Exhibit 99.1

Supplemental Information

Financial Information for the Quarter Ending June 30, 2010

Operating and Asset Quality Highlights



|                                                              |  |                                 |         |   |           |   |         |           |  |   |         |  
|------------------------------------------------------------- |  | ------------------------------- | ------- | - | --------- | - | ------- | --------- |  | - | ------- | -
|                                                              |  | As of or for the Quarter Ended: |        
|($ in millions)                                               |  | 12/31/2009                      |         |   | 3/31/2010 |   |         | 6/30/2010 | 
|                                                              |  |                                 |        
|Operating Highlights                                          |  |                                 |         |   |           |   |         |           |  |   |         |  
|Net Interest Margin on a fully taxable equivalent basis (FTE) |  |                                 | 2.85    | % |           |   | 2.86    | %         |  |   | 2.88    | %
|Interest reversal on NPLs                                     |  |                                 | 0.75    | % |           |   | 0.88    | %         |  |   | 0.80    | %
|                                                              |  |                                 |         |   |           |   |         |           |  |   |         |  
|Adjusted FTE Net Interest Margin                              |  |                                 | 3.60    | % |           |   | 3.74    | %         |  |   | 3.68    | %
|                                                              |  |                                 |         |   |           |   |         |           |  |   |         |  
|                                                              |  |                                 |        
|Net interest income                                           |  | $                               | 81.0    |   |           | $ | 74.9    |           |  | $ | 73.1    |  
|Non interest income                                           |  |                                 | 28.1    |   |           |   | 25.3    |           |  |   | 41.2    |  
|                                                              |  |                                 |         |   |           |   |         |           |  |   |         |  
|Operating Revenue                                             |  | $                               | 109.1   |   |           | $ | 100.2   |           |  | $ | 114.3   |  
|                                                              |  |                                 |         |   |           |   |         |           |  |   |         |  
|                                                              |  |                                 |        
|Operating Expenses                                            |  | $                               | 94.5    |   |           | $ | 96.0    |           |  | $ | 97.3    |  
|OREO                                                          |  |                                 | (11.9   | ) |           |   | (10.9   | )         |  |   | (17.2   | )
|                                                              |  |                                 |         |   |           |   |         |           |  |   |         |  
|Adj. Operating Expenses                                       |  | $                               | 82.6    |   |           | $ | 85.1    |           |  | $ | 80.1    |  
|                                                              |  |                                 |         |   |           |   |         |           |  |   |         |  
|                                                              |  |                                 |        
|Non interest income / Operating Revenue                       |  |                                 | 25.7    | % |           |   | 25.2    | %         |  |   | 36.1    | %
|Adj. Efficiency Ratio                                         |  |                                 | 75.7    | % |           |   | 84.9    | %         |  |   | 70.1    | %
|                                                              |  |                                 |        
|Asset Quality Highlights                                      |  |                                 |         |   |           |   |         |           |  |   |         |  
|                                                              |  |                                 |        
|Total Credit Allowance (ALLL)                                 |  | $                               | 355.4   |   |           | $ | 307.1   |           |  | $ | 275.8   |  
|                                                              |  |                                 |        
|Non-Performing Loans (NPLs)                                   |  | $                               | 895.9   |   |           | $ | 958.8   |           |  | $ | 884.1   |  
|Total FAS 114 write-downs (1)                                 |  |                                 | 500.2   |   |           |   | 530.2   |           |  |   | 462.8   |  
|                                                              |  |                                 |         |   |           |   |         |           |  |   |         |  
|NPLs before FAS 114 write-downs                               |  | $                               | 1,396.1 |   |           | $ | 1,489.0 |           |  | $ | 1,346.9 |  
|                                                              |  |                                 |         |   |           |   |         |           |  |   |         |  
|                                                              |  |                                 |        
|Total Loans                                                   |  | $                               | 7,878.1 |   |           | $ | 7,193.5 |           |  | $ | 6,598.2 |  
|Total FAS 114 write-downs (1)                                 |  |                                 | 500.2   |   |           |   | 530.2   |           |  |   | 462.8   |  
|                                                              |  |                                 |         |   |           |   |         |           |  |   |         |  
|Total Loans before FAS 114 write-downs                        |  | $                               | 8,378.3 |   |           | $ | 7,723.7 |           |  | $ | 7,061.0 |  
|                                                              |  |                                 |         |   |           |   |         |           |  |   |         |  
|                                                              |  |                                 |        
|(ALLL + FAS 114 Write-downs) / Total Loans (2)                |  |                                 | 10.2    | % |           |   | 10.8    | %         |  |   | 10.5    | %
|(ALLL + FAS 114 Write-downs) / NPLs (2)                       |  |                                 | 61.3    | % |           |   | 56.2    | %         |  |   | 54.8    | %



