CoinTradeStake Launches Japan's First Staking Service for New Crypto Asset Polygon (POL)

Mercury Inc. (Headquarters: Shibuya-ku, Tokyo; President: Satoshi Toki; hereinafter "the Company") is pleased to announce that it will begin staking services for Polygon (POL) on April 22, 2026, through its staking service "CoinTradeStake." This marks the first time POL staking has been handled by a domestic cryptocurrency exchange operator in Japan. With this addition, the cryptocurrency exchange "CoinTrade" now handles 25 types of crypto assets, and "CoinTradeStake" allows for the staking of 14 different crypto assets. *According to company research as of April 22, 2026, targeting staking services of domestic cryptocurrency exchange operators. Polygon (POL) is a Layer 2 network on the Ethereum (ETH) blockchain. On September 3, 2024, it underwent a major upgrade where MATIC tokens were replaced by the new POL tokens, allowing for more flexible issuance. POL tokens serve as the native token for the primary Polygon PoS chain (used for gas and staking) and are expected to expand to other chains in the future. In the initial stage, POL is the main token for the Polygon PoS network. In the next stage, it is planned to play a crucial role in a system called "AggLayer," which aggregates multiple blockchains. ■ "CoinTradeStake" Supported Crypto Assets "Polygon (POL)" Service URL: https://coin-trade.cc/services/stake/ ★ Polygon (POL) Staking Plan Plans are based on the Annual Percentage Rate (APR). *The stated annual rates are estimates. *The rates may fluctuate depending on network conditions and are not guaranteed. https://coin-trade.cc/services/stake/ The Company completed its registration as a cryptocurrency exchange operator on February 17, 2021, and launched the "CoinTrade" exchange service on March 15, 2021. "CoinTrade" is an exchange service that offers a simple trade view, intuitive interface, and world-class security provided by a group listed on the TSE Prime Market, ensuring a safe and comfortable trading experience. Furthermore, the Company launched "CoinTradeStake" on July 28, 2022, and "CoinTrade Lending" on July 4, 2024. We are committed to developing new services in the crypto asset and blockchain fields to continue providing services loved by our customers. [Mercury Company Profile] Company Name: Mercury Inc. Location: 12F Shibuya Infoss Tower, 20-1 Sakuragaokacho, Shibuya-ku, Tokyo Representative: President Satoshi Toki Registration Number: Crypto Asset Exchange Operator (Kanto Local Finance Bureau Director No. 00025) Established: September 2017 Capital: 180 million yen (as of the end of March 2026) Member Associations: Japan Virtual and Crypto assets Exchange Association (JVCEA) Japan Crypto Asset Business Association (JCBA) Blockchain Collaboration Council (BCCC) Japan Blockchain Association (JBA) JPCrypto-ISAC Website: https://coin-trade.cc/ *The information in this press release is current as of the date of announcement and is subject to change due to the passage of time or various subsequent events. Products handled by "CoinTrade" may result in losses due to price fluctuations. This press release is not intended as a solicitation for investment or a recommendation to buy or sell crypto assets.