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.
Locating the next clue about wafer-level capacity or customer concentration in Amkor Technology’s 300-page 10-K can feel impossible. Because this OSAT leader juggles advanced flip-chip, system-in-package, and mainstream wire-bond lines across several continents, its regulatory disclosures are packed with dense manufacturing and supply-chain terminology.
Stock Titan turns that complexity into clarity. Our AI-powered summaries unpack every Amkor Technology annual report 10-K simplified for you, surface margin swings in each Amkor Technology quarterly earnings report 10-Q filing, and flag Amkor Technology 8-K material events explained moments after they post to EDGAR. Need to monitor management moves? Receive Amkor Technology Form 4 insider transactions real-time, complete with context on executive stock transactions and option exercises.
Whether you’re comparing advanced-product cap-ex across quarters, tracking segment profit trends, or simply watching Amkor Technology insider trading Form 4 transactions, you’ll find every document—10-K, 10-Q, 8-K, S-3, DEF 14A proxy statement executive compensation, and more—indexed and searchable. Investors use these insights to:
- Spot insider buying or selling before earnings announcements
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John D. Liu, a director of Amkor Technology, Inc. (AMKR), reported a non‑derivative acquisition on 09/23/2025 of 27.3648 restricted stock units (RSUs) recorded as dividend equivalent units (DEUs) related to time‑vested RSUs granted on May 15, 2025. The DEUs accrued upon a dividend payment and carry the same terms as the underlying RSUs. The reported price for the DEUs was $0 and the filing shows 9,854.8917 shares beneficially owned following the transaction. The Form 4 was signed by an attorney‑in‑fact on 09/25/2025.
Daniel J.L. Liao, a director of Amkor Technology (AMKR), recorded a Form 4 disclosing dividend equivalent units credited on time-vested restricted stock units. The filing shows that on 09/23/2025 the reporting person received 27.3648 restricted stock units (RSUs) as dividend equivalent units (DEUs) related to RSUs granted on 05/15/2025. The DEUs carry the same terms as the underlying RSUs and were entered at a price of $0. After the accrual the reporting person beneficially owned 9,854.8917 shares directly. The Form 4 was signed by an attorney-in-fact on behalf of Mr. Liao on 09/25/2025.
Guillaume M. J. Rutten, President and CEO and director of Amkor Technology (AMKR), reported a sale of 10,000 shares of AMKR common stock on 09/23/2025 at $30 per share under a pre-existing Rule 10b5-1 trading plan adopted on 06/06/2025. After the transaction, the reporting person beneficially owned 358,007 shares. The Form 4 was signed by an attorney-in-fact and indicates the sale was executed pursuant to the written plan, which provides an affirmative defense under Rule 10b5-1. No derivative transactions or other changes in ownership were reported on this filing.
AMKOR TECHNOLOGY, INC. (AMKR) submitted a Form 144 reporting a proposed sale of 10,000 shares of common stock through Morgan Stanley Smith Barney LLC on 09/23/2025, with an aggregate market value of $300,000.00. The filing shows the 10,000 shares were originally acquired as restricted stock in three grants: 4,808 shares on 02/24/2023, 192 shares on 07/30/2023, and 5,000 shares on 04/30/2023. The total number of shares outstanding is listed as 247,143,055. The filer certifies no material nonpublic information and reports no sales of the issuer's securities by the filer in the past three months.
Amkor Technology, Inc. issued $500,000,000 aggregate principal amount of 5.875% senior unsecured notes due October 1, 2033, under a newly executed indenture that includes customary covenants limiting certain debt, liens, sale-leaseback transactions and consolidations. Guardian Assets, Inc. initially guarantees the 2033 Notes and additional domestic subsidiaries that guarantee the company’s U.S. senior secured facility will be required to guarantee them. The company may redeem the notes under specified make‑whole and step‑down schedules and must offer to repurchase the notes at 101% upon a defined change of control. Amkor also announced redemption of all $400,000,000 of its 6.625% senior notes due 2027, to be funded with proceeds from the 2033 issuance.
Farshad Haghighi, Executive Vice President of Amkor Technology (AMKR), reported a sale of company stock on 09/09/2025. The filing shows a disposition of 11,792 shares at a reported price of $25 per share, leaving the reporting person with 8,354 shares beneficially owned after the transaction. The Form 4 is signed by an attorney-in-fact and records the transaction under Section 16.
Form 144 notice for Amkor Technology, Inc. (AMKR) shows a proposed sale of 11,792 common shares by an insider through Morgan Stanley Smith Barney, with an aggregate market value of $294,800 based on the filing. The shares represent part of previously acquired awards (restricted stock and performance shares) granted by the issuer between August 2024 and February 2025. The filing states the approximate sale date as 09/09/2025 on the NASDAQ and confirms no securities were reported sold by this person in the past three months.
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