Shareholder Return and Dividend Information

Sumitomo Metal Mining’s approach

The Sumitomo Metal Mining Group recognizes appropriate distribution of profits to shareholders as one of our most important management issues.

Since the fiscal year ended March 31, 2010, the Company has paid a dividend that corresponds to its business performance, and from the fiscal year ended March 31, 2020, established the principle of a payout ratio of 35%. Nevertheless, due to the nature of the business, the Sumitomo Metal Mining Group’s business performance is affected by prices of non-ferrous metals, exchange rate fluctuations, and other factors. Accordingly, dividends from surplus based on a consolidated payout ratio change significantly. As part of the Company’s action to implement management that is conscious of cost of capital and stock price, from the year-end dividend for the fiscal year ended March 31, 2024, DOE^*1 was added as a minimum indicator to mitigate the impact on dividends if the Group’s business performance deteriorates due to market prices and other factors.

Regarding DOE as the minimum indicator, to avoid uncertainty resulting from changes in consolidated operating results and consolidated net assets during and at the end of each fiscal year, the DOE is to be based on consolidated net assets as of the end of the previous fiscal year, excluding items affected by exchange rate movements, etc^*2. This is to emphasize stability from the perspective of shareholders, and as a result the minimum indicator of DOE has been raised to 2.5%.

• *1DOE (dividend on equity ratio) = Annual total dividends / Shareholders’ equity
• *2Other components of equity (exchange differences on translation of foreign operations, financial assets measured at fair value through other comprehensive income, cash flow hedges)

Dividends

As of May 9, 2025

*Note: The above dividend forecast is based on current data available as of the time of this release. There for actual dividends may differ from this statement for various factors.

Dividend Fluctuations

SMM carried out the consolidation of shares at the ratio of 2 shares to 1 share on October 1, 2017. As the second quarter-end dividend for the fiscal year ending March 31, 2018 was paid based on the number of shares prior to the consolidation of shares, the second quarter-end dividend per share is shown in the amount prior to the consolidation of shares. The year-end dividend per share for the fiscal year ending March 31, 2018 is shown in the amount based on the consolidation of shares and the full-year dividend is shown as “dash” in the table above, as it would cause misunderstanding in summing up the amounts. The full-year dividend per share calculated on a post-consolidation of share basis is ¥100 for the year ended March 31, 2018.