SCHEDULE 13G/A 0000945621-21-000064 0001538449 XXXXXXXX LIVE 7 Common Stock 12/31/2025 0001000753 Insperity, Inc. 45778Q107 19001 Crescent Springs Drive Kingwood TX 77339 Rule 13d-1(b) Mawer Investment Management Ltd. A0 1194663 0 1200192 0 1200192 N 3.18 IA Based upon 37,704,152 shares of Common Stock of Insperity, Inc. (the "Issuer") outstanding as of October 27, 2025 as reported in the Issuer's Form 10-Q (Quarterly Report) filed with the Securities and Exchange Commission on November 4, 2025. Insperity, Inc. 19001 Crescent Springs Drive, Kingwood, Texas, 77339 Mawer Investment Management Ltd. 600, 517 - 10th Avenue SW Calgary, Alberta, Canada T2R 0A8 Canada N IA 1,200,192 3.18% 1,194,663 0 1,200,192 0 N Y Y Y Y Y N By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11. Mawer Investment Management Ltd. /s/ John Wilson, Portfolio Manager 01/23/2026