X0306 4 2022-03-02 0001000753 INSPERITY, INC. NSP 0001055604 ARIZPE ARTHUR A 19001 CRESCENT SPRINGS DRIVE KINGWOOD TX 77339 1 President and COO Common Stock 2022-03-02 4 A 0 116 0 A 77894 D Common Stock 2022-03-02 4 F 0 1226 87.42 D 76668 D Common Stock 109808 I By S.C.A Legacy, Ltd. The number of shares represents the cash value of dividend rights that were settled in shares of common stock of Insperity, Inc. ("Common Stock") based on the fair market value of the Common Stock on the dividend payable dates. Payment of tax liability by withholding securities incident to the vesting of a restricted stock unit award. These shares are owned directly by Arizpe Investment Limited Partnership, which is controlled by Arizpe Management. Mr. Arizpe, by virtue of his position as Manager of Arizpe Management, may be deemed to beneficially own these shares. /s/ Christian P. Callens, by Power of Attorney 2022-03-04