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AMKOR TECHNOLOGY, INC.·4

Feb 18, 4:09 PM ET

ROGERS MARK N 4

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

Research Summary

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

What Happened Mark N. Rogers, Executive Vice President and General Counsel of Amkor Technology (AMKR), exercised options and sold shares in a series of transactions on Feb 16–17, 2026. He exercised/converted 5,000 option shares on Feb 17 at an exercise price of $7.40 ($37,000 cost) and sold those 5,000 shares in the open market at $46.92 for total proceeds of $234,600 (sale effected under a Rule 10b5‑1 plan). Separately, 1,856 restricted stock units (RSUs) vested on Feb 16; 796 of those vested shares were withheld to satisfy tax withholding obligations (value of withheld shares: $47.48 × 796 = $37,794).

Key Details

  • Transaction dates and prices:
    • Feb 16, 2026: 1,856 RSUs vested (acquired) at $0.00; 796 shares withheld for tax at $47.48 (value $37,794).
    • Feb 17, 2026: Exercised 5,000 option shares at $7.40 (cost $37,000); sold 5,000 shares at $46.92 (proceeds $234,600).
  • Notable footnotes:
    • RSU vesting: grant was 7,423 RSUs (granted Feb 16, 2023) vesting in four equal annual installments (F1, F3).
    • Tax withholding: the company withheld 796 vested shares to cover taxes and will pay those taxes to authorities on the reporting person’s behalf (F1).
    • Option details: option to acquire 200,000 shares was originally granted June 10, 2019 and fully vested per schedule (F4).
    • Sale was made pursuant to a Rule 10b5‑1 trading plan adopted Aug 1, 2025 (F2).
  • Shares owned after transaction: not specified in the provided excerpt—see the full Form 4 for total beneficial ownership.
  • Filing timeliness: Form 4 was filed Feb 18, 2026 (covers transactions on Feb 16–17); filing appears timely.

Context

  • The sequence (exercise of options at $7.40 followed immediately by an open‑market sale at $46.92) is a common pattern where exercised shares are sold soon after vest/exercise (often to cover exercise cost and taxes). The sale was executed under a pre‑established 10b5‑1 plan, which indicates the trades were pre‑planned rather than ad hoc.

Insider Transaction Report

Form 4
Period: 2026-02-16
AMKOR TECHNOLOGY, INC.AMKR
ROGERS MARK N
EVP & General Counsel
Transactions
  • Exercise/Conversion

    Common Stock

    2026-02-16+1,856→ 25,718 total
  • Tax Payment

    Common Stock

    [F1]
    2026-02-16$47.48/sh−796$37,794→ 24,922 total
  • Exercise/Conversion

    Common Stock

    2026-02-17$7.40/sh+5,000$37,000→ 29,922 total
  • Sale

    Common Stock

    [F2]
    2026-02-17$46.92/sh−5,000$234,600→ 24,922 total
  • Exercise/Conversion

    Restricted Stock Units

    [F3]
    2026-02-16−1,856→ 1,855 total
    Exercise: $0.00→ Common Stock (1,856 underlying)
  • Exercise/Conversion

    Employee Stock Option (Right-to-Buy)

    [F4]
    2026-02-17−5,000→ 100,000 total
    Exercise: $7.40From: 2020-06-10Exp: 2029-06-10→ Common Stock (5,000 underlying)
Footnotes (4)
  • [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]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.
  • [F3]On the Grant Date, the Reporting Person was granted 7,423 RSUs which vest in four equal annual installments beginning on the first anniversary of the Grant Date.
  • [F4]This stock option (the "Option") to acquire 200,000 shares of the Issuer's 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|2026-02-18

Documents

1 file
  • 4
    wk-form4_1771448939.xmlPrimary

    FORM 4