United States Machinery, Equipment & Components

Proto Labs Inc (PRLB)

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Over the past 90 days, Proto Labs Inc. has seen 13 insider transactions, all of which were sales totaling approximately $4.67 million. Key activity involved former officer Michael R. Kenison and director Sven Wehrwein. These transactions occurred amid a 30.3% stock price increase, with the stock currently trading near its 52-week high following recent results financiers.
Ticker: PRLB Exchange: NYS
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• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Buy signal Sell signal Earnings
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Insider trades have triggered activity signals for Proto Labs Inc. Upgrade to see score, net flow, insiders and the full signal context.

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Proposed sale 4 Aug 2026
Value US$2,675,399.76 | Price 141.59 | Shares 55,376
Abbreviations B: Buy, S: Sell, PP: Planned purchase, PlS: Planned sale, PrS: Proposed sale, O: Option / Other
Notification date Transaction date B/S Transaction type Insider and/or position Nb. shares
Price
Value 		Number of shares Price Value Details
2026-08-04 2026-08-04 PrS Proposed sale
MICHAEL R KENISON

Former Officer

Officer
55,376
141.59
US$2,675,400 		55,376 141.59 US$2,675,400
2026-06-04 2026-06-02 S Sale
3.0
WEHRWEIN SVEN
Non-Executive Director
49,018 -47.5%
41.00
US$297,912 		49,018 -47.5% 41.00 US$297,912
2026-06-04 2026-06-02 S Sale
3.0
WEHRWEIN SVEN
Non-Executive Director
48,429 +8.0%
424.99
US$2,280,866 		48,429 +8.0% 424.99 US$2,280,866
2026-06-04 2026-06-02 S Sale
3.0
WEHRWEIN SVEN
Non-Executive Director
1,500 -4.3%
76.91
US$115,360 		1,500 -4.3% 76.91 US$115,360
2026-06-04 2026-06-02 S Sale
3.0
WEHRWEIN SVEN
Non-Executive Director
1,500 -4.3%
76.91
US$115,360 		1,500 -4.3% 76.91 US$115,360
2026-06-01 2026-06-01 PrS Proposed sale
3.0
WEHRWEIN SVEN

Director

Non-Executive Director
2,000
75.95
US$151,900 		2,000 75.95 US$151,900
2026-05-13 2026-05-12 S Sale
Kenison Michael R.

Chief Operations Officer

Officer
6,643 -26.2%
70.30
US$466,975 		6,643 -26.2% 70.30 US$466,975
2026-05-13 2026-05-12 S Sale
Kenison Michael R.

Chief Operations Officer

Officer
3,576 -12.4%
69.78
US$249,542 		3,576 -12.4% 69.78 US$249,542
2026-05-13 2026-05-12 S Sale
Kenison Michael R.

Chief Operations Officer

Officer
4,198 -12.7%
68.70
US$288,390 		4,198 -12.7% 68.70 US$288,390
2026-05-13 2026-05-12 S Sale
Kenison Michael R.

Chief Operations Officer

Officer
1,613 -4.6%
67.58
US$109,008 		1,613 -4.6% 67.58 US$109,008
2026-05-12 2026-05-12 PrS Proposed sale
MICHAEL R KENISON

Officer

Officer
16,030
69.49
US$1,113,915 		16,030 69.49 US$1,113,915
2026-05-13 2026-05-11 PlS Planned sale
Kenison Michael R.

Chief Operations Officer

Officer
7,433 -21.5%
70.26
US$522,251 		7,433 -21.5% 70.26 US$522,251
2026-05-11 2026-05-11 PrS Proposed sale
MICHAEL KENISON

Officer

Officer
7,433
69.30
US$515,107 		7,433 69.30 US$515,107
2026-05-08 2026-05-07 PlS Planned sale
Kenison Michael R.

Chief Operations Officer

Officer
200 -0.7%
70.00
US$14,000 		200 -0.7% 70.00 US$14,000
2026-05-07 2026-05-07 PrS Proposed sale
MICHAEL KENISON

Officer

Officer
200
68.89
US$13,778 		200 68.89 US$13,778
2026-02-18 2026-02-17 PlS Planned sale
Kenison Michael R.

