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.
The Amkor Technology, Inc. (Nasdaq: AMKR) SEC filings page on Stock Titan provides direct access to the company’s regulatory disclosures as filed with the U.S. Securities and Exchange Commission. Amkor is a U.S.-headquartered outsourced semiconductor assembly and test (OSAT) provider and a global leader in semiconductor packaging and test services. Its filings offer detailed insight into financial performance, capital structure, governance, and major corporate actions.
Investors can review annual reports on Form 10-K and quarterly reports on Form 10-Q (when available) to understand Amkor’s net sales by advanced and mainstream product categories, packaging and test services mix, end-market distribution across communications, computing, automotive, industrial and consumer segments, and key metrics such as gross margin and operating income. These reports also describe risk factors, business operations, and the company’s position in the semiconductor packaging and test industry.
Current reports on Form 8-K document material events, including earnings releases, CEO succession plans, executive appointments, board changes, amendments to credit facilities, and new debt offerings. For example, Amkor has filed 8-Ks describing its 5.875% Senior Notes due 2033, the related indenture terms, and the planned redemption of its 6.625% Senior Notes due 2027, as well as the creation of Term A-1 Loans under its credit agreement.
This page also surfaces information on debt covenants and events of default from indenture-related filings, giving readers visibility into limitations on additional indebtedness, liens, sale-leaseback transactions, and certain corporate restructurings. Where applicable, insider transaction reports on Form 4 and proxy statements on Schedule 14A can be used to analyze executive compensation, ownership, and governance practices.
Stock Titan enhances these filings with AI-powered summaries that highlight key points from lengthy documents, helping readers quickly interpret complex 10-K, 10-Q, and 8-K disclosures. Real-time updates from EDGAR ensure that new filings, including material debt, equity, or governance changes, appear promptly, while AI-generated overviews help users focus on the sections most relevant to Amkor’s semiconductor packaging and test business.
Amkor Technology EVP & General Counsel Mark N. Rogers reported the vesting and conversion of restricted stock units into common stock, along with related tax-withholding transactions, on
Amkor Technology director Guillaume Rutten reported equity compensation activity involving restricted stock units and common shares. On February 20, 2026, he exercised time-vested RSUs granted under Amkor’s Equity Incentive Plan from February 20, 2024 and February 20, 2025, converting them into common stock at no cash cost. The RSUs were awarded solely in exchange for his service as a company service provider and vest over three years under predefined schedules, resulting in the acquisition of blocks of common shares that he now holds directly.
Amkor Technology Executive Vice President Farshad Haghighi reported RSU vesting and related share withholdings. On
To cover tax withholding obligations from these vestings, Amkor withheld shares of common stock at a value of
AMKR filing a Form 144 notifying proposed sale of 20,000 common shares through Morgan Stanley Smith Barney LLC, with an associated amount shown as $976,070.00. The filing also lists three recent sales by Guillaume Rutten: 10,000 shares on 12/15/2025 ($448,039.00), 10,000 shares on 01/15/2026 ($531,394.00), and 10,000 shares on 02/17/2026 ($458,927.00).
Amkor Technology CFO Megan Faust reported multiple equity-related transactions on February 18, 2026. She acquired 4,538 shares of common stock and 9,325 shares of common stock upon vesting of performance stock units that were tied to a basic earnings per share goal for the period from January 1, 2025 through December 31, 2025.
To cover related tax obligations, 1,945 shares and 3,996 shares of common stock were withheld by Amkor at a price of $46.74 per share, as a tax-withholding disposition rather than an open-market sale. Faust also received a new grant of 26,743 restricted stock units, which were awarded for her service as an officer and will vest in three equal annual installments beginning on the first anniversary of the grant date.
Amkor Technology Executive Vice President Farshad Haghighi reported multiple equity compensation transactions. He received 18,185 time-vested restricted stock units on February 18, 2026, granted at no cash cost in recognition of his service. These RSUs vest in three equal annual installments beginning on the first anniversary of the grant date, with full vesting on the third anniversary.
On the same date, 2,003 and 5,594 common shares vested from performance stock units that were originally granted in 2024 and 2025. These awards vested after Amkor met a basic earnings-per-share performance goal over a one-year period from January 1, 2025 to December 31, 2025. To cover related tax obligations at a price of $46.74 per share, 1,038 and 2,621 shares of common stock were withheld and delivered back to the company, reducing out-of-pocket taxes for the executive while keeping these dispositions clearly tied to tax withholding rather than open-market sales.
Rutten Guillaume Marie Jean reported acquisition or exercise transactions in this Form 4 filing.
Amkor Technology director Guillaume Marie Jean Rutten reported the vesting of performance-based stock awards, increasing his direct common share holdings. On February 18, 2026, 10,891 shares of common stock vested from performance-vested restricted stock units granted on February 20, 2024, and 30,587 shares vested from units granted on February 20, 2025.
Both awards were granted under Amkor's Equity Incentive Plan and vested based on achieving a basic earnings per share performance goal over a one-year performance period from January 1, 2025 to December 31, 2025. Following these vestings, Rutten directly owns 380,789 shares of Amkor common stock.
Amkor Technology President and CEO Kevin K. Engel reported equity compensation activity centered on restricted stock units and performance units. On February 18, 2026, he acquired 53,487 and 21,394 restricted stock units, both granted at no cash cost under Amkor’s equity incentive plan.
On the same date, 1,777 and 5,594 shares of common stock vested from performance-based awards tied to a basic earnings per share goal over a one-year period beginning January 1, 2025 and ending December 31, 2025. To cover related tax withholding, 814 and 2,398 common shares were disposed of at $46.74 per share, with the company paying the taxes on Engel’s behalf.
AMKOR TECHNOLOGY, INC. executive vice president and general counsel Mark N. Rogers reported multiple equity-related transactions on February 18, 2026. He received 14,976 restricted stock units granted for his service, which will vest in three equal annual installments starting on the first anniversary of the grant date.
On the same date, 2,003 shares and 4,475 shares of common stock vested from performance-vested restricted stock units granted in 2024 and 2025. These PSUs vested based on achieving a basic earnings per share performance goal over a one-year period from January 1, 2025 to December 31, 2025. The company withheld 859 shares and 1,918 shares to cover tax obligations, and will pay the related taxes on his behalf.
Amkor Technology, Inc. files its Form 10-K outlining 2025 performance and strategy as a leading outsourced semiconductor assembly and test provider. Net sales reached $6,708 million, with Advanced Products contributing $5,556 million, or 82.8%, and Mainstream Products $1,152 million, or 17.2%.
The company highlights strength in advanced system-in-package modules with about $3,080 million of 2025 net sales and exposure across communications, computing, automotive/industrial and consumer markets. It is scaling a Vietnam facility opened in 2024 and constructing a new Arizona facility to support regionalized supply chains.
Customer concentration remains high: the ten largest customers represented 72% of 2025 net sales, including Apple at 29.8% and Qualcomm at 11.1%. Amkor employed 30,800 people as of December 31, 2025 and invested $166.7 million in research and development.