PRLB insider buying
2 cluster buysProto Labs Inc
When two or more insiders at Proto Labs Inc buy PRLB in a qualifying detection window, the grouped purchases provide a starting point for further research. Below is every cluster we've detected in PRLB plus the full record of qualifying open-market buys, each parsed directly from Form 4 filings and linked back to the source on SEC EDGAR.
Detected clusters
- Nov 2 – Nov 3, 2026Detected Nov 4, 2026Executive buyer2 insidersTotal bought$101.2KMarket capUnknown
- Aug 4 – Aug 5, 2025Detected Aug 5, 2025Executive buyer2 insidersTotal bought$150.2KMarket cap$1.8B
All notable open-market buys in PRLB
Every open-market Form 4 purchase, newest first. Click an insider to see their full buying record across companies.
| Date | Insider | Shares | Price | Value | Filing |
|---|---|---|---|---|---|
| Nov 3, 2026 | Gawlick Rainercluster Director | 720 | $68.18 | $49.1K | SEC ↗ |
| Nov 2, 2026 | Krishna Sureshcluster Director, President and CEO | 750 | $69.52 | $52.1K | SEC ↗ |
| Aug 5, 2025 | Gawlick Rainercluster Director | 1,715 | $43.79 | $75.1K | SEC ↗ |
| Aug 4, 2025 | Krishna Sureshcluster Director, President and CEO | 1,725 | $43.51 | $75.1K | SEC ↗ |
| Sep 6, 2024 | President and CEO | 3,480 | $28.68 | $99.8K | SEC ↗ |
PRLB insider buying — FAQ
- Are insiders buying PRLB stock?
- Yes — 5 distinct insiders have bought PRLB (Proto Labs Inc) on the open market, including 2 cluster buys where two or more insiders bought within a rolling window. The most recent qualifying activity was Nov 4, 2026.
- How much PRLB stock have insiders bought?
- Insiders have bought a combined $351.2K of PRLB across 5 open-market purchases, based on SEC Form 4 filings.
- What is an insider cluster buy in PRLB?
- A cluster buy is two or more distinct Proto Labs Inc insiders — officers, directors, or 10% owners — each buying PRLB on the open market within a rolling window. PRLB has 2 detected cluster buys to date.
- Where does this PRLB insider trading data come from?
- Every figure is parsed directly from SEC Form 4 filings on EDGAR, and each purchase on this page links back to its original filing document.
How we track insider buying in PRLB
We continuously poll SEC EDGAR for new Form 4 filings and parse every open-market purchase (transaction code P). A cluster is recorded when two or more distinct insiders — officers, directors, or 10% owners — each buy PRLB within a rolling window. We track clusters at every company size, from micro-caps to mega-caps. Transactions link to official filings; prices and market capitalizations may be cached market data. Read our methodology and data limits before interpreting the figures. What counts as a cluster buy?
This page is informational and reflects public filing data. It is not investment advice or a recommendation regarding PRLB.