Exhibit 99.1

		Press Release

F.N.B. Corporation Reports Increased Second Quarter 2011 Net Income

Revenue Growth for Seven Consecutive Quarters

Hermitage, PA – July 25, 2011 – F.N.B. Corporation (NYSE: FNB) today reported second quarter 2011 financial results. Net income for the second quarter of 2011 was $22.4 million, or $0.18 per diluted share, compared to $17.2 million, or $0.14 per diluted share, in the first quarter of 2011 and $17.9 million, or $0.16 per diluted share, in the second quarter of 2010.

“We are very pleased to deliver these results for our shareholders. Second quarter earnings of $0.18 per diluted share represent an increase from the prior quarter and the second quarter of 2010, with performance reflecting the continuation of several positive trends,” said Stephen J. Gurgovits, Chief Executive Officer of F.N.B. Corporation. “Revenue growth was achieved for the seventh consecutive quarter and loan growth was achieved for the eighth consecutive quarter. Additionally, our success growing transaction accounts continued and credit quality results were very good and improving from already solid levels.”

F.N.B. Corporation’s performance ratios for the second quarter of 2011 were as follows: return on average tangible equity (non-GAAP measure) was 16.77%; return on average equity was 7.69%; return on average tangible assets (non-GAAP measure) was 1.02% and return on average assets was 0.91%. A reconciliation of GAAP measures to non-GAAP measures is included in the tables that accompany this press release.

Mr. Gurgovits continued, “We are also extremely pleased to have announced the agreement to acquire Parkvale Financial Corporation on June 15, 2011. This strategically significant acquisition will solidify our leading status in the Pittsburgh MSA, vaulting our retail deposit market share to third from seventh, while providing our shareholders with a projected 6% accretion in 2012 and effectively deploying the recently raised capital. The initial stages of the integration process are underway with a targeted closing date in early January of 2012.”

Second Quarter Results

(all comparisons refer to the first quarter of 2011, except as noted)

Net Interest Income

Net interest income on a fully taxable equivalent basis totaled $80.7 million in the second quarter of 2011, increasing $1.4 million, or 7.3% annualized, primarily as a result of the 7.1% annualized growth in average earning assets and one additional day in the quarter. Average earning asset growth reflects strong loan growth and an increase in average investments due to the deployment of the $62.8 million in net proceeds from the capital raise completed on May 18, 2011. The net interest margin equaled 3.78%, with the 3 basis point narrowing in part due to increased average investments and a $30.6 million increase in average balances invested on an overnight basis.

Average loans for the second quarter totaled $6.6 billion, increasing $83.1 million or 5.1% annualized. Results for the Pennsylvania commercial portfolio in the second quarter remained strong as demonstrated by average loan growth totaling $74.8 million or 8.7% annualized. Additionally, the commercial lease portfolio continued to achieve consistent growth, contributing average growth of $6.6 million, or 31.6% annualized, through successful integration with our commercial bankers leading to positive cross-selling results. Total consumer loans increased 1.1% annualized with the average indirect auto lending portfolio growing $10.6 million, or 8.2% annualized, as a result of seasonally higher volume. In total, the other average consumer loans, which consist primarily of residential real estate-related portfolios, were essentially flat and reflect national trends for these portfolios.

Average deposits and customer repurchase agreements totaled $8.0 billion, increasing $125.1 million or 6.3% annualized. Growth in relationship-based transaction deposits and customer repurchase agreements continued as these average balances grew $149.4 million, or 10.7% annualized, as a result of new client acquisition and customers growing average balances. Partially offsetting this growth was a continued planned decline in time deposits given FNB’s overall liquidity position. As of June 30, 2011, FNB’s total customer based-funding was 95.6% of total deposits and borrowings.

“The successful loan and deposit growth results demonstrate FNB’s ability to build on the momentum our team has generated. This represents the eighth consecutive quarter of organic growth for total loans driven by nine quarters of consecutive growth in the Pennsylvania commercial portfolio,” said Mr. Gurgovits. “We believe that our team of experienced bankers, our consistency in the markets we serve, diverse product offerings and disciplined sales management approach has and will continue to produce positive results.”

Non-Interest Income

Non-interest income increased $0.8 million, or 2.9%, to $29.3 million in the second quarter of 2011. The increase reflects higher service charges reflecting seasonality and new account growth and higher securities commission revenue due to increased volume, particularly annuity related, and improved trust income resulting from revenue initiatives and more favorable market conditions. The lower insurance commission revenue reflects the seasonal decrease given contingent revenue that is normally received in the first quarter and the mortgage-related gains were lower given normal seasonality and industry trends.

