Insider sells 30,000 shares reported on Form 144

Form 144 filing reports insider dispositions totaling 30,000 shares.

Accepted by SEC EDGAR 05/08/2026 - 04:05 PM EDT Learn about SEC filing dates

Rhea-AI Filing Summary

Form 144 filing reports insider dispositions totaling 30,000 shares. The filing lists two recent sales by Guillaume Rutten: 10,000 shares on 02/17/2026 for $458,927 and 20,000 shares on 02/24/2026 for $976,070. The filing also lists securities classified as Performance Shares (6,667 and 25,000) and Restricted Stock (18,333) with grant dates in 2024.

Key Figures

Shares sold (02/17/2026): 10,000 shares Proceeds (02/17/2026): $458,927 Shares sold (02/24/2026): 20,000 shares +4 more

7 metrics

Shares sold (02/17/2026) 10,000 shares sale by Guillaume Rutten on 02/17/2026

Proceeds (02/17/2026) $458,927 proceeds reported for 10,000-share sale on 02/17/2026

Shares sold (02/24/2026) 20,000 shares sale by Guillaume Rutten on 02/24/2026

Proceeds (02/24/2026) $976,070 proceeds reported for 20,000-share sale on 02/24/2026

Performance Shares (grant 1) 6,667 shares Performance Shares dated 08/13/2024

Performance Shares (grant 2) 25,000 shares Performance Shares dated 08/13/2024

Restricted Stock 18,333 shares Restricted Stock dated 07/01/2024

Key Terms

Form 144, Performance Shares, Restricted Stock, Issuer

4 terms

Form 144 regulatory

"144: Securities Sold During The Past 3 Months"

Form 144 is a document that investors must file with the government when they plan to sell a large number of shares of a company's stock. It helps ensure transparency so everyone knows how many shares are being sold and when, which can impact the stock's price.

Performance Shares financial

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

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.

Restricted Stock financial

"Common | 07/01/2024 | Restricted Stock"

Shares granted to an individual that carry limits on transfer or sale until certain conditions are met, such as staying with the company for a set time or hitting performance targets. Think of them as a locked gift that gradually opens; for investors they matter because they affect how many shares may enter the market later, signal management incentives and potential dilution, and reveal confidence in future company performance.

Issuer legal

"Performance Shares | Issuer | | | 6667"

FAQ

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

What does AMKR's Form 144 report show about recent insider sales?

The Form 144 shows 30,000 shares sold by Guillaume Rutten in two transactions: 02/17/2026 (10,000 shares for $458,927) and 02/24/2026 (20,000 shares for $976,070). The filing lists the broker as Morgan Stanley Smith Barney LLC.

Which types of securities are listed for potential sale in the AMKR filing?

The filing lists Performance Shares and Restricted Stock: 6,667 and 25,000 performance-share units (grant date 08/13/2024) and 18,333 restricted shares (grant date 07/01/2024). Dates and counts are shown verbatim in the filing.

Who is the reported seller in the AMKR Form 144 and which broker handled the transactions?

The reported seller is Guillaume Rutten, with the broker identified as Morgan Stanley Smith Barney LLC located at 1 New York Plaza. The broker information and seller name appear explicitly in the filing text.

How many shares were sold on each date listed in the AMKR filing?

The filing itemizes two sales: 10,000 shares on 02/17/2026 for $458,927 and 20,000 shares on 02/24/2026 for $976,070. These amounts are shown in the filing's sales table.

Do the Form 144 entries show grant dates for the listed securities?

Yes. The filing shows grant or award dates for the listed securities: performance shares dated 08/13/2024 and restricted stock dated 07/01/2024, with associated share counts provided in the filing.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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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	50000	3713965.00	247872518	05/08/2026	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			6667	08/13/2024	Not Applicable
Common	08/13/2024	Performance Shares	Issuer			25000	08/13/2024	Not Applicable
Common	07/01/2024	Restricted Stock	Issuer			18333	07/01/2024	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	02/24/2026	20000	976070.00
GUILLAUME RUTTEN 2045 East Innovation Circle Tempe AZ 85284	Common	02/17/2026	10000	458927.00

144: Remarks and Signature

Remarks
Date of Notice	05/08/2026
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)