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PRLB Insider Trading

Insider Ownership Percentage: 1.70%
Insider Buying (Last 12 Months): $75,054.75
Insider Selling (Last 12 Months): $152,918.16

Proto Labs Insider Trading History Chart

This chart shows the insider buying and selling history at Proto Labs by year and by quarter.

Skip ChartChart Data in Insider Trading History Table

Proto Labs Share Price & Price History

Current Price: $51.60
Price Change: ▲ Price Increase of +0.422 (0.82%)
As of 12/4/2025 04:59 PM ET

This chart shows the closing price history over time for PRLB up to the past year.

Skip Chart and Table DataPrice Data in Insider Trading History Table
Days: 30 | 90 | 365

Proto Labs Insider Trading History

Transaction DateInsider NameTitleBuy/SellNumber of SharesAverage Share PriceTotal TransactionShares Held After TransactionDetails
11/25/2025Michael R KenisonInsiderSell3,048$50.17$152,918.1628,898View SEC Filing Icon  
8/4/2025Suresh KrishnaCEOBuy1,725$43.51$75,054.7518,021View SEC Filing Icon  
9/6/2024Robert BodorCEOBuy3,480$28.68$99,806.4080,878View SEC Filing Icon  
See Full Table

SEC Filings (Institutional Ownership Changes) for Proto Labs (NYSE:PRLB)

84.54% of Proto Labs stock is owned by institutions. Institutional ownership can be a sign of analyst confidence in the fundamentals of the stock.

Institutional Buying and Selling by Quarter

This chart shows the instiutional buying and selling at PRLB by year and by quarter.

Skip Institutional Buying and Selling Chart and Table DataRead Chart Data in Institutional Trading History Table

