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Performance for the Second Quarter (the First Half) Ended September 30, 2025 — Supplementary Documents — November 7, 2025 Cautionary Statement with Respect to Forward-Looking Statements Some of the information in this presentation contains forward-looking statements, which are subject to various risks and uncertainties. Therefore, the Company’s actual activities and business results could differ significantly. Important factors bearing on the Company’s actual business results include, but are not limited to, changes in the economic environment in the Company’s business fields, social trends, trends in demand for the services that the Company offers, or downward pressure on prices and fees due to intensifying competition. Factors that may have an effect on the company’s performance are not limited to the above.
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(Unit: ¥100 million) FY March 2025 FY March 2026 (Reference) FY March 2025 1st Half Year 1st Half Year Difference (c) Percentage Full Year Progress Rate Full Year Progress Rate Results Results Difference Targets Results (a) (b) (b)-(a) (c)/(a) (d) (b)/(d) (e) (a)/(e) Orders Received 3,257 3,215 -42 -1.3% 6,500 49.5% 6,388 51.0% Net Sales 2,641 2,703 61 2.3% 6,200 43.6% 6,146 43.0% Gross Profits 348 372 24 6.9% 850 43.9% 842 41.4% (Gross Profit Margin) (13.2%) (13.8%) 0.6 p.p. (13.7%) (13.7%) SG&A Expenses 184 192 8 4.4% 400 48.1% 382 48.2% Operating Profit 164 180 15 9.7% 450 40.1% 459 35.7% (Operating Margin) (6.2%) (6.7%) 0.5 p.p. (7.3%) (7.5%) Ordinary Profit 171 188 16 9.5% 460 40.9% 466 36.9% (Ordinary Profit Margin) (6.5%) (7.0%) 0.5 p.p. (7.4%) (7.6%) Profit Attributable to Owners of Parent 108 126 18 16.7% 310 40.8% 300 36.1% (Net Profit Margin) (4.1%) (4.7%) 0.6 p.p. (5.0%) (4.9%) 1 1. Consolidated Statements of Income (COMSYS.HD Consolidated) For the Six Months Ended September 30, 2025 Notes: 1. Figures are rounded down to the nearest whole unit. Profit margin, percentages of increase and decrease and progress percentage data are calculated using a base unit of yen, and figures are rounded to the nearest first decimal place. 2. p.p. = percentage points
