Notice Regarding Selected as a Constituent of the “JPX-Nikkei Index 400”

Japan Petroleum Exploration Co., Ltd. (JAPEX) has announced that it has been selected as a constituent of the "JPX-Nikkei Index 400" in FY2024, which are stock price indices computed by JPX Market Innovation & Research, Inc. and Nikkei Inc.

JPX-Nikkei Index 400 is stock price index composed of companies with high appeal for investors, meeting requirements of global investment standards, such as efficient use of capital and investor-focused management perspectives.

Selected from stocks primarily listed on the Prime, Standard, and Growth markets of the Tokyo Stock Exchange, 400 stocks are selected based on market capitalization, trading value, ROE, and other factors.

For more details about JPX Nikkei 400, please refer to the Japan Exchange Group's website below.

https://www.jpx.co.jp/markets/indices/jpx-nikkei400/index.html

JAPEX will continue to strive for sustainable growth in corporate value to meet our investors' expectations.