Kim family group trims Amkor (AMKR) stake with 10M-share secondary sale

Rhea-AI Filing Summary

Amkor Technology’s major shareholder group, led by the Kim family, has reduced its stake through a large secondary sale. 915 Investments, LP sold 10,000,000 Amkor common shares at $48.49 per share in an underwritten offering on February 12, 2026, with an additional 1,500,000-share option granted to the underwriter that has not been exercised.

After this transaction, the Kim family group reports beneficial ownership of 122,666,110 shares, or 49.49% of Amkor’s common stock, based on 247,309,063 shares outstanding as of February 10, 2026, including 570,000 shares subject to options exercisable within sixty days. Various family members, trusts, partnerships and LLCs hold these shares, and a long-standing voting agreement on 49,594,980 “Convert Shares” continues to require neutral voting above a specified ownership threshold, while 915 Investments is subject to a 180-day lock-up on additional sales.

Insights

Equity ownership and governance analyst

Large family holder sells 10M Amkor shares but retains near-50% control.

The Kim family group, through 915 Investments, LP, completed an underwritten secondary sale of 10,000,000 Amkor shares at $48.49 per share on February 12, 2026. This is a secondary transaction, so proceeds go to the selling holder rather than Amkor.

Following the sale, the group still reports beneficial ownership of 122,666,110 shares, or 49.49% of outstanding common stock, based on 247,309,063 shares as of February 10, 2026, including 570,000 option shares. That leaves the family with effective near-majority influence despite trimming its position.

The filing also highlights a voting agreement covering 49,594,980 "Convert Shares" that are generally voted in a neutral manner above a 41.6% threshold, and a 180-day lock-up restricting further 915 Investments sales after the offering date. Future company disclosures may detail any further changes in ownership or voting arrangements.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13D

Under the Securities Exchange Act of 1934

(Amendment No. 20)

Amkor Technology, Inc.

(Name of Issuer)

Common Stock, par value $0.001 per share

(Title of Class of Securities)

031652100

(CUSIP Number)

James J. Kim
1500 E. Lancaster Avenue,
Paoli, PA, 19301-9713
(480) 575-7253

Brian D. Short, Esq.
1735 Market Street, 51st Floor
Philadelphia, PA, 19103
(215) 864-8230

(Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications)

02/12/2026

(Date of Event Which Requires Filing of This Statement)

If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of §§ 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box.

The information required on the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

SCHEDULE 13D

CUSIP No. 031652100

1

Name of reporting person

James J. Kim

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

UNITED STATES

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 511,645.00
8	Shared Voting Power 0.00
9	Sole Dispositive Power 511,645.00
10	Shared Dispositive Power 0.00

11

Aggregate amount beneficially owned by each reporting person

511,645.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

0.2 %

14

Type of Reporting Person (See Instructions)

IN

SCHEDULE 13D

CUSIP No. 031652100

1

Name of reporting person

James J. Kim, as Trustee

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

UNITED STATES

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 0.00
8	Shared Voting Power 10,511,032.00
9	Sole Dispositive Power 0.00
10	Shared Dispositive Power 10,511,032.00

11

Aggregate amount beneficially owned by each reporting person

10,511,032.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

4.3 %

14

Type of Reporting Person (See Instructions)

IN

SCHEDULE 13D

CUSIP No. 031652100

1

Name of reporting person

Agnes C. Kim

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

UNITED STATES

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 0.00
8	Shared Voting Power 0.00
9	Sole Dispositive Power 0.00
10	Shared Dispositive Power 0.00

11

Aggregate amount beneficially owned by each reporting person

0.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

0.0 %

14

Type of Reporting Person (See Instructions)

IN

SCHEDULE 13D

CUSIP No. 031652100

1

Name of reporting person

John T. Kim

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

UNITED STATES

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 38,978,948.00
8	Shared Voting Power 36,360,155.00
9	Sole Dispositive Power 35,189,469.00
10	Shared Dispositive Power 40,149,634.00

11

Aggregate amount beneficially owned by each reporting person

75,339,103.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

30.5 %

14

Type of Reporting Person (See Instructions)

IN

SCHEDULE 13D

CUSIP No. 031652100

1

Name of reporting person

John T. Kim, as Trustee

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

UNITED STATES

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 9,345,483.00
8	Shared Voting Power 8,264,500.00
9	Sole Dispositive Power 8,847,251.00
10	Shared Dispositive Power 18,863,764.00

11

Aggregate amount beneficially owned by each reporting person

27,711,015.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

11.2 %

14

Type of Reporting Person (See Instructions)

IN

SCHEDULE 13D

CUSIP No. 031652100

1

Name of reporting person

David D. Kim

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

UNITED STATES

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 8,746.00
8	Shared Voting Power 0.00
9	Sole Dispositive Power 8,746.00
10	Shared Dispositive Power 3,789,479.00

11

Aggregate amount beneficially owned by each reporting person

3,798,225.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

1.5 %

14

Type of Reporting Person (See Instructions)

IN

SCHEDULE 13D

CUSIP No. 031652100

1

Name of reporting person

David D. Kim, as Trustee

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

UNITED STATES

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 1,363,400.00
8	Shared Voting Power 1,335,113.00
9	Sole Dispositive Power 1,363,400.00
10	Shared Dispositive Power 1,335,113.00

11

Aggregate amount beneficially owned by each reporting person

2,698,513.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

1.1 %

14

Type of Reporting Person (See Instructions)

IN

SCHEDULE 13D

CUSIP No. 031652100

1

Name of reporting person

Susan Y. Kim

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

UNITED STATES

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 9,999,973.00
8	Shared Voting Power 36,195,477.00
9	Sole Dispositive Power 6,210,494.00
10	Shared Dispositive Power 39,984,956.00

11

Aggregate amount beneficially owned by each reporting person

46,195,450.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

18.7 %

14

Type of Reporting Person (See Instructions)

IN

SCHEDULE 13D

CUSIP No. 031652100

1

Name of reporting person

Susan Y. Kim, as Trustee

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

UNITED STATES

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 9,351,594.00
8	Shared Voting Power 7,539,500.00
9	Sole Dispositive Power 9,036,594.00
10	Shared Dispositive Power 8,352,732.00

11

Aggregate amount beneficially owned by each reporting person

17,389,326.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

7.0 %

14

Type of Reporting Person (See Instructions)

IN

SCHEDULE 13D

CUSIP No. 031652100

1

Name of reporting person

Liam E. Blaney

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

UNITED STATES

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 0.00
8	Shared Voting Power 164,678.00
9	Sole Dispositive Power 0.00
10	Shared Dispositive Power 164,678.00

