[144] AMKOR TECHNOLOGY, INC. SEC Filing

Rhea-AI Filing Summary

AMKOR TECHNOLOGY, INC. (AMKR) submitted a Form 144 reporting a proposed sale of 10,000 shares of common stock through Morgan Stanley Smith Barney LLC on 09/23/2025, with an aggregate market value of $300,000.00. The filing shows the 10,000 shares were originally acquired as restricted stock in three grants: 4,808 shares on 02/24/2023, 192 shares on 07/30/2023, and 5,000 shares on 04/30/2023. The total number of shares outstanding is listed as 247,143,055. The filer certifies no material nonpublic information and reports no sales of the issuer's securities by the filer in the past three months.

Positive

• Full transaction details provided including broker, share count, acquisition dates, and aggregate market value
• Securities were acquired as restricted stock with acquisition dates and amounts listed (4,808; 192; 5,000)
• Filer attestation that no material nonpublic information is known and disclosure of no sales in the past three months

Negative

• None.

Insights

Securities Compliance Analyst

TL;DR: Routine Rule 144 notice for sale of restricted shares consistent with public-disclosure requirements.

The filing documents a standard Rule 144 notice: 10,000 restricted shares aggregated from three grants are planned for sale via Morgan Stanley Smith Barney LLC with a stated market value of $300,000. The notice includes acquisition dates and confirms no related sales in the prior three months and a representation that the seller lacks undisclosed material information. This aligns with typical Section 144 procedural compliance and imposes no new operational or financial disclosures about AMKR itself.

Corporate Governance Expert

TL;DR: Disclosure appears complete for a Form 144; no governance red flags are evident from the notice alone.

The form identifies the broker, share count, acquisition method (restricted stock), acquisition dates, and aggregate market value. It also states the outstanding share count (247,143,055) and the filer’s attestation regarding material information. As a governance disclosure, this is procedural transparency about insider selling rather than a corporate action or policy change.

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK
Filer CCC
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer

SEC File Number

Address of Issuer

Phone

Name of Person for Whose Account the Securities are To Be Sold

See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.

Relationship to Issuer

Relationship to Issuer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	10000	300000.00	247143055	09/23/2025	NASDAQ

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	02/24/2023	Restricted Stock	ISSUER			4808	02/24/2023	Not Applicable
Common	07/30/2023	Restricted Stock	ISSUER			192	07/30/2023	Not Applicable
Common	04/30/2023	Restricted Stock	ISSUER			5000	04/30/2023	Not Applicable

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Nothing to Report

144: Remarks and Signature

Remarks

Date of Notice

Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1

ATTENTION:

The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.

Signature

ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)

FAQ

What transaction does AMKR's Form 144 report?

The Form 144 reports a proposed sale of 10,000 common shares via Morgan Stanley Smith Barney LLC on 09/23/2025, with an aggregate market value of $300,000.00.

How were the shares being sold acquired according to the filing?

The filing states the shares were acquired as restricted stock in three grants on 02/24/2023 (4,808), 04/30/2023 (5,000), and 07/30/2023 (192).

Does the Form 144 show any sales by the filer in the past three months?

No. The filing explicitly lists Nothing to Report for securities sold during the past three months by the filer.

What is the total number of AMKR shares outstanding listed in the filing?

The filing lists 247,143,055 shares outstanding.

Who is the broker handling the proposed sale?

The broker named in the filing is Morgan Stanley Smith Barney LLC Executive Financial Services located at 1 New York Plaza, 8th Floor, New York, NY 10004.