMRC Cost of interest-bearing deposits 3Q24 1Q25 3Q25 1Q26 3Q26 1.00% 2.00% 3.00% Noninterest-Bearing Deposits/Total Deposits (%) vs Peers BMRC Noninterest-bearing / Total deposits PEER Noninterest-bearing / Total deposits 3Q24 1Q25 3Q25 1Q26 3Q26 20% 30% 40% 50% Deposit Highlights *Peer group U.S. Commercial banks $3-$5B; source S&P Global Market Intelligence

19 Text 95,96,96 Light Gray 232, 232, 232 Black 0, 0, 0 White 255, 255, 255 Accent 1 7,89,52 Accent 2 248,153,40 Accent 3 254,217,129 Accent 4 52,153,70 Accent 5 5,39,67 Accent 6 171,184,195 1 Related tax benefit calculated using blended statutory rate of 29.5636% High-Quality Securities Portfolio Generates Cash Flow Data as of 9/30/26 AFS Securities Portfolio Agency MBS (Fixed) 42% Agency CMO (Fixed) 12% Agency CMO (Floating) 3%Agency CMBS (Fixed) 25% Agency CMBS (Floating) 12% Debentures of government agencies (Fixed) 2% Municipal Bonds (Fixed) 4% (at Fair Value) $1.215B Tax Equivalent Yield — 4.07% Effective Duration — 3.0 Unrealized Losses, net (pre tax) — $74 million Unrealized Losses, net (after tax1) — $52 million Fixed rate securities at Fair Value: $1.032 billion or 85% of total Floating rate securities at Fair Value: $183 million or 15% of total

20 Text 95,96,96 Light Gray 232, 232, 232 Black 0, 0, 0 White 255, 255, 255 Accent 1 7,89,52 Accent 2 248,153,40 Accent 3 254,217,129 Accent 4 52,153,70 Accent 5 5,39,67 Accent 6 171,184,195 Strong Liquidity: $2.2 Billion in Net Availability • The Bank has long-established minimum liquidity requirements regularly monitored using metrics and tools similar to larger banks, such as the liquidity coverage ratio and multi-scenario, long-horizon stress tests • Deposit outflow assumptions for liquidity monitoring and stress testing are conservative relative to actual experience At September 30, 2026 ($ in millions) Total Available Amount Used Net Availability Internal Sources Unrestricted Cash 1 $ 247.2 $ — $ 247.2 Unencumbered Securities 518.6 — 518.6 External Sources FHLB line of credit 964.0 — 964.0 FRB line of credit 291.8 — 291.8 Lines of credit at correspondent banks 140.0 — 140.0 Total Liquidity $ 2,161.6 $ — $ 2,161.6 1 Excludes cash items in transit Note: Off-balance sheet one-way sell deposits were zero at September 30, 2026 Liquidity & Uninsured Deposits ($ in millions) 1.8x Coverage Ratio $2,161.6 $1,211.0 Liquidity Est. Uninsured and/or Uncollateralized Deposits

Text 95,96,96 Light Gray 232, 232, 232 Black 0, 0, 0 White 255, 255, 255 Accent 1 7,89,52 Accent 2 248,153,40 Accent 3 254,217,129 Accent 4 52,153,70 Accent 5 5,39,67 Accent 6 171,184,195 S E C T I O N 04 Capita l & Asset Qual i ty

22 Text 95,96,96 Light Gray 232, 232, 232 Black 0, 0, 0 White 255, 255, 255 Accent 1 7,89,52 Accent 2 248,153,40 Accent 3 254,217,129 Accent 4 52,153,70 Accent 5 5,39,67 Accent 6 171,184,195 Robust Capital Ratios As of 9/30/26 The Bank's capital plan and point-in-time capital stress tests indicate that capital ratios will remain above regulatory well- capitalized and internal policy minimums throughout a five- year forecast horizon and across stress scenarios such as additional unrealized losses on the investment portfolio, additional deposit growth or decline, loan credit quality deterioration, and potential share repurchases. 6.5% 8.0% 10.0% 5.0% 13.9% 13.9% 14.8% 9.7% 8.7% 13.0% 13.0% 15.6% 9.0% 8.1% Well Capitalized Threshold Bank of Marin Bank of Marin Bancorp Common Equity Tier- One Risk-Based Capital Total Tier-One Risk- Based Capital Total Risk-Based Capital Tier-One Leverage Tangible Common Equity

