Insider plans sale of 25,000 AMKR shares

Guillaume Rutten filed a notice to sell restricted shares of AMKR common stock.

Rhea-AI Filing Summary

Guillaume Rutten filed a notice to sell restricted shares of AMKR common stock. The filing lists 25,000 common shares to be sold through Morgan Stanley Smith Barney LLC Executive Financial Services, with an aggregate market value of $1,362,607.50 and 248,452,472 common shares outstanding, as of a proposed sale date of 08/06/2026 on NASDAQ. It also notes that the securities derive from performance shares dated 08/13/2024.

Over the past three months, the filing reports prior sales of AMKR common stock by Guillaume Rutten: 25,000 shares on 08/05/2026 for $1,383,765.00 and 50,000 shares on 05/08/2026 for $3,713,965.00.

Key Figures

Shares proposed to be sold: 25,000 shares Aggregate market value of proposed sale: $1,362,607.50 Common shares outstanding: 248,452,472 shares +3 more

6 metrics

Shares proposed to be sold 25,000 shares Common stock listed for sale through Morgan Stanley Smith Barney LLC Executive Financial Services

Aggregate market value of proposed sale $1,362,607.50 Value of 25,000 common shares proposed for sale

Common shares outstanding 248,452,472 shares Common shares outstanding referenced in connection with the proposed sale

Sale on 08/05/2026 25,000 shares; $1,383,765.00 Common stock sale reported in the past three months section

Sale on 05/08/2026 50,000 shares; $3,713,965.00 Common stock sale reported in the past three months section

Proposed sale date 08/06/2026 Date associated with the proposed sale of 25,000 common shares on NASDAQ

Key Terms

Securities To Be Sold, Securities Sold During The Past 3 Months, Performance Shares

3 terms

Securities To Be Sold regulatory

"144: Securities To Be Sold"

Securities Sold During The Past 3 Months regulatory

"144: Securities Sold During The Past 3 Months"

Performance Shares financial

"Common | 08/13/2024 | Performance Shares | Issuer"

Performance shares are a type of company stock given to executives or employees that only become theirs if the company meets specific goals, like hitting certain profits or growth targets. They motivate leaders to work toward the company’s success, because their additional shares depend on achieving these results.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What does the AMKR Form 144 filing by Guillaume Rutten disclose?

It discloses a planned sale of 25,000 AMKR common shares through Morgan Stanley Smith Barney, with an aggregate market value of $1,362,607.50 and details of prior share sales in recent months.

How many AMKR shares does Guillaume Rutten plan to sell under this Form 144?

The filing lists a proposed sale of 25,000 common shares. These shares are associated with performance shares dated 08/13/2024 and are to be sold through Morgan Stanley Smith Barney Executive Financial Services.

What is the reported market value of the AMKR shares in the new Form 144?

The 25,000 AMKR common shares have an aggregate market value of $1,362,607.50. The Form 144 also notes 248,452,472 common shares outstanding in connection with this proposed sale on NASDAQ.

What AMKR share sales by Guillaume Rutten occurred in the last three months?

The filing reports two prior sales: 25,000 shares on 08/05/2026 for $1,383,765.00 and 50,000 shares on 05/08/2026 for $3,713,965.00, both in AMKR common stock.

How many AMKR shares are outstanding in connection with this Form 144?

The Form 144 references 248,452,472 common shares outstanding. This figure provides context for the size of the proposed 25,000-share sale relative to AMKR’s total common shares.

Through which broker are the AMKR shares in this Form 144 to be sold?

The proposed sale of 25,000 AMKR common shares is listed through Morgan Stanley Smith Barney LLC Executive Financial Services, located at 1 New York Plaza, 8th Floor, New York, NY 10004.

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Available on EDGAR 08/06/2026 - 04:20 PM Accepted by SEC EDGAR 08/06/2026 - 04:20 PM Learn about SEC filing dates

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	0001596796
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	AMKOR TECHNOLOGY, INC.
SEC File Number	000-29472
Address of Issuer	2045 East Innovation Circle Tempe ARIZONA 85284
Phone	(480) 821-5000
Name of Person for Whose Account the Securities are To Be Sold	GUILLAUME RUTTEN
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	Director

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	25000	1362607.50	248452472	08/06/2026	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	08/13/2024	Performance Shares	Issuer			25000	08/13/2024	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

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
GUILLAUME RUTTEN 2045 East Innovation Circle Tempe AZ 85284	Common	08/05/2026	25000	1383765.00
GUILLAUME RUTTEN 2045 East Innovation Circle Tempe AZ 85284	Common	05/08/2026	50000	3713965.00

144: Remarks and Signature

Remarks
Date of Notice	08/06/2026
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	/s/ Guillaume Marie Jean Rutten
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)