PRLB insider buying and SEC filings, explained
Proto Labs Inc · CIK 1443669
Tracked: Forms 3/4/5, 8-K, NT · All filings on sec.gov
Insider activity in the last 12 months
Bought
$0
Insiders who bought
0
Sold (not marked 10b5-1)
$155K
Planned sales (10b5-1)
$3.2M
Insider purchases and sales, last 12 months
| Traded | Type | What was filed | Source |
|---|---|---|---|
| Sep 24, 2026 | Planned (10b5-1) | Daniel Schumacher (CFO) sold 5,000 shares at about $95.32 ($477K), marked as a 10b5-1 plan trade. Holdings down 12% to 35,019 shares. | SEC filing Filed Sep 25, 2026 |
| Sep 16–17, 2026 | Planned (10b5-1) | Daniel Schumacher (CFO) sold 5,000 shares between Sep 16 and Sep 17 at about $85.21 ($426K), marked as a 10b5-1 plan trade. Holdings down 11% to 40,019 shares. | SEC filing Filed Sep 18, 2026 |
| Jun 2, 2026 | Sale | Sven Wehrwein (Director) sold 2,000 shares at about $77.28 ($155K). Holdings down 6% to 32,505 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Jun 4, 2026 |
| May 11–12, 2026 | Planned (10b5-1) | Michael R. Kenison (Chief Operations Officer) sold 23,463 shares between May 11 and May 12 at about $69.73 ($1.6M), marked as a 10b5-1 plan trade. Holdings down 56% to 18,683 shares. | SEC filing Filed May 13, 2026 |
| May 7, 2026 | Planned (10b5-1) | Michael R. Kenison (Chief Operations Officer) sold 200 shares at $70.00 ($14K), marked as a 10b5-1 plan trade. Holdings down 1% to 27,186 shares. | SEC filing Filed May 8, 2026 |
| Feb 17, 2026 | Planned (10b5-1) | Michael R. Kenison (Chief Operations Officer) sold 5,000 shares at about $66.46 ($332K), marked as a 10b5-1 plan trade. Holdings down 17% to 25,302 shares. | SEC filing Filed Feb 18, 2026 |
| Feb 6, 2026 | Planned (10b5-1) | Michael R. Kenison (Chief Operations Officer) sold 2,500 shares at $60.00 ($150K), marked as a 10b5-1 plan trade. Holdings down 7% to 34,526 shares. | SEC filing Filed Feb 9, 2026 |
| Nov 25, 2025 | Planned (10b5-1) Amended filing | Michael R. Kenison (Chief Operations Officer) sold 3,048 shares at about $50.17 ($153K), marked as a 10b5-1 plan trade. Holdings down 10% to 28,898 shares. This amends a filing from Nov 26, 2025. | SEC filing Filed Dec 3, 2025 |
23 routine transactions (such as grants, option exercises or tax withholding) are not listed.
Cluster buys
No cluster buys in the last 12 months.
Red flags
No red flags in the last 12 months.
Key events
No key events in the last 12 months.
8-K filings, last 12 months
No 8-K filings in the last 12 months.
Red flags are objective triggers only: the item or form filed, never an opinion.
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