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I MIRAIT ONE Supplementary Financial Information For the Three Months ended June 30 , 2026 August 7 , 2026 MIRAIT ONE Corporation
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• Orders received decreased slightly year-on-year, with large-scale orders including data centers expected for the full year. - Affected by the impact of large-scale orders secured in the previous year within the Environmental & social innovation business (Construction/Renovation field). • Q1 performance achieved growth in both revenue and profit, with net sales and gross profit reaching record highs. - Net sales growth was driven by the ICT solution business and NTT business. - Gross profit margin improved by 1.3 percentage points year-on-year to 14.2%. • Operating income was 2.8 billion yen (an increase of 1.8 billion yen year-on-year), with the full-year progress rate also improving year-on-year. - Although SG&A increased year-on-year, the SG&A ratio declined, reflecting a focus on operational efficiency. • As a result, ordinary income was 3.3 billion yen and profit attributable to owners of parent was 1.9 billion yen (an increase of 3.2 billion yen year-on-year). １．Summary 1
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FYE March 2026 Full-year Results Progress Full-year Forecast Progress Amount (b) – (a) % (b)／(a) (c) (a) /(c) (d) (b)／(d) Orders received 164.6 162.5 -2.1 -1.3% 658.7 25.0% 720.0 22.6% Net sales 121.4 130.0 +8.6 +7.1% 602.4 20.2% 660.0 19.7% Gross profit 15.7 18.4 +2.7 93.0 103.0 (Gross profit margin) (12.9%) (14.2%) (+1.3p) (15.4%) (15.6%) SG&A 14.7 15.6 +0.9 58.7 63.0 (SG&A ratio) (12.1%) (12.0%) (-0.1p) (9.7%) (9.5%) EBITDA 4.5 6.5 +2.0 48.5 55.0 (EBITDA ratio) (3.7%) (5.0%) (+1.3p) (8.1%) (8.3%) Operating income 1.0 2.8 +1.8 34.3 40.0 (Operating income ratio) (0.8%) (2.2%) (+1.4p) (5.7%) (6.1%) Ordinary income 1.3 3.3 +2.0 36.5 40.0 (Ordinary income ratio) (1.1%) (2.5%) (+1.4p) (6.1%) (6.1%) -1.3 1.9 +3.2 23.3 25.5 (－) (1.5%) (－) (3.9%) (3.9%) 347.3 392.8 +45.5 +13.1% 360.4 ― ― ― Units: bil. Yen FYE March 2027 FYE March 2026 FYE March 2027 Q1 actual results (a) Q1 actual results (b) YoY Change +44.4% 9.3% 11.8% +180.0% 2.9% 7.0% +17.2% 16.9% 17.9% +6.1% 25.0% 24.8% +153.8% 3.6% 8.3% ― ― 7.5% Profit attributable to owners of parent (Profit margin) Construction account carried forward ※1 ２．Financial Results 2 ２．Financial Results ※1 EBITDA ： Operating income + Depreciation and amortization + goodwill amortization
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３．Orders Received, Net Sales by business segment 3 ※1 We are working on growth fields that we should focus on in the future ( ①Urban and regional development, corporate DX and GX business, ②Green energy business, ③Software business, and ④Global business ) as "MIRAI (future) domains."" Similarly, HVAC and electrical work related to the data center business—another of our growth fields—are also included in the "MIRAI domains" (past data has been retrospectively adjusted). FYE March 2026 Full-year Results Progress Full-year Forecast Progress Amount (b) – (a) % (b)／(a) (c) (a) /(c) (d) (b)／(d) 102.1 96.1 -6.0 -5.9% 405.9 25.2% 470.0 20.4% 61.7 45.4 -16.3 -26.4% 220.9 27.9% 282.0 16.1% ICT solution business 40.4 50.7 +10.3 +25.5% 185.0 21.8% 188.0 27.0% 62.5 66.4 +3.9 +6.2% 252.8 24.7% 250.0 26.6% NTT business 51.1 56.8 +5.7 +11.2% 216.2 23.6% 216.0 26.3% Multi-carrier business 11.4 9.6 -1.8 -15.8% 36.6 31.1% 34.0 28.2% 164.6 162.5 -2.1 -1.3% 658.7 25.0% 720.0 22.6% FYE March 2026 Full-year Results Progress Full-year Forecast Progress Amount (b) – (a) % (b)／(a) (c) (a) /(c) (d) (b)／(d) 70.9 75.1 +4.2 +5.9% 367.2 19.3% 