Non-Interest Expense

Non-interest expense totaled $68.4 million in the second quarter of 2011, representing a $6.2 million or 8.3% improvement. When excluding the one-time merger costs of $4.1 million from the prior quarter, non-interest expense improved $2.1 million, or 3.1%, as a result of several factors, including cost savings realized from the CBI acquisition. Personnel costs improved by $1.9 million, or 4.8%, reflecting normal seasonal effects seen in the first quarter combined with acquisition-related cost savings. Additionally, FDIC insurance expense improved $0.9 million, or 31.2%, due to the new assessment methodology, while other real estate owned (OREO) costs increased $0.8 million to reflect current valuations and property maintenance costs. The second quarter of 2011 efficiency ratio improved to 60.5% compared to 63.7% in the first quarter when excluding merger costs.

Credit Quality

“We are pleased to report another quarter of very good credit quality performance, with results trending positively. The Pennsylvania and Regency portfolios, together representing 97% of the total loan portfolio, both continue to perform consistently very well and showed improvement from already solid results,” remarked Mr. Gurgovits.

Improvements seen in total past due and non-accrual loans to total loans and non-performing loans and OREO balances brought these metrics to the lowest levels since September 30, 2008. Total past due and non-accrual loans to total loans improved 27 basis points to 2.46% at June 30, 2011, driven by improvement in early stage delinquencies. The ratio of non-performing loans and OREO to total loans and OREO improved 12 basis points to 2.42% at June 30, 2011. The provision for loan losses was $8.6 million for the second quarter of 2011 and exceeded net loan charge-offs of $6.9 million. The second quarter of 2011 net charge-offs of 0.42% annualized were equal to the prior quarter’s results, representing the lowest level since September 30, 2008.

The Pennsylvania loan portfolio’s credit quality metrics for the second quarter of 2011 continue to reflect very solid performance. The Pennsylvania loan portfolio totaled $6.4 billion at June 30, 2011, representing 95% of the total loan portfolio. Total past due and non-accrual loans to total loans improved 11 basis points to 1.79% at June 30, 2011, driven by improvements in early-stage delinquencies, an important leading indicator. Charge-off performance continues to be very good, with net charge-offs for the second quarter totaling $5.3 million or 0.34% annualized of average loans. Year-to-date net charge-offs totaled 0.30% annualized of average loans compared to 0.36% for the full year of 2010. The allowance for loan losses to total loans equaled 1.30% and with the credit mark for the acquired portfolio equaled 1.71% at June 30, 2011 (non-GAAP measure).

The Florida loan portfolio credit quality results for the second quarter of 2011 performed as expected and were consistent with the prior quarter.

Capital Position

The Corporation’s higher capital levels at June 30, 2011 reflect the impact of the common stock offering completed on May 18, 2011 that generated $62.8 million in net proceeds intended to be used to support growth, including potential merger and acquisition opportunities. The Corporation’s capital ratios continue to exceed federal bank regulatory agency “well capitalized” thresholds.

At June 30, 2011, compared to March 31, 2011, the estimated total risk-based capital ratio was 13.3% compared to 12.5%, the estimated tier 1 risk-based capital ratio was 11.6% compared to 10.9% and the leverage ratio was 9.0% compared to 8.4%. At June 30, 2011 the tangible common equity to tangible assets ratio (non-GAAP measure) was 6.50% compared to 5.76% and the tangible book value per share (non-GAAP measure) was $4.73 compared to $4.36. The dividend payout ratio for the second quarter of 2011 was 69%.

Year-to-Date Results (all comparisons refer to the prior year-to-date period, except as noted)

Year-to-date results for the six months ended June 30, 2011 include the impact from the Comm Bancorp, Inc. (CBI) acquisition completed on January 1, 2011.

For the six months ended June 30, 2011, F.N.B. Corporation’s net income totaled $39.5 million, or $0.32 per diluted share, improved from $33.9 million, or $0.30 per diluted share. For the 2011 year-to-date period, return on average tangible equity (non-GAAP measure) totaled 15.40% compared to 15.05%, return on average equity was 6.94% compared to 6.51%, return on average tangible assets (non-GAAP measure) was 0.92% compared to 0.88%, and return on average assets was 0.82% compared to 0.78%.

