X0202 SCHEDULE 13G 0000764532 XXXXXXXX LIVE Common Stock 03/31/2026 0000932696 INSIGHT ENTERPRISES INC 45765U103 2701 E INSIGHT WAY CHANDLER AZ 85286 Rule 13d-1(b) FIDUCIARY MANAGEMENT INC /WI/ WI 1672591.00 0.00 1875277.00 1875277.00 1875277.00 6.2 IA INSIGHT ENTERPRISES INC 2701 E INSIGHT WAY, CHANDLER, ARIZONA, 85286 Fiduciary Management, Inc. 790 N. Water Street Suite #2100 Milwaukee, WI 53202 Wisconsin N IA 1875277 6.23 1672591 0 1875277 1875277 Y N 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. FIDUCIARY MANAGEMENT INC /WI/ Jessica Taske 06/23/2026