X0306 4 2016-08-05 0 0000925528 HUDSON TECHNOLOGIES INC /NY HDSN 0001010543 ZUGIBE KEVIN J PO BOX 754 PEARL RIVER NY 10965 1 1 0 0 Chairman, Chief Executive Off Common Stock 2016-08-05 4 S 0 60525 4.879 D 5079268 D Common Stock 2016-08-08 4 S 0 173200 4.778 D 4912993 D Common Stock 2016-08-09 4 S 0 366275 4.873 D 4539793 D Includes 1,112,300 shares which may be purchased pursuant to options. Price reported is average selling price. Selling price for all shares sold during the day ranged from $4.76 to $4.86 per share. Price reported is average selling price. Selling price for shares sold during the day ranged from $4.75 to $5.00 per share Kevin J. Zugibe 2016-08-09