X0306 4 2016-12-05 0 0001051003 BLACKROCK DEBT STRATEGIES FUND, INC. DSU 0001326138 Castellano Michael J 55 EAST 52ND STREET NEW YORK NY 10055 1 0 0 0 Common Stock 2016-12-05 4 P 0 1800 11.0286 A 4315 D These shares were purchased in multiple transactions ranging in price from $11.025 to $11.03. The Reporting Person undertakes to provide upon request by the Commission staff, the issuer, or the security holder of the issuer, full information regarding the number of shares purchased at each separate price. /s/ Eugene Drozdetski as Attorney-in-Fact 2016-12-06