23 Text 95,96,96 Light Gray 232, 232, 232 Black 0, 0, 0 White 255, 255, 255 Accent 1 7,89,52 Accent 2 248,153,40 Accent 3 254,217,129 Accent 4 52,153,70 Accent 5 5,39,67 Accent 6 171,184,195 ($ in millions at Fair Value) History of Strong Asset Quality • Special mention loans decreased by $35.8 million due to upgrades and payoffs of $18.2 million and $17.6 million in downgrades to classified. Classified loans increased by $15.2 million to 1.63% of total loans from 0.95% last quarter. The primary driver of the decrease in special mention loans and the increase in classified loans was the downgrade of one $14.1 million owner-occupied commercial real estate relationship facing a borrower-specific challenge that is paying as agreed and has no expected loss potential. • Non-accrual loans increased by $1.2 million to 0.45% of total loans from 0.40% in the prior quarter • Allowance for credit losses to total loans of 1.07% remained stable from the prior quarter Non-accrual Loans / Total Loans Quarterly Progression 1.51% 1.27% 0.41% 0.40% 0.45% 3Q25 4Q25 1Q26 2Q26 3Q26 —% 1.00% 2.00% Net Charge-Offs (Recoveries) as % of Average Loans 0.00% 0.02% 0.00% 0.00% 0.34% 0.00% 0.00% 2022 2023 2024 2025 Q1 26 Q2 26 Q3 26 0.00% 0.25% 0.50% 0.75% 1.00%

24 Text 95,96,96 Light Gray 232, 232, 232 Black 0, 0, 0 White 255, 255, 255 Accent 1 7,89,52 Accent 2 248,153,40 Accent 3 254,217,129 Accent 4 52,153,70 Accent 5 5,39,67 Accent 6 171,184,195 Low Refinance Risk in NOO CRE Portfolio through 2027 • We conducted a deep dive on loans maturing or repricing before year-end 2027 • Portfolio is well-positioned to absorb a higher rate environment at maturity or repricing date • Wtd. Avg. DSC Assumptions for Maturing Loans: Current 5-Year Treasury Constant Maturity rate + spread of 3.00%, fully drawn commercial real estate lines of credit, 25-year amortization • Wtd. Avg. DSC Assumptions for Repricing Loans: Current market interest rate + contractual spread, fully drawn commercial real estate lines of credit, remaining amortization on each loan Maturing Loan Commitments > $1.0MM # of loans Commitment (millions) Outstanding Balance (millions) Wtd. Avg. Rate Wtd. Avg. DSC 2026 13 $44.7 $38.7 5.25% 1.20x 2027 26 $75.7 $73.7 4.76% 1.41x TOTAL 39 $120.4 $112.4 Repricing Loan Commitments > $1.0MM # of loans Commitment (millions) Outstanding Balance (millions) Wtd. Avg. Rate Wtd. Avg. DSC 2026 6 $8.5 $8.5 4.04% 1.15x 2027 16 $40.0 $40.0 3.75% 1.49x TOTAL 22 $48.5 $48.5 *Commitments, outstanding balances and weighted average rates as of 9/30/26

25 Text 95,96,96 Light Gray 232, 232, 232 Black 0, 0, 0 White 255, 255, 255 Accent 1 7,89,52 Accent 2 248,153,40 Accent 3 254,217,129 Accent 4 52,153,70 Accent 5 5,39,67 Accent 6 171,184,195 • $373 million in credit exposure spread across our lending footprint comprised of 148 loans • $2.5 million average loan balance – largest loan at $15.3 million • 57% weighted average loan-to-value and 1.68x weighted average debt-service coverage ratio* • City of San Francisco NOO CRE office exposure is 2% of total loan portfolio and 3% of total NOO CRE loans NOO CRE Office Portfolio by County *Calculated for loans exceeding $1 million, based on the most recent annual review process Non-Owner Occupied Office Exposure As of 9/30/26 - No material changes from 2Q'26 Alameda 8% Marin 26% Napa 8% Sacramento 9% San Francisco 11% Sonoma 17% Other Bay Area 18% All Other 4% $373M City of S.F. NOO CRE Office Portfolio Total Balance: $41.5 million Average Loan Bal: $4.6 million Number of Loans: 10 Wtd. Average LTV*: 60% Wtd. Average DSC: 1.75x Average Occupancy: 97% All loans are secured by low rise buildings

