Amkor Technology Form 4: Kim Family Entity Boosts Holding by 441K Shares

Rhea-AI Filing Summary

Form 4 filing for Amkor Technology (AMKR) discloses that Sujoda Investments, LP—an entity affiliated with the Kim family group—received 441,589 shares of AMKR common stock on 1-Aug-2025. The shares were transferred at a stated price of $21.85 per share and are coded “P,” indicating a purchase/distribution under Section 16 rules.

Following the transaction, Sujoda’s direct holdings rose to 3,789,479 shares. The filing states that the distribution was made by James J. Kim to Sujoda pursuant to an intra-family agreement; Sujoda’s general partner is Sujoda Management, LLC. The filing also clarifies that Sujoda does not concede beneficial ownership of securities held by other members of the Kim family group.

No derivative securities were reported, and no 10b5-1 trading plan was indicated. The change increases Sujoda’s position by roughly 13% versus its immediately prior holding, modestly tightening insider ownership concentration but without altering control status.

Positive

• Increased insider ownership may signal continued confidence and long-term alignment by the founding Kim family.

Negative

• None.

Insights

Equity Analyst

TL;DR: Insider entity adds 441k AMKR shares, raising stake to 3.79 M; transaction appears intra-family and not open-market.

The filing shows additional accumulation by the Kim family group, historically the company’s largest shareholder. Although labeled code “P,” the narrative describes a family distribution rather than a market purchase, so no immediate cash inflow/outflow for the issuer. Still, the net effect is a higher concentrated holding under Sujoda Investments. Such transfers are generally neutral to fundamentals but signal continued long-term alignment by the founding family. With no sale disclosed, the market should not view this as insider selling pressure. There is minimal short-term valuation impact; however, sustained high insider ownership can influence governance dynamics.

Corporate Governance Specialist

TL;DR: Governance impact limited; intra-group shift keeps insider control stable.

The Kim family already exerts significant influence over Amkor. Moving 441,589 shares from James J. Kim to Sujoda reallocates, but does not dilute, that influence. The filing’s disclaimer that Sujoda is not admitting group beneficial ownership maintains existing Section 13D interpretations. No Board changes or voting agreements accompany the transfer, so governance risk profile remains unchanged. Investors should monitor cumulative insider holdings, now incrementally higher under Sujoda, for any future control transactions or potential liquidity events.

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^*

SUJODA Investments, LP

(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		10% Owner
	Officer (give title below)	X	Other (specify below)
			Member of 10% owner group (2)

3. Date of Earliest Transaction (Month/Day/Year)
08/01/2025

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	08/01/2025		P		441,589(1)	A	$21.85	3,789,479	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)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. On August 1, 2025, James J. Kim distributed 441,589 shares of the Common Stock of Amkor Technology, Inc. (the "Issuer") to the Reporting Person pursuant to the terms of a transaction between members of the Kim family group. The general partner of the Reporting Person is Sujoda Management, LLC.

Remarks:

(2) 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 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

	/s/ Brian D. Short, Attorney-in-Fact	08/05/2025
	** 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.

FAQ

How many AMKR shares did Sujoda Investments acquire on 1-Aug-2025?

Sujoda received 441,589 common shares of Amkor Technology.

What is Sujoda Investments' total AMKR holding after the transaction?

The entity now holds 3,789,479 shares directly.

Was the transaction an open-market purchase?

No. The filing notes the shares were distributed by James J. Kim as part of an intra-family arrangement.

Did Sujoda file under a Rule 10b5-1 plan?

The Form 4 does not indicate that the transaction was made pursuant to a 10b5-1 trading plan.

Does the transfer change insider control of Amkor Technology?

Control remains with the Kim family group; the transfer merely reallocates shares within the group.