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| November 4, 2025 | © Yokogawa Electric Corporation | November 4, 2025 | © Yokogawa Electric Corporation Securities Code: 6841 Yokogawa Electric Corporation Financial Results for 1st Half of Fiscal Year 2025 November 4, 2025
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| November 4, 2025 | © Yokogawa Electric Corporation | November 4, 2025 | © Yokogawa Electric Corporation Contents 2 1. Financial Results for 1st Half of Fiscal Year 2025 P. 3 Michiko Nakajima Director, Vice President & Executive Officer, Head of Accounting & Treasury Headquarters 2. Financial Appendix P. 19 Quarterly Financial Results Non-operating / Extraordinary Income and Expenses Order Backlog Trend by Segment Order Backlog Trend by Control Subsegment Control Segment Order Trend by Project Size Trend of R&D Expenses, Depreciation, and CAPEX Trend of Balance Sheet / Trend of Stock Price 3. Towards the Achievement of the Growth for Sustainability 2028 Medium-term Business Plan P. 29 Kunimasa Shigeno Director, President & CEO, Representative Executive Officer
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| November 4, 2025 | © Yokogawa Electric Corporation | November 4, 2025 | © Yokogawa Electric Corporation Financial Results for 1st Half of Fiscal Year 2025 (April 1, 2025 – September 30, 2025) Michiko Nakajima Director, Vice President & Executive Officer, Head of Accounting & Treasury Headquarters November 4, 2025
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| November 4, 2025 | © Yokogawa Electric Corporation Key Points 4 ◼ FY25 1H results: Sales and profit increased - Summary: • Orders, Sales and operating income increased, despite the negative impact of the appreciation of the yen. - Segments: Control: Sales and operating income increased year on year. Measuring instruments: Sales increased, and operating income remained steady year-on-year performance. New businesses and others: Steady year-on-year performance ◼ FY25 earnings forecasts: <Change> • Revision to exchange rate （US$1: ¥140 → ¥145）
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| November 4, 2025 | © Yokogawa Electric Corporation 291.0 300.4 +9.5 +3.3% (7.5) 266.6 282.0 +15.4 +5.8% (6.9) 36.3 39.0 +2.7 +7.4% (3.0) 13.6 13.8 +0.2pt － － 35.9 39.7 +3.8 +10.6% (3.2) 24.6 29.4 +4.8 +19.5% (2.8) Exchange rate US$1= ¥152.40 ¥146.26 (6.14) － － FY24 1H FY25 1H Difference Growth rate Impact of exchange rate Orders Sales Operating income ROS(%) Ordinary income Profit attributable to owners of parent ◆ Orders increased, due to the acquisition of large-scale projects. (excluding the impact of exchange rates: +¥17.0 billion, +5.8%) ◆ Sales increased, supported by a strong backlog of orders. (excluding the impact of exchange rates: +¥22.3 billion, +8.4%) ◆ Operating income increased mainly as a result of higher gross profit driven by sales growth. (excluding the impact of exchange rates: +¥5.7 billion, +15.7%) Summary of FY25 1H Results (YoY Comparison) 5 （Billion ¥）
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| November 4, 2025 | © Yokogawa Electric Corporation 6 Increase in gross profit from higher sales (excluding the impact of exchange rates) （Billion ¥） FY24 1H FY25 1H US$ 152.40 146.26 EUR 165.72 168.84 FY25 1H operating income FY24 1H operating income Increase in SG&A FY25 1H operating income (excluding the impact of exchange rates) Exchange rates （¥） Analysis of Operating Income (YoY Comparison) (1.1) (3.9) 36.3 39.0 +10.7 (3.0) 42.0 Lower gross margin
