Core Molding Technologies Inc (CMT) · Insider trading

What Core Molding Technologies's directors, officers and largest holders bought and sold themselves, from the Form 4 each of them files with the SEC within two business days of a trade. Open-market purchases and sales first: those are the trades somebody chose to make at the market price.

Bought, 12 months

$24,569

3 insiders, 4 trades

Sold, 12 months

$352,520

2 insiders, 0% under a plan

Net, 12 months

−$327,950

bought less sold

Latest filing

2026-08-10

filings read to 2026-10-19

Bought and sold at the market, by month

Two years. Purchases above the line, sales below, in dollars.

Bought Sold Largest month: $1.14M

Who traded, two years

Insider	Bought	Sold	Trades	Last trade	Holds after
Duvall David L.Director, Chief Executive Officer	–	$2.62M	18	2025-09-09	148,780
Cellitti Thomas RDirector	–	$430,444	11	2026-06-25	92,393
Zimmer John PEVP, Treasurer, Secretary, CFO	–	$349,672	3	2024-11-26	97,959
Jauchius MatthewDirector	–	$119,437	1	2025-09-08	51,522
Hellmold Ralph ODirector	–	$110,200	1	2026-08-07	33,501
Palomaki EricChief Operating Officer	$36,022	–	4	2026-03-20	168,699
Panda Alex JosephEVP, Treasurer, Secretary, CFO	$28,124	–	8	2026-06-29	44,590
Gayford Michael JamesEVP of Operations	$10,060	–	1	2026-03-19	27,167

Open-market purchases and sales

Newest first. “Plan” marks a trade made under a 10b5-1 plan set up in advance.