11

Aggregate amount beneficially owned by each reporting person

164,678.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

0.1 %

14

Type of Reporting Person (See Instructions)

IN

SCHEDULE 13D

CUSIP No. 031652100

1

Name of reporting person

John T. Kim Trust of December 31, 1987

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

PENNSYLVANIA

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 7,594,001.00
8	Shared Voting Power 0.00
9	Sole Dispositive Power 7,594,001.00
10	Shared Dispositive Power 0.00

11

Aggregate amount beneficially owned by each reporting person

7,594,001.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

3.1 %

14

Type of Reporting Person (See Instructions)

OO

SCHEDULE 13D

CUSIP No. 031652100

1

Name of reporting person

Irrevocable Deed of Trust of James J. Kim for Jacqueline Mary Panichello dated 10/3/94

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

PENNSYLVANIA

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 0.00
8	Shared Voting Power 961,113.00
9	Sole Dispositive Power 0.00
10	Shared Dispositive Power 961,113.00

11

Aggregate amount beneficially owned by each reporting person

961,113.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

0.4 %

14

Type of Reporting Person (See Instructions)

OO

SCHEDULE 13D

CUSIP No. 031652100

1

Name of reporting person

Irrevocable Deed of Trust of James J. Kim for Alexandra Kim Panichello dated 12/24/92

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

PENNSYLVANIA

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 0.00
8	Shared Voting Power 961,113.00
9	Sole Dispositive Power 0.00
10	Shared Dispositive Power 961,113.00

11

Aggregate amount beneficially owned by each reporting person

961,113.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

0.4 %

14

Type of Reporting Person (See Instructions)

OO

SCHEDULE 13D

CUSIP No. 031652100

1

Name of reporting person

Irrevocable Deed of Trust of James J. Kim for Dylan James Panichello dated 10/15/01

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

PENNSYLVANIA

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 0.00
8	Shared Voting Power 961,113.00
9	Sole Dispositive Power 0.00
10	Shared Dispositive Power 961,113.00

11

Aggregate amount beneficially owned by each reporting person

961,113.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

0.4 %

14

Type of Reporting Person (See Instructions)

OO

SCHEDULE 13D

CUSIP No. 031652100

1

Name of reporting person

Irrevocable Deed of Trust of James J. Kim for Allyson Lee Kim dated 10/15/01

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

PENNSYLVANIA

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 0.00
8	Shared Voting Power 961,113.00
9	Sole Dispositive Power 0.00
10	Shared Dispositive Power 961,113.00

11

Aggregate amount beneficially owned by each reporting person

961,113.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

0.4 %

14

Type of Reporting Person (See Instructions)

OO

SCHEDULE 13D

CUSIP No. 031652100

1

Name of reporting person

Irrevocable Deed of Trust of James J. Kim FBO Jason Lee Kim dated 11/17/03

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

PENNSYLVANIA

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 0.00
8	Shared Voting Power 961,113.00
9	Sole Dispositive Power 0.00
10	Shared Dispositive Power 961,113.00

11

Aggregate amount beneficially owned by each reporting person

961,113.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

0.4 %

14

Type of Reporting Person (See Instructions)

OO

SCHEDULE 13D

CUSIP No. 031652100

1

Name of reporting person

Irrevocable Deed of Trust of James J. Kim f/b/o Children of David D. Kim dated 11/11/05

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

PENNSYLVANIA

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 0.00
8	Shared Voting Power 1,335,113.00
9	Sole Dispositive Power 0.00
10	Shared Dispositive Power 1,335,113.00

11

Aggregate amount beneficially owned by each reporting person

1,335,113.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

0.5 %

14

Type of Reporting Person (See Instructions)

OO

SCHEDULE 13D

CUSIP No. 031652100

1

Name of reporting person

James J. Kim 2008 Trust FBO Alexandra Kim Panichello and Descendants dated 2/5/08

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

PENNSYLVANIA

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 0.00
8	Shared Voting Power 546,787.00
9	Sole Dispositive Power 0.00
10	Shared Dispositive Power 546,787.00

11

Aggregate amount beneficially owned by each reporting person

546,787.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

0.2 %

14

Type of Reporting Person (See Instructions)

OO

SCHEDULE 13D

CUSIP No. 031652100

1

Name of reporting person

James J. Kim 2008 Trust FBO Jacqueline Mary Panichello and Descendants dated 2/5/08

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

PENNSYLVANIA

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 0.00
8	Shared Voting Power 546,787.00
9	Sole Dispositive Power 0.00
10	Shared Dispositive Power 546,787.00

11

Aggregate amount beneficially owned by each reporting person

546,787.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

0.2 %

14

Type of Reporting Person (See Instructions)

OO

SCHEDULE 13D

CUSIP No. 031652100

1

Name of reporting person

James J. Kim 2008 Trust FBO Dylan James Panichello and Descendants dated 2/5/08

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

PENNSYLVANIA

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 0.00
8	Shared Voting Power 546,787.00
9	Sole Dispositive Power 0.00
10	Shared Dispositive Power 546,787.00

11

Aggregate amount beneficially owned by each reporting person

546,787.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

0.2 %

14

Type of Reporting Person (See Instructions)

OO

SCHEDULE 13D

CUSIP No. 031652100

1

Name of reporting person

James J. Kim 2008 Trust FBO Descendants of John T. Kim dated 2/5/08

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

PENNSYLVANIA

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 0.00
8	Shared Voting Power 1,093,574.00
9	Sole Dispositive Power 0.00
10	Shared Dispositive Power 1,093,574.00

11

Aggregate amount beneficially owned by each reporting person

1,093,574.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

0.4 %

14

Type of Reporting Person (See Instructions)

OO

SCHEDULE 13D

CUSIP No. 031652100

1

Name of reporting person

James J. Kim 2008 Trust FBO Descendants of David D. Kim dated 2/5/08

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

PENNSYLVANIA

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 1,363,400.00
8	Shared Voting Power 0.00
9	Sole Dispositive Power 1,363,400.00
10	Shared Dispositive Power 0.00

11

Aggregate amount beneficially owned by each reporting person

1,363,400.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

0.6 %

14

Type of Reporting Person (See Instructions)

OO

SCHEDULE 13D

CUSIP No. 031652100

1

Name of reporting person

The James and Agnes Kim Foundation, Inc.

