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, Inc. announced its intention to offer $400,000,000 aggregate principal amount of senior notes due 2033. The company stated that it intends to use the proceeds from this proposed 2033 notes offering to redeem in full the $400,000,000 aggregate principal amount outstanding of its 6.625% senior notes due 2027.
The company noted that completion of the 2033 notes offering will not be conditioned on the redemption of the 2027 notes, and this disclosure does not constitute a formal notice of redemption. Amkor attached the related press release as an exhibit to provide further details on the proposed financing and planned redemption.
Form 4 highlight: On 01-Aug-2025 the "2023 Grantor Retained Annuity Trust of Agnes C. Kim" executed two Code G (bona-fide gift) transactions involving Amkor Technology (AMKR) common stock.
- Gifted 280,000 shares to Susan Y. Kim.
- Gifted 280,001 shares to John T. Kim.
No cash consideration was received (price $0). The trust’s direct beneficial ownership fell from 560,001 shares to zero. The filing states that the trust does not concede beneficial ownership of shares now held by other group members.
Because the transfers are intra-family gifts rather than open-market sales, trading supply is unchanged. Still, investors may note that one insider vehicle has fully exited its direct position, marginally reducing reported insider ownership.
Form 4 filing for Amkor Technology (AMKR) discloses that Sujoda Investments, LP—an entity affiliated with the Kim family group—received 441,589 shares of AMKR common stock on 1-Aug-2025. The shares were transferred at a stated price of $21.85 per share and are coded “P,” indicating a purchase/distribution under Section 16 rules.
Following the transaction, Sujoda’s direct holdings rose to 3,789,479 shares. The filing states that the distribution was made by James J. Kim to Sujoda pursuant to an intra-family agreement; Sujoda’s general partner is Sujoda Management, LLC. The filing also clarifies that Sujoda does not concede beneficial ownership of securities held by other members of the Kim family group.
No derivative securities were reported, and no 10b5-1 trading plan was indicated. The change increases Sujoda’s position by roughly 13% versus its immediately prior holding, modestly tightening insider ownership concentration but without altering control status.
Form 4 highlights: On 08/01/2025 Sujoda Investments, LP—controlled by Sujoda Management, LLC, a member of the Kim 10%-owner group—received 441,589 AMKR common shares at an implied $21.85 per share (≈ $9.7 m). The transfer was coded “P,” but the footnote clarifies it was an in-family distribution from James J. Kim rather than an open-market buy. After the transaction, Sujoda Investments’ indirect stake rose to 3,789,479 shares.
The reporting entity elects to treat all Sujoda Investments shares as beneficially owned, yet expressly disclaims beneficial ownership beyond its pecuniary interest. No derivative positions were reported.
Takeaway for investors: The filing increases transparency around the Kim family’s internal reallocation of a sizable position (~1.7 % of AMKR’s 264 m shares outstanding). While it signals continued concentrated insider ownership, the non-cash nature of the transfer limits immediate market impact.
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.