X0306 4 2017-02-23 0 0001130166 Cyclacel Pharmaceuticals, Inc. CYCC 0001178579 TANG KEVIN C 4747 EXECUTIVE DRIVE SUITE 510 SAN DIEGO CA 92121 0 0 1 0 0001232621 TANG CAPITAL MANAGEMENT LLC 4747 EXECUTIVE DRIVE SUITE 510 SAN DIEGO CA 92121 0 0 1 0 0001191935 TANG CAPITAL PARTNERS LP 4747 EXECUTIVE DRIVE SUITE 510 SAN DIEGO CA 92121 0 0 1 0 Common Stock 2017-02-23 4 P 0 134200 4.3374 A 559900 I By LP This transaction was executed in multiple trades at prices ranging from $4.09 to $4.50. The price reported above reflects the weighted average purchase price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected. The securities are beneficially owned by Tang Capital Partners, LP ("TCP"). Kevin C. Tang is the sole manager of Tang Capital Management, LLC, which is the general partner of TCP. Mr. Tang disclaims beneficial ownership of the securities, except to the extent of his pecuniary interest therein. Kevin C. Tang 2017-02-27 Kevin C. Tang, Managing Member 2017-02-27 Kevin C. Tang, Managing Member of Tang Capital Management, LLC, General Partner 2017-02-27