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14 : 254 ppm H2S 0 00 000 LEL CO 0 x SO₂ 209 RIKEN KEIKI POWER AIR MODE GX - 3R Pro CO / H2S LEL O2 TOXIC RIKEN KEIKI Financial Results Briefing for the Three Months Ended June 30 , 2026 P Spaletow < 101 August 2026 RIKEN KEIKI Co. , Ltd. Securities Code : 7734
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2 Management Philosophy We are a pioneer in creating safe working environments for workers. Management Philosophy
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3 1939 1950 1960 1970 1980 1990 2000 2010 2020 ■Net Sales History Established to commercialize optical interferometric combustible gas indicators designed by the Institute of Physical and Chemical Research (RIKEN) 1939 Listed on the Second Section of the Tokyo Stock Exchange 1961 1995 1972 Establishes RIKEN KEIKI NARA MFG. CO., LTD. Listed on the First Section of the Tokyo Stock Exchange Launches fixed-type gas detector head for semiconductor plants “GD-81D Series” 2025 Establishes Riken Keiki Commercial (Shanghai) Co., Ltd. as a subsidiary in China 2009 Makes RKI Instruments, Inc. (USA) a subsidiary Makes RIKEN KEIKI ASIA PACIFIC PTE. LTD. a subsidiary 2017 2018 Launches portable-type gas detector ”GX-3R/GX-3R Pro Series“ 2019 2020 Completes construction of a new Production Center (Kasukabe-shi, Saitama, Japan) 55.2 billion yen FY2025 Sales Opens a new R&D Center (Kasukabe-shi, Saitama, Japan) 2015 Launches multi-point toxic gas detection system “FPM-80A“ 2026
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4 60.9% 36.7% ■ Percentage of sales by device type Providing more than 100 different products to cater to customer needs Fixed-type Surface analysis of electronic materials and gas calorimeters Portable-type For personal safety management and gas leakage point detection, etc. ■Use of our products Contributing to creating safe working environments ● Monitoring of toxic gases Semiconductor, liquid crystal, petroleum refining, petrochemical and chemical plants, etc. ● Prevention of gas explosions Petrochemical plants, LNG/LPG receiving terminals, tankers, printing plants, etc. ● Prevention of oxygen deficiency Sewage treatment plants, manhole work, paper and pulp mills, steel mills, etc. ● Others Surface analysis of electronic materials, substance analysis by X-ray, etc. Our Products (FY2025) 2.5% Other measurement devices Continuous monitoring of gas leaks in equipment and facilities 42.2% ■Percentage of sales by customer industry 29.0% 5.7% ● Shipping 13.2% ● Gas 9.9% ●Petrochemical ● Electrical & Semiconductor ●Others (including machinery, steel, and automobiles) * The total ratio may not amount to 100% due to rounding.
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FINANCIAL RESULTS FY2026 Three Months
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6 Net sales increased by 12.2% YoY, driven by growth in overseas sales, primarily in Asia and North America. The operating profit margin declined by 1.7% points, impacted by higher labor costs and the pricing strategies for new product sales. FY2025 FY2026 4 - 6 results 4 - 6 results YoY Full-year forecast Achievement rate Net sales 13,554 15,203 112.2% 60,000 25.3% Operating profit 2,988 3,083 103.2% 12,700 24.3% Operating profit margin 22.0% 20.3％ - 21.2％ - Ordinary profit 2,971 3,431 115.5% 13,000 26.4% Net profit 2,138 2,415 113.0% 9,600 25.2% Earnings per share -Basic- (yen) 46.55 53.14 114.2% 211.19 25.2% Dividends per share (yen) - - - - - (Millions of yen) Summary of Operating Results
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7 7,689 9,038 10,763 11,490 11,243 13,554 15,203 1,455 2,031 3,428 3,058 2,673 2,988 3,083 0 1,000 2,000 3,000 4,000 0 3,000 6,000 9,000 12,000 15,000 FY2020 (4-6) FY2021 (4-6) FY2022 (4-6) FY2023 (4-6) FY2024 (4-6) FY2025 (4-6) FY2026 (4-6) Operating profit (Millions of yen) Net sales (Millions of yen) Net sales Operating profit Sales increased YoY due to growth in sales to Asia and North America. As mentioned earlier, operating profit remained flat due to the impact of rising labor costs and pricing strategies. Net Sales and Profit/Loss (3 months)
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8 5,179 6,262 7,272 7,714 6,472 8,769 9,088 2,211 2,534 3,227 3,511 4,419 4,486 5,743 299 241 263 265 351 298 371 (67.3%) (69.3%) (67.6%) (67.1%) (57.6%) (64.7 … (59.8%) (28.8%) (28.0%) (30.0%) (30.6%) (39.3%) (33.1%) (37.8%) (3.9%) (2.7%) (2.4%) (2.3%) (3.1%) (2.2%) (2.4%) 7,689 9,038 10,763 11,490 11,243 13,554 15,203 0 3,000 6,000 9,000 12,000 15,000 FY2020 (4-6) FY2021 (4-6) FY2022 (4-6) FY2023 (4-6) FY2024 (4-6) FY2025 (4-6) FY2026 (4-6) Net sales （Millions of yen） Others Portable-type Fixed-type Sales of fixed gas detectors rose slightly, driven by an increase in domestic maintenance projects, even as construction projects moderated. Sales of portable gas detectors increased, supported by sales to a wide range of industries in North America, and the shipping industry. * The total ratio may not amount to 100% due to rounding. Sales by Device Type (3 months)