Proto Labs Institutional Trading History

Reporting DateHedge FundShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
12/1/2025Polar Asset Management Partners Inc.128,429$6.43M0.1%N/A0.542%Search for SEC Filing on Google Icon
11/19/2025Auto Owners Insurance Co4,500$0.23M0.0%N/A0.019%Search for SEC Filing on Google Icon
11/17/2025CANADA LIFE ASSURANCE Co19,845$0.99M0.0%-7.2%0.084%Search for SEC Filing on Google Icon
11/17/2025Dark Forest Capital Management LP46,204$2.31M0.1%+18.8%0.195%Search for SEC Filing on Google Icon
11/17/2025Verition Fund Management LLC15,718$0.79M0.0%-30.5%0.066%Search for SEC Filing on Google Icon
11/17/2025Qube Research & Technologies Ltd73,657$3.69M0.0%-21.2%0.311%Search for SEC Filing on Google Icon
11/17/2025Prelude Capital Management LLC5,282$0.26M0.0%N/A0.022%Search for SEC Filing on Google Icon
11/17/2025Mercer Global Advisors Inc. ADV5,826$0.29M0.0%N/A0.025%Search for SEC Filing on Google Icon
11/17/2025Millennium Management LLC104,168$5.21M0.0%-32.9%0.440%Search for SEC Filing on Google Icon
11/17/2025MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.12,362$0.62M0.0%-16.0%0.052%Search for SEC Filing on Google Icon
11/17/2025Gotham Asset Management LLC13,339$0.67M0.0%-14.1%0.056%Search for SEC Filing on Google Icon
11/17/2025Bank of America Corp DE132,361$6.62M0.0%+93.9%0.559%Search for SEC Filing on Google Icon
11/17/2025Aquatic Capital Management LLC1,281$64K0.0%N/A0.005%Search for SEC Filing on Google Icon
11/17/2025Algert Global LLC86,974$4.35M0.1%+5.4%0.367%Search for SEC Filing on Google Icon
11/17/2025Alliancebernstein L.P.27,840$1.39M0.0%-12.6%0.118%Search for SEC Filing on Google Icon
11/17/2025Ameriprise Financial Inc.53,388$2.67M0.0%-38.6%0.225%Search for SEC Filing on Google Icon
11/14/2025Creative Planning6,883$0.34M0.0%+9.0%0.029%Search for SEC Filing on Google Icon
11/14/2025Lazard Asset Management LLC90,587$4.53M0.0%+952.6%0.383%Search for SEC Filing on Google Icon
11/14/2025Polar Asset Management Partners Inc.128,429$6.43M0.1%N/A0.542%Search for SEC Filing on Google Icon
11/14/2025Rubric Capital Management LP1,123,338$56.20M0.6%+8.6%4.744%Search for SEC Filing on Google Icon
11/14/2025American Capital Management Inc.279,296$13.97M0.6%+417.0%1.180%Search for SEC Filing on Google Icon
11/14/2025Horizon Investments LLC11,491$0.58M0.0%-4.7%0.049%Search for SEC Filing on Google Icon
11/14/2025Disciplined Growth Investors Inc. MN2,592,373$129.70M2.3%-4.8%10.948%Search for SEC Filing on Google Icon
11/14/2025Zurcher Kantonalbank Zurich Cantonalbank 5,456$0.27M0.0%+28.6%0.023%Search for SEC Filing on Google Icon
11/14/2025UBS AM A Distinct Business Unit of UBS Asset Management Americas LLC60,237$3.01M0.0%-40.6%0.254%Search for SEC Filing on Google Icon
11/14/2025Two Sigma Investments LP4,500$0.23M0.0%-19.6%0.019%Search for SEC Filing on Google Icon
11/14/2025Bridgeway Capital Management LLC109,541$5.48M0.1%+5.1%0.463%Search for SEC Filing on Google Icon
11/14/2025Comerica Bank6,495$0.33M0.0%-19.9%0.027%Search for SEC Filing on Google Icon
11/13/2025Invesco Ltd.102,334$5.12M0.0%+10.8%0.432%Search for SEC Filing on Google Icon
11/13/2025Arrowstreet Capital Limited Partnership460,618$23.05M0.0%+3.0%1.945%Search for SEC Filing on Google Icon
11/13/2025UBS Group AG176,880$8.85M0.0%-26.9%0.747%Search for SEC Filing on Google Icon
11/13/2025BNP Paribas Financial Markets19,128$0.96M0.0%+73.0%0.081%Search for SEC Filing on Google Icon
11/13/2025Franklin Resources Inc.30,355$1.52M0.0%-1.6%0.128%Search for SEC Filing on Google Icon
11/13/2025Legal & General Group Plc65,246$3.26M0.0%-2.2%0.276%Search for SEC Filing on Google Icon
11/13/2025Swiss National Bank46,100$2.31M0.0%+1.5%0.195%Search for SEC Filing on Google Icon
11/13/2025Russell Investments Group Ltd.2,208$0.11M0.0%-90.1%0.009%Search for SEC Filing on Google Icon
11/13/2025Dynamic Technology Lab Private Ltd6,000$0.30M0.1%N/A0.025%Search for SEC Filing on Google Icon
11/13/2025First Trust Advisors LP83,716$4.19M0.0%-18.9%0.354%Search for SEC Filing on Google Icon
11/12/2025Barclays PLC34,250$1.71M0.0%-26.0%0.145%Search for SEC Filing on Google Icon
11/12/2025ARK Investment Management LLC71,797$3.59M0.0%-9.7%0.303%Search for SEC Filing on Google Icon
11/12/2025Dimensional Fund Advisors LP1,306,367$65.36M0.0%-0.7%5.517%Search for SEC Filing on Google Icon
11/12/2025Teachers Retirement System of The State of Kentucky6,877$0.34M0.0%-19.4%0.029%Search for SEC Filing on Google Icon
11/12/2025Victory Capital Management Inc.7,370$0.37M0.0%-54.2%0.031%Search for SEC Filing on Google Icon
11/12/2025AIMZ Investment Advisors LLC40,028$2M0.6%-2.1%0.169%Search for SEC Filing on Google Icon
11/12/2025Intech Investment Management LLC15,318$0.77M0.0%+37.1%0.065%Search for SEC Filing on Google Icon
11/10/2025Ameritas Investment Partners Inc.1,988$99K0.0%-24.2%0.008%Search for SEC Filing on Google Icon
11/10/2025Hillsdale Investment Management Inc.169,584$8.48M0.3%+10.4%0.716%Search for SEC Filing on Google Icon
11/7/2025SG Capital Management LLC113,587$5.68M0.5%N/A0.480%Search for SEC Filing on Google Icon
11/7/2025Vanguard Group Inc.2,744,977$137.33M0.0%-1.0%11.592%Search for SEC Filing on Google Icon
