Form 4 for MEC Mayville Engineering Company, Inc.
Accepted 2026-03-17 00:00:00 ET · period of report 2026-03-15 · accession 0000897069-26-000707 · SEC index · Original document
Summary rows
Aggregated the way they appear in lists: one row per insider, transaction code and security table.
| X | Filed | Traded | Ticker | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|
| DM | 2026-03-17 | 2026-03-15 | MEC | Leuba Sean P | SVP, GC, Corp. Development | M - OptEx | $0.00 | +11.9K | 23.8K | +101% | $0 |
| D | 2026-03-17 | 2026-03-15 | MEC | Leuba Sean P | SVP, GC, Corp. Development | F - Tax | $16.67 | -5,277 | 18.5K | -22% | -$88.0K |
| DM | 2026-03-17 | 2026-03-15 | MEC | Leuba Sean P | SVP, GC, Corp. Development | M - OptEx | $0.00 | -11.9K | 9,292 | -56% | $0 |
| D | 2026-03-17 | 2026-03-15 | MEC | Leuba Sean P | SVP, GC, Corp. Development | A - Grant | $0.00 | +13.5K | 13.5K | New | $0 |
Purchase Sale Sale after option exercise All abbreviations
Every reported transaction
| # | Table | Security | Date | Code | A/D | Shares | Price | Owned after | Own | Exercise / expiry | Underlying | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Common | Common Stock | 2026-03-15 | M | A | 7,263 | $0.00 | 19,104 | D | — | — | |
| 2 | Common | Common Stock | 2026-03-15 | M | A | 4,646 | $0.00 | 23,750 | D | — | — | |
| 3 | Common | Common Stock | 2026-03-15 | F | D | 5,277 | $16.67 | 18,473 | D | — | — | |
| 4 | Derivative | Restricted Stock Units | 2026-03-15 | M | D | 7,263 | $0.00 | 7,263 | D | $0.00 · — to — | 7,263 Common Stock | (F1) The restricted stock units will vest 1/3 on each of March 15, 2025, 2026 and 2027. |
| 5 | Derivative | Restricted Stock Units | 2026-03-15 | A | A | 13,498 | $0.00 | 13,498 | D | $0.00 · — to — | 13,498 Common Stock | (F3) The restricted stock units will vest 1/3 on each of March 15, 2027, 2028 and 2029. |
| 6 | Derivative | Restricted Stock Units | 2026-03-15 | M | D | 4,646 | $0.00 | 9,292 | D | $0.00 · — to — | 4,646 Common Stock | (F2) The restricted stock units will vest 1/3 on each of March 15, 2026, 2027 and 2028. |