// company-profile
Proto Labs Inc
PRLBExchangeNYSESectorFabricated Structural Metal ProductsInc.MNFilings69Insiders15
// api This Proto Labs Inc insider-trading data is served live by the Form4API insider trading API. Get the same data via API.
// activity-summary
Recent insider activity is bearish. Over the last 30 days, insiders net sold $155K across 2 transactions.
// 90-day insight
Over the last 90 days, Proto Labs Inc insiders bought $367K (14 transactions) and sold $1.4M (8 transactions).
- Most active insider: Kenison Michael R. with 20 transactions totaling $2.3M.
- Largest single sale: $522K by Kenison Michael R. on May 11, 2026.
- 20% of recent sales were pre-scheduled 10b5-1 trades — typically less informative than open-market activity.
Activity skews bullish — buys outpace sales.
Institutional Ownership
Top 13F-HR holders of Proto Labs Inc as of 2026-03-31
Total reported AUM
$1.15B
QoQ change
+26.3%
Reporting period
2026-03-31
#1
DISCIPLINED GROWTH INVESTORS INC /MN
CIK 1050442
$142.4M
2.5M shares
#2
BlackRock, Inc.
CIK 2012383
$141.9M
2.5M shares
#3
DIMENSIONAL FUND ADVISORS LP
CIK 354204
$69.3M
1.2M shares
Data source: SEC Form 13F-HR filings. Joined with insider activity above — see who's loading up institutionally while insiders are trading. Full 13F-HR API →
Insider Transactions
Sourced from SEC EDGAR Form 4 filings. Updated hourly.
| Date | Insider | Company | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Jun 2, 2026 | WEHRWEIN SVEN | PRLB | Sale | 500 | $78.38 | $39K |
| Jun 2, 2026 | WEHRWEIN SVEN | PRLB | Sale | 1,500 | $76.91 | $115K |
| May 23, 2026 | Krishna Suresh | PRLB | Tax Withholding | 1,247 | $71.36 | $89K |
| May 20, 2026 | Parlange Bernardo | PRLB | Award | 3,789 | $0.00 | $0K |
| May 20, 2026 | Schumacher Daniel | PRLB | Tax Withholding | 255 | $71.13 | $18K |
45 more transactions hidden
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