11/7/2025JPMorgan Chase & Co.87,339$4.37M0.0%+301.4%0.369%Search for SEC Filing on Google Icon
11/7/2025Shell Asset Management Co.1,015$51K0.0%-57.0%0.004%Search for SEC Filing on Google Icon
11/6/2025Public Sector Pension Investment Board113,012$5.65M0.0%+39.5%0.477%Search for SEC Filing on Google Icon
11/6/2025Cornerstone Investment Partners LLC4,043$0.20M0.0%N/A0.017%Search for SEC Filing on Google Icon
11/6/2025LSV Asset Management3,400$0.17M0.0%N/A0.014%Search for SEC Filing on Google Icon
11/6/2025Rhumbline Advisers72,780$3.64M0.0%-1.7%0.307%Search for SEC Filing on Google Icon
11/6/2025Essex Investment Management Co. LLC20,886$1.05M0.2%N/A0.088%Search for SEC Filing on Google Icon
11/6/2025Versor Investments LP9,600$0.48M0.1%+71.8%0.041%Search for SEC Filing on Google Icon
11/6/2025ProShare Advisors LLC4,484$0.22M0.0%-15.6%0.019%Search for SEC Filing on Google Icon
11/5/2025Alps Advisors Inc.19,218$0.96M0.0%-10.5%0.081%Search for SEC Filing on Google Icon
11/4/2025Allianz Asset Management GmbH9,115$0.46M0.0%N/A0.038%Search for SEC Filing on Google Icon
11/4/2025Jones Financial Companies Lllp545$27K0.0%-48.6%0.002%Search for SEC Filing on Google Icon
11/4/2025State of Wyoming1,370$69K0.0%-15.0%0.006%Search for SEC Filing on Google Icon
11/4/2025Principal Financial Group Inc.131,002$6.55M0.0%-3.2%0.549%Search for SEC Filing on Google Icon
11/4/2025Thrivent Financial for Lutherans17,224$0.86M0.0%-1.5%0.072%Search for SEC Filing on Google Icon
11/3/2025AlphaQuest LLC5,378$0.27M0.0%-77.1%0.023%Search for SEC Filing on Google Icon
11/3/2025Gagnon Securities LLC108,749$5.44M1.1%-5.1%0.455%Search for SEC Filing on Google Icon
11/3/2025Hussman Strategic Advisors Inc.42,000$2.10M0.5%N/A0.176%Search for SEC Filing on Google Icon
10/31/2025Y Intercept Hong Kong Ltd26,616$1.33M0.0%-36.9%0.111%Search for SEC Filing on Google Icon
10/30/2025Teacher Retirement System of Texas25,267$1.26M0.0%+21.4%0.106%Search for SEC Filing on Google Icon
10/30/2025Strs Ohio14,500$0.73M0.0%-9.9%0.061%Search for SEC Filing on Google Icon
10/29/2025Amalgamated Bank7,071$0.35M0.0%+3.4%0.030%Search for SEC Filing on Google Icon
10/28/2025Campbell & CO Investment Adviser LLC25,875$1.30M0.1%-22.7%0.108%Search for SEC Filing on Google Icon
10/27/2025Nordea Investment Management AB257,255$12.73M0.0%+3.1%1.078%Search for SEC Filing on Google Icon
10/24/2025New York State Teachers Retirement System23,619$1.18M0.0%-3.8%0.099%Search for SEC Filing on Google Icon
10/24/2025State of Alaska Department of Revenue13,333$0.67M0.0%-5.7%0.056%Search for SEC Filing on Google Icon
10/23/2025SG Americas Securities LLC21,419$1.07M0.0%+1.7%0.090%Search for SEC Filing on Google Icon
10/22/2025CWA Asset Management Group LLC40,252$2.01M0.1%+10.8%0.169%Search for SEC Filing on Google Icon
10/20/2025VIRGINIA RETIREMENT SYSTEMS ET Al25,900$1.30M0.0%+79.9%0.108%Search for SEC Filing on Google Icon
10/20/2025Diversified Trust Co10,028$0.50M0.0%+8.4%0.042%Search for SEC Filing on Google Icon
10/16/2025Rice Hall James & Associates LLC121,982$6.10M0.3%-16.1%0.511%Search for SEC Filing on Google Icon
10/15/2025CWM LLC2,589$0.13M0.0%+80.8%0.011%Search for SEC Filing on Google Icon
10/15/2025Pacer Advisors Inc.8,216$0.41M0.0%-92.2%0.034%Search for SEC Filing on Google Icon
10/14/2025Yousif Capital Management LLC7,447$0.37M0.0%-18.0%0.031%Search for SEC Filing on Google Icon
10/9/2025Voya Investment Management LLC29,703$1.49M0.0%-13.0%0.124%Search for SEC Filing on Google Icon
10/7/2025Assenagon Asset Management S.A.27,745$1.39M0.0%-57.9%0.116%Search for SEC Filing on Google Icon
10/1/2025Praxis Investment Management Inc.4,100$0.21M0.0%N/A0.017%Search for SEC Filing on Google Icon
9/24/2025Texas Permanent School Fund Corp9,868$0.40M0.0%-17.6%0.041%Search for SEC Filing on Google Icon
9/4/2025Osaic Holdings Inc.3,072$0.12M0.0%+477.4%0.013%Search for SEC Filing on Google Icon
8/26/2025Thrivent Financial for Lutherans17,479$0.70M0.0%-2.9%0.073%Search for SEC Filing on Google Icon
8/19/2025State of Wyoming1,611$65K0.0%-43.0%0.007%Search for SEC Filing on Google Icon
8/18/2025Nomura Holdings Inc.6,176$0.25M0.0%N/A0.026%Search for SEC Filing on Google Icon
8/16/2025Public Sector Pension Investment Board81,016$3.24M0.0%+4.3%0.339%Search for SEC Filing on Google Icon
8/15/2025CANADA LIFE ASSURANCE Co21,377$0.86M0.0%+8.1%0.090%Search for SEC Filing on Google Icon
8/15/2025Tower Research Capital LLC TRC 2,806$0.11M0.0%+363.0%0.012%Search for SEC Filing on Google Icon
8/15/2025State of Tennessee Department of Treasury9,733$0.39M0.0%-17.8%0.041%Search for SEC Filing on Google Icon
8/15/2025Captrust Financial Advisors15,826$0.63M0.0%+10.9%0.066%Search for SEC Filing on Google Icon
8/15/2025Tidal Investments LLC22,999$0.92M0.0%+8.0%0.096%Search for SEC Filing on Google Icon
8/15/2025Rubric Capital Management LP1,034,171$41.41M0.6%+791.9%4.331%Search for SEC Filing on Google Icon
8/15/2025BNP Paribas Financial Markets11,059$0.44M0.0%+560.2%0.046%Search for SEC Filing on Google Icon
8/15/2025Bridgeway Capital Management LLC104,267$4.18M0.1%+4.9%0.437%Search for SEC Filing on Google Icon
Data available starting January 2016