Net interest income on a fully taxable equivalent basis totaled $159.9 million for the first six months of 2011, an increase of $16.8 million or 11.7%, reflecting 11.1% growth in average earning assets and a 2 basis point expansion of the net interest margin. The growth in earning assets reflects a combination of organic growth and the CBI acquisition. For the first six months of 2011, average loans grew 11.3%, with organic growth of 4.3% driven by strong market share gains in the Pennsylvania commercial portfolio. Average deposits and customer repurchase agreements grew 12.6%, with organic growth of 4.6% for the first six months of 2011 due to continued new customer acquisition and higher average balances.

Non-interest income totaled $57.7 million for the first half of 2011, with the decrease of $1.0 million or 1.8% due to several items benefitting the results for the first half of 2010. The first half of 2010 included $3.5 million higher recoveries on impaired loans acquired through acquisitions and a $1.6 million gain related to the successful harvesting of a mezzanine financing relationship by F.N.B. Capital Corporation. When adjusting for these two items in the prior year-to-date period, non-interest income improved $4.1 million or 7.7% due to positive results in a number of fee-based businesses. Service charges increased $1.6 million, or 5.7%, reflecting

higher volume, organic growth and the expanded customer base due to the CBI acquisition, partially offset by reduced overdraft fee revenue due to Regulation E. Fee income on a year-over-year basis also reflects a $2.1 million, or 21.6%, increase in wealth management-related revenue as a result of revenue-generating initiatives, improved market conditions and organic growth. Additionally, swap fee revenue doubled to $2.1 million in the first half of 2011 given the successful commercial loan growth results and continued low interest rate environment. Partially offsetting these increases, insurance commissions and fees declined 4.4% because of lower contingent revenues and lower commission revenues.

Non-interest expense totaled $142.9 million for the first half of 2011, an increase of $14.4 million, or 11.2%, due to adding CBI-related operating costs and $4.3 million in one-time merger costs. Expected cost savings related to the acquisition were fully phased in at the beginning of the second quarter of 2011. Additionally, the first half of 2011 includes higher OREO-related costs to reflect current valuations and property maintenance costs. On a year-to-date basis, F.N.B. Corporation’s efficiency ratio, excluding one-time merger costs, remained consistent at 62%.

Credit quality results significantly improved for the first half of 2011 compared to prior year-to-date results. Provision was $16.8 million for the first half of 2011, improving $7.4 million due to a $6.1 million lower provision in the Florida portfolio. Net charge-off results for the first six months of 2011 improved 9 basis points to 0.42% annualized of total loans and reflect continued solid performance for the Pennsylvania and Regency portfolios and improvement in the Florida portfolio. The ratio of the allowance for loan losses to total loans equaled 1.63% at June 30, 2011, compared to 1.91% at June 30, 2010, with the decline principally reflecting the impact of the accounting treatment required for loans acquired in connection with the CBI acquisition. The ratio of the allowance for loan losses plus the credit mark for the acquired portfolio to total loans plus the credit mark equaled 2.02% at June 30, 2011.

Other Highlights

On June 15, 2011, F.N.B. Corporation and Parkvale Financial Corporation (NASDAQ: PVSA) jointly announced the signing of a definitive merger agreement pursuant to which F.N.B. Corporation will acquire Parkvale Financial Corporation, the Pennsylvania-based holding company and parent of Parkvale Savings Bank in an all stock merger transaction (“merger”) valued at approximately $130 million. The transaction is expected to be completed in early January 2012, pending regulatory approval, the approval of Parkvale Financial Corporation shareholders and the satisfaction of various closing conditions.

The merger is subject to approval by federal and state regulatory agencies and is subject to a number of conditions between the parties which must be fulfilled in order to complete the merger. Therefore, the failure to obtain the requisite approvals or satisfaction of the conditions of the merger could delay or prevent the merger from being consummated.

Conference Call

F.N.B. Corporation will host its quarterly conference call to discuss second quarter of 2011 financial results on Tuesday, July 26, 2011, at 8:00 AM EDT. Participating callers may access the call by dialing (888) 490-2761 or (719) 325-2407 for international callers; the confirmation number is 4668433. The listen-only audio Webcast may be accessed through the “Shareholder and Investor Relations” section of the Corporation’s Web site at www.fnbcorporation.com.

A replay of the call will be available from 11:00 AM EDT the day of the call until midnight EDT on Wednesday, August 3, 2011. The replay is accessible by dialing (877) 870-5176 or (858) 384-5517 for international callers; the confirmation number is 4668433. The call transcript and Webcast will be available on the “Shareholder and Investor Relations” section of F.N.B. Corporation’s Web site at www.fnbcorporation.com.

