Reported relationships
Latest disclosed role at each company.
| Company | Last reported as | Report date | Published |
|---|---|---|---|
| AMKOR TECHNOLOGY, INC.AMKR · Entity 3481 | Director | September 22, 2026 | September 24, 2026 |
Disclosed balances
About these balances
Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.
AMKOR TECHNOLOGY, INC.
Report date September 22, 2026 · Filed September 24, 2026
| Security / award | Ownership account | Disclosed shares / units | Disclosure context |
|---|---|---|---|
| Restricted Stock UnitsSEC Table II · derivative / convertible security | Direct | 8,916.9241 |
Reported balance
After 2026-09-22 transaction · row 1
Instrument identity requires review; Table II rows are not merged.
1 source rowRow 1 · 2026-09-22 · Grant · Acquired 12.9709 · Balance 8,916.9241 F1: Represents dividend equivalent units ("DEUs") accrued upon the payment of a dividend on September 22 2026 with respect to time-vested restricted stock units ("RSUs") of Amkor Technology, Inc. (the "Issuer") granted to the Reporting Person on May 16, 2023. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued. |
| Restricted Stock UnitsSEC Table II · derivative / convertible security | Direct | 2,619.5144 |
Reported balance
After 2026-09-22 transaction · row 2
Instrument identity requires review; Table II rows are not merged.
1 source rowRow 2 · 2026-09-22 · Grant · Acquired 3.9978 · Balance 2,619.5144 F2: Represents DEUs accrued upon the payment of a dividend on September 22, 2026 with respect to RSUs of the Issuer granted to the Reporting Person on May 13, 2026. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued. |
Filing footnotes · ownership attribution and instrument terms
F1: Represents dividend equivalent units ("DEUs") accrued upon the payment of a dividend on September 22 2026 with respect to time-vested restricted stock units ("RSUs") of Amkor Technology, Inc. (the "Issuer") granted to the Reporting Person on May 16, 2023. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued.
F2: Represents DEUs accrued upon the payment of a dividend on September 22, 2026 with respect to RSUs of the Issuer granted to the Reporting Person on May 13, 2026. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued.
Transaction history
JSON APIPurchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”
The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.
| Transaction date | Company | Activity / security | Shares / units | Reported price | Reported value | Details |
|---|---|---|---|---|---|---|
| February 11, 2021 Filed Feb 16, 2021 21:34 UTC | AMKOR TECHNOLOGY, INC. AMKR · Entity 3481 | Exercise / conversionDirector Stock Option (Right to Buy) · Derivative | 4,657 | $0.00 Strike: $9.45 | $0.00 |
DisclosureSEC source: 0001209191-21-010753 · doc4.xml · derivative · entry 7 McCourt MaryFrances · CIK 0001730724 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 4,657 shares Expires 2028-02-06 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F2 · derivative.exercise_date: This stock option was granted on February 6, 2018 and vests as follows: the options vest 100% on the earlier of the first anniversary of the grant date or the date of the first annual meeting of stockholders following the grant date. Read SEC document |
| February 11, 2021 Filed Feb 16, 2021 21:34 UTC | AMKOR TECHNOLOGY, INC. AMKR · Entity 3481 | SaleCommon Stock | 20,000 | $21.66 | $433,200.00 |
DisclosureSEC source: 0001209191-21-010753 · doc4.xml · nonDerivative · entry 6 McCourt MaryFrances · CIK 0001730724 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 40,498 F1 · price: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from 21.64 to 21.71. Read SEC document |
| February 11, 2021 Filed Feb 16, 2021 21:34 UTC | AMKOR TECHNOLOGY, INC. AMKR · Entity 3481 | Exercise / conversionCommon Stock | 20,000 | $7.31 | $146,200.00 |
DisclosureSEC source: 0001209191-21-010753 · doc4.xml · nonDerivative · entry 5 McCourt MaryFrances · CIK 0001730724 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 60,498 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. Read SEC document |
