Eisai Co., Ltd. announced that it has determined the terms and conditions for the issuance of its 8th, 9th and 10th series of unsecured straight bonds (with limited inter-bond pari passu clause) as outlined below. The bond issuance is intended to support Eisai s medium- to long-term growth investments by securing stable funding and maintaining financial flexibility, while further diversifying its financing sources. Eisai intends to use the proceeds from the offering for working capital, including research and development expenses for priority development products, investments in licensed-in products, and repayment of short-term debt.

The 8th Series of Eisai Co., Ltd. Unsecured Straight Bonds, the 9th Series of Eisai Co., Ltd. Unsecured Straight Bonds, and the 10th Series of Eisai Co., Ltd. Unsecured Straight Bonds are being issued with the following details: the maturity periods are 5 years for the 8th Series, 7 years for the 9th Series, and 10 years for the 10th Series. The issue amounts are JPY 20 billion for the 8th Series, JPY 10 billion for the 9th Series, and JPY 20 billion for the 10th Series. The denomination of each bond is JPY 100 million.

The interest rates are 2.226% per annum for the 8th Series, 2.614% per annum for the 9th Series, and 3.022% per annum for the 10th Series. The issue price for all three series is 100.00% of the principal amount. The redemption price is also 100.00% of the principal amount.

The maturity dates are June 10, 2031 for the 8th Series, June 10, 2033 for the 9th Series, and June 10, 2036 for the 10th Series. Interest payment dates are June 10 and December 10 of each year, with the initial interest payment date being December 10, 2026. The method of offering is public offering.

The pricing date is June 4, 2026, and the issue date is June 10, 2026.