Hudson Technologies, Inc.

Hartree Partners, Lp bought 118,549 shares of HDSN on 24 September. They now own 5,348,517 HDSN shares.

Hartree Partners, Lp bought 11,013 shares of HDSN on 23 September. They now own 5,229,968 HDSN shares.

Hartree Partners, Lp bought 2,502 shares of HDSN on 21 September. They now own 5,218,955 HDSN shares.

Hartree Partners, Lp bought 11,136 shares of HDSN on 16 September. They now own 5,216,453 HDSN shares.

Hartree Partners, Lp bought 5,317 shares of HDSN on 2 September. They now own 5,205,317 HDSN shares.

Hartree Partners, Lp bought 91,166 shares of HDSN on 25 August. They now own 5,200,000 HDSN shares.

Hartree Partners, Lp bought 9,446 shares of HDSN on 24 August. They now own 5,108,834 HDSN shares.

Hartree Partners, Lp bought 5,198 shares of HDSN on 12 August. They now own 5,099,388 HDSN shares.

Hartree Partners, Lp bought 52,104 shares of HDSN on 29 July. They now own 5,094,190 HDSN shares.

Hartree Partners, Lp bought 47,708 shares of HDSN on 21 July. They now own 5,042,086 HDSN shares.

Hartree Partners, Lp bought 17,842 shares of HDSN on 20 July. They now own 4,994,378 HDSN shares.

Hartree Partners, Lp bought 600 shares of HDSN on 7 July. They now own 4,976,536 HDSN shares.

Hartree Partners, Lp bought 4,634 shares of HDSN on 6 July. They now own 4,975,936 HDSN shares.

Hartree Partners, Lp bought 271,302 shares of HDSN on 2 July. They now own 4,971,302 HDSN shares.

Hartree Partners, Lp bought 288,111 shares of HDSN on 1 July. They now own 4,700,000 HDSN shares.

Hartree Partners, Lp bought 0 shares of HDSN on 30 June. They now own 4,207,100 HDSN shares.

Hartree Partners, Lp bought 204,789 shares of HDSN on 30 June. They now own 4,411,889 HDSN shares.

Feeler Jeffrey R bought 15,360 shares of HDSN on 17 June. They now own 15,360 HDSN shares.

Feeler Jeffrey R bought 3,219 shares of HDSN on 17 June. They now own 12,384 HDSN shares.

Prouty Eric A bought 21,186 shares of HDSN on 17 June. They now own 21,186 HDSN shares.

Mansy Loan Nguyen bought 21,186 shares of HDSN on 17 June. They now own 21,186 HDSN shares.

Bulgarino Nicole E bought 31,780 shares of HDSN on 17 June. They now own 31,780 HDSN shares.

Sheriff Alan bought 3,219 shares of HDSN on 17 June. They now own 12,484 HDSN shares.

Parrillo Richard bought 31,780 shares of HDSN on 17 June. They now own 31,780 HDSN shares.

Sheriff Alan bought 15,360 shares of HDSN on 17 June. They now own 15,360 HDSN shares.

Prouty Eric A bought 4,440 shares of HDSN on 17 June. They now own 158,292 HDSN shares.

Mansy Loan Nguyen bought 8,881 shares of HDSN on 17 June. They now own 34,476 HDSN shares.

Bertaux Brian J. bought 2,000 shares of HDSN on 19 May. They now own 2,000 HDSN shares.

Bulgarino Nicole E bought 550 shares of HDSN on 14 May. They now own 11,048 HDSN shares.

Mansy Loan Nguyen bought 3,600 shares of HDSN on 14 May. They now own 24,195 HDSN shares.

Mansy Loan Nguyen bought 1,400 shares of HDSN on 14 May. They now own 25,595 HDSN shares.

Parrillo Richard bought 1,400 shares of HDSN on 14 May. They now own 25,595 HDSN shares.

Parrillo Richard bought 3,600 shares of HDSN on 14 May. They now own 24,195 HDSN shares.

Feeler Jeffrey R bought 5,100 shares of HDSN on 14 May. They now own 9,165 HDSN shares.

Gaglione Kenneth bought 5,000 shares of HDSN on 13 May. They now own 5,000 HDSN shares.

Sheriff Alan bought 5,200 shares of HDSN on 13 May. They now own 9,265 HDSN shares.

Parrillo Richard bought 10,000 shares of HDSN on 13 May. They now own 195,746 HDSN shares.

Prouty Eric A bought 5,000 shares of HDSN on 13 May. They now own 153,852 HDSN shares.