| February 11, 2021 Filed Feb 16, 2021 21:34 UTC | AMKOR TECHNOLOGY, INC. AMKR · Entity 3481 | SaleCommon Stock | 2,000 | $21.66 | $43,320.00 |
DisclosureSEC source: 0001209191-21-010753 · doc4.xml · nonDerivative · entry 4 McCourt MaryFrances · CIK 0001730724 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 40,498 F1 · price: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from 21.64 to 21.71. Read SEC document |
| February 11, 2021 Filed Feb 16, 2021 21:34 UTC | AMKOR TECHNOLOGY, INC. AMKR · Entity 3481 | Exercise / conversionCommon Stock | 2,000 | $8.51 | $17,020.00 |
DisclosureSEC source: 0001209191-21-010753 · doc4.xml · nonDerivative · entry 3 McCourt MaryFrances · CIK 0001730724 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 42,498 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. Read SEC document |
| February 11, 2021 Filed Feb 16, 2021 21:34 UTC | AMKOR TECHNOLOGY, INC. AMKR · Entity 3481 | SaleCommon Stock | 4,657 | $21.66 | $100,870.62 |
DisclosureSEC source: 0001209191-21-010753 · doc4.xml · nonDerivative · entry 2 McCourt MaryFrances · CIK 0001730724 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 40,498 F1 · price: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from 21.64 to 21.71. Read SEC document |
| February 11, 2021 Filed Feb 16, 2021 21:34 UTC | AMKOR TECHNOLOGY, INC. AMKR · Entity 3481 | Exercise / conversionCommon Stock | 4,657 | $9.45 | $44,008.65 |
DisclosureSEC source: 0001209191-21-010753 · doc4.xml · nonDerivative · entry 1 McCourt MaryFrances · CIK 0001730724 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 45,155 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. Read SEC document |
| May 19, 2020 Filed May 20, 2020 20:00 UTC | AMKOR TECHNOLOGY, INC. AMKR · Entity 3481 | GrantDirector Stock Option (Right to Buy) · Derivative | 20,000 | $0.00 Strike: $9.83 | $0.00 |
DisclosureSEC source: 0001209191-20-030853 · doc4.xml · derivative · entry 2 McCourt MaryFrances · CIK 0001730724 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 20,000 Underlying: Common Stock · 20,000 shares Expires 2030-05-19 F2 · derivative.exercise_date: These options vest 100% on the earlier of the first anniversary of the grant date or the date of the first annual meeting of stockholders following the grant date. Read SEC document |
| May 19, 2020 Filed May 20, 2020 20:00 UTC | AMKOR TECHNOLOGY, INC. AMKR · Entity 3481 | GrantCommon Stock | 6,106 | $0.00 | $0.00 |
DisclosureSEC source: 0001209191-20-030853 · doc4.xml · nonDerivative · entry 1 McCourt MaryFrances · CIK 0001730724 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 37,998 F1 · shares: These are restricted shares which vest 100% on the earlier of the first anniversary of the grant date or the date of the first annual meeting of stockholders following the grant date. Read SEC document |
| November 01, 2019 Filed Nov 4, 2019 21:45 UTC | AMKOR TECHNOLOGY, INC. AMKR · Entity 3481 | Exercise / conversionDirector Stock Option (Right-to-Buy · Derivative | 18,000 | $0.00 Strike: $8.51 | $0.00 |
DisclosureSEC source: 0001209191-19-054925 · doc4.xml · derivative · entry 2 McCourt MaryFrances · CIK 0001730724 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 2,000 Underlying: Amkor Technology, Inc., Common Stock · 18,000 shares Expires 2028-05-01 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · derivative.exercise_date: These options vest 100% on the earlier of the first anniversary of the grant date, or the date of the first annual meeting of stockholders following the grant date. Read SEC document |
| November 01, 2019 Filed Nov 4, 2019 21:45 UTC | AMKOR TECHNOLOGY, INC. AMKR · Entity 3481 | GrantAmkor Technology, Inc., Common Stock | 18,000 | $8.51 | $153,180.00 |
DisclosureSEC source: 0001209191-19-054925 · doc4.xml · nonDerivative · entry 1 McCourt MaryFrances · CIK 0001730724 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 31,892 Read SEC document |
