X0306 4 2022-05-19 0 0001745041 IAA, Inc. IAA 0001669069 Carlson Christopher TWO WESTBROOK CORPORATE CENTER, SUITE 500 WESTCHESTER IL 60154 0 1 0 0 VP and Corporate Controller Common Stock 2022-05-19 4 A 0 1695 0.00 A 7122.5857 D Represents a grant of restricted stock units that vest in three substantially equal annual installments beginning on the first anniversary of the grant date, subject to the Reporting Person's continued employment with the Issuer. Each restricted stock unit represents the right to receive one share of the Issuer's common stock. Includes 61.1882 shares of the Issuer's common stock that were purchased by the Reporting Person under the Issuer's employee stock purchase plan since the last filing of a Form 4 by the Reporting Person. Christopher Carlson /s/ Sidney Peryar as attorney-in-fact 2022-05-20