Amkor Insider Update: Sujoda Gets 441k Shares in Family Transfer

Rhea-AI Filing Summary

Form 4 highlights: On 08/01/2025 Sujoda Investments, LP—controlled by Sujoda Management, LLC, a member of the Kim 10%-owner group—received 441,589 AMKR common shares at an implied $21.85 per share (≈ $9.7 m). The transfer was coded “P,” but the footnote clarifies it was an in-family distribution from James J. Kim rather than an open-market buy. After the transaction, Sujoda Investments’ indirect stake rose to 3,789,479 shares.

The reporting entity elects to treat all Sujoda Investments shares as beneficially owned, yet expressly disclaims beneficial ownership beyond its pecuniary interest. No derivative positions were reported.

Takeaway for investors: The filing increases transparency around the Kim family’s internal reallocation of a sizable position (~1.7 % of AMKR’s 264 m shares outstanding). While it signals continued concentrated insider ownership, the non-cash nature of the transfer limits immediate market impact.

Positive

• 441,589-share insider acquisition increases Sujoda Investments’ indirect stake to 3.79 m shares, reinforcing high insider ownership alignment.

Negative

• None.

Insights

Financial Analyst

TL;DR: Internal share transfer boosts Sujoda’s stake; neutral for AMKR fundamentals.

The 441.6 k-share distribution, though valued near $10 m, is a zero-sum shift inside the Kim family group. No cash leaves or enters Amkor, and the transaction does not alter share count or company liquidity. Insider accumulation can be viewed positively for alignment, but here it reflects estate/partnership structuring rather than a conviction buy. Given Amkor’s 3-month ADV of ~800 k shares, the stake size is material but the nature of the transfer is unlikely to influence trading dynamics or valuation.

Corporate Governance Specialist

TL;DR: Filing maintains Rule 16 compliance; no new control implications.

Sujoda Management remains part of the disclosed 10 % owner group; the updated indirect holdings keep collective ownership levels largely unchanged. The disclaimer of beneficial ownership beyond pecuniary interest is standard and prevents unintended control attributions. Overall, the event is administrative—important for transparency but not impactful to governance risk or voting power dynamics.

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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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 Management, LLC

(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 (4)

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(2)(3)	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 August 1, 2025, James J. Kim distributed 441,589 shares of the Common Stock of Amkor Technology, Inc. (the "Issuer") to Sujoda Investments, LP pursuant to the terms of a transaction between members of the Kim family group.

2. The Reporting Person is the sole general partner of Sujoda Investments, LP. 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.

3. 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.

Remarks:

(4) 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	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 08/01/2025?

441,589 common shares were transferred to Sujoda Investments, LP.

What was the price per share in the reported transaction?

The Form 4 lists an implied price of $21.85 per share.

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

Indirect ownership increased to 3,789,479 shares.

Does the filing indicate an open-market purchase?

No. Footnotes clarify the shares were distributed within the Kim family group, not bought on the open market.

Is Sujoda Management considered a 10% owner of Amkor Technology?

Yes, the entity remains part of the 10% owner group as defined under Section 16.