X0206 3 2021-06-07 0 0001839839 Janus International Group, Inc. JBI 0001323912 Feliciano Jose Enrique C/O JANUS INTERNATIONAL GROUP, INC. 135 JANUS INTERNATIONAL BLVD. TEMPLE GA 30179 1 0 1 0 Common Stock, par value $0.0001 per share 415250 I See footnote Common Stock, par value $0.0001 per share 1120119 I See footnote Common Stock, par value $0.0001 per share 25621077 I See footnote Common Stock, par value $0.0001 per share 1718137 I See footnote Common Stock, par value $0.0001 per share 12780841 I See footnote Common Stock, par value $0.0001 per share 11198961 I See footnote Warrant 11.50 2021-07-07 2026-06-07 Common Stock 29990 I See footnote Warrant 11.50 2021-07-07 2026-06-07 Common Stock 80898 I See footnote Warrant 11.50 2021-07-07 2026-06-07 Common Stock 1850395 I See footnote Warrant 11.50 2021-07-07 2026-06-07 Common Stock 124088 I See footnote Warrant 11.50 2021-07-07 2026-06-07 Common Stock 923053 I See footnote Warrant 11.50 2021-07-07 2026-06-07 Common Stock 808802 I See footnote Securities held of record by Clearlake Capital Partners IV (AIV-Jupiter) USTE, L.P., a Cayman Islands limited partnership ("CCPIV USTE"). Securities held of record by Clearlake Capital Partners IV (Offshore), L.P., a Cayman Islands limited partnership ("CCPIV Offshore"). Securities held of record by Clearlake Capital Partners V, L.P., a Delaware limited partnership ("CCPV"). Securities held of record by Clearlake Capital Partners V (USTE), L.P., a Delaware limited partnership ("CCPV USTE"). Securities held of record by Clearlake Capital Partners V (Offshore), L.P., a Cayman Islands limited partnership ("CCPV Offshore"). Securities held of record by Clearlake Capital Partners IV (AIV-Jupiter), L.P., a Cayman Islands limited partnership ("CCPIV"). CCPIV, CCPIV USTE and CCPIV Offshore are managed by Clearlake Capital Management IV, L.P., a Delaware limited partnership ("CCMIV"). CCMIV's general partner is Clearlake Capital Group, L.P., whose general partner is CCG Operations, L.L.C., a Delaware limited liability company ("CCG Ops"). The general partner for each of CCPIV, CCPIV USTE and CCPIV Offshore is Clearlake Capital Partners IV GP, L.P., a Delaware limited partnership ("CCPIV GP"). CCPIV GP's general partner is Clearlake Capital Partners, LLC, a Delaware limited liability company ("CCP"). CCPV, CCPV USTE and CCPV Offshore are managed by Clearlake Capital Management V, L.P., a Delaware limited partnership ("CCMV"). CCMV's general partner is Clearlake Capital Group, L.P., whose general partner is CCG Ops. The general partner for each of CCPV, CCPV USTE and CCPV Offshore is Clearlake Capital Partners V GP, L.P., a Delaware limited partnership ("CCPV GP"). (Continued from Footnote 7) CCPV GP's general partner is CCP. CCP's managing member is CCP MM, LLC, a Delaware limited liability company ("CCP MM"). CCP MM's managing member is CCG Ops. CCG Global LLC, a Delaware liability company ("CCG Global"), is the managing member of CCG Ops. The reporting person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of all of the reported securities for purposes of Section 16 or for any other purpose. Exhibit List: Exhibit 24.1 - Power of Attorney /s/ Jose E. Feliciano 2021-06-07