| Insider | Role | Shares | Value | Buys | Sells |
|---|---|---|---|---|---|
| Date | Ticker | Insider | Role | Type | Shares | Price | Value | Chg% | SEC |
|---|---|---|---|---|---|---|---|---|---|
| Insider | Role | Shares | Value | Buys | Sells |
|---|---|---|---|---|---|
| Date | Ticker | Insider | Role | Type | Shares | Price | Value | Chg% | SEC |
|---|---|---|---|---|---|---|---|---|---|
SVP, GC & Secretary | SVP, Corp. Development & GC | GC & Secretary
1 company
Sean P Leuba is SVP, GC & Secretary at MEC. Sean P Leuba's net worth is not public. Form 4 filings only show shares in the companies where this person is an insider; those holdings are worth an estimated $95K at current prices.
Historically, Sean P Leuba's trades have earned a middling insider score of 61/100 across 4 rated trades. Over a 12-month horizon, all 3 of those trades were profitable, with an average 12-month return of +33.3%.
The MEC filings lean toward selling, a net 19,553 shares.
Sean P Leuba has 15 Form 4 filings on record from January 2023 to August 2026, all as SVP, GC & Secretary at Mayville Engineering (MEC), 2023–2026.
The 26 reported transactions were 7 option exercises, 6 tax withholdings, 6 option or other derivative awards and 3 open-market sales, plus smaller numbers of other types.
Counted by filing, the open-market trades come to 3 purchases worth about $37K and 2 sales worth about $503K.
The largest open-market purchase was 1,000 shares of MEC at an average $16.13 on November 7, 2024, about $16K. Twelve months later MEC was up 1%.
The largest open-market sale was 12,855 shares of MEC at an average $25.44 on August 6, 2026, about $327K.
Neither of the two sales since April 2023 was marked as made under a Rule 10b5-1 trading plan.
| Date | Ticker | Role | Type | Shares | Price | Value | Chg% | 3M | 12M | SEC |
|---|---|---|---|---|---|---|---|---|---|---|
| Aug 6, 2026 | MEC Mayville Engineering Company, Inc. | SVP, GC & Secretary | Sell | 12,855 | $25.44 | $327,031.20 | -66.0% | - | - | |
| Mar 5, 2026 | MEC Mayville Engineering Company, Inc. | GC & Secretary | Sell | 9,198 | $19.15 | $176,164.38 | -43.7% | +72.7% | - | |
| Aug 11, 2025 | MEC Mayville Engineering Company, Inc. | SVP, Corp. Development & GC | Buy | 500 | $13.56 | $6,780.00 | +25.0% | +23.2% | +64.5% | |
| Mar 6, 2025 | MEC Mayville Engineering Company, Inc. | SVP, Corp. Development & GC | Buy | 1,000 | $14.18 | $14,179.00 | +100.0% | +10.0% | +35.0% | |
| Nov 7, 2024 | MEC Mayville Engineering Company, Inc. | SVP, Corp. Development & GC | Buy | 1,000 | $16.13 | $16,125.00 | New | -3.8% | +0.5% |