# Acm Research (ACMR): value investors who own it | moatshark

2 value investors held Acm Research in their Q3 2026 13F, led by Southeastern Asset Management, Dodge & Cox.

## 13F holders

| Manager | Portfolio | Value | Change | Quarters held |
| --- | --- | --- | --- | --- |
| Southeastern Asset Management | 0.9% | $17.7m | Trimmed -82% | 5 |
| Dodge & Cox | 0.0% | $14.8m | Trimmed -2.9% | 8 |

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

| Date | Who | Role | Bought or sold | Shares | Value |
| --- | --- | --- | --- | --- | --- |
| 2026-09-09 | Wang David H | See Remarks | Sold | 33493 | $2.5m |
| 2026-09-09 | Wang David H | See Remarks | Sold | 18934 | $1.4m |
| 2026-09-09 | Wang David H | See Remarks | Sold | 11666 | $882k |
| 2026-09-09 | Wang David H | See Remarks | Sold | 4807 | $369k |
| 2026-09-09 | Wang David H | See Remarks | Sold | 1100 | $85k |
| 2026-09-08 | Wang David H | See Remarks | Sold | 51374 | $4.0m |
| 2026-09-08 | Wang David H | See Remarks | Sold | 12323 | $962k |
| 2026-09-08 | Wang David H | See Remarks | Sold | 4803 | $365k |
| 2026-09-08 | Wang David H | See Remarks | Sold | 1500 | $118k |
| 2026-08-20 | McKechnie Mark | See Remarks | Sold | 30365 | $2.4m |
| 2026-08-20 | McKechnie Mark | See Remarks | Sold | 13625 | $1.0m |
| 2026-08-20 | McKechnie Mark | See Remarks | Sold | 11209 | $873k |
| 2026-08-18 | Dun Haiping | Director | Sold | 3400 | $276k |
| 2026-08-18 | Dun Haiping | Director | Sold | 1200 | $96k |
| 2026-08-18 | Dun Haiping | Director | Sold | 400 | $33k |

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