144 0001591397 XXXXXXXX LIVE 0001026655 CORE MOLDING TECHNOLOGIES INC 001-12505 800 MANOR PARK DRIVE P O BOX 28183 COLUMBUS OH 43228 8006666960 Zimmer John P Officer Common Charles Schwab Corp

3000 SCHWAB WAY WESTLAKE TX 76262

30000 821100.00 9001199 09/05/2023 NYSE Common 06/27/2023 Open Market Open Market N 2500 06/27/2023 Cash Common 08/05/2023 Exercised Stock Right Core Molding Technologies Inc. N 8975 08/10/2023 Equity Compensation Common 05/12/2017 Restricted Stock Units Core Molding Technologies Inc. N 11041 05/12/2017 Equity Compensation Common 01/13/2017 Restricted Stock Units Core Molding Technologies Inc. N 7484 01/13/2017 Equity Compensation Y 09/05/2023 John P. Zimmer