Exhibit 99.1

CoBiz Financial Announces Second Quarter 2011 Results

Reports net income of $3.8 million

Denver — CoBiz Financial Inc. (Nasdaq: COBZ), a financial services company with $2.4 billion in assets, announced net income of $3.8 million for the second quarter of 2011, as compared to a net loss of $3.8 million for the second quarter of 2010.  Net income available to common shareholders was $0.08 per diluted common share versus a net loss of $0.13 per diluted common share in the prior-year quarter.

For the first six months of 2011, the Company reported net income of $7.1 million, or $0.14 per diluted common share versus a net loss of $8.5 million, or $0.28 loss per diluted common share for the six months ended June 30, 2010.

Financial Performance — Second Quarter 2011

·                  Net income available to common shareholders of $0.08 per diluted common share was a significant improvement from the net loss of $0.13 per diluted common share in the second quarter of 2010. The Company reported a net income available to common shareholders of $0.06 per diluted common share in the first quarter of 2011 (linked-quarter).

·                  Total loans were $1.7 billion as of June 30, 2011, a $20.8 million, or 5% annualized, increase from the prior linked-quarter.

·                  The provision for loan and credit losses (Provision) was $2.0 million for the second quarter of 2011, an $8.5 million reduction from the prior-year period.

·                  During the second quarter of 2011, the Company charged-off, net of recoveries, $2.1 million, as compared to $5.5 million in the first quarter of 2011 and $14.4 million during the second quarter of 2010. Recoveries included in net charge-offs were $0.9 million in the current quarter, versus $0.8 million in the first quarter of 2011 and $1.7 million in the prior year quarter.

·                  The allowance for loan and credit losses (Allowance) was 3.74% of total loans at June 30, 2011, as compared to 3.79% as of March 31, 2011, and 4.04% as of June 30, 2010. The Allowance covered 150% of nonperforming loans (NPLs) at June 30, 2011.

·                  Nonperforming assets (NPAs) were $65.1 million at June 30, 2011, or 2.69% of total assets, relatively unchanged from $64.1 million reported at March 31, 2011, and decreased 30% from prior-year period NPAs of $92.9 million.

·                  The net interest margin held relatively stable at 4.40%, compared to 4.41% in the first quarter of 2011 and 4.39% in the second quarter of 2010.

·                  Noninterest income was $8.8 million during the second quarter of 2011, compared to $8.0 million in the prior linked-quarter and $9.8 million for the prior-year quarter.

·                  Noninterest expenses decreased to $25.3 million in the current quarter, as compared to $25.5 million in the prior linked-quarter, and decreased 14% from prior-year quarter noninterest expenses of $29.5 million.

·                  Deposits and customer repurchase agreements (Customer Repos) decreased by $33.4 million on a linked-quarter basis, primarily due to a withdrawal from one of our significant deposit relationships.

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·                  The average cost of total deposits decreased to 45 basis points (0.45%) from 47 basis points in the linked-quarter and 67 basis points in the prior-year quarter.

“With many of the local banks in our markets struggling, most recently and notably in Colorado, I am very pleased with how well we are executing and how we are positioned in the market,” said Chairman and CEO Steve Bangert.

“For the second quarter, we recognized positive loan growth, reported a stable net interest margin, showed disciplined expense management and continued to control our asset quality levels, allowing us to report income of $3.8 million, or $0.08 per share.”

Loans

Total Loans at June 30, 2011, were $1.7 billion, an increase of $20.8 million on a linked-quarter basis. The Company continued to see declines in its Land Acquisition and Development (A&D) and Construction portfolios of $4.0 million and $8.8 million, respectively. Commercial Real Estate declined by $4.1 million. However, Commercial and Industrial (C&I) loans increased by $30.2 million, or 21.5% annualized. The Company saw C&I line utilization increase to 41.2% from 40.3% on a linked-quarter basis. The Company also experienced growth in Jumbo mortgage and tax-exempt financing. Jumbo mortgage loans, reported within the Consumer Loan category, totaled $41.7 million at June 30, 2011, a linked-quarter increase of $7.3 million.

The Company continues to diligently pursue new credit relationships at a time when the number of quality borrowers remains low and competition among banks to earn the business is high. New credit relationships of $94.0 million were added during the quarter and advances on existing lines totaled $54.6 million. New and advanced loans were offset by paydowns and maturities of $124.9 million during the second quarter.  In addition, the Company charged-off, excluding recoveries, $3.0 million during the current quarter.

Overall, loan portfolio composition continues to improve as concentrations in Land A&D and Construction have decreased. The C&I portfolio totaled $592.4 million, or 35.8% of total Loans at June 30, 2011, compared to 33.8% at June 30, 2010.  Commercial real estate accounted for 46.6% of total Loans, with owner-occupied properties tied to the Company’s C&I portfolio, representing 54.0% of this category. Overall, 61.0% of total Loans relate to the Company’s C&I book.