Sheriff Alan bought 4,065 shares of HDSN on 10 April. They now own 4,065 HDSN shares.

Sheriff Alan bought 0 shares of HDSN on 10 April. They now own 0 HDSN shares.

Feeler Jeffrey R bought 4,065 shares of HDSN on 10 April. They now own 4,065 HDSN shares.

Feeler Jeffrey R bought 0 shares of HDSN on 10 April. They now own 0 HDSN shares.

Stoody Robert bought 0 shares of HDSN on 30 January. They now own 70,047 HDSN shares.

Stoody Robert bought 24,849 shares of HDSN on 30 January. They now own 0 HDSN shares.

Houghton Kathleen sold 47,619 shares of HDSN on 8 January. They now own 0 HDSN shares.

Houghton Kathleen bought 120,000 shares of HDSN on 8 January. They now own 161,163 HDSN shares.

Houghton Kathleen sold 120,000 shares of HDSN on 8 January. They now own 0 HDSN shares.

Houghton Kathleen bought 47,619 shares of HDSN on 8 January. They now own 163,909 HDSN shares.

Houghton Kathleen sold 21,797 shares of HDSN on 8 January. They now own 142,112 HDSN shares.

Houghton Kathleen bought 50,888 shares of HDSN on 8 January. They now own 193,000 HDSN shares.

Houghton Kathleen sold 50,888 shares of HDSN on 8 January. They now own 0 HDSN shares.

Houghton Kathleen sold 44,873 shares of HDSN on 8 January. They now own 116,290 HDSN shares.

Houghton Kathleen sold 34,382 shares of HDSN on 8 January. They now own 158,618 HDSN shares.

Coleman Brian F sold 484,616 shares of HDSN on 5 December. They now own 1,944,312 HDSN shares.

Coleman Brian F sold 484,616 shares of HDSN on 5 December. They now own 426,968 HDSN shares.

Gaglione Kenneth bought 216,309 shares of HDSN on 24 November. They now own 216,309 HDSN shares.

Gaglione Kenneth bought 0 shares of HDSN on 24 November. They now own 37,504 HDSN shares.

Abbatecola Vincent P bought 3,500 shares of HDSN on 17 November. They now own 169,748 HDSN shares.

Abbatecola Vincent P bought 4,744 shares of HDSN on 24 September. They now own 169,767 HDSN shares.

Abbatecola Vincent P sold 4,744 shares of HDSN on 24 September. They now own 0 HDSN shares.

Abbatecola Vincent P sold 3,519 shares of HDSN on 24 September. They now own 166,248 HDSN shares.

Prouty Eric A sold 4,744 shares of HDSN on 31 July. They now own 0 HDSN shares.

Prouty Eric A sold 3,713 shares of HDSN on 31 July. They now own 148,852 HDSN shares.

Prouty Eric A bought 4,744 shares of HDSN on 31 July. They now own 152,565 HDSN shares.

Abbatecola Vincent P bought 13,698 shares of HDSN on 18 June. They now own 13,698 HDSN shares.

Prouty Eric A bought 13,698 shares of HDSN on 18 June. They now own 13,698 HDSN shares.

Abbatecola Vincent P bought 3,182 shares of HDSN on 18 June. They now own 165,023 HDSN shares.

Mansy Loan Nguyen bought 13,698 shares of HDSN on 18 June. They now own 13,698 HDSN shares.

Prouty Eric A bought 3,182 shares of HDSN on 18 June. They now own 147,821 HDSN shares.

Parrillo Richard bought 13,698 shares of HDSN on 18 June. They now own 13,698 HDSN shares.

Bulgarino Nicole E bought 3,182 shares of HDSN on 18 June. They now own 10,498 HDSN shares.

Mansy Loan Nguyen bought 6,365 shares of HDSN on 18 June. They now own 20,595 HDSN shares.

Bulgarino Nicole E bought 13,698 shares of HDSN on 18 June. They now own 13,698 HDSN shares.

Parrillo Richard bought 3,182 shares of HDSN on 18 June. They now own 185,746 HDSN shares.

Bertaux Brian J. bought 55,109 shares of HDSN on 13 March. They now own 55,109 HDSN shares.

Coleman Brian F bought 140,813 shares of HDSN on 13 March. They now own 140,813 HDSN shares.

Houghton Kathleen bought 72,477 shares of HDSN on 13 March. They now own 72,477 HDSN shares.

Abbatecola Vincent P bought 2,500 shares of HDSN on 7 November. They now own 161,841 HDSN shares.

Bertaux Brian J. sold 0 shares of HDSN on 30 July. They now own 0 HDSN shares.

