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  4. [Form 4] AMKOR TECHNOLOGY, INC. Insider Trading Activity

Amkor (AMKR) EVP Haghighi granted 18,185 RSUs and PSU shares vest

Filing Impact
(Moderate)
Filing Sentiment
(Neutral)
Form Type
4

Rhea-AI Filing Summary

Amkor Technology Executive Vice President Farshad Haghighi reported multiple equity compensation transactions. He received 18,185 time-vested restricted stock units on February 18, 2026, granted at no cash cost in recognition of his service. These RSUs vest in three equal annual installments beginning on the first anniversary of the grant date, with full vesting on the third anniversary.

On the same date, 2,003 and 5,594 common shares vested from performance stock units that were originally granted in 2024 and 2025. These awards vested after Amkor met a basic earnings-per-share performance goal over a one-year period from January 1, 2025 to December 31, 2025. To cover related tax obligations at a price of $46.74 per share, 1,038 and 2,621 shares of common stock were withheld and delivered back to the company, reducing out-of-pocket taxes for the executive while keeping these dispositions clearly tied to tax withholding rather than open-market sales.

Positive

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Negative

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Insider Haghighi Farshad
Role Executive Vice President
Type Security Shares Price Value
Grant/Award Restricted Stock Units 18,185 $0.00 --
Grant/Award Common Stock 2,003 $0.00 --
Tax Withholding Common Stock 1,038 $46.74 $49K
Grant/Award Common Stock 5,594 $0.00 --
Tax Withholding Common Stock 2,621 $46.74 $123K
Holdings After Transaction: Restricted Stock Units — 18,185 shares (Direct); Common Stock — 11,330 shares (Direct)
Footnotes (1)
  1. This Form 4 reports the vesting on February 18, 2026 of 2,003 shares of common stock of Amkor Technology, Inc. (the "Issuer") underlying performance-vested restricted stock units ("PSUs") granted to the Reporting Person on February 20, 2024 pursuant to the Issuer's Equity Incentive Plan, as amended, and the related award agreement. The PSUs vested based on the attainment of a basic earnings per share performance goal over a one-year performance period beginning January 1, 2025 and ending on December 31, 2025. The transaction represents shares of the Issuer's common stock withheld by the Issuer in connection with the vesting of PSUs to satisfy the Reporting Person's tax withholding obligations. The Issuer will pay these taxes on behalf of the Reporting Person. The transaction represents the vesting on February 18, 2026 of 5,594 shares of common stock of the Issuer's underlying PSUs granted to the Reporting Person on February 20, 2025 pursuant to the Issuer's Equity Incentive Plan, as amended, and the related award agreement. The PSUs vested based on the attainment of a basic earnings per share performance goal over a one-year performance period beginning January 1, 2025 and ending on December 31, 2025. Represents shares of the Issuer's common stock underlying time-vested restricted stock units granted on February 18, 2026 (the "Grant Date") pursuant to the Issuer's Equity Incentive Plan (the "RSUs"). The RSUs were awarded for no consideration other than the Reporting Person's service as an officer of the Issuer and will vest in three equal annual installments beginning on the first anniversary of the Grant Date and annually thereafter, such that 100% will be vested on the third anniversary of the Grant Date.
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Form 4 Insider Transactions: What Each Field Means →
SEC Form 4
FORM 4 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number: 3235-0287
Estimated average burden
hours per response: 0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
1. Name and Address of Reporting Person*
Haghighi Farshad
(Last) (First) (Middle)
2045 EAST INNOVATION CIRCLE
(Street)
TEMPE AZ 85284
(City) (State) (Zip)
2. Issuer Name and Ticker or Trading Symbol
AMKOR TECHNOLOGY, INC. [ AMKR ] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director 10% Owner
X Officer (give title below) Other (specify below)
Executive Vice President
3. Date of Earliest Transaction (Month/Day/Year)
02/18/2026
4. If Amendment, Date of Original Filed (Month/Day/Year)
 6. Individual or Joint/Group Filing (Check Applicable Line)
X Form filed by One Reporting Person
Form filed by More than One Reporting Person
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V Amount (A) or (D) Price
Common Stock 02/18/2026 A(1) 2,003 A $0 11,330 D
Common Stock 02/18/2026 F(2) 1,038 D $46.74 10,292 D
Common Stock 02/18/2026 A(3) 5,594 A $0 15,886 D
Common Stock 02/18/2026 F(2) 2,621 D $46.74 13,265 D
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year) 7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Restricted Stock Units $0 02/18/2026 A 18,185 (4) (4) Common Stock 18,185 $0 18,185 D
Explanation of Responses:
1. This Form 4 reports the vesting on February 18, 2026 of 2,003 shares of common stock of Amkor Technology, Inc. (the "Issuer") underlying performance-vested restricted stock units ("PSUs") granted to the Reporting Person on February 20, 2024 pursuant to the Issuer's Equity Incentive Plan, as amended, and the related award agreement. The PSUs vested based on the attainment of a basic earnings per share performance goal over a one-year performance period beginning January 1, 2025 and ending on December 31, 2025.
2. The transaction represents shares of the Issuer's common stock withheld by the Issuer in connection with the vesting of PSUs to satisfy the Reporting Person's tax withholding obligations. The Issuer will pay these taxes on behalf of the Reporting Person.
3. The transaction represents the vesting on February 18, 2026 of 5,594 shares of common stock of the Issuer's underlying PSUs granted to the Reporting Person on February 20, 2025 pursuant to the Issuer's Equity Incentive Plan, as amended, and the related award agreement. The PSUs vested based on the attainment of a basic earnings per share performance goal over a one-year performance period beginning January 1, 2025 and ending on December 31, 2025.
4. Represents shares of the Issuer's common stock underlying time-vested restricted stock units granted on February 18, 2026 (the "Grant Date") pursuant to the Issuer's Equity Incentive Plan (the "RSUs"). The RSUs were awarded for no consideration other than the Reporting Person's service as an officer of the Issuer and will vest in three equal annual installments beginning on the first anniversary of the Grant Date and annually thereafter, such that 100% will be vested on the third anniversary of the Grant Date.
Remarks:
/s/ Mark N. Rogers, Attorney-in-Fact for Farshad Haghighi 02/20/2026
** Signature of Reporting Person Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