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| November 4, 2025 | © Yokogawa Electric Corporation 29.5 33.9 36.1 4.4 2.9 3.0 (0.2) (0.5) (0.1) 33.7 36.3 39.0 236.2 250.6 264.5 16.1 14.2 15.22.2 1.7 2.4254.5 266.6 282.0 Comparison for Orders, Sales, and Operating Income by Segment FY23 1H FY24 1H FY25 1H FY23 1H FY24 1H FY25 1H FY23 1H FY24 1H FY25 1H SalesOrders Operating income （Billion ¥） Control Measuring instruments New businesses and others 7 Difference Difference Difference ◆ Control: • Orders increased. (excluding the impact of exchange rates: +¥15.7 billion, +5.7%) • Sales increased. (excluding the impact of exchange rates: +¥20.3 billion, +8.1%) • Operating income increased. (excluding the impact of exchange rates: +¥4.8 billion, +14.2%) ◆ Measuring instruments: • Orders increased. (excluding the impact of exchange rates: +¥0.9 billion, +5.5%) • Sales increased. (excluding the impact of exchange rates: +¥1.3 billion, +9.1%) • Operating income remained steady year-on-year performance. (excluding the impact of exchange rates: +¥0.4 billion, +14.7%) 251.6 273.1 281.7 13.2 15.8 16.31.4 2.0 2.4266.1 291.0 300.4 +9.5 +0.4 +0.5 +8.6 +15.4 +0.6 +0.9 +13.9 +2.7 +0.1 +2.2 +0.4
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| November 4, 2025 | © Yokogawa Electric Corporation Orders FY24 1H (A) FY25 1H (B) Difference (B-A) Sales FY24 1H (A) FY25 1H (B) Difference (B-A) Japan 66.2 72.0 +5.8 Japan 62.1 69.7 +7.6 Asia 87.2 86.4 (0.8) Asia 88.0 79.2 (8.7) （Southeast Asia, Far East) 39.6 44.3 +4.7 （Southeast Asia, Far East) 39.3 38.2 (1.1) （China） 31.2 29.5 (1.7) （China） 36.1 29.3 (6.8) （India） 16.5 12.7 (3.8) （India） 12.6 11.7 (0.8) Europe and CIS 21.4 27.4 +6.0 Europe and CIS 25.0 30.5 +5.6 Middle East and Africa 69.2 65.3 (3.8) Middle East and Africa 40.7 52.0 +11.3 North America 19.9 20.9 +0.9 North America 25.2 24.7 (0.5) Central and South America 9.2 9.7 +0.5 Central and South America 9.8 8.3 (1.4) Outside Japan 207.0 209.8 +2.8 Outside Japan 188.5 194.8 +6.2 Consolidated 273.1 281.7 +8.6 Consolidated 250.6 264.5 +13.9 Exchange rate USD1$＝ ¥152.40 ¥146.26 (6.14) Exchange rate USD1$＝ ¥152.40 ¥146.26 (6.14) Orders and Sales by Region in Control Segment 8 （Billion ¥） ◆ Orders increased, driven by a rise in the number of large-scale projects, primarily in Europe, Japan, and Southeast Asia. In the Middle East, despite a reactionary decline following significant orders in the same period last year, performance remains on par year-over-year when excluding currency effects.
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| November 4, 2025 | © Yokogawa Electric Corporation Orders and Sales by Control Subsegment 9 Life Materials Energy & Sustainability Life Materials Energy & Sustainability （Billion ¥） Difference SalesOrders *The water business, formerly part of the Life business, was moved to the Energy & Sustainability business at the beginning o f FY24. Accordingly, the figures for FY23 have also been changed. Transferred (Life business→ Energy & Sustainability business) FY23: Orders transferred ¥9.0 billion, Sales transferred ¥6.9 billion DifferenceGrowth rate Growth rate 131.3 152.6 163.9 98.4 98.9 92.9 21.9 21.7 24.9251.6 273.1 281.7 FY23 1H FY24 1H FY25 1H 118.9 126.4 143.0 98.1 103.3 98.9 19.2 20.9 22.6236.2 250.6 264.5 FY23 1H FY24 1H FY25 1H +8.6 +3.2% +3.2 +14.9% (6.0) (6.1%) +11.4 +7.5% +13.9 +5.5% +1.7 +8.0% (4.4) (4.2%) +16.6 +13.1% Exchange rate (US$1/¥) 142.61 146.26152.40 Exchange rate (US$1/¥) 142.61 146.26152.40
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| November 4, 2025 | © Yokogawa Electric Corporation 0 100 1Q 2Q 3Q 4Q 1Q 2Q 3Q 4Q 1Q 2Q FY23 FY24 FY25 0 500 1Q 2Q 3Q 4Q 1Q 2Q 3Q 4Q 1Q 2Q FY23 FY24 FY25 10 Energy & Sustainability Materials Life 小口 大口 小口 大口 小口 大口 Control Subsegment Order Trend by Project Size ■Base orders*1 ■Large orders*2 ■Base orders ■Large orders ■Base orders ■Large orders *1 Base orders: Less than ¥300M/US$3M. Mainly OPEX business such as MRO and system upgrades *2 Large orders: More than ¥300M/US$3M. Mainly CAPEX business such as installation of a system （Billion ¥） 0 500 1Q 2Q 3Q 4Q 1Q 2Q 3Q 4Q 1Q 2Q FY23 FY24 FY25 139.63 146.66145.58 146.14 149.88 158.15 154.19 151.21 144.11 148.40 Quarterly average exchange rate (US$1/¥) Quarterly average exchange rate (US$1/¥) Quarterly average exchange rate (US$1/¥) 139.63 146.66145.58 146.14 149.88 158.15 154.19 151.21 144.11 148.40 139.63 146.66145.58 146.14 149.88 158.15 154.19 151.21 144.11 148.40
