STOCK TITAN

Amkor (NASDAQ: AMKR) EVP Rogers sells 5,000 shares under 10b5-1 plan

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

Rhea-AI Filing Summary

AMKOR TECHNOLOGY, INC. executive vice president and general counsel Mark N. Rogers exercised stock options and sold shares in a coordinated transaction. On May 18, 2026, he exercised options to acquire 5,000 shares of common stock at $7.40 per share and sold 5,000 shares in an open-market sale at an average price of $71.63 per share. The sale was made under a pre-arranged Rule 10b5-1 trading plan adopted on August 1, 2025. After these transactions, he directly owns 38,904 shares of Amkor common stock.

Positive

  • None.

Negative

  • None.
Insider ROGERS MARK N
Role EVP & General Counsel
Sold 5,000 shs ($358K)
Type Security Shares Price Value
Exercise Employee Stock Option (Right-to-Buy) 5,000 $0.00 --
Exercise Common Stock 5,000 $7.40 $37K
Sale Common Stock 5,000 $71.63 $358K
Holdings After Transaction: Employee Stock Option (Right-to-Buy) — 85,000 shares (Direct, null); Common Stock — 43,904 shares (Direct, null)
Footnotes (1)
  1. The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on August 1, 2025. This stock option (the "Option") to acquire 200,000 shares of Amkor Technology, Inc. common stock (the "Option Shares") was granted on June 10, 2019 (the "Option Grant Date") and vested over four years as follows: (i) with respect to 25% of the Option Shares, on the first anniversary of the Option Grant Date; and (ii) with respect to the remainder of the Option Shares, in equal quarterly installments thereafter, such that 100% of the Option vested on the fourth anniversary of the Option Grant Date.
Shares sold 5,000 shares Open-market sale of common stock on May 18, 2026
Sale price $71.63 per share Average price for 5,000 shares sold
Options exercised 5,000 shares Common stock acquired via option exercise
Option exercise price $7.40 per share Employee stock option exercise on May 18, 2026
Shares owned after 38,904 shares Direct common stock holdings following transactions
Options position after 85,000 options Employee stock options following derivative transaction entry
Original option grant 200,000 shares Option grant dated June 10, 2019
Rule 10b5-1 trading plan regulatory
"The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted..."
A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.
Employee Stock Option (Right-to-Buy) financial
"security_title: "Employee Stock Option (Right-to-Buy)""
derivative security financial
"transaction_code_description: "Exercise or conversion of derivative security""
A derivative security is a financial contract whose value comes from the price or performance of something else, such as a stock, bond, commodity, or market index. For investors it acts like an insurance policy or a wager: it can be used to protect against losses, lock in prices, or amplify gains and losses, so it can change a portfolio’s risk and potential return without owning the underlying asset directly.
open-market sale financial
"transaction_action: "open-market sale""
An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.
vested financial
"such that 100% of the Option vested on the fourth anniversary of the Option Grant Date."
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).
X
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*
ROGERS MARK N

(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)
Director10% Owner
XOfficer (give title below)Other (specify below)
EVP & General Counsel
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
05/18/2026
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 Stock05/18/2026M5,000A$7.443,904D
Common Stock05/18/2026S(1)5,000D$71.6338,904D
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
Employee Stock Option (Right-to-Buy)$7.405/18/2026M5,00006/10/2020(2)06/10/2029(2)Common Stock5,000$085,000D
Explanation of Responses:
1. The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on August 1, 2025.
2. This stock option (the "Option") to acquire 200,000 shares of Amkor Technology, Inc. common stock (the "Option Shares") was granted on June 10, 2019 (the "Option Grant Date") and vested over four years as follows: (i) with respect to 25% of the Option Shares, on the first anniversary of the Option Grant Date; and (ii) with respect to the remainder of the Option Shares, in equal quarterly installments thereafter, such that 100% of the Option vested on the fourth anniversary of the Option Grant Date.
Remarks:
/s/ Mark N. Rogers05/20/2026
** 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)

FAQ

What insider stock transactions did AMKR executive Mark N. Rogers report?

Mark N. Rogers reported exercising options for 5,000 Amkor shares and selling 5,000 common shares. The transactions occurred on May 18, 2026, combining a derivative option exercise with an open-market sale of the resulting shares.

How many AMKR shares did Mark N. Rogers sell and at what price?

He sold 5,000 shares of Amkor common stock at an average price of $71.63 per share. This was disclosed as an open-market or private transaction coded as an “S” sale on his Form 4 filing.

What stock option exercise did Mark N. Rogers report for AMKR?

He exercised employee stock options covering 5,000 Amkor common shares at an exercise price of $7.40 per share. The options are part of a larger 200,000-share grant that vested over four years starting June 10, 2019.

How many AMKR shares does Mark N. Rogers own after these transactions?

Following the reported sale and option exercise, Mark N. Rogers directly owns 38,904 shares of Amkor common stock. This post-transaction holding reflects his remaining direct equity stake after selling 5,000 shares.

Were Mark N. Rogers’ AMKR share sales made under a Rule 10b5-1 plan?

Yes. The filing states the sale was effected under a Rule 10b5-1 trading plan adopted on August 1, 2025. Such pre-arranged plans schedule trades in advance to promote orderly, rule-based insider transactions.

What is the vesting schedule of Mark N. Rogers’ AMKR option grant?

The 200,000-share option grant vested over four years from June 10, 2019. Twenty-five percent vested on the first anniversary, and the remaining shares vested in equal quarterly installments until full vesting on the fourth anniversary.