| May 16, 2019 Filed Jan 29, 2021 22:13 UTC | AMKOR TECHNOLOGY, INC. AMKR · Entity 3481 | PurchaseCommon Stock | 2,500 | $7.26 | $18,147.50 |
DisclosureSEC source: 0001209191-21-006145 · doc4.xml · nonDerivative · entry 1 McCourt MaryFrances · CIK 0001730724 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 40,498 Read SEC document |
| May 15, 2019 Filed May 17, 2019 21:45 UTC | AMKOR TECHNOLOGY, INC. AMKR · Entity 3481 | GrantDirector Stock Option (Right to Buy) · Derivative | 20,000 | $0.00 Strike: $7.31 | $0.00 |
DisclosureSEC source: 0001209191-19-031071 · doc4.xml · derivative · entry 2 McCourt MaryFrances · CIK 0001730724 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 20,000 Underlying: Amkor Technology, Inc, Common Stock · 20,000 shares Expires 2029-05-15 F2 · derivative.exercise_date: These options vest 100% on the earlier of the first anniversary of the grant date, or the date of the first annual meeting of stockholders following the grant date. Read SEC document |
| May 15, 2019 Filed May 17, 2019 21:45 UTC | AMKOR TECHNOLOGY, INC. AMKR · Entity 3481 | GrantCommon Stock | 8,207 | $0.00 | $0.00 |
DisclosureSEC source: 0001209191-19-031071 · doc4.xml · nonDerivative · entry 1 McCourt MaryFrances · CIK 0001730724 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 13,892 F1 · shares: These are restricted shares which vest 100% on the earlier of the first anniversary of the grant date, or the date of the first annual meeting of stockholders following the grant date. Read SEC document |
| May 01, 2018 Filed May 3, 2018 22:00 UTC | AMKOR TECHNOLOGY, INC. AMKR · Entity 3481 | GrantDirector Stock Option (Right to Buy) · Derivative | 20,000 | $0.00 Strike: $8.51 | $0.00 |
DisclosureSEC source: 0001209191-18-027796 · doc4.xml · derivative · entry 2 McCourt MaryFrances · CIK 0001730724 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 20,000 Underlying: Common Stock · 20,000 shares Expires 2028-05-01 F2 · derivative.exercise_date: These options vest 100% on the earlier of the first anniversary of the grant date, or the date of the first annual meeting of stockholders following the grant date, subject to continued service through the applicable date. Read SEC document |
| May 01, 2018 Filed May 3, 2018 22:00 UTC | AMKOR TECHNOLOGY, INC. AMKR · Entity 3481 | GrantCommon Stock | 4,700 | $0.00 | $0.00 |
DisclosureSEC source: 0001209191-18-027796 · doc4.xml · nonDerivative · entry 1 McCourt MaryFrances · CIK 0001730724 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 5,685 F1 · shares: These are restricted shares which vest 100% on the earlier of the first anniversary of the grant date, or the date of the first annual meeting of stockholders following the grant date, subject to continued service through the applicable date. Read SEC document |
| February 06, 2018 Filed Feb 8, 2018 18:58 UTC | AMKOR TECHNOLOGY, INC. AMKR · Entity 3481 | GrantStock Option (Right to Buy) · Derivative | 4,657 | $0.00 Strike: $9.45 | $0.00 |
DisclosureSEC source: 0001209191-18-008333 · doc4.xml · derivative · entry 2 McCourt MaryFrances · CIK 0001730724 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 4,657 Underlying: Common Stock · 4,657 shares Expires 2028-02-06 F2 · derivative.exercise_date: These options vest 100% on the earlier of the first anniversary of the grant date, or the date of the first annual meeting of stockholders following the grant date, subject to continued service through the applicable date. Read SEC document |
| February 06, 2018 Filed Feb 8, 2018 18:58 UTC | AMKOR TECHNOLOGY, INC. AMKR · Entity 3481 | GrantCommon Stock | 985 | $0.00 | $0.00 |
DisclosureSEC source: 0001209191-18-008333 · doc4.xml · nonDerivative · entry 1 McCourt MaryFrances · CIK 0001730724 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 985 F1 · shares: These are restricted shares which vest 100% on the earlier of the first anniversary of the grant date, or the date of the first annual meeting of stockholders following the grant date, subject to continued service through the applicable date. Read SEC document |
Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.