Proto Labs Inc — Director's Dealing 2018

Sep 11, 2018

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Proto Labs Inc (PRLB)
CIK: 0001443669
Period of Report: 2018-09-04

Reporting Person: Baker Arthur R. III (Chief Technology Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2018-09-04	Common Stock	M	3474	$60.96	Acquired	20020	Direct
2018-09-04	Common Stock	S	3474	$154.8115	Disposed	16546	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2018-09-04	Employee Stock Option (right to buy)	$60.96	M	3474	Disposed	2026-05-02	Common Stock (3474)	Direct

Footnotes

F1: Reflects the weighted average price of 3,474 shares of common stock of Proto Labs, Inc. sold by the reporting person on September 4, 2018 with sale prices ranging from $154.55 to $155.10 per share. The reporting person undertakes to provide upon request by the U.S. Securities and Exchange Commission staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares sold at each separate price.

F2: The option vests as to 20% of the shares in five annual installments beginning on May 4, 2017.