Exhibit 99.1 Western Alliance Reports Net Income of $8.4 Million or $0.33 Per Share for the First Quarter 2006 LAS VEGAS--(BUSINESS WIRE)--April 18, 2006--Western Alliance Bancorporation (NYSE:WAL) announced today its financial results for the first quarter 2006. First Quarter 2006 Highlights: -- Net income of $8.4 million, up 58.6% from $5.3 million in the first quarter 2005 -- Diluted earnings per share of $0.33, compared to $0.27 in the first quarter 2005 -- Net revenue (sum of net interest income and non-interest income) of $32.9 million, up 33.7% from $24.6 million in the first quarter 2005 -- Loans of $2.35 billion at March 31, 2006, up 76.8% or $1.02 billion from one year ago, including organic growth of $612 million -- Deposits of $2.96 billion at March 31, 2006, up 46.5% or $939 million from one year ago, including organic growth of $517 million -- Completed merger with Intermountain First Bancorporation, and thereby acquired Nevada First Bank, on March 31, 2006 Acquisition Activity On March 31, 2006, we completed our merger with Intermountain First Bancorp, and thereby acquired Nevada First Bank. Total assets, loans and deposits acquired in this merger were $573 million, $408 million and $422 million, respectively. We also added a total of four full-service branches in Las Vegas, Henderson and Reno, Nev., through this merger. No income from Intermountain First Bancorp's operations was recognized by Western Alliance in the first quarter 2006. Financial Performance Western Alliance Bancorporation reported net income of $8.4 million for the first quarter 2006, up 58.6 percent from $5.3 million for the first quarter 2005. Diluted earnings per share were $0.33, compared to $0.27 for the first quarter 2005. Loans grew $561 million, including organic growth of $153 million, to $2.35 billion at March 31, 2006, from Dec. 31, 2005, and $1.02 billion, including organic growth of $615 million, from March 31, 2005. Deposits grew $564 million, including organic growth of $142 million, to $2.96 billion from Dec. 31, 2005, and $939 million, including organic growth of $517 million, from March 31, 2005. "I'm delighted that we have started 2006 with such strong performance," said Robert Sarver, chairman and chief executive officer of Western Alliance. "We achieved organic revenue growth of 34% during the quarter and surpassed our loan and deposit growth objectives of $100 million. Four experienced relationship managers joined our winning team. Our asset quality remains exceptional with virtually zero non-performing assets and net recoveries year to date." Sarver continued, "During the quarter, we completed our merger with Intermountain First Bancorp and announced the team to lead our new bank in the Bay Area. We look forward to closing our merger with Bank of Nevada in the near future and combining our three Nevada banks into a statewide franchise. We started the year with 16 offices in four metro areas and I expect by year's end we will have doubled our branches and expanded our presence into two more markets." Income Statement Net interest income increased 33.5 percent to $29.4 million in the first quarter 2006 from $22.0 million in the first quarter 2005. The interest margin in the first quarter 2006 was 4.53 percent, compared to 4.43 percent in the fourth quarter 2005. Interest income for the first quarter 2006 includes $0.5 million gross up in costs related to title company accounts, which has also been added to non-interest expense. The margin was 4.35 percent in the first quarter 2005. The provision for loan losses was $0.5 million for the first quarter 2006 compared to $2.0 million for the fourth quarter 2005 and $1.7 million for the first quarter 2005. Non-accrual loans were $0.03 million or less than 0.01 percent of total loans at March 31, 2006, compared to 0.04 percent of total loans at March 31, 2005. Net loan recoveries were $0.08 million for the first quarter 2006. Non-interest income was $3.5 million for the first quarter 2006, up 35.3 percent from $2.6 million for the same period in 2005. For the fourth quarter 2005, non-interest