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

PENNSYLVANIA

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 1,150,000.00
8	Shared Voting Power 0.00
9	Sole Dispositive Power 1,150,000.00
10	Shared Dispositive Power 0.00

11

Aggregate amount beneficially owned by each reporting person

1,150,000.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

0.5 %

14

Type of Reporting Person (See Instructions)

OO

Comment for Type of Reporting Person:

Non-profit corporation

SCHEDULE 13D

CUSIP No. 031652100

1

Name of reporting person

915 Investments, LP

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

PENNSYLVANIA

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 29,594,980.00
8	Shared Voting Power 0.00
9	Sole Dispositive Power 29,594,980.00
10	Shared Dispositive Power 0.00

11

Aggregate amount beneficially owned by each reporting person

29,594,980.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

12.0 %

14

Type of Reporting Person (See Instructions)

PN

SCHEDULE 13D

CUSIP No. 031652100

1

Name of reporting person

John T. Kim 2007 Children's Trust U/A dated 12/28/07

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

PENNSYLVANIA

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 315,000.00
8	Shared Voting Power 0.00
9	Sole Dispositive Power 0.00
10	Shared Dispositive Power 315,000.00

11

Aggregate amount beneficially owned by each reporting person

315,000.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

0.1 %

14

Type of Reporting Person (See Instructions)

OO

SCHEDULE 13D

CUSIP No. 031652100

1

Name of reporting person

Sujoda Investments, LP

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

PENNSYLVANIA

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 3,789,479.00
8	Shared Voting Power 0.00
9	Sole Dispositive Power 0.00
10	Shared Dispositive Power 3,789,479.00

11

Aggregate amount beneficially owned by each reporting person

3,789,479.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

1.5 %

14

Type of Reporting Person (See Instructions)

PN

SCHEDULE 13D

CUSIP No. 031652100

1

Name of reporting person

John T. Kim 2012 Generation-Skipping Trust U/A Dated 12/11/12

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

PENNSYLVANIA

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 1,957,350.00
8	Shared Voting Power 0.00
9	Sole Dispositive Power 0.00
10	Shared Dispositive Power 1,957,350.00

11

Aggregate amount beneficially owned by each reporting person

1,957,350.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

0.8 %

14

Type of Reporting Person (See Instructions)

OO

SCHEDULE 13D

CUSIP No. 031652100

1

Name of reporting person

Family Trust under the John T. Kim 2018 Irrevocable Trust Agreement dated 2/6/18

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

PENNSYLVANIA

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 498,232.00
8	Shared Voting Power 0.00
9	Sole Dispositive Power 0.00
10	Shared Dispositive Power 498,232.00

11

Aggregate amount beneficially owned by each reporting person

498,232.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

0.2 %

14

Type of Reporting Person (See Instructions)

OO

SCHEDULE 13D

CUSIP No. 031652100

1

Name of reporting person

Family Trust under the John T. Kim 2012 Irrevocable Trust Agreement dated 12/11/12

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

PENNSYLVANIA

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 7,828,682.00
8	Shared Voting Power 0.00
9	Sole Dispositive Power 0.00
10	Shared Dispositive Power 7,828,682.00

11

Aggregate amount beneficially owned by each reporting person

7,828,682.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

3.2 %

14

Type of Reporting Person (See Instructions)

OO

SCHEDULE 13D

CUSIP No. 031652100

1

Name of reporting person

Sujochil, LP

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

PENNSYLVANIA

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 0.00
8	Shared Voting Power 19,484,809.00
9	Sole Dispositive Power 0.00
10	Shared Dispositive Power 19,484,809.00

11

Aggregate amount beneficially owned by each reporting person

19,484,809.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

7.9 %

14

Type of Reporting Person (See Instructions)

PN

SCHEDULE 13D

CUSIP No. 031652100

1

Name of reporting person

Sujoda Management, LLC

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

PENNSYLVANIA

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 3,789,479.00
8	Shared Voting Power 0.00
9	Sole Dispositive Power 0.00
10	Shared Dispositive Power 3,789,479.00

11

Aggregate amount beneficially owned by each reporting person

3,789,479.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

1.5 %

14

Type of Reporting Person (See Instructions)

OO

SCHEDULE 13D

CUSIP No. 031652100

1

Name of reporting person

Susins, LLC

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

PENNSYLVANIA

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 0.00
8	Shared Voting Power 164,678.00
9	Sole Dispositive Power 0.00
10	Shared Dispositive Power 164,678.00

11

Aggregate amount beneficially owned by each reporting person

164,678.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

0.1 %

14

Type of Reporting Person (See Instructions)

OO

SCHEDULE 13D

CUSIP No. 031652100

1

Name of reporting person

2023 Grantor Retained Annuity Trust of James J. Kim dtd. 4/26/2023

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

PENNSYLVANIA

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 0.00
8	Shared Voting Power 0.00
9	Sole Dispositive Power 0.00
10	Shared Dispositive Power 0.00

11

Aggregate amount beneficially owned by each reporting person

0.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

0.0 %

14

Type of Reporting Person (See Instructions)

OO

SCHEDULE 13D

CUSIP No. 031652100

1

Name of reporting person

2023 Grantor Retained Annuity Trust of Agnes C. Kim dtd. 4/26/2023

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

PENNSYLVANIA

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 0.00
8	Shared Voting Power 0.00
9	Sole Dispositive Power 0.00
10	Shared Dispositive Power 0.00

11

Aggregate amount beneficially owned by each reporting person

0.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

0.0 %

14

Type of Reporting Person (See Instructions)

OO

SCHEDULE 13D

CUSIP No. 031652100

1

Name of reporting person

2023 Grantor Retained Annuity Trust of Susan Y. Kim Dated 9/15/2023

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

PENNSYLVANIA

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 0.00
8	Shared Voting Power 0.00
9	Sole Dispositive Power 0.00
10	Shared Dispositive Power 0.00

11

Aggregate amount beneficially owned by each reporting person

0.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

0.0 %

14

Type of Reporting Person (See Instructions)

OO

SCHEDULE 13D

CUSIP No. 031652100

1

Name of reporting person

Kim Capital Partners - KCP, LLC

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

PENNSYLVANIA

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 0.00
8	Shared Voting Power 16,710,668.00
9	Sole Dispositive Power 0.00
10	Shared Dispositive Power 16,710,668.00

11

Aggregate amount beneficially owned by each reporting person

16,710,668.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

6.8 %

14

Type of Reporting Person (See Instructions)

OO

SCHEDULE 13D

CUSIP No. 031652100

1

Name of reporting person

2024 Grantor Retained Annuity Trust of Susan Y. Kim dtd. 8/5/2024

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

PENNSYLVANIA

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 1,124,000.00
8	Shared Voting Power 0.00
9	Sole Dispositive Power 1,124,000.00
10	Shared Dispositive Power 0.00

11

Aggregate amount beneficially owned by each reporting person

1,124,000.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

0.5 %

14

Type of Reporting Person (See Instructions)

