Amkor Technology Inc. filings document the regulatory record for a Nasdaq-listed outsourced semiconductor packaging and test company. The company’s 8-K reports furnish results of operations and financial condition, disclose material agreements and other events, and describe capital-structure matters involving common stock, senior notes and convertible senior notes.
AMKR filings also cover governance and ownership subjects through definitive proxy materials, officer appointments and underwriting agreements related to registered secondary offerings. Recent debt disclosures describe 0.00% convertible senior notes due 2031, subsidiary guarantees and their relationship to other senior unsecured indebtedness, while earnings-related filings include non-GAAP measures such as EBITDA alongside GAAP results.
Amkor Technology, Inc. has appointed Cherie Buntyn as Senior Vice President and Chief Accounting Officer, effective February 2, 2026. In this role, she will serve as the company’s principal accounting officer.
Ms. Buntyn, age 50, brings extensive accounting leadership experience from SurveyMonkey, FLIR Systems, Intel Corporation, and Deloitte & Touche LLP. Her starting annual base salary will be $300,000, and she will be eligible for a cash bonus under Amkor’s annual incentive plan with a target of 35% of base salary. The company states there are no related-party or conflict-of-interest relationships or transactions requiring disclosure under the cited Regulation S-K items.
Amkor Technology director Guillaume Marie Jean Rutten reported a planned stock sale. On January 15, 2026, the reporting person sold 10,000 shares of Amkor Technology, Inc. common stock at a weighted average price of $53.14 per share in an open-market transaction coded as a sale. The transaction was carried out under a pre-arranged Rule 10b5-1 trading plan adopted on June 06, 2025. Following this sale, the reporting person directly owned 335,391 shares of Amkor Technology common stock.
Amkor Technology, Inc. executive Mark N. Rogers reported a routine equity transaction involving stock options and common shares. On January 16, 2026, the EVP & General Counsel exercised 5,000 employee stock options at an exercise price of $7.4 per share, receiving 5,000 shares of common stock. On the same date, he sold 5,000 shares of common stock at a price of $49.28 per share pursuant to a Rule 10b5-1 trading plan adopted on August 1, 2025. Following these transactions, he beneficially owned 23,862 shares of common stock directly and 105,000 employee stock options.
Amkor Technology insider plans another stock sale under Rule 144. A Form 144 notice details an intent to sell 5,000 shares of Amkor common stock through Morgan Stanley Smith Barney LLC on or about 01/16/2026, with the shares listed on NASDAQ. The filing notes that 247,193,437 common shares are outstanding.
The 5,000 shares to be sold were acquired the same day, 01/16/2026, via a stock option exercise from the issuer for cash. The notice also reports that Mark N. Rogers sold 20,000 Amkor common shares on 12/16/2025 for gross proceeds of $859,094 and another 20,000 shares on 11/17/2025 for gross proceeds of $633,786.
A holder of AMKR common stock has filed a notice of proposed resale under Rule 144, indicating an intent to sell 10,000 shares through Morgan Stanley Smith Barney LLC on or about 01/15/2026 on the NASDAQ. The filing lists an aggregate market value of about 531,394.00 for these shares, compared with 247,193,437 common shares outstanding.
The shares proposed for sale were acquired as restricted stock from the issuer on 02/24/2024 and 02/16/2024, in amounts of 6,272 and 3,728 shares. The person for whose account the securities are to be sold also reported prior sales of 10,000 shares on 12/15/2025 for gross proceeds of 448,039.00 and 10,000 shares on 11/17/2025 for gross proceeds of 316,791.00.
Amkor Technology director Winston J. Churchill reported exercising stock options and selling shares of the company. On 12/15/2025, he exercised options to buy 5,000 shares of common stock at an exercise price of $19.39 per share, then sold 5,000 shares of common stock at a price of $44.29 per share on the same date. After these transactions, he directly owned 25,888 shares of Amkor common stock. He also continued to hold 15,000 director stock options with a $19.39 exercise price, expiring on 05/18/2031. The option was originally granted on 05/18/2021 for 20,000 shares and fully vested on 05/17/2022.
Amkor Technology, Inc. reports that its President and CEO, who is also a Director, executed a planned stock sale. On 12/15/2025, the reporting person sold 10,000 shares of Amkor common stock at a weighted average price of $44.80 per share, as disclosed in Table I. This transaction was carried out under a Rule 10b5-1 trading plan adopted on June 6, 2025, meaning the sale followed a pre-established schedule rather than being made at the insider’s discretion at the time of sale.
After this transaction, the reporting person beneficially owns 336,699 shares of Amkor common stock in direct form. The filing notes that the actual sales occurred in multiple trades at prices ranging from $44.37 to $45.18 per share, and the insider has undertaken to provide detailed breakdowns of the share amounts at each price upon request.
Amkor Technology executive Mark N. Rogers, EVP & General Counsel, reported an option exercise and share sale. On 12/16/2025 he exercised employee stock options for 20,000 shares of common stock at an exercise price of $7.40 per share, increasing his directly held shares before the sale.
That same day, he sold 20,000 shares of Amkor common stock at a weighted average price of $42.95 per share, in multiple trades between $42.15 and $43.65, under a Rule 10b5-1 trading plan adopted on August 1, 2025. After these transactions, he directly owned 23,862 shares of common stock and 110,000 stock options, part of an original 200,000-share option grant from June 10, 2019 that vested over four years.
Amkor Technology director MaryFrances McCourt exercised a stock option to acquire 20,000 shares of Common Stock at $19.39 per share and, on December 12, 2025, sold 20,000 shares at a weighted-average price of $46.02, with trades between $45.98 and $46.09. She continues to hold 55,918 shares directly.
Amkor Technology Executive Vice President Kevin Engel reported selling 11,000 shares of common stock on 12/12/2025 at a weighted average price of $46.21 per share, with individual trades executed between $45.92 and $46.52. After these sales, he directly beneficially owns 349 shares of Amkor common stock.
A footnote explains that a filing on February 21, 2025 overreported the number of shares withheld to cover tax obligations by 28 shares, which had caused his reported holdings to be understated by that amount. The current ownership figure reflects this 28-share correction.