X0306 4 2018-11-30 0 0000925528 HUDSON TECHNOLOGIES INC /NY HDSN 0001620724 Prouty Eric A C/O HUDSON TECHNOLOGIES PO BOX 1541, ONE BLUE HILL PLAZA PEARL RIVER NY 10965 1 0 0 0 Stock Option (Right to Buy) 1.09 2018-11-30 4 A 0 42553 0 A 2019-04-10 2021-11-30 Common Stock 42553 42553 D Options vest quarterly in four equal installments commencing with the 1st quarter 2019 and ending with the 4th quarter 2019, with vesting conditioned upon continued compliance with term loan financial covenants. Eric Prouty 2018-12-04