Exhibit 99.1

NEWS RELEASE

FOR IMMEDIATE RELEASE

Pacific Continental Corporation Reports First Quarter 2015 Results

Organic growth and successful acquisition drive first quarter results.

EUGENE, Ore., April 29, 2015 – Pacific Continental Corporation (Nasdaq: PCBK), the holding company of Pacific Continental Bank, today reported financial results for the first quarter 2015.

Recent highlights:

Capital Pacific Bank acquisition

The Capital Pacific Bank acquisition, announced on November 19, 2014, was successfully closed on March 6, 2015. System integration was also successfully completed during the weekend of March 20, 2015. A summary of the assets and liabilities acquired through the transaction is provided in the financial tables accompanying this press release.

Net income

Net income for first quarter 2015 was $2.8 million or $0.15 per diluted share compared to net income of $3.8 million or $0.21 per diluted share in first quarter 2014. Merger expense related to the acquisition of Capital Pacific Bank totaled $1.8 million in the first quarter and reduced net income by approximately $1.2 million or $0.07 per share.

“Our first quarter results, combined with the completion of the Capital Pacific Bank acquisition in Portland, Oregon and successful integration of systems demonstrated our continued progress toward achievement of our strategic initiatives,” said Roger Busse, chief executive officer. “Further the Capital Pacific transaction will provide meaningful scale to our Portland operations, as well as add to our financial performance during the year and be accretive to our shareholders.”

Core deposits

Period-end Company-defined core deposits at March 31, 2015, were $1.42 billion and included $223.0 million of deposits acquired in the Capital Pacific transaction. Organically, outstanding core deposits were up $83.5 million or 7.52% during the first quarter 2015. Average core deposits, which removes daily volatility in balances, for the first quarter 2015 were $1.20 billion compared to $1.08 billion and $992.5 million for fourth quarter 2015 and first quarter 2014, respectively. Removing the $54.4 million in outstanding average Capital Pacific deposits, organic average core deposits in first quarter 2015 were up $63.2 million or 5.84% over the prior quarter. At period-end March 31, 2015, noninterest-bearing demand deposits totaled $503.7 million and represented 35.54% of core deposits.

“Our bankers continued to effectively execute our business strategies and were successful in developing new relationships,” said Casey Hogan, chief operating officer. “Our pipelines continue to be strong, and we anticipate loan and deposit growth to continue.”

Loans

Outstanding gross loans at March 31, 2015, were $1.26 billion and included $199.9 million of loans (net of fair value marks) acquired in the Capital Pacific transaction. Organic loan growth during the first quarter 2015 of $10.00 million was primarily attributable to increased commercial and industrial lending and local real estate lending. In addition to organic loan growth, during the first quarter, the Company originated loans with unfunded commitments at March 31, 2015 totaling $52.9 million, which were primarily centered in construction. This is up from the $21.1 million in originated unfunded loan commitments in the first quarter 2014. Loans to dental professionals were up $4.6 million from the previous quarter. The Company continued to see expansion of its national dental lending, but the more seasoned local dental portfolio remained relatively unchanged as new production was offset by normal principal payments. At March 31, 2015, loans to dental practitioners totaled $311.0 million and represented 24.76% of the loan portfolio compared to 29.29% at December 31, 2014. The reduction in the concentration of dental loans during the first quarter 2015 was the result of loans added to the portfolio from the acquisition of Capital Pacific Bank.

Credit quality and statistics

For the eighth consecutive quarter, the Company made no provision for loan losses, reflecting the credit quality of the loan portfolio. With the acquisition of the Capital Pacific loan portfolio, the allowance for loan losses as a percentage of outstanding loans at March 31, 2015, declined to 1.25% compared to 1.50% at December 31, 2014. This was a result of the Capital Pacific acquired loans included at their fair value, net of any credit risk adjustments. The allowance for loan losses as a percentage of nonperforming loans net of guarantees remained very strong at 569.74%. During the first quarter 2015, the Company recorded net loan recoveries totaling $87 thousand.