|(1) | Does not include $1.4 million and $362,000 of write-downs on performing FAS 114 loans as of June 30, 2010 and March 31, 2010 respectively.
|--- | ------------------------------------------------------------------------------------------------------------------------------------------

|(2) | Total loans and NPLs grossed up for FAS 114 write-downs.
|--- | --------------------------------------------------------

Sterling had professional service expense of approximately $0.6 million, $2.8 million and $2.3 million for the three months ended June 30,
2010, March 31, 2010 and December 31, 2009, respectively. Sterling had loses on loan sales of approximately $1.2 million, $3.7 million and $0.1 million for the three months ended June 30, 2010, March 31, 2010 and
December 31, 2009, respectively.



---

Loans Past Due (NPLs) / Loans Held for Investment (HFI)



|                                             |  |                          |   |  |           |   |  |           |  
|-------------------------------------------- |  | ------------------------ | - |  | --------- | - |  | --------- | -
|                                             |  | As of the Quarter Ended: |  
|                                             |  | 12/31/2009               |   |  | 3/31/2010 |   |  | 6/30/2010 |  
|                                             |  |                          |  
|Loans 30-59 days past due (DPD)              |  | 1.79                     | % |  | 1.76      | % |  | 1.16      | %
|Loans 60-89 DPD                              |  | 1.75                     | % |  | 1.02      | % |  | 1.02      | %
|Loans 90+ DPD                                |  | 6.07                     | % |  | 8.48      | % |  | 8.10      | %
|                                             |  |                          |   |  |           |   |  |           |  
|Total                                        |  | 9.61                     | % |  | 11.26     | % |  | 10.28     | %
|                                             |  |                          |   |  |           |   |  |           |  
|                                             |  |                          |  
|Loans past due, excluding construction loans |  | 4.06                     | % |  | 4.09      | % |  | 4.64      | %
|                                             |  |                          |   |  |           |   |  |           |  

Non-Performing Loan Balance Trends



|                          |  |                                 |        |   |         |   |        |         |  |   |        |  
|------------------------- |  | ------------------------------- | ------ | - | ------- | - | ------ | ------- |  | - | ------ | -
|($ in millions)           |  | As of or for the Quarter Ended: |       
|                          |  | 12/31/09                        |        |   | 3/31/10 |   |        | 6/30/10 | 
|                          |  |                                 |       
|Beginning Balance         |  | $                               | 747.5  |   |         | $ | 895.9  |         |  | $ | 958.8  |  
|                          |  |                                 |       
|Loans Added               |  |                                 | 546.5  |   |         |   | 329.5  |         |  |   | 264.7  |  
|Loans Upgraded to Accrual |  |                                 | (23.0  | ) |         |   | (28.7  | )       |  |   | (45.2  | )
|Loans Paid-Off / Sold     |  |                                 | (62.6  | ) |         |   | (49.5  | )       |  |   | (113.1 | )
|Loans Charged-Off         |  |                                 | (255.6 | ) |         |   | (124.3 | )       |  |   | (82.6  | )
|Transfer to OREO          |  |                                 | (56.9  | ) |         |   | (64.1  | )       |  |   | (98.5  | )
|                          |  |                                 |        |   |         |   |        |         |  |   |        |  
|Net Change                |  |                                 | 148.4  |   |         |   | 62.9   |         |  |   | (74.7  | )
|                          |  |                                 |        |   |         |   |        |         |  |   |        |  
|                          |  |                                 |       
|Ending Balance            |  | $                               | 895.9  |   |         | $ | 958.8  |         |  | $ | 884.1  |  
|                          |  |                                 |        |   |         |   |        |         |  |   |        |  

