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Amkor (NASDAQ: AMKR) director converts RSUs into shares and gets new 2,613 RSU award

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

Rhea-AI Filing Summary

Amkor Technology director Tily Gil C. reported equity compensation activity involving restricted stock units. On May 13, 2026, 9,893.0573 RSUs vested and were converted into 9,893 shares of common stock, increasing her direct holdings to 118,699 shares. A small 0.0573 RSU portion accrued as dividend equivalent units was settled in cash.

On the same date, she received a new award of 2,613 RSUs under Amkor’s 2021 Equity Incentive Plan, which may convert into the same number of common shares upon future vesting. Following these transactions, she directly holds 118,699 common shares and 2,613 unvested RSUs.

Positive

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Insider Tily Gil C.
Role null
Type Security Shares Price Value
Exercise Restricted Stock Units 9,893.057 $0.00 --
Grant/Award Restricted Stock Units 2,613 $0.00 --
Exercise Common Stock 9,893 $0.00 --
Holdings After Transaction: Restricted Stock Units — 0 shares (Direct, null); Common Stock — 118,699 shares (Direct, null)
Footnotes (1)
  1. On May 15, 2025, the Reporting Person was granted 9,789 time-vested restricted stock units ("RSUs") pursuant to the Amkor Technology, Inc. (the "Issuer") 2021 Equity Incentive Plan, as amended (the "Plan"), and the applicable award agreement (the "2025 RSUs"). In connection with the vesting of the 2025 RSUs on May 13, 2026: (i) 0.0573 of the 2025 RSUs, which had accrued as dividend equivalent units ("DEUs") with each DEU representing an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued, were settled in cash; and (ii) the remainder of the 2025 RSUs, including 104 DEUs, converted into common stock of the Issuer on a one-for-one basis. Represents shares of common stock underlying RSUs granted on May 13, 2026 (the "Grant Date") pursuant to the Plan (the "2026 RSUs"). Subject to the terms and conditions of the applicable award agreement, the 2026 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 2026 RSUs were awarded for no consideration other than the Reporting Person's service as a director of the Issuer.
RSUs converted 9,893.0573 RSUs 2025 RSUs vested and converted on May 13, 2026
Common shares acquired 9,893 shares Common stock received from RSU conversion
Shares held after transactions 118,699 shares Direct common stock holdings following Form 4 transactions
New RSU grant 2,613 RSUs 2026 RSUs granted on May 13, 2026
RSUs settled in cash 0.0573 RSUs Dividend equivalent units from 2025 RSUs settled in cash
Unvested RSUs after grant 2,613 RSUs Direct RSU holdings following new 2026 award
Restricted Stock Units financial
"Represents shares of common stock underlying 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.
dividend equivalent units financial
"0.0573 of the 2025 RSUs, which had accrued as dividend equivalent units"
Dividend equivalent units are bookkeeping credits that mirror cash dividends paid on actual shares, granted to holders of stock-based awards such as restricted stock units or deferred compensation. They matter to investors because they increase a company’s reported employee compensation cost and can lead to issuance of more shares or cash payouts over time, similar to extra pay linked to ownership that affects shareholder dilution and corporate cash flow.
2021 Equity Incentive Plan financial
"pursuant to the Amkor Technology, Inc. 2021 Equity Incentive Plan, as amended"
time-vested restricted stock units financial
"was granted 9,789 time-vested restricted stock units ("RSUs")"
award agreement financial
"pursuant to the Amkor Technology, Inc. 2021 Equity Incentive Plan, as amended and the applicable award agreement"
An award agreement is a legal contract that spells out the terms of a pay or equity grant—such as stock options, restricted shares, or cash bonuses—given to an employee, director or consultant. It describes what is being granted, any conditions for keeping it (for example, earning it over time or meeting performance targets), and what happens if the person leaves or breaks rules. Investors care because these agreements affect company costs, potential share dilution and how executives are motivated and rewarded.
Form 4 Insider Transactions: What Each Field Means →
SEC Form 4
FORM 4UNITED 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*
Tily Gil C.
(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)
XDirector10% 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)
XForm 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)
CodeVAmount(A) or (D)Price
Common Stock05/13/2026M9,893(1)A$0(1)118,699(1)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)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Restricted Stock Units(1)05/13/2026M9,893.0573 (1) (1)Common Stock9,893.0573$00D
Restricted Stock Units(2)05/13/2026A2,613 (2) (2)Common Stock2,613$02,613D
Explanation of Responses:
1. On May 15, 2025, the Reporting Person was granted 9,789 time-vested restricted stock units ("RSUs") pursuant to the Amkor Technology, Inc. (the "Issuer") 2021 Equity Incentive Plan, as amended (the "Plan"), and the applicable award agreement (the "2025 RSUs"). In connection with the vesting of the 2025 RSUs on May 13, 2026: (i) 0.0573 of the 2025 RSUs, which had accrued as dividend equivalent units ("DEUs") with each DEU representing an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued, were settled in cash; and (ii) the remainder of the 2025 RSUs, including 104 DEUs, converted into common stock of the Issuer on a one-for-one basis.
2. Represents shares of common stock underlying RSUs granted on May 13, 2026 (the "Grant Date") pursuant to the Plan (the "2026 RSUs"). Subject to the terms and conditions of the applicable award agreement, the 2026 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 2026 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 Gil C. Tily05/15/2026
** Signature of Reporting PersonDate
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

FAQ

What insider transactions did Amkor (AMKR) director Tily Gil C. report?

She reported equity compensation activity, not open-market trades. On May 13, 2026, 9,893.0573 RSUs converted into 9,893 common shares, and she received a new grant of 2,613 RSUs, all as part of Amkor’s 2021 Equity Incentive Plan.

How many Amkor (AMKR) shares does Tily Gil C. hold after the Form 4?

After the reported transactions, she directly holds 118,699 shares of Amkor common stock. These shares result mainly from RSUs that vested and converted into stock rather than market purchases, reflecting routine director equity compensation activity.

What new restricted stock units did Amkor (AMKR) grant to Tily Gil C.?

Amkor granted her 2,613 new RSUs on May 13, 2026 under the 2021 Equity Incentive Plan. These 2026 RSUs vest in full on the earlier of one year from the grant date or the next annual stockholders’ meeting, then convert one-for-one into common shares.

Were any of Tily Gil C.’s Amkor (AMKR) RSUs settled in cash?

A very small portion, 0.0573 of the 2025 RSUs that had accrued as dividend equivalent units, was settled in cash upon vesting. The remaining 9,893 RSUs, including 104 dividend equivalent units, converted into Amkor common stock on a one-for-one basis.

Did the Amkor (AMKR) Form 4 show any open-market stock sales or purchases?

No open-market buys or sells were reported. The Form 4 shows RSUs vesting and converting into 9,893 common shares and a new grant of 2,613 RSUs, all at a stated price of $0.00 per unit as compensation for board service.

What plan governs the RSU awards reported by Amkor (AMKR) director Tily Gil C.?

Both the vested 2025 RSUs and newly granted 2026 RSUs were issued under Amkor Technology’s 2021 Equity Incentive Plan. This plan provides time-vested RSU awards to directors, which typically convert into common stock on a one-for-one basis upon vesting.