RABER RYAN F (EVP - Sales & Marketing) sold 14.1% of their position (15K shares) of MAYVILLE ENGINEERING COMPANY, INC. on the open market

Open‑market sale worth $250.2K — a moderate reduction. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 2 sales

RABER RYAN F

Filed: 11/26/2025ACC: 0000897069-25-001738

InsiderRABER RYAN FCIK 1775978

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IssuerMAYVILLE ENGINEERING COMPANY, INC.CIK 1766368

Officer· EVP - Sales & Marketing

Since May 2019

-15K

Net shares

Net seller

$250.2K

Total sold

Open market trades

0B · 2S

Total transactions

15K disposed

Non-Derivative Transactions2

Common Stock

Direct

S · Sale

−12.50K

Price / share

$16.69

Trade value

$208.63K

% of position

11.8%

11/25/2025

106.02K→93.52K

Common Stock

Direct

S · Sale

−2.50K

Price / share

$16.63

Trade value

$41.56K

% of position

2.7%

11/25/2025

93.52K→91.02K

Total

Net shares

−15K

Net value

-$250.19K

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Common Stock Direct	11/25/2025	S · Sale	−12.50K	$16.69	$208.63K	11.8%	106.02K	93.52K
Common Stock Direct	11/25/2025	S · Sale	−2.50K	$16.63	$41.56K	2.7%	93.52K	91.02K
Total			−15K		-$250.19K

Derivative Transactions0

No derivative transactions reported

Non-Derivative Holdings (Post-Transaction)1

Common Stock

Indirect

Shares owned26.29K

Total

26.29K indirect26.29K

Security Title	Shares Owned	Ownership Type
Common Stock	26.29K	Indirect
Total	26.29K	26.29K indirect

Derivative Holdings (Post-Transaction)6

Stock Option (right to buy)

Direct

Underlying security

Common Stock

Underlying shares

27.59K

Shares owned

27.59K

Exercise price

Expiration

—

Exercise window

—

Stock Option (right to buy)

Direct

Underlying security

Common Stock

Underlying shares

43.29K

Shares owned

43.29K

Exercise price

14.01

Expiration

—

Exercise window

—

Restricted Stock Units

Direct

Underlying security

Common Stock

Underlying shares

35.30K

Shares owned

35.30K

Exercise price

Expiration

—

Exercise window

—

Stock Option (right to buy)

Direct

Underlying security

Common Stock

Underlying shares

44.72K

Shares owned

44.72K

Exercise price

16.22

Expiration

—

Exercise window

—

Stock Option (right to buy)

Direct

Underlying security

Common Stock

Underlying shares

77.43K

Shares owned

77.43K

Exercise price

10.32

Expiration

—

Exercise window

—

Restricted Stock Units

Direct

Underlying security

Common Stock

Underlying shares

37.35K

Shares owned

37.35K

Exercise price

Expiration

—

Exercise window

—

Total

Underlying

265.69K

Owned

265.69K

Security	Underlying	Exercise Price	Exercise Window	Expiration	Underlying Shares	Shares Owned
Stock Option (right to buy) Direct	Common Stock	17	—	—	27.59K	27.59K
Stock Option (right to buy) Direct	Common Stock	14.01	—	—	43.29K	43.29K
Restricted Stock Units Direct	Common Stock	0	—	—	35.30K	35.30K
Stock Option (right to buy) Direct	Common Stock	16.22	—	—	44.72K	44.72K
Stock Option (right to buy) Direct	Common Stock	10.32	—	—	77.43K	77.43K
Restricted Stock Units Direct	Common Stock	0	—	—	37.35K	37.35K
Total					265.69K	265.69K