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| November 4, 2025 | © Yokogawa Electric Corporation 27.6 26.0 23.4 28.9 22.5 24.2 8.0 5.6 6.8 6.1 6.7 5.9 5.9 5.4 4.7 6.2 5.2 4.0 3.4 3.0 3.7 4.5 4.0 4.4 7.3 6.8 7.7 9.4 7.8 8.1 37.8 25.4 25.6 32.1 34.6 31.4 23.1 20.5 37.8 29.1 28.3 28.0 7.1 6.1 4.7 5.2 5.1 6.0 2.0 1.5 2.2 1.9 1.6 3.3 3.9 7.5 7.5 4.2 4.5 6.9 10.6 7.1 6.6 8.4 7.6 6.7 Quarterly average exchange rate (US$1/¥) （Billion ¥） 11 Renewable Energy Upstream Downstream Water Power Other E&S 2Q 3Q 4Q 1Q FY25 Food & Beverage Pharmaceutical Chemical Mobility & Electric Mining & Metals Pulp & Paper Other Materials Other Life 1Q FY24 Energy & Sustainability Materials Orders by Industry in Control Segment 158.15 146.66 154.19 151.21 144.11 148.40 2Q 2Q 3Q 4Q 1Q FY25 1Q FY24 2Q 2Q 3Q 4Q 1Q FY25 1Q FY24 2Q 4.2 3.8 3.3 3.7 4.5 4.5 1.7 2.1 1.8 3.0 3.1 3.0 5.1 4.7 6.0 6.7 3.8 6.0 Life
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| November 4, 2025 | © Yokogawa Electric Corporation 20.7 63.8 39.7 99.0 35.8 16.4 2.7 (12.5) (28.6) (11.4) 37.1 66.5 27.3 70.4 24.4 Operating CF Investment CF Free CF （Billion ¥） Trend of Cash Flow 12 *Impact from the sale of large-scale investment securities. * * FY24 FY25 1HFY23 FY24 1HFY23 1H
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| November 4, 2025 | © Yokogawa Electric Corporation FY25 Forecast (change from May 7, 2025) 13 *The Company has resolved to acquire its own shares (acquisition period: March 5, 2025 to December 31, 2025). “EPS (yen)” in the FY25 forecast does not consider the impact of the acquisition of own shares after April 2025. Therefore, it may change depending on the status of the future acquisition of own shares. For information on the acquisition of own shares, please refer to page 18. FY24 (A) FY25 forecast 5/7 (B) FY25 forecast 11/4 (C) Forecast difference (C-B) Difference (C-A) Growth rate (C/A-1) Orders 598.6 580.0 597.0 +17.0 (1.6) (0.3%) Sales 562.4 560.0 577.0 +17.0 +14.6 +2.6% Operating income 83.5 80.0 83.0 +3.0 (0.5) (0.6%) ROS(%) 14.9 14.3 14.4 +0.1pt (0.5pt) － Ordinary income 85.4 80.0 83.0 +3.0 (2.4) (2.8%) Profit before income taxes 78.5 80.0 81.0 +1.0 +2.5 +3.1% Tax, etc. 26.4 27.5 26.5 (1.0) +0.1 +0.4% Profit attributable to owners of parent 52.1 52.5 54.5 +2.0 +2.4 +4.6% EPS(￥) 200.41 202.81 213.56 +10.75 +13.15 － Exchange rate US$ 1= ¥152.55 ¥140.00 ¥145.00 +5.00 (7.55) － （Billion ¥） ◆Revision to exchange rate（US$1: ¥140 → ¥145）
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| November 4, 2025 | © Yokogawa Electric Corporation 14 FY25 forecast operating income FY24 operating Income FY25 forecast operating income (excluding impact of exchange rates) Factors Accounting for Increase/Decrease in FY25 Operating Income (change from May 7, 2025) （Billion ¥） Increase in gross profit from higher sales (excluding the impact of exchange rates) Lower gross margin Increase in SG&A Mainly due to increase in labor costs (6.7) 83.5 83.0 (7.8) 90.8 +15.0 (1.1) 5/7 forecast (▲10.8) Exchange rates FY24 FY25 US$ 152.55 145.00 EUR 163.59 165.00 （¥）
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| November 4, 2025 | © Yokogawa Electric Corporation FY24 FY25 forecast 5/7 FY25 Revised forecast 11/4 FY24 FY25 forecast 5/7 FY25 Revised forecast 11/4 FY25 Forecast for Orders, Sales and Operating Income by Segment (change from May 7, 2025) 15 Orders Sales Operating income Control Measuring instruments New businesses and others （Billion ¥） Difference FY24 FY25 forecast 5/7 FY25 Revised forecast 11/4 Difference Difference 564.3 544.5 561.5 30.3 31.5 31.5 4.0 4.0 4.0 598.6 580.0 597.0 528.3 525.0 542.0 29.9 31.0 31.04.2 4.0 4.0562.4 560.0 577.0 77.6 74.0 77.0 6.2 6.5 6.5 (0.3) (0.5) (0.5) 83.5 80.0 83.0 +17.0 - - +17.0 +17.0 - - +17.0 +3.0 - +3.0 -
