Proto Labs Inc. (PRLB) Insider Trading

Last 12 months

Insiders sold $3.34M and bought nothing on the open market.

95% of the selling was scheduled in advance under 10b5-1 plans. The last open-market buy by an executive or director was in Aug 2025.

Net open-market

−$3.34M

0 buys · 8 sales

Under a 10b5-1 plan

95%

of the value sold

Insiders who bought / sold

0 / 3

executives and directors

Last open-market buy

Aug 2025

Aug 5, 2025

Get an email when PRLB's executives or directors buy, or make a large sale outside a plan.

Trades · last 2 years

Date	Insider	Trade	Shares	Price	Value	Of their stake	Filing
Sep 24	Daniel Schumacher Chief Financial Officer	Sold10b5-1 plan	5,000	$95.32	$477k	12%	Form 4
Sep 16 – 17	Daniel Schumacher Chief Financial Officer	Sold10b5-1 plan 2 parts	5,000	$85.21 average	$426k	11%	Form 4
Jun 2	Sven Wehrwein Director	SoldNo plan 2 parts	2,000	$77.28 average	$155k	5.8%	Form 4
May 11 – 12	Michael R. Kenison Chief Operations Officer	Sold10b5-1 plan 5 parts	23,463	$69.73 average	$1.64M	56%	Form 4
May 7	Michael R. Kenison Chief Operations Officer	Sold10b5-1 plan	200	$70.00	$14k	0.7%	Form 4
Feb 17	Michael R. Kenison Chief Operations Officer	Sold10b5-1 plan	5,000	$66.46	$332k	17%	Form 4
Feb 6	Michael R. Kenison Chief Operations Officer	Sold10b5-1 plan	2,500	$60.00	$150k	6.8%	Form 4
Nov 25, 2025	Michael R. Kenison Chief Operations Officer	Sold10b5-1 plan	3,048	$50.17	$153k	9.5%	Form 4
Aug 5, 2025	Rainer Gawlick Director	Bought	1,715	$43.79	$75k	4.1%	Form 4
Aug 4, 2025	Suresh Krishna President and CEO	Bought	1,725	$43.51	$75k	11%	Form 4

Sep 2410b5-1 plan
Daniel Schumacher
Chief Financial Officer · sold 5,000 at $95.32
$477k
12% of stake
Sep 16 – 1710b5-1 plan
Daniel Schumacher
Chief Financial Officer · sold 5,000 at avg $85.21
$426k
11% of stake
Jun 2No plan
Sven Wehrwein
Director · sold 2,000 at avg $77.28
$155k
5.8% of stake
May 11 – 1210b5-1 plan
Michael R. Kenison
Chief Operations Officer · sold 23,463 at avg $69.73
$1.64M
56% of stake
May 710b5-1 plan
Michael R. Kenison
Chief Operations Officer · sold 200 at $70.00
$14k
0.7% of stake
Feb 1710b5-1 plan
Michael R. Kenison
Chief Operations Officer · sold 5,000 at $66.46
$332k
17% of stake
Feb 610b5-1 plan
Michael R. Kenison
Chief Operations Officer · sold 2,500 at $60.00
$150k
6.8% of stake
Nov 25, 202510b5-1 plan
Michael R. Kenison
Chief Operations Officer · sold 3,048 at $50.17
$153k
9.5% of stake
Aug 5, 2025
Rainer Gawlick
Director · bought 1,715 at $43.79
$75k
4.1% of stake
Aug 4, 2025
Suresh Krishna
President and CEO · bought 1,725 at $43.51
$75k
11% of stake

How to read this. Insiders sell for many reasons: taxes, diversifying, a house. Open-market buys are rarer and say more. A 10b5-1 plan is a trading schedule set up months in advance, so those sales were not timed on news. Large holders (funds and 10% owners) are listed under Everything but not counted as insiders. If you own or watch PRLB, we send a push when an executive buys or makes a large sale outside a plan.

Source: SEC Form 4 filings, filed within two business days of each trade and checked for new ones every hour.

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Spot a number that looks wrong? Check it in PRLB's SEC filings or

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Data sourced from SEC EDGAR filings and third-party price providers. Scores, valuations, and metrics are algorithmic estimates. This is not investment advice. See our Terms and Methodology.

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