Mansy Loan Nguyen bought 5,593 shares of HDSN on 19 June. They now own 14,230 HDSN shares.

Abbatecola Vincent P bought 25,362 shares of HDSN on 19 June. They now own 25,362 HDSN shares.

Bulgarino Nicole E bought 14,493 shares of HDSN on 19 June. They now own 14,493 HDSN shares.

Parrillo Richard bought 2,796 shares of HDSN on 19 June. They now own 182,564 HDSN shares.

Prouty Eric A bought 21,739 shares of HDSN on 19 June. They now own 21,739 HDSN shares.

Mansy Loan Nguyen bought 14,493 shares of HDSN on 19 June. They now own 14,493 HDSN shares.

Bulgarino Nicole E bought 3,915 shares of HDSN on 19 June. They now own 7,316 HDSN shares.

Parrillo Richard sold 14,493 shares of HDSN on 19 June. They now own 14,493 HDSN shares.

Abbatecola Vincent P sold 10,000 shares of HDSN on 14 June. They now own 159,341 HDSN shares.

Abbatecola Vincent P sold 3,055 shares of HDSN on 12 June. They now own 169,341 HDSN shares.

Abbatecola Vincent P sold 8,276 shares of HDSN on 12 June. They now own 0 HDSN shares.

Abbatecola Vincent P bought 8,276 shares of HDSN on 12 June. They now own 172,396 HDSN shares.

Coleman Brian F bought 20,067 shares of HDSN on 27 February. They now own 20,067 HDSN shares.

Houghton Kathleen bought 9,444 shares of HDSN on 27 February. They now own 9,444 HDSN shares.

Stoody Robert bought 5,902 shares of HDSN on 27 February. They now own 0 HDSN shares.

Krishnamurti Nat bought 7,378 shares of HDSN on 27 February. They now own 7,378 HDSN shares.

Parrillo Richard sold 51 shares of HDSN on 14 December. They now own 184,922 HDSN shares.

Parrillo Richard sold 55 shares of HDSN on 14 December. They now own 197,659 HDSN shares.

Parrillo Richard sold 51 shares of HDSN on 14 December. They now own 184,871 HDSN shares.

Parrillo Richard sold 12,686 shares of HDSN on 14 December. They now own 184,973 HDSN shares.

Parrillo Richard sold 2,259 shares of HDSN on 14 December. They now own 197,714 HDSN shares.

Parrillo Richard sold 5,103 shares of HDSN on 14 December. They now own 179,768 HDSN shares.

Parrillo Richard sold 300 shares of HDSN on 13 December. They now own 201,107 HDSN shares.

Parrillo Richard sold 1,000 shares of HDSN on 13 December. They now own 199,973 HDSN shares.

Parrillo Richard sold 11,100 shares of HDSN on 13 December. They now own 211,272 HDSN shares.

Parrillo Richard sold 134 shares of HDSN on 13 December. They now own 200,973 HDSN shares.

Parrillo Richard sold 9,865 shares of HDSN on 13 December. They now own 201,407 HDSN shares.

Parrillo Richard sold 10,000 shares of HDSN on 12 December. They now own 242,372 HDSN shares.

Parrillo Richard sold 10,000 shares of HDSN on 12 December. They now own 222,372 HDSN shares.

Parrillo Richard sold 10,000 shares of HDSN on 12 December. They now own 232,372 HDSN shares.

Abbatecola Vincent P sold 3,063 shares of HDSN on 25 October. They now own 164,120 HDSN shares.

Abbatecola Vincent P sold 21,118 shares of HDSN on 25 October. They now own 0 HDSN shares.

Abbatecola Vincent P bought 21,118 shares of HDSN on 25 October. They now own 167,183 HDSN shares.

Gaglione Kenneth sold 33,379 shares of HDSN on 12 September. They now own 33,378 HDSN shares.

Gaglione Kenneth sold 90,135 shares of HDSN on 12 September. They now own 0 HDSN shares.

Gaglione Kenneth bought 23,810 shares of HDSN on 12 September. They now own 81,772 HDSN shares.

Gaglione Kenneth bought 23,902 shares of HDSN on 12 September. They now own 93,530 HDSN shares.

Gaglione Kenneth sold 23,810 shares of HDSN on 12 September. They now own 0 HDSN shares.

Gaglione Kenneth sold 12,144 shares of HDSN on 12 September. They now own 69,628 HDSN shares.

Gaglione Kenneth bought 90,135 shares of HDSN on 12 September. They now own 102,736 HDSN shares.

Gaglione Kenneth sold 14,431 shares of HDSN on 12 September. They now own 79,099 HDSN shares.