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| November 4, 2025 | © Yokogawa Electric Corporation Orders FY24 (A) FY25 (B) Difference （B-A） Sales FY24 (A) FY25 (B) Difference （B-A） Japan 138.8 147.0 +8.2 Japan 135.5 141.5 +6.0 Asia 165.7 164.0 (1.7) Asia 173.5 161.5 (12.0) （Southeast Asia, Far East) 79.2 78.0 (1.2) （Southeast Asia, Far East) 81.0 79.5 (1.5) （China） 57.1 56.5 (0.6) （China） 64.0 55.5 (8.5) （India） 29.4 29.5 +0.1 （India） 28.4 26.5 (1.9) Europe and CIS 60.6 61.5 +0.9 Europe and CIS 52.6 55.0 +2.4 Middle East and Africa 131.3 118.5 (12.8) Middle East and Africa 96.8 117.0 +20.2 North America 49.7 52.0 +2.3 North America 50.4 49.0 (1.4) Central and South America 18.2 18.5 +0.3 Central and South America 19.4 18.0 (1.4) Outside Japan 425.5 414.5 (11.0) Outside Japan 392.8 400.5 +7.7 Consolidated 564.3 561.5 (2.8) Consolidated 528.3 542.0 +13.7 Exchange rate US$1＝ ¥152.55 ¥145.00 (7.55) Exchange rate US$1＝ ¥152.55 ¥145.00 (7.55) FY25 Forecast for Control Orders and Sales by Region (change from May 7, 2025) 16 （Billion ¥）
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| November 4, 2025 | © Yokogawa Electric Corporation 317.9 298.5 318.5 200.1 199.5 195.0 46.2 46.5 48.0 564.3 544.5 561.5 FY24 FY25 forecast 5/7 FY25 Revised forecast 11/4 17 Life Materials Energy & Sustainability （Billion ¥） SalesOrders Exchange rate (US$1/¥) FY25 Forecast for Orders and Sales by Control Subsegment (change from May 7, 2025) Difference 152.55 140.00 145.00 Difference Life Materials Energy & Sustainability 280.0 285.0 297.0 201.2 193.5 197.0 47.2 46.5 48.0 528.3 525.0 542.0 FY24 FY25 forecast 5/7 FY25 Revised forecast 11/4 Exchange rate (US$1/¥) 152.55 140.00 145.00 +17.0 +1.5 (4.5) +20.0 +17.0 +1.5 +3.5 +12.0
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| November 4, 2025 | © Yokogawa Electric Corporation 45.9% 36.7% 53.8% 21.9% 25.9% 37.4% 30.0% 61.8% 47.2% 42.6% 23.3% 17.0% 28.9% 30.0% 12.5 12.5 15 15 17 17 17 17 17 29 3212.5 12.5 15 17 17 17 17 17 23 29 32 25 25 30 32 34 34 34 34 40 58 64 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 forecast Total payout ratio Payout ratio Year-end dividend Interim dividend Dividend （円） 18 ※ ◆ The decision has been made to pay a ¥32 interim dividend per share. （FY25 Dividend forecasts: <No change>） ◆ We are currently repurchasing our common shares through market purchases, with an upper limit of ¥20 billion. (Acquisition period: March 5, 2025 – End of December 2025) ※ ※ *Including return from the acquisition of treasury shares. FY2025 performance may vary depending on the status of future treasury stock acquisitions.
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| November 4, 2025 | © Yokogawa Electric Corporation | November 4, 2025 | © Yokogawa Electric Corporation Financial Appendix: ・Quarterly Financial Results ・Non-operating / Extraordinary Income and Expenses ・Order Backlog Trend by Segment ・Order Backlog Trend by Control Subsegment ・Control Segment Order Trend by Project Size ・Trend of R&D Expenses, Depreciation, and CAPEX ・Trend of Balance Sheet ・Trend of Stock Price 19
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| November 4, 2025 | © Yokogawa Electric Corporation Appendix: Quarterly Financial Results 20 Quarterly average rate (US$/1¥) （Billion ¥） 138.3 127.8 124.6 151.3 157.0 134.0 150.3 157.4 149.1 151.4 118.6 135.9 138.6 147.1 128.9 137.7 142.3 153.5 130.2 151.8 13.1 20.6 24.7 20.4 14.8 21.5 22.1 25.1 16.2 22.8 Orders Sales Operating income 139.63 145.58 146.14 149.88 158.15 146.66 154.19 1Q FY23 2Q 3Q 4Q 1Q FY24 2Q 3Q 4Q 151.21 144.11 FY25 1Q 2Q 148.40
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| November 4, 2025 | © Yokogawa Electric Corporation FY24 1H FY25 1H Operating income 36.3 39.0 Non-operating income 3.6 3.4 Non-operating expenses 4.0 2.7 Ordinary income 35.9 39.7 Extraordinary income 3.0 0.4 Extraordinary expenses 2.0 2.2 Income before tax 37.0 37.9 Tax, etc. 10.3 6.9 Profit attributable to non-controlling interests 2.1 1.6 Profit attributable to owners of parent 24.6 29.4 Appendix: Non-operating / Extraordinary Income and Expenses 21 (Effective tax rate) 27.8％ 18.3％ （Billion ¥） 【Extraordinary gain】 FY24 1H： Gain on sale of fixed assets 2.9
