SIRNA THERAPEUTICS INC Contracts & Agreements

AMENDMENT NO. 1 TO AGREEMENT AND PLAN OF MERGER (Filed With SEC on December 22, 2006)

AGREEMENT AND PLAN OF MERGER by and among MERCK & CO., INC., SPINNAKER ACQUISITION CORP. a wholly owned subsidiary of MERCK & CO., INC. and SIRNA THERAPEUTICS, INC. Dated as of... (Filed With SEC on November 1, 2006)

AMENDMENT NUMBER TWO TO RIGHTS AGREEMENT BETWEEN SIRNA THERAPEUTICS, INC. AND AMERICAN STOCK TRANSFER AND TRUST COMPANY (Filed With SEC on November 1, 2006)

FORM OF VOTING AGREEMENT (Filed With SEC on November 1, 2006)

Current assets (Filed With SEC on August 14, 2006)

Underwriting Agreement by and among the Company and UBS Securities LLC and J.P. Morgan Securities Inc. as representatives of the underwriters listed on Schedule A thereto, dated... (Filed With SEC on May 24, 2006)

Current assets (Filed With SEC on May 12, 2006)

****************************************************************************** (Filed With SEC on November 14, 2005)

STRATEGIC ALLIANCE AGREEMENT Between SIRNATHERAPEUTICS, INC. And ALLERGAN (Filed With SEC on November 14, 2005)

Sirna Therapeutics, Inc. 2005 Amended Director Compensation Plan (Filed With SEC on November 14, 2005)

INDEMNIFICATION AGREEMENT (Filed With SEC on November 14, 2005)

SECURITIES PURCHASE AGREEMENT (Filed With SEC on July 11, 2005)

SIRNA THERAPEUTICS, INC. WARRANT TO PURCHASE _________ SHARES OF COMMON STOCK (Filed With SEC on July 11, 2005)

SALE AGREEMENT (Filed With SEC on March 31, 2005)

CHINA BASIN LANDING (Filed With SEC on March 31, 2005)

INDEMNIFICATION AGREEMENT (Filed With SEC on August 14, 2003)

INDEMNIFICATION AGREEMENT (Filed With SEC on April 24, 2003)

NON-COMPETITION and NON-SOLICITATIONAGREEMENT (Filed With SEC on April 24, 2003)

NON-COMPETITION and NON-SOLICITATION AGREEMENT (Filed With SEC on April 24, 2003)

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SIRNA THERAPEUTICS INC Contracts & Agreements