SEC Filing Summary

Hartree Partners, LP, a 10% owner of HUDSON TECHNOLOGIES INC /NY, reported the acquisition of 2,502 shares of common stock on September 21, 2026, at a weighted average price of $5.0988 per share. Subsequently, on September 23, 2026, they acquired an additional 11,013 shares at $5.10 per share. Following these transactions, Hartree Partners, LP holds a total of 5,229,968 shares. The reporting person disclaims beneficial ownership except to the extent of their pecuniary interest. Full details regarding the purchase prices within the reported range are available upon request from the issuer, any security holder, or the SEC staff.