Proto Labs Inc — Director's Dealing 2015

Apr 20, 2015

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Proto Labs Inc (PRLB)
CIK: 0001443669
Period of Report: 2015-04-16

Reporting Person: KRANTZ DONALD G (Executive VP and Tech. Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2015-04-16	Common Stock	M	1195	$7.857	Acquired	7285	Direct
2015-04-16	Common Stock	S	1195	$79	Disposed	6090	Direct
2015-04-17	Common Stock	M	1000	$47.08	Acquired	7090	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2015-04-16	Employee Stock Option (right to buy)	$7.857	M	1195	Disposed	2020-12-21	Common Stock (1195)	Direct
2015-04-17	Employee Stock Option (right to buy)	$47.08	M	1000	Disposed	2023-02-15	Common Stock (1000)	Direct

Footnotes

F1: Sale effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 28, 2015.

F2: The option vests as to 20% of the shares in five annual installments beginning on December 21, 2011.

F3: The option vests as to 20% of the shares in five annual installments beginning on February 15, 2014.