income was $3.4 million. Net revenue was $32.9 million for the first quarter 2006, up 33.7 percent from $24.6 million for the first quarter 2005. For the fourth quarter 2005, net revenue was $32.0 million. Non-interest expense was $19.5 million for the first quarter 2006, up 33.9 percent from $14.6 million for the same period in 2005. For the fourth quarter 2005, non-interest expense was $17.1 million. We had 660 full-time equivalent employees on March 31, 2006, compared to 537 on Dec. 31, 2005, and 476 on March 31, 2005. We had 21 full-service banking offices on March 31, 2006, compared to 16 at Dec. 31, 2005, and 13 on March 31, 2005. Net income increased 58.6 percent to $8.4 million for the first quarter 2006 compared to $5.3 million for the same period last year. Diluted earnings per share were $0.33 compared with $0.27 for the first quarter 2005. Average diluted shares increased 28.6 percent to 25.4 million for the first quarter 2006 compared to 20.0 million for the first quarter 2005. Balance Sheet Loans totaled $2.35 billion at March 31, 2006, an increase of 31.3 percent from Dec. 31, 2005, and 76.8 percent from $1.33 billion at March 31, 2005. Total loans acquired in the Intermountain merger were $408 million. Organic loan growth for the quarter ended March 31, 2006, totaled $153 million. At March 31, 2006, the allowance for loan losses was 1.18 percent of gross loans, unchanged from year end. Deposits totaled $2.96 billion at March 31, 2006, an increase of 23.5 percent or $564 million from Dec. 31, 2005, and 46.5 percent from $2.02 billion at March 31, 2005. Total deposits acquired in the Intermountain merger were $422 million. Organic deposit growth for the quarter ended March 31, 2006, totaled $142 million. Non-interest bearing deposits comprised 40.1 percent of total deposits at March 31, 2006. At March 31, 2006, 31.9 percent of non-interest bearing deposits were from title companies, compared to 30.5 percent at Dec. 31, 2005. At March 31, 2006, the company's loan to deposit ratio was 79.6 percent compared with 66.0 percent one year earlier. Borrowings and repurchase agreements totaled $199 million at March 31, 2006, an increase of 39.2 percent from $143 million at March 31, 2005. Fed funds sold totaled $222 million at March 31, 2006, up 102.4% from $110 million one year earlier. Stockholders' equity increased $219 million from March 31, 2005, to $356 million at March 31, 2006, primarily due to our initial public offering in June 2005 of 4.2 million shares and the issuance of 3.3 million shares in connection with the Intermountain acquisition on March 31, 2006. At March 31, 2006, tangible common equity was 7.6 percent of tangible assets and total risk-based capital was 12.4 percent of risk-weighted assets. Total assets increased 53.1 percent to $3.58 billion at March 31, 2006, from $2.34 billion at March 31, 2005. Of this growth, $668 million was organic, and $573 million was due to the Intermountain acquisition on March 31, 2006. Operating Unit Highlights BankWest of Nevada reported loan growth of $68 million during the first quarter 2006 and $276 million during the last 12 months to $1.15 billion at March 31, 2006. Deposits increased $92 million and $278 million to $1.70 billion during the same periods, respectively. On March 31, 2006, Nevada First Bank loans of $408 million and deposits of $422 million were acquired from the merger with Intermountain First Bancorp. Net income at BankWest of Nevada was $7.0 million during the first quarter 2006 compared with $5.3 million during the first quarter 2005. Alliance Bank of Arizona reported loan growth of $42 million during the first quarter 2006 and $183 million during the last 12 months to $447 million. Deposits increased $52 million and $168 million to $510 million during the same periods, respectively. Net income at Alliance Bank of Arizona was $0.8 million during the first quarter 2006 compared with $0.5 million during the first quarter 2005. Torrey Pines Bank reported loan growth of $43 million during the first quarter 2006 and $156 million during the last 12 