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9 4,853 6,744 9,082 6,798 7,299 8,369 10,551 1,847 2,709 3,350 4,325 3,595 5,623 8,947 123 288 333 359 455 383 474 (71.1%) (69.2%) (71.1%) (59.2%) (64.3%) (58.2%) (52.7%)(27.1%) (27.8%) (26.2%) (37.7%) (31.7%) (39.1%) (44.9%) (1.8%) (3.0%) (2.6%) (3.1%) (4.0%) (2.7%) (2.4%) 6,823 9,742 12,766 11,483 11,351 14,376 19,933 0 5,000 10,000 15,000 20,000 FY2020 (4-6) FY2021 (4-6) FY2022 (4-6) FY2023 (4-6) FY2024 (4-6) FY2025 (4-6) FY2026 (4-6) Orders (Millions of yen) Others Portable-type Fixed-type Orders for fixed gas detectors increased due to a rise in product and maintenance projects within the domestic semiconductor industry, as well as growth in orders from the Chinese semiconductor industry. Orders for portable gas detectors increased significantly due to growth in the shipping industry following the revision of the International Convention for the Safety of Life at Sea (SOLAS) * The total ratio may not amount to 100% due to rounding. Orders by Device Type (3 months)
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10 1,278 1,562 2,491 3,156 2,663 3,119 4,165 968 1,020 1,195 1,605 2,080 2,479 2,712 140 234 287 400 458 488 647 31 89 88 131 45 76 112 (16.6%) (17.3%) (23.1%) (27.5%) (23.7%) (23.0%) (27.4%)(12.6%) (11.3%) (11.1%) (14.0%) (18.5%) (18.3%) (17.8%) (1.8%) (2.6%) (2.7%) (3.5%) (4.1%) (3.6%) (4.3%) (0.4%) (1.0%) (0.8%) (1.1%) (0.4%) (0.6%) (0.7%) 2,418 2,906 4,062 5,293 5,247 6,164 7,637 31.4% 32.2% 37.7% 46.1% 46.7% 45.5% 50.2% 0% 10% 20% 30% 40% 50% 0 2,000 4,000 6,000 8,000 FY2020 (4-6) FY2021 (4-6) FY2022 (4-6) FY2023 (4-6) FY2024 (4-6) FY2025 (4-6) FY2026 (4-6) Ratio on salesSales by region (Millions of yen) Others Europe North America Asia Ratio on sales Sales in Asia increased due to higher sales to the semiconductor industry in China and Taiwan. Sales in North America increased YoY driven by sales of portable gas detectors to a wide range of industries. Overseas Sales by Region (3 months) * The total ratio may not amount to 100% due to rounding. * Effective from the fourth quarter of FY2025, we have changed the method used to calculate sales by region. Please note that as a result of this change, the breakdown of sales by region differs from previous periods.
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11 (45.0%) (45.9%) (47.2%) (46.6%) (35.6%) (44.4%) (43.1%) (12.7%) (12.3%) (10.3%) (11.7%) (11.6%) (10.8%) (10.4%) (8.6%) (8.7%) (7.6%) (9.0%) (12.7%) (13.0%) (12.7%) (6.7%) (5.6%) (6.1%) (7.4%) (10.6%) (6.1%) (6.9%) (27.0%) (27.5%) (28.8%) (25.3%) (29.5%) (25.6%) (26.9%) 0 2,000 4,000 6,000 8,000 10,000 12,000 FY2020 (4-6) FY2021 (4-6) FY2022 (4-6) FY2023 (4-6) FY2024 (4-6) FY2025 (4-6) FY2026 (4-6) Sales by customer industry (Millions of yen） Others (government, steel, automobiles, electric power, construction, etc.) Shipping Gas Petrochemical Electrical & Semiconductor As a result of broad-based sales growth across various industries, there were no significant changes in the sales mix by industry YoY * The total ratio may not amount to 100% due to rounding. Sales by Customer Industry (Non-consolidated, 3 months)
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12 3,995 5,093 6,524 6,533 5,845 6,660 7,158 2,814 3,099 3,485 3,654 3,831 4,391 4,889 41.3% 37.8% 34.8% 35.9% 39.6% 39.7% 40.6% 0% 10% 20% 30% 40% 0 2,000 4,000 6,000 8,000 10,000 12,000 FY2020 (4-6) FY2021 (4-6) FY2022 (4-6) FY2023 (4-6) FY2024 (4-6) FY2025 (4-6) FY2026 (4-6) Products (including construction) Maintenance Ratio of MaintenanceNon-consolidated Net Sales (Millions of yen) Ratio of maintenance Product sales increased, driven primarily by the semiconductor industry Although maintenance sales increased in line with the rise in domestic maintenance projects, the ratio of maintenance sales remained flat. Sales Ratio of Products and Maintenance (Non-Consolidated, 3 months)
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13 This document contains forward-looking statements regarding the Company's performance. These statements are based on assumptions and beliefs derived from currently available information. They also involve uncertainties, such as economic trends and market demand. Accordingly, actual results may differ from these statements. This document has been translated from the Japanese original for reference purposes only. In the event of any discrepancy between this translated document and the Japanese original, the original shall prevail. Disclaimer