# ATI (ATI): value investors who own it | moatshark

1 value investor held ATI 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 | 1.4% | $161m | New | 1 |

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

| Date | Who | Role | Bought or sold | Shares | Value |
| --- | --- | --- | --- | --- | --- |
| 2026-09-21 | Harris Timothy J | Senior VP and CDIO | Sold | 9000 | $1.7m |
| 2026-09-14 | Harris Timothy J | Senior VP and CDIO | Sold | 16500 | $3.2m |
| 2026-09-08 | Harris Timothy J | Senior VP and CDIO | Sold | 16500 | $3.4m |
| 2026-09-02 | Morehouse David J | Director | Sold | 2485 | $501k |
| 2026-08-31 | Harris Timothy J | Senior VP and CDIO | Sold | 16500 | $3.5m |
| 2026-08-24 | Harris Timothy J | Senior VP and CDIO | Sold | 16500 | $3.4m |
| 2026-08-17 | Fields Kimberly A | Chair, President and CEO | Sold | 9116 | $2.1m |
| 2026-08-17 | Fields Kimberly A | Chair, President and CEO | Sold | 8131 | $1.9m |
| 2026-08-17 | Fields Kimberly A | Chair, President and CEO | Sold | 4598 | $1.1m |
| 2026-08-17 | Fields Kimberly A | Chair, President and CEO | Sold | 2000 | $459k |
| 2026-08-17 | Fields Kimberly A | Chair, President and CEO | Sold | 1000 | $228k |
| 2026-07-28 | Fields Kimberly A | Chair, President and CEO | Sold | 31757 | $6.1m |

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