X0306 4 2020-07-01 0 0001157408 K12 INC LRN 0001259955 DAVIS NATHANIEL A 2300 CORPORATE PARK DRIVE HERNDON VA 20171 1 1 0 0 Chairman and CEO Common Stock 2020-07-01 4 S 0 64539 28.26 D 92528 D Common Stock 2020-07-06 4 S 0 61800 32.25 D 30728 D Common Stock 458674 I Nathaniel A Davis Revocable Trust The sale reported in this transaction was effected pursuant to a Rule 10b5-1 plan adopted by the reporting person on January 30, 2020. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $28.00 to $28.62, inclusive. The reporting person undertakes to provide to K12 Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $32.00 to $33.55, inclusive. The reporting person undertakes to provide to K12 Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. /s/ John C. Grothaus, attorney-in-fact 2020-07-06