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The Land A&D portfolio totaled $72.1 million, or 4.4%, of the overall portfolio at June 30, 2011, compared to $111.4 million, or 6.6%, at June 30, 2010.  Over the past year the Company has focused on reducing the Land A&D portfolio by proactively working with customers and taking aggressive steps in provisioning for and charging-off problem credits.  Construction loans accounted for $76.6 million, or 4.6%, of the portfolio at June 30, 2011, compared to $99.5 million, or 5.9%, at June 30, 2010.

Investment Securities

The Company had investment securities available for sale with a carrying value of $629.2 million at June 30, 2011, a $21.8 million increase from March 31, 2011.  The unrealized gain on the investment portfolio increased $2.6 million from March 31, 2011, to $15.4 million at June 30, 2011.  The unrealized gain has remained relatively consistent from June 30, 2010.

The portfolio consists primarily of mortgage-backed securities (MBS) backed by U.S. government agencies with a cost basis of $388.9 million and a market value of $401.4 million. The remaining MBS are non-agency, private-label securities with a cost basis of $3.7 million and a market value of $2.3 million. The portfolio does not contain any collateralized debt obligations or securities backed by sub-prime mortgage loans. At June 30, 2011, the Company had agency debentures with a cost basis of $73.9 million and a market value of $74.4 million.  Investments also include single-issuer trust preferred securities, corporate debt securities and municipal bonds with a cost basis of $147.3 million and a fair value of $151.1 million.  All trust preferred securities in the Company’s portfolio continue to pay dividends.

Deposits and Customer Repo Balances

Deposit and Customer Repo balances ended the period at $2.1 billion, a decrease of $33.4 million on a linked-quarter basis and a decrease of $60.5 million from the prior-year quarter.  The linked-quarter decrease is primarily attributable to a decrease of $21.6 million in demand deposits, a $20.2 million decrease in CDs and a $12.8 million decrease in Customer Repo balances.  These decreases were offset by an increase of $17.6 million in NOW and $3.0 million in money market and Eurodollar deposits.  Noninterest-bearing demands accounts were 38.5% of total deposits at June 30, 2011.  As a result of the Company’s favorable funding mix, the average cost of total deposits for the second quarter of 2011 decreased to 45 basis points, compared to 47 basis points in the first quarter of 2011. For the first half of 2011, the cost of total deposits was 46 basis points, compared to 73 basis points in the same period of 2010.

Allowance for Loan and Credit Losses and Credit Quality

NPAs were $65.1 million at June 30, 2011, an increase of $1.1 million on a linked-quarter basis and a decrease of $27.8 million from the prior-year period.  The Company’s overall asset quality position continues to improve.  At June 30, 2011, NPAs to total assets decreased to 2.69% from 2.83% at year-end and 3.78% a year earlier.  Other real

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estate owned (OREO) and other repossessed assets remained relatively level at $23.8 million on a linked-quarter basis following three consecutive quarters of decreases.

Approximately 53% of NPLs are within the Colorado portfolio and 47% are in Arizona. On a linked-quarter basis, NPLs in Colorado increased $4.7 million, while all NPL categories in Arizona decreased by a combined $3.8 million.  The increase in Colorado NPLs was due to a $5.4 million Real Estate — mortgage loan that was placed on nonaccrual during the quarter.  Efforts to reduce high-risk loan concentration levels such as Land A&D have led to improvements in the Company’s overall asset quality position.  Land A&D NPLs currently represent 15% of total NPLs, compared to 23% at December 31, 2010 and 43% at December 31, 2009.  The decrease in nonperforming Land A&D represents approximately 73% of the overall decline in NPLs since the end of 2009.

Of the $23.8 million of OREO and repossessed assets ($23.6 million of OREO and $0.2 million of repossessed assets), $10.8 million, or 45.3%, is located in Colorado and $13.0 million, or 54.7%, is located in Arizona. The Company holds four properties with a carrying value in excess of $1.0 million, two in Colorado and two in Arizona.  The largest OREO property is in Colorado with a value of $6.3 million.  The Company recorded a valuation charge of $1.5 million on this property during the second quarter of 2011 based on an updated appraisal that reflected a valuation decrease.  The average OREO carrying value in Arizona is $0.4 million while in Colorado the average OREO carrying value (excluding the largest property) is $0.5 million.

