As of the latest Form 4 filed Jun 12, 2026.
What Mayville Engineering Co Inc insiders — officers, directors and 10% owners — have bought and sold in their own stock, straight from their SEC Form 4 filings. Values are shares × the reported transaction price where both are disclosed.
Buys plotted up, sells down; bar height is the disclosed dollar value (shares × reported price). Our Form 4 history is only complete from mid-2026, so early months are sparse — the series fills in as more filings land. Open-market purchases and sales only.
Newest filing first — the 16 most recent filings for MEC.
| Filed | Trade date | Insider | Transaction | Shares | Price | Value | 10b5-1 | Filing |
|---|---|---|---|---|---|---|---|---|
| 2026-06-12 | 2026-06-11 | Reddy Jagadeesh A President & CEO | SSale | −15.7K | $35.05 | $550K | Yes (planned) | Form 4 ↗ |
| 2026-06-10 | 2026-06-08 | Reddy Jagadeesh A President & CEO | SSale | −1.30K | $35.01 | $45.5K | Yes (planned) | Form 4 ↗ |
| 2026-06-02 | 2026-06-01 | Reddy Jagadeesh A President & CEO | SSale | −17.9K | $30.00 | $538K | Yes (planned) | Form 4 ↗ |
| 2026-05-27 | 2026-05-26 | Raber Ryan F EVP - Strategy, Sales & Mktg | SSale | −20.0K | $26.00 | $520K | No | Form 4 ↗ |
| 2026-05-12 | 2026-05-08 | Leuba Sean P SVP, GC & Secretary | GGift | +1.01K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-05-11 | 2026-05-07 | Reddy Jagadeesh A President & CEO | SSale | −11.5K | $26.11 | $299K | Yes (planned) | Form 4 ↗ |
| 2026-05-11 | 2026-05-07 | Reddy Jagadeesh A, President & CEO | SSale | −10.3K | $25.72 | $266K | Yes (planned) | Form 4 ↗ |
| 2026-04-23 | 2026-04-21 | Wingfield Tania Director | MExercise | +5.95K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-04-23 | 2026-04-21 | McCormick Robert L Director | MExercise | +10.3K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-04-23 | 2026-04-21 | Fisher Steven L Director | MExercise | +10.3K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-04-23 | 2026-04-21 | Fisher Steven L, Director | MExercise | +14.5K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-04-23 | 2026-04-21 | Fisher Steven L, Director | MExercise | +19.5K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-04-23 | 2026-04-21 | Fisher Steven L, Director | MExercise | +5.88K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-04-23 | 2026-04-21 | Christen Timothy L Director | MExercise | +12.4K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-09 | 2026-03-05 | Leuba Sean P GC & Secretary | SSale | −6.70K | $18.81 | $126K | No | Form 4 ↗ |
| 2026-03-09 | 2026-03-05 | Leuba Sean P, GC & Secretary | SSale | −2.50K | $20.07 | $50.2K | No | Form 4 ↗ |
Insiders — a company’s officers, directors and holders of more than 10% of its stock — must report any trade in that stock to the SEC on a Form 4 within two business days. Each row here is one transaction from those filings.
The transaction code tells you what happened: Purchase (P) and Sale (S) are open-market trades — the ones markets watch most; Award (A) is a granted stock or unit, Option exercise (M) converts options into shares, and Gift (G) is a transfer for no consideration. Awards, exercises and gifts are largely compensation or administrative, not a directional bet.
One caveat on sales: many are made under a Rule 10b5-1 plan scheduled months in advance, so a sale is not automatically a bearish signal. Insider activity is a noisy input — read it alongside the filings, not on its own.
See also MEC’s full analysis or the market-wide insider trading feed. The tabs above jump to MEC’s other SEC data.
Source: SEC Form 4 filings for MEC, parsed from EDGAR. Transaction prices are as reported in the filing — SEC public-domain data, not market quotes. Values are shares × reported price where both are disclosed; grants and gifts often carry no price. A delayed record of what insiders reported, not a live position or a recommendation.
Research and education only — not financial advice. TENKis not a registered investment adviser or broker-dealer and gives no personalized advice. Every call is impersonal — identical for all users, generated on a schedule from SEC filings plus a delayed/third-party price feed — may be wrong or out of date, and is not a recommendation to buy or sell any security. The operator and an affiliated trading operation may hold or trade the securities TENK rates; see Disclosures. Past performance does not guarantee future results. Do your own research.