SEC Form 4 reporting owner

Schumacher Daniel

Schumacher Daniel has filed 11 Form 4 transactions reported between January 29, 2026 and September 24, 2026, as Chief Financial Officer of Proto Labs Inc.

Name as filed: Schumacher Daniel

Open-market buys, 24 mo

None

reported

Open-market sales, 24 mo

$903K

3 lines

Companies

with Form 4 filings

Latest transaction

Sep 24, 2026

transaction date

Roles and reported holdings

PRLBProto Labs Inc
Jan 29, 2026 – Sep 24, 2026
Chief Financial Officer
Held directly35,019 sh as of Sep 24, 2026 · Form 4
24 months: $903K sold

Transaction history

All 11 reported transactions, newest first. Every row links to the Form 4 on SEC EDGAR.

Date	Company	Type	Shares	Price	Value	Owned after	Filing
Sep 24, 2026	PRLBChief Financial Officer	Open-market saleCode S · direct	5,000	$95.32	$477K@ $95.32	35,019	Form 4
Sep 17, 2026	PRLBChief Financial Officer	Open-market saleCode S · direct	4,900	$85.21	$418K@ $85.21	40,019	Form 4
Sep 16, 2026	PRLBChief Financial Officer	Open-market saleCode S · direct	100	$85.00	$9K@ $85.00	44,919	Form 4
May 20, 2026	PRLBChief Financial Officer	Shares withheld for tax or exercise priceCode F · direct	255	$71.13	$18K@ $71.13	45,019	Form 4
Feb 25, 2026	PRLBChief Financial Officer	Grant or awardCode A · direct	5,605	—	—	5,605	Form 4
Feb 25, 2026	PRLBChief Financial Officer	Shares withheld for tax or exercise priceCode F · direct	504	$62.63	$32K@ $62.63	45,274	Form 4
Feb 25, 2026	PRLBChief Financial Officer	Grant or awardCode A · direct	3,074	—	—	45,778	Form 4
Feb 13, 2026	PRLBChief Financial Officer	Shares withheld for tax or exercise priceCode F · direct	1,267	$67.52	$86K@ $67.52	42,704	Form 4
Feb 11, 2026	PRLBChief Financial Officer	Option exerciseCode M · direct	3,135	$33.84	$106K@ $33.84	43,971	Form 4
Feb 10, 2026	PRLBChief Financial Officer	Shares withheld for tax or exercise priceCode F · direct	6,809	$53.18	$362K@ $53.18	40,836	Form 4
Jan 29, 2026	PRLBChief Financial Officer	Grant or awardCode A · direct	20,686	—	—	47,645	Form 4

How this page is built

Every row comes from a Form 4 filed with the SEC, which officers, directors and holders of more than 10% of a company’s stock must file within two business days of a trade. Transactions are grouped by the reporting owner’s name as filed (spacing, capitals and punctuation ignored); two different people filing under an identical name would appear together, and one person filing under two spellings appears on two pages.

Open-market totals count code P purchases and code S sales over the last 24 months. The same trade reported on more than one filing is counted once; when another owner (for example a fund and its general partner) reports the identical trade, they are listed beside it. Holdings are the shares owned after the latest purchase, sale, gift or tax-withholding line, shown separately for direct and indirect ownership; an indirect figure is one holding line, not a total across every trust or entity.

This page describes what was filed with the SEC; it is not investment advice or a recommendation to buy or sell any security.