X0508 4 2025-11-05 0 0001800227 IAC Inc. IAC 0000927067 Diller Barry C/O IAC INC. 555 WEST 18TH STREET NEW YORK NY 10011 1 1 0 0 Chairman & Senior Executive 0 Common Stock, par value $0.0001 2025-11-05 4 M 0 438757 0 A 906202 D Common Stock, par value $0.0001 2025-11-05 4 F 0 240968 33.01 D 665234 D Common Stock, par value $0.0001 136711 I Held through trusts for the benefit of the reporting person's family Restricted Stock Units 0 2025-11-05 4 M 0 438757 0 D 2025-11-05 2025-11-05 Common Stock, par value $0.0001 438757 0 D Reflects shares of IAC common stock acquired upon the vesting of restricted stock units (see footnote 3 below). Represents shares withheld to cover taxes due in connection with vesting of restricted stock units (see footnote 3 below). Represents restricted stock units that vested in full on November 5, 2025. The amount of restricted stock units reported on this Form 4 is adjusted to reflect IAC's spin-off of each of Match Group Inc., Vimeo, Inc. and Angi Inc. /s/ Kyra Ayo Caros as Attorney-in-fact for Barry Diller 2025-11-07