Notice Concerning the Revision of Financial Results Forecasts and Dividend Forecasts NEW!

November 13, 2025 Company name: OKUMURA CORPORATION

Name of representative: Takanori Okumura

President and Representative Director (Securities Code: 1833; Tokyo Stock Exchange Prime Market)

Inquiries: Shunsuke Okuda,

General Manager of Finance & Accounting Department, Administration Headquarters (Telephone: +81-6-6621-1101)

OKUMURA CORPORATION (the "Company") hereby announces that it has revised its financial results forecast and its year-end dividend forecast for the fiscal year ending March 31, 2026, announced together with the financial results announcement on May 14, 2025, based on the recent trend in performance and other factors.

• Revision of financial results forecasts

  Revisions to the consolidated full-year financial results forecasts for the fiscal year ending March 31, 2026 (April 1, 2025 to March 31, 2026)

  	Net sales	Operating profit	Ordinary profit	Profit attributable to owners of parent	Profit per share
  Previously announced forecasts (A)	Millions of yen 298,500	Millions of yen 10,800	Millions of yen 12,700	Millions of yen 11,300	Yen 315.02
  Revised forecasts (B)	302,500	13,000	15,200	12,300	342.90
  Change (B-A)	4,000	2,200	2,500	1,000
  Change (%)	1.3	20.4	19.7	8.8
  (Reference) Results for the fiscal year ended March 31, 2025	298,222	9,731	8,926	2,722	74.01

  Revisions to the non-consolidated full-year financial results forecasts for the fiscal year ending March 31, 2026 (April 1, 2025 to March 31, 2026)

  	Net sales	Operating profit	Ordinary profit	Profit	Profit per share
  Previously announced forecasts (A)	Millions of yen 292,000	Millions of yen 13,200	Millions of yen 13,800	Millions of yen 11,500	Yen 320.59
  Revised forecasts (B)	296,000	15,400	16,200	12,400	345.69
  Change (B-A)	4,000	2,200	2,400	900
  Change (%)	1.4	16.7	17.4	7.8
  (Reference) Results for the fiscal year ended March 31, 2025	290,359	13,416	13,910	6,956	189.08

  Reason for the revisions

  (Non-consolidated financial results forecasts)

  Operating profit is expected to be approximately ¥15,400 million, which is approximately ¥2,200 million higher than previously forecast, and ordinary profit is expected to be ¥16,200 million, which is approximately ¥2,400 million higher than previously forecast, due mainly to orders awarded for additional work and lower costs in the construction business.

  In addition, profit is expected to be ¥12,400 million, which is approximately ¥900 million higher than previously forecast, due mainly to a revision of the plan to sell investment securities.

  The gross profit in the construction business is expected to be 11.7% (Civil Engineering Business 14.5%, Building Business 10.0%). The previously announced forecast was 10.8% (Civil Engineering Business 13.2%, Building Business 9.4%).

  (Consolidated financial results forecasts)

  In line with the revisions to the non-consolidated financial results forecast, the consolidated financial results forecast has also been revised.

  Valuation gains on forward exchange contracts related to ISHIKARI BIO ENERGY GODO KAISHA, a consolidated subsidiary of the Company, was recorded under non-operating income in the consolidated financial results for the second quarter (interim period) of the fiscal year ending March 31, 2026. However, valuation gains and losses on forward exchange contracts related to ISHIKARI BIO ENERGY GODO KAISHA are not included in non-operating income and expenses in the consolidated financial results forecast. The Company's consolidated financial results may be significantly impacted by movements in foreign exchange markets in the future.

  Please refer to "Financial Results Supplementary Materials for the Second Quarter of the Fiscal Year Ending March 31, 2026" announced separately today, regarding the revised financial results forecast.

• Revision of dividend forecast

Reason for the revisions

The Company recognizes the distribution of profits as one of the most important managerial issues, and its shareholder return policy for application during the Medium-Term Business Plan (FY2025-2027) is as below. We have decided not to include valuation gains and losses on forward exchange contracts, which are one-off special factors, in the calculation of the dividend payout ratio.

Based on this shareholder return policy, the annual dividend forecast for the fiscal year ending March 31, 2026 has been revised in line with the revisions to the consolidated full-year financial results forecasts.

The year-end dividend per share has been increased by ¥20.00 from the previous forecast of ¥110.00 to

¥130.00, bringing the annual dividend per share to ¥240.00, including an interim dividend of ¥110.00.

Consolidated payout ratio*1 of 70% or more (Dividend on equity (DOE)*2 ratio of 2.0% or more, regardless of business performance)

*1: Consolidated payout ratio = Total annual dividends (interim + year-end) / profit attributable to owners of parent [Excluding the impact of one-off special factors (valuation gains and losses on forward exchange contracts)]

*2: DOE = Total annual dividends (interim + year-end) / equity

Note: The performance forecasts and other forward-looking statements contained in this document are based on information available at the time of publication and certain assumptions considered reasonable by the Company. The Company does not provide any guarantee that these forecasts will be achieved, and actual results may differ significantly due to various factors.