Provision for the second quarter of 2011 totaled $2.0 million, an increase of $0.3 million on a linked-quarter basis but a decrease of $8.5 million over the same period in 2010.  While the Provision slightly increased on a linked-quarter basis, the Provision had decreased during the previous seven consecutive quarters.  The Allowance to NPLs at June 30, 2011, was 149.9% compared to 153.3% at the prior linked-quarter and 109.9% a year earlier.   The Company charged-off (net of recoveries) $2.1 million in the second quarter of 2011 compared to $5.5 million in the prior linked-quarter and $14.4 million during the year earlier period. The Allowance was relatively level with the prior linked-quarter, but had decreased $4.0 million from December 31, 2010, to $62.0 million at June 30, 2011.  At June 30, 2011, the Allowance had decreased $6.1 million from $68.1 million at June 30, 2010.  The Company’s Allowance to total loans decreased to 3.74% at June 30, 2011, from 4.01% at December 31, 2010.

Shareholders’ Equity

As of June 30, 2011, total shareholders’ equity was $209.1 million. The Company’s total tangible shareholders’ equity was $205.4 million. The tangible shareholders’ equity to tangible assets ratio was 8.5%, and the tangible common equity ratio was 5.9% at June

30, 2011.  (See the accompanying Reconciliation of Non-GAAP Measures to GAAP for the tangible shareholders’ equity and related ratios).

The Board of Directors of the Company declared a $0.01 cash dividend on our common stock to be paid on August 8, 2011 to shareholders of record on August 1, 2011.

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Net Interest Income and Margin

Net interest income for the second quarter of 2011 increased $0.2 million on a tax equivalent basis from the prior linked-quarter, to $24.6 million.  Net interest income on a tax equivalent basis for the second quarter of 2010 was $24.3 million.  The second quarter 2011 net interest margin (NIM) of 4.40% was relatively level with the prior linked-quarter NIM of 4.41% and the second quarter of 2010 NIM of 4.39%.

Average earning assets of $2.24 billion were stable during the second quarter of 2011 compared to the prior linked-quarter.  In the second quarter of 2011 the average net loan portfolio increased $6.7 million, while the average investment portfolio decreased $7.8 million on a linked-quarter basis. The yield on average earning assets in the second quarter of 2011 was stable at 4.88%, compared to 4.89% in the first quarter of 2011.

The rate paid on average interest-bearing liabilities decreased four basis points (0.04%) on a linked-quarter basis to 0.72%.  The Company continues to see higher interest-bearing average CD and Eurodollar balances shift into lower interest-bearing money market and noninterest-bearing demand accounts.  Including noninterest-bearing demand accounts, the rate paid on average deposits was 0.45% in the second quarter of 2011 compared to 0.47% and 0.67% in the respective linked- and prior-year-periods.

Noninterest Income

Noninterest income increased $0.8 million, or 9.4%, on a linked-quarter basis to $8.8 million for the second quarter of 2011.  Noninterest income was $9.8 million in the second quarter of 2010. As a percentage of total operating revenue, noninterest income increased to 26.5% for the second quarter of 2011 from 24.9% for the first quarter of 2011. Noninterest income as a percentage of total operating revenue was 28.7% for the second quarter of 2010.

The noninterest income linked-quarter increase of $0.8 million in the second quarter of 2011 is primarily attributable to an increase in earnings on equity method investments.

Operating Expenses

Noninterest expense decreased $0.2 million to $25.3 million in the second quarter of 2011, compared to $25.5 million for the first quarter of 2011. Noninterest expense was $29.5 million during the second quarter of 2010.  The Company’s efficiency ratio for the second quarter of 2011 was 73.4%, compared to 74.6% for the first quarter of 2011 and 76.0% for the second quarter of 2010.

Salaries and employee benefits increased $1.1 million in the second quarter of 2011 on a linked-quarter basis.  The increase was primarily due to higher bonus expense for expected year-end payouts related to the Company’s improved operating performance.  Other operating expenses decreased $0.9 million on a linked-quarter basis. Although the Company continues to experience elevated levels of loan- and OREO-related costs, such costs were down $0.5 million in the current quarter from the prior linked-quarter. FDIC

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and other assessments also decreased $0.4 million on a linked-quarter basis, due to changes in the FDIC’s assessment rates and calculation.

The net loss on securities, other assets and OREO decreased $0.4 million to $0.9 million on a linked-quarter basis, driven primarily by higher net gains on security transactions, offset partially by higher net OREO losses from valuation adjustments.

Year-over-year, noninterest expense for the second quarter of 2011 decreased $4.2 million, primarily due to a $3.1 million decrease in net losses on securities, other assets and OREO and a $2.2 million decrease in other operating expenses.  These decreases were offset by a $1.3 million increase in salaries and employee benefits.  The decrease in other operating expenses was driven by a $1.3 million reduction in loan- and OREO-related costs, a $0.4 million decrease in FDIC and other assessments, and a $0.5 million decrease in legal and professional services.  The increase in salaries and employee benefits was driven by a $0.8 million increase in bonus and incentives, and $0.4 million in base salaries and vacation expense.  The number of full-time equivalent employees was 547 at the end of the second quarter of 2011, compared to 544 at the end of the second quarter of 2010.