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(Unit: ¥100 million) ◆ Comparisons with the Previous Term Nippon COMSYS-G SANCOM-G TOSYS-G TSUKEN-G Mar. 2025 Mar. 2026 Difference Mar. 2025 Mar. 2026 Difference Mar. 2025 Mar. 2026 Difference Mar. 2025 Mar. 2026 Difference 1H Results 1H Results 1H Results 1H Results 1H Results 1H Results 1H Results 1H Results Orders Received 1,716 1,688 -27 105 160 55 192 214 22 440 338 -101 Net Sales 1,314 1,365 50 195 132 -62 165 175 9 312 293 -18 Gross Profits 167.3 174.6 7.2 18.3 8.1 -10.1 15.8 19.0 3.1 48.2 44.9 -3.2 (Gross Profit Margin) (12.7%) (12.8%) 0.1 p.p. (9.4%) (6.1%) -3.3 p.p. (9.6%) (10.9%) 1.3 p.p. (15.5%) (15.3%) -0.2 p.p. SG&A Expenses 88.6 91.8 3.2 11.8 8.7 -3.1 9.2 10.9 1.6 19.3 19.4 0.0 Operating Profit 78.7 82.7 4.0 6.5 -0.5 -7.0 6.6 8.1 1.4 28.8 25.5 -3.3 (Operating Margin) (6.0%) (6.1%) 0.1 p.p. (3.4%) (-0.4%) -3.8 p.p. (4.0%) (4.6%) 0.6 p.p. (9.2%) (8.7%) -0.5 p.p. Ordinary Profit 82.2 85.4 3.2 6.7 -0.1 -6.9 7.8 9.1 1.3 29.1 25.8 -3.3 (Ordinary Profit Margin) (6.3%) (6.3%) 0.0 p.p. (3.5%) (-0.1%) -3.6 p.p. (4.7%) (5.2%) 0.5 p.p. (9.3%) (8.8%) -0.5 p.p. Profit Attributable to Owners of Parent 50.7 56.0 5.3 15.3 -0.2 -15.5 5.2 5.8 0.5 20.0 51.1 31.0 (Net Profit Margin) (3.9%) (4.1%) 0.2 p.p. (7.8%) (-0.2%) -8.0 p.p. (3.2%) (3.3%) 0.1 p.p. (6.4%) (17.4%) 11.0 p.p. ◆ Comparisons with Targets for the Fiscal Year Nippon COMSYS-G SANCOM-G TOSYS-G TSUKEN-G Mar. 2025 Mar. 2026 Progress Rate Mar. 2025 Mar. 2026 Progress Rate Mar. 2025 Mar. 2026 Progress Rate Mar. 2025 Mar. 2026 Progress RateFull Year Targets 1H Results Full Year Targets 1H Results Full Year Targets 1H Results Full Year Targets 1H Results Orders Received 3,450 1,688 49.0% 375 160 42.9% 390 214 55.0% 785 338 51.9% Net Sales 3,200 1,365 42.7% 365 132 36.4% 385 175 45.5% 755 293 45.9% Gross Profits 404 174.6 43.2% 29 8.1 27.3% 49 19.0 38.4% 118 44.9 45.8% (Gross Profit Margin) (12.6%) (12.8%) (8.2%) (6.1%) (12.9%) (10.9%) (15.7%) (15.3%) SG&A Expenses 184 91.8 49.9% 18 8.7 47.5% 21 10.9 50.8% 44 19.4 49.9% Operating Profit 220 82.7 37.6% 11 -0.5 -4.6% 28 8.1 28.9% 74 25.5 43.0% (Operating Margin) (6.9%) (6.1%) (3.2%) (-0.4%) (7.3%) (4.6%) (9.9%) (8.7%) 2 2-1. Statements of Income for Each Principal Operating Company’s Group For the Six Months Ended September 30, 2025 Notes: 1. Business transactions between operating groups have not been eliminated. 2. p.p. = percentage points 3. In conjunction with the business reorganization among subsidiaries conducted in July 2025, some of the full-year target figures for TSUKEN-G have been transferred to the full-year target figures for COMSYS JOHO SYSTEM-G.
