X0508 4 2025-11-24 0 0001580905 Installed Building Products, Inc. IBP 0001598688 Edwards Jeffrey W. C/O INSTALLED BUILDING PRODUCTS, INC. 495 S. HIGH STREET, SUITE 50 COLUMBUS OH 43215 1 1 1 0 President, CEO and Chairman 0001610199 IBP Holding Co C/O INSTALLED BUILDING PRODUCTS, INC. 495 S. HIGH STREET, SUITE 50 COLUMBUS OH 43215 0 0 0 1 Director by Deputization 0001609973 PJAM IBP Holdings, Inc. C/O INSTALLED BUILDING PRODUCTS, INC. 495 S. HIGH STREET, SUITE 50 COLUMBUS OH 43215 0 0 0 1 Director by Deputization 0 Common Stock, $0.01 par value per share 2025-11-24 4 D 0 150000 250.96 D 2127819 I See footnote Common Stock, $0.01 par value per share 183660 D Common Stock, $0.01 par value per share 1416194 I See footnote Common Stock, $0.01 par value per share 173408 I See footnote Pursuant to the Issuer's previously announced stock buyback program, the Issuer entered into a Share Repurchase Agreement with PJAM IBP Holdings, Inc. ("PJAM") for the purchase of 150,000 shares of its common stock in a privately-negotiated transaction for an aggregate purchase price of $37,643,760. The repurchase was approved by the company's board of directors and is exempt from Section 16(b) by the virtue of Rule 16b-3(e). These securities are held directly by PJAM. The Reporting Persons, other than PJAM, disclaim beneficial ownership in the reported securities except to the extent of his or its pecuniary interest therein. IBP Holding Company is the sole shareholder of PJAM. These securities are held directly by Installed Building Systems, Inc. The Reporting Persons, other than Installed Building Systems, Inc., disclaim beneficial ownership in the reported securities except to the extent of his or its pecuniary interest therein. These securities are held by a trust for the benefit of one of Mr. Edwards' children. The Reporting Persons disclaim beneficial ownership of the reported securities except to the extent of his or its pecuniary interest therein. /s/ Michael T. Miller, Attorney-in-Fact 2025-11-24 /s/ Michael T. Miller, Attorney-in-Fact for IBP Holding Company 2025-11-24 /s/ Michael T. Miller, Attorney-in-Fact for PJAM IBP Holdings, Inc. 2025-11-24