Consolidated Financial Results for the Three Months Ended June 30, 2025

August 8, 2025

Company name: Oriental Shiraishi Corporation Listing: Tokyo Stock Exchange Securities code: 1786

URL: https://www.orsc.co.jp/english/ Representative: Tatsuya Ohno, President and CEO

Inquiries: Yukihiko Hashimoto, Director; General Manager, Administration Division Telephone: +81-3-6220-0630

Scheduled date to commence dividend payments: -

Preparation of supplementary material on financial results: None Holding of financial results briefing: None

(Yen amounts are rounded down to millions, unless otherwise noted.)

1. Consolidated financial results for the three months ended June 30, 2025 (from April 1, 2025 to June 30, 2025)
   1. Consolidated operating results (cumulative) (Percentages indicate year-on-year changes.)

      	Net sales		Operating profit		Ordinary profit		Profit attributable to owners of parent
      Three months ended	Million yen	%	Million yen	%	Million yen	%	Million yen	%
      June 30, 2025	18,302	8.1	2,009	(5.1)	2,046	(4.5)	1,457	1.3
      June 30, 2024	16,936	8.6	2,116	96.7	2,142	91.3	1,438	85.5

      Note: Comprehensive income: For three months ended June 30, 2025: ¥1,497 million [4.8%]

      For three months ended June 30, 2024: ¥1,429 million [41.2%]

      	Basic earnings per share	Diluted earnings per share
      Three months ended	Yen	Yen
      June 30, 2025	11.15	-
      June 30, 2024	10.86	-

      Note: Diluted earnings per share are not indicated as there are no potential shares.

   2. Consolidated financial position

   	Total assets	Net assets	Equity-to-asset ratio	Net assets per share
   As of	Million yen	Million yen	%	Yen
   June 30, 2025	76,368	51,148	66.9	395.07
   March 31, 2025	77,574	51,268	66.1	390.68

   Reference: Equity: As of June 30, 2025: ¥51,107 million

   As of March 31, 2025: ¥51,268 million

2. Cash dividends

   	Annual dividends per share
   	First quarter-end	Second quarter-end	Third quarter-end	Fiscal year-end	Total
   	Yen	Yen	Yen	Yen	Yen
   Fiscal year ended March 31, 2025	-	7.00	-	7.50	14.50
   Fiscal year ending March 31, 2026	-
   Fiscal year ending March 31, 2026 (forecast)		7.00	-	7.50	14.50

   Note: Revisions to the forecasts of cash dividends most recently announced: None

3. Consolidated financial results forecast for the fiscal year ending March 31, 2026 (from April 1, 2025 to March 31, 2026)

(Percentages indicate year-on-year changes.)

Note: Revisions to the forecasts of financial results most recently announced: None

1. Significant changes in the scope of consolidation during the period: Yes Newly included: 1 company

   (Company name: Denka Renotec Co., Ltd.)

   Excluded: (Company name: )

2. Adoption of accounting treatment specific to the preparation of quarterly consolidated financial statements: None

3. Changes in accounting policies, changes in accounting estimates, and restatement

   1. Changes in accounting policies due to revisions to accounting standards and other regulations: None

   2. Changes in accounting policies due to other reasons: None

   3. Changes in accounting estimates: None

   4. Restatement: None

4. Number of issued shares (common shares)

   1. Total number of issued shares at the end of the period (including treasury shares)

      As of June 30, 2025	138,809,400 shares
      As of March 31, 2025	138,809,400 shares

   2. Number of treasury shares at the end of the period

      As of June 30, 2025	9,447,348 shares
      As of March 31, 2025	7,579,489 shares

   3. Average number of shares outstanding during the period (cumulative from the beginning of the fiscal year)

• Review of the Japanese-language originals of the attached consolidated quarterly financial statements by certified public accountants or an audit firm: Yes (voluntary)

• Proper use of earnings forecasts, and other special matters

Financial results forecast and other forward-looking statements presented herein are based on the information the Company currently possesses and the assumptions it deems reasonable. Actual outcomes, etc. may diverge

significantly from them due to wide-ranging factors.

1. Quarterly Consolidated Balance Sheets

   (Million yen)

   As of March 31, 2025		As of June 30, 2025
   Assets
   Current assets
   Cash and deposits	20,206	17,402
   Notes receivable, accounts receivable from completed construction contracts and other	29,497	30,556
   Costs on construction contracts in progress	2,749	2,092
   Raw materials and supplies	650	675
   Advances paid	1,739	1,698
   Income taxes refund receivable	24	18
   Consumption taxes refund receivable	172	242
   Other	776	973
   Allowance for doubtful accounts	(2)	(1)
   Total current assets	55,812	53,658
   Non-current assets
   Property, plant and equipment
   Buildings and structures, net	2,066	2,101
   Machinery and equipment, net	3,249	3,313
   Land	5,516	5,516
   Construction in progress	1,576	2,182
   Other, net	306	300
   Total property, plant and equipment	12,715	13,414
   Intangible assets
   Goodwill	3,201	3,318
   Software	187	172
   Other	19	19
   Total intangible assets	3,408	3,510
   Investments and other assets
   Investment securities	3,955	4,026
   Investments in capital	788	786
   Shares of subsidiaries and associates	212	212
   Retirement benefit asset	32	33
   Deferred tax assets	300	365
   Other	386	397
   Allowance for doubtful accounts	(39)	(38)
   Total investments and other assets	5,637	5,784
   Total non-current assets	21,761	22,710
   Total assets	77,574	76,368

   (Million yen)

   As of March 31, 2025		As of June 30, 2025
   Liabilities
   Current liabilities
   Notes payable, accounts payable for construction contracts	9,849	9,624
   Short-term borrowings	-	80
   Current portion of long-term borrowings	392	392
   Accounts payable - other	1,480	1,610
   Income taxes payable	1,134	932
   Accrued consumption taxes	1,546	64
   Advances received on construction contracts in progress	2,734	2,377
   Deposits received	976	1,624
   Provision for bonuses	23	552
   Provision for loss on construction contracts	210	183
   Provision for warranties for completed construction	25	34
   Other	365	235
   Total current liabilities	18,739	17,712
   Non-current liabilities
   Long-term borrowings	2,824	2,726
   Provision for share-based payments	224	245
   Provision for special repairs	2	3
   Retirement benefit liability	2,607	2,686
   Long-term accounts payable - other	1,345	1,439
   Deferred tax liabilities	486	333
   Other	74	74
   Total non-current liabilities	7,565	7,508
   Total liabilities	26,305	25,220
   Net assets
   Shareholders' equity
   Share capital	5,000	5,000
   Capital surplus	2,072	2,072
   Retained earnings	44,241	44,702
   Treasury shares	(1,197)	(1,879)
   Total shareholders' equity	50,116	49,895
   Accumulated other comprehensive income
   Valuation difference on available-for-sale securities	1,090	1,140
   Remeasurements of defined benefit plans	61	72
   Total accumulated other comprehensive income	1,152	1,212
   Non-controlling interests	-	40
   Total net assets	51,268	51,148
   Total liabilities and net assets	77,574	76,368

2. Quarterly Consolidated Statements of Income and Comprehensive Income

Quarterly Consolidated Statements of Income Three Months Ended June 30

(Million yen)

Quarterly Consolidated Statements of Comprehensive Income Three Months Ended June 30

(Million yen)