OO

SCHEDULE 13D

CUSIP No. 031652100

1

Name of reporting person

2024 Grantor Retained Annuity Trust of James J. Kim dtd. 8/5/2024

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

PENNSYLVANIA

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 1,235,000.00
8	Shared Voting Power 0.00
9	Sole Dispositive Power 1,235,000.00
10	Shared Dispositive Power 0.00

11

Aggregate amount beneficially owned by each reporting person

1,235,000.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

0.5 %

14

Type of Reporting Person (See Instructions)

OO

SCHEDULE 13D

CUSIP No. 031652100

1

Name of reporting person

2024 Grantor Retained Annuity Trust of Agnes C. Kim dtd. 8/5/2024

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

PENNSYLVANIA

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 895,000.00
8	Shared Voting Power 0.00
9	Sole Dispositive Power 895,000.00
10	Shared Dispositive Power 0.00

11

Aggregate amount beneficially owned by each reporting person

895,000.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

0.4 %

14

Type of Reporting Person (See Instructions)

OO

SCHEDULE 13D

CUSIP No. 031652100

1

Name of reporting person

John T. Kim 2024 GRAT #1 dtd. 08/09/2024

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

PENNSYLVANIA

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 1,194,000.00
8	Shared Voting Power 0.00
9	Sole Dispositive Power 1,194,000.00
10	Shared Dispositive Power 0.00

11

Aggregate amount beneficially owned by each reporting person

1,194,000.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

0.5 %

14

Type of Reporting Person (See Instructions)

OO

SCHEDULE 13D

CUSIP No. 031652100

1

Name of reporting person

John T. Kim 2024 GRAT #2 dtd. 08/09/2024

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

PENNSYLVANIA

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 59,250.00
8	Shared Voting Power 0.00
9	Sole Dispositive Power 59,250.00
10	Shared Dispositive Power 0.00

11

Aggregate amount beneficially owned by each reporting person

59,250.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

0.0 %

14

Type of Reporting Person (See Instructions)

OO

SCHEDULE 13D

CUSIP No. 031652100

1

Name of reporting person

Susan Y. Kim 2023 Family Distribution Trust

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

PENNSYLVANIA

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 0.00
8	Shared Voting Power 725,000.00
9	Sole Dispositive Power 0.00
10	Shared Dispositive Power 725,000.00

11

Aggregate amount beneficially owned by each reporting person

725,000.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

0.3 %

14

Type of Reporting Person (See Instructions)

OO

SCHEDULE 13D

CUSIP No. 031652100

1

Name of reporting person

2025 Grantor Retained Annuity Trust No. 1 of Agnes C. Kim

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

PENNSYLVANIA

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 2,538,000.00
8	Shared Voting Power 0.00
9	Sole Dispositive Power 2,538,000.00
10	Shared Dispositive Power 0.00

11

Aggregate amount beneficially owned by each reporting person

2,538,000.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

1.0 %

14

Type of Reporting Person (See Instructions)

OO

SCHEDULE 13D

CUSIP No. 031652100

1

Name of reporting person

2025 Grantor Retained Annuity Trust No.1 of James J. Kim

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

PENNSYLVANIA

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 3,244,594.00
8	Shared Voting Power 0.00
9	Sole Dispositive Power 3,244,594.00
10	Shared Dispositive Power 0.00

11

Aggregate amount beneficially owned by each reporting person

3,244,594.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

1.3 %

14

Type of Reporting Person (See Instructions)

