Interim report
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Note : This document has been translated from the Japanese original for reference purposes only . In the event of any discrepancy between this translated document and the Japanese original , the original shall prevail . Consolidated Financial Results for the Three Months Ended June 30 , 2026 ( Under Japanese GAAP ) Company name : Mitsui Kinzoku Company , Limited August 7 , 2026 Listing : Tokyo Stock Exchange Securities code : 5706 URL : https://www.mitsui-kinzoku.com Representative : IKENOBU Seiji Inquiries : KATSUMI Shiraishi Telephone : + 81-3-5437-8028 Scheduled date to commence dividend payments : Preparation of supplementary material on financial results : Yes Holding of financial results briefing : Yes President and Representative Director General Manager , Corporate Communications Dept. FASF ( Yen amounts are rounded down to millions , unless otherwise noted . ) 1. Consolidated financial results for the three months ended June 30 , 2026 ( from April 1 , 2026 to June 30 , 2026 ) ( 1 ) Consolidated operating results ( cumulative ) ( Percentages indicate year - on - year changes . ) Net sales Three months ended June 30 , 2026 Millions of yen 201,597 % 19.3 June 30 , 2025 Note : Comprehensive income Three months ended June 30 , 2026 June 30 , 2025 ( 2 ) Consolidated financial position For the three months ended June 30 , 2026 : For the three months ended June 30 , 2025 : Basic earnings per share Yen 294.08 ( 104.41 ) 169,040 ( 0.5 ) Operating profit Millions of yen 21,027 11,424 ( 51.3 ) % 84.1 Ordinary profit Millions of yen 23,474 % Profit attributable to owners of parent Millions of yen % 134.3 16,824 10,019 ( 61.7 ) ( 5,970 ) ¥ 18,040 million [ - % ] 1 ¥ ( 7,282 ) million [ - % ] Diluted earnings per share Yen As of June 30 , 2026 March 31 , 2026 Total assets Net assets Equity - to - asset ratio Millions of yen 719,268 697,481 Millions of yen % 430,465 58.7 420,910 59.1 As of June 30 , 2026 : ¥ 422,072 million As of March 31 , 2026 : ¥ 412,048 million Reference : Equity
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22222..... CCCCCaaaaassssshhhhh dddddiiiiivvvvviiiiidddddeeeeennnnndddddsssss 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 - 100.00 - 145.00 245.00March 31, 2026 Fiscal year ending -March 31, 2027 Fiscal year ending March 31, 2027 (Forecast) 140.00 - 14.00 - Note: Revisions to the forecast of cash dividends most recently announced: Yes The Company resolved at the Board of Directors meeting held today to conduct a 10-for-1 stock split for shares of the Company’s common stock with an effective date of October 1, 2026. Therefore, the dividend per share for the fiscal year ending March 31, 2027 (Forecast) is stated as the amount reflecting the impact of this stock split. The dividend per share at the fiscal year ending March 31, 2027 (Forecast) without reflecting the stock split would be 140.00 yen and the full-year total amount would be 280.00 yen. For details, please refer to “Notice regarding Stock Split, Partial Amendment of Articles of Incorporation, and Revision of Dividend Forecast.” Note: Breakdown of the first quarter dividend for the fiscal year ending March 31, 2027 : Commemorative dividend - yen Special dividend - yen 33333..... CCCCCooooonnnnnsssssooooollllliiiiidddddaaaaattttteeeeeddddd fffffiiiiinnnnnaaaaannnnnccccciiiiiaaaaalllll rrrrreeeeesssssuuuuulllllttttt fffffooooorrrrreeeeecccccaaaaassssstttttsssss fffffooooorrrrr ttttthhhhheeeee fffffiiiiissssscccccaaaaalllll yyyyyeeeeeaaaaarrrrr eeeeennnnndddddiiiiinnnnnggggg MMMMMaaaaarrrrrccccchhhhh 3333311111,,,,, 22222000002222277777 (((((fffffrrrrrooooommmmm AAAAAppppprrrrriiiiilllll 11111,,,,, 22222000002222266666 tttttooooo MMMMMaaaaarrrrrccccchhhhh 3333311111,,,,, 22222000002222277777))))) (Percentages indicate year-on-year changes.) Net sales Operating profit Ordinary profit Profit attributable to owners of parent Basic earnings per share Millions of yen % Millions of yen % Millions of yen % Millions of yen % Yen Six months ending September 30, 2026 420,000 15.3 45,000 13.2 48,500 23.9 35,000 83.7 611.77 Full year 850,000 12.1 94,000 (28.2) 100,000 (26.9) 80,000 (12.3) 139.83 Note: Revisions to the financial result forecast most recently announced: Yes Basic earnings per share in the consolidated financial forecast for the fiscal year ending March 31, 2027 reflects the impact of the stock split (10-for-1 stock split). Basic earnings per share in the consolidated financial forecast for the fiscal year ending March 31, 2027 without reflecting the stock split would be 1,398.33 yen. ***** NNNNNooooottttteeeeesssss (1) Significant changes in the scope of consolidation during the period: None Newly included: - companies( ) Excluded: - companies( ) (2) Adoption of accounting treatment specific to the preparation of quarterly consolidated financial statements: Yes (3) Changes in accounting policies, changes in accounting estimates, and restatement (i) Changes in accounting policies due to revisions to accounting standards and other regulations: None (ii) Changes in accounting policies due to other reasons: None (iii) Changes in accounting estimates: None (iv) Restatement: None
