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).
1. Name and Address of Reporting Person*
Stone John Charles

(Last) (First) (Middle)
1514 ROCKROSE WAY

(Street)
CHANDLER AZ 85248

(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)
02/11/2021
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 02/11/2021 M 65,625 A $9.48 90,641 D
Common Stock 02/11/2021 S 65,625 D $21.35(1) 25,016 D
Common Stock 02/11/2021 M 18,750 A $9.86 43,766 D
Common Stock 02/11/2021 S 18,750 D $21.35(1) 25,016 D
Common Stock 2,000 I Held in Trust
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
Employee Stock Option (Right-to-Buy) $9.48 02/11/2021 M 65,625 02/15/2020(2) 02/15/2029 Common Stock 65,625 $0.00 84,375 D
Employee Stock Option (Right-To-Buy) $9.86 02/11/2021 M 18,750 02/27/2018(3) 02/27/2027 Common Stock 18,750 $0.00 9,375 D
Explanation of Responses:
1. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from 20.95 to 21.54.
2. The stock option was granted on February 15, 2019 and vests as follows: 25% of the shares vest on the first anniversary of the grant date and 1/16th of the option vests each quarter thereafter, such that 100% of the option will be vested on the fourth anniversary of the grant date.
3. This stock option was granted on February 27, 2017 and vests as follows: 25% of the shares vest on the first anniversary of the grant date and 1/16 of the option vests each quarter thereafter, such that 100% of the option will vest on the fourth anniversary of the grant date.
Remarks:
Mark N. Rogers, Attorney-in-Fact for John C. Stone 02/15/2021
** 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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