OO

SCHEDULE 13D

Item 1.	Security and Issuer
(a)	Title of Class of Securities: Common Stock, par value $0.001 per share
(b)	Name of Issuer: Amkor Technology, Inc.
(c)	Address of Issuer's Principal Executive Offices: 2045 East Innovation Circle, Tempe, ARIZONA , 85284.
Item 1 Comment: The Schedule 13D initially filed with the U.S. Securities and Exchange Commission ("SEC") on November 28, 2005, as previously amended (the "Initial 13D") is hereby further amended to furnish the additional information set forth in this Amendment No. 20 to the Initial 13D. All capitalized terms contained herein but not otherwise defined shall have the meanings ascribed to such terms in the Initial 13D. Pursuant to the underwritten secondary offering described below, effective as of February 12, 2026, 915 Investments, LP (the "915 Partnership"), a Pennsylvania limited partnership, disposed of 10,000,000 shares of Common Stock of the Issuer and the number of shares reported as held by the Reporting Persons in this Amendment gives effect to such transaction.
Item 2.	Identity and Background
(a)	This Amendment is being filed by the Group and separately by each of the following persons comprising the Group (each a "Reporting Person"): 1. James J. Kim 2. James J. Kim, as Trustee 3. Agnes C. Kim 4. John T. Kim 5. John T. Kim, as Trustee 6. David D. Kim 7. David D. Kim, as Trustee 8. Susan Y. Kim 9. Susan Y. Kim, as Trustee 10. Liam E. Blaney 11. John T. Kim Trust of December 31, 1987 12. Irrevocable Deed of Trust of James J. Kim for Jacqueline Mary Panichello dated 10/3/94 13. Irrevocable Deed of Trust of James J. Kim for Alexandra Kim Panichello dated 12/24/92 14. Irrevocable Deed of Trust of James J. Kim for Dylan James Panichello dated 10/15/01 15. Irrevocable Deed of Trust of James J. Kim for Allyson Lee Kim dated 10/15/01 16. Irrevocable Deed of Trust of James J. Kim FBO Jason Lee Kim dated 11/17/03 17. Irrevocable Deed of Trust of James J. Kim f/b/o Children of David D. Kim dated 11/11/05 18. James J. Kim 2008 Trust FBO Alexandra Kim Panichello and Descendants dated 2/5/08 19. James J. Kim 2008 Trust FBO Jacqueline Mary Panichello and Descendants dated 2/5/08 20. James J. Kim 2008 Trust FBO Dylan James Panichello and Descendants dated 2/5/08 21. James J. Kim 2008 Trust FBO Descendants of John T. Kim dated 2/5/08 22. James J. Kim 2008 Trust FBO Descendants of David D. Kim dated 2/5/08 23. The James and Agnes Kim Foundation, Inc. 24. 915 Investments, LP, for which John T. Kim is the sole general partner 25. John T. Kim 2007 Children's Trust UA dated 12/28/07 26. Sujoda Investments, LP, for which Sujoda Management, LLC is the sole general partner 27. John T. Kim 2012 Generation-Skipping Trust U/A Dated 12/11/12 28. Family Trust under the John T. Kim 2018 Irrevocable Trust Agreement dated 2/6/18 29. Family Trust under the John T. Kim 2012 Irrevocable Trust Agreement dated 12/11/12 30. Sujochil, LP, for which John T. Kim and Susan Y. Kim are the general partners 31. Sujoda Management, LLC, for which Susan Y. Kim, John T. Kim and David D. Kim are the members 32. Susins, LLC, for which John T. Kim and Liam E. Blaney are the members 33. 2023 Grantor Retained Annuity Trust of James J. Kim dtd. 4/26/2023 34. 2023 Grantor Retained Annuity Trust of Agnes C. Kim dtd. 4/26/2023 35. 2023 Grantor Retained Annuity Trust of Susan Y. Kim Dated 9/15/2023 36. Kim Capital Partners - KCP, LLC, for which Susan Y. Kim and John T. Kim are the managers 37. 2024 Grantor Retained Annuity Trust of Susan Y. Kim dtd. 8/5/2024 38. 2024 Grantor Retained Annuity Trust of James J. Kim 8/5/2024 39. 2024 Grantor Retained Annuity Trust of Agnes C. Kim 8/5/2024 40. John T. Kim 2024 GRAT #1 dtd. 08/09/2024 41. John T. Kim 2024 GRAT #2 dtd. 08/09/2024 42. Susan Y. Kim 2023 Family Distribution Trust 43. 2025 Grantor Retained Annuity Trust No. 1 of Agnes C. Kim 44. 2025 Grantor Retained Annuity Trust No.1 of James J. Kim
(b)	The principal business address for the natural persons listed above, all of whom, other than Liam E. Blaney, are members of the Kim family (the "Kim Family"), Liam E. Blaney, 915 Investments, LP ("915 Partnership"), Sujoda Investments, LP ("SI, LP"), Sujochil, LP ("Sujochil"), Sujoda Management, LLC, a Pennsylvania limited liability company, Susins, LLC, a Pennsylvania limited liability company, Kim Capital Partners - KCP, LLC, a Pennsylvania limited liability company, for the trusts for the members of the Kim Family listed above and their descendants (as such trusts are amended, modified or supplemented from time to time, the "Kim Trusts") and for The James and Agnes Kim Foundation, Inc. (the "Foundation") is 1500 E. Lancaster Avenue, Paoli, PA 19301-9713.
(c)	The present principal occupation of each natural person listed above is as follows: (i) James J. Kim - Chairman Emeritus of the Issuer; (ii) Agnes C. Kim - Homemaker; (iii) John T. Kim - Private Investor; (iv) David D. Kim - Private Investor; (v) Susan Y. Kim - Executive Chairman of the Board of the Issuer and Philanthropist; (vi) Liam E. Blaney - Kim Family Manager. The principal business of the Kim Trusts is purchasing, holding, and selling securities and other assets for investment purposes. The principal business of the Foundation is to receive contributions from donors, make investments and make grants to charitable organizations. The principal business of the 915 Partnership, SI, LP, Sujochil, Susins, LLC and Kim Capital Partners - KCP, LLC is to serve as a fund through which the assets of its partners will be utilized to invest in, hold and trade in securities and other investments. The principal business of Sujoda Management, LLC is to serve as the general partner of SI, LP.
(d)	N/A
(e)	N/A
(f)	For each Reporting Person, the response to Row 6 on the cover page, indicating the citizenship or place of organization of such person, is incorporated herein by reference.
Item 3.	Source and Amount of Funds or Other Consideration
	All transfers were made without additional consideration, except to the extent described below.
Item 4.	Purpose of Transaction
	On February 12, 2026, the 915 Partnership agreed to sell 10,000,000 shares of the Issuer's Common Stock to Goldman Sachs & Co. LLC (the "Underwriter"), at a price of $48.49 per share (the "Offering Price"), pursuant to the Issuer's automatic shelf registration statement on Form S-3 (Registration No. 333-279042), filed with the Securities and Exchange Commission on May 1, 2024, including the prospectus supplement, dated February 12, 2026 (the "Prospectus Supplement") and the terms and conditions of the Underwriting Agreement, dated as of February 12, 2026 (the "Underwriting Agreement"), by and among the Issuer, the 915 Partnership and the Underwriter. In addition, the 915 Partnership granted the Underwriter an option to purchase an additional 1,500,000 shares of Common Stock (the "Option Shares") at the Offering Price for a period of thirty (30) days from the date of the Prospectus Supplement. As of the date hereof, the Underwriter has not exercised their option to purchase the Option Shares.
Item 5.	Interest in Securities of the Issuer
(a)	The response to Row 11 in each Reporting Person's cover page, indicating the aggregate number and percentage of shares of Common Stock of the Issuer beneficially owned by each Reporting Person, is incorporated herein by reference. Each Reporting Person states that the filing of this Amendment shall not be construed as an admission that such Reporting Person is, for the purposes of Section 13(d) or 13(g) of the Securities Act of 1933, as amended, the beneficial owner of the shares of Common Stock reported as beneficially owned by the other Reporting Persons in this Amendment. The total number of shares which are beneficially owned by the members of the Group as a group is 122,666,110 shares, or approximately 49.49% of the outstanding shares of the Issuer's Common Stock. The number of shares beneficially owned by the Group includes 570,000 shares which may be acquired pursuant to options that are exercisable within sixty (60) days of February 10, 2026. The ownership percentages were calculated based on 247,309,063 outstanding shares of Common Stock of the Issuer as of February 10, 2026 according to the Prospectus Supplement. Beneficial ownership was increased, as appropriate, to include the shares beneficially owned by each Reporting Person that may be acquired pursuant to options exercisable within sixty (60) days of February 10, 2026.
(b)	The responses of each Reporting Person to Rows 7 through 10 on the cover page of this Amendment are incorporated herein by reference.
(c)	N/A
(d)	N/A
(e)	N/A
Item 6.	Contracts, Arrangements, Understandings or Relationships With Respect to Securities of the Issuer