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(4) Number of issued shares (common shares) (i) Total number of issued shares at the end of the period (including treasury shares) As of June 30, 2026 57,415,430 shares As of March 31, 2026 57,415,430 shares (ii) Number of treasury shares at the end of the period As of June 30, 2026 206,453 shares As of March 31, 2026 203,126 shares (iii) Average number of shares outstanding during the period (cumulative from the beginning of the fiscal year) Three months ended June 30, 2026 57,211,140 shares Three months ended June 30, 2025 57,181,318 shares * Review of the Japanese-language originals of the attached consolidated quarterly financial statements by certified public accountants or an audit firm: None * Proper use of earnings forecasts, and other special matters
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1 Contents of the Attachment 1.Quarterly Consolidated Financial Statements and Primary Notes............................................................................ 2 (1) Quarterly Consolidated Balance Sheets.............................................................................................................. 2 (2) Quarterly Consolidated Statements of Income and Comprehensive Income...................................................... 4 Quarterly Consolidated Statements of Income For the three months ended June 30, 2026.............................. 4 Quarterly Consolidated Statements of Comprehensive Income For the three months ended June 30, 2026.... 5 (3) Key notes related to Quarterly Consolidated Financial Statements.................................................................... 6 Notes to going concern assumptions................................................................................................................. 6 Notes to Segment information........................................................................................................................... 6 Notes to Quarterly Consolidated Statements of Cash Flows............................................................................. 7
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2 1.Quarterly Consolidated Financial Statements and Primary Notes (1) Quarterly Consolidated Balance Sheet (Millions of yen) As of March 31, 2026 As of June 30, 2026 Assets Current assets Cash and deposits 58,271 53,605 Notes and accounts receivable - trade, and contract assets 127,810 124,987 Merchandise and finished goods 67,729 71,508 Work in process 64,286 66,783 Raw materials and supplies 80,869 100,964 Other 25,888 30,590 Allowance for doubtful accounts (1,388) (1,443) Total current assets 423,466 446,996 Non-current assets Property, plant and equipment Buildings and structures 199,421 202,929 Accumulated depreciation (138,381) (139,986) Buildings and structures, net 61,039 62,943 Machinery, equipment and vehicles 507,470 514,144 Accumulated depreciation (443,068) (448,331) Machinery, equipment and vehicles, net 64,402 65,813 Land used for mining operations 388 391 Accumulated depreciation (317) (319) Land used for mining operations, net 71 72 Land 28,550 28,639 Construction in progress 18,156 15,672 Other 34,027 34,572 Accumulated depreciation (28,271) (28,774) Other, net 5,755 5,798 Total property, plant and equipment 177,975 178,939 Intangible assets 6,870 6,368 Investments and other assets Investment securities 66,125 63,704 Long-term loans receivable 390 392 Retirement benefit asset 16,073 16,384 Deferred tax assets 4,505 4,407 Other 2,337 2,332 Allowance for doubtful accounts (262) (259) Total investments and other assets 89,169 86,964 Total non-current assets 274,014 272,271 Total assets 697,481 719,268
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3 (Millions of yen) As of March 31, 2026 As of June 30, 2026 Liabilities Current liabilities Notes and accounts payable - trade 61,294 68,492 Short-term borrowings 36,164 30,774 Commercial papers - 11,000 Current portion of bonds payable 10,000 10,000 Income taxes payable 13,806 8,916 Provisions 9,738 6,038 Other 41,268 49,225 Total current liabilities 172,273 184,448 Non-current liabilities Bonds payable 30,000 30,000 Long-term borrowings 37,976 37,852 Deferred tax liabilities 8,441 7,973 Provisions 1,901 1,840 Retirement benefit liability 19,450 19,540 Asset retirement obligations 4,397 4,502 Other 2,129 2,645 Total non-current liabilities 104,298 104,354 Total liabilities 276,571 288,802 Net assets Shareholders' equity Share capital 42,377 42,377 Capital surplus 17,609 17,609 Retained earnings 332,999 341,528 Treasury shares (653) (662) Total shareholders' equity 392,333 400,852 Accumulated other comprehensive income Valuation difference on available-for-sale securities 1,242 563 Deferred gains or losses on hedges (3,343) (3,203) Foreign currency translation adjustment 20,650 22,769 Remeasurements of defined benefit plans 1,166 1,090 Total accumulated other comprehensive income 19,715 21,219 Non-controlling interests 8,861 8,393 Total net assets 420,910 430,465 Total liabilities and net assets 697,481 719,268