At March 31, 2015, nonperforming assets, net of government guarantees, totaled $16.8 million, or 0.94% of total assets, compared to $15.4 million or 1.02% of total assets at December 31, 2014. Nonperforming assets at March 31, 2015 were comprised of $2.6 million of nonperforming loans, net of government guarantees, and $14.2 million in other real estate owned. Loans past-due 30-89 days were 0.35% of total loans at March 31, 2015, compared to 0.15% of total loans at December 31, 2014.

Net interest margin

The first quarter 2015 net interest margin averaged 4.27%, an increase of 3 basis points over the fourth quarter 2014 net interest margin, and a 5 basis point decline from the first quarter 2014 net interest margin. The improvement in the linked-quarter net interest margin was primarily due to accretion of loan fair value marks, which added 11 basis points to the core margin. During the first quarter 2015, the net accretion of loan fair value marks was $387 thousand of which $138 thousand was related to the 2013 acquisition of Century Bank and $249 thousand related to the first quarter 2015 acquisition of Capital Pacific Bank.

Noninterest income and expense

First quarter 2015 noninterest income was $1.3 million, down $42 thousand from fourth quarter 2014, and down $47 thousand from first quarter 2014. First quarter 2015 noninterest income included $53 thousand of gains on the sale of securities and a $23 thousand increase in service charge income, which was offset by a decline in bankcard income when compared to the prior quarter.

Noninterest expense in first quarter 2015 was up $2.2 million over fourth quarter 2014, primarily due to the $1.8 million of merger expense recorded during the current quarter. Increased personnel expense of $705 thousand in first quarter 2015 over fourth quarter 2014 accounted for the majority of the remaining linked-quarter expense increase. This was primarily due to the salary and benefit costs of former Capital Pacific employees who will continue on with Pacific Continental.

Capital levels

The Company’s consolidated capital ratios continued to be above the minimum for the FDIC’s minimum “well-capitalized” designation. At March 31, 2015, the Company’s Tier 1 leverage ratio, Common Equity Tier 1 risk-based capital ratio, Tier 1 risk-based capital ratio, and Total risk-based capital ratios were 11.31%, 11.41%, 11.97%, and 13.08%, respectively. This is after the application of the Basel III regulatory capital framework. The FDIC’s minimum “well-capitalized” designation ratios for these metrics were 5.00%, 6.50%, 8.00% and 10.00%, respectively.

Non-GAAP Financial Measures

In addition to results presented in accordance with generally accepted accounting principles (GAAP), this press release contains certain non-GAAP financial measures. The Company believes that such non-GAAP financial measures provide investors with information useful in understanding the Company’s financial performance; however, readers of this release are urged to review these non-GAAP financial measures in conjunction with the GAAP results as reported.

Financial measures such as tangible shareholders’ equity are considered non-GAAP measures. Management believes including non-GAAP measures along with GAAP measures provides investors with a broader understanding of capital adequacy. Tangible shareholders’ equity is calculated as total shareholders’ equity less goodwill and core deposit intangible assets. Additionally, tangible assets are calculated as total assets less goodwill and core deposit intangible assets.

The following table presents a reconciliation of ending shareholders’ equity (GAAP) to ending tangible shareholders’ equity (non-GAAP), and total assets (GAAP) to total assets (non-GAAP)

Conference call and audio webcast

Management will conduct a live conference call and audio webcast for interested parties relating to the Company’s results for the first quarter 2015 on Thursday, April 30, 2015, at 11:00 a.m. Pacific / 2:00 p.m. Eastern. To listen to the conference call, interested parties should call (855) 215-7498 Passcode: 1554389. Following the formal remarks, a question and answer session will be open to all interested parties. The webcast will be available via Pacific Continental’s website www.therightbank.com. To listen to the live audio webcast, click on the webcast presentation link on the Company’s home page a few minutes before the presentation is scheduled to begin. An audio webcast replay is typically available within twenty-four hours following the live webcast and will be archived for one year on the Pacific Continental website. Any questions regarding the conference call presentation or webcast should be directed to Shannon Coffin, executive administrative assistant, at 541-686-8685.

