# Proto Labs (PRLB): value investors who own it | moatshark

1 value investor held Proto Labs in their Q3 2026 13F, led by Polen Capital Management. See who bought, sold and how ownership has changed by quarter.

## 13F holders

| Manager | Portfolio | Value | Change | Quarters held |
| --- | --- | --- | --- | --- |
| Polen Capital Management | 0.0% | $2.9m | Trimmed -6.9% | 3 |

## Directors buying and selling (Form 4, last 12 months)

| Date | Who | Role | Bought or sold | Shares | Value |
| --- | --- | --- | --- | --- | --- |
| 2026-09-24 | Schumacher Daniel | Chief Financial Officer | Sold | 5000 | $477k |
| 2026-09-17 | Schumacher Daniel | Chief Financial Officer | Sold | 4900 | $418k |
| 2026-09-16 | Schumacher Daniel | Chief Financial Officer | Sold | 100 | $9k |

Source: SEC filings, via moatshark (https://www.moatshark.com/s/prlb). Values traded and returns are estimates. Not investment advice. Built 2026-10-21.