Results of Operations and Financial Condition. On August 4, 2026, the Company announced financial results for the second quarter ended June 30, 2026. A copy of the press release announcing this event is included in this Form 8-K as Exhibit 99.1.

Entry into a Material Definitive Agreement On July 2, 2026, Core Molding Technologies, Inc. (the “Company”) entered into a Third Amendment to Credit Agreement (the “Amendment”) with The Huntington National Bank, as administrative agent, and the lenders party thereto. The Amendment modifies the Company’s existing Credit Agreement dated July 22, 2022, as previously amended. The Amendment does not constitute a refinancing, novation, or repayment of the existing secured obligations. Material term…

Director — Eric Palomaki: David L. Duvall resigned from the board, and Eric Palomaki was appointed to fill the vacancy.

President & Chief Executive Officer — David L. Duvall: Mr. Duvall resigned due to his previously announced retirement.

CEO — David L. Duvall: The CEO is transitioning to a part-time advisory role with a defined compensation arrangement.

Results of Operations and Financial Condition. On May 7, 2026, the Company announced financial results for the first quarter ended March 31, 2026. A copy of the press release announcing this event is included in this Form 8-K as Exhibit 99.1.

Other Events On March 11 , 2026, Core Molding Technologies, Inc. (the “Company”) issued a press release announcing that its Board of Directors has approved an increase to its existing stock repurchase program authorizing the Company to repurchase up to an additional approximately $6 ,500,000 of its outstanding shares of common stock. As of the date hereof there was approximately $1,000,000 of remaining repurchase authority under the stock repurchase program, bringing the total repurchase auth…

Results of Operations and Financial Condition. On March 10, 2026, the Company announced financial results for the year ended December 31, 2025. A copy of the press release announcing this event is included in this Form 8-K as Exhibit 99.1.

Entry into a Material Definitive Agreement On February 10, 2026, Core Molding Technologies, Inc. (the “Company”) entered into a First Amendment to Credit Agreement (the “Amendment”) with The Huntington National Bank, as administrative agent, and the lenders party thereto. The Amendment was executed on February 10, 2026 and became effective as of December 31, 2025. The Amendment modifies the Company’s existing Credit Agreement dated July 22, 2022, as previously amended. The Amendment does not…

Results of Operations and Financial Condition. On November 4, 2025 , the Company announced financial results for the third quarter ended September 30, 2025. A copy of the press release announcing this event is included in this Form 8-K as Exhibit 99.1.

President and Chief Executive Officer — David L. Duvall: CEO David L. Duvall is retiring, and Eric L. Palomaki will succeed him as President and CEO.

Results of Operations and Financial Condition. On August 5, 2025, the Company announced financial results for the second quarter ended June 30, 2025. A copy of the press release announcing this event is included in this Form 8-K as Exhibit 99.1.

Results of Operations and Financial Condition. On May 8, 2025, the Company announced financial results for the first quarter ended March 31, 2025. A copy of the press release announcing this event is included in this Form 8-K as Exhibit 99.1.

Results of Operations and Financial Condition. On March 11, 2025, the Company announced financial results for the year ended December 31, 2024. A copy of the press release announcing this event is included in this Form 8-K as Exhibit 99.1.

Chief Financial Officer — John P. Zimmer: Mr. Zimmer is retiring and being succeeded by Alex J. Panda.

Results of Operations and Financial Condition. On November 5, 2024, the Company announced financial results for the third quarter ended September 30, 2024. A copy of the press release announcing this event is included in this Form 8-K as Exhibit 99.1.

Results of Operations and Financial Condition. On August 6, 2024, the Company announced financial results for the second quarter ended June 30, 2024. A copy of the press release announcing this event is included in this Form 8-K as Exhibit 99.1.

Results of Operations and Financial Condition. On May 7, 2024, the Company announced financial results for the first quarter ended March 31, 2024. A copy of the press release announcing this event is included in this Form 8-K as Exhibit 99.1.

The filing pertains to the approval of compensatory agreements for an equity incentive plan.

Results of Operations and Financial Condition. On March 12, 2024, the Company announced financial results for the year ended December 31, 2023. A copy of the press release announcing this event is included in this Form 8-K as Exhibit 99.1.

Other Events On March 11 , 2024, Core Molding Technologies, Inc. (the “Company”) issued a press release announcing that its Board of Directors has approved a stock repurchase program authorizing the Company to repurchase up to $ 7,500,000 of its outstanding shares of common stock. Repurchases of shares of common stock under the stock repurchase program will be made in the open market and in accordance with applicable securities laws. The stock repurchase program does not obligate the Company…

Entry into a Material Definitive Agreement On March 7, 2024, Core Molding Technologies, Inc. (the “Company”) entered into a First Amendment (the “First Amendment”) to the Credit Agreement dated July 22, 2022 (the “Credit Agreement”) with The Huntington National Bank, as administrative agent, sole lead arranger and sole bookrunner, and the lenders from time-to-time party thereto. Unless otherwise defined herein, defined terms shall have the meanings set forth in the Credit Agreement. The First…

Results of Operations and Financial Condition. On November 7, 2023, the Company announced financial results for the third quarter ended September 30, 2023. A copy of the press release announcing this event is included in this Form 8-K as Exhibit 99.1.

Director — Salvador Minarro-Villalobos: Appointment of Salvador Minarro-Villalobos as an independent member of the Board of Directors.

Results of Operations and Financial Condition. On August 8, 2023, the Company announced financial results for the second quarter ended June 30, 2023. A copy of the press release announcing this event is included in this Form 8-K as Exhibit 99.1.