X0306 4 2013-02-15 0000889930 OVERLAND STORAGE INC OVRL 0001409130 Kalbfleisch Kurt L. C/O OVERLAND STORAGE, INC. 9112 SPECTRUM CENTER BOULEVARD SAN DIEGO CA 92123 0 1 0 0 SVP & CFO Common Stock 2013-02-15 4 F 0 43982 .99 D 493226 D This transaction represents shares withheld by the issuer to satisfy tax withholding obligations incurred in connection with the vesting of restricted stock units under an award granted to the reporting person on June 29, 2011. /s/ Kurt Kalbfleisch 2013-02-19