	Each of the individuals, partnerships, limited liability companies, trusts and corporation listed in Item 2(a) (previously defined as the "Group") may be deemed a member of a group consisting of members of the Kim Family, Liam E. Blaney, the Kim Trusts, the Foundation, the 915 Partnership, SI, LP, Sujoda Management, LLC, Sujochil, Susins, LLC and Kim Capital Partners - KCP, LLC, who may each exercise voting or investment power with respect to shares of the Issuer's Common Stock in concert with other members of the Group. None of the trust agreements or other relevant governing documents relating to the Group prohibit the persons authorized to vote shares of Common Stock of the Issuer from voting the shares of Common Stock of the Issuer held by them, in their discretion, in concert with the members of the Group. James J. Kim and Agnes C. Kim are husband and wife and are the parents of Susan Y. Kim, David D. Kim, and John T. Kim. John T. Kim is the sole trustee of the John T. Kim Trust of December 31, 1987, the parent of Allyson Lee Kim and Jason Lee Kim, the co-trustee of various Kim Trusts along with Susan Y. Kim or James J. Kim, and a manager of one of the Kim LLCs along with Liam E. Blaney. Susan Y. Kim is the parent of Alexandra Kim Hay, Jacqueline Mary Panichello, and Dylan James Panichello, is the co-trustee of various Kim Trusts along with John T. Kim or James J. Kim, and is a manager of one of the Kim LLCs along with John T. Kim. David D. Kim is the sole trustee of the James J. Kim 2008 Trust FBO Descendants of David D. Kim dated 2/5/08 and a co-trustee of the Irrevocable Deed of Trust of James J. Kim f/b/o Children of David D. Kim dated 11/11/05. John T. Kim and Susan Y. Kim are co-trustees of the Family Trust under the John T. Kim 2018 Irrevocable Trust Agreement dated 2/6/18, the Irrevocable Deed of Trust of James J. Kim Dated 12/24/92 fbo Alexandra Kim Panichello, the Irrevocable Deed of Trust of James J. Kim Dated 10/3/94 fbo Jacqueline Mary Panichello, the Irrevocable Deed of Trust of James J. Kim Dated 10/15/01 fbo Dylan James Panichello, the Irrevocable Deed of Trust of James J. Kim Dated 10/15/01 fbo Allyson Lee Kim, the Irrevocable Deed of Trust of James J. Kim Dated 11/17/03 fbo Jason Lee Kim, the John T. Kim 2007 Children's Trust U/A Dated 12/28/07, the James J. Kim 2008 Trust fbo Alexandra Kim Panichello Dated 2/5/08, the James J. Kim 2008 Trust fbo Jacqueline Mary Panichello Dated 2/5/08, the James J. Kim 2008 Trust fbo Dylan James Panichello Dated 2/5/08, and the James J. Kim 2008 Trust fbo the Descendants of John T. Kim Dated 2/5/08. James J. Kim and John T. Kim are co-trustees of the John T. Kim 2012 Generation-Skipping Trust U/A dated 12/11/12, the Family Trust under the John T. Kim Irrevocable Trust Agreement dated 12/11/12 and the Susan Y. Kim 2023 Family Distribution Trust. Susan Y. Kim is the sole trustee of the 2024 Grantor Retained Annuity Trust of Susan Y. Kim dated 8/5/24, the 2024 Grantor Retained Annuity Trust of Agnes C. Kim dated 8/5/24, the 2024 Grantor Retained Annuity Trust of James J. Kim dated 8/5/24, the 2025 Grantor Retained Annuity Trust No. 1 of Agnes C. Kim and the 2025 Grantor Retained Annuity Trust of James J. Kim. John T. Kim is the sole trustee of the John T. Kim 2024 GRAT #1 dated 8/9/24 and the John T. Kim 2024 GRAT #2 dated 8/9/2024. The trustees of each Kim Trust may be deemed to be the beneficial owners of the shares held by such Kim Trust. None of the Kim Trusts owns more than five percent of the outstanding shares of the common stock of the Company. John T. Kim, as general partner of the 915 Partnership, has voting and investment power with respect to all of the securities held by the 915 Partnership. The limited partners of the 915 Partnership are two irrevocable trusts created for James J. Kim, two irrevocable trusts created for Agnes C. Kim, SI, LP, and Sujoda Investments II, LP. The general partner of Sujoda Investments II, LP is Sujoda Management, LLC ("Sujoda Management"), and the limited partners are John T. Kim, Susan Y. Kim, and David D. Kim. Sujoda Management is the general partner of SI, LP, and the limited partners are the grandchildren of James J. Kim. The sole members of Sujoda Management are John T. Kim, Susan Y. Kim, and David D. Kim. Susan Y. Kim has sole voting power of Sujoda Management. The general partners of Sujochil are John T. Kim and Susan Y. Kim. The limited partners of Sujochil are John T. Kim, Susan Y. Kim, two irrevocable trusts created by Susan Y. Kim for her descendants, two irrevocable trusts created by John T. Kim for his descendants, the 915 Partnership, two irrevocable trusts created for Agnes C. Kim and two irrevocable trusts created for James J. Kim. John T. Kim and Liam E. Blaney are the managers of Susins, LLC. John T. Kim and Susan Y. Kim are the managers of Kim Capital Partners - KCP, LLC. All of the directors and officers of the Foundation are members of the Kim Family Group. The members of the Kim Family Group might each be expected to vote his, her, or its shares of common stock in concert with the other members of the Kim Family Group. James J. Kim and the 915 Partnership (collectively, the "2009 Investors") and Amkor entered into a voting agreement dated as of March 26, 2009, (the "Voting Agreement") which relates to 49,594,980 shares of Common Stock received by 915 Partnership in exchange for convertible notes issued by Amkor in 2009 (the "Convert Shares"). The voting agreement requires the 2009 Investors to vote the Convert Shares in a "neutral manner" on all matters submitted to Amkor's stockholders for a vote, so that such Convert Shares are voted in the same proportion as all of the other outstanding securities (excluding the other shares beneficially owned by the 2009 Investors) that are actually voted on a proposal submitted to Amkor's stockholders for approval. The 2009 Investors are not required to vote in a "neutral manner" any Convert Shares that, when aggregated with all other voting shares beneficially owned by the 2009 Investors and their affiliates, represent 41.6% or less of the total then-outstanding voting shares of Amkor's Common Stock. The voting agreement terminates upon the earliest of (i) such time as the 2009 Investors or their affiliates no longer beneficially own any of the Convert Shares, (ii) consummation of a change of control (as defined in the voting agreement) or (iii) the mutual agreement of the 2009 Investors and Amkor. On February 12, 2026, the Issuer, the 915 Partnership and the Underwriter entered into the Underwriting Agreement. Pursuant to the terms and conditions of the Underwriting Agreement, the 915 Partnership agreed to sell 10,000,000 shares of the Issuer's Common Stock at the Offering Price. In addition, the 915 Partnership granted the Underwriter an option to purchase 1,500,000 Option Shares at the Offering Price for a period of thirty (30) days from the date of the Prospectus Supplement. As of the date hereof, the Underwriter has not exercised its option to purchase the Option Shares. In connection with the Secondary Offering, pursuant to the Underwriting Agreement, on February 12, 2026, the 915 Partnership executed a lock-up agreement (the "Lock-Up Agreement"), pursuant to which and subject to specified exceptions, it agreed for a period of one hundred eighty (180) days from the date of the Prospectus Supplement not to sell, transfer or otherwise dispose of the shares of the Issuer's Common Stock. The form of Lock-Up Agreement is included as an exhibit to the Underwriting Agreement, which is filed as Exhibit 99.3 herewith. The foregoing descriptions of the Voting Agreement, Underwriting Agreement and Lock-Up Agreement are not intended to be complete and are qualified in their entirety by reference to the full text of such agreements, which are filed as Exhibits 99.2 and 99.3 hereto, respectively, and incorporated herein by reference.
Item 7.	Material to be Filed as Exhibits.
	Exhibit 99.1 Twentieth Amended and Restated Agreement regarding joint filing (filed herewith) Exhibit 99.2 Voting Agreement, dated March 26, 2009, among the Issuer, James J. Kim and the 915 Partnership (incorporated by reference Exhibit 10.1 of the Issuer's Current Report on Form 8-K, filed with the SEC on April 1, 2009 (File No. 000-29472)). Exhibit 99.3 Underwriting Agreement, dated February 12, 2026, among the Issuer, the 915 Partnership and the Underwriter (incorporated by reference Exhibit 1.1 of the Issuer's Current Report on Form 8-K, filed with the SEC on February 13, 2026 (File No. 000-29472)). Exhibit 24.1 Powers of Attorney (filed herewith) Exhibit 24.2 Powers of Attorney (incorporated by reference to Exhibit 24 to the Schedule 13D/A filed by the Reporting Persons on October 4, 2024)

