Common Contracts

Southwest Capital Trust II 1,200,000 10.50% Trust Preferred Securities (Liquidation Amount of $25 per Preferred Security) UNDERWRITING AGREEMENT

Underwriting Agreement • June 30th, 2008 • Southwest Bancorp Inc • National commercial banks • Missouri

• Contract Type
  Underwriting Agreement
• Filed
  June 30th, 2008
• Company
  Southwest Bancorp Inc
• Industry
  National commercial banks
• Jurisdiction
  Missouri

Southwest Capital Trust II 1,200,000 ___% Trust Preferred Securities (Liquidation Amount of $25 per Preferred Security) UNDERWRITING AGREEMENT

Underwriting Agreement • June 23rd, 2008 • Southwest Bancorp Inc • National commercial banks • Missouri

• Contract Type
  Underwriting Agreement
• Filed
  June 23rd, 2008
• Company
  Southwest Bancorp Inc
• Industry
  National commercial banks
• Jurisdiction
  Missouri

PRIVATEBANCORP CAPITAL TRUST IV ($25 liquidation amount per security) guaranteed by PRIVATEBANCORP, INC. UNDERWRITING AGREEMENT

Underwriting Agreement • May 23rd, 2008 • Privatebancorp, Inc • State commercial banks • Illinois

• Contract Type
  Underwriting Agreement
• Filed
  May 23rd, 2008
• Company
  Privatebancorp, Inc
• Industry
  State commercial banks
• Jurisdiction
  Illinois

certain eligible officers, directors and employees of the Company and its subsidiaries (“Reserved Securities Participants”), as part of the distribution of the Firm Securities by the Underwriters, subject to the terms of this Agreement, the applicable rules, regulations and interpretations of the Financial Industry Regulatory Authority (“FINRA”) and all other applicable laws, rules and regulations. To the extent that such Reserved Securities are not orally confirmed for purchase, and subject to an agreement to purchase, by such eligible officers, directors and employees by the end of the first business day after the date of this Agreement, such Reserved Securities may be offered to the public as part of the public offering contemplated hereby. To the extent described in the Prospectus (as defined herein), the Firm Securities and the Option Securities will be guaranteed by the Company on a junior subordinated basis with respect to distributions and amounts payable upon liquidation or re

PRIVATEBANCORP CAPITAL TRUST IV [3,000,000] ___% Trust Preferred Securities ($25 liquidation amount per security) guaranteed by PRIVATEBANCORP, INC. FORM OF UNDERWRITING AGREEMENT

Underwriting Agreement • May 15th, 2008 • Privatebancorp, Inc • State commercial banks

• Contract Type
  Underwriting Agreement
• Filed
  May 15th, 2008
• Company
  Privatebancorp, Inc
• Industry
  State commercial banks

Underwriters to certain eligible officers, directors and employees of the Company and its subsidiaries (“Reserved Securities Participants”), as part of the distribution of the Firm Securities by the Underwriters, subject to the terms of this Agreement, the applicable rules, regulations and interpretations of the Financial Industry Regulatory Authority (“FINRA”) and all other applicable laws, rules and regulations. To the extent that such Reserved Securities are not orally confirmed for purchase, and subject to an agreement to purchase, by such eligible officers, directors and employees by the end of the first business day after the date of this Agreement, such Reserved Securities may be offered to the public as part of the public offering contemplated hereby. To the extent described in the Prospectus (as defined herein), the Firm Securities and the Option Securities will be guaranteed by the Company on a junior subordinated basis with respect to distributions and amounts payable upon l