BlackRock, Inc. filed a Schedule 13G with the SEC on October 27, 2026, disclosing beneficial ownership of 1,605,585 shares of common stock in Mayville Engineering Company, Inc. as of September 30, 2026.

Key Highlights

  • Aggregate beneficial ownership: BlackRock reported beneficially owning 1,605,585 shares of Mayville Engineering common stock, representing 6.3% of the class.
  • Sole voting power: BlackRock holds sole power to vote or direct the vote of 1,568,893 shares.
  • Sole dispositive power: BlackRock holds sole power to dispose of or direct the disposition of 1,605,585 shares.
  • Shared voting and dispositive power: Both shared voting and shared dispositive power are reported as 0 shares.
  • Triggering event date: The filing is based on a September 30, 2026 event date.
  • Filer type: BlackRock is identified as a parent holding company (type "HC"), incorporated in Delaware, with principal offices at 50 Hudson Yards, New York, NY 10001.

BlackRock's Schedule 13G Filing on Mayville Engineering Common Stock

BlackRock, Inc. filed a Schedule 13G disclosing that certain of its business units collectively hold beneficial ownership of 1,605,585 shares of Mayville Engineering Company, Inc. common stock (CUSIP 578605107), equal to 6.3% of the outstanding class. The filing was signed by Spencer Fleming, Managing Director, on October 27, 2026, and reflects holdings as of September 30, 2026. The issuer's principal executive offices are located at 135 S. 84th Street, Suite 300, Milwaukee, WI 53214.

According to the filing, the statement "reflects the securities beneficially owned, or deemed to be beneficially owned, by certain business units (collectively, the 'Reporting Business Units') of BlackRock, Inc. and its subsidiaries and affiliates." The filing further states that it "does not include securities, if any, beneficially owned by other business units whose beneficial ownership of securities are disaggregated from that of the Reporting Business Units" in accordance with SEC Release No. 34-39538 (January 12, 1998).

On Item 6, the filing discloses that "various persons have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of the common stock of Mayville Engineering Company, Inc.," but states that no single person's interest exceeds five percent of total outstanding common shares. The filing certifies that the securities "were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer."

What Was Disclosed

BlackRock, Inc. reported a 6.3% beneficial ownership position, comprising 1,605,585 shares of Mayville Engineering Company common stock, with sole voting power over 1,568,893 shares and sole dispositive power over the full 1,605,585 shares, as of September 30, 2026.