Corporate filings across DART (Korea), TWSE/MOPS (Taiwan), SEC EDGAR (US), TDnet (Japan), and Chinese regulatory filings — AI-translated to English and Korean with impact tagging for portfolio managers.
The largest shareholder, Hana Micron, amended its previously disclosed stock pledge agreement that could trigger a change in control if fully executed. Key changes include extending Contract #1 (NH Investment & Securities) by six months to November 16, 2026, and replacing Contract #2 with a new KB Securities pledge that reduces pledged shares from 423,819 to 256,806 while keeping the KRW 10 billion collateral amount unchanged. Total shares that would transfer if all pledges are executed rose slightly to 1,462,495 (7.39% stake), while cumulative pledged shares decreased to 4,966,013. The underlying credit support for Hana Micron Vina's USD 200 million loan was also restructured, switching lenders from KDB/Eximbank to Citibank N.A. and others, with Hana Materials' guarantee reduced from USD 240 million to USD 200 million. Overall, this is a routine refinancing/extension rather than new borrowing.
Koo Bon-cheon, the largest shareholder and registered director of LB Semicon, filed an amended large shareholding report triggered by a change in collateral pledge arrangements among special related parties. Total combined holdings remain unchanged at 15,819,778 shares (27.24% of voting shares). However, the number of shares subject to major contracts (collateral pledges) increased materially from 1,082,214 shares (1.86%) to 1,909,608 shares (3.29%), an increase of approximately 827,394 pledged shares. The expanded pledge ratio is noteworthy because a higher proportion of the controlling group's shares is now encumbered as collateral, raising the theoretical risk of forced sales should margin or loan conditions deteriorate.
UMC reported April 2026 revenue of NT$22.66B, up 10.8% YoY and 8.8% MoM from NT$20.83B in March. The sequential acceleration alongside double-digit YoY growth points to firming foundry demand, consistent with broader AI-driven capacity tightness benefiting mature/specialty nodes. YTD revenue of NT$83.70B is up 6.9% versus the same period last year.
ASE Technology Holding reported April 2026 revenue of NT$62.25B, up 19.2% YoY and 1.1% MoM, marking a strong quarter-opener for the OSAT leader. The robust YoY growth signals continued momentum in advanced packaging demand, likely driven by AI accelerator and HBM-related back-end test/assembly work. YTD revenue reached NT$235.91B (+17.7% YoY), confirming a sustained cyclical upturn.
Realtek reported April 2026 revenue of NT$12.72B, up 11.3% YoY and 2.9% MoM, marking a fourth consecutive month of growth and a continued recovery trajectory. The steady sequential uptick alongside double-digit YoY expansion suggests sustained demand across connectivity and PC/networking ICs, with AI-related networking and Wi-Fi 7 ramps likely supporting the mix.
WIN Semiconductors posted April 2026 revenue of NT$1.73B, up 48.9% YoY and 5.2% MoM, marking a sharp acceleration off a soft 2025 base. The GaAs/compound-semi foundry continues to ride AI-driven demand for high-speed optical/RF components used in datacenter networking and HBM-adjacent infrastructure. YTD revenue reached NT$6.32B, +33.4% versus the same period last year.
TSMC reported April 2026 revenue of NT$410.73B, up 17.5% YoY but down 1.1% MoM from March's NT$415.19B. The strong YoY growth continues to reflect robust AI accelerator and HBM-related advanced node demand, while the modest sequential dip suggests normal monthly lumpiness rather than a cyclical inflection.
April 2026 revenue reached NT$4.45B, up 39.5% YoY and 3.7% MoM, marking a sharp acceleration that signals strong AI-driven demand. As an ABF substrate supplier to AI accelerator and HBM ecosystems, this magnitude of YoY growth points to sustained order momentum from AI server and high-end compute customers. YTD revenue of NT$15.63B is up 34.2% versus the same period last year.
Novatek (3034) reported April 2026 revenue of NT$9.23B, up 1.2% YoY and rebounding 8.9% MoM from March's NT$8.47B. The modest YoY gain alongside a sequential pickup suggests stabilizing display driver IC demand, though YTD revenue remains down 10.7% versus the same period in 2025, reflecting lingering softness in the broader DDIC/TDDI cycle outside of AI/HBM-led segments.
This filing likely discloses changes to ON Semiconductor's board of directors or executive team alongside shareholder vote outcomes from the annual meeting. Unless a CEO or CFO departure is involved in the 5.02 item, both disclosures are routine governance events. Full filing body not analyzed; description inferred from form + item codes.