Suresh Krishna - 23 May 2025 Form 4 Insider Report for Proto Labs Inc (PRLB)

Role: President and CEO, Director
Signature: /s/ W. Morgan Burns, Attorney-in-Fact
Issuer symbol: PRLB
Transactions as of: 23 May 2025
Transactions value $: $0
Form type: 4
Filing time: 28 May 2025, 16:59:03 UTC
Previous filing: 28 May 2025
Next filing: 06 Aug 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Krishna Suresh	President and CEO, Director	5540 PIONEER CREEK DRIVE, MAPLE PLAIN	/s/ W. Morgan Burns, Attorney-in-Fact	28 May 2025	0001488151

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	PRLB	Common Stock	Award	$0	+16.3K		$0.00	16.3K	23 May 2025	Direct	F1

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
transaction	PRLB	Employee Stock Option (right to buy)	Award	$0	+29.5K		$0.00	29.5K	23 May 2025	Common Stock	29.5K	$36.82	Direct	F2

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Restricted Stock Units that vest as follows: 25% of shares subject to the award will vest on May 23, 2026, and on each May 23rd thereafter until all shares subject to the award are fully vested.
F2	25% of shares subject to the award will vest on May 23, 2026, and on each May 23rd thereafter until all shares subject to the award are fully vested.