Chief Operations Officer

Officer
5,000 -16.5%
66.46
US$332,315 		5,000 -16.5% 66.46 US$332,315
2026-02-09 2026-02-06 PlS Planned sale
Kenison Michael R.

Chief Operations Officer

Officer
2,500 -6.8%
60.00
US$150,000 		2,500 -6.8% 60.00 US$150,000
2026-02-06 2026-02-06 PrS Proposed sale
MICHAEL KENISON

Officer

Officer
7,500
52.48
US$393,600 		7,500 52.48 US$393,600
2026-01-16 2026-01-16 PrS Proposed sale
OLEG RYABOY

Former Officer

Officer
368
54.81
US$20,169 		368 54.81 US$20,169
2026-01-15 2026-01-15 PrS Proposed sale
OLEG RYABOY

Former Officer

Officer
7,178
54.80
US$393,330 		7,178 54.80 US$393,330
2026-01-08 2026-01-08 PrS Proposed sale
OLEG RYABOY

Former Officer

Officer
7,026
54.71
US$384,414 		7,026 54.71 US$384,414
2026-01-07 2026-01-07 PrS Proposed sale
OLEG RYABOY

Former Officer

Officer
6,669
53.58
US$357,327 		6,669 53.58 US$357,327
2025-11-26 2025-11-25 PlS Planned sale
Kenison Michael R.

Chief Operations Officer

Officer
3,048 -9.5%
50.17
US$152,931 		3,048 -9.5% 50.17 US$152,931
2025-11-25 2025-11-25 PrS Proposed sale
OLEG RYABOY

Former Officer

Officer
695
49.91
US$34,687 		695 49.91 US$34,687
2025-11-25 2025-11-25 PrS Proposed sale
MICHAEL KENISON

Officer

Officer
3,048
49.26
US$150,144 		3,048 49.26 US$150,144
2025-11-07 2025-11-07 PrS Proposed sale
OLEG RYABOY

Former Officer

Officer
9,710
48.57
US$471,629 		9,710 48.57 US$471,629
2025-08-07 2025-08-05 B Purchase
3.3
Gawlick Rainer
Non-Executive Director
1,715 +4.1%
43.79
US$75,105 		1,715 +4.1% 43.79 US$75,105
2025-08-06 2025-08-04 B Purchase
3.9
Krishna Suresh

President and CEO

Executive Director
1,725 +10.6%
43.51
US$75,055 		1,725 +10.6% 43.51 US$75,055
2024-09-09 2024-09-06 PP Planned purchase
3.1
Bodor Robert

President and CEO

Officer
3,480 +4.5%
28.68
US$99,800 		3,480 +4.5% 28.68 US$99,800
2021-12-06 2021-12-03 B Purchase
3.1
Bodor Robert

President and CEO

Officer
3,138 +14.6%
47.87
US$150,219 		3,138 +14.6% 47.87 US$150,219
2021-12-01 2021-12-01 B Purchase
3.8
Baker Arthur R. III

Chief Technology Officer

Officer
10,000 +48.5%
49.21
US$492,100 		10,000 +48.5% 49.21 US$492,100
2021-03-03 2021-03-01 S Sale
3.0
Goodman John B
Non-Executive Director
1,000 -7.4%
151.19
US$151,185 		1,000 -7.4% 151.19 US$151,185
2021-02-18 2021-02-16 S Sale
3.2
HOLT VICTORIA M

President and CEO

Executive Director
1,258 -2.1%
189.28
US$238,120 		1,258 -2.1% 189.28 US$238,120
2021-02-18 2021-02-16 S Sale
3.2
HOLT VICTORIA M

President and CEO

Executive Director
9,540 -13.8%
188.53
US$1,798,608 		9,540 -13.8% 188.53 US$1,798,608
2021-02-18 2021-02-16 S Sale
3.2
HOLT VICTORIA M

President and CEO

Executive Director
8,112 -10.5%
187.66
US$1,522,314 		8,112 -10.5% 187.66 US$1,522,314
2021-02-18 2021-02-16 S Sale
3.8
Baker Arthur R. III

Chief Technology Officer

Officer
2,000 -10.1%
196.26
US$392,520 		2,000 -10.1% 196.26 US$392,520
2021-02-18 2021-02-16 S Sale
3.8
Baker Arthur R. III

