NYSE:PRLB

Proto Labs Stock Insider Trading

Industrials > Manufacturing - Metal Fabrication

Buy PRLB

*Your capital is at risk

$79.81

-1.87 (-2.29%)

At Close: Jun 23, 2026

Proto Labs Stock Insider Power

Based on the 100 latest insides trades, we have calculated the insider power to be negative at -22.19. In total, the insiders bought 432.97K and sold 52.07K PRLB shares in the last 100 trades. The insider score can be negative despite buy/sell ratio being positive. The score focuses on the quality of the trades.

Insider Power (Last 100 transactions)	-22.19
● Buy	432.97K shares
● Sell	52.07K shares
77% Buy Activity Weak Negative Correlation
Sell Signal Medium Confidence May 12, 2026 Analysis Breakdown: Supported by a negative Insider Power Score of -22.19. Confidence increased due to high data reliability score of 100.

Historical Insider Trades

Date	Type	Person	Role	Amount
May 23, 2025 Buy	Employee Stock Option (right to buy) A-Award	Krishna Suresh President And CEO	CEO / President	29 522 Value: $1.09M
May 23, 2025 Buy	Common Stock A-Award	Krantz Donald G Director	Director	3 939 Value: $145.0K
May 23, 2025 Buy	Common Stock A-Award	Wehrwein Sven Director	Director	3 939 Value: $145.0K
May 23, 2025 Buy	Common Stock A-Award	Greiner Stacy Director	Director	3 939 Value: $145.0K
May 23, 2025 Buy	Common Stock A-Award	Chand Sujeet Director	Director	3 939 Value: $145.0K
May 23, 2025 Buy	Common Stock A-Award	Chin Moonhie Director	Director	3 939 Value: $145.0K
May 23, 2025 Buy	Common Stock A-Award	Gawlick Rainer Director	Director	3 939 Value: $145.0K
May 23, 2025 Buy	Common Stock A-Award	Black Archie C. Director	Director	3 939 Value: $145.0K
May 20, 2025 Buy	Common Stock J-Other	Krishna Suresh President And CEO	CEO / President	0 Value: $0
May 20, 2025 Buy	Common Stock J-Other	Krishna Suresh President And CEO	CEO / President	0 Value: $0
May 20, 2025 Sell	Common Stock F-InKind	Schumacher Daniel Chief Financial Officer	C-Suite Officer	305 Value: $12.5K
May 20, 2025 Sell	Common Stock F-InKind	Kenison Michael R. Chief Operations Officer	Officer	204 Value: $8K
May 20, 2025 Sell	Common Stock F-InKind	Kenison Michael R. Chief Operations Officer	Officer	204 Value: $8K
May 20, 2025 Sell	Common Stock F-InKind	Schumacher Daniel Chief Financial Officer	C-Suite Officer	305 Value: $12.5K
Feb 25, 2025 Buy	Common Stock A-Award	Schumacher Daniel Chief Financial Officer	C-Suite Officer	4 419 Value: $175.0K
Feb 25, 2025 Buy	Employee Stock Option (right to buy) A-Award	Schumacher Daniel Chief Financial Officer	C-Suite Officer	7 931 Value: $314.1K
Feb 25, 2025 Buy	Common Stock A-Award	Kenison Michael R. Chief Operations Officer	Officer	6 943 Value: $275.0K
Feb 25, 2025 Buy	Employee Stock Option (right to buy) A-Award	Kenison Michael R. Chief Operations Officer	Officer	6 231 Value: $246.8K
Feb 25, 2025 Buy	Common Stock A-Award	Ryaboy Oleg Chief Technology Officer	Officer	7 574 Value: $300.0K
Feb 25, 2025 Buy	Employee Stock Option (right to buy) A-Award	Ryaboy Oleg Chief Technology Officer	Officer	6 798 Value: $269.3K
Feb 25, 2025 Buy	Common Stock A-Award	Bodor Robert President And CEO	CEO / President	18 935 Value: $750.0K
Feb 25, 2025 Buy	Employee Stock Option (right to buy) A-Award	Bodor Robert President And CEO	CEO / President	33 986 Value: $1.35M
Feb 25, 2025 Buy	Employee Stock Option (right to buy) A-Award	Kenison Michael R. Chief Operations Officer	Officer	6 231 Value: $246.8K
Feb 25, 2025 Buy	Common Stock A-Award	Kenison Michael R. Chief Operations Officer	Officer	6 943 Value: $275.0K
Feb 25, 2025 Buy	Employee Stock Option (right to buy) A-Award	Schumacher Daniel Chief Financial Officer	C-Suite Officer	7 931 Value: $314.1K

About Insider Power

Insider Power is a proprietary algorithm developed by StockInvest.us to evaluate the significance of insider transactions. The calculation considers the size, type, and timing of transactions, as well as the insider’s role within the company.

It is important to note that, in general, there is little to no correlation between insider transactions and short-term stock price movements. In one of our studies, only 0.22%^* of stocks with insider activity showed a measurable correlation — and even then, it was unclear whether the effect was caused by insider actions or simply by the stock’s broader trend.

While our algorithms are designed to highlight potentially meaningful signals, these cannot be regarded as statistically significant on their own. Insider trading activity should therefore be seen as informative rather than as direct trading guidance. The Insider Power metric was created to present this information in a clearer and more accessible way, helping investors better understand the possible context of insider activity.

* October 6th, 2025 - Tested on 5562 stocks