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 (AMKR) filed its Q3 2025 10‑Q, showing modest year-over-year growth and continued investment in capacity and liquidity. Net sales were $1,986,968 thousand versus $1,861,589 thousand a year ago, and operating income rose to $158,927 thousand from $149,367 thousand. Diluted EPS was $0.51.
Cash and cash equivalents increased to $1,495,656 thousand as of September 30, 2025, with short‑term investments at $614,703 thousand. Year‑to‑date operating cash flow was $451,126 thousand against capital expenditures of $472,531 thousand, reflecting ongoing capacity build‑out. Advanced products led sales at $1,683,505 thousand.
Amkor refinanced and extended its debt profile: it issued $500,000 thousand of 5.875% senior notes due October 2033 and added $500,000 thousand Term A Loans due May 2030, using proceeds to redeem the remaining 6.625% notes due 2027 and for general corporate purposes. The company declared a quarterly dividend of $0.08269 per share and reported 247,193,437 shares outstanding as of October 21, 2025.
Amkor Technology, Inc. announced a CEO transition. President and CEO Giel Rutten will retire on December 31, 2025, and remain on the Board. The Board unanimously appointed Kevin Engel to succeed him as President, CEO and director, effective immediately after Mr. Rutten’s retirement. Mr. Rutten will provide strategic and advisory services through March 31, 2026.
Mr. Engel’s employment terms include a starting annual base salary of $900,000 and a target annual incentive of 125% of base salary. In February 2026, he will receive long‑term equity awards with a total target value of $5.0 million, plus $1.0 million in restricted stock units vesting in December 2026 and December 2027. His severance agreement provides enhanced benefits upon certain terminations, including change-in-control protections. The company also furnished a press release announcing financial performance for the three and nine months ended September 30, 2025.
Amkor Technology (AMKR) reported an insider transaction by President, CEO, and Director Guillaume Marie Jean Rutten. On 10/15/2025, he sold 10,000 shares of common stock at $30.74 per share under a pre‑arranged Rule 10b5-1 trading plan adopted on June 06, 2025.
After this sale, Rutten beneficially owns 356,699 shares, held directly. This Form 4 indicates a routine, disclosed transaction executed pursuant to a trading plan designed to provide structured selling parameters.
Amkor Technology Executive Vice President Kevin Engel reported the vesting and exercise of 8,692 Restricted Stock Units into common stock on September 30, 2025, together with a tax-withholding disposition of 3,725 shares at $28.40 per share. After these events he directly holds 11,321 shares of common stock. The RSUs stem from a 43,459-unit grant awarded on February 20, 2025 that vests in five equal quarterly installments through June 30, 2026.
Susan Y. Kim, a director and reported 10% owner of Amkor Technology, Inc. (AMKR), filed a Form 4 disclosing a disposition of 4,456,494 shares on 09/23/2025. The filing details numerous indirect holdings through entities and trusts for which she serves as trustee, general partner or manager, including 19,484,809 shares held by Sujochil, LP, 16,710,668 shares held by an LLC treated as a corporation, 4,418,610 shares held by family trusts (excluding GRATs), 3,800,000 shares held by GRATs, 3,483,000 shares held by GRATs of which she was settlor, and 3,789,479 shares indirectly owned via Sujoda Investments, LP. The filer disclaims beneficial ownership except for her pecuniary interest. The filing also reports dividend equivalent units accrued on 09/23/2025 related to time-vested RSUs granted 05/15/2025.
Douglas A. Alexander, a director of Amkor Technology, Inc. (AMKR), received dividend equivalent units that increased his restricted stock unit holdings. The Form 4 reports three accruals of dividend equivalent units (DEUs) on 09/23/2025 tied to time‑vested restricted stock units granted on 05/17/2022, 05/16/2023 and 05/15/2025. Each DEU converts into an additional RSU subject to the same vesting and terms as the underlying award. The reported incremental amounts were 24.3374, 23.7001 and 27.3648 RSUs, bringing the post‑accrual beneficial ownership counts for those grants to 9,204.4883, 8,862.7341 and 9,854.8917 shares of common stock, respectively. These were recorded as acquisitions at $0 price per share because they represent dividend equivalents rather than purchases.
Roger A. Carolin, a director of Amkor Technology, Inc. (AMKR), received dividend equivalent units that increased his restricted stock unit holdings. On 09/23/2025 DEUs were accrued in connection with dividends paid on time-vested RSUs granted on 05/16/2023 and 05/15/2025. The filing reports the accruals as acquisitions of 23.7001 RSUs (related to the 2023 grant) and 27.3648 RSUs (related to the 2025 grant), both with $0 price. After these accruals, the amounts shown as beneficially owned following the transactions are 8,862.7341 and 9,854.8917 shares, respectively. The Form 4 is signed by an attorney-in-fact on behalf of the reporting person and reflects routine equity accruals tied to dividend payments.
Winston J. Churchill, a director of Amkor Technology, Inc. (AMKR), reported on Form 4 that on 09/23/2025 he received 27.3648 restricted stock units as dividend equivalent units related to time‑vested RSUs granted May 15, 2025.
The DEUs were recorded at a price of $0, and following this accrual the reporting person beneficially owns 9,854.8917 shares of common stock on a direct basis. The Form 4 was signed by Mark N. Rogers, attorney‑in‑fact, on 09/25/2025. The filing shows Churchill’s reporting address in Boca Raton, FL, and lists his relationship to the issuer as a director.
AMKOR TECHNOLOGY, INC. (AMKR) reporting person Gil C. Tily, identified as a director, received 27.3648 dividend-equivalent units (DEUs) credited on 09/23/2025 in respect of time-vested restricted stock units (RSUs) originally granted on May 15, 2025. Each DEU represents an additional RSU subject to the same terms as the underlying RSU.
The DEUs were issued with a reported price of $0 and, following the transaction, the reporting person beneficially owns 9,854.8917 shares of common stock in a direct ownership form. The Form 4 was signed via attorney-in-fact on 09/25/2025.
AMKOR TECHNOLOGY, INC. (AMKR) director David N. Watson received 27.3648 restricted stock units (RSUs) credited as dividend equivalent units (DEUs) tied to time‑vested RSUs, recorded as acquired on 09/23/2025 at a $0 price. The DEUs mirror the original RSU grant terms and increased Mr. Watson's direct beneficial ownership to 9,854.8917 shares. The transaction was reported by an attorney‑in‑fact on behalf of the reporting person. This filing documents a routine equity accrual tied to a dividend on the company's RSUs rather than an open‑market purchase or sale.