26 Text 95,96,96 Light Gray 232, 232, 232 Black 0, 0, 0 White 255, 255, 255 Accent 1 7,89,52 Accent 2 248,153,40 Accent 3 254,217,129 Accent 4 52,153,70 Accent 5 5,39,67 Accent 6 171,184,195 *Calculated for loans exceeding $1 million, based on the most recent annual review process Note: Sacramento includes surrounding regional counties NOO CRE Portfolio Diversified Across Property Type & County As of 9/30/26 - No material changes from 2Q'26 Average Balance: $1.8M Largest Balance: $13.1M Total # of Loans: 141 Wtd. Avg. LTV*: 53% Average Balance: $2.1M Largest Balance: $13.9M Total # of Loans: 83 Wtd. Avg. LTV*: 49% Average Balance: $1.9M Largest Balance: $20.8M Total # of Loans: 130 Wtd. Avg. LTV*: 59% Alameda 9% Marin 16% Napa 14% Sacramento 19% San Francisco 2% Sonoma 18% Other Bay Area 16% All Other 7% Alameda 14% Marin 8% Napa 7% Sacramento 26% San Francisco 9% Sonoma 25% Other Bay Area 7% All Other 4% Alameda 23% Marin 9% Napa 4% Sacramento 19% San Francisco 17% Sonoma 16% Other Bay Area 4% All Other 8% Retail Warehouse & Industrial Multifamily $254M $174M $248M

27 Text 95,96,96 Light Gray 232, 232, 232 Black 0, 0, 0 White 255, 255, 255 Accent 1 7,89,52 Accent 2 248,153,40 Accent 3 254,217,129 Accent 4 52,153,70 Accent 5 5,39,67 Accent 6 171,184,195 ($ in millions at Fair Value) * Loan-to-value largely based on appraised values at origination, or updated appraisals for certain classified loans, and balances as of 9/30/26 Figures include two loans totaling $3 million that, for purposes of LTV, were moved from Construction Owner-Occupied CRE Portfolio As of 9/30/26 - No material changes from 2Q'26 Office 20% Industrial 25% Retail 7% Health Club 3% Mixed Use 3% Auto Dealer 5% Gas/Auto 7% Church 5% 1-4 Residential 3% Other 3% School 13% Wine 6% Alameda 15% Marin 20% Napa 13% Sacramento 22% Sonoma 8% San Francisco 5% Other Bay Area 16% All Other 1% OO CRE by County Average Balance: $1.1M Largest Loan: $14.0M Wtd. Avg. LTV*: 46% Total Balance: $289.0M Total Loans: 264 OO CRE by Type $289M $289M Alameda 6% Marin 22% Napa 17% Sacramento 22% San Francisco 19% Sonoma 6% Other Bay Area 9% Average Balance: $0.7M Largest Loan: $6.9M Wtd. Avg. LTV*: 54% Total Balance: $58.2M Total Loans: 80 OO CRE Office Portfolio by County $58M

28 Text 95,96,96 Light Gray 232, 232, 232 Black 0, 0, 0 White 255, 255, 255 Accent 1 7,89,52 Accent 2 248,153,40 Accent 3 254,217,129 Accent 4 52,153,70 Accent 5 5,39,67 Accent 6 171,184,195 ($ in millions at Fair Value) * Loan-to-value largely based on appraised values at origination, or updated appraisals for certain high dollar loans. and balances as of 9/30/26 Figures exclude two loans totaling $3 million that, for purposes of LTV, were moved to OO CRE Construction Portfolio Concentrations As of 9/30/26 Construction by Type Construction by County 1-4 Residential 62% Apartments 29% Land 8% Alameda 29% Marin 25% Napa 9% San Francisco 14% Santa Clara 12% Sonoma 2% Yolo 8% Average Project Balance: $4.8M Largest Project: $17.0M Wtd. Avg. LTV*: 60% Total Balance: $22.1M Unfunded Commitments: $35.8M Total Commitments: $57.9M Total Loans: 12 $57.9M$57.9M

Text 95,96,96 Light Gray 232, 232, 232 Black 0, 0, 0 White 255, 255, 255 Accent 1 7,89,52 Accent 2 248,153,40 Accent 3 254,217,129 Accent 4 52,153,70 Accent 5 5,39,67 Accent 6 171,184,195 Appendix