Date	Insider	Trade	Shares	Price	Value	Holds after	Filing
2026-08-07	Hellmold Ralph ODirector	Sale	4,268	25.82	$110,200	33,501	Form 4
2026-06-29	Panda Alex JosephEVP, Treasurer, Secretary, CFO	Buy	275	23.59	$6,487	44,590	Form 4
2026-06-25	Cellitti Thomas RDirector	Sale	150	24.00	$3,600	92,393	Form 4
2026-06-24	Cellitti Thomas RDirector	Sale	750	24.07	$18,052	92,543	Form 4
2026-06-23	Cellitti Thomas RDirector	Sale	513	24.02	$12,322	93,293	Form 4
2026-06-18	Cellitti Thomas RDirector	Sale	12	24.00	$288	93,806	Form 4
2026-06-17	Cellitti Thomas RDirector	Sale	2,495	24.00	$59,880	93,818	Form 4
2026-06-16	Cellitti Thomas RDirector	Sale	80	24.00	$1,920	96,313	Form 4
2026-06-15	Cellitti Thomas RDirector	Sale	2,000	25.07	$50,140	96,393	Form 4
2026-06-12	Cellitti Thomas RDirector	Sale	3,000	24.77	$74,310	98,393	Form 4
2026-06-11	Cellitti Thomas RDirector	Sale	900	24.23	$21,807	101,393	Form 4
2026-03-20	Palomaki EricChief Operating Officer	Buy	200	20.15	$4,030	168,699	Form 4
2026-03-20	Palomaki EricChief Operating Officer	Buy	200	19.96	$3,992	168,899	Form 4
2026-03-19	Gayford Michael JamesEVP of Operations	Buy	500	20.12	$10,060	27,167	Form 4
2025-09-09	Duvall David L.Director, Chief Executive Officer	Sale	50,000	20.32	$1.02M	148,780	Form 4
2025-09-08	Jauchius MatthewDirector	Sale	6,020	19.84	$119,437	51,522	Form 4
2025-08-26	Panda Alex JosephEVP, Treasurer, Secretary, CFO	Buy	200	19.10	$3,820	30,596	Form 4
2025-08-26	Cellitti Thomas RDirector	Sale	3,103	18.64	$57,840	96,165	Form 4
2025-08-25	Cellitti Thomas RDirector	Sale	6,897	18.89	$130,284	99,268	Form 4
2025-08-25	Panda Alex JosephEVP, Treasurer, Secretary, CFO	Buy	200	19.15	$3,830	30,396	Form 4
2025-08-21	Panda Alex JosephEVP, Treasurer, Secretary, CFO	Buy	200	17.90	$3,580	30,196	Form 4
2025-08-19	Panda Alex JosephEVP, Treasurer, Secretary, CFO	Buy	59	17.98	$1,061	29,996	Form 4
2025-08-18	Panda Alex JosephEVP, Treasurer, Secretary, CFO	Buy	141	17.50	$2,468	29,937	Form 4
2025-08-13	Panda Alex JosephEVP, Treasurer, Secretary, CFO	Buy	200	17.33	$3,466	29,796	Form 4
2025-08-11	Panda Alex JosephEVP, Treasurer, Secretary, CFO	Buy	200	17.06	$3,412	29,596	Form 4
2025-06-20	Duvall David L.Director, Chief Executive Officer	Sale	4,046	16.50	$66,759	198,780	Form 4
2025-06-18	Duvall David L.Director, Chief Executive Officer	Sale	1,000	16.49	$16,490	202,826	Form 4
2025-06-16	Duvall David L.Director, Chief Executive Officer	Sale	8,400	16.56	$139,104	203,826	Form 4
2025-06-13	Duvall David L.Director, Chief Executive Officer	Sale	24	16.60	$398	212,226	Form 4
2025-06-10	Duvall David L.Director, Chief Executive Officer	Sale	2,000	16.43	$32,860	212,250	Form 4
2025-06-09	Duvall David L.Director, Chief Executive Officer	Sale	4,260	16.16	$68,842	214,250	Form 4
2025-06-06	Duvall David L.Director, Chief Executive Officer	Sale	9,970	16.07	$160,218	218,510	Form 4
2025-06-05	Duvall David L.Director, Chief Executive Officer	Sale	11,300	16.02	$181,026	228,480	Form 4
2025-06-04	Duvall David L.Director, Chief Executive Officer	Sale	9,000	16.02	$144,180	239,780	Form 4
2025-03-17	Palomaki EricEVP,Operations	Buy	1,000	13.99	$13,990	160,244	Form 4
2025-03-14	Palomaki EricEVP,Operations	Buy	1,000	14.01	$14,010	159,244	Form 4
2024-12-26	Duvall David L.Director, Chief Executive Officer	Sale	4,500	16.47	$74,115	238,841	Form 4
2024-12-24	Duvall David L.Director, Chief Executive Officer	Sale	14,171	16.54	$234,388	243,341	Form 4
2024-12-20	Duvall David L.Director, Chief Executive Officer	Sale	13,919	16.18	$225,209	257,512	Form 4
2024-12-19	Duvall David L.Director, Chief Executive Officer	Sale	1,000	16.05	$16,050	271,431	Form 4

7 more

2024-12-18	Duvall David L.Director, Chief Executive Officer	Sale	1,000	16.15	$16,150	272,431	Form 4
2024-12-10	Duvall David L.Director, Chief Executive Officer	Sale	10,950	16.37	$179,252	273,431	Form 4
2024-12-09	Duvall David L.Director, Chief Executive Officer	Sale	2,000	16.55	$33,100	284,381	Form 4
2024-12-06	Duvall David L.Director, Chief Executive Officer	Sale	1,000	16.47	$16,470	286,381	Form 4
2024-11-26	Zimmer John PEVP, Treasurer, Secretary, CFO	Sale	10,000	17.75	$177,500	97,959	Form 4
2024-11-26	Zimmer John PEVP, Treasurer, Secretary, CFO	Sale	2,100	17.64	$37,044	95,859	Form 4
2024-11-25	Zimmer John PEVP, Treasurer, Secretary, CFO	Sale	7,600	17.78	$135,128	107,959	Form 4

Grants, exercises and other transactions

Pay, tax and paperwork rather than a choice to trade at the market price. Two years.