months to $348 million. Deposits decreased $7 million and increased $64 million to $328 million during the same periods, respectively. Net income at Torrey Pines Bank was $1.1 million during the first quarter 2006 compared with $0.2 million during the first quarter 2005. Assets under management at Miller/Russell and Associates were $1.19 billion at March 31, 2006, up 39.9 percent from $849 million at March 31, 2005. At Premier Trust, assets under management increased 52.1 percent from $94 million to $143 million from March 31, 2005, to March 31, 2006. Total trust assets increased 41.2 percent from $221 million to $312 million for the same periods, respectively. Attached to this press release is summarized financial information for the quarter ended March 31, 2006. Conference Call Western Alliance Bancorporation will host a conference call to discuss its first quarter 2006 financial results at noon ET on Wednesday, April 19, 2006. Participants may access the call by dialing 866-239-0750, using the pass code 2158461. The call will be recorded and made available for replay after 5 p.m. ET April 19 until 11 p.m. ET April 26 by dialing 888-203-1112 using the pass code 2158461. Cautionary Note Regarding Forward-Looking Statements This release contains forward-looking statements that relate to expectations, beliefs, projections, future plans and strategies, anticipated events or trends and similar expressions concerning matters that are not historical facts. The forward-looking statements contained herein reflect our current views about future events and financial performance and are subject to risks, uncertainties, assumptions and changes in circumstances that may cause our actual results to differ significantly from historical results and those expressed in any forward-looking statement. Some factors that could cause actual results to differ materially from historical or expected results include: factors listed in the initial public offering registration statement as filed with the Securities and Exchange Commission; changes in general economic conditions, either nationally or locally in the areas in which we conduct or will conduct our business; inflation, interest rate, market and monetary fluctuations; increases in competitive pressures among financial institutions and businesses offering similar products and services; higher defaults on our loan portfolio than we expect; changes in management's estimate of the adequacy of the allowance for loan losses; legislative or regulatory changes or changes in accounting principles, policies or guidelines; management's estimates and projections of interest rates and interest rate policy; the execution of our business plan; and other factors affecting the financial services industry generally or the banking industry in particular. We do not intend and disclaim any duty or obligation to update or revise any industry information or forward-looking statements set forth in this press release to reflect new information, future events or otherwise. About Western Alliance Bancorporation Western Alliance Bancorporation is the parent company of BankWest of Nevada, Nevada First Bank, Alliance Bank of Arizona, Torrey Pines Bank, Miller/Russell & Associates and Premier Trust. These dynamic companies provide a broad array of banking, leasing, trust, investment and mortgage services to clients in Nevada, Arizona and California. Staffed with experienced financial professionals, these organizations deliver a broader product array and larger credit capacity than community banks, yet are empowered to be more responsive to customers' needs than larger institutions. Additional investor information can be accessed on the Investor Relations page of the company's Web site, www.westernalliancebancorp.com. Western Alliance Bancorporation and Subsidiaries Summary Consolidated Financial Data Unaudited At or for the three months ended Mar. 31, 2006 2005 Change % - ---------------------------------------------------------------------- Selected Balance Sheet Data: ($ in millions) Total assets $3,579.8 $2,338.8 53.1 % Gross