# Amprius Technologies (AMPX): value investors who own it

1 value investor held Amprius Technologies in their Q3 2026 13F, led by Polen Capital Management.

## 13F holders

| Manager | Portfolio | Value | Change | Quarters held |
| --- | --- | --- | --- | --- |
| Polen Capital Management | 0.1% | $6.5m | Added +10% | 4 |

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

| Date | Who | Role | Bought or sold | Shares | Value |
| --- | --- | --- | --- | --- | --- |
| 2026-08-24 | Stepien Thomas M | Chief Executive Officer | Sold | 8000 | $80k |
| 2026-08-21 | Sun Kang | Director | Sold | 62101 | $642k |
| 2026-08-21 | Stefan Constantin Ionel | Chief Technology Officer | Sold | 29681 | $307k |
| 2026-08-21 | Stepien Thomas M | Chief Executive Officer | Sold | 23529 | $243k |

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