PSEC – A Prospect Capital Fund

Prospect Capital Provides $21 Million in Acquisition Financing to SonicWALL to Support Take-Private Transaction by Thoma Bravo and Teachers’ Private Capital

July 27, 2010

NEW YORK, NY – (MARKET WIRE) – 07/27/10 – Prospect Capital Corporation
(NASDAQ: PSEC) (“Prospect”) announced today that Prospect has made a
secured debt investment of $21 million in SonicWALL, Inc.
(“SonicWALL”), a global leader i…