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4 (2) Quarterly Consolidated Statements of Income and Comprehensive Income Quarterly Consolidated Statement of Income For the three months ended June 30, 2026 (Millions of yen) For the three months ended June 30, 2025 For the three months ended June 30, 2026 Net sales 169,040 201,597 Cost of sales 138,634 159,505 Gross profit 30,405 42,091 Selling, general and administrative expenses 18,981 21,064 Operating profit 11,424 21,027 Non-operating income Interest income 142 190 Dividend income 485 307 Rental income from real estate 111 209 Share of profit of entities accounted for using equity method 778 2,834 Other 126 137 Total non-operating income 1,644 3,679 Non-operating expenses Interest expenses 597 507 Foreign exchange losses 2,261 379 Other 191 344 Total non-operating expenses 3,050 1,231 Ordinary profit 10,019 23,474 Extraordinary income Gain on sale of non-current assets 15 11 Gain on sale of investment securities - 1,037 Gain on sale of shares of subsidiaries and associates 2,210 - Other 175 29 Total extraordinary income 2,402 1,077 Extraordinary losses Loss on sale of non-current assets 10 0 Loss on retirement of non-current assets 271 264 Provision for loss on sales of shares of subsidiaries and associates 19,700 - Loss on disaster 111 197 Other 220 136 Total extraordinary losses 20,313 598 Profit (loss) before income taxes (7,892) 23,953 Income taxes - current 3,555 7,560 Income taxes - deferred (6,034) (2) Total income taxes (2,479) 7,557 Profit (loss) (5,412) 16,395 Profit (loss) attributable to non-controlling interests 557 (428) Profit (loss) attributable to owners of parent (5,970) 16,824
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5 Quarterly Consolidated Statement of Comprehensive Income For the three months ended June 30, 2026 (Millions of yen) For the three months ended June 30, 2025 For the three months ended June 30, 2026 Profit (loss) (5,412) 16,395 Other comprehensive income Valuation difference on available-for-sale securities 204 (653) Deferred gains or losses on hedges 361 (2,094) Foreign currency translation adjustment (1,949) 2,259 Remeasurements of defined benefit plans, net of tax (0) (74) Share of other comprehensive income of entities accounted for using equity method (486) 2,207 Total other comprehensive income (1,870) 1,644 Comprehensive income (7,282) 18,040 Comprehensive income attributable to Comprehensive income attributable to owners of parent (7,885) 18,328 Comprehensive income attributable to non-controlling interests 602 (288)
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6 (3) Key notes related to Quarterly Consolidated Financial Statements Notes on going concern assumptions There are no pertinent items. Notes to Segment Information Information on amounts of net sales, profit or loss, by reported segments April 1,2025 through June 30, 2025 (Millions of yen) Reportable segment Adjustment ConsolidatedEngineered Materials Metals Other Businesses Total Sales Outside customers 69,485 55,582 46,976 172,043 (3,003) 169,040 Inter-segment 1,784 18,450 6,770 27,005 (27,005) － Total 71,269 74,033 53,746 199,049 (30,009) 169,040 Segment profit 10,491 3,329 (536) 13,285 (3,266) 10,019 (Notes) (a) Amounts of adjustment are as follows 1.Adjustments of sales to external customers are the difference mainly derived from the conversion process of sales of overseas subsidiaries to the Japanese currency. (The difference between the anticipated exchange rates at the time budgets were formulated and the average exchange rates during the year.) Adjustment to segment profit, which amounted to ¥(3,266) million, consists mainly of ¥(2,483) million for Company-wide costs that are not allocated to any reportable segments and ¥(720) million for adjustment of inventories. Company-wide costs consists mainly of general and administrative expenses and research expenses that is not allocated to any reportable segments. 2.Segment profit is adjusted to be consistent with ordinary income shown on the consolidated statement of income.
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7 April 1,2026 through June 30, 2026 (Millions of yen) Reportable segment Adjustment ConsolidatedEngineered Materials Metals Other Businesses Total Sales Outside customers 98,025 74,778 25,290 198,095 3,502 201,597 Inter-segment 2,532 23,498 12,908 38,938 (38,938) － Total 100,557 98,277 38,199 237,034 (35,436) 201,597 Segment profit 18,238 6,827 576 25,642 (2,167) 23,474 (Notes) (a) Amounts of adjustment are as follows 1.Adjustments of sales to external customers are the difference mainly derived from the conversion process of sales of overseas subsidiaries to the Japanese currency. (The difference between the anticipated exchange rates at the time budgets were formulated and the average exchange rates during the year.) Adjustment to segment profit, which amounted to ¥(2,167) million, consists mainly of ¥(3,450) million for Company-wide costs that are not allocated to any reportable segments and ¥504 million for adjustment of inventories. Company-wide costs consists mainly of general and administrative expenses and research expenses that is not allocated to any reportable segments. 2.Segment profit is adjusted to be consistent with ordinary income shown on the consolidated statement of income. Notes to Quarterly Consolidated Statements of Cash Flows The Company has not prepared the statements of cash flow for the first quarter ended June 30,2026. Depreciation related to the first quarter ended June 30,2026 (including amortization related to intangible assets) is as follows. (Millions of yen) First quarter ended June 30,2025 (April 1,2025- June 30,2025) First quarter ended June 30,2026 (April 1,2026- June 30,2026) Depreciation 7,523 6,887