29 × grant or award29 × shares withheld for tax

Show them

Date	Insider	What	Shares	Price	Holds after	Filing
2026-06-01	Palomaki EricChief Executive Officer	Grant or award A	+20,000	–	181,760	Form 4
2026-03-27	Palomaki EricChief Operating Officer	Shares withheld for tax F	−2,549	18.77	166,350	Form 4
2026-03-27	Palomaki EricChief Operating Officer	Shares withheld for tax F	−807	18.77	165,543	Form 4
2026-03-27	Palomaki EricChief Operating Officer	Shares withheld for tax F	−1,748	20.02	163,795	Form 4
2026-03-27	Palomaki EricChief Operating Officer	Shares withheld for tax F	−2,035	19.15	161,760	Form 4
2026-03-27	Duvall David L.Director, Chief Executive Officer	Shares withheld for tax F	−5,595	18.77	147,167	Form 4
2026-03-27	Duvall David L.Director, Chief Executive Officer	Shares withheld for tax F	−1,772	18.77	145,395	Form 4
2026-03-27	Duvall David L.Director, Chief Executive Officer	Shares withheld for tax F	−3,988	20.02	141,407	Form 4
2026-03-27	Duvall David L.Director, Chief Executive Officer	Shares withheld for tax F	−4,417	19.15	136,990	Form 4
2026-03-27	Pulliam StephanieEVP, Human Resources	Shares withheld for tax F	−199	18.77	18,946	Form 4
2026-03-27	Pulliam StephanieEVP, Human Resources	Shares withheld for tax F	−613	19.15	18,333	Form 4
2026-03-27	Panda Alex JosephEVP, Treasurer, Secretary, CFO	Shares withheld for tax F	−501	18.77	45,521	Form 4
2026-03-27	Panda Alex JosephEVP, Treasurer, Secretary, CFO	Shares withheld for tax F	−159	18.77	45,362	Form 4
2026-03-27	Panda Alex JosephEVP, Treasurer, Secretary, CFO	Shares withheld for tax F	−344	20.02	45,018	Form 4
2026-03-27	Panda Alex JosephEVP, Treasurer, Secretary, CFO	Shares withheld for tax F	−703	19.15	44,315	Form 4
2026-03-27	Gayford Michael JamesEVP of Operations	Shares withheld for tax F	−962	19.40	20,730	Form 4
2026-03-27	Gayford Michael JamesEVP of Operations	Shares withheld for tax F	−102	19.40	20,628	Form 4
2026-03-27	Gayford Michael JamesEVP of Operations	Shares withheld for tax F	−725	19.40	19,903	Form 4
2026-03-27	Gayford Michael JamesEVP of Operations	Shares withheld for tax F	−400	19.40	19,503	Form 4
2026-03-27	Alanis ArnoldEVP of Operations	Shares withheld for tax F	−370	18.77	26,108	Form 4
2026-03-27	Alanis ArnoldEVP of Operations	Shares withheld for tax F	−118	18.77	25,990	Form 4
2026-03-27	Alanis ArnoldEVP of Operations	Shares withheld for tax F	−276	20.02	25,714	Form 4
2026-03-27	Alanis ArnoldEVP of Operations	Shares withheld for tax F	−303	19.15	25,411	Form 4
2026-03-11	Hellmold Ralph ODirector	Grant or award A	+4,179	–	37,769	Form 4
2026-03-11	Cellitti Thomas RDirector	Grant or award A	+6,128	–	102,293	Form 4
2026-03-11	Jauchius MatthewDirector	Grant or award A	+4,590	–	56,112	Form 4
2026-03-11	Minarro SalvadorDirector	Grant or award A	+4,179	–	14,435	Form 4
2026-03-11	Smith Andrew ODirector	Grant or award A	+4,436	–	100,926	Form 4
2026-03-11	Palomaki EricChief Operating Officer	Grant or award A	+13,462	–	166,715	Form 4
2026-03-11	Palomaki EricChief Operating Officer	Grant or award A	+1,784	19.15	168,499	Form 4
2026-03-11	Duvall David L.Director, Chief Executive Officer	Grant or award A	+3,982	19.15	152,762	Form 4
2026-03-11	Kowaleski Sandra LeeDirector	Grant or award A	+4,436	–	35,071	Form 4
2026-03-11	Bantz AlexanderChief Commercial Officer	Grant or award A	+5,400	–	26,394	Form 4
2026-03-11	Pulliam StephanieEVP, Human Resources	Grant or award A	+4,846	–	24,416	Form 4
