REDDY JAGADEESH A (President & CEO) sold 12.1% of their position (21.80K shares) of MAYVILLE ENGINEERING COMPANY, INC. on the open market

Open‑market sale worth $565.1K — a moderate reduction. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 2 sales

REDDY JAGADEESH A

Filed: 5/12/2026ACC: 0000897069-26-001076

InsiderREDDY JAGADEESH ACIK 1937748

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IssuerMAYVILLE ENGINEERING COMPANY, INC.CIK 1766368

Officer· President & CEO

Since Jul 2022

-21.80K

Net shares

Net seller

$565.1K

Total sold

Open market trades

0B · 2S

Total transactions

21.80K disposed

Non-Derivative Transactions2

Common Stock

Direct

S · Sale

−10.33K

Price / share

$25.72

Trade value

$265.74K

% of position

5.7%

5/7/2026

180.18K→169.85K

Common Stock

Direct

S · Sale

−11.46K

Price / share

$26.11

Trade value

$299.33K

% of position

6.7%

5/7/2026

169.85K→158.39K

Total

Net shares

−21.80K

Net value

-$565.06K

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Common Stock Direct	5/7/2026	S · Sale	−10.33K	$25.72	$265.74K	5.7%	180.18K	169.85K
Common Stock Direct	5/7/2026	S · Sale	−11.46K	$26.11	$299.33K	6.7%	169.85K	158.39K
Total			−21.80K		-$565.06K

Derivative Transactions0

No derivative transactions reported

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)4

Restricted Stock Units

Direct

Underlying security

Common Shares

Underlying shares

36.32K

Shares owned

36.32K

Exercise price

Expiration

—

Exercise window

—

Restricted Stock Units

Direct

Underlying security

Common Shares

Underlying shares

74.99K

Shares owned

74.99K

Exercise price

Expiration

—

Exercise window

—

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

—

Restricted Stock Units

Direct

Underlying security

Common Shares

Underlying shares

55.28K

Shares owned

55.28K

Exercise price

Expiration

—

Exercise window

—

Total

Underlying

255.49K

Owned

255.49K

Security	Underlying	Exercise Price	Exercise Window	Expiration	Underlying Shares	Shares Owned
Restricted Stock Units Direct	Common Shares	0	—	—	36.32K	36.32K
Restricted Stock Units Direct	Common Shares	0	—	—	74.99K	74.99K
Stock Option (right to buy) Direct	Common Shares	16.22	—	—	88.90K	88.90K
Restricted Stock Units Direct	Common Shares	0	—	—	55.28K	55.28K
Total					255.49K	255.49K