About Pacific Continental Bank

Pacific Continental Bank, the operating subsidiary of Pacific Continental Corporation, delivers highly personalized services through fifteen banking offices in Oregon and Washington. The Bank also operates loan production offices in Tacoma, Washington and Denver, Colorado. Pacific Continental, with $1.8 billion in assets, has established one of the most unique and attractive metropolitan branch networks in the Pacific Northwest with offices in three of the region’s largest markets including Seattle, Portland and Eugene. Pacific Continental targets the banking needs of community-based businesses, health care professionals, professional service providers and nonprofit organizations.

Since its founding in 1972, Pacific Continental Bank has been honored with numerous awards and recognitions from highly regarded third-party organizations including The Seattle Times, the Portland Business Journal, the Seattle Business magazine and Oregon Business magazine. A complete list of the company’s awards and recognitions – as well as supplementary information about Pacific Continental Bank – can be found online at www.therightbank.com. Pacific Continental Corporation’s shares are listed on the Nasdaq Global Select Market under the symbol “PCBK” and are a component of the Russell 2000 Index.

Forward-Looking Statement Safe Harbor

This release contains “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995 (“PSLRA”). These statements can be identified by the fact that they do not relate strictly to historical or current facts. Forward-looking statements often use words such as “anticipates,” “targets,” “expects,” “estimates,” “intends,” “plans,” “goals,” “believes” and other similar expressions or future or conditional verbs such as “will,” “should,” “would” and “could.” The forward-looking statements made represent Pacific Continental’s current estimates, projections, expectations, plans or forecasts of its future results and revenues, including but not limited to statements about performance, loan growth, capital position,

liquidity, credit quality, credit quality trends, competition and economic conditions generally and the impact and effects of recent acquisitions. These statements are not guarantees of future results or performance and involve certain risks, uncertainties and assumptions and that are difficult to predict and are often beyond Pacific Continental’s control. Actual outcomes and results may differ materially from those expressed in, or implied by, any of these forward-looking statements. You should not place undue reliance on any forward-looking statement and should consider all of the following uncertainties and risks, as well as those more fully discussed under “Risk Factors”, “Business”, and “Management’s Discussion and Analysis of Financial Condition and Results of Operations” in Pacific Continental’s most recent Annual Report on Form 10-K, Quarterly Report on Form 10-Q, and in any of Pacific Continental’s subsequent SEC filings, including the high concentration of loans of the Company’s banking subsidiary in commercial and residential real estate lending and our concentration in loans to dental professionals; adverse economic trends in the United States and the markets we serve affecting the Bank’s borrower base; continued erosion or sustained low levels of consumer confidence; changes in the Federal Reserve’s monetary policies and the regulatory environment and increases in associated costs, particularly ongoing compliance expenses and resource allocation needs; vendor quality and efficiency; the Company’s ability to control risks associated with rapidly changing technology both from an internal perspective as well as for external providers; operational systems or infrastructure failures; increased competition; fluctuating interest rates; a tightening of available credit; the potential adverse impact of legal or regulatory proceedings; and risks related to acquisitions, including integration, retention of key personnel and business, anticipated cost savings and results and performance of the acquired company or the combined entity. Pacific Continental Corporation undertakes no obligation to publicly revise or update any forward-looking statement to reflect the impact of events or circumstances that arise after the date of this release. This statement is included for the express purpose of invoking PSLRA’s safe harbor provisions.

PACIFIC CONTINENTAL CORPORATION

Consolidated Income Statements

(In thousands, except share and per share amounts)

(Unaudited)

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Consolidated Balance Sheets

(In thousands, except share amounts)

(Unaudited)

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Loans by Type

(In thousands)

(Unaudited)

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Selected Other Financial Information and Ratios

(In thousands)

(Unaudited)

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Nonperforming Assets, Asset Quality Ratios and Allowance for Loan Losses

(Dollars in thousands, except per share data)

(Unaudited)

PACIFIC CONTINENTAL CORPORATION

Consolidated Financial Highlights

(Dollars in thousands, except per share data)

(Unaudited)