About F.N.B. Corporation

F.N.B. Corporation, headquartered in Hermitage, PA, is a diversified financial services company with total assets of $9.9 billion. F.N.B. Corporation is a leading provider of commercial and retail banking, leasing, wealth management, insurance, merchant banking and consumer finance services in Pennsylvania and Ohio, where it owns and operates First National Bank of Pennsylvania, First National Trust Company, First National Investment Services Company, LLC, F.N.B. Investment Advisors, Inc., First National Insurance Agency, LLC, F.N.B. Capital Corporation, LLC, Regency Finance Company and F.N.B. Commercial Leasing. It also operates consumer finance offices in Kentucky and Tennessee.

Forward-looking Statements

This press release of F.N.B. Corporation and the reports F.N.B. Corporation files with the Securities and Exchange Commission often contain “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act, relating to present or future trends or factors affecting the banking industry and, specifically, the financial operations, markets and products of F.N.B. Corporation. Forward-looking statements are typically identified by words such as “believe”, “plan”, “expect”, “anticipate”, “intend”, “outlook”, “estimate”, “forecast”, “will”, “should”, “project”, “goal”, and other similar words and expressions. These forward-looking statements involve certain risks and uncertainties. There are a number of important factors that could cause F.N.B. Corporation’s future results to differ materially from historical performance or projected performance. These factors include, but are not limited to: (1) a significant increase in competitive pressures among financial institutions; (2) changes in the interest rate environment that may reduce net interest margins; (3) changes in prepayment speeds, loan sale volumes, charge-offs and loan loss provisions; (4) general economic conditions; (5) various monetary and fiscal policies and regulations of the U.S. Government that may adversely affect the businesses in which F.N.B. Corporation is engaged; (6) technological issues which may adversely affect F.N.B. Corporation’s financial operations or customers; (7) changes in the securities markets; (8) risk factors mentioned in the reports and registration statements F.N.B. Corporation files with the Securities and Exchange Commission (SEC) which are available on our shareholder and investor relations website at www.fnbcorporation.com and on the SEC website at www.sec.gov;

(9) housing prices; (10) job market; (11) consumer confidence and spending habits and (12) estimates of fair value of certain F.N.B. Corporation assets and liabilities. All information provided in this release and in the attachments is based on information only as of the date provided and presently available and F.N.B. Corporation undertakes no obligation to revise these forward-looking statements or to reflect events or circumstances after the date of this press release.

ADDITIONAL INFORMATION ABOUT THE MERGER

F.N.B. Corporation will file a registration statement on Form S-4 with the SEC. The registration statement will include a proxy statement/prospectus and other relevant documents to be filed with the SEC in connection with the merger.

SHAREHOLDERS OF PARKVALE FINANCIAL CORPORATION ARE ADVISED TO READ THE PROXY STATEMENT/PROSPECTUS WHEN IT BECOMES AVAILABLE AND ANY OTHER RELEVANT DOCUMENTS FILED WITH THE SEC, AS WELL AS ANY AMENDMENTS OR SUPPLEMENTS TO THOSE DOCUMENTS, BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION.

The proxy statement/prospectus and other relevant materials (when they become available), and any other documents F.N.B. Corporation has filed with the SEC, may be obtained free of charge at the SEC’s website at www.sec.gov. In addition, investors and security holders may obtain free copies of the documents F.N.B. Corporation has filed with the SEC by contacting James Orie, F.N.B. Corporation, One F.N.B. Boulevard, Hermitage, PA 16148, telephone: (724) 983-3317 or for Parkvale Financial Corporation by contacting Gilbert A. Riazzi, Chief Financial Officer, 4220 William Penn Highway, Monroeville, PA 15146, telephone: (412) 373-4804.

Parkvale Financial Corporation and its directors, executive officers and other members of its management and employees may be deemed to be participants in the solicitation of proxies from its shareholders in connection with the proposed merger. Information concerning such participants’ ownership of Parkvale Financial Corporation common stock will be set forth in the proxy statement/prospectus relating to the merger when it becomes available. This communication does not constitute an offer of any securities for sale.

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Analyst/Institutional Investor Contact:

Cynthia Christopher 724-983-3429

724-815-3926 (cell)

christoc@fnb-corp.com

Media Contact:

Jennifer Reel 724-983-4856

724-699-6389 (cell)

reel@fnb-corp.com

DATA SHEETS FOLLOW

F.N.B. CORPORATION

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F.N.B. CORPORATION

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F.N.B. CORPORATION

(Unaudited)

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F.N.B. CORPORATION

(Unaudited)

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F.N.B. CORPORATION

(Unaudited)

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