Summary of Consolidated Financial Results for the First Quarter Ended June 30, 2025(Unaudited)

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Company Representative:

Contact Information:

Nihon Seiko Co., Ltd.

https://www.nihonseiko.co.jp

Tokyo

5729

Noritaka Ueda, President & CEO

Yoshitaro Oonishi, Director, General Manager, Corporate Planning ＆ Administration Dept.

Tel +81-3-3235-0021

Net sales

Operating income

Ordinary income

Profit

attributable to owners of parent

EPS

For the year ending March 31, 2025

Millions of Yen

%

Millions of Yen

%

Millions of Yen

%

Millions of Yen

%

Yen

Full year

34,900

38.6

3,380

(6.1)

3,290

(6.8)

2,250

(8.4)

919.39

4. Others

(1) Changes in major subsidiaries during the fiscal year (changes in specified subsidiaries accompanying

changes in scope of consolidation) : No

(2) Application of special accounting for preparing quarterly consolidated financial statements : No

(3) Changes in accounting policies, accounting estimates and retrospective restatements in the consolidated financial

statements

1. Changes due to amendment of accounting standards : No

2. Changes due to other reasons : No

3. Changes in accounting estimates : No

4. Retrospective restatements : No

(4) Number of outstanding shares at the end of the period:

1. Number of outstanding shares at the end of the period:

As of June 30, 2025: 2,605,900

As of March 31, 2025: 2,605,900

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

As of June 30, 2025: 158,661

As of March 31, 2025: 158,617

3. Average number of outstanding shares during period:

For the 1st Quarter ending March 31, 2026: 2,447,281

For the 1st Quarter ended March 31, 2025: 2,443,183

*Review of the Japanese-language originals of the attached consolidated quarterly financial statements by certified public

accountants or an audit firm: No

Explanation on appropriate use of business forecasts, and other special notes

The aforementioned forecasts are based on certain assumptions that Company has deemed relevant and

appropriate as of the date of publication.

Actual results may differ materially from the forecast due to many factors.

‌(Thousands of yen)

As of March 31, 2025

As of June 30, 2025

Assets

Current assets

Cash and deposits

2,128,680

1,976,879

Notes and accounts receivable - trade

5,109,073

6,792,204

Merchandise and finished goods

3,823,709

4,527,494

Work in process

404,737

438,750

Raw materials and supplies

3,100,380

2,881,890

Other

423,614

414,752

Allowance for doubtful accounts

(17,346)

(23,213)

Total current assets

14,972,851

17,008,758

Non-current assets

Property, plant and equipment

Buildings and structures, net

2,483,130

2,469,843

Machinery, equipment and vehicles, net

937,612

897,983

Land

1,436,191

1,436,191

Other, net

424,175

419,997

Total property, plant and equipment

5,281,110

5,224,015

Intangible assets

136,406

131,368

Investments and other assets

547,184

533,908

Total non-current assets

5,964,701

5,889,292

Total assets

20,937,553

22,898,051

(Thousands of yen)

As of March 31, 2025

As of June 30, 2025

Liabilities

Current liabilities

Notes and accounts payable - trade

2,388,240

1,607,120

Electronically recorded obligations - operating

333,459

429,653

Short-term borrowings

2,965,100

4,063,100

Income taxes payable

1,121,760

857,318

Provision for bonuses

252,515

120,486

Other

481,238

872,253

Total current liabilities

7,542,314

7,949,932

Non-current liabilities

Long-term borrowings

726,400

627,500

Retirement benefit liability

365,295

362,007

Asset retirement obligations

38,391

38,519

Other

332,310

348,605

Total non-current liabilities

1,462,397

1,376,632

Total liabilities

9,004,711

9,326,564

Net assets

Shareholders' equity

Share capital

1,018,126

1,018,126

Capital surplus

580,107

580,107

Retained earnings

10,412,225

12,036,817

Treasury shares

(149,730)

(149,956)

Total shareholders' equity

11,860,730

13,485,095

Accumulated other comprehensive income

Valuation difference on available-for-sale

securities

54,382

71,909

Foreign currency translation adjustment

17,728

14,481

Total accumulated other comprehensive income

72,111

86,391

Total net assets

11,932,841

13,571,486

Total liabilities and net assets

20,937,553

22,898,051

(Thousands of yen)

Three months ended June 30, 2024

Three months ended June 30, 2025

Net sales

4,864,965

10,793,296

Cost of sales

4,185,199

7,553,836

Gross profit

679,766

3,239,460

Selling, general and administrative expenses

295,158

361,166

Operating profit

384,607

2,878,293

Non-operating income

Dividend income

3,341

4,878

Foreign exchange gains

14,272

-

Insurance claim income

-

5,049

Other

5,015

4,137

Total non-operating income

22,629

14,064

Non-operating expenses

Interest expenses

8,262

18,109

Foreign exchange losses

-

32,082

Care and maintenance costs of suspended mine

1,354

2,072

Other

1

253

Total non-operating expenses

9,618

52,518

Ordinary profit

397,618

2,839,840

Extraordinary income

Gain on sale of non-current assets

835

-

Total extraordinary income

835

-

Extraordinary losses

Loss on retirement of non-current assets

106

346

Total extraordinary losses

106

346

Profit before income taxes

398,347

2,839,493

Income taxes - current

100,202

817,352

Income taxes - deferred

25,154

54,930

Total income taxes

125,357

872,282

Profit

272,989

1,967,211

Profit attributable to owners of parent

272,989

1,967,211

(Thousands of yen)

Three months ended June 30, 2024

Three months ended June 30, 2025

Profit

272,989

1,967,211

Other comprehensive income

Valuation difference on available-for-sale securities

3,642

17,526

Foreign currency translation adjustment

1,946

(3,246)

Total other comprehensive income

5,589

14,279

Comprehensive income

278,578

1,981,491

Comprehensive income attributable to

Comprehensive income attributable to owners of

parent

278,578

1,981,491

Reportable segments

Others

Total

Reconciling items

Per quarterly consolidated financial statements

Antimony products

Atomized

metal powders

Reportable segments

Sales

Revenues from external customers

8,416,590

2,363,620

10,780,210

13,086

10,793,296

-

10,793,296

Transactions with other segments

-

14,199

14,199

414

14,614

(14,614)

-

Net sales

8,416,590

2,377,820

10,794,410

13,500

10,807,911

(14,614)

10,793,296

Operating profit (loss)

2,779,145

86,793

2,865,938

4,150

2,870,089

8,204

2,878,293