144 0001205068 XXXXXXXX LIVE 0001035983 COMFORT SYSTEMS USA INC 001-13011 9753 KATY FREEWAY SUITE 700 HOUSTON TX 77024 7138309600 BULLS HERMAN E Director Common Charles Schwab & Co

3000 Schwab Way Westlake TX 76262

2000 2027221.76 5851415 10/29/2025 NYSE Common 05/29/2021 Equity Compensation Issuer N 2000 05/29/2021 Services Rendered N Herman E Bulls

9753 KATY FREEWAY SUITE 700 Houston TX 77024

Common 08/27/2025 3000 2129974.51 Shares to be sold out of account registered: The Herman E Bulls Revocable Trust U/A DTD 03/17/2016 10/29/2025 Herman E Bulls