Proto Labs PRLB Insider Ownership

NYSE PRLB

$89.71 +1.98 (+2.26%)

As of: Oct 21, 2026 · 3:59 PM EDT

Insider Holdings by Owner

497.41K Shares

Insider Ownership Statistics

as of 30 Sep, 2026

Insider Ownership

1.83%

▼-0.042% pp QoQ

Shares Held by Insiders

439.06K

filed for Sep 2026

▼-2.23% QoQ

Shares Outstanding

23.97Mn

23,969,254 shares

Direct Holdings

439.06K

Indirect: 0

Net Shares Traded (QoQ)

-10.00K

net selling in Sep 2026

Insiders Holding Shares

with Form 4 holdings on file

Shares Owned by Insiders

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Insiders

Bought Sold

Latest quarter —

Net over range —

Buying quarters —

Insider Ownership Summary

Updated Oct 11, 2026

In the last 12 months, insiders at Proto Labs made open-market sales of $3.34 million (46.21K shares) and bought no shares on the open market.

Behind Proto Labs' open-market sales in the past 12 months were 3 insiders, and no insider bought.
Michael R. Kenison (Chief Operations Officer) was PRLB's largest open-market seller in the past 12 months, with $2.29 million of sales (34.21K shares); the latest was on May 12, 2026.
Daniel Schumacher (Chief Financial Officer) made the most recent open-market trade by an insider of Proto Labs, a sale of 5K shares for $476,604 on September 24, 2026.
Outside the open market, Proto Labs insiders received 58.51K shares in stock awards, acquired 21.34K shares through option exercises and conversions and gave up 14.84K shares to cover taxes or exercise prices over the past 12 months.
Per Business Quant, PRLB insiders together hold 439.06K shares based on their latest Form 4 filings, down 2.23% from 449.06K shares at the end of Q2 2026 and up 1.59% from 432.19K shares at the end of Q3 2025.
PRLB's insiders hold all 439.06K shares directly, in their own names, with no indirect holdings.
Per Business Quant, 14 insiders of PRLB hold shares, counting officers, directors and 10% owners who have filed a Form 4 in the past two years.
PRLB's largest insider holders by reported holdings are Robert Bodor (President and CEO, 108.58K shares), Rainer Gawlick (Director, 46.09K shares) and Oleg Ryaboy (Chief Technology Officer, 35.3K shares).
Of the shares held by PRLB insiders, 24.73% belong to Robert Bodor.
Institutional holders reported 93.72% of Proto Labs' outstanding shares for Q2 2026; insiders' latest Form 4 filings put their stake at about 1.83%, and other investors, including the public, hold the remaining 4.45%.
In the past year, 11 insiders of Proto Labs submitted 28 Form 4 filings reporting trades, awards or other transactions.
These insider figures for Proto Labs are based on Form 4 filings through September 25, 2026.

Form 4 Holdings

Insiders Holding PRLB

Insiders 16

Shares held 497.41K

Of outstanding 2.08%

#	Insider	Position	Direct	Total	Share of Insiders	Last Filed
1	Robert Bodor	President And Ceo	108,579	108,579	21.8%	27 Feb, 2025
2	Rainer Gawlick	Director	46,093	46,093	9.3%	21 May, 2026
3	Arthur R. Iii Baker	Chief Technology Officer	35,307	35,307	7.1%	17 Feb, 2022
4	Oleg Ryaboy	Chief Technology Officer	35,305	35,305	7.1%	27 Feb, 2025
5	Daniel Schumacher	Chief Financial Officer	35,019	35,019	7.0%	25 Sep, 2026
6	Sven Wehrwein	Director	32,505	32,505	6.5%	04 Jun, 2026
7	Suresh Krishna	President And Ceo	30,147	30,147	6.1%	27 May, 2026
8	Archie C. Black	Director	28,428	28,428	5.7%	21 May, 2026
9	Donald G Krantz	Executive Vp And Tech. Officer	26,863	26,863	5.4%	21 May, 2026
10	Sujeet Chand	Director	26,863	26,863	5.4%	21 May, 2026
11	Bjoern Klaas	Vp And Mng Director Pl Europe	23,046	23,046	4.6%	15 Feb, 2024
12	Moonhie Chin	Director	22,306	22,306	4.5%	21 May, 2026
13	Stacy Greiner	Director	19,644	19,644	3.9%	28 May, 2025
14	Michael R. Kenison	Chief Operations Officer	18,683	18,683	3.8%	13 May, 2026
15	Marc Kermisch	Chief Technology Ai Officer	6,513	6,513	1.3%	27 Feb, 2026
16	Bernardo Parlange	Chief Commercial Officer	2,109	2,109	0.4%	22 May, 2026

Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.

Form 4 Filings

1,013 Insider Transactions

Source SEC Form 4

Latest quarter Sep 2026

Date	Insider	Position	Transaction	Shares	Price	Value	Shares Held After	Ownership
24 Sep, 2026	Daniel Schumacher	Chief Financial Officer	Disposed S	5,000	$95.32	$476.60K	35,019	Direct
16 Sep, 2026	Daniel Schumacher	Chief Financial Officer	Disposed S	100	$85.00	$8.50K	44,919	Direct
17 Sep, 2026	Daniel Schumacher	Chief Financial Officer	Disposed S	4,900	$85.21	$417.54K	40,019	Direct
02 Jun, 2026	Sven Wehrwein	Director	Disposed S	1,500	$76.91	$115.36K	33,005	Direct
02 Jun, 2026	Sven Wehrwein	Director	Disposed S	500	$78.38	$39.19K	32,505	Direct
23 May, 2026	Suresh Krishna	President And Ceo	Disposed F	1,247	$71.36	$88.99K	30,147	Direct
20 May, 2026	Daniel Schumacher	Chief Financial Officer	Disposed F	255	$71.13	$18.14K	45,019	Direct
20 May, 2026	Bernardo Parlange	Chief Commercial Officer	Acquired A	2,109	$0.00	$0	2,109	Direct
20 May, 2026	Bernardo Parlange	Chief Commercial Officer	Acquired A	3,789	$0.00	$0	3,789	Direct
19 May, 2026	Donald G Krantz	Director	Acquired A	2,210	$0.00	$0	26,863	Direct
19 May, 2026	Archie C. Black	Director	Acquired A	2,210	$0.00	$0	28,428	Direct
19 May, 2026	Sven Wehrwein	Director	Acquired A	2,210	$0.00	$0	34,505	Direct
19 May, 2026	Sujeet Chand	Director	Acquired A	2,210	$0.00	$0	26,863	Direct
19 May, 2026	Rainer Gawlick	Director	Acquired A	2,210	$0.00	$0	46,093	Direct
19 May, 2026	Moonhie Chin	Director	Acquired A	2,210	$0.00	$0	22,306	Direct
11 May, 2026	Michael R. Kenison	Chief Operations Officer	Acquired M	3,756	$33.84	$127.10K	30,942	Direct
11 May, 2026	Michael R. Kenison	Chief Operations Officer	Acquired M	3,677	$33.52	$123.25K	34,619	Direct
11 May, 2026	Michael R. Kenison	Chief Operations Officer	Disposed S	7,433	$70.26	$522.25K	27,186	Direct
12 May, 2026	Michael R. Kenison	Chief Operations Officer	Acquired M	1,928	$33.84	$65.24K	29,114	Direct
12 May, 2026	Michael R. Kenison	Chief Operations Officer	Acquired M	1,557	$39.61	$61.67K	30,671	Direct

Showing 1 to 20 of 1,013 transactions