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| November 4, 2025 | © Yokogawa Electric Corporation 105.3 110.3 107.8 111.8 288.5 294.4 315.7 333.1 4.2 5.5 4.4 5.50.2 0.6 0.2 0.5 398.2 410.8 428.2 450.9 FY23 4Q FY24 2Q FY24 4Q FY25 2Q Control (Japan) Control (Outside of Japan) Measuring Instruments New Businesses and Others 22 +22.7 +0.3 +1.1 +17.4 +3.9 Appendix: Order Backlog Trend by Segment （Billion ¥） Exchange rate at the end of each period US$1/¥ 151.41 142.73 149.52 148.88
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| November 4, 2025 | © Yokogawa Electric Corporation 105.4 110.3 107.9 111.8 286.3 305.3 319.9 333.1 4.2 5.6 4.5 5.50.2 0.6 0.2 0.5 396.0 421.8 432.5 450.9 FY23 4Q FY24 2Q FY24 4Q FY25 2Q Control (Japan) Control (Outside of Japan) Measuring Instruments New Businesses and Others +18.4 +0.3 +1.0 +13.2 +3.9 23 148.88 148.88 148.88 148.88 （Billion ¥） Appendix: Order Backlog Trend by Segment (using exchange rate at end of FY25 2Q) Exchange rate at end of FY25 2Q US$1/¥ Products: (1.2) Projects, etc.: +18.3 +17.1
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| November 4, 2025 | © Yokogawa Electric Corporation 24 Life Materials Energy & Sustainability @ exchange rate at end of each period @ exchange rate at end of FY25 2Q Life Materials Energy & Sustainability +17.1 +2.3 (6.0) +20.8 151.41 142.73 149.52 148.88 148.88 148.88 148.88 148.88 +21.3 +2.7 (4.7) +23.3 Exchange rate at end of each period US$1/¥ Exchange rate at end of FY25 2Q US$1/¥ （Billion ¥） Appendix: Order Backlog Trend by Control Subsegment 257.0 274.3 293.2 316.5 112.1 106.4 107.9 103.224.7 24.0 22.5 25.2393.8 404.7 423.6 444.9 FY23 4Q FY24 2Q FY24 4Q FY25 2Q 255.2 282.8 295.8 316.5 111.7 108.4 109.2 103.224.7 24.4 22.9 25.2391.6 415.6 427.8 444.9 FY23 4Q FY24 2Q FY24 4Q FY25 2Q
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| November 4, 2025 | © Yokogawa Electric Corporation 76.1 79.7 78.8 94.3 88.2 91.5 101.9 109.5 124.9 121.7 130.5 108.3 130.6 120.9 116.5 144.4 147.7 125.5 141.7 149.4 139.3 142.4 0 20 40 60 80 100 120 140 160 1Q 2Q 3Q 4Q 1Q 2Q 3Q 4Q 1Q 2Q 3Q 4Q 1Q 2Q 3Q 4Q 1Q 2Q 3Q 4Q 1Q 2Q FY20 FY21 FY22 FY23 FY24 FY25 Appendix: Control Segment Order Trend by Project Size 25 (Billion ¥） Large orders ( ¥ 300 million or larger) make up 15 - 20% of the control segment's revenue. ＊ 3MUS$ Base orders*1 Large orders*2 *1 Base orders：Less than ¥300M/US$3M. Mainly OPEX business such as MRO and system upgrades *2 Large orders：More than ¥300M/US$3M. Mainly CAPEX business such as installation of a system 1Q 2Q 3Q 4Q 1Q 2Q 3Q 4Q 1Q 2Q 3Q 4Q 1Q 2Q 3Q 4Q 1Q 2Q 3Q 4Q 1Q 2Q US$ 107.52 105.25 104.10 107.15 109.43 110.44 114.11 117.79 131.25 139.35 140.43 133.44 139.63 145.58 146.14 149.88 158.15 146.66 154.19 151.21 144.11 148.40 FY25FY24FY20 FY21 FY22 FY23
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| November 4, 2025 | © Yokogawa Electric Corporation 26.6 26.2 27.6 27.5 28.5 30.5 32.4 16.9 32.1 16.2 6.5% 6.5% 6.8% 7.3% 7.3% 6.7% 6.0% 6.3% 5.7% 5.8% 18.3 17.7 18.8 17.6 17.9 19.7 22.6 11.1 22.9 12.3 4.5% 4.4% 4.6% 4.7% 4.6% 4.3% 4.2% 4.2% 4.1% 4.4% 13.2 15.0 19.6 20.6 21.7 22.2 27.4 14.0 33.1 12.2 3.2% 3.7% 4.9% 5.5% 5.6% 4.9% 5.1% 5.3% 5.9% 4.3% CAPEX (% of sales) R&D expenses (% of sales) Depreciation (% of sales) FY19 FY251HFY24FY22 FY23FY17 FY18 FY20 FY21 FY241H 0.0 10.0 20.0 30.0 40.0 R&D Depreciation CAPEX Appendix: Trend of R&D Expenses, Depreciation, and CAPEX 26 FY17 FY18 FY19 FY20 FY21 FY22 FY23 FY24 * *The Group’s consolidated subsidiaries outside Japan have adopted IFRS 16 (Leases) from FY19. （Billion ¥） FY25 1HFY24 1H