Loan Portfolio Loss Coverage (as of June 30, 2010)



|                                 |  |                                      |       |   |                                            |      |   |                                       |   |                                                     |  |      |                                                   |  |      |  
|-------------------------------- |  | ------------------------------------ | ----- | - | ------------------------------------------ | ---- | - | ------------------------------------- | - | --------------------------------------------------- |  | ---- | ------------------------------------------------- |  | ---- | -
|($ in millions)                  |  | FAS 114Loans at NetCarryingValue (1) |       |   | Avg. Write-Down& SpecificAllowanceCoverage |      |   | FAS 5 LoansGeneralAllowanceCategories |   | GeneralAllowanceAvg. CoverageRate on All FAS5 Loans |  |      | GeneralAllowanceCoverage onSubstandardFAS 5 Loans | 
|                                 |  |                                      |       |   |                                           
|Construction  residential       |  | $                                    | 240.4 |   |                                            | 48.0 | % |                                       | $ | 133.6                                               |  | 22.5 | %                                                 |  | 38.3 | %
|Construction  commercial        |  |                                      | 158.7 |   |                                            | 36.2 | % |                                       |   | 258.2                                               |  | 18.3 | %                                                 |  | 30.8 | %
|Construction  multifamily       |  |                                      | 69.6  |   |                                            | 35.2 | % |                                       |   | 88.0                                                |  | 15.4 | %                                                 |  | 28.1 | %
|CRE  Owner Occupied (OO)        |  |                                      | 69.2  |   |                                            | 31.8 | % |                                       |   | 1,297.3                                             |  | 2.0  | %                                                 |  | 13.2 | %
|CRE investor commercial          |  |                                      | 56.1  |   |                                            | 32.8 | % |                                       |   | 1,309.3                                             |  | 3.9  | %                                                 |  | 25.8 | %
|CRE investor multifamily         |  |                                      | 23.2  |   |                                            | 21.3 | % |                                       |   | 438.6                                               |  | 1.5  | %                                                 |  | 13.4 | %
|C & I                            |  |                                      | 6.2   |   |                                            | 86.9 | % |                                       |   | 647.7                                               |  | 5.1  | %                                                 |  | 29.8 | %
|Residential  Non-Owner Occupied |  |                                      | 66.1  |   |                                            | 17.5 | % |                                       |   | 261.1                                               |  | 3.6  | %                                                 |  | 16.3 | %
|Residential  OO                 |  |                                      | 16.3  |   |                                            | 29.4 | % |                                       |   | 435.0                                               |  | 1.3  | %                                                 |  | 13.6 | %
|Consumer                         |  |                                      | 4.2   |   |                                            | 53.2 | % |                                       |   | 824.5                                               |  | 1.9  | %                                                 |  | 27.6 | %
|Unallocated Reserves             |  |                                      | (0.2  | ) |                                            |     |   |                                       |   |                                                    |  | 0.1  | %                                                 |  |     |  
|                                 |  |                                      |       |   |                                            |      |   |                                       |   |                                                     |  |      |                                                   |  |      |  
|                                 |  | $                                    | 709.8 |   |                                            | 40.5 | % |                                       | $ | 5,693.3                                             |  | 4.3  | %                                                 |  | 23.8 | %
|                                 |  |                                      |       |   |                                            |      |   |                                       |   |                                                     |  |      |                                                   |  |      |  
|Adjusted Carrying Value          |  |                                      |       |   |                                            | 59.5 | % |                                       |   |                                                     |  |      |                                                   |  |      |  
|                                 |  |                                      |       |   |                                            |      |   |                                       |   |                                                     |  |      |                                                   |  |      |  



|(1) | Includes both non-performing and performing FAS 114 loans net of FAS 114 write-downs and specific reserves.
|--- | -----------------------------------------------------------------------------------------------------------

Of NPLs, 61% are construction and carry an average loss coverage rate of 42%. The average of days that properties are OREO is 109 days.