Amkor awards 2,613 RSUs to director Liao

Amkor Technology, Inc. granted 2,613 time-vested restricted stock units (RSUs) to director Daniel JL Liao on May 13, 2026 under its 2021 Equity Incentive Plan.

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Form Type

Rhea-AI Filing Summary

Amkor Technology, Inc. granted 2,613 time-vested restricted stock units (RSUs) to director Daniel JL Liao on May 13, 2026 under its 2021 Equity Incentive Plan.

The RSUs convert one-for-one into common stock and will vest in full on the earlier of the first anniversary of the grant date or the company’s first annual stockholders’ meeting following that date. They were awarded for no cash consideration, as equity compensation for Liao’s board service, and he now directly holds 2,613 RSUs.

Insider Trade Summary

Grant/Award: 2,613 shares

Grant/Award 1 txn

Insider Liao Daniel JL

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Restricted Stock Units	2,613	$0.00	$0.00

Holdings After Transaction: Restricted Stock Units — 2,613 contracts (Direct)

Footnotes (1)

F1. Represents shares of common stock underlying time-vested restricted stock units ("RSUs") granted on May 13, 2026 (the "Grant Date") pursuant to the Amkor Technology, Inc. (the "Issuer") 2021 Equity Incentive Plan. Subject to the terms and conditions of the applicable award agreement, the RSUs may be converted into common stock of the Issuer on a one-for-one basis and will vest in full on the earlier of the first anniversary of the Grant Date or the date of the Issuer's first annual meeting of stockholders immediately following the Grant Date. The RSUs were awarded for no consideration other than the Reporting Person's service as a director of the Issuer.

Key Figures

RSUs granted: 2,613 units Conversion ratio: 1 share per RSU Exercise/award price: $0.00 per unit +2 more

5 metrics

RSUs granted 2,613 units Time-vested RSUs granted on May 13, 2026

Conversion ratio 1 share per RSU Each RSU convertible into one share of common stock

Exercise/award price $0.00 per unit RSUs awarded for no cash consideration

Holdings after grant 2,613 RSUs Total restricted stock units directly held after this award

Grant date May 13, 2026 Grant Date used for vesting schedule reference

Key Terms

Restricted Stock Units, 2021 Equity Incentive Plan, time-vested, Grant Date, +1 more

5 terms

Restricted Stock Units financial

"Represents shares of common stock underlying time-vested restricted stock units ("RSUs") granted on May 13, 2026"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

2021 Equity Incentive Plan financial

"pursuant to the Amkor Technology, Inc. (the "Issuer") 2021 Equity Incentive Plan"

time-vested financial

"Represents shares of common stock underlying time-vested restricted stock units ("RSUs") granted on May 13, 2026"

Time-vested describes a right—such as stock options, restricted shares, or pension benefits—that becomes fully owned by an individual only after they have waited for or worked through a specified period. For investors, it matters because these delayed ownership rules affect when insiders or employees can sell shares, which influences share supply, executive incentives, and the timing of potential stock dilution or insider-driven stock sales.

Grant Date financial

"RSUs granted on May 13, 2026 (the "Grant Date") pursuant to the Amkor Technology, Inc."

The grant date is the day a company formally gives an employee or contractor the right to receive stock-based compensation, such as stock options or restricted shares. It matters to investors because it fixes key terms—like the price, the start of the ownership clock, and when the award will affect the company’s financial statements and share count—so it can influence dilution, reported expenses, and potential future selling pressure.

annual meeting of stockholders financial

"will vest in full on the earlier of the first anniversary of the Grant Date or the date of the Issuer's first annual meeting of stockholders"

FAQ

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

What insider transaction did Amkor Technology (AMKR) report for Daniel JL Liao?

Amkor reported a grant of 2,613 restricted stock units to director Daniel JL Liao. These RSUs are equity compensation, not a market purchase, and were awarded for his service on the company’s board of directors under the 2021 Equity Incentive Plan.

How many Amkor Technology (AMKR) RSUs did director Daniel JL Liao receive?

Director Daniel JL Liao received 2,613 restricted stock units from Amkor Technology. Each RSU represents the right to receive one share of common stock, providing stock-based compensation aligned with shareholders instead of cash, contingent on the specified vesting conditions being satisfied.

When do Daniel JL Liao’s Amkor (AMKR) restricted stock units vest?

The 2,613 restricted stock units granted to Daniel JL Liao vest in full on the earlier of the first anniversary of May 13, 2026 or Amkor’s first annual stockholders’ meeting after that date, assuming the award’s terms and conditions continue to be met throughout the vesting period.

What is the conversion ratio of Daniel JL Liao’s Amkor (AMKR) RSUs to common stock?

Each of Daniel JL Liao’s 2,613 restricted stock units may be converted into one share of Amkor common stock. This one-for-one conversion ratio ties the value of his equity compensation directly to the company’s share price once the RSUs fully vest.

Did Daniel JL Liao pay cash for his Amkor Technology (AMKR) RSU grant?

No, Daniel JL Liao did not pay cash for these RSUs. The filing states the 2,613 time-vested restricted stock units were awarded for no consideration other than his service as a director, making them a stock-based component of his overall board compensation package.

Under which plan were Daniel JL Liao’s Amkor (AMKR) RSUs granted?

The RSUs granted to Daniel JL Liao were issued under Amkor Technology’s 2021 Equity Incentive Plan. This plan governs stock-based awards for eligible participants, aligning their compensation with shareholder interests through equity that vests based on service and specified conditions.

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Accepted by SEC EDGAR 05/15/2026 - 04:39 PM EDT

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^*

Liao Daniel JL

(Last)

(First)

(Middle)

2045 EAST INNOVATION CIRCLE

(Street)

TEMPE

ARIZONA

85284

(City)

(State)

(Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
AMKOR TECHNOLOGY, INC. [ AMKR ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director	10% Owner
	Officer (give title below)	Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/13/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)

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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
Restricted Stock Units	⁽¹⁾	05/13/2026		A		2,613		⁽¹⁾	⁽¹⁾	Common Stock	2,613	$0	2,613	D

Explanation of Responses:

1. Represents shares of common stock underlying time-vested restricted stock units ("RSUs") granted on May 13, 2026 (the "Grant Date") pursuant to the Amkor Technology, Inc. (the "Issuer") 2021 Equity Incentive Plan. Subject to the terms and conditions of the applicable award agreement, the RSUs may be converted into common stock of the Issuer on a one-for-one basis and will vest in full on the earlier of the first anniversary of the Grant Date or the date of the Issuer's first annual meeting of stockholders immediately following the Grant Date. The RSUs were awarded for no consideration other than the Reporting Person's service as a director of the Issuer.

Remarks:

	/s/ Mark N. Rogers, Attorney-in-Fact for Daniel Liao	05/15/2026
	** 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.
* Form 4: SEC 1474 (03-26)

Source: View Original Filing on SEC EDGAR