Initial Statement of Beneficial Ownership

This filing is an initial statement of beneficial ownership for HUDSON TECHNOLOGIES INC /NY (HDSN). Hartree Partners, LP, a 10% owner, acquired 4,207,100 shares of common stock, par value $0.01. The filing is dated June 30, 2026, with the report filed on July 2, 2026. The reporting person disclaims beneficial ownership except to the extent of their pecuniary interest.