X0305 4 2012-05-18 0 0000812301 Patient Safety Technologies, Inc PSTX.OB 0001220338 KINDERHOOK PARTNERS, LP TWO EXECUTIVE DRIVE SUITE 585 FORT LEE NJ 07024 0 0 1 0 0001542439 KINDERHOOK CAPITAL MANAGEMENT, LLC TWO EXECUTIVE DRIVE SUITE 585 FORT LEE NJ 07024 0 0 1 0 0001266402 KINDERHOOK GP LLC TWO EXECUTIVE DRIVE SUITE 585 FORT LEE NJ 07024 0 0 1 0 0001487632 Shah Tushar TWO EXECUTIVE DRIVE SUITE 585 FORT LEE NJ 07024 0 0 1 0 0001032874 CLEARMAN STEPHEN J TWO EXECUTIVE DRIVE SUITE 585 FORT LEE NJ 07024 0 0 1 0 Common Stock 2012-05-18 4 P 0 1045642 1.4 A 7359435 D Kinderhook Capital Management, LLC serves as the investment adviser to Kinderhook Partners, LP (the "Partnership"). Kinderhook GP, LLC serves as the general partner (the "General Partner") to the Partnership, and Messrs. Tushar Shah and Stephen Clearman serve as the General Partner's managing members, responsible for making investment decisions with respect to the Partnership and, as a result, Mr. Shah and Mr. Clearman may be deemed to control such entities. In addition, Mr. Shah and Mr. Clearman are responsible for making investment decisions with respect to Kinderhook Capital Management, LLC. Accordingly, Mr. Shah and Mr. Clearman may be deemed to have a beneficial interest in the shares of Common Stock by virtue of their indirect control of the Partnership's, the General Partner's and Kinderhook Capital Management, LLC's power to vote and/or dispose of the shares of Common Stock. Mr. Shah and Mr. Clearman disclaim beneficial ownership of the shares of Common Stock except to the extent of his respective pecuniary interest, if any, therein. Kinderhook Capital Management, LLC specifically disclaims beneficial ownership in the shares of Common Stock reported herein except to the extent of its pecuniary interest therein, if any. /s/ Stephen J. Clearman, Managing Member of Kinderhook Partners, LP 2012-05-18 /s/ Stephen J. Clearman, Managing Member of Kinderhook GP, LLC 2012-05-18 /s/ Stephen J. Clearman, Managing Member of Kinderhook Capital Management, LLC 2012-05-18 /s/ Tushar Shah 2012-05-18 /s/ Stephen J. Clearman 2012-05-18