2026-03-11	Panda Alex JosephEVP, Treasurer, Secretary, CFO	Grant or award A	+6,154	–	45,581	Form 4
2026-03-11	Panda Alex JosephEVP, Treasurer, Secretary, CFO	Grant or award A	+441	19.15	46,022	Form 4
2026-03-11	Gayford Michael JamesEVP of Operations	Grant or award A	+4,846	–	26,353	Form 4
2026-03-11	Gayford Michael JamesEVP of Operations	Grant or award A	+314	19.15	26,667	Form 4
2026-03-11	Alanis ArnoldEVP of Operations	Grant or award A	+4,846	–	30,752	Form 4
2026-03-11	Alanis ArnoldEVP of Operations	Grant or award A	+397	19.15	31,149	Form 4
2026-01-12	Palomaki EricChief Operating Officer	Grant or award A	+12,000	–	153,253	Form 4
2026-01-12	Panda Alex JosephEVP, Treasurer, Secretary, CFO	Grant or award A	+6,000	–	39,427	Form 4
2025-05-12	Palomaki EricChief Operating Officer	Shares withheld for tax F	−3,723	15.67	141,253	Form 4
2025-05-12	Zimmer John PEVP, Treasurer, Secretary, CFO	Shares withheld for tax F	−3,859	15.67	87,255	Form 4
2025-05-12	Duvall David L.Director, Chief Executive Officer	Shares withheld for tax F	−9,685	15.64	248,780	Form 4
2025-03-11	Palomaki EricChief Operating Officer	Grant or award A	+13,450	–	144,976	Form 4/A
2025-03-11	Duvall David L.Director, Chief Executive Officer	Grant or award A	−29,704	–	258,465	Form 4/A
2025-03-11	Smith Andrew ODirector	Grant or award A	+6,540	12.81	96,490	Form 4
2025-03-11	Cellitti Thomas RDirector	Grant or award A	+9,020	12.81	106,165	Form 4
2025-03-11	Hellmold Ralph ODirector	Grant or award A	+6,150	12.81	33,590	Form 4
2025-03-11	Jauchius MatthewDirector	Grant or award A	+6,775	12.81	57,542	Form 4
2025-03-11	Kowaleski Sandra LeeDirector	Grant or award A	+6,540	12.81	30,635	Form 4
2025-03-11	Minarro SalvadorDirector	Grant or award A	+6,150	12.81	10,256	Form 4
2025-03-11	Duvall David L.Director, Chief Executive Officer	Grant or award A	+59,408	12.81	298,249	Form 4
2025-03-10	Zimmer John PEVP, Treasurer, Secretary, CFO	Shares withheld for tax F	−2,818	13.52	91,114	Form 4/A
2025-03-10	Duvall David L.Director, Chief Executive Officer	Shares withheld for tax F	−4,017	13.63	228,761	Form 4/A
2025-03-07	Zimmer John PEVP, Treasurer, Secretary, CFO	Shares withheld for tax F	−1,927	13.63	92,971	Form 4/A
2025-03-07	Duvall David L.Director, Chief Executive Officer	Shares withheld for tax F	−5,689	13.52	232,778	Form 4/A

How to read it

Buy, sale: Code P and S on the form: shares bought or sold in the market, at the market price. The other codes are mostly pay (a grant, an option exercised) or tax (shares the company withheld), and say little about what the insider thinks of the price.
Plan: A sale or purchase under a Rule 10b5-1 plan, set up in advance and running on its own schedule. Since April 2023 the form has a box for it. Much executive selling is planned and says more about diversifying than about the company.
Holds after: The shares the insider still held after the trade, in the form the trade was in (directly, or indirectly through a trust or a fund).
Value: Shares times the price the form reports, which is often an average over several fills on the day.

Read from the SEC's own quarterly data sets of Forms 3, 4 and 5, and from each day's filings since the last one. A correcting amendment replaces the lines it restates. Every row links to its filing. None of this is advice: insiders sell for many reasons, and buy for fewer.

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