Gaglione Kenneth sold 44,774 shares of HDSN on 12 September. They now own 57,962 HDSN shares.

Gaglione Kenneth sold 30,124 shares of HDSN on 12 September. They now own 82,354 HDSN shares.

Gaglione Kenneth sold 23,902 shares of HDSN on 12 September. They now own 0 HDSN shares.

Gaglione Kenneth bought 33,379 shares of HDSN on 12 September. They now own 112,478 HDSN shares.

Abbatecola Vincent P sold 2,252 shares of HDSN on 19 July. They now own 146,065 HDSN shares.

Abbatecola Vincent P sold 21,739 shares of HDSN on 19 July. They now own 0 HDSN shares.

Parrillo Richard bought 21,739 shares of HDSN on 19 July. They now own 254,624 HDSN shares.

Abbatecola Vincent P bought 21,739 shares of HDSN on 19 July. They now own 148,317 HDSN shares.

Parrillo Richard sold 2,252 shares of HDSN on 19 July. They now own 252,372 HDSN shares.

Parrillo Richard sold 21,739 shares of HDSN on 19 July. They now own 0 HDSN shares.

Prouty Eric A bought 2,618 shares of HDSN on 14 June. They now own 144,639 HDSN shares.

Parrillo Richard bought 17,606 shares of HDSN on 14 June. They now own 17,606 HDSN shares.

Prouty Eric A bought 11,737 shares of HDSN on 14 June. They now own 11,737 HDSN shares.

Abbatecola Vincent P bought 20,540 shares of HDSN on 14 June. They now own 20,540 HDSN shares.

Prouty Eric A sold 20,000 shares of HDSN on 14 June. They now own 142,021 HDSN shares.

Mansy Loan Nguyen bought 5,236 shares of HDSN on 14 June. They now own 8,637 HDSN shares.

Bulgarino Nicole E bought 21,127 shares of HDSN on 14 June. They now own 21,127 HDSN shares.

Mansy Loan Nguyen bought 11,737 shares of HDSN on 14 June. They now own 11,737 HDSN shares.

Mandracchia Stephen P bought 17,606 shares of HDSN on 14 June. They now own 17,606 HDSN shares.

Prouty Eric A sold 43,478 shares of HDSN on 2 June. They now own 0 HDSN shares.

Prouty Eric A sold 4,626 shares of HDSN on 2 June. They now own 162,021 HDSN shares.

Prouty Eric A bought 43,478 shares of HDSN on 2 June. They now own 166,647 HDSN shares.

Abbatecola Vincent P bought 1,000 shares of HDSN on 14 March. They now own 126,578 HDSN shares.

Gaglione Kenneth bought 66,757 shares of HDSN on 1 March. They now own 66,757 HDSN shares.

Coleman Brian F bought 234,332 shares of HDSN on 1 March. They now own 234,332 HDSN shares.

Stoody Robert bought 38,147 shares of HDSN on 1 March. They now own 0 HDSN shares.

Krishnamurti Nat bought 61,308 shares of HDSN on 1 March. They now own 61,308 HDSN shares.

Gaglione Kenneth bought 33,378 shares of HDSN on 1 March. They now own 0 HDSN shares.

Houghton Kathleen bought 66,757 shares of HDSN on 1 March. They now own 66,757 HDSN shares.

Mandracchia Stephen P sold 10,000 shares of HDSN on 6 January. They now own 396,756 HDSN shares.

Gaglione Kenneth sold 14,508 shares of HDSN on 13 December. They now own 12,601 HDSN shares.

Gaglione Kenneth sold 23,902 shares of HDSN on 13 December. They now own 23,902 HDSN shares.

Gaglione Kenneth bought 23,902 shares of HDSN on 13 December. They now own 27,109 HDSN shares.

Gaglione Kenneth sold 19,000 shares of HDSN on 12 December. They now own 3,207 HDSN shares.

Krishnamurti Nat sold 46,194 shares of HDSN on 9 November. They now own 25,207 HDSN shares.

Krishnamurti Nat sold 45,000 shares of HDSN on 8 November. They now own 71,401 HDSN shares.

Krishnamurti Nat sold 175,000 shares of HDSN on 8 November. They now own 0 HDSN shares.

Krishnamurti Nat bought 175,000 shares of HDSN on 8 November. They now own 200,207 HDSN shares.

Krishnamurti Nat sold 83,806 shares of HDSN on 8 November. They now own 116,401 HDSN shares.

Parrillo Richard bought 2,143 shares of HDSN on 30 September. They now own 232,885 HDSN shares.