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(Unit: ¥100 million) ◆ Comparisons with the Previous Term NDS-G SYSKEN-G Hokuriku Denwa Kouji-G COMSYS JOHO SYSTEM-G Mar. 2025 Mar. 2026 Difference Mar. 2025 Mar. 2026 Difference Mar. 2025 Mar. 2026 Difference Mar. 2025 Mar. 2026 Difference 1H Results 1H Results 1H Results 1H Results 1H Results 1H Results 1H Results 1H Results Orders Received 504 465 -38 171 173 2 113 96 -16 103 178 75 Net Sales 404 433 29 145 148 2 79 83 4 89 147 57 Gross Profits 59.1 70.1 10.9 16.6 20.9 4.3 9.6 15.3 5.7 13.4 22.7 9.2 (Gross Profit Margin) (14.6%) (16.2%) 1.6 p.p. (11.4%) (14.1%) 2.7 p.p. (12.1%) (18.3%) 6.2 p.p. (15.1%) (15.4%) 0.3 p.p. SG&A Expenses 34.8 36.9 2.0 10.6 13.4 2.7 6.1 6.8 0.6 5.6 9.1 3.4 Operating Profit 24.2 33.1 8.8 6.0 7.5 1.5 3.5 8.5 5.0 7.8 13.6 5.7 (Operating Margin) (6.0%) (7.6%) 1.6 p.p. (4.1%) (5.1%) 1.0 p.p. (4.4%) (10.2%) 5.8 p.p. (8.8%) (9.2%) 0.4 p.p. Ordinary Profit 26.2 35.6 9.4 7.1 8.5 1.4 3.7 8.7 5.0 7.8 13.7 5.9 (Ordinary Profit Margin) (6.5%) (8.2%) 1.7 p.p. (4.9%) (5.8%) 0.9 p.p. (4.7%) (10.4%) 5.7 p.p. (8.8%) (9.4%) 0.6 p.p. Profit Attributable to Owners of Parent 16.0 25.0 8.9 4.3 6.0 1.7 2.4 6.3 3.8 4.7 8.5 3.8 (Net Profit Margin) (4.0%) (5.8%) 1.8 p.p. (3.0%) (4.1%) 1.1 p.p. (3.1%) (7.5%) 4.4 p.p. (5.3%) (5.8%) 0.5 p.p. ◆ Comparisons with Targets for the Fiscal Year NDS-G SYSKEN-G Hokuriku Denwa Kouji-G COMSYS JOHO SYSTEM-G Mar. 2025 Mar. 2026 Progress Rate Mar. 2025 Mar. 2026 Progress Rate Mar. 2025 Mar. 2026 Progress Rate Mar. 2025 Mar. 2026 Progress RateFull Year Targets 1H Results Full Year Targets 1H Results Full Year Targets 1H Results Full Year Targets 1H Results Orders Received 890 465 52.4% 360 173 48.3% 195 96 49.7% 356 178 50.3% Net Sales 890 433 48.7% 355 148 41.7% 195 83 43.1% 333 147 44.2% Gross Profits 132 70.1 53.0% 46 20.9 45.4% 29 15.3 51.9% 54 22.7 41.4% (Gross Profit Margin) (14.9%) (16.2%) (13.0%) (14.1%) (15.2%) (18.3%) (16.5%) (15.4%) SG&A Expenses 73 36.9 50.3% 27 13.4 48.7% 14 6.8 48.3% 20 9.1 45.2% Operating Profit 58 33.1 56.4% 18 7.5 40.4% 15 8.5 55.0% 34 13.6 39.2% (Operating Margin) (6.6%) (7.6%) (5.3%) (5.1%) (8.0%) (10.2%) (10.4%) (9.2%) 3 2-2. Statements of Income for Each Principal Operating Company’s Group For the Six Months Ended September 30, 2025 Notes: 1. Business transactions between operating groups have not been eliminated. 2. p.p. = percentage points 3. In conjunction with the business reorganization among subsidiaries conducted in July 2025, some of the full-year target figures for TSUKEN-G have been transferred to the full-year target figures for COMSYS JOHO SYSTEM-G.
