X0306 4 2017-02-28 0 0001157408 K12 INC LRN 0001419879 Polsky Howard D. 2300 CORPORATE PARK DRIVE HERNDON VA 20171 0 1 0 0 General Counsel & Secretary Common Stock 2017-02-28 4 F 0 1417 17.86 D 114633 D Represents the number of shares withheld by the Company upon the vesting of restricted shares to cover the executive's withholding tax on income associated with the satisfaction of all vesting conditions. The number of shares withheld is based upon the closing price of a share of K12 common stock on the vesting date, or if the vesting date fell on a weekend or market holiday, upon the closing price of a share of K12 common stock on the most recent prior market day. /s/ John C. Grothaus, attorney-in-fact 2017-03-01