REDDY JAGADEESH A (President & CEO) exercised options at MAYVILLE ENGINEERING COMPANY, INC.

Option exercise — a mechanical event triggered by vesting or expiry. Not a discretionary conviction trade.

M · 2 exercises

REDDY JAGADEESH A

Filed: 3/17/2026ACC: 0000897069-26-000717

InsiderREDDY JAGADEESH ACIK 1937748

→

IssuerMAYVILLE ENGINEERING COMPANY, INC.CIK 1766368

Officer· President & CEO

Since Jul 2022

+44.92K

Net shares

Net buyer

$501.1K

Total sold

Open market trades

0B · 0S

Total transactions

138.95K acquired · 94.02K disposed

Non-Derivative Transactions3

Common Stock

Direct

M · Option Exercise

+36.32K

Price / share

—

Trade value

—

% of position

24.8%

3/15/2026

146.28K→182.60K

Common Stock

Direct

M · Option Exercise

+27.64K

Price / share

—

Trade value

—

% of position

15.1%

3/15/2026

182.60K→210.25K

Common Stock

Direct

F · Tax Withholding

−30.06K

Price / share

$16.67

Trade value

$501.13K

% of position

14.3%

3/15/2026

210.25K→180.18K

Total

Net shares

+33.90K

Net value

-$501.13K

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Common Stock Direct	3/15/2026	M · Option Exercise	+36.32K	—	—	24.8%	146.28K	182.60K
Common Stock Direct	3/15/2026	M · Option Exercise	+27.64K	—	—	15.1%	182.60K	210.25K
Common Stock Direct	3/15/2026	F · Tax Withholding	−30.06K	$16.67	$501.13K	14.3%	210.25K	180.18K
Total			+33.90K		-$501.13K

Derivative Transactions3

Restricted Stock Units

Direct

M · Option Exercise

Converts to

Common Shares

36.32K shares

−36.32K

Strike price

Held after

36.32K

Exercisable

—

3/15/2026

Restricted Stock Units

Direct

M · Option Exercise

Converts to

Common Shares

27.64K shares

−27.64K

Strike price

Held after

55.28K

Exercisable

—

3/15/2026

Restricted Stock Units

Direct

A · Award

Converts to

Common Shares

74.99K shares

+74.99K

Strike price

Held after

74.99K

Exercisable

—

3/15/2026

Security	Converts To	Date	Type	Shares	Exercisable	Held After
Restricted Stock Units Direct	Common Shares36.32K shares	3/15/2026	M · Option Exercise	−36.32K	—	36.32K
Restricted Stock Units Direct	Common Shares27.64K shares	3/15/2026	M · Option Exercise	−27.64K	—	55.28K
Restricted Stock Units Direct	Common Shares74.99K shares	3/15/2026	A · Award	+74.99K	—	74.99K

Non-Derivative Holdings (Post-Transaction)2

Common Stock

Indirect

Shares owned2.30K

Common Stock

Indirect

Shares owned380.00

Total

2.68K indirect2.68K

Security Title	Shares Owned	Ownership Type
Common Stock	2.30K	Indirect
Common Stock	380.00	Indirect
Total	2.68K	2.68K indirect

Derivative Holdings (Post-Transaction)1

Stock Option (right to buy)

Direct

Underlying security

Common Shares

Underlying shares

88.90K

Shares owned

88.90K

Exercise price

16.22

Expiration

—

Exercise window

—

Total

Underlying

88.90K

Owned

88.90K

Security	Underlying	Exercise Price	Exercise Window	Expiration	Underlying Shares	Shares Owned
Stock Option (right to buy) Direct	Common Shares	16.22	—	—	88.90K	88.90K
Total					88.90K	88.90K