Rachele M. Lehr - 08 Aug 2025 Form 4 Insider Report for Mayville Engineering Company, Inc. (MEC)

Role
Chief Financial Officer
Signature
/s/ Russell E. Ryba, Attorney-in-Fact for Rachele M. Lehr
Issuer symbol
MEC
Transactions as of
08 Aug 2025
Net transactions value
+$19,712
Form type
4
Filing time
11 Aug 2025, 17:58:26 UTC
Previous filing
18 Mar 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Lehr Rachele Marie Chief Financial Officer 135 SOUTH 84TH STREET, SUITE 300, MILWAUKEE /s/ Russell E. Ryba, Attorney-in-Fact for Rachele M. Lehr 11 Aug 2025 0001751718

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction MEC Common Stock Purchase $19,712 +1,400 +7.2% $14.08 20,761 08 Aug 2025 Direct

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
holding MEC Restricted Stock Units 17,120 08 Aug 2025 Common Stock 17,120 $0.000000 Direct F1
holding MEC Restricted Stock Units 17,422 08 Aug 2025 Common Stock 17,422 $0.000000 Direct F2
holding MEC Stock Option (right to buy) 24,814 08 Aug 2025 Common Stock 24,814 $14.12 Direct F3
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 The restricted stock units will vest 1/3 on each of March 15, 2025, 2026 and 2027.
F2 The restricted stock units will vest 1/3 on each of March 15, 2026, 2027 and 2028.
F3 The options will vest 50% on each of February 28, 2024 and February 28, 2025.