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PRLB Proto Labs Inc Insider Trading

Latest: Chief Operations Officer Sold $1.6M of Shares · May 2026

Multiple insiders have been active at Proto Labs Inc (PRLB): 4 distinct insiders account for 3 buy filings and 1 sell filing as of May 2026. Its highest-significance filing in the last 90 days: Chief Operations Officer Kenison Michael R. sold $1.6M, transaction dated May 2026.

4 filings analyzed · Latest 2026-05-13

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Buys
3
Sells
1
Insiders
4
Direction
Net buying

Proto Labs Inc leadership

CEO
Suresh Krishna — President and Chief Executive Officer
CFO
Daniel Schumacher — Chief Financial Officer
COO
Michael R. Kenison — Chief Operations Officer
Chair
Rainer Gawlick — Chairman of the Board

Historically, stocks have lagged the S&P 500 by a median ~3% over the 90 days after a low insider sell (n ≈ 1,162, 2024-2026). Past results don't predict the future. How we measure this ↗

May 2026
2026-05-13 10b5-1 Plan
low
Chief Operations Officer
23,463 shares
$1,636,166
@ $69.73
Significance 2

Proto Labs COO Michael Kenison exercised options and sold shares in two-day sequence; net disposition in stock trading near 52-week highs.

Michael Kenison, Proto Labs' Chief Operating Officer, exercised stock options over two consecutive trading days and simultaneously sold a larger number of shares, resulting in a net reduction of his holdings. The sales occurred while the stock was trading at or very near its 52-week high, a timing pattern that differs from the typical insider buying dynamic when prices are elevated. Kenison has no record of open-market purchases in the past three years, making this exercise-and-sell sequence his first set of open-market sales at Proto Labs; this pattern suggests option-driven liquidity rather than conviction-based trading. The company itself is profitable with growing revenue, providing a stable operational backdrop, though the insider's net reduction of shares during strength may indicate preference for diversification or liquidity over continued accumulation at current valuations.

August 2025
2025-08-07
low
1,715 shares
$75,105
@ $43.79
Significance 4

Director Gawlick Rainer purchases 1,715 shares of PRLB at $43.79; stock now at $46.29 vs. +13.7% in 30 days

Director Rainer purchased 1,715 shares at $43.79, increasing his holdings to 43,883 shares (+4.1% net change). The stock has appreciated 13.7% over the past 30 days and 14.3% over 90 days, currently trading at $46.29—near the 52-week high of $46.29. While the purchase represents a director-level open-market buy, it occurs in the context of elevated valuation metrics (P/E of 74.66) and muted fundamentals (revenue growth of -0.6% annually, net income of $4.4M on $135.1M revenue). The transaction size is modest relative to his existing position, and the timing follows sharp recent price appreciation, leaving the strategic intent unclear.

2025-08-06
medium
President and CEO
1,725 shares
$75,055
@ $43.51
Significance 5

CEO Krishna Suresh buys 1,725 shares of PRLB at $43.51; holdings rise 10.6% to 18,021 shares.

Krishna Suresh, President and CEO, purchased 1,725 shares at $43.51 on 2025-08-04 for $75,054.75, increasing his holdings by 10.6% to 18,021 shares. The purchase occurred near the 52-week high of $45.03, with the stock recently up 10.9% over 30 days and 11.8% over 90 days. However, Proto Labs' financial picture presents a contrasting context: the company posted net income of $4.4M on revenue of $135.1M in the latest quarter, but annual revenue growth stands at -0.6% year-over-year, and the stock trades at a premium valuation with a P/E of 72.52. The CEO's accumulation during a period of upward price momentum and near 52-week highs, despite flat-to-declining revenue fundamentals, warrants investor attention to understand whether this reflects management confidence in near-term execution or other factors.

September 2024
2024-09-09
medium
President and CEO
3,480 shares
$99,800
@ $28.68
Significance 5

CEO Robert Bodor buys 3,480 shares of Proto Labs at $28.68 on 2024-09-06, increasing holdings to 80,878 shares

Robert Bodor, President and CEO of Proto Labs, purchased 3,480 shares at $28.68 on 2024-09-06, growing his stake from 77,398 to 80,878 shares. The purchase occurred when the stock was trading 30.5% below its 52-week high of $40.20 and down 11.9% over the prior 90 days, representing an open-market acquisition by the chief executive. At a market cap of $702.6M and P/E of 28.51, the company is trading at a substantial valuation multiple; the latest quarter showed revenue of $125.6M with net income of $4.5M and annual revenue growth of only 3.2%. This purchase by the CEO provides a direct counterpoint to the stock's recent downward momentum, though the modest 4.5% increase to his holdings and the company's modest growth rate warrant monitoring of underlying operational trends.

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