Welcome to our dedicated page for Amkor Tech SEC filings (Ticker: AMKR), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
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.
Buntyn Cherie reported acquisition or exercise transactions in this Form 4 filing.
Amkor Technology reported that Chief Accounting Officer Cherie Buntyn received a grant of 799 restricted stock units of Amkor common stock. These RSUs were awarded for no cash consideration as part of her compensation for serving as an officer.
The 799 RSUs will vest in three equal annual installments, beginning on the first anniversary of the March 12, 2026 grant date, with all units fully vested on the third anniversary. Following this grant, Buntyn holds 799 RSUs directly.
Amkor Technology, Inc. executive Cherie Buntyn filed an amended Form 3 that does not report any new stock transactions or holdings changes. The amendment is being filed solely to add her power of attorney as an exhibit, and the original beneficial ownership disclosure otherwise remains unchanged.
AMKR Form 144 reporting an intended sale of 5,000 shares of Common Stock to be sold on 03/16/2026 in connection with a Stock Option Exercise for cash. The filing also lists two prior dispositions by Mark N. Rogers: $234,600 for 5,000 shares on 02/17/2026 and $246,400 for 5,000 shares on 01/16/2026.
Amkor Technology President and CEO Kevin K. Engel reported a mix of equity award activity and share sales. On February 24, 2026, he exercised 910 restricted stock units into 910 shares of common stock at $0.00 per share. To cover tax obligations from this vesting, 372 shares were withheld by Amkor at a reported price of $48.53 per share, with the company paying the related taxes on his behalf. Engel also executed an open-market sale of 12,500 shares of common stock at a reported price of $48.75 per share, with actual trades occurring between $48.73 and $48.81. After these transactions, he directly owned 2,953 shares of Amkor common stock.
AMKOR TECHNOLOGY, INC. director Guillaume Marie Jean Rutten exercised 10,748 restricted stock units on February 24, 2026, receiving 10,748 shares of common stock at no cash cost as part of prior equity awards.
On the same date, he sold 20,000 common shares in open-market transactions at a weighted average price of $48.80 per share, with individual prices ranging from $48.80 to $48.86. After these transactions, he directly owned 543,866 shares of Amkor common stock.
Amkor Technology CFO Megan Faust reported routine equity compensation activity involving restricted stock units. On February 24, 2026, 3,493 RSUs were exercised and converted into 3,493 shares of common stock at $0.00 per share, reflecting vesting of prior grants.
To cover tax withholding obligations from this vesting, 1,497 common shares were automatically disposed of at $48.53 per share, with Amkor paying the related taxes on her behalf. After these transactions, Faust directly owned 129,171 shares of Amkor common stock.
Amkor Technology EVP & General Counsel Mark N. Rogers exercised 1,880 restricted stock units into common stock on February 24, 2026, at no cash price under Amkor’s equity plan. To cover tax withholding on this vesting, 806 common shares were withheld at $48.53 per share, leaving him with 38,904 directly owned common shares.
Amkor Technology director David N. Watson exercised stock options for 20,000 shares of common stock on February 25, 2026, converting a Director Stock Option granted in 2016 and fully vested in 2017. A portion of the resulting shares (2,223) was surrendered to cover tax obligations, with no shares bought or sold in the open market.
Amkor Technology Executive Vice President Farshad Haghighi reported a net sale of common stock alongside RSU vesting activity. On February 24, 2026, 1,814 restricted stock units were converted into the same number of common shares at $0.00 per share, and 815 common shares were disposed of at $48.53 to cover tax withholding obligations related to the RSU vesting.
On February 25, 2026, Haghighi executed an open-market sale of 15,624 common shares at an average price of $50.50 per share. Following these transactions, he directly owned 8,354 shares of Amkor common stock.
Morgan Stanley Smith Barney LLC Executive Financial Services submitted a Form 144 disclosing the planned sale of 15,624 shares of common stock of AMKR. The disclosed lots are restricted stock and performance shares dated between 02/16/2026 and 02/24/2026.
The notice lists individual lots of 999, 5,771, 973, 3,943, 965, and 2,973 shares associated with issuer-restricted and performance-share issuances.