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| November 4, 2025 | © Yokogawa Electric Corporation Appendix: Trend of Balance Sheet 27 Assets Liabilities and equity ¥142.73 ¥148.88¥151.41 ¥149.52 （Billion ¥） Exchange rate at end of each period $/¥ Cash & time deposits Notes/accounts receivable Inventories Other current assets Fixed assets Investments Interest-bearing dept Other liabilities Paid in capital Capital surplus Retained earnings Minority interests Exchange rate at end of each period $/¥ 82.9 79.4 81.2 86.1 134.8 137.1 140.8 140.9 17.9 17.1 18.1 20.654.7 55.5 50.9 53.2 242.7 221.5 238.5 237.3 139.9 151.7 188.8 186.2 672.9 662.3 718.3 724.3 FY23 FY24 1H FY24 FY25 1H 8.1 9.6 7.9 9.1 338.8 347.1 369.9 386.0 54.5 54.6 54.6 54.643.4 43.4 43.4 43.4 203.8 183.5 218.2 207.1 24.3 24.1 24.4 24.1672.9 662.3 718.3 724.3 FY23 FY24 1H FY24 FY25 1H ¥142.73 ¥148.88¥151.41 ¥149.52
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| November 4, 2025 | © Yokogawa Electric Corporation 28 Appendix: Trend of Stock Price （￥） 800 1,300 1,800 2,300 2,800 3,300 3,800 4,300 4,800 18/3 19/3 20/3 21/3 22/3 23/3 24/3 25/3 YOKOGAWA TOPIX 18/3 19/3 20/3 21/3 22/3 23/3 24/3 24/6 24/9 24/12 25/3 25/6 25/9 25/10/24 YOKOGAWA 2,198 2,291 1,303 2,038 2,099 2,150 3,494 3,890 3,655 3,398 2,893 3,855 4,255 4,586 TOPIX 1,716 1,592 1,403 1,954 1,946 2,004 2,769 2,810 2,646 2,785 2,659 2,853 3,138 3,269
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| November 4, 2025 | © Yokogawa Electric Corporation Kunimasa Shigeno Director, President & CEO, Representative Executive Officer November 4, 2025 Financial Results for 1st Half of Fiscal Year 2025 Towards the Achievement of the Growth for Sustainability 2028 Medium-term Business Plan
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| November 4, 2025 | © Yokogawa Electric Corporation Current Situation in Key Markets
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| November 4, 2025 | © Yokogawa Electric Corporation Business Environment Overseas sales % FY24-1H 75.3% FY25-1H 73.7% •Economic stagnation caused by U.S. tariff policies •Unstable international situation •Rapid fluctuations in exchange rates Risk Middle East Africa Japan Southeast Asia Far East Europe CIS North America India China Central and South America Industry Region Middle East: Investment appetite remains strong, with high demand for AI, cybersecurity, and other DX solutions as well as labor-saving technologies. India: Infrastructure investment is active, but competition remains intense. North America: Although a recovery is underway, rising material and labor costs are a concern. China: Economic stagnation persists, with ongoing instability. Europe & Southeast Asia: Stable performance continues, with growing expectations for investment in CCS/CCUS. Japan: Safety and security remain key priorities, and investments aimed at improving productivity continue at a steady level. Upstream/downstream: Mid- to long-term gas demand is driving investment, with active DX-related spending and increasing inquiries linked to CCS/CCUS. Renewable: In Europe, initiatives remain active, with nuclear power regaining attention as a base load source, while investments in conventional power generation continue. Water: Long-term water demand remains strong, with increasing investment in seawater desalination, integrated water management, and water recycling initiatives. Chemical: As the high-performance chemical market expands, investments in materials for AI data centers, automotive semiconductors, and batteries are steadily increasing. Mining: Demand for copper and rare metals remains strong. While phosphate demand continues to grow due to food needs, EV-related demand shows signs of stagnation. Pharma, food & beverages: The biopharmaceutical market is expanding, with increasing inquiries for solutions that ensure data integrity. Food demand continues to rise. Robust energy demand continues to drive strong investment appetite among customers. While uncertainty stemming from U.S. tariff policies has partially eased, multiple risk factors remain.
