Jade Biosciences (JBIO) Proxy filing summary

Executive summary

• The 2026 Annual Meeting of Stockholders will be held virtually via live webcast on June 9, 2026, at 2:30 p.m. Pacific Time, following a time change from the originally scheduled morning session.

• The meeting is accessible only to registered stockholders who have a unique control number, with registration required by June 7, 2026.

• All other meeting details, including the record date of April 17, 2026, and proxy instructions, remain unchanged.

Voting matters and shareholder proposals

• Stockholders are encouraged to vote their shares in advance using the methods described in the proxy materials.

• Proxies already submitted remain valid; revocation instructions are provided in the proxy statement.

Board of directors and corporate governance

• The notice and proxy materials are issued by order of the Board of Directors, signed by the Chief Legal Officer and Corporate Secretary.