X0306 4 2021-10-22 0001000753 INSPERITY, INC. NSP 0001055610 RAWSON RICHARD G 19001 CRESCENT SPRINGS DRIVE KINGWOOD TX 77339 1 Common Stock 2021-10-22 4 S 0 7397 121.92 D 116419 I By Self, as General Partner of POM Services, LLC, which is the General Partner of R&D Rawson, LP Common Stock 2021-10-22 4 S 0 403 122.78 D 116016 I By Self, as General Partner of POM Services, LLC, which is the General Partner of R&D Rawson, LP Common Stock 2021-10-22 4 S 0 7629 121.99 D 120571 I By Self, as General Partner of POM Services, LLC, which is the General Partner of RDKB Rawson, LP Common Stock 2021-10-22 4 S 0 171 122.75 D 120400 I By Self, as General Partner of POM Services, LLC, which is the General Partner of RDKB Rawson, LP Common Stock 2021-10-22 4 S 0 2776 121.93 D 61320 I By DMR Spousal Lifetime Trust Common Stock 2021-10-22 4 S 0 824 122.80 D 60496 I By DMR Spousal Lifetime Trust Common Stock 2021-10-25 4 S 0 7900 123.80 D 108116 I By Self, as General Partner of POM Services, LLC, which is the General Partner of R&D Rawson, LP Common Stock 2021-10-25 4 S 0 7900 123.81 D 112500 I By Self, as General Partner of POM Services, LLC, which is the General Partner of RDKB Rawson, LP Common Stock 2021-10-25 4 S 0 3800 123.79 D 56696 I By DMR Spousal Lifetime Trust Common Stock 700 I Held By Dawn M. Rawson, Spouse Common Stock 1974 D The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person in September 2021. Weighted average price. Actual prices ranged from $121.74 to $122.67. Full information regarding the number of shares sold at each separate price will be provided upon request to the SEC's staff, Insperity, Inc. or its stockholders. Weighted average price. Actual prices ranged from $122.75 to $122.79. Full information regarding the number of shares sold at each separate price will be provided upon request to the SEC's staff, Insperity, Inc. or its stockholders. Weighted average price. Actual prices ranged from $121.74 to $122.71. Full information regarding the number of shares sold at each separate price will be provided upon request to the SEC's staff, Insperity, Inc. or its stockholders. Weighted average price. Actual prices ranged from $121.74 to $122.74. Full information regarding the number of shares sold at each separate price will be provided upon request to the SEC's staff, Insperity, Inc. or its stockholders. Weighted average price. Actual prices ranged from $122.76 to $122.86. Full information regarding the number of shares sold at each separate price will be provided upon request to the SEC's staff, Insperity, Inc. or its stockholders. Weighted average price. Actual prices ranged from $123.76 to $123.85. Full information regarding the number of shares sold at each separate price will be provided upon request to the SEC's staff, Insperity, Inc. or its stockholders. Weighted average price. Actual prices ranged from $123.76 to $123.85. Full information regarding the number of shares sold at each separate price will be provided upon request to the SEC's staff, Insperity, Inc. or its stockholders. Weighted average price. Actual prices ranged from $123.76 to $123.81. Full information regarding the number of shares sold at each separate price will be provided upon request to the SEC's staff, Insperity, Inc. or its stockholders. /s/ Daniel D. Herink, by Power of Attorney 2021-10-26