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

James J. Kim

Signature:	/s/ Brian D. Short, Attorney-in-Fact
Name/Title:	Brian D. Short, Attorney-in-fact
Date:	02/17/2026

James J. Kim, as Trustee

Signature:	/s/ Brian D. Short, Attorney-in-Fact
Name/Title:	Brian D. Short, Attorney-in-Fact
Date:	02/17/2026

Agnes C. Kim

Signature:	/s/ Brian D. Short, Attorney-in-Fact
Name/Title:	Brian D. Short, Attorney-in-Fact
Date:	02/17/2026

John T. Kim

Signature:	/s/ Brian D. Short, Attorney-in-Fact
Name/Title:	Brian D. Short, Attorney-in-Fact
Date:	02/17/2026

John T. Kim, as Trustee

Signature:	/s/ Brian D. Short, Attorney-in-Fact
Name/Title:	Brian D. Short, Attorney-in-Fact
Date:	02/17/2026

David D. Kim

Signature:	/s/ Kenneth R. Hillier, Attorney-in-Fact
Name/Title:	Kenneth R. Hillier, Attorney-in-Fact
Date:	02/17/2026

David D. Kim, as Trustee

Signature:	/s/ Kenneth R. Hillier, Attorney-in-Fact
Name/Title:	Kenneth R. Hillier, Attorney-in-Fact
Date:	02/17/2026

Susan Y. Kim

Signature:	/s/ Brian D. Short, Attorney-in-Fact
Name/Title:	Brian D. Short, Attorney-in-Fact
Date:	02/17/2026

Susan Y. Kim, as Trustee

Signature:	/s/ Brian D. Short, Attorney-in-Fact
Name/Title:	Brian D. Short, Attorney-in-Fact
Date:	02/17/2026

Liam E. Blaney

Signature:	/s/ Brian D. Short, Attorney-in-Fact
Name/Title:	Brian D. Short, Attorney-in-Fact
Date:	02/17/2026

John T. Kim Trust of December 31, 1987

Signature:	/s/ Brian D. Short, Attorney-in-Fact
Name/Title:	John T. Kim, as Trustee
Date:	02/17/2026

Irrevocable Deed of Trust of James J. Kim for Jacqueline Mary Panichello dated 10/3/94

Signature:	/s/ Brian D. Short, Attorney-in-Fact
Name/Title:	Susan Y. Kim, as Trustee
Date:	02/17/2026

Irrevocable Deed of Trust of James J. Kim for Alexandra Kim Panichello dated 12/24/92

Signature:	/s/ Brian D. Short, Attorney-in-Fact
Name/Title:	Susan Y. Kim, as Trustee
Date:	02/17/2026

Irrevocable Deed of Trust of James J. Kim for Dylan James Panichello dated 10/15/01

Signature:	/s/ Brian D. Short, Attorney-in-Fact
Name/Title:	Susan Y. Kim, as Trustee
Date:	02/17/2026

Irrevocable Deed of Trust of James J. Kim for Allyson Lee Kim dated 10/15/01

Signature:	/s/ Brian D. Short, Attorney-in-Fact
Name/Title:	John T. Kim, as Trustee
Date:	02/17/2026

Irrevocable Deed of Trust of James J. Kim FBO Jason Lee Kim dated 11/17/03

Signature:	/s/ Brian D. Short, Attorney-in-Fact
Name/Title:	John T. Kim, as Trustee
Date:	02/17/2026

Irrevocable Deed of Trust of James J. Kim f/b/o Children of David D. Kim dated 11/11/05

Signature:	/s/ Kenneth R. Hillier, Attorney in Fact
Name/Title:	David D. Kim, as Trustee
Date:	02/17/2026

James J. Kim 2008 Trust FBO Alexandra Kim Panichello and Descendants dated 2/5/08

Signature:	/s/ Brian D. Short, Attorney-in-Fact
Name/Title:	Susan Y. Kim, as Trustee
Date:	02/17/2026

James J. Kim 2008 Trust FBO Jacqueline Mary Panichello and Descendants dated 2/5/08

Signature:	/s/ Brian D. Short, Attorney-in-Fact
Name/Title:	Susan Y. Kim, as Trustee
Date:	02/17/2026

James J. Kim 2008 Trust FBO Dylan James Panichello and Descendants dated 2/5/08

Signature:	/s/ Brian D. Short, Attorney-in-Fact
Name/Title:	Susan Y. Kim, as Trustee
Date:	02/17/2026

James J. Kim 2008 Trust FBO Descendants of John T. Kim dated 2/5/08

Signature:	/s/ Brian D. Short, Attorney-in-Fact
Name/Title:	John T. Kim, as Trustee
Date:	02/17/2026

James J. Kim 2008 Trust FBO Descendants of David D. Kim dated 2/5/08

Signature:	/s/ Kenneth R. Hillier, Attorney in Fact
Name/Title:	David D. Kim, as Trustee
Date:	02/17/2026

The James and Agnes Kim Foundation, Inc.

