Proto Labs (PRLB) stock: insider trades, news & valuation
Heavy sellingShare price and insider trades
Proto Labs insider trading at a glance (Oct 9, 2026): in the past 12 months, 0 insiders bought $0 and 3 sold $3.5M of PRLB stock on the open market.
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PRLB insider buying and selling by quarter
Open-market purchases (green, above the line) and sales (red, below), by trade date.
| Quarter | Bought | Purchases | Sold | Sales |
|---|---|---|---|---|
| Q4 2026 | — | 0 | — | 0 |
| Q3 2026 | — | 0 | $903K | 3 |
| Q2 2026 | — | 0 | $1.8M | 8 |
| Q1 2026 | — | 0 | $482K | 2 |
| Q4 2025 | — | 0 | $306K | 2 |
Valuation, profit and volume
Summary
Over the past 12 months, 0 Proto Labs Inc insiders reported open-market purchases totaling $0, while 3 insiders reported sales totaling $3.5M. 13 of 15 recorded sales were made under pre-scheduled Rule 10b5-1 trading plans, which are usually less informative than discretionary sales.
Insider transactions
Open-market purchases and sales.
| Filed | Insider | Type | Shares | Price | Value | Since | Score |
|---|---|---|---|---|---|---|---|
| Sep 25SEC | Daniel SchumacherCFO | Sell Plan | 5,00035,019 held (−12%) | $95.32 | $477K | -1.6% | — |
| Sep 18SEC | Daniel SchumacherCFO | Sell Plan | 4,90040,019 held (−11%) | $85.21 | $418K | +10.1% | — |
| Sep 18SEC | Daniel SchumacherCFO | Sell Plan | 10044,919 held (−0%) | $85.00 | $8K | +10.4% | — |
| Jun 4SEC | Sven WehrweinDirector | Sell | 1,50033,005 held (−4%) | $76.91 | $115K | +22.0% | — |
| Jun 4SEC | Sven WehrweinDirector | Sell | 50032,505 held (−2%) | $78.38 | $39K | +19.7% | — |
| May 13SEC | Michael R. KenisonChief Operations Officer | Sell Plan | 7,43327,186 held (−21%) | $70.26 | $522K | +33.6% | — |
| May 13SEC | Michael R. KenisonChief Operations Officer | Sell Plan | 6,64318,683 held (−26%) | $70.30 | $467K | +33.5% | — |
| May 13SEC | Michael R. KenisonChief Operations Officer | Sell Plan | 4,19828,902 held (−13%) | $68.70 | $288K | +36.6% | — |
| May 13SEC | Michael R. KenisonChief Operations Officer | Sell Plan | 3,57625,326 held (−12%) | $69.78 | $250K | +34.5% | — |
| May 13SEC | Michael R. KenisonChief Operations Officer | Sell Plan | 1,61333,100 held (−5%) | $67.58 | $109K | +38.9% | — |
| May 8SEC | Michael R. KenisonChief Operations Officer | Sell Plan | 20027,186 held (−1%) | $70.00 | $14K | +34.1% | — |
| Feb 18SEC | Michael R. KenisonChief Operations Officer | Sell Plan | 5,00025,302 held (−17%) | $66.46 | $332K | +41.2% | — |
| Feb 9SEC | Michael R. KenisonChief Operations Officer | Sell Plan | 2,50034,526 held (−7%) | $60.00 | $150K | +56.4% | — |
| Dec 3SEC | Michael R. KenisonChief Operations Officer | Sell Plan | 3,04828,898 held (−10%) | $50.17 | $153K | +87.0% | — |
| Nov 26SEC | Michael R. KenisonChief Operations Officer | Sell Plan | 3,04828,898 held (−10%) | $50.17 | $153K | +87.0% | — |
Insiders at Proto Labs Inc
| Insider | Bought | Sold | Last filing | Score |
|---|---|---|---|---|
| Michael R. KenisonChief Operations Officer | — | $2.4M | May 13, 2026 | — |
| Daniel SchumacherCFO | — | $903K | Sep 25, 2026 | — |
| Sven WehrweinDirector | — | $155K | Jun 4, 2026 | — |
PRLB stock: common questions
Are Proto Labs Inc insiders buying PRLB stock?
In the past 12 months, 0 insiders reported open-market purchases of PRLB worth $0.
Are Proto Labs Inc insiders selling PRLB stock?
3 insiders reported sales worth $3.5M over the same period.
Where does this data come from?
Every transaction comes from Form 4 filings that insiders must submit to the SEC within two business days of a trade. We pull them from SEC EDGAR every night.
What is PRLB's 52-week range?
Over the past year PRLB has traded between $46.81 and $98.68. It last closed at $93.84 on Oct 9, 2026.