X0508 4 2026-03-11 0 0001839839 Janus International Group, Inc. JBI 0001575134 Byerly Lance A C/O JANUS INTERNATIONAL GROUP, INC. 135 JANUS INTERNATIONAL BLVD. TEMPLE GA 30179 1 0 0 0 0 Common Stock 2026-03-11 4 A 0 443 0 A 45710 D In connection with his appointment to the Issuer's newly established Innovation and Technology Committee of the Board of Directors, the Reporting Person received restricted stock units ("RSUs") on March 11, 2026 (the "Grant Date") based on the closing price per share of the Issuer's common stock on the Grant Date. The RSUs will fully vest on June 9, 2026, subject to continued service on the Board of Directors, and will be settled by delivery of shares of the Issuer's common stock. Includes 25,177 RSUs. /s/ Elliot Kahler, as attorney-in-fact for Lance A. Byerly 2026-03-11