Major Amkor Technology (AMKR) holder sells 10M shares via secondary

Rhea-AI Filing Summary

Amkor Technology’s major shareholder group reported a large secondary sale of shares. On February 12, 2026, 915 Investments, LP, an entity associated with 10% owner John T. Kim, sold 10,000,000 shares of Amkor common stock at $48.49 per share in an underwritten secondary offering.

After the sale, Form 4 shows 29,594,980 Amkor shares held indirectly through 915 Investments, LP, plus additional direct and indirect holdings through GRATs, family trusts, Sujochil, LP, Kim Capital Partners – KCP, LLC, and Sujoda Investments, LP. Kim treats these interests as having a pecuniary stake but disclaims full beneficial ownership beyond that interest.

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Equity ownership & governance analyst

Large shareholder-associated entity sold 10M Amkor shares via a secondary offering.

The filing shows 915 Investments, LP, associated with 10% owner John T. Kim, sold 10,000,000 Amkor common shares at $48.49 per share in an underwritten secondary offering on February 12, 2026. This is an indirect sale, not a direct personal trade by Kim.

Post-transaction, the Form 4 lists substantial remaining holdings, including 29,594,980 shares via 915 Investments, LP and additional blocks through GRATs, family trusts, Sujochil, LP, Kim Capital Partners – KCP, LLC, and Sujoda Investments, LP. The filing emphasizes that Kim disclaims beneficial ownership beyond his pecuniary interest, so the economic exposure is shared across several vehicles.

The net effect is a shift in how many shares are held by one investment partnership while a broader web of trust and partnership holdings remains significant. Future ownership updates would typically appear in later Section 16 filings if these entities change their positions further.

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
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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).

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^*

KIM JOHN T

(Last) (First) (Middle)

C/O SIANA CARR O'CONNOR & LYNAM

1500 EAST LANCASTER AVENUE

(Street)

PAOLI PA 19301-9713

(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	X	10% Owner
	Officer (give title below)	X	Other (specify below)
			Member of 10% owner group (6)

3. Date of Earliest Transaction (Month/Day/Year)
02/12/2026

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	02/12/2026		S(1)		10,000,000	D	$48.49	29,594,980(2)(3)(4)	I	By 915 Investments, LP
Common Stock								5,594,489	D
Common Stock								1,253,250(2)(3)(4)	I	By own GRATs
Common Stock								9,846,944(2)(3)(4)	I	By trusts (other than GRAT & Rev. Trust)
Common Stock								19,484,809(2)(3)(4)	I	By Sujochil, LP
Common Stock								16,710,668(2)(3)(4)	I	By Kim Capital Partners - KCP, LLC
Common Stock								3,789,479(2)(3)(4)(5)	I	By Sujoda Investments, LP

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

Explanation of Responses:

1. On February 12, 2026, 915 Investments, LP sold 10,000,000 shares of Common Stock of Amkor Technology, Inc. (the "Issuer") pursuant to an underwritten secondary offering. The Reporting Person is the general partner of 915 Investments, LP.

2. The Reporting Person is (i) a trustee of family trusts for the benefit of his immediate family members (other than Grantor Retained Annuity Trusts ("GRATS") which own 9,846,944 shares of the Issuer's Common Stock, (ii) a trustee of GRATs of which the Reporting Person was the settlor and is the sole annuitant which own 1,253,250 shares of the Issuer's Common Stock, (iii) a general partner of a limited partnership (Sujochil, LP) which owns 19,484,809 shares of the Issuer's Common Stock (iv) a manager of a limited liability company being treated as a corporation for purposes of Section 16 which owns 16,710,668 shares of the Issuer's Common Stock

3. (continued from Footnote 2) (v) a general partner of a limited partnership which owns 29,594,980 shares of the Issuer's Common Stock and (vi) as referenced in Footnote 4, a member of Sujoda Management, LLC, which indirectly owns 3,789,479 shares of the Issuer's Common Stock. Pursuant to the Form 4 instructions, the Reporting Person is being treated as having a pecuniary interest in all of such shares.

4. The Reporting Person disclaims beneficial ownership of these securities, except to the extent of the Reporting Person's pecuniary interest therein, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities, except to the extent of the Reporting Person's pecuniary interest therein, for purposes of Section 16 of the Securities Exchange Act of 1934, as amended ("Section 16"), or for any other purpose.

5. The sole general partner of Sujoda Investments, LP is Sujoda Management, LLC. The Reporting Person is one of three members of Sujoda Management, LLC. Sujoda Management, LLC is being treated as a limited partnership for purposes of Section 16, and, pursuant to the Form 4 instructions, the Reporting Person has elected to treat all of the shares of the Issuer's Common Stock owned by Sujoda Investments, LP as beneficially owned by the Reporting Person.

Remarks:

(6) The Reporting Person states that the filing of this Form 4 shall not be deemed an admission that the Reporting Person is the beneficial owner of the reported securities owned by the other members of the group, for the purpose of Section 16, or for any other purpose.

	/s/ Brian D. Short, Attorney-in-Fact for John T. Kim	02/17/2026
	** 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).
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FAQ

What insider transaction did Amkor Technology (AMKR) report on February 12, 2026?

Amkor Technology reported that 915 Investments, LP, an entity associated with 10% owner John T. Kim, sold 10,000,000 shares of common stock at $48.49 per share in an underwritten secondary offering, according to the Form 4 filed under Section 16.

Who actually sold the 10,000,000 Amkor (AMKR) shares disclosed in this Form 4?

The seller was 915 Investments, LP, an investment partnership. The Form 4 states that John T. Kim is the general partner of 915 Investments, LP, so the transaction is reported as his indirect interest rather than a direct personal sale of his individually held shares.

At what price were the 10,000,000 Amkor Technology (AMKR) shares sold?

The 10,000,000 Amkor common shares were sold at $48.49 per share. The filing describes the transaction as part of an underwritten secondary offering, indicating the shares were placed with investors through an underwriting syndicate rather than via small open-market trades.

How many Amkor (AMKR) shares does 915 Investments, LP hold after the reported sale?

After the sale, the Form 4 shows 915 Investments, LP holding 29,594,980 shares of Amkor common stock indirectly for the reporting person. This figure reflects the amount of securities beneficially owned following the reported transaction by that specific investment partnership entity.

What other Amkor Technology (AMKR) share holdings are associated with John T. Kim?

The Form 4 lists additional holdings including 5,594,489 shares directly, and indirect positions through GRATs, other family trusts, Sujochil, LP, Kim Capital Partners – KCP, LLC, and Sujoda Investments, LP. Kim reports a pecuniary interest in these but disclaims full beneficial ownership beyond that interest.

Does John T. Kim claim full beneficial ownership of all Amkor (AMKR) shares reported?

No. The filing states that Kim disclaims beneficial ownership of the securities except to the extent of his pecuniary interest. This means he reports economic exposure through various trusts and partnerships but does not concede full beneficial ownership for Section 16 or any other legal purpose.