PRLB
Proto Labs Inc · Manufacturing · Market cap $2.1B
Insiders sold $903K net in the last 90 days ·1 seller, 0 buyers· 1 of 3 sales under Rule 10b5-1 plans· latest Form 4 filed Sep 25, 2026
Insider Buying
$0
reported purchases (SEC code P)
Insider Selling
$3.3M
reported sales (SEC code S)
Unique Insiders
3
in the rolling window
Latest filing
Sep 25, 2026
Schumacher Daniel
Proto Labs Inc (PRLB) has 28 SEC Form 4 filings (47 transaction rows) in the rolling window, disclosed by 3 distinct insiders. Most recent filing: Sep 25, 2026.
Inside the rolling window, 3 insiders at Proto Labs Inc reported no open-market purchases and 10 open-market sales totaling $3.3M. The most active filer is Chief Operations Officer Kenison Michael R. with 6 filings. Insiders have net sold $2.7M over the trailing 6 months. The most recent open-market filing is a sale of 5,000 shares by Chief Financial Officer Schumacher Daniel, dated Sep 24, 2026, worth $477K.
- Industry:Manufacturing - Miscellaneous
- CEO:Suresh Krishna
- Employees:2,280
- HQ:Maple Plain, MN, US
- IPO:2012-02-24
| Source | |||||||
|---|---|---|---|---|---|---|---|
| Chief Financial Officer | Sale | 5,000 | $477K | Sep 25 | -6.8% | SEC ↗ | |
Schumacher DanielFirst filing | Chief Financial Officer | Sale | 100 | $9K | Sep 18 | +2.2% | SEC ↗ |
Schumacher DanielFirst filing | Chief Financial Officer | Sale | 4,900 | $418K | Sep 18 | +2.2% | SEC ↗ |
WEHRWEIN SVENFirst in 6 months | Director | Sale | 2,000 | $155K | Jun 4 | +19.9% | SEC ↗ |
| Chief Operations Officer | Sale | 7,433 | $522K | May 13 | +24.8% | SEC ↗ | |
| Chief Operations Officer | Sale | 16,030 | $1.1M | May 13 | +24.8% | SEC ↗ | |
| Chief Operations Officer | Sale | 200 | $14K | May 8 | — | SEC ↗ | |
| Chief Operations Officer | Sale | 5,000 | $332K | Feb 18 | — | SEC ↗ | |
| Chief Operations Officer | Sale | 2,500 | $150K | Feb 9 | — | SEC ↗ | |
| Chief Operations Officer | Sale | 3,048 | $153K | Dec 3 | — | SEC ↗ |
Earnings: last 7 quarters
Congress trading PRLB 3 all-time
- RRep. Greg GianforteOther$100,001 - $250,0002020-10-28
- RRep. Greg GianfortePurchase$100,001 - $250,0002019-09-06
- RSen. Thomas Roland TillisOther$1,001 - $15,0002015-02-13
STOCK Act disclosures are filed up to 45 days after the trade. Amount is a disclosed range, not an exact figure.
Frequently asked questions
How many SEC Form 4 insider filings does PRLB have?
Proto Labs Inc (PRLB) has 28 SEC Form 4 filings (47 transaction rows) in the rolling 365-day window, disclosed by 3 distinct insiders. Most recent filing: Sep 25, 2026.
When was the most recent SEC Form 4 filing for PRLB?
The most recent Form 4 filing for PRLB on Tracefour is dated Sep 25, 2026.
Who is the most active insider at PRLB?
The most active SEC Form 4 filer at PRLB in the rolling window is Chief Operations Officer Kenison Michael R., with 6 filings.
What is the net insider flow at PRLB over the last 6 months?
Over the trailing 180 days, insiders at PRLB have net sold $2.7M based on SEC Form 4 disclosures.
What is the total insider buy and sell value at PRLB in the current window?
Inside the rolling window, insiders at PRLB bought $0 and sold $3.3M based on SEC Form 4 filings.
Can I get alerts for PRLB insider trading?
Yes. Tracefour sends a free email when a new SEC Form 4 purchase or sale is filed at Proto Labs Inc (PRLB). Alerts are set per company from the page itself, there is no paid tier, and each email links to the original filing on SEC EDGAR.
Related companies
Proto Labs Inc is in the Manufacturing sector.