Polar Asset Management Partners Inc. Acquires 5.2% Stake in Cayson Acquisition Corp

Polar Asset Management Partners Inc., a Toronto-based investment advisor, has filed a Schedule 13G regarding its holdings in Cayson Acquisition Corp (CAPN). As of the event date on March 31, 2026, Polar Asset Management reported a new position consisting of 275,000 ordinary shares, representing a 5.2% ownership stake in the company. This filing marks an increase from a previous holding of zero shares. The shares are held directly by Polar Multi-Strategy Master Fund (PMSMF), for which Polar Asset Management serves as the investment advisor. The reporting person has sole voting and dispositive power over the entire 275,000 shares. The filing was made under Rule 13d-1(b), indicating that the securities were acquired in the ordinary course of business and not with the intent to influence or change the control of the issuer. The submission was signed on May 15, 2026, by Andrew Ma, Chief Compliance Officer of Polar Asset Management Partners Inc.