Insider tradingForm 4

Proto Labs Inc (PRLB) Insider Trading

3 open-market trades reported since Sep 18, 2026: 0 purchases worth $0 and 3 sales worth $903K.

By insider

Insider	Role	Buys	Bought	Sells	Sold	Latest
Daniel Schumacher	CFO	0	$0	3	$903K	Sep 25, 2026

PRLB insider trades
Filed	Traded	Insider	Role	Type	Shares	Price ($)	Value	Holding	Filing
Sep 25	Sep 24	Daniel SchumacherCFO	CFO	▼ SELL10b5-1	5,000	95.32	$477K	−13%	Form 4 ↗
Sep 18	Sep 17	Daniel SchumacherCFO	CFO	▼ SELL10b5-1	4,900	85.21	$418K	−11%	Form 4 ↗
Sep 18	Sep 16	Daniel SchumacherCFO	CFO	▼ SELL10b5-1	100	85.00	$9K	−0.2%	Form 4 ↗

Source: SEC Form 4 filings, retrieved Oct 28, 2026. How we read filings