Protolabs (PRLB): ARK Investment Management reduced its stake -6,769 shares

29K

Shares reported · -6,769 vs prior quarter

0.02%

Disclosed portfolio weight

$2.72M

Reported value

Holdings as of

Sep 30, 2026

Filed

Nov 13, 2026

The story around this disclosure

Every dated public record OQRO holds about the company from 60 days before to 120 days after, oldest first. It shows what was going on; none of it is a stated reason for the trade.

1. Sep 24, 2026InsiderCFO sold ~$477K of PRLB shares in the open market
2. Oct 29, 2026Company filing · Form 8-K · ResultsReported its results
3. Nov 2, 2026Insider · First insider buy since Aug 2025CEO purchased ~$52K of PRLB shares in the open market
4. Nov 3, 2026InsiderDirector purchased ~$49K of PRLB shares in the open market

How to read SEC Form 13F-HR

Form 13F is the quarterly report in which investment managers that oversee $100 million or more list the US-listed stocks and some other securities they held on the last day of the quarter.

Full guide: What is an SEC Form 13F?

What else is on file for Protolabs

For Protolabs, OQRO holds 3 insider filings (SEC Form 4 or Form 144), 1 fund holdings report (13F) and 2 federal contract awards dated in the last 90 days.

These are records OQRO holds, counted by their date, not a measure of how much trading took place. Routine paperwork such as option exercises and tax withholding is left out. Everything for the company is on its PRLB page.

How this filing works

• SEC Form 13F

Other disclosures at Protolabs

• SEC Form 4Nov 4, 2026
• SEC Form 4Nov 4, 2026
• SEC Form 4Sep 25, 2026
• USAspending.gov award recordAug 31, 2026
• USAspending.gov award recordAug 26, 2026
• SEC Form 13F-HRAug 14, 2026

Everything OQRO holds on this company is on its PRLB page.