Chief Technology Officer

Officer
700 -3.4%
186.82
US$130,775 		700 -3.4% 186.82 US$130,775
2021-02-18 2021-02-16 S Sale
3.8
Baker Arthur R. III

Chief Technology Officer

Officer
2,100 -9.3%
185.66
US$389,887 		2,100 -9.3% 185.66 US$389,887
2021-02-18 2021-02-16 S Sale
3.8
Baker Arthur R. III

Chief Technology Officer

Officer
1,500 -6.2%
184.85
US$277,275 		1,500 -6.2% 184.85 US$277,275
2021-02-18 2021-02-16 S Sale
3.8
Baker Arthur R. III

Chief Technology Officer

Officer
900 -3.6%
183.69
US$165,318 		900 -3.6% 183.69 US$165,318
2021-02-18 2021-02-16 S Sale
3.8
Baker Arthur R. III

Chief Technology Officer

Officer
1,100 -4.2%
182.81
US$201,093 		1,100 -4.2% 182.81 US$201,093
2021-02-18 2021-02-16 S Sale
3.8
Baker Arthur R. III

Chief Technology Officer

Officer
802 -3.0%
181.09
US$145,235 		802 -3.0% 181.09 US$145,235
2020-12-22 2020-12-18 PlS Planned sale
3.3
Gawlick Rainer
Non-Executive Director
2,000 -7.6%
160.00
US$320,008 		2,000 -7.6% 160.00 US$320,008
2020-09-08 2020-09-03 PlS Planned sale
3.2
HOLT VICTORIA M

President and CEO

Executive Director
800 -1.4%
161.14
US$128,912 		800 -1.4% 161.14 US$128,912
2020-09-08 2020-09-03 PlS Planned sale
3.2
HOLT VICTORIA M

President and CEO

Executive Director
400 -0.7%
159.19
US$63,676 		400 -0.7% 159.19 US$63,676
2020-09-08 2020-09-03 PlS Planned sale
3.2
HOLT VICTORIA M

President and CEO

Executive Director
1,200 -2.0%
157.81
US$189,368 		1,200 -2.0% 157.81 US$189,368
2020-09-08 2020-09-03 PlS Planned sale
3.2
HOLT VICTORIA M

President and CEO

Executive Director
2,330 -3.7%
156.60
US$364,882 		2,330 -3.7% 156.60 US$364,882
2020-09-08 2020-09-03 PlS Planned sale
3.2
HOLT VICTORIA M

President and CEO

Executive Director
3,158 -4.8%
155.50
US$491,061 		3,158 -4.8% 155.50 US$491,061
2020-09-08 2020-09-03 PlS Planned sale
3.2
HOLT VICTORIA M

President and CEO

Executive Director
3,219 -4.6%
154.45
US$497,160 		3,219 -4.6% 154.45 US$497,160
2020-09-08 2020-09-03 PlS Planned sale
3.2
HOLT VICTORIA M

President and CEO

Executive Director
2,617 -3.6%
153.69
US$402,196 		2,617 -3.6% 153.69 US$402,196
2020-09-08 2020-09-03 PlS Planned sale
3.2
HOLT VICTORIA M

President and CEO

Executive Director
4,266 -5.6%
152.43
US$650,272 		4,266 -5.6% 152.43 US$650,272
2020-08-26 2020-08-24 S Sale
3.0
Goodman John B
Non-Executive Director
1,000 -6.9%
132.75
US$132,746 		1,000 -6.9% 132.75 US$132,746
2020-08-12 2020-08-12 S Sale
3.0
WEHRWEIN SVEN
Non-Executive Director
762 -5.0%
131.00
US$99,822 		762 -5.0% 131.00 US$99,822
2020-08-12 2020-08-11 S Sale
3.0
WEHRWEIN SVEN
Non-Executive Director
4,000 -21.8%
130.05
US$520,213 		4,000 -21.8% 130.05 US$520,213
2020-08-10 2020-08-06 S Sale
1.5
WAY JOHN

Chief Financial Officer

Officer
200 -0.6%
133.66
US$26,731 		200 -0.6% 133.66 US$26,731
2020-08-10 2020-08-06 S Sale
1.5
WAY JOHN

