Proto Labs Inc — Director's Dealing 2013

Sep 24, 2013

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Proto Labs Inc (PRLB)
CIK: 0001443669
Period of Report: 2013-09-23

Reporting Person: Tumelty John B. (Managing Dir.-Proto Labs, Ltd.)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2013-09-23	Common Stock	M	1750	$7.86	Acquired	1750	Direct
2013-09-23	Common Stock	S	1750	$78.00	Disposed	0	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2013-09-23	Employee Stock Option (right to buy)	$7.86	M	1750	Disposed	2020-12-21	Common Stock (1750)	Direct

Footnotes

F1: Sales effected pursuant toRule 10b5-1 trading plan adopted by the reporting person on June 6, 2013.

F2: This stock option vests on a monthly basis in 2013 and will then vest 20% of the shares annually on each of 12/21/14 and 12/21/15.