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 (AMKR) – Form 4 filed 8 Aug 2025 for 1 Aug 2025 transactions
Director/10% owner Susan Y. Kim disclosed several equity movements:
- Gifts/GRAT distributions (Code G): 438,002 and 280,000 shares moved from 2023 Grantor Retained Annuity Trusts to Kim; equal amounts were concurrently distributed to other family members, all at $0.
- Open-market purchase (Code P): Sujoda Investments LP, attributed to Kim, bought 441,589 shares at $21.85.
Post-transaction ownership
- Direct: 4,456,494 shares.
- Indirect: interests in family entities and trusts totaling about 51.7 million shares (19.48 m via Sujochil LP, 16.71 m via Kim Capital Partners, 4.42 m family trusts, 3.79 m Sujoda Investments, plus several GRATs).
No derivative securities were reported. Most changes stem from estate-planning reallocations, but the sizeable market purchase indicates ongoing insider confidence. Kim disclaims beneficial ownership beyond her pecuniary interest.
Amkor Technology, Inc. (AMKR) – Form 4 insider filing (31 July 2025): Director and officer Agnes C. Kim reported receiving 1,738,000 AMKR common shares on 30 Jul 2025 via distribution from her 2023 Grantor Retained Annuity Trust (Code G – gift/GRAT distribution). Her direct ownership rose to 1,833,000 shares.
In a parallel GRAT distribution, 2,711,000 shares were transferred to Ms. Kim’s spouse, James J. Kim; she reports indirect beneficial ownership of 12,731,870 shares held by the spouse.
No cash consideration was paid ($0 price), and no shares were sold. The filing reflects internal family estate-planning transfers rather than open-market buying. Nonetheless, the Kim family’s aggregate stake increased in reported direct holdings, reinforcing its sizable insider position.
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