30 Text 95,96,96 Light Gray 232, 232, 232 Black 0, 0, 0 White 255, 255, 255 Accent 1 7,89,52 Accent 2 248,153,40 Accent 3 254,217,129 Accent 4 52,153,70 Accent 5 5,39,67 Accent 6 171,184,195 Reconciliation of GAAP to Non-GAAP Financial Measures (Excluding Loss on Sale of Securities) (in thousands; unaudited) Three months ended Nine months ended Pre-tax, pre-provision net income September 30, 2026 June 30, 2026 September 30, 2026 September 30, 2025 Income before provision for (benefit from) income taxes $ 13,674 $ 12,673 $ 37,944 $ 4,892 Provision for (reversal of) credit losses on loans 500 (320) 180 75 Provision for credit losses on unfunded loan commitments 325 — 325 — Pre-tax, pre-provision net income (GAAP) 14,499 12,353 38,449 4,967 Adjustments: Losses on sale of investment securities from portfolio repositioning — — — 18,736 Comparable pre-tax, pre-provision net income (non-GAAP) $ 14,499 $ 12,353 $ 38,449 $ 23,703

31 Text 95,96,96 Light Gray 232, 232, 232 Black 0, 0, 0 White 255, 255, 255 Accent 1 7,89,52 Accent 2 248,153,40 Accent 3 254,217,129 Accent 4 52,153,70 Accent 5 5,39,67 Accent 6 171,184,195 Reconciliation of GAAP to Non-GAAP Financial Measures (Excluding Loss on Sale of Securities) (in thousands, except per share amounts; unaudited) Three months ended Nine months ended Net income September 30, 2026 June 30, 2026 September 30, 2025 September 30, 2026 September 30, 2025 Net income (GAAP) $ 9,934 $ 9,246 $ 7,526 $ 27,690 $ 3,866 Adjustments: Losses on sale of investment securities from portfolio repositioning — — — — 18,736 Related income tax benefit1 — — — — (5,538) Adjustments, net of taxes — — — — 13,198 Comparable net income (non-GAAP) $ 9,934 $ 9,246 $ 7,526 $ 27,690 $ 17,064 Diluted earnings per share Weighted average diluted shares 16,040 15,991 15,934 16,003 15,979 Diluted earnings per share (GAAP) $ 0.62 $ 0.58 $ 0.47 $ 1.73 $ 0.24 Comparable diluted earnings per share (non-GAAP) $ 0.62 $ 0.58 $ 0.47 $ 1.73 $ 1.07 Return on average assets Average assets 3,766,498 3,850,140 3,828,876 3,867,814 3,765,281 Return on average assets (GAAP) 1.05 % 0.96 % 0.78 % 0.96 % 0.14 % Comparable return on average assets (non-GAAP) 1.05 % 0.96 % 0.78 % 0.96 % 0.61 % Return on average equity Average stockholders' equity 395,812 395,328 439,950 396,378 438,781 Return on average equity (GAAP) 9.96 % 9.38 % 6.79 % 9.34 % 1.18 % Comparable return on average equity (non-GAAP) 9.96 % 9.38 % 6.79 % 9.34 % 5.20 % Return on average tangible common equity Average goodwill and intangibles 74,192 74,393 75,011 74,390 75,226 Average tangible common equity 321,620 320,935 364,939 321,988 363,555 Return on average tangible common equity (GAAP) 12.26 % 11.56 % 8.18 % 11.50 % 1.42 % Comparable return on average tangible common equity (non-GAAP) 12.26 % 11.56 % 8.18 % 11.50 % 6.28 % Efficiency ratio Non-interest expense 20,571 21,597 20,291 64,707 61,287 Net interest income 31,400 30,781 27,156 92,483 76,256 Non-interest income (loss) (GAAP) 3,670 3,169 2,745 10,673 (10,002) Losses on sale of investment securities — — — — 18,736 Non-interest income (non-GAAP) $ 3,670 $ 3,169 $ 2,745 $ 10,673 $ 8,734 Efficiency ratio (GAAP) 58.65 % 63.62 % 67.86 % 62.73 % 92.50 % Comparable efficiency ratio (non-GAAP) 58.65 % 63.62 % 67.86 % 62.73 % 72.11 % 1Related income tax benefit calculated using blended statutory rate of 29.5636%

32 Text 95,96,96 Light Gray 232, 232, 232 Black 0, 0, 0 White 255, 255, 255 Accent 1 7,89,52 Accent 2 248,153,40 Accent 3 254,217,129 Accent 4 52,153,70 Accent 5 5,39,67 Accent 6 171,184,195 Contact Us Tim Myers President and Chief Executive Officer (415) 763-4970 timmyers@bankofmarin.com Dave Bonaccorso EVP, Chief Financial Officer (415) 884-4758 davebonaccorso@bankofmarin.com Media Requests: Yahaira Garcia-Perea Marketing & Corporate Communications Manager (916) 231-6703 yahairagarcia-perea@bankofmarin.com

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