Dear OSL HK Clients,

We are thrilled to announce the new listing of Sei (SEI). SEI trading is available on Pro trade for PI investors.

Listing Timeline:

• Deposit and Withdrawal Open: Opened

• Listing Time: Dec 16th, 2025, 7:30 (UTC+8) (Now Live)

• Trading Pairs(Pro Trade) : SEI / USD

• Supported User Type: Professional Investors Only

SEI Deposits and withdrawals will be available via the SEI EVM Network.

Note: For trading rules of new pair listing, please refer to "Trading Rules" for more information.

About Sei(SEI)

Sei is a high-performance Layer 1 blockchain that scales the EVM with parallelized execution, enabling faster transactions, low fees, and seamless smart contract deployment. Sei removes traditional blockchain bottlenecks while maintaining full Ethereum compatibility. The Giga upgrade delivered 50x improvements in EVM throughput, optimizing execution, consensus, and storage to push blockchain performance to web2 levels.

Learn more about SEI: Website | Whitepaper | Twitter(X)

Disclamier

This content is provided by OSL Digital Securities Limited (“OSLDS”) solely for informational purposes and does not constitute, nor shall it be construed as, an offer, solicitation, or recommendation to purchase, sell, or subscribe to any securities, financial instruments, products, or services. This content does not constitute legal, tax, accounting, or financial advice, and recipients are advised to obtain independent professional advice prior to making any decisions or taking any action. OSLDS makes no representations or warranties, express or implied, as to the accuracy, completeness, or reliability of the information contained herein and disclaims all liability for any losses or damages arising from its use. Where third-party data or information is referenced, OSLDS makes no representation or endorsement as to the accuracy, completeness, or reliability of such data. All opinions, estimates, and information are as of the date hereof and may be subject to change without notice.

About OSL Hong Kong As a subsidiary of the publicly listed OSL Group (HKEX: 863.HK), OSL Digital Securities is Hong Kong’s first and most established SFC-licensed and insured digital asset platform. Operating since 2018, the platform provides institutional-grade digital asset services to corporations, financial institutions, professional and retail investors. OSL Hong Kong delivers services across five core domains: OTC brokerage, Omnibus broker solutions, custody, wealth management, and retail services. The OTC brokerage services provide 24/7 high-liquidity crypto trading with fiat on/off-ramp services. Custody solutions feature client-asset segregated wallet management backed by US$1 billion insurance coverage. The wealth management suite offers crypto investments to traditional investors, including tokenised treasuries, RWAs, structured crypto products, and quant investment strategies. Retail services bring institution-grade security and crypto access to professional and retail investors.

As a pioneer in bridging traditional finance and the digital asset economy, OSL Group adheres to its core concept: Open, Secure, and Licensed, empowering the next generation of global financial infrastructure. In addition to Hong Kong, OSL Group expands operations under full regulatory compliance in Japan, Australia, Europe and beyond.