loans, including net deferred fees 2,354.2 1,331.8 76.8 Securities 624.9 729.1 -14.3 Federal funds sold and other 221.6 109.5 102.4 Deposits 2,957.4 2,018.7 46.5 Borrowings 108.6 113.7 -4.5 Junior subordinated debt 41.2 30.9 33.3 Stockholders' equity 356.1 137.1 159.7 Selected Income Statement Data: ($ in thousands) Interest income $42,196 $28,423 48.5 % Interest expense 12,802 6,409 99.8 --------- --------- Net interest income 29,394 22,014 33.5 Provision for loan losses 542 1,747 -69.0 --------- --------- Net interest income after provision for loan losses 28,852 20,267 42.4 Non-interest income 3,497 2,584 35.3 Non-interest expense 19,520 14,573 33.9 --------- --------- Income before income taxes 12,829 8,278 55.0 Income tax expense 4,391 2,957 48.5 --------- --------- Net Income $8,438 $5,321 58.6 ========= ========= Common Share Data: Net income per share: Basic $0.37 $0.29 27.6 Diluted 0.33 0.27 22.2 Book value per share 13.51 7.46 81.1 Tangible book value per share 10.03 7.17 39.9 Average shares outstanding (in thousands): Basic 22,999 18,294 25.7 Diluted 25,355 20,021 26.6 Common shares outstanding 26,365 18,372 43.5 Western Alliance Bancorporation and Subsidiaries Summary Consolidated Financial Data (continued) At or for the three months ended Mar. 31, 2006 2005 Change % - ---------------------------------------------------------------------- Selected Performance Ratios: Return on average assets (1) 1.19 % 0.98 % 21.4 % Return on average stockholders' equity (1) 13.75 15.27 -10.0 Net interest margin (1) 4.53 4.36 3.9 Net interest spread 3.50 3.65 -4.1 Efficiency ratio 59.35 59.24 0.2 Loan to deposit ratio 79.60 65.97 20.7 Capital Ratios: Tangible Common Equity 7.6 % 5.6 % 35.7 Leverage ratio 11.5 7.7 49.4 Tier 1 Risk Based Capital 11.4 10.4 9.6 Total Risk Based Capital 12.4 11.4 8.8 Asset Quality Ratios: Net charge-offs to average loans outstanding (1) (0.02)% (0.03)% -33.3 Non-accrual loans to gross loans 0.00 0.04 -100.0 Non-accrual loans to total assets 0.00 0.02 -100.0 Loans past due 90 days and still accruing to total loans 0.00 0.00 0.0 Allowance for loan losses to gross loans 1.18 1.29 -8.5 Allowance for loan losses to non-accrual greater greater loan than 10 than 10 times times =================================================== (1) Annualized for the three-month periods ended March 31, 2006 and 2005. Western Alliance Bancorporation and Subsidiaries Condensed Consolidated Statements of Income Unaudited Three Months Ended March 31, (in thousands, except per share data) 2006 2005 - ---------------------------------------------------------------------- Interest income on: Loans, including fees $34,754 $20,334 Securities 7,159 7,876 Federal funds sold and other 283 213 -------------------- Total interest income 42,196 28,423 -------------------- Interest expense on: Deposits 9,924 4,519 Borrowings 2,311 1,424 Junior subordinated debt 567 466 -------------------- Total interest expense 12,802 6,409 -------------------- Net interest income 29,394 22,014 Provision for loan losses 542 1,747 Net interest income after provision for -------------------- loan losses 28,852 20,267 -------------------- Other income: Trust and investment advisory services 1,576 1,313 Service charges 669 555 Bank owned life insurance 612 289 Other 640 427 -------------------- 3,497 2,584 -------------------- Other expense: Compensation 11,577 8,493 Occupancy 2,450 2,207 Customer service 1,249 708 Other 4,244 3,165 -------------------- 19,520 14,573 -------------------- Income before income taxes 12,829 8,278 Income tax expense 4,391 2,957 -------------------- Net income $8,438 $5,321 ==================== Earnings per share: Basic $0.37 $0.29 ==================== Diluted $0.33 $0.27 ==================== Western Alliance Bancorporation and Subsidiaries Five Quarter Condensed Consolidated Statements of Income Unaudited Quarter ended ($ in thousands, except Mar. 31, Dec. 31, Sep. 30, Jun. 30, Mar. 31, per share data) 2006 2005 2005 2005 2005 - ---------------------------------- -------- -------- -------- -------- Interest income on: Loans, including fees $34,754 $31,215 $27,343 $23,589 $20,334 Securities 7,159 7,285 7,488 7,385 7,876 Federal funds sold and other 283 475 869 838 213 -------- -------- -------- -------- -------- Total interest income 42,196 38,975 35,700 31,812 28,423 -------- -------- -------- -------- -------- Interest expense on: Deposits 9,924 8,422 6,767 5,838 4,519 Borrowings 2,311 1,345 1,056 1,084 1,424 Junior subordinated debt 567 593 546 508 466 Total interest -------- -------- -------- -------- -------- expense 12,802 10,360 8,369 7,430 6,409 -------- -------- -------- -------- -------- Net interest income 29,394 28,615 27,331 24,382 22,014 Provision for loan losses 542 1,962 1,283 1,187 1,747 Net interest income after provision for -------- -------- -------- -------- -------- loan losses 28,852 26,653 26,048 23,195 20,267 -------- -------- -------- -------- -------- Other income: Trust and other fees 1,576 1,591 1,448 1,347 1,313 Service charges 669 637 662 641 555 Bank owned life ins. 612 619 463 293 289 Other 640 556 660 637 427 -------- -------- -------- -------- -------- 3,497 3,403 3,233 2,918 2,584 -------- -------- -------- -------- -------- Other expense: Compensation 11,577 9,767 9,541 9,015 8,493 Occupancy 2,450 2,619 2,581 2,412 2,207 Customer service 1,249 790 1,257 965 708 Other 4,244 3,874 3,895 3,575 3,165 -------- -------- -------- -------- -------- 19,520 17,050 17,274 15,967 14,573 -------- -------- -------- -------- -------- Income before income taxes 12,829 13,006 12,007 10,146 8,278 Income tax expense 4,391 4,564 4,258 3,593 2,957 -------- -------- -------- -------- -------- Net income $8,438 $8,442 $7,749 $6,553 $5,321 ======== ======== ======== ======== ======== Earnings per share: Basic $0.37 $0.37 $0.34 $0.35 $0.29 ======== ======== ======== ======== ======== Diluted $0.33 $0.34 $0.31 $0.32 $0.27 ======== ======== ======== ======== ======== Western Alliance Bancorporation and Subsidiaries Five Quarter Condensed Consolidated Balance Sheets Unaudited Mar. 31, Dec. 31, Sep. 30, Jun. 30, Mar. 31, ($ in millions) 2006 2005 2005 2005 2005 - ---------------------------------------------------------------------- Assets Cash and due from banks $141.7 $111.2 $90.6 $93.2 $87.0 Federal funds sold 221.6 63.2 204.0 212.2 109.5 Cash and cash ------------------------------------------------ equivalents 363.3 174.4 294.6 305.4 196.5 ------------------------------------------------ Securities 624.9 748.5 713.1 695.4 729.1 Gross loans, including net deferred loan fees: Construction 553.3 432.7 397.0 381.4 362.9 Real estate: Commercial 936.0 727.2 655.0 598.3 544.1 Residential 342.1 272.9 239.5 168.6 140.2 Commercial 503.3 342.5 307.0 286.3 266.7 Consumer 23.3 20.4 21.1 20.6 20.0 Net deferred fees (3.8) (2.3) (2.1) (1.9) (2.1) ------------------------------------------------ 2,354.2 1,793.4 1,617.5 1,453.3 1,331.8 Less: Allowance for loan losses (27.7) (21.2) (19.3) (18.1) (17.1) ------------------------------------------------ Loans, net 2,326.5 1,772.2 1,598.2 1,435.2 1,314.7 ------------------------------------------------ Initial public offering proceeds receivable - - - 77.1 - Premises and equipment, net 64.5 58.4 36.9 35.8 29.2 Bank owned life insurance 52.4 51.8 51.2 26.7 26.5 Goodwill and other intangibles 91.7 5.2 5.2 5.3 5.3 Other assets 56.5 46.8 45.8 40.4 37.5 ------------------------------------------------ Total assets $3,579.8 $2,857.3 $2,745.0 $2,621.3 $2,338.8 ================================================ Western Alliance Bancorporation and Subsidiaries Five Quarter Condensed Consolidated Balance Sheets (continued) Mar. 31, Dec. 31, Sep. 30, Jun. 30, Mar. 31, ($ in millions) 2006 2005 2005 2005 2005 - ---------------------------------------------------------------------- Liabilities and Stockholders' Equity Liabilities Non-interest bearing demand deposits $1,186.6 $980.0 $1,048.2 $964.3 $864.1 Interest bearing deposits: Demand 240.6 122.3 107.7 110.5 103.0 Savings and money market 1,086.3 949.6 893.7 820.0 783.5 Time, $100 and over 380.9 316.2 275.3 273.6 249.0 Other time 63.0 25.8 22.6 21.1 19.1 ------------------------------------------------ 