Mayville Engineering SEC Filings

Mayville Engineering Company (MEC) director reports equity grant. Director Tania Wingfield filed a Form 4 showing an acquisition of 5,949 Director Restricted Stock Units on 11/07/2025 at $0. Each unit corresponds to one share of common stock, for a total underlying 5,949 shares.

The filing states the RSUs will vest 100% at the earlier of one year or the next annual shareholder meeting. Following the reported transaction, 5,949 derivative securities were beneficially owned on a direct basis.

Mayville Engineering Company (MEC) reported Q3 results showing higher revenue but a net loss. Net sales were $144.3 million versus $135.4 million a year ago, while net loss was $2.7 million (vs. income of $3.0 million). Year to date, net sales were $412.2 million compared with $460.3 million in 2024, and the company posted a nine‑month net loss of $3.8 million.

MEC closed the Accu‑Fab acquisition on July 1 for $141.2 million net consideration, adding $47.6 million of goodwill and $69.2 million of definite‑lived intangibles. Accu‑Fab contributed $21.2 million of net sales since closing, and helped expand the data center & critical power end market to $22.6 million in Q3 (from $4.7 million a year earlier).

Balance sheet and cash flow reflect deal financing: revolver borrowings were $211.9 million (vs. $79.7 million at year‑end), with a total leverage ratio of 3.47x (covenant ≤4.00x) and interest coverage of 6.23x (covenant ≥3.00x). Operating cash flow was $25.2 million for nine months; investing used $148.5 million mainly for the acquisition. MEC also began a restructuring plan on August 5 with expected charges of $5–$7 million; $0.6 million was recorded in Q3.

Mayville Engineering Company, Inc. filed a Form 8-K to report that it released financial results for its third quarter ended September 30, 2025. The company states that these results were announced in a press release dated November 4, 2025.

The press release describing the third-quarter performance is furnished as Exhibit 99 and incorporated by reference, meaning detailed figures and commentary are contained in that separate document rather than in the body of this report.

Mayville Engineering Company, Inc. (MEC): Schedule 13G discloses that Hilve Holdings Ltd and Mikhail Stiskin beneficially own 1,067,170 shares of MEC common stock, representing 5.3% of the class. Each reports sole voting and dispositive power over the same 1,067,170 shares, with no shared power.

The percentage is calculated based on 20,317,825 shares outstanding as of August 1, 2025, as cited from MEC’s Form 10-Q. Stiskin, as the sole shareholder of Hilve Holdings Ltd, may be deemed the beneficial owner of the shares held by Hilve Holdings. The filing includes a standard certification that the securities were not acquired for the purpose of changing or influencing control.

Mayville Engineering Company, Inc. filed an amendment to a prior current report to add detailed financial information related to its completed acquisition of Accu-Fab, LLC. The original report had disclosed the closing of the deal but omitted Accu-Fab’s financial statements and combined pro forma figures under permitted timing rules.

This amendment supplies audited and unaudited historical financial statements for Accu-Fab and unaudited pro forma consolidated combined financial information for Mayville Engineering and Accu-Fab. These exhibits are intended to help investors see how the businesses would have looked on a combined basis over recent periods. Other disclosures from the original report remain unchanged.

Mayville Engineering Company, Inc. filed an amendment to a prior current report to add detailed financial information related to its completed acquisition of Accu-Fab, LLC. The original report had disclosed the closing of the deal but omitted Accu-Fab’s financial statements and combined pro forma figures under permitted timing rules.

This amendment supplies audited and unaudited historical financial statements for Accu-Fab and unaudited pro forma consolidated combined financial information for Mayville Engineering and Accu-Fab. These exhibits are intended to help investors see how the businesses would have looked on a combined basis over recent periods. Other disclosures from the original report remain unchanged.

Mayville Engineering Company, Inc. filed an amendment to a prior current report to add detailed financial information related to its completed acquisition of Accu-Fab, LLC. The original report had disclosed the closing of the deal but omitted Accu-Fab’s financial statements and combined pro forma figures under permitted timing rules.

This amendment supplies audited and unaudited historical financial statements for Accu-Fab and unaudited pro forma consolidated combined financial information for Mayville Engineering and Accu-Fab. These exhibits are intended to help investors see how the businesses would have looked on a combined basis over recent periods. Other disclosures from the original report remain unchanged.

Mayville Engineering Company, Inc. filed an amendment to a prior current report to add detailed financial information related to its completed acquisition of Accu-Fab, LLC. The original report had disclosed the closing of the deal but omitted Accu-Fab’s financial statements and combined pro forma figures under permitted timing rules.

This amendment supplies audited and unaudited historical financial statements for Accu-Fab and unaudited pro forma consolidated combined financial information for Mayville Engineering and Accu-Fab. These exhibits are intended to help investors see how the businesses would have looked on a combined basis over recent periods. Other disclosures from the original report remain unchanged.

Mayville Engineering Company, Inc. senior vice president Sean P. Leuba reported an open-market purchase of common stock. On August 11, 2025, he indirectly bought 500 shares of common stock at $13.56 per share through an ESOP and/or 401(k) plan, bringing that indirect plan holding to 2,500 shares.

In addition, he holds directly 18,539 shares of common stock, 14,526 restricted stock units that vest in thirds on March 15 of 2025, 2026, and 2027, and 13,938 restricted stock units that vest in thirds on March 15 of 2026, 2027, and 2028. He also holds stock options for 21,552 shares at an exercise price of $16.22, vesting 50% on February 28, 2024 and 50% on February 28, 2025.

Rachele M. Lehr, Chief Financial Officer of Mayville Engineering Company (MEC), purchased 1,400 shares of MEC common stock on 08/08/2025 at $14.08 per share, increasing her direct holdings to 20,761 shares. The filing also reports that Ms. Lehr directly beneficially owns restricted stock units (17,120 and 17,422) that vest in staged increments (one grant vests one-third on March 15 of 2025, 2026 and 2027; the other vests one-third on March 15 of 2026, 2027 and 2028).

The report shows a stock option covering 24,814 shares with an exercise price of $14.12 and an expiration date of 02/28/2033; the option vesting schedule was 50% on 02/28/2024 and 50% on 02/28/2025. The transaction reported is a direct purchase and the filing lists the post-transaction and derivative holdings explicitly.

Form 4 filed for Mayville Engineering Company, Inc. (MEC) reporting insider transactions by Jagadeesh A. Reddy, President & CEO and Director.

On 08/07/2025 Mr. Reddy acquired 7,500 shares of MEC common stock at $14.06. Following the reported transaction he beneficially owns 146,285 shares directly. Indirect holdings shown: 2,300 shares via ESOP/401(k) and 380 by his daughter.

• Derivative holdings (direct): Restricted Stock Units of 72,633 and 82,927; Stock Options for 88,901 shares at an exercise price of $16.22 (expiration listed 02/28/2033).
• Vesting schedules: RSU tranches vest 1/3 on listed March 15 dates; options vest 50% on 02/28/2024 and 02/28/2025 per the form.

Form signed by Russell E. Ryba as Attorney-in-Fact on 08/08/2025.