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鈥檚 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鈥檙e comparing advanced-product cap-ex across quarters, tracking segment profit trends, or simply watching Amkor Technology insider trading Form 4 transactions, you鈥檒l find every document鈥�10-K, 10-Q, 8-K, S-3, DEF 14A proxy statement executive compensation, and more鈥攊ndexed and searchable. Investors use these insights to:
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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鈥檚 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鈥攁n entity affiliated with the Kim family group鈥攔eceived 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 鈥淧,鈥� indicating a purchase/distribution under Section 16 rules.
Following the transaction, Sujoda鈥檚 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鈥檚 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鈥檚 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鈥攃ontrolled by Sujoda Management, LLC, a member of the Kim 10%-owner group鈥�received 441,589 AMKR common shares at an implied $21.85 per share (鈮� $9.7 m). The transfer was coded 鈥淧,鈥� 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鈥� 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鈥檚 internal reallocation of a sizable position (~1.7 % of AMKR鈥檚 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) 鈥� 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.
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