Signature:	/s/ Brian D. Short, Attorney-in-Fact
Name/Title:	Susan Y. Kim, as Secretary
Date:	02/17/2026

915 Investments, LP

Signature:	/s/ Brian D. Short, Attorney-in-Fact
Name/Title:	John T. Kim, as General Partner
Date:	02/17/2026

John T. Kim 2007 Children's Trust U/A dated 12/28/07

Signature:	/s/ Brian D. Short, Attorney-in-Fact
Name/Title:	Susan Y. Kim, as Trustee
Date:	02/17/2026

Sujoda Investments, LP

Signature:	/s/ Brian D. Short, Attorney-in-Fact
Name/Title:	Susan Y. Kim, as Manager of Sujoda Management, LLC, its General Partner
Date:	02/17/2026

John T. Kim 2012 Generation-Skipping Trust U/A Dated 12/11/12

Signature:	/s/ Brian D. Short, Attorney-in-Fact
Name/Title:	James J. Kim, as Trustee
Date:	02/17/2026

Family Trust under the John T. Kim 2018 Irrevocable Trust Agreement dated 2/6/18

Signature:	/s/ Brian D. Short, Attorney-in-Fact
Name/Title:	Susan Y. Kim, as Trustee
Date:	02/17/2026

Family Trust under the John T. Kim 2012 Irrevocable Trust Agreement dated 12/11/12

Signature:	/s/ Brian D. Short, Attorney-in-Fact
Name/Title:	James J. Kim, as Trustee
Date:	02/17/2026

Sujochil, LP

Signature:	/s/ Brian D. Short, Attorney-in-Fact
Name/Title:	John T. Kim, as General Partner
Date:	02/17/2026

Sujoda Management, LLC

Signature:	/s/ Brian D. Short, Attorney-in-Fact
Name/Title:	Susan Y. Kim, Manager
Date:	02/17/2026

Susins, LLC

Signature:	/s/ Brian D. Short, Attorney-in-Fact
Name/Title:	John T. Kim, Manager
Date:	02/17/2026

2023 Grantor Retained Annuity Trust of James J. Kim dtd. 4/26/2023

Signature:	/s/ Brian D. Short, Attorney-in-Fact
Name/Title:	Susan Y. Kim, as Trustee
Date:	02/17/2026

2023 Grantor Retained Annuity Trust of Agnes C. Kim dtd. 4/26/2023

Signature:	/s/ Brian D. Short, Attorney-in-Fact
Name/Title:	Susan Y. Kim, as Trustee
Date:	02/17/2026

2023 Grantor Retained Annuity Trust of Susan Y. Kim Dated 9/15/2023

Signature:	/s/ Brian D. Short, Attorney-in-Fact
Name/Title:	Susan Y. Kim, as Trustee
Date:	02/17/2026

Kim Capital Partners - KCP, LLC

Signature:	/s/ Brian D. Short, Attorney-in-Fact
Name/Title:	Susan Y. Kim, Manager
Date:	02/17/2026

2024 Grantor Retained Annuity Trust of Susan Y. Kim dtd. 8/5/2024

Signature:	/s/ Brian D. Short, Attorney-in-Fact
Name/Title:	Susan Y. Kim, as Trustee
Date:	02/17/2026

2024 Grantor Retained Annuity Trust of James J. Kim dtd. 8/5/2024

Signature:	/s/ Brian D. Short, Attorney-in-Fact
Name/Title:	Susan Y. Kim, as Trustee
Date:	02/17/2026

2024 Grantor Retained Annuity Trust of Agnes C. Kim dtd. 8/5/2024

Signature:	/s/ Brian D. Short, Attorney-in-Fact
Name/Title:	Susan Y. Kim, as Trustee
Date:	02/17/2026

John T. Kim 2024 GRAT #1 dtd. 08/09/2024

Signature:	/s/ Brian D. Short, Attorney-in-Fact
Name/Title:	John T. Kim, as Trustee
Date:	02/17/2026

John T. Kim 2024 GRAT #2 dtd. 08/09/2024

Signature:	/s/ Brian D. Short, Attorney-in-Fact
Name/Title:	John T. Kim, as Trustee
Date:	02/17/2026

Susan Y. Kim 2023 Family Distribution Trust

Signature:	/s/ Brian D. Short, Attorney-in-Fact
Name/Title:	John T. Kim, as Trustee
Date:	02/17/2026

2025 Grantor Retained Annuity Trust No. 1 of Agnes C. Kim

Signature:	/s/ Brian D. Short, Attorney-in-Fact
Name/Title:	Susan Y. Kim, as Trustee
Date:	02/17/2026

2025 Grantor Retained Annuity Trust No.1 of James J. Kim

Signature:	/s/ Brian D. Short, Attorney-in-Fact
Name/Title:	Susan Y. Kim, as Trustee
Date:	02/17/2026

FAQ

What major transaction did the Kim family group disclose in the AMKR Schedule 13D/A?

The Kim family’s 915 Investments, LP disclosed selling 10,000,000 Amkor (AMKR) common shares at $48.49 per share in an underwritten secondary offering. This block trade shifts shares to new public investors but does not raise new capital for Amkor itself.

How much of Amkor’s stock does the Kim family group own after this amendment?

After the sale, the Kim family group reports beneficial ownership of 122,666,110 Amkor (AMKR) shares, or about 49.49% of outstanding common stock. This percentage is based on 247,309,063 shares outstanding as of February 10, 2026, including 570,000 option shares exercisable within sixty days.

Who is 915 Investments, LP and what role does it play in Amkor (AMKR)?

915 Investments, LP is a Pennsylvania limited partnership within the Kim family group, with John T. Kim as sole general partner. It holds a significant Amkor stake, executed the 10,000,000-share secondary sale, and is party to a voting agreement covering 49,594,980 “Convert Shares.”

What is the underwriter’s option related to the Amkor secondary offering?

Goldman Sachs & Co. LLC received an option to buy an additional 1,500,000 Amkor (AMKR) shares, called Option Shares, at the same $48.49 offering price. The option lasts thirty days from the February 12, 2026 prospectus supplement date and had not been exercised when reported.

How was the Kim family’s ownership percentage in Amkor (AMKR) calculated?

The group’s 49.49% beneficial ownership was calculated using 247,309,063 Amkor common shares outstanding as of February 10, 2026, as stated in the prospectus supplement. The figure includes 570,000 shares that may be acquired through options exercisable within sixty days of that date.

What is the voting agreement mentioned in the Amkor Schedule 13D/A?

James J. Kim and 915 Investments (the 2009 Investors) have a voting agreement with Amkor covering 49,594,980 “Convert Shares.” It generally requires these shares to be voted in a neutral manner unless the group’s total voting stake falls at or below 41.6% of Amkor’s voting shares.

Is 915 Investments restricted from selling more Amkor (AMKR) shares after this offering?

Yes. Under a lock-up agreement tied to the February 12, 2026 underwritten offering, 915 Investments agreed not to sell, transfer, or dispose of additional Amkor common shares for 180 days, subject to specified exceptions, limiting further near-term secondary sales from this holder.