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.
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. (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.
Amkor Technology (AMKR) Q2-25 10-Q highlights:
- Revenue: Q2 net sales rose 3.4% YoY to $1.51 billion; 1H-25 essentially flat at $2.83 billion.
- Margins: Gross margin fell to 12.0% (14.5% LY) on higher input and depreciation costs. SG&A nearly halved, cushioning EBIT; operating margin improved to 6.1% (5.6% LY).
- Earnings: Q2 net income attributable to Amkor dropped 18.6% to $54.4 million ($0.22 diluted EPS). 1H net income slid 39.9% to $75.5 million ($0.30 EPS) on lower gross profit and a higher effective tax rate (29% vs 17%).
- End-market mix: Communications share contracted to 40% of sales (48% LY); Consumer grew to 18% (12%). Advanced products remain dominant at 81% of revenue.
- Cash & liquidity: Cash & equivalents increased $394 million YTD to $1.53 billion; operating cash flow fell to $283 million (-27%). Capex $226 million; capex payable surged to $412 million.
- Leverage: Issued $500 million Term A loans (6.05%, due 2030) and arranged a new $1 billion revolver; total debt rose to $1.58 billion. $125 million of 6.625% 2027 notes to be redeemed 30 July 25.
- Equity & returns: Book value edged up to $4.20 billion; dividends paid YTD $40.9 million ( $0.1654/share).
- Strategic projects: Vietnam facility ramped 2H-24; Arizona advanced-packaging plant proceeds with up to $407 million CHIPS-Act funding, construction set for 2H-25.
Overall, modest top-line growth was offset by margin pressure and higher taxes, leading to EPS contraction while liquidity remains solid but leverage increases.
Amkor Technology Inc. (AMKR) – Form 4 filing dated 07/02/2025
President & CEO Guillaume Marie Jean Rutten reported the vesting and conversion of 8,691 restricted stock units (RSUs) into common shares on 06/30/2025 (transaction code “M”). The conversion carried a $0 exercise price, so no cash changed hands. Following the transaction, Rutten’s directly held common-share position increased to 368,007 shares. In addition, he still holds 34,768 unvested RSUs that continue to vest quarterly through 06/30/2026.
The RSUs stem from a grant of 43,459 units awarded on 02/20/2025, vesting in five equal installments (8,691 shares each) on 06/30/2025, 09/30/2025, 12/31/2025, 03/31/2026 and 06/30/2026. There were no open-market purchases or sales and no disposition of shares, so the filing primarily reflects routine equity-compensation vesting rather than a change in the executive’s investment stance.
For investors, the filing signals: (1) ongoing equity-based compensation alignment between the CEO and shareholders; (2) no immediate selling pressure from management; and (3) minimal dilution impact given the small share count relative to Amkor’s ~246 million shares outstanding.
Form 4 highlights: Amkor Technology’s Chief Financial Officer, Megan Faust, reported routine equity transactions dated 06/30/2025 related to previously granted Restricted Stock Units (RSUs) under the company’s 2021 Equity Incentive Plan.
- Vesting event: 8,691 RSUs vested and were automatically converted into an equal number of common shares (Transaction Code M). The vest carries a stated value of $0 in the filing because RSUs convert without cash consideration.
- Tax-withholding sale: To cover associated tax obligations, 3,725 shares were withheld by Amkor (Transaction Code F) at an indicated price of $20.99 per share.
- Net share change: After the two entries, Faust’s direct ownership decreased from 90,829 to 87,104 shares, a net reduction of 3,725 shares (the amount withheld for taxes). No open-market sale or purchase was executed by the insider.
- Remaining unvested RSUs: 34,768 units continue to vest in equal quarterly tranches on 09/30/2025, 12/31/2025, 03/31/2026, and 06/30/2026, completing the five-installment schedule.
Investor take-away: The filing reflects scheduled equity compensation activity rather than discretionary trading. Because the CFO retained the majority of vested shares and disposals were solely for statutory tax purposes, the transaction is generally viewed as neutral in terms of insider sentiment and should have limited impact on near-term share-price performance.