Slide 1: 4Q25 Investor Conference
4Q25 Investor Conference Feb. 10th, 2026 1
Slide 2: Safe Harbor Notice
Safe Harbor Notice • We have made forward-looking statements in this presentation. Our forward-looking statements contain information regarding, among other things, our financial condition, future expansion plans and business strategies. We have based these forward-looking statements on our current
Slide 3: Agenda
Agenda 01 Financial Results Hsiang-Yun Fan - EVP 02 Business Recap & Outlook James Chen - President 03 Q & A James Chen & Hsiang-Yun Fan 3
Slide 4: Financial Results
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Slide 5: Statement of Comprehensive Income - Consolidated
Statement of Comprehensive Income - Consolidated 4Q25 (In NT$ millions unless otherwise noted) 3Q25 QoQ 4Q24 YoY (Unaudited) Net Sales 26,625 21,771 +22.3% 18,692 +42.4% Gross Profit 11,146 10,166 +9.6% 5,081 +119.4% Gross Margin 41.9% 46.7% -5 ppts 27.2% +15 ppts Operating Expenses 7,054 6,463 +9.1
Slide 6: Revenue by Products - Consolidated
Revenue by Products - Consolidated 4Q25 vs. 3Q25 (QoQ) 47% 42% 28% 33% 29% 28% 27% 26% 2,642 23% 26,625 2,398 NT$M 21,484 21,312 21,771 26% 21,018 20,121 19,993 19,174 18,692 33% -237 38% 37% 37% 42% 42% CMS Flash Logic IC 43% 38% 37% 35% 34% 35% 4Q25 vs. 4Q24 (YoY) 30% 37% 32% 38% 32% 5,377 35% 26%
Slide 7: Revenue and Gross Margin by Products
Revenue and Gross Margin by Products NT$M Memory NT$M Logic IC 51% 43% 40% 42% 38% 41% 30% 34% 37% 35% 36% 34% 21% 19,172 16% 15% 18% 10% 12% 14,132 52% 12,948 12,941 12,824 11,283 11,018 11,190 10,349 53% 58% 62% 56% 8,318 8,417 8,171 8,305 54% 57% 7,905 7,747 59% 65% 7,193 7,217 6,981 48% 47% 46%
Slide 8: Memory Business Quarterly Highlights
Memory Business Quarterly Highlights 4Q25 (In NT$ millions unless otherwise noted) 3Q25 QoQ 4Q24 YoY (Unaudited) Net Sales 19,172 14,132 +35.7% 11,018 +74.0% Gross Profit 8,298 7,183 +15.5% 1,934 +329.1% Gross Margin 43.3% 50.8% -8 ppts 17.6% +26 ppts Operating Expenses 3,554 2,988 +18.9% 2,525 +40.
Slide 9: Balance Sheet - Consolidated
Balance Sheet - Consolidated 12.31.2025 (In NT$ millions unless otherwise noted) 09.30.2025 12.31.2024 (Unaudited) Cash & Cash Equivalents 15,734 8% 17,203 9% 14,100 8% Accounts Receivable 16,071 8% 13,302 7% 10,038 6% Inventories 25,758 14% 25,251 14% 24,201 13% Investments 32,416 17% 22,853 12% 19
Slide 10: Statement of Cash Flow - Consolidated
Statement of Cash Flow - Consolidated 4Q25 (In NT$ millions unless otherwise noted) 3Q25 4Q24 (Unaudited) Cash Flow from Operating Activities 5,516 2,836 2,550 Depreciation & Amortization 3,092 3,126 3,203 Cash Flow from Investing Activities (2,167) (1,621) (3,370) CAPEX (2,135) (1,368) (3,219) Cash
Slide 11: 2025 Financial Highlights
2025 Financial Highlights 2025 (In NT$ millions unless otherwise noted) 2024 YoY (Unaudited) Net Sales 89,406 81,610 +9.6% Gross Margin 35% 29% +6 ppts Operating Margin 6.2% 0.6% +6 ppts Net Income 3,177 710 +2,467 EPS (NT$) NT$0.88 NT$0.14 Operating Cash Flow 11,183 11,126 +57 CAPEX 6,496 17,057 -1
Slide 12: Operating Expenses - Consolidated
Operating Expenses - Consolidated 31% 31% 30% 29% 29% 30% 28% 28% 26% 7,054 NT$M 6,463 809 5,949 5,974 6,087 6,058 5,884 5,748 5,822 788 802 791 799 836 803 SG&A 782 783 1,381 998 974 885 971 912 1,040 985 994 2,217 2,253 2,138 2,202 2,176 2,129 2,151 2,066 2,261 R&D 1,909 1,879 1,990 2,038 1,978 2,
