Form4insider filings, from the source

Company · CIK 0001026655 · SIC 3089 — Plastics Products, NEC · NYSE

CORE MOLDING TECHNOLOGIES INC · CMT

Insider activity reported against this company. All insider holders · On EDGAR ↗

1M3M6M1Y2YAll datashares as filed — not split-adjusted
Open-market buys & salesbuys $6,487 · 1sales $353k · 5net −$346k
$10k$10k$100k$100k$1M$1MbuyssalesMar 28Apr 27May 28Jun 28Jul 29Aug 28Sep 28

Reported at this company — common stock

TradeReported (ET)InsiderSharesAvg priceTotalOwned afterΔ stakeFlags
Aug 7, 2026 SForm 4 →Aug 10, 6:20 pm EDTRalph O HellmoldDirector4,268$25.82$110,20033,501−11.3%
Jun 29, 2026 PForm 4 →Jul 1, 4:06 pm EDTAlex Joseph PandaEVP, Treasurer, Secretary, CFO275$23.59$6,48744,590+0.62%
Jun 23, 2026 SForm 4 →Jun 25, 5:02 pm EDTThomas R CellittiDirector1,413$24.04$33,97192,393−1.51%
Jun 17, 2026 SForm 4 →Jun 22, 5:04 pm EDTThomas R CellittiDirector2,507$24.00$60,17293,806−2.60%
Jun 15, 2026 SForm 4 →Jun 17, 5:02 pm EDTThomas R CellittiDirector2,080$25.03$52,05496,313−2.11%
Jun 11, 2026 SForm 4 →Jun 15, 4:27 pm EDTThomas R CellittiDirector3,900$24.65$96,11798,393−3.81%
Jun 1, 2026 AForm 4 →Jul 10, 4:29 pm EDTEric PalomakiChief Executive Officer20,000——181,760— late

Reported at this company — derivatives (options, RSUs, warrants)

No reported derivative activity in this period.