Mandracchia Stephen P bought 4,744 shares of HDSN on 30 September. They now own 4,744 HDSN shares.

Mansy Loan Nguyen bought 3,401 shares of HDSN on 30 September. They now own 3,401 HDSN shares.

Abbatecola Vincent P bought 4,744 shares of HDSN on 30 September. They now own 4,744 HDSN shares.

Prouty Eric A bought 4,744 shares of HDSN on 30 September. They now own 4,744 HDSN shares.

Bulgarino Nicole E bought 3,401 shares of HDSN on 30 September. They now own 3,401 HDSN shares.

Bulgarino Nicole E sold 0 shares of HDSN on 30 September. They now own 0 HDSN shares.

Mandracchia Stephen P sold 1,000 shares of HDSN on 8 August. They now own 406,756 HDSN shares.

Morch Otto C sold 40,000 shares of HDSN on 5 July. They now own 0 HDSN shares.

Morch Otto C bought 40,000 shares of HDSN on 5 July. They now own 87,366 HDSN shares.

Morch Otto C sold 40,000 shares of HDSN on 5 July. They now own 0 HDSN shares.

Morch Otto C bought 10,281 shares of HDSN on 5 July. They now own 47,366 HDSN shares.

Morch Otto C sold 10,281 shares of HDSN on 5 July. They now own 0 HDSN shares.

Abbatecola Vincent P sold 20,000 shares of HDSN on 15 June. They now own 125,578 HDSN shares.

Prouty Eric A bought 2,726 shares of HDSN on 9 June. They now own 2,726 HDSN shares.

Morch Otto C bought 2,726 shares of HDSN on 9 June. They now own 2,726 HDSN shares.

Prouty Eric A bought 2,726 shares of HDSN on 9 June. They now own 2,726 HDSN shares.

Morch Otto C bought 2,726 shares of HDSN on 9 June. They now own 2,726 HDSN shares.

Abbatecola Vincent P bought 5,452 shares of HDSN on 9 June. They now own 5,452 HDSN shares.

Mandracchia Stephen P bought 2,726 shares of HDSN on 9 June. They now own 2,726 HDSN shares.

Parrillo Richard bought 2,726 shares of HDSN on 9 June. They now own 2,726 HDSN shares.

Mandracchia Stephen P bought 2,726 shares of HDSN on 9 June. They now own 2,726 HDSN shares.

Abbatecola Vincent P bought 5,452 shares of HDSN on 9 June. They now own 5,452 HDSN shares.

Abbatecola Vincent P bought 10,281 shares of HDSN on 3 June. They now own 165,578 HDSN shares.

Abbatecola Vincent P sold 10,281 shares of HDSN on 3 June. They now own 0 HDSN shares.

Abbatecola Vincent P sold 10,281 shares of HDSN on 3 June. They now own 0 HDSN shares.

Abbatecola Vincent P bought 25,000 shares of HDSN on 3 June. They now own 155,297 HDSN shares.

Abbatecola Vincent P sold 20,000 shares of HDSN on 3 June. They now own 145,578 HDSN shares.

Abbatecola Vincent P sold 25,000 shares of HDSN on 3 June. They now own 0 HDSN shares.

Mandracchia Stephen P sold 55,785 shares of HDSN on 31 May. They now own 407,756 HDSN shares.

Mandracchia Stephen P sold 27,892 shares of HDSN on 31 May. They now own 93,000 HDSN shares.

Mandracchia Stephen P sold 22,108 shares of HDSN on 27 May. They now own 120,892 HDSN shares.

Mandracchia Stephen P sold 44,215 shares of HDSN on 27 May. They now own 463,541 HDSN shares.

Mandracchia Stephen P sold 14,000 shares of HDSN on 17 May. They now own 507,756 HDSN shares.

Prouty Eric A sold 75,000 shares of HDSN on 9 May. They now own 123,169 HDSN shares.

Prouty Eric A sold 5,339 shares of HDSN on 6 May. They now own 198,169 HDSN shares.

Prouty Eric A sold 80,000 shares of HDSN on 6 May. They now own 0 HDSN shares.

Prouty Eric A bought 80,000 shares of HDSN on 6 May. They now own 203,508 HDSN shares.

Mandracchia Stephen P sold 10,000 shares of HDSN on 18 April. They now own 521,756 HDSN shares.

Parrillo Richard sold 8,038 shares of HDSN on 31 March. They now own 229,800 HDSN shares.

Parrillo Richard sold 80,000 shares of HDSN on 31 March. They now own 0 HDSN shares.