144 0001579477 XXXXXXXX LIVE 0001589526 Blue Bird Corp 001-36267 3920 ARKWRIGHT ROAD SUITE 200 MACON GA 31210 478-822-2801 Horlock Phil Officer Director Common stock Muriel Siebert & Co., Inc.

18045 Oak Street Omaha NE 68130

60500 2985070.00 32410088 09/13/2024 NASDAQ Common stock 09/12/2024 Stock option exercise Issuer N 60500 09/12/2024 Cash paid for exercise price N Phil Horlock

3920 Arkwright Road Suite 200 Macon GA 31210

Common stock 08/23/2024 16080 761227.20 Phil Horlock

3920 Arkwright Road Suite 200 Macon GA 31210

Common stock 08/26/2024 32159 1573539.87 09/12/2024 /s/ Ted Scartz, as attorney-in-fact for Phil Horlock