Polar Asset Management Partners Inc. Acquires 5.7% Stake in D Boral Acquisition I Corp

Polar Asset Management Partners Inc., an Ontario-based investment advisor, has filed a Schedule 13G regarding its holdings in D Boral Acquisition I Corp (DBCA). As of March 31, 2026, the filer reported a new position consisting of 1,750,000 Class A ordinary shares, representing a 5.7% ownership stake in the company. This filing marks an increase from a previous 0.0% holding, establishing Polar Asset Management Partners as a significant shareholder. The shares are held directly by the Polar Multi-Strategy Master Fund (PMSMF), a Cayman Islands exempted company for which Polar Asset Management Partners serves as the investment advisor. The reporting person maintains sole voting and dispositive power over all 1,750,000 shares. According to the certification, these securities were acquired in the ordinary course of business and not for the purpose of influencing or changing the control of the issuer. The filing was officially submitted on May 15, 2026, following the triggering event date at the end of the first quarter.