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| November 4, 2025 | © Yokogawa Electric Corporation Progress of
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| November 4, 2025 | © Yokogawa Electric Corporation ◼ Green Riyadh is a national initiative led by the Government of Saudi Arabia. ◼ Its objective is to transform Riyadh into one of the world’s most livable cities through urban greening. Yokogawa to deliver integrated control systems for urban infrastructure in Green Riyadh project Riyadh, Saudi Arabia* Saudi Vision 2030 – Green Riyadh project https://www.vision2030.gov.sa/en/explore/projects/green-riyadh Providing value as a trusted partner in the system of systems domain ◼ The project will plant 7.5 million trees across parks, public facilities, healthcare centers, and roads by 2030. This afforestation will contribute to environmental, economic, and social sustainability by improving air quality, reducing urban temperatures, decreasing power consumption, and promoting healthier and more vibrant lifestyles for residents. ◼ Yokogawa will support the success of the project by providing integrated monitoring and control systems for the urban infrastructure. GS2028 Basic strategy:
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| November 4, 2025 | © Yokogawa Electric Corporation Acquired Intellisync and WiSNAM to strengthen cybersecurity and grid management solutions ・Cybersecurity ・DX solutions ・Advanced grid control ・Energy management solutions Renewable energy monitoring solutions Intellisync WiSNAM ⚫ Yokogawa can offer end-to-end solutions that bridge IT and OT in energy management. ⚫ It also strengthens software‐as-a-service (SaaS) and recurring revenue portfolio. To be integrated into BaxEnergy Acquired in Oct 2025 To be integrated into BaxEnergy Acquired in Oct 2025 Acquired in Jun 2024 The remote operation center of BaxEnergy Italia in Sicily GS2028 Basic strategy: Strengthen industry responsiveness （Renewable Energy）
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| November 4, 2025 | © Yokogawa Electric Corporation Points That Yokogawa Needs to Strengthen Contributing to our customers' growth and profits, and earning their trust ⚫ Thoroughly strengthening front-line sales functions and increasing the number of proposal-capable personnel ⚫ Getting closer to our customers, viewing the market and business from their perspective, and becoming a trusted partner Clarifying the roles of the head and regional offices, and implementing transnational operations ⚫ Placing CoEs* in the hottest markets to quickly plan and develop solutions ⚫ The head office should handle core product planning and development, and support global solution deployment and governance. Thoroughly strengthening product competitiveness and further enhancing the solutions portfolio ⚫ Thoroughly strengthening competitiveness by accelerating investment in existing product lines ⚫ Through the CoE system, thoroughly strengthening the solution portfolio from the customers' perspective Fostering a corporate culture that encourages people to take on challenges ⚫ Supporting and recognizing individuals and organizations that, rather than setting easily achievable goals, pursue high goals that truly add value for customers and stakeholders Point to be strengthened 1 Point to be strengthened 2 Point to be strengthened 3 Point to be strengthened 4 *Center of Excellence (CoE): An organization that consolidates people and expertise to drive projects forward Execution First.
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| November 4, 2025 | © Yokogawa Electric Corporation Trusted Partner: Collaboration with SEG SEG: Sinopec Engineering Group EPC: Engineering, Procurement and Construction Yokogawa and Sinopec Engineering Group sign Memorandum of Cooperation on global EPC projects ◼ SEG and Yokogawa China have already worked together on numerous refining and ethylene projects within China. ◼ The MoC provides a framework for both companies to focus on in-depth collaboration in contracting EPC projects internationally. ◼ Expected that both companies will greatly benefit from the enhanced cooperation under the MoC, particularly in terms of industrial automation advancements and geographical coverage. ◼ SEG is an engineering company of the Sinopec Group and designs and builds oil refineries and petrochemical plants both inside and outside the People's Republic of China. ◼ Yokogawa will provide its control and safety systems, as well as related services for projects in China and abroad. Point to be strengthened 1
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| November 4, 2025 | © Yokogawa Electric Corporation AI CoE: FKDPP deployment in Middle East ◼ Utilizes Yokogawa’s reinforcement learning-based AI algorithm FKDPP* ◼ Groundbreaking deployment of multiple, coordinated FKDPP AI agents to successfully optimize a gas treatment unit at the Fadhili Gas Plant, reducing energy and chemical use ◼ Initial results demonstrate a 10% to 15% reduction in amine and steam usage, around 5% reduction in power usage, improved process stability, and a significant decrease in operator manual intervention. (Implementation is currently undergoing a detailed evaluation) Fadhili Gas Plant (Courtesy of Aramco) Aramco and Yokogawa achieve a major milestone with commissioning of multiple autonomous control AI agents at major gas facility *FKDPP: Factorial Kernel Dynamic Policy Programming, an algorithm jointly developed by Yokogawa Electric Corporation and the Nara Institute of Science and Technology Point to be strengthened 2
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| November 4, 2025 | © Yokogawa Electric Corporation Thoroughly strengthening product competitiveness ◼ CENTUM 50th Anniversary ◼ Launch of CENTUM VP R7 Evolving CENTUM into a next-generation AI- era platform that can learn and adapt to changes and sustain optimal, safe, and secure plant operations without human intervention ◼ Yokogawa Test & Measurement's Top Two Products Thrive Amid AI Data Center Boom Our high-precision instruments are widely used in developing, testing, and producing optical and power devices, demand for which is being driven by soaring AI data center demand. Optical spectrum analyzer Power analyzer Point to be strengthened 3
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| November 4, 2025 | © Yokogawa Electric Corporation Yokogawa’s Purpose Measuring represents Yokogawa’s origin as a company. We measure things, grasp and analyze their state, and add value through the information that is derived. Connecting refers to how Yokogawa not only combines valuable information, but also builds trusted relationships with customers in various industries and brings together businesses and industries, giving resonance to the value that we create. Our ability to measure and connect is a core competence that Yokogawa must never lose. We wish to use this strength to find solutions to various social issues and create a future where humanity and planet Earth can co- exist in symbiotic harmony. This aspiration is expressed in our commitment to fulfill our responsibilities for the future of our planet. Utilizing our ability to measure and connect, we fulfill our responsibilities for the future of our planet.
