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.
Guillaume Rutten has filed a notice to sell 10,000 shares of common stock. The planned sale is through Morgan Stanley Smith Barney LLC and covers shares listed on NASDAQ with an aggregate market value of 458,927.00, out of 247,193,437 shares outstanding.
The shares to be sold were acquired as restricted stock from the issuer on 02/24/2024 and 07/01/2024, in amounts of 4,476 and 5,524 shares. Over the past three months, Rutten has already sold 10,000 shares on 12/15/2025 for 448,039.00 and another 10,000 shares on 01/15/2026 for 531,394.00.
915 Investments, LP, a member of a 10% owner group in Amkor Technology, reported selling 10,000,000 shares of Amkor common stock on February 12, 2026. The shares were sold at $48.49 each in an underwritten secondary offering.
After this transaction, 915 Investments, LP directly held 29,594,980 Amkor shares. The filing notes that John T. Kim is the general partner of 915 Investments, LP, and states that the reporting person does not admit beneficial ownership of securities owned by other members of the group.
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.
Mark N Rogers has filed a notice to sell 5,000 shares of Amkor Technology common stock. The planned sale is to be executed through Morgan Stanley Smith Barney LLC on the NASDAQ, with an aggregate market value of $234,600 and 247,193,437 shares outstanding.
The 5,000 shares were acquired on the same date via a stock option exercise paid in cash. Over the past three months, Rogers previously sold 5,000 shares for $246,400 and 20,000 shares for $859,094, all in Amkor common stock.
Amkor Technology, Inc. disclosed that stockholder 915 Investments, LP entered into an underwriting agreement with Goldman Sachs & Co. LLC for the sale of 10,000,000 shares of Amkor common stock at $48.75 per share, under the company’s automatic shelf registration on Form S-3.
The selling stockholder granted the underwriter a 30-day option to purchase up to an additional 1,500,000 shares. 915 Investments, LP is an investment vehicle for members of the family of Susan Y. Kim, Amkor’s Chairman of the Board.
The agreement includes a “clear market” provision under which Amkor agreed not to offer or sell its common stock for 75 days after the final prospectus, subject to exceptions. The selling stockholder and its affiliates also agreed to a 180-day lock-up on remaining shares, subject to exceptions.
Amkor Technology, Inc. has filed a prospectus supplement for the resale of 10,000,000 shares of its common stock by a selling stockholder, 915 Investments, LP. This is a secondary offering, and Amkor will not receive any proceeds from the sale.
The shares are priced at $48.75 per share, implying a public offering size of $487,500,000, with underwriting discounts and commissions of $0.26 per share. The selling stockholder expects proceeds of about $484.9 million before expenses, and has granted Goldman Sachs & Co. LLC a 30‑day option to sell up to 1,500,000 additional shares. Amkor had 247,309,063 shares outstanding as of February 10, 2026.
Amkor Technology, Inc. is offering 10,000,000 shares of common stock for resale by the selling stockholder 915 Investments, LP under a Rule 424(b)(7) prospectus supplement. Amkor will not receive any proceeds from this secondary sale.
The underwriter, Goldman Sachs & Co. LLC, has a 30‑day option to buy up to an additional 1,500,000 shares from the selling stockholder. The transaction reduces, but does not eliminate, the Kim family’s controlling stake; their group is expected to hold about 49.5% of voting shares after the offering, or 48.9% if the option is fully exercised.
The filing also provides preliminary unaudited 2025 results. Net sales were $6.71 billion compared with $6.32 billion in 2024, and net income attributable to Amkor was $373.9 million versus $354.0 million. Total assets were $8.14 billion and long‑term debt $1.28 billion as of December 31, 2025, with cash and cash equivalents of $1.38 billion.
Amkor Technology, Inc. is offering 10,000,000 shares of common stock for resale by the selling stockholder 915 Investments, LP under a Rule 424(b)(7) prospectus supplement. Amkor will not receive any proceeds from this secondary sale.
The underwriter, Goldman Sachs & Co. LLC, has a 30‑day option to buy up to an additional 1,500,000 shares from the selling stockholder. The transaction reduces, but does not eliminate, the Kim family’s controlling stake; their group is expected to hold about 49.5% of voting shares after the offering, or 48.9% if the option is fully exercised.
The filing also provides preliminary unaudited 2025 results. Net sales were $6.71 billion compared with $6.32 billion in 2024, and net income attributable to Amkor was $373.9 million versus $354.0 million. Total assets were $8.14 billion and long‑term debt $1.28 billion as of December 31, 2025, with cash and cash equivalents of $1.38 billion.
Amkor Technology reported stronger results for the fourth quarter and full year 2025. Fourth quarter net sales were $1.89 billion, up 16% year-on-year, with net income of $172 million, or $0.69 per diluted share. For 2025, net sales reached $6.71 billion, up 6%, and net income was $374 million, or $1.50 per diluted share, with EBITDA of $1.16 billion and free cash flow of $308 million. Operating cash flow was $1.10 billion, and year-end cash and short‑term investments totaled $1.99 billion against total debt of $1.45 billion. The board increased the quarterly dividend from $0.08269 to $0.08352 per share, effective with the December 23, 2025 payment. For first quarter 2026, Amkor guides net sales of $1.60–$1.70 billion, gross margin of 12.5%–13.5%, and net income of $45–$70 million, or $0.18–$0.28 per diluted share, and plans full‑year 2026 capital expenditures of about $2.5–$3.0 billion.
Amkor Technology, Inc.’s Chief Accounting Officer, Cherie Buntyn, filed an initial ownership report on Form 3. The filing states that no Amkor Technology securities, either non-derivative or derivative, are beneficially owned. This serves as a baseline disclosure of insider holdings for regulatory reporting purposes.
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.