2,957.4 2,393.9 2,347.5 2,189.5 2,018.7 Customer repurchase agreements 90.4 78.2 55.8 55.3 29.1 Borrowings 108.6 80.5 63.7 113.7 113.7 Junior subordinated debt 41.2 30.9 30.9 30.9 30.9 Accrued interest payable and other liabilities 26.1 29.6 8.9 9.4 9.3 ------------------------------------------------ Total liabilities 3,223.7 2,613.1 2,506.8 2,398.8 2,201.7 ------------------------------------------------ Stockholders' Equity Common stock and additional paid-in capital 271.7 167.6 167.6 157.8 81.0 Retained earnings 94.7 86.3 77.7 70.1 63.6 Accumulated other comprehensive loss (10.3) (9.7) (7.1) (5.4) (7.5) ------------------------------------------------ Total stockholders' equity 356.1 244.2 238.2 222.5 137.1 ------------------------------------------------ Total liabilities and stockholders' equity $3,579.8 $2,857.3 $2,745.0 $2,621.3 $2,338.8 ================================================ Western Alliance Bancorporation and Subsidiaries Condensed Consolidated Statement of Changes in Stockholders' Equity Unaudited 3 Months ended Mar. 31, Shares 2006 2005 (in thousands) Outstanding Amount - -------------------------------------------------- ------------------- Balance, beginning of period 22,810 $244,223 $133,571 Net income - 8,438 5,321 Other comprehensive income (loss), net of tax: Net unrealized holding losses on securities available for sale - (559) (2,377) Common stock issued in acquisition 3,341 102,801 - Stock options exercised 66 548 266 Stock warrants exercised 34 260 286 Restricted stock granted, net 114 - - Stock-based compensation expense - 342 15 ----------- --------- --------- Balance, end of period 26,365 $356,053 $137,082 =========== ========= ========= Western Alliance Bancorporation and Subsidiaries Changes in the Allowance For Loan Losses Unaudited Quarter Ended Mar. 31, Dec. 31, Sep. 30, Jun. 30, Mar. 31, (in thousands) 2006 2005 2005 2005 2005 - ---------------------------------- -------- -------- -------- -------- Balance, beginning of period $21,192 $19,288 $18,118 $17,114 $15,271 Acquisition of Intermountain 5,877 - - - - Provisions charged operating expenses 542 1,962 1,283 1,187 1,747 Recoveries of loans previously charged-off: Construction and land development - - - - - Commercial real estate - - - - - Residential real estate 5 - - - 3 Commercial and industrial 128 8 7 19 130 Consumer 30 16 6 1 5 -------- -------- -------- -------- -------- Total recoveries 163 24 13 20 138 Loans charged-off: Construction and land development - - - - - Commercial real estate - - - - - Residential real estate - - - - - Commercial and industrial 83 13 - 107 18 Consumer 2 69 126 96 24 -------- -------- -------- -------- -------- Total charged- off 85 82 126 203 42 Net charge-offs (recoveries) (78) 58 113 183 (96) -------- -------- -------- -------- -------- Balance, end of period $27,689 $21,192 $19,288 $18,118 $17,114 ======== ======== ======== ======== ======== Net charge-offs (recoveries) (annualized) to average loans outstanding -0.02% 0.01% 0.03% 0.05% -0.03% Allowance for loan losses to gross loans 1.18 1.18 1.19 1.25 1.29 Non-accrual loans $29 $107 $175 $503 $575 Loans past due 90 days, still accruing - 34 2,503 9 57 Western Alliance Bancorporation and Subsidiaries Average Balances, Yields and Rates Paid Three Months Ended March 31, 2006 2005 - ---------------------------------------------------------------------- Unaudited Average Interest Average Average Interest Average Balance Yield/ Balance Yield/ Cost Cost Earning Assets in in in in millions thousands millions thousands Securities $671.8 $6,990 4.34% $770.6 $7,754 4.11% Federal funds sold 27.9 283 4.11% 35.5 213 2.43% Loans 1,935.4 34,754 7.28% 1,233.9 20,334 6.68% FHLB stock 14.4 169 4.76% 13.6 122 3.64% ------------------------ ------------------------- Total earnings assets 2,649.5 42,196 6.49% 2,053.6 28,423 5.62% Non-earning Assets Cash and due from banks 83.0 71.3 Allowance for loan losses (21.8) (15.6) Bank-owned life insurance 52.0 26.3 Other assets 103.5 58.8 ---------- ---------- Total assets $2,866.2 $2,194.4 ========== ========== Interest