SEC Filing Summary

This filing details changes in beneficial ownership of BEST SPAC I Acquisition Corp. (BSAA) as of September 29, 2026. Claudius Tsang, through BEST SPAC I (Holdings) Corp., holds Class A ordinary shares and rights to receive Class A ordinary shares, with a disclaimer of beneficial ownership except for pecuniary interest. The Class B ordinary shares are convertible to Class A ordinary shares. The filing also notes a change in the Sponsor's directorship and ownership structure.