Source: View Original Filing on SEC EDGAR

FAQ

What equity awards did Amkor (AMKR) EVP Farshad Haghighi receive on February 18, 2026?

On February 18, 2026, Farshad Haghighi received 18,185 time-vested RSUs from Amkor. These restricted stock units were granted for his service as an officer and will vest in three equal annual installments, fully vesting on the third anniversary of the grant date.

How many Amkor (AMKR) performance stock units vested for Farshad Haghighi?

A total of 7,597 common shares vested from Amkor performance stock units for Farshad Haghighi. This includes 2,003 shares from 2024 PSUs and 5,594 shares from 2025 PSUs, both tied to achieving a basic earnings-per-share goal over a one-year performance period.

What performance period determined the vesting of Amkor (AMKR) PSUs for Haghighi?

The PSUs vested based on earnings-per-share performance over a one-year period from January 1, 2025 to December 31, 2025. Amkor’s attainment of this basic EPS performance goal triggered vesting of the 2,003-share and 5,594-share performance-based awards.

Why were some Amkor (AMKR) shares disposed of in Farshad Haghighi’s Form 4?

The dispositions reflect tax-withholding transactions, not open-market sales. Amkor withheld 1,038 and 2,621 shares of common stock at $46.74 per share to cover Haghighi’s tax obligations arising from PSU vesting, with the company paying those taxes on his behalf.

How will Farshad Haghighi’s new Amkor (AMKR) RSUs vest over time?

The 18,185 newly granted RSUs will vest in three equal annual installments. Vesting begins on the first anniversary of the February 18, 2026 grant date and continues annually, so 100% of the award is vested by the third anniversary of the grant date.