See Full Table
Proto Labs logo
Proto Labs, Inc., together with its subsidiaries, operates as a digital manufacturer of custom parts in the United States and Europe. The company offers injection molding; computer numerical control machining; three-dimensional printing; and sheet metal fabrication products. It serves developers and engineers, who use 3D computer-aided design software to design products across a range of end-markets. Proto Labs, Inc. was incorporated in 1999 and is headquartered in Maple Plain, Minnesota.
Read More on Proto Labs

Today's Range

Now: $51.60
Low: $50.85
High: $52.12

50 Day Range

MA: $50.66
Low: $46.82
High: $55.41

52 Week Range

Now: $51.60
Low: $29.58
High: $55.90

Volume

121,891 shs

Average Volume

157,413 shs

Market Capitalization

$1.22 billion

P/E Ratio

84.59

Dividend Yield

N/A

Beta

1.18

Who are the company insiders with the largest holdings of Proto Labs?

Proto Labs' top insider investors include:
  1. Robert Bodor (CEO)
  2. Michael R Kenison (Insider)
  3. Suresh Krishna (CEO)
Learn More about top insider investors at Proto Labs.

Who are the major institutional investors of Proto Labs?

Proto Labs' top institutional shareholders include:
  1. Vanguard Group Inc. — 11.59%
  2. Disciplined Growth Investors Inc. MN — 10.95%
  3. Dimensional Fund Advisors LP — 5.52%
  4. Rubric Capital Management LP — 4.74%
  5. Arrowstreet Capital Limited Partnership — 1.95%
  6. American Capital Management Inc. — 1.18%
Learn More about top institutional investors of Proto Labs stock.

Which institutional investors are selling Proto Labs stock?

During the previous quarter, PRLB stock was sold by these institutional investors:
  1. Disciplined Growth Investors Inc. MN
  2. Pacer Advisors Inc.
  3. UBS Group AG
  4. Millennium Management LLC
  5. UBS AM A Distinct Business Unit of UBS Asset Management Americas LLC
  6. Assenagon Asset Management S.A.
  7. Ameriprise Financial Inc.
  8. Vanguard Group Inc.

Which institutional investors are buying Proto Labs stock?

During the previous quarter, PRLB stock was bought by institutional investors including:
  1. American Capital Management Inc.
  2. Polar Asset Management Partners Inc.
  3. Polar Asset Management Partners Inc.
  4. SG Capital Management LLC
  5. Rubric Capital Management LP
  6. Lazard Asset Management LLC
  7. JPMorgan Chase & Co.
  8. Bank of America Corp DE
During the previous year, these company insiders have bought Proto Labs stock:
  1. Robert Bodor (CEO)
  2. Michael R Kenison (Insider)
Learn More investors buying Proto Labs stock.