Chief Financial Officer

Officer
2,050 -6.1%
132.53
US$271,683 		2,050 -6.1% 132.53 US$271,683
2020-08-10 2020-08-06 S Sale
1.5
WAY JOHN

Chief Financial Officer

Officer
13,701 -29.1%
131.44
US$1,800,831 		13,701 -29.1% 131.44 US$1,800,831
2020-05-20 2020-05-18 PlS Planned sale
3.8
Baker Arthur R. III

Chief Technology Officer

Officer
1,988 -9.1%
115.07
US$228,751 		1,988 -9.1% 115.07 US$228,751
2020-05-04 2020-04-30 PlS Planned sale
3.1
Bodor Robert

VP/General Manager-Americas

Officer
3,773 -19.9%
109.00
US$411,257 		3,773 -19.9% 109.00 US$411,257
2020-05-04 2020-04-30 PlS Planned sale
3.1
Bodor Robert

VP/General Manager-Americas

Officer
3,118 -14.1%
107.00
US$333,626 		3,118 -14.1% 107.00 US$333,626
2020-05-04 2020-04-30 PlS Planned sale
3.1
Bodor Robert

VP/General Manager-Americas

Officer
2,790 -11.2%
101.85
US$284,162 		2,790 -11.2% 101.85 US$284,162
2018-09-26 2018-09-24 PlS Planned sale WAY JOHN

Chief Financial Officer

Officer
4,644 -15.4%
160.14
US$743,692 		4,644 -15.4% 160.14 US$743,692
2018-09-26 2018-09-24 PlS Planned sale WAY JOHN

Chief Financial Officer

Officer
3,356 -10.0%
157.66
US$529,105 		3,356 -10.0% 157.66 US$529,105
2018-09-18 2018-09-14 PlS Planned sale Goodman John B Non-Executive Director
1,113 -8.4%
162.95
US$181,365 		1,113 -8.4% 162.95 US$181,365
2018-09-11 2018-09-04 S Sale Baker Arthur R. III

Chief Technology Officer

Officer
3,474 -17.4%
154.81
US$537,815 		3,474 -17.4% 154.81 US$537,815
2018-09-04 2018-08-30 PlS Planned sale Bodor Robert

VP/General Manager-Americas

Officer
4,435 -18.3%
150.20
US$666,127 		4,435 -18.3% 150.20 US$666,127
2018-08-28 2018-08-24 S Sale WAY JOHN

Chief Financial Officer

Officer
1,486 -5.5%
146.25
US$217,332 		1,486 -5.5% 146.25 US$217,332
2018-08-28 2018-08-24 S Sale WAY JOHN

Chief Financial Officer

Officer
2,426 -8.2%
145.51
US$353,005 		2,426 -8.2% 145.51 US$353,005
2018-08-27 2018-08-23 PlS Planned sale Bodor Robert

VP/General Manager-Americas

Officer
3,000 -13.2%
145.00
US$435,000 		3,000 -13.2% 145.00 US$435,000
2018-06-19 2018-06-15 PlS Planned sale Bodor Robert

VP/General Manager-Americas

Officer
2,997 -13.2%
135.10
US$404,904 		2,997 -13.2% 135.10 US$404,904
2018-06-18 2018-06-14 PlS Planned sale Goodman John B Non-Executive Director
400 -3.2%
130.85
US$52,340 		400 -3.2% 130.85 US$52,340
2018-06-18 2018-06-14 PlS Planned sale Goodman John B Non-Executive Director
713 -5.4%
131.86
US$94,020 		713 -5.4% 131.86 US$94,020
2018-06-14 2018-06-12 PlS Planned sale Bodor Robert

VP/General Manager-Americas

Officer
3,000 -13.2%
130.00
US$390,012 		3,000 -13.2% 130.00 US$390,012
2018-06-01 2018-05-30 S Sale WEHRWEIN SVEN
1,000 -7.8%
125.00
US$125,000 		1,000 -7.8% 125.00 US$125,000
2018-03-16 2018-03-14 PlS Planned sale Goodman John B
1,114 -9.6%
122.71
US$136,700 		1,114 -9.6% 122.71 US$136,700
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