# MKS Instrs (MKSI): value investors who own it | moatshark

1 value investor held MKS Instrs in their Q2 2026 13F, led by Maverick Capital. See who bought, sold and how ownership has changed by quarter.

## 13F holders

| Manager | Portfolio | Value | Change | Quarters held |
| --- | --- | --- | --- | --- |
| Maverick Capital | 0.0% | $912k | Trimmed -72% | 2 |

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

| Date | Who | Role | Bought or sold | Shares | Value |
| --- | --- | --- | --- | --- | --- |
| 2026-09-01 | Mora Elizabeth | Director | Sold | 300 | $75k |
| 2026-08-14 | Lee John Tseng-Chung | President & CEO | Sold | 10000 | $3.0m |
| 2026-08-03 | Williams John Edward | EVP & GM, PSD | Sold | 457 | $132k |

Source: SEC filings, via moatshark (https://www.moatshark.com/s/mksi). Values traded and returns are estimates. Not investment advice. Built 2026-10-23.