X0303 4 2010-03-15 0 0001326003 BlackRock Kelso Capital CORP BKCC 0001333857 BlackRock Kelso Capital Advisors LLC 40 EAST 52ND STREET NEW YORK NY 10022 0 0 0 1 Investment adviser to Issuer Common Stock, par value $0.001 per share 2010-03-15 4 A 0 282276 0 D 42493.31 D Restricted Shares granted by the Reporting Person to certain of its officers and employees pursuant to Restricted Stock Agreements, each dated March 15, 2010, vesting in equal installments on January 2, 2011, 2012 and 2013. Excludes 30,799.54 Restricted Shares granted by the Reporting Person to certain of its officers and employees pursuant to Restricted Stock Agreements, each dated December 31, 2007, vesting on January 2, 2011; 82,967 Restricted Shares granted by the Reporting Person to certain of its officers and employees pursuant to Restricted Stock Agreements, each dated January 2, 2009, vesting in equal installments on January 2, 2011 and 2012; 1,610 Restricted Shares granted by the Reporting Person to one of its officers pursuant to a Restricted Stock Agreement, dated January 23, 2009, vesting in equal installments on January 2, 2011 and 2012; and 28,404 Restricted Shares granted by the Reporting Person to certain of its officers and employees pursuant to Restricted Stock Agreements, each dated January 2, 2010, vesting in equal installments on January 2, 2011, 2012 and 2013. Frank D. Gordon, Chief Financial Officer 2010-03-16