Proto Labs Inc — Director's Dealing 2015

May 22, 2015

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Proto Labs Inc (PRLB)
CIK: 0001443669
Period of Report: 2015-05-20

Reporting Person: Goodman John B (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2015-05-20	Common Stock	A	715	—	Acquired	7763	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2015-05-20	Stock Option (right to buy)	$31.08	A	1609	Acquired	2025-05-19	Common Stock (1609)	Direct

Footnotes

F1: The restricted stock units vest in full on the earlier of 5/20/16 or the date of the Company's 2016 annual meeting of shareholders.

F2: The option vests in full on the earlier of 5/20/16 or the date of the Company's 2016 annual meeting of shareholders.