Earnings Conference Call

In conjunction with this release, you are invited to listen to the Company’s conference call on Friday, July 22, 2011, at 10:00 am MDT with Steve Bangert, CoBiz Chairman and CEO. The call can be accessed via the Internet at http://www.videonewswire.com/event.asp?id=80741 or by telephone at 877.493.9121, (conference ID # 81107238). International callers may dial:  973.582.2750.

Explanation of the Company’s Use of Non-GAAP Financial Measures

This earnings release contains GAAP financial measures and non-GAAP financial measures where management believes it to be helpful in understanding our results of operations. We believe these measures provide important supplemental information to investors. However, you should not rely on non-GAAP financial measures alone as measures of our performance.  Please see the accompanying Reconciliation of Non-GAAP Measures to GAAP for additional information.

Contact Information

CoBiz Financial Inc.

Lyne Andrich 303.312.3458

About CoBiz Financial

CoBiz Financial (NASDAQ:COBZ) is a $2.4 billion financial services company that serves the complete financial needs of businesses, business owners and professionals in Colorado and Arizona. The Company provides commercial banking services through Colorado Business Bank and Arizona Business Bank; wealth planning and investment management through CoBiz Wealth Management, and trust services through CoBiz

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Trust; property and casualty insurance brokerage and employee benefits through CoBiz Insurance; investment banking services through Green Manning & Bunch; and executive benefits consulting and wealth transfer services through Financial Designs Ltd.

Forward-Looking Information

This release contains forward-looking statements that describe CoBiz’s future plans, strategies and expectations. All forward-looking statements are based on assumptions and involve risks and uncertainties, many of which are beyond our control and which may cause our actual results, performance or achievements to differ materially from the results, performance or achievements contemplated by the forward-looking statements. Forward-looking statements can be identified by the fact that they do not relate strictly to historical or current facts. They often include words such as “believe,” “expect,” “anticipate,” “intend,” “plan,” “estimate” or words of similar meaning, or future or conditional verbs such as “would”, “could” or “may.” Forward-looking statements speak only as of the date they are made. Such risks and uncertainties include, among other things:

·                  Risks and uncertainties described in our reports filed with the Securities and Exchange Commission, including our most recent Form 10-K.

·                  Competitive pressures among depository and other financial institutions nationally and in our market areas may increase significantly.

·                  Adverse changes in the economy or business conditions, either nationally or in our market areas, could increase credit-related losses and expenses and/or limit growth.

·                  Increases in defaults by borrowers and other delinquencies could result in increases in our provision for losses on loans and related expenses.

·                  Our ability to manage growth effectively, including the successful expansion of our customer support, administrative infrastructure and internal management systems, could adversely affect our results of operations and prospects.

·                  Fluctuations in interest rates and market prices could reduce our net interest margin and asset valuations and increase our expenses.

·                  Our net interest margin may be negatively impacted if we are unable to profitably deploy excess cash into higher yielding loans or investments.

·                  The consequences of continued bank acquisitions and mergers in our market areas, resulting in fewer but much larger and financially stronger competitors, could increase competition for financial services to our detriment.

·                  Our continued growth will depend in part on our ability to enter new markets successfully and capitalize on other growth opportunities.

·                  Changes in legislative or regulatory requirements applicable to us and our subsidiaries could increase costs, limit certain operations and adversely affect results of operations.

·                  Changes in tax requirements, including tax rate changes, new tax laws and revised tax law interpretations may increase our tax expense or adversely affect our customers’ businesses.

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·                  If we were to conclude that an additional valuation allowance is necessary for our net deferred tax asset, such conclusion could result in a non-cash valuation charge which would adversely affect our results of operations.

In light of these risks, uncertainties and assumptions, you should not place undue reliance on any forward-looking statements in this release. We undertake no obligation to publicly update or otherwise revise any forward-looking statements, whether as a result of new information, future events or otherwise.

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CoBiz Financial Inc.

June 30, 2011

(unaudited)

CoBiz Financial Inc.

June 30, 2011

(unaudited)

CoBiz Financial Inc.

June 30, 2011

(unaudited)

CoBiz Financial Inc.

June 30, 2011

(unaudited)

In conjunction with the Company’s strategic initiative to create a focused wealth management offering, the Company changed its operating segments in the third quarter of 2010 to reflect an internal realignment of its wealth management components.  As part of this change, the Investment Advisory and Trust segment that was previously reported has been renamed Wealth Management and a business line has been moved from Insurance into the new Wealth Management segment.  All prior period disclosures have been adjusted to conform to the new presentation.