# Mattel (MAT): value investors who own it | moatshark

1 value investor held Mattel in their Q3 2026 13F, led by Southeastern Asset Management. See who bought, sold and how ownership has changed by quarter.

## 13F holders

| Manager | Portfolio | Value | Change | Quarters held |
| --- | --- | --- | --- | --- |
| Southeastern Asset Management | 8.9% | $171m | Trimmed -3.8% | 36 |

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

| Date | Who | Role | Bought or sold | Shares | Value |
| --- | --- | --- | --- | --- | --- |
| 2026-08-31 | Isaias Zanatta Roberto Jacobo | EVP & Chief Supply Chain Offr | Sold | 39083 | $587k |

## Fund holders

| Fund | Manager | Weight | Value | As at |
| --- | --- | --- | --- | --- |
| Longleaf Partners Global Fund | Southeastern Asset Management | 5.7% | $39.7m | 2026-06-30 |

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