Welcome to our dedicated page for AMKOR TECHNOLOGY 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.
Amkor Technology CFO Megan Faust reported RSU vesting and related tax withholding transactions. On February 16, 2026, 4,176 restricted stock units were exercised into 4,176 shares of common stock at $0.00 per share, increasing her directly held common stock to 101,214 shares.
On the same date, 1,912 shares of common stock at $47.48 per share were withheld by Amkor to cover her tax obligations associated with vesting, reducing her direct holdings to 99,302 shares after settlement. These RSUs come from a 16,703-unit grant awarded on February 16, 2023 that vests in four equal annual installments beginning on the first anniversary of the grant date.
Amkor Technology EVP & General Counsel Mark N. Rogers reported multiple equity transactions in company stock. On February 17, 2026, he exercised employee stock options to acquire 5,000 shares of common stock at $7.40 per share and then sold 5,000 shares of common stock at $46.92 per share in an open-market transaction executed under a pre-established Rule 10b5-1 trading plan.
On February 16, 2026, 1,856 restricted stock units vested and converted into common stock, with 796 shares withheld to cover tax obligations, which the company will pay on his behalf. After these transactions, Rogers directly held 24,922 shares of common stock and 100,000 employee stock options.
Amkor Technology Executive Vice President Farshad Haghighi reported equity award activity involving restricted stock units and common shares. On February 16, 2026, 1,789 restricted stock units were exercised or converted and settled into 1,789 shares of common stock at no cash cost to him.
On the same date, 816 common shares were disposed of in a tax-withholding transaction at $47.48 per share, with the shares withheld by Amkor to cover his tax obligations, and the company paying those taxes on his behalf. After these transactions, he held 9,327 common shares directly. Footnotes indicate the original grant was 7,423 RSUs vesting in four equal annual installments beginning February 16, 2024.
An insider of AMKR has filed a notice of proposed sale under Rule 144 covering 5,316 shares of common stock, with an aggregate market value of 244,719.40. The shares are to be sold through Morgan Stanley Smith Barney LLC on the NASDAQ around 02/17/2026.
The shares derive from restricted stock awards acquired on 09/30/2025 (349 shares) and 12/31/2025 (4,967 shares), both from the issuer. The notice also reports that during the prior three months, the same account holder sold 11,000 common shares for gross proceeds of 508,292.40. Shares outstanding were 247,193,437 at the time referenced.
Amkor Technology’s major shareholder group reported a large secondary sale of shares. On February 12, 2026, 915 Investments, LP, an entity associated with 10% owner John T. Kim, sold 10,000,000 shares of Amkor common stock at $48.49 per share in an underwritten secondary offering.
After the sale, Form 4 shows 29,594,980 Amkor shares held indirectly through 915 Investments, LP, plus additional direct and indirect holdings through GRATs, family trusts, Sujochil, LP, Kim Capital Partners – KCP, LLC, and Sujoda Investments, LP. Kim treats these interests as having a pecuniary stake but disclaims full beneficial ownership beyond that interest.
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.