Amkor CFO logs RSU vesting, tax share withholding

Amkor Technology CFO Megan Faust reported RSU vesting and related share transactions.

Rhea-AI Filing Summary

Amkor Technology CFO Megan Faust reported RSU vesting and related share transactions. On February 20, 2026, restricted stock units converted into common stock in multiple exercises, including 16,805 and 18,106 RSUs. The resulting common shares increased her direct ownership.

To cover tax withholding obligations tied to these vestings, the company withheld 7,201 and 7,759 shares of common stock at a price of $47.94 per share, described as tax-withholding dispositions rather than open-market sales. After these transactions, Faust continued to hold common stock directly.

Insider Trade Summary

34,911 shares exercised/converted

Exercise 6 txns

Insider Faust Megan

Role CFO

Type	Security	Shares	Price	Value
Exercise	Restricted Stock Units	16,805	$0.00	$0.00
Exercise	Restricted Stock Units	18,106	$0.00	$0.00
Exercise	Common Stock	16,805	$0.00	$0.00
Exercise Price or Tax Liability	Common Stock	7,201	$47.94	$345K
Exercise	Common Stock	18,106	$0.00	$0.00
Exercise Price or Tax Liability	Common Stock	7,759	$47.94	$372K

Holdings After Transaction: Restricted Stock Units — 53,028 contracts (Direct); Common Stock — 127,175 shares (Direct)

Footnotes (4)

1. 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 20, 2024 (the "2024 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.
2. F2. The transaction represents shares withheld by the Issuer in connection with the vesting of certain RSUs granted to the Reporting Person on February 20, 2025 (the "2025 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.
3. F3. Represents shares of the Issuer's common stock underlying time-vested RSUs on the 2024 Grant Date pursuant to the Issuer's Equity Incentive Plan. 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 2024 Grant Date and annually thereafter, such that 100% will be vested on the third anniversary of the 2024 Grant Date.
4. F4. Represents shares of the Issuer's common stock underlying time-vested restricted stock units granted on the 2025 Grant Date pursuant to the Issuer's Equity Incentive Plan. 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 2025 Grant Date and annually thereafter, such that 100% will be vested on the third anniversary of the 2025 Grant Date.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider activity did Amkor Technology (AMKR) report for CFO Megan Faust?

Amkor Technology reported that CFO Megan Faust had restricted stock units vest and convert into common shares, with some shares withheld to cover tax obligations. These transactions were primarily derivative exercises and tax-withholding dispositions under the company’s equity incentive plan.

Were Megan Faust’s AMKR share transactions open-market buys or sells?

The reported AMKR transactions were not open-market buys or sells. They involved exercises of restricted stock units into common shares and tax-withholding dispositions, where shares were withheld by Amkor to satisfy Faust’s tax obligations related to equity awards.

How many Amkor (AMKR) restricted stock units did Megan Faust have vest?

Megan Faust had restricted stock units vest in separate blocks, including 16,805 and 18,106 RSUs that converted into Amkor common stock. These RSUs were granted under the company’s equity incentive plan as compensation for her service as an officer.

What price was used for the AMKR tax-withholding share dispositions?

For the tax-withholding dispositions, Amkor withheld common shares from Megan Faust at a price of $47.94 per share. These withheld shares were used to satisfy her tax obligations arising from RSU vesting, with the company paying the taxes on her behalf.

Why did Amkor (AMKR) withhold shares from Megan Faust upon RSU vesting?

Amkor withheld shares from Megan Faust when her RSUs vested to cover required tax withholding. Instead of paying cash, a portion of the vested shares was retained by the company, which then paid the associated tax liabilities on her behalf under the equity plan.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 02/24/2026 - 04:10 PM Learn about SEC filing dates

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^*

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)
02/20/2026

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	02/20/2026		M		16,805	A	$0	124,029	D
Common Stock	02/20/2026		F(1)		7,201	D	$47.94	116,828	D
Common Stock	02/20/2026		M		18,106	A	$0	134,934	D
Common Stock	02/20/2026		F(2)		7,759	D	$47.94	127,175	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	02/20/2026		M			16,805	(3)	(3)	Common Stock	16,805	$0	16,810	D
Restricted Stock Units	$0	02/20/2026		M			18,106	(4)	(4)	Common Stock	18,106	$0	36,218	D

Explanation of Responses:

1. 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 20, 2024 (the "2024 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.

2. The transaction represents shares withheld by the Issuer in connection with the vesting of certain RSUs granted to the Reporting Person on February 20, 2025 (the "2025 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.

3. Represents shares of the Issuer's common stock underlying time-vested RSUs on the 2024 Grant Date pursuant to the Issuer's Equity Incentive Plan. 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 2024 Grant Date and annually thereafter, such that 100% will be vested on the third anniversary of the 2024 Grant Date.

4. Represents shares of the Issuer's common stock underlying time-vested restricted stock units granted on the 2025 Grant Date pursuant to the Issuer's Equity Incentive Plan. 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 2025 Grant Date and annually thereafter, such that 100% will be vested on the third anniversary of the 2025 Grant Date.

Remarks:

	/s/ Mark N. Rogers, Attorney-in-Fact for Megan Faust	02/24/2026
	** 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.
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