Engel Kevin K. 4

4 · AMKOR TECHNOLOGY, INC. · Filed Feb 18, 2026

AI-generated summary of this filing

Updated Feb 18, 2026

Amkor (AMKR) CEO Kevin K. Engel Sells 5,316 Shares

What Happened

Kevin K. Engel, President, CEO and Director of Amkor Technology (AMKR), reported RSU vesting and subsequent share sales. On Feb 16, 2026, 1,345 RSU shares converted to common stock (derivative conversion). The company withheld 559 shares to cover tax withholding (valued at $47.48 each, $26,541). On Feb 17, 2026, Engel sold 5,316 shares in an open-market transaction at $46.03 each for $244,695.
This sequence (RSU vest → shares withheld for taxes → open-market sale) is a routine insider sale tied to equity award vesting rather than a fresh purchase — typically not a bullish signal.

Key Details

Dates and prices:
- 2026-02-16: 1,345 RSU shares converted to common stock (derivative conversion) at $0.00 (vesting event).
- 2026-02-16: 559 shares withheld for tax withholding at $47.48 (total $26,541).
- 2026-02-17: 5,316 shares sold on the open market at $46.03 (total ~$244,695).
Shares owned after the transactions: not specified in the provided filing.
Footnotes:
- F1: The 559 shares were withheld by Amkor to satisfy Engel’s tax withholding; the issuer will pay these taxes on his behalf.
- F2: The RSUs originated from a Feb 16, 2023 grant of 5,567 RSUs that vest in four equal annual installments beginning Feb 16, 2024.
Filing timeliness: Form 4 was filed Feb 18, 2026 for transactions on Feb 16–17, 2026 — appears timely (no late filing indicated).

Context

This was an RSU vesting event (derivative conversion) with a routine tax-withholding share retention and an open-market sale of vested shares. That pattern is common when executives realize proceeds from vested equity; it documents monetization of compensation rather than a directional investment bet.

Form 4

Period: 2026-02-16

DirectorPresident and CEO

Transactions

Exercise/Conversion
Common Stock
2026-02-16+1,345→ 6,661 total
Tax Payment
Common Stock
[F1]
2026-02-16$47.48/sh−559$26,541→ 6,102 total
Sale
Common Stock
2026-02-17$46.03/sh−5,316$244,695→ 786 total
Exercise/Conversion
Restricted Stock Units
[F2]
2026-02-16−1,345→ 1,391 total
Exercise: $0.00→ Common Stock (1,345 underlying)

Footnotes (2)

[F1]The transaction represents shares withheld by Amkor Technology, Inc. (the "Issuer") in connection with the vesting of certain restricted stock units ("RSUs") granted to the Reporting Person on February 16, 2023 (the "Grant Date") pursuant to the Issuer's 2021 Equity Incentive Plan, as amended, and the related award agreement. These shares were withheld to satisfy the Reporting Person's tax withholding obligations. The Issuer will pay these taxes on behalf of the Reporting Person.
[F2]On the Grant Date, the Reporting Person was granted 5,567 RSUs which vest in four equal annual installments beginning on the first anniversary of the Grant Date.

Signature

/s/ Mark N. Rogers, Attorney-in-Fact for Kevin Engel|2026-02-18

1 file