Amkor Technology (AMKR) CFO logs PSU vesting, RSU grant and tax share withholding

Rhea-AI Filing Summary

Amkor Technology CFO Megan Faust reported multiple equity-related transactions on February 18, 2026. She acquired 4,538 shares of common stock and 9,325 shares of common stock upon vesting of performance stock units that were tied to a basic earnings per share goal for the period from January 1, 2025 through December 31, 2025.

To cover related tax obligations, 1,945 shares and 3,996 shares of common stock were withheld by Amkor at a price of $46.74 per share, as a tax-withholding disposition rather than an open-market sale. Faust also received a new grant of 26,743 restricted stock units, which were awarded for her service as an officer and will vest in three equal annual installments beginning on the first anniversary of the grant date.

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

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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^*

Faust Megan

(Last) (First) (Middle)

2045 E 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)
	CFO

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)		4,538	A	$0	103,840	D
Common Stock	02/18/2026		F(2)		1,945	D	$46.74	101,895	D
Common Stock	02/18/2026		A(3)		9,325	A	$0	111,220	D
Common Stock	02/18/2026		F(2)		3,996	D	$46.74	107,224	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		26,743		(4)	(4)	Common Stock	26,743	$0	26,743	D

Explanation of Responses:

1. This Form 4 reports the vesting on February 18, 2026 of 4,538 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 9,325 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 Megan Faust	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).
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FAQ

What equity awards did Amkor (AMKR) CFO Megan Faust report on February 18, 2026?

On February 18, 2026, Amkor CFO Megan Faust reported vesting of 4,538 and 9,325 performance-based common shares and a new grant of 26,743 restricted stock units. These awards were issued under Amkor’s Equity Incentive Plan in connection with her role as an officer.

How were the performance stock units for Amkor (AMKR) CFO Megan Faust earned?

Megan Faust’s performance stock units vested based on achieving a basic earnings per share performance goal over a one-year period from January 1, 2025 through December 31, 2025. Upon vesting, the units converted into 4,538 and 9,325 shares of Amkor common stock, respectively.

Did Amkor (AMKR) CFO Megan Faust sell shares in the open market in this Form 4?

The Form 4 shows dispositions coded as “F,” representing 1,945 and 3,996 shares withheld by Amkor to satisfy tax withholding obligations. The company will pay these taxes on her behalf, and the transactions do not reflect open-market sales by the CFO.

What are the vesting terms of the 26,743 RSUs granted to Amkor (AMKR) CFO Megan Faust?

The 26,743 restricted stock units granted to Megan Faust on February 18, 2026 vest in three equal annual installments. Vesting begins on the first anniversary of the grant date and continues annually, so 100% of the RSUs will be vested on the third anniversary.

How many Amkor (AMKR) common shares did CFO Megan Faust hold after the reported transactions?

After the February 18, 2026 transactions, the final reported line shows Megan Faust directly holding 107,224 shares of Amkor common stock. This figure reflects grants, vesting of performance units, and shares withheld for tax obligations reported in this Form 4.