415.0 18.1% 40.6 37.8 -2.8 -6.9% 193.3 21.0% 234.0 16.2% ICT solution business 30.3 37.3 +7.0 +23.1% 173.9 17.4% 181.0 20.6% 50.5 54.9 +4.4 +8.7% 235.2 21.5% 245.0 22.4% NTT business 43.2 46.9 +3.7 +8.6% 197.9 21.8% 210.0 22.3% Multi-carrier business 7.3 8.0 +0.7 +9.6% 37.3 19.6% 35.0 22.9% 121.4 130.0 +8.6 +7.1% 602.4 20.2% 660.0 19.7% FYE March 2027 Q1 actual results FYE March 2026 Full-year Results FYE March 2027 Full-year Forecast MIRAI domains composition ratio ４２％ ４５％ ４１％ ４５％ Total FYE March 2026 Q1 actual results Net sales Units:bil. Yen FYE March 2027 FYE March 2026 FYE March 2027 YoY ChangeQ1 actual results (a) Q1 actual results (b) FYE March 2027 Q1 actual results FYE March 2026 Full-year Results FYE March 2027 Full-year Forecast MIRAI domains composition ratio ４７％ ４６％ ４４％ ４９％ Total FYE March 2026 Q1 actual results Orders received Units:bil. Yen FYE March 2027 FYE March 2026 Q1 actual results (a) Q1 actual results (b) FYE March 2027 YoY Change Corporate/Environmental and social infrastructure domain Environmental & social innovation business Telecommunications infrastructure domain Orders received (MIRAI (future) domains) ％ Net sales (MIRAI (future) domains) ％ Corporate/Environmental and social infrastructure domain Environmental & social innovation business Telecommunications infrastructure domain ※1 ３．Orders Received, Net Sales by business segment
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５．Gross profit by business segment ４．Construction account carried forward by business segment 4 We have released on our website the ”Action to implement management that is conscious of cost of capital and stock price", as requested by the Tokyo Stock Exchange. ( https://ir.mirait-one.com/en/realizing/index.html ) FYE March 2026 Amount (b) – (a) % (b)／(a) 250.1 278.5 +28.4 +11.4% 185.9 199.9 +14.0 +7.5% ICT solution business 64.2 78.6 +14.4 +22.4% 97.2 114.3 +17.1 +17.6% NTT business 69.9 90.3 +20.4 +29.2% Multi-carrier business 27.3 24.0 -3.3 -12.1% 347.3 392.8 +45.5 +13.1% Total Units:bil. Yen FYE March 2027 Q1 actual results (a) Q1 actual results (b) YoY Change Corporate/Environmental and social infrastructure domain Environmental & social innovation business Telecommunications infrastructure domain Construction account carried forward ５．Gross profit by business segment ４．Construction account carried forward by business segment FYE March 2026 Full-year Results Progress Full-year Forecast Progress Amount (b) – (a) % (b)／(a) (c) (a) /(c) (d) (b)／(d) 5.1 5.2 +0.1 31.5 35.0 (12.6%) (13.8%) (+1.2p) (16.3%) (15.0%) 4.1 5.0 +0.9 23.7 28.5 (13.5%) (13.4%) (-0.1p) (13.6%) (15.7%) 6.5 8.2 +1.7 37.8 39.5 (12.9%) (14.9%) (+2.0p) (16.1%) (16.1%) 15.7 18.4 +2.7 93.0 103.0 (12.9%) (14.2%) (+1.3p) (15.4%) (15.6%) FYE March 2026 FYE March 2027 （Gross profit margin） Q1 actual results (a) Q1 actual results (b) YoY Change +26.2% 17.2% 20.8% Units:bil. Yen Total +17.2% 16.9% 17.9% +2.0% 16.2% 14.9% ICT solution business +22.0% 17.3% 17.5% Gross profit FYE March 2027 Environmental & social innovation business Telecommunications infrastructure domain ５．Gross profit by business segment
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Statements and quotes relevant to the forecasted values in this handout are the future prospects based on the plans and prospects of the Company at this point in time. The actual business results could be significantly different from those stated in this handout due to changes in conditions. As such, please be advised that we will not be able to guarantee the accuracy of the forecasted values, in this handout and the session, over the period of time to come in the future. MIRAIT ONE Corporation Precautionary Statement 5