ROGERS MARK N 4

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

AI-generated summary of this filing

Updated Mar 19, 2026

Amkor (AMKR) EVP Mark Rogers Exercises Options, Sells 5,000 Shares

What Happened

Mark N. Rogers, EVP & General Counsel of Amkor Technology (AMKR), exercised stock options to acquire 5,000 shares at $7.40 per share (cost $37,000) and sold those 5,000 shares the same day in an open-market transaction at $44.54 per share, generating proceeds of $222,700 (transactions dated Mar 16, 2026). The filing also records a derivative disposition tied to the exercise.

Key Details

Transaction date: March 16, 2026.
Exercise: 5,000 shares at $7.40 each — total $37,000 (code M).
Sale: 5,000 shares at $44.54 each — total proceeds $222,700 (code S).
Derivative disposition: 5,000 shares reported as disposed at $0.00 in connection with the exercise (reported as a derivative conversion).
Shares owned after transaction: Not disclosed in the provided excerpt of the Form 4.
Footnotes: Sale was executed under a Rule 10b5-1 trading plan adopted Aug 1, 2025 (F1). The option was part of a 200,000-share grant dated June 10, 2019 that vested over four years (F2).
Filing: Form 4 filed Mar 18, 2026 for transactions on Mar 16, 2026 — appears timely (no late filing flagged).

Context

Because the exercise and open-market sale occurred the same day, this represents an exercise followed by an immediate sale of the shares (commonly a cashless exercise + sale). The sale was implemented under a pre-established 10b5-1 plan, which can indicate pre-planned routine disposition rather than ad hoc trading.

Form 4

Period: 2026-03-16

EVP & General Counsel

Transactions

Exercise/Conversion
Common Stock
2026-03-16$7.40/sh+5,000$37,000→ 43,904 total
Sale
Common Stock
[F1]
2026-03-16$44.54/sh−5,000$222,700→ 38,904 total
Exercise/Conversion
Employee Stock Option (Right-to-Buy)
[F2]
2026-03-16−5,000→ 95,000 total
Exercise: $7.40From: 2020-06-10Exp: 2029-06-10→ Common Stock (5,000 underlying)

Footnotes (2)

[F1]The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on August 1, 2025.
[F2]This stock option (the "Option") to acquire 200,000 shares of Amkor Technology, Inc. common stock (the "Option Shares") was granted on June 10, 2019 (the "Option Grant Date") and vested over four years as follows: (i) with respect to 25% of the Option Shares, on the first anniversary of the Option Grant Date; and (ii) with respect to the remainder of the Option Shares, in equal quarterly installments thereafter, such that 100% of the Option vested on the fourth anniversary of the Option Grant Date.

Signature

/s/ Mark N. Rogers|2026-03-18

1 file