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| November 4, 2025 | © Yokogawa Electric Corporation | November 4, 2025 | © Yokogawa Electric Corporation Reference: ・FY25 1H News ・Yokogawa’s Main ESG Indexes etc. 40
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| November 4, 2025 | © Yokogawa Electric Corporation Sep. Yokogawa Signs Agreements with Toyota for the R&D of the Control Platform for a Manned Pressurized Rover - Addressing the challenges of continuous lunar exploration - Oct. Yokogawa to Deliver Integrated Control Systems for Urban Infrastructure in Green Riyadh Project - Contributing to a national urban afforestation initiative that aims to transform the Saudi capital into one of the world's most livable cities - Apr. Yokogawa to Acquire Web Synergies, a Provider of IT and Integrated IT/OT Solutions Jun. Jinggong Group and Yokogawa Sign Multi-Faceted Strategic Partnership on Mutual Business Development Oct. Yokogawa and Sinopec Engineering Group Sign Memorandum of Cooperation on Global EPC Projects Yokogawa Acquires Intellisync and WiSNAM, Strengthening Cybersecurity and Grid Management Solutions - Creating a digital hub for renewable energy and decarbonization- Reference: FY25 Topics (Alliances･Acquisitions / Projects / R&D) Alliances･Acquisitions Based on press release date For more information, see https://www.yokogawa.com/news/ Projects 41 Sep. Yokogawa and Kyoto Brewer Craft Bank Successfully Test Optimization of Fermentation Process with AI-Guided Temperature Setting Schedule R&D
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| November 4, 2025 | © Yokogawa Electric Corporation May Yokogawa Test & Measurement Releases SL2000 High-Speed Data Acquisition Unit Jun. Yokogawa Announces Release of Next-Generation of the CENTUM VP Integrated Production Control System - Celebrating the 50th Anniversary of the announcement of the world's first distributed control system, CENTUM continues to shine in the areas of safety, security, and sustainable autonomous operations - Yokogawa Collaborates with Shell on Robotics and AI Technology for Plant Maintenance - Streamlining operations and reducing risk in asset integrity management - Aug. Yokogawa AI-powered Solution Drastically Cuts Planning Time for Loading Operations - Expert-level decision making considers constraints on loading operations and the burden on delivery personnel - Oct. Aramco and Yokogawa Achieve a Major Milestone with Commissioning of Multiple Autonomous Control AI Agents at Major Gas Facility - Groundbreaking deployment successfully optimizes gas treatment unit, reducing energy and chemical use - Products･Solutions Reference: FY25 Topics (Products･Solutions / Others) Based on press release date For more information, see https://www.yokogawa.com/news/ 42 Apr. Yokogawa Formulates AI Policy and Group AI Governance Code Jun. Yokogawa Celebrates the 50th Anniversary of the CENTUM Distributed Control Systems: A Pioneering Achievement Sep. Yokogawa Establishes Trusted Green Sustainability Guiding Principles Covering the Product Lifecycle Oct. Published 2025 Yokogawa Report and 2025 Yokogawa Sustainability Report Others
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| November 4, 2025 | © Yokogawa Electric Corporation 43 Reference: Yokogawa’s Main ESG Indexes, etc. As of October 2025Dow Jones Best-in-Class Asia Pacific Index FTSE4Good Index Series FTSE Blossom Japan Index FTSE Blossom Japan Sector Relative Index MSCI ESG Ratings AAA MSCI Selection Indexes MSCI Japan ESG Select Leaders Index MSCI Japan Empowering Women Index ISS ESG - ESG Corporate Rating Prime status Sustainalytics Top-Rated ESG Regional Performer CDP Climate Change/Water Security A List CDP Supplier Engagement Leader SNAM Sustainability Index S&P/JPX Carbon Efficient Index EcoVadis Gold Rating for Sustainability Morningstar Japan ex-REIT Gender Diversity Tilt Index Please visit our website for more details about ESG indexes and evaluations from outside the company. https://www.yokogawa.com/about/ir/
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| November 4, 2025 | © Yokogawa Electric Corporation Disclaimer 44 The information pertaining to our business plans and forecasts that has been provided in this presentation and at analyst meetings contains forward-looking statements that are based on our management’s current knowledge and require the making of assumptions about future events. As such, it cannot be guaranteed that these statements will not differ materially from actual results. Yokogawa undertakes no obligation to publicly update or revise any forward-looking statements after the issue of this document except as provided for in laws and ordinances. The copyright to all materials in this document is held by Yokogawa Electric Corporation. No part of this document may be reproduced or distributed without the prior permission of the copyright holder. The information has not been restated to reflect the revision of the initially allocated acquired costs that was decided upon finalization of the tentative accounting treatment. IR Department Yokogawa Electric Corporation Email: Yokogawa_Electric_IR6841@cs.jp.yokogawa.com Phone: +81-422-52-6845 URL: https://www.yokogawa.com/about/ir/
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The names of corporations, organizations, products and logos herein are either registered trademarks or trademarks of Yokogawa Electric Corporation and their respective holders. | November 4, 2025 | © Yokogawa Electric Corporation 45