Slide 13: Corporate Value
Corporate Value EPS EBITDA NT Dollar NT$M 3.41 3.23 30% 29% 19% 21% 18% 0.88 16% 0.33 0.14 (0.29) 30,085 2020 2021 2022 2023 2024 2025 27,690 BVPS 18,680 NT Dollar 15,005 23.66 23.99 11,571 12,151 22.08 20.71 20.37 16.44 2020 2021 2022 2023 2024 2025 2020 2021 2022 2023 2024 2025 EBITDA EBITDA to Re
Slide 14: Memory CAPEX
Memory CAPEX 40.8 42.1 (NT$ B) 15.5 12.7 5.5 2022 2023 2024 2025 2026(E) Paid Estimated Cash Basis, as of February 10th, 2026 • 2025 CAPEX was NT$5.5B • 2026 CAPEX is estimated approx. NT$42.1B, in which WFE CAPEX accounts for ~95% 14
Slide 15: Business Recap & Outlook
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Slide 16: Memory Revenue Results
Memory Revenue Results QoQ YoY 4Q25 vs. 3Q25 4Q25 vs. 4Q24 CMS CMS Revenue +40% +139% Bit Shipment Increased low-single digit% Increased more than doubled Blended ASP(US$) Increased mid-thirties% Increased low-twenties% Flash Flash Revenue +32% +39% Bit Shipment Increased low-teens% Increased mid-th
Slide 17: Memory Business Revenue Breakdown by Application
Memory Business Revenue Breakdown by Application Car & Industrial Communication Car & Ind. Comm. NT$M QoQ +36% NT$M QoQ +41% 29% 24% 5,000 4Q25 Consumer Computer 4,000 4,000 18% 29% 3,000 3,000 2,000 2,000 1,000 1,000 0 0 3Q25 4Q25 3Q25 4Q25 Consumer Computer QoQ +30% QoQ +20% NT$M NT$M Car & Ind. C
Slide 18: Memory Business Revenue Breakdown by Application
Memory Business Revenue Breakdown by Application Car & Industrial Communication NT$M NT$M Comm. YoY +29% Car & Ind. YoY +17% 24% 16,000 27% 14,000 14,000 12,000 12,000 2025 Computer 10,000 10,000 Consumer 8,000 8,000 20% 29% 6,000 6,000 4,000 4,000 2,000 2,000 0 0 2024 2025 2024 2025 NT$M Consumer N
Slide 19: Flash Business
Flash Business ❑ Revenue in 2025 increased by 8% YoY ❑ Bit shipment in 2025 increased in the high-teens% range YoY, supported by broader design-ins and continued growth in content per box ❑ World’s No.1 NOR Flash supplier with expanding market leadership 10% 15% 6% 8% 10% 8% 7% 8% 3% 7% 12% 11% 8% 1
Slide 20: CMS Business
CMS Business ❑ Revenue in 2025 increased by 35% YoY ❑ Bit shipment in 2025 increased in the low-forties% range YoY, driven by significant DDR4/LPDDR4 growth ❑ Exponential growth of 20nm revenue share in 2025, continuing into 2026 55% 2% 3% 21% 37% 20% 5% 26% 18% 15% 15% 6% 16% 13% 9% 17% 19% 47% 49%
Slide 21: Market and Business Outlook (1)
Market and Business Outlook (1) ❑ Code Storage Flash ❖ Tight supply and strengthening end-demand growth driving continuous NOR price uptrend in 1H26 and beyond ❖ Supply shortage for SLC NAND continues to intensify, supporting a sustained upward pricing trend throughout 2026 ❖ Growing demand: Automot
Slide 22: Market and Business Outlook (2)
Market and Business Outlook (2) ❑ Overall Market ❖ Tariff uncertainties easing, with FX stabilizing ❖ Driven by explosive AI growth, memory demand is seeing unprecedented tailwinds ❑ Winbond Business ❖ With profitability recovering in 2H25, projecting sequential momentum into 2026 ❖ Flash and CMS ca
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Slide 24: Thank you
Thank you mam Winbond