Bearing Liabilities Sources of Funds Interest-bearing deposits: Interest checking $120.9 216 0.72% $99.4 97 0.40% Savings and money market 976.8 6,513 2.70% 714.2 3,015 1.71% Time deposits 354.4 3,195 3.66% 249.8 1,407 2.28% ------------------------ ------------------------- 1,452.1 9,924 2.77% 1,063.4 4,519 1.72% Borrowings 255.0 2,311 3.68% 224.5 1,424 2.57% Junior subordinated debt 30.9 567 7.44% 30.9 466 6.12% ------------------------ ------------------------- Total interest- bearing liabilities 1,738.0 12,802 2.99% 1,318.8 6,409 1.97% -------- -------- Non-interest Bearing Liabilities Noninterest-bearing demand deposits 866.6 722.6 Other liabilities 12.7 11.7 Stockholders' equity 248.9 141.3 Total liabilities and stockholders' ---------- ---------- equity $2,866.2 $2,194.4 ========== ========== Net interest income and margin $29,394 4.53% $22,014 4.36% ======== ======== Net interest spread 3.50% 3.65% Western Alliance Bancorporation and Subsidiaries Operating Segment Results Unaudited Inter- Alliance Torrey segment Consoli- Nevada Bank of Pines Elimi- dated (in millions) Banks(1) Arizona Bank Other nations Company - ---------------------------------------------------------------------- At Mar. 31, 2006: Assets $2,567.6 $565.0 $438.2 $414.9 $(405.9)$3,579.8 Gross loans and deferred fees 1,559.3 447.0 347.9 - - $2,354.2 Less: Allowance for loan losses (18.0) (6.0) (3.7) - - (27.7) ------------------------------------------------ Net loans 1,541.3 441.0 344.2 - - 2,326.5 ------------------------------------------------ Deposits 2,121.1 509.5 328.0 - (1.2) 2,957.4 Stockholders' equity 256.7 46.9 35.4 363.2 (346.1) 356.1 (in thousands) Three Months Ended Mar. 31, 2006: Net interest income $18,693 $5,795 $4,978 $(73) $1 $29,394 Provision for loan losses (214) 534 222 - - 542 ------------------------------------------------ Net interest income after provision for loan losses 18,907 5,261 4,756 (73) 1 28,852 Noninterest income 1,616 366 267 10,500 (9,252) 3,497 Noninterest expense (10,026) (4,386)(3,186)(2,253) 331 (19,520) ------------------------------------------------ Income (loss) before income taxes 10,497 1,241 1,837 8,174 (8,920) 12,829 Income tax expense (benefit) 3,461 477 746 (293) - 4,391 ------------------------------------------------ Net income (loss) $7,036 $764 $1,091 $8,467 $(8,920) $8,438 ================================================ (in thousands) Western Alliance Bancorporation and Subsidiaries Operating Segment Results Inter- BankWest Alliance Torrey segment Consoli- of Bank of Pines Elimi- dated (in millions) Nevada Arizona Bank Other nations Company - ---------------------------------------------------------------------- At Mar. 31, 2005: Assets $1,654.5 $381.7 $294.3 $176.1 $(167.7)$2,338.9 Gross loans and deferred fees 875.1 264.4 192.3 - - 1,331.8 Less: Allowance for loan losses (10.9) (3.9) (2.3) - - (17.1) ------------------------------------------------ Net loans 864.2 260.5 190.0 - - 1,314.7 ------------------------------------------------ Deposits 1,420.7 341.6 263.8 - (7.4) 2,018.7 Stockholders' equity 94.6 31.4 26.5 144.2 (159.7) 137.0 (in thousands) Three Months Ended Mar. 31, 2005: Net interest income $15,832 $3,817 $2,810 $(445) $- $22,014 Provision for loan losses 959 478 310 - - 1,747 ------------------------------------------------ Net interest income after provision for loan losses 14,873 3,339 2,500 (445) - 20,267 Noninterest income 1,223 128 124 7,385 (6,276) 2,584 Noninterest expense (8,108) (2,688)(2,269)(1,710) 202 (14,573) ------------------------------------------------ Income (loss) before income taxes 7,988 779 355 5,230 (6,074) 8,278 Income tax expense (benefit) 2,672 308 130 (153) - 2,957 ------------------------------------------------ Net income (loss) $5,316 $471 $225 $5,383 $(6,074) $5,321 ================================================ (1) - Includes BankWest of Nevada and balance sheet data for Nevada First Bank. Nevada First Bank was acquired on March 31, 2006. CONTACT: Western Alliance Bancorporation Robert Sarver, 858-523-4601 (Media) Dale Gibbons, 702-248-4200 (Investor)