ALEXANDER DOUGLAS A 4

What Happened

• Alexander A. Douglas, a director of Amkor Technology, exercised stock options to acquire 4,657 shares at $9.45 (cost $44,009) and 343 shares at $8.51 (cost $2,919) on May 5, 2026. He then sold those same 5,000 shares in open-market transactions at $76.58 each, generating gross sale proceeds of $382,900. The option instruments tied to those shares were marked disposed at $0 (reflecting the exercise/termination of the options).

Key Details

• Transaction date: May 5, 2026.
• Exercises: 4,657 shares @ $9.45 (total $44,009) and 343 shares @ $8.51 (total $2,919).
• Sales: 4,657 shares @ $76.58 (total $356,633) and 343 shares @ $76.58 (total $26,267); gross proceeds $382,900.
• Approximate pre-tax net proceeds (gross sales minus exercise cost): $335,972.
• Shares owned after transaction: Not specified in the filing.
• Footnotes: The 4,657-share option was granted Feb 6, 2018 and vested May 1, 2018 (F1). A 20,000-share option grant dated May 1, 2018 (vested May 1, 2019) is noted in the filing (F2); only 343 shares from relevant grants were exercised here.
• Filing timeliness: Report filed May 7, 2026 for transactions on May 5, 2026 — appears timely (no late filing noted).

Context

• This was a common cashless-style exercise and immediate sale: the director exercised vested options and sold the resulting shares the same day. Such transactions frequently cover exercise costs and taxes and are generally considered routine; they do not, by themselves, indicate management sentiment about the company's outlook.