CHURCHILL WINSTON J 4

What Happened

• Winston J. Churchill, a director of Amkor Technology, exercised stock options and completed an open-market sale on June 12, 2026. He acquired 5,000 shares by exercising options at $19.39 per share (cost $96,950) and sold 5,000 shares in the open market at $78.20 per share (proceeds $391,000). The filing also shows a disposition of 5,000 shares at $0.00 in connection with the derivative transaction (see Key Details).

Key Details

• Transaction date: 2026-06-12; Form 4 filed 2026-06-16 (filed within the 2-business-day window).
• Exercise: 5,000 shares acquired at $19.39 each, total $96,950.
• Open-market sale: 5,000 shares sold at $78.20 each, proceeds $391,000.
• Derivative disposition: 5,000 shares shown disposed at $0.00 (reported as a derivative disposition).
• Shares owned after transaction: not specified in this Form 4.
• Footnote: The options exercised come from a grant of 20,000 options awarded May 18, 2021 that vested in full on May 17, 2022.

Context

• This filing reflects an option exercise combined with an immediate sale of some shares. The zero-dollar derivative disposition typically means shares were surrendered/used in the exercise process (commonly to cover option cost or tax withholding) rather than sold for cash. Purchases (option exercises) can be a more direct bullish signal than sales, but here Churchill both acquired shares via exercise and sold shares in the same transaction.