Nitto Boseki Co., Ltd.TSE: 3110

Notice of Revision to Dividend Forecast

· Issued by Nitto Boseki Co., Ltd.

Press Release

November 6, 2025

Company name: Nittobo (registered as Nitto Boseki Co., Ltd.) Representative: Hiroyuki Tada,

Director, Representative and Chief Executive Officer (Securities Code: 3110, TSE Prime Market)

Contact: Hiroki Kajikawa, Senior Executive Officer (Tel: +81-3-4582-5040)

Notice of Revision to Dividend Forecast

Nittobo (the “Company”) hereby provides notice as follows of the year-end dividend forecast for the fiscal year ending March 31, 2026, which had not been decided at the time of the announcement of “Consolidated

Financial Results for the First Three Months of the Fiscal Year Ending March 31, 2026 ” on August 1, 2025.
  1. Revision to dividend forecast

    Annual dividend (yen)

    Second quarter-end

    Fiscal year-end

    Total

    Previous forecast (Announced on August 1,

    2025)

    Yen

    27.50

    Yen

    —

    Yen

    —

    Revised forecast

    —

    86.50

    114.00

    Actual

    27.50

    —

    —

    Previous year actual

    (fiscal year ended March 31, 2025)

    27.50

    78.50

    106.00

  2. Reasons for revision to dividend forecast

The Company’s basic policy is to maintain financial soundness while investing for sustainable growth, and the dividend policy for shareholders has been designated one of the most important issues facing management. The Medium-Term Management Plan (FY2024-2027) sets out a basic policy of targeting a dividend of not less than 55 yen per share and a consolidated dividend payout ratio of 30% of steady earnings.

In accordance with this basic policy, the decision to announce the dividend forecast for the fiscal year ending March 31, 2026, was taken after calculations based on a comprehensive assessment of earnings forecasts for FY2025 and other factors. Moreover, this was calculated after excluding the impact of the

extraordinary income arising from the gain on sale of non-current assets announced today, pursuant to the basic policy of a consolidated dividend payout ratio of 30% of steady earnings.

However, actual results and other outcomes may vary considerably from forecasts depending on future trends. If a significant event requiring disclosure occurs, the Company will promptly provide notification of the impact on business results.

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