Hugh Yoon J. 4

What Happened
Hugh Yoon J., SVP & Corporate Controller of Mattel, had the final tranche of RSUs from an April 28, 2023 grant vest on April 28, 2026. That vesting converted 4,408 RSUs into 4,408 shares of Mattel common stock. To satisfy required tax withholding, 1,582 of those shares were automatically withheld (disposed) at $14.79/share, generating proceeds of $23,398. Net shares delivered to Mr. Yoon after withholding were 2,826 shares (4,408 issued − 1,582 withheld).

Key Details

• Transaction date: April 28, 2026; Form 4 filed April 30, 2026 (filed within the typical 2‑business‑day window).
• Primary activity: RSU vesting / conversion of derivative securities (transaction code M).
• Tax withholding: 1,582 shares withheld/disposed (transaction code F) at $14.79/share for $23,398.
• Gross value of shares issued (4,408 × $14.79): ≈ $65,194 (based on the share price used for withholding).
• Net shares received by insider: 2,826 shares.
• Original grant: 12,963 RSUs granted April 28, 2023; this was the final 34% tranche that vested on 4/28/2026 (see footnotes).
• Shares owned after the transaction: not reported in the provided filing details.

Context

• This was a scheduled RSU vesting event, not an open‑market purchase or sale; the conversion of RSUs to shares is typically routine compensation.
• The filing shows the conversion of RSUs (derivative conversion) and automatic share withholding to cover taxes — a common, non‑indicative insider cash sale.
• No 10b5‑1 plan or late filing indication is noted in the provided information.