InsiderTrades

Form 4 for MEC Mayville Engineering Company, Inc.

Accepted 2026-03-17 00:00:00 ET · period of report 2026-03-15 · accession 0000897069-26-000710 · 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
D 2026-03-17 2026-03-15 MEC Nichols Craig D SVP, Ops, Supply Chain M - OptEx $0.00 +5,808 5,808 New $0
D 2026-03-17 2026-03-15 MEC Nichols Craig D SVP, Ops, Supply Chain F - Tax $16.67 -1,662 4,146 -29% -$27.7K
D 2026-03-17 2026-03-15 MEC Nichols Craig D SVP, Ops, Supply Chain M - OptEx $0.00 -5,808 11.6K -33% $0
D 2026-03-17 2026-03-15 MEC Nichols Craig D SVP, Ops, Supply Chain A - Grant $0.00 +15.0K 15.0K New $0

Purchase Sale Sale after option exercise All abbreviations

Every reported transaction

#TableSecurityDateCodeA/DSharesPriceOwned afterOwnExercise / expiryUnderlyingFootnotes
1 Common Common Stock 2026-03-15 M A 5,808 $0.00 5,808 D — —
2 Common Common Stock 2026-03-15 F D 1,662 $16.67 4,146 D — —
3 Derivative Restricted Stock Units 2026-03-15 M D 5,808 $0.00 11,614 D $0.00 · — to — 5,808 Common Stock (F1) The restricted stock units will vest 1/3 on each of March 15, 2026, 2027 and 2028.
4 Derivative Restricted Stock Units 2026-03-15 A A 14,998 $0.00 14,998 D $0.00 · — to — 14,998 Common Stock (F2) The restricted stock units will vest 1/3 on each of March 15, 2027, 2028 and 2029.