SEC Form 4 · Updated Daily

PRLB

— Proto Labs, Inc. Ownership

Insider and institutional ownership derived from SEC Form 4 filings. Click any owner to see their holdings across every company they’ve filed on, and how their position has changed over time.

Financials Ownership

Current Reporting Owners

Owner	Role	Shares Owned	As Of	Last Activity
Gawlick Rainer	Director	46,093	2026-05-19	A
Schumacher Daniel	Officer	45,019	2026-05-20	F
WEHRWEIN SVEN	Director	32,505	2026-06-02	S
Krishna Suresh	Director	30,147	2026-05-23	F
Black Archie C.	Director	28,428	2026-05-19	A
KRANTZ DONALD G	Director	26,863	2026-05-19	A
Chand Sujeet	Director	26,863	2026-05-19	A
Chin Moonhie	Director	22,306	2026-05-19	A
Greiner Stacy	Director	19,644	2025-05-23	A
Kenison Michael R.	Officer	18,683	2026-05-12	S
Kermisch Marc	Officer	6,513	2026-02-25	A
Parlange Bernardo	Officer	2,109	2026-05-20	A

Recent Filings

Date	Owner	Activity	Shares	Price	Owned After
2026-06-02	WEHRWEIN SVEN	Open-market sale	500	$78.38	32,505
2026-06-02	WEHRWEIN SVEN	Open-market sale	1,500	$76.91	33,005
2026-05-23	Krishna Suresh	Tax withholding	1,247	$71.36	30,147
2026-05-20	Parlange Bernardo	Grant / award (derivative)	3,789	$0.00	3,789
2026-05-20	Parlange Bernardo	Grant / award	2,109	$0.00	2,109
2026-05-20	Schumacher Daniel	Tax withholding	255	$71.13	45,019
2026-05-19	KRANTZ DONALD G	Grant / award	2,210	$0.00	26,863
2026-05-19	WEHRWEIN SVEN	Grant / award	2,210	$0.00	34,505
2026-05-19	Gawlick Rainer	Grant / award	2,210	$0.00	46,093
2026-05-19	Chin Moonhie	Grant / award	2,210	$0.00	22,306
2026-05-19	Chand Sujeet	Grant / award	2,210	$0.00	26,863
2026-05-19	Black Archie C.	Grant / award	2,210	$0.00	28,428
2026-05-12	Kenison Michael R.	Option exercise (derivative)	4,042	$0.00	0
2026-05-12	Kenison Michael R.	Option exercise (derivative)	1,557	$0.00	4,674
2026-05-12	Kenison Michael R.	Option exercise (derivative)	1,928	$0.00	1,928
2026-05-12	Kenison Michael R.	Open-market sale	6,643	$70.30	18,683
2026-05-12	Kenison Michael R.	Open-market sale	3,576	$69.78	25,326
2026-05-12	Kenison Michael R.	Open-market sale	4,198	$68.70	28,902
2026-05-12	Kenison Michael R.	Open-market sale	1,613	$67.58	33,100
2026-05-12	Kenison Michael R.	Option exercise	4,042	$59.40	34,713
2026-05-12	Kenison Michael R.	Option exercise	1,557	$39.61	30,671
2026-05-12	Kenison Michael R.	Option exercise	1,928	$33.84	29,114
2026-05-11	Kenison Michael R.	Option exercise (derivative)	3,677	$0.00	3,778
2026-05-11	Kenison Michael R.	Option exercise (derivative)	3,756	$0.00	3,856
2026-05-11	Kenison Michael R.	Open-market sale	7,433	$70.26	27,186
2026-05-11	Kenison Michael R.	Option exercise	3,677	$33.52	34,619
2026-05-11	Kenison Michael R.	Option exercise	3,756	$33.84	30,942
2026-05-07	Kenison Michael R.	Option exercise (derivative)	100	$0.00	7,455
2026-05-07	Kenison Michael R.	Option exercise (derivative)	100	$0.00	7,612
2026-05-07	Kenison Michael R.	Open-market sale	200	$70.00	27,186
2026-05-07	Kenison Michael R.	Option exercise	100	$33.52	27,386
2026-05-07	Kenison Michael R.	Option exercise	100	$33.84	27,286
2026-02-25	Kermisch Marc	Grant / award (derivative)	5,095	$0.00	5,095
2026-02-25	Kermisch Marc	Grant / award	2,795	$0.00	6,513
2026-02-25	Kenison Michael R.	Grant / award (derivative)	4,404	$0.00	4,404
2026-02-25	Kenison Michael R.	Tax withholding	531	$62.63	27,186
2026-02-25	Kenison Michael R.	Grant / award	2,415	$0.00	27,717
2026-02-25	Schumacher Daniel	Grant / award (derivative)	5,605	$0.00	5,605
2026-02-25	Schumacher Daniel	Tax withholding	504	$62.63	45,274
2026-02-25	Schumacher Daniel	Grant / award	3,074	$0.00	45,778

Source: SEC EDGAR Form 4 filings. For informational purposes only — not investment advice.