Mayville Engineering Company, Inc. (MEC) Institutional Ownership & Insider Trading

154 institutions reported holding Mayville Engineering Company, Inc. shares in 13F filings for the quarter ended 2026-06-30, according to EquiReason's reading of their SEC filings. 14 insider trades on Form 4 since 2025-10-01.

Source: SEC EDGAR filings · figures as of 2026-06-30 · read by EquiReason

MECMayville Engineering Company, Inc.Follow MEC — free

Metal Fabrication · Industrials

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Market cap: 324.1M
P/E TTM: —
Dividend yield: —
52-week: —
Next earnings: 3 Nov, in 10 days

Institutions · all 13F filers

quarter to 30 Jun 2026 · filers in both quarters

154 institutions held 84.5% of the shares. Across filers that reported both quarters, shares held changed +46.1%.

Largest moves, shares (millions)

Institutional flow by quarter

net shares added or trimmed, millions · filers in both quarters

Quarter	Holders	Shares held, M	Change	Increased	New	Decreased	Closed
Jun 26	154	22	+46.1%	43	51	36	15
Mar 26	123	14	+2.2%	33	18	38	19
Dec 25	121	14	+2.5%	32	26	40	10
Sep 25	102	13	+4.9%	40	9	26	20
Jun 25	111	13	+1.7%	39	13	31	17
Mar 25	116	12	-0.4%	32	14	39	10
Dec 24	113	12	+6.0%	42	14	24	20
Sep 24	116	12	+8.4%	43	30	20	14

Mayville Engineering Company, Inc. — questions

Who owns Mayville Engineering Company, Inc. stock?: 154 institutions reported Mayville Engineering Company, Inc. shares in 13F filings for the quarter ended 2026-06-30. The largest: Portolan Capital Management, LLC (5.1%), FMR LLC (5.0%), BlackRock, Inc. (4.6%).
Are Mayville Engineering Company, Inc. insiders buying or selling?: 14 insider trades on Form 4 since 2025-10-01; the full list, with dates, people and plan status, is on this page.

Every figure on this page comes from Mayville Engineering Company, Inc.'s own SEC filings — see them on SEC EDGAR. Price data is licensed and shown only inside the product.

How these figures are read: methodology · EquiReason.

Important information. Figures on this page are taken from filings submitted to the U.S. Securities and Exchange Commission (SEC) and processed automatically by EquiReason. They may contain errors, omissions or delays, and EquiReason makes no representation or warranty as to their accuracy, completeness or timeliness. Always verify figures against the original filing on SEC EDGAR before relying on them.

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