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4 (Unit: ¥100 million) ◆ Orders Received (Six months ended September 30) FY March 2025 FY March 2026 (Reference) FY March 2025 1H Results 1H Results Difference (c) Percentage Difference Full Year Targets Progress Rate Full Year Results Progress Rate Business Area (a) (b) (b)-(a) (c)/(a) (d) (b)/(d) (e) (a)/(e) NTT Engineering Access 883 818 -65 -7.4% 1,680 48.7% 1,665 53.0% Network 136 125 -11 -8.2% 290 43.2% 284 48.0% Mobile 216 301 85 39.5% 470 64.2% 453 47.7% Subtotal 1,236 1,245 9 0.7% 2,440 51.0% 2,403 51.4% NCC Engineering 215 223 7 3.5% 450 49.7% 451 47.9% IT Solutions 567 704 137 24.2% 1,350 52.2% 1,323 42.8% Social System-Related 1,238 1,041 -196 -15.9% 2,260 46.1% 2,209 56.0% Total 3,257 3,215 -42 -1.3% 6,500 49.5% 6,388 51.0% ◆ Net Sales (Six months ended September 30) FY March 2025 FY March 2026 (Reference) FY March 2025 1H Results 1H Results Difference (c) Percentage Difference Full Year Target Progress Rate Full Year Results Progress Rate Business Area (a) (b) (b)-(a) (c)/(a) (d) (b)/(d) (e) (a)/(e) NTT Engineering Access 752 774 22 3.0% 1,620 47.8% 1,612 46.6% Network 107 107 0 0.5% 270 39.9% 266 40.3% Mobile 157 180 22 14.6% 490 36.9% 418 37.7% Subtotal 1,017 1,063 46 4.5% 2,380 44.7% 2,296 44.3% NCC Engineering 210 170 -39 -18.8% 450 37.9% 490 42.8% IT Solutions 490 556 65 13.4% 1,300 42.8% 1,245 39.4% Social System-Related 924 913 -10 -1.1% 2,070 44.1% 2,113 43.7% Total 2,641 2,703 61 2.3% 6,200 43.6% 6,146 43.0% ◆ Contract Backlogs FY March 2025 FY March 2026 1H Results 1H Results Difference (c) Percentage Difference Business Area (a) (b) (b)-(a) (c)/(a) NTT Engineering Access 404 369 -34 -8.5% Network 156 162 6 4.3% Mobile 313 411 97 31.2% Subtotal 874 944 70 8.0% NCC Engineering 229 237 7 3.3% IT Solutions 453 602 149 33.1% Social System-Related 1,466 1,376 -89 -6.1% Total 3,023 3,161 137 4.6% 3. Orders Received, Net Sales, and Contract Backlogs by Business (COMSYS.HD Consolidated) Notes: The orders received, net sales, and contract backlogs from infra-sharing solutions operators have been reclassified from the NTT Engineering business to the NCC Engineering business. In this table, for the purpose of comparison with the previous fiscal year, the figures for the previous fiscal year have been adjusted to reflect the new classification.
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(Reference) FY March 2025 Orders Received, Net Sales, and Contract Backlogs by Business Area (COMSYS.HD Consolidated) 5 ◆ Orders Received FY March 2025 1Q Results 1H Results Cumulative 3Q Results Full Year Results Business Area NTT Engineering Access 481 883 1,301 1,665 Network 54 136 206 284 Mobile 108 216 338 453 Subtotal 644 1,236 1,846 2,403 NCC Engineering 114 215 349 451 IT Solutions 313 567 998 1,323 Social System-Related 707 1,238 1,634 2,209 Total 1,779 3,257 4,829 6,388 ◆ Net Sales FY March 2025 1Q Results 1H Results Cumulative 3Q Results Full Year Results Business Area NTT Engineering Access 380 752 1,153 1,612 Network 50 107 168 266 Mobile 70 157 265 418 Subtotal 502 1,017 1,587 2,296 NCC Engineering 95 210 327 490 IT Solutions 200 490 805 1,245 Social System-Related 452 924 1,457 2,113 Total 1,251 2,641 4,177 6,146 ◆ Contract Backlogs FY March 2025 1Q Results 1H Results Cumulative 3Q Results Full Year Results Business Area NTT Engineering Access 373 404 421 326 Network 130 156 164 145 Mobile 293 313 328 238 Subtotal 797 874 914 709 NCC Engineering 242 229 246 237 IT Solutions 489 453 569 454 Social System-Related 1,406 1,466 1,329 1,247 Total 2,936 3,023 3,059 2,649 ◆Notes: The orders received, net sales, and contract backlogs from infra sharing solutions operators have been reclassified from the NTT Engineering business to the NCC Engineering business. In this table, the figures have been adjusted to reflect the new classification.
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For further information, please contact: IR Department Telephone: +81-3-3448-7000 (direct) Facsimile: +81-3-3448-7001 E-Mail: chd-ir@comsys.co.jp URL: https://www.comsys-hd.co.jp/