Hudson Technologies Inc (HDSN)

Hudson Technologies witnessed significant buying activity recently, with Hartree Partners, LP executing thirteen consecutive acquisitions totaling over 5.8 million dollars. These transactions occurred following an August results financiers miss. Despite a 10.2% decline in share value over ninety days, no selling was reported by insiders during this period.
Ticker: HDSN Exchange: NAS


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Insider trades have triggered activity signals for Hudson Technologies Inc. Upgrade to see score, net flow, insiders and the full signal context.

Top insiders
Trades
Abbreviations B: Buy, S: Sell, PP: Planned purchase, PlS: Planned sale, PrS: Proposed sale, O: Option / Other
Hartree Partners, LP Large shareholder
Transaction date
Purchase
Price
350.80
Quantity 48,877 +41.3%
Value US$1,826,714
Hartree Partners, LP Large shareholder
Transaction date
Purchase
Price
327.22
Quantity 77,558 -42.7%
Value US$366,796
Hartree Partners, LP Large shareholder
Transaction date
Purchase
Price
28.73
Quantity 62,018 +18.7%
Value US$4,935,408
Hartree Partners, LP Large shareholder
Transaction date
Purchase
Price
5.10
Quantity 1,000 +0.1%
Value US$100,000
Hartree Partners, LP Large shareholder
Transaction date
Purchase
Price
5.50
Quantity 91,166 +1.8%
Value US$501,094
Hartree Partners, LP Large shareholder
Transaction date
Purchase
Price
5.50
Quantity 9,446 +0.2%
Value US$51,953
Hartree Partners, LP Large shareholder
Transaction date
Purchase
Price
5.50
Quantity 5,198 +0.1%
Value US$28,589
Hartree Partners, LP Large shareholder
Transaction date
Purchase
Price
5.99
Quantity 52,104 +1.0%
Value US$312,103
Hartree Partners, LP Large shareholder
Transaction date
Purchase
Price
5.99
Quantity 47,708 +1.0%
Value US$285,742
Hartree Partners, LP Large shareholder
Transaction date
Purchase
Price
5.99
Quantity 17,842 +0.4%
Value US$106,859
Hartree Partners, LP Large shareholder
Transaction date
Purchase
Price
5.99
Quantity 600 +0.0%
Value US$3,594
Hartree Partners, LP Large shareholder
Transaction date
Purchase
Price
5.99
Quantity 4,634 +0.1%
Value US$27,758
Hartree Partners, LP Large shareholder
Transaction date
Purchase
Price
5.97
Quantity 271,302 +5.8%
Value US$1,619,212
Hartree Partners, LP Large shareholder
Transaction date
Purchase
Price
5.88
Quantity 288,111 +6.5%
Value US$1,695,101
Hartree Partners, LP Large shareholder
Transaction date
Purchase
Price
5.68
Quantity 204,789 +4.9%
Value US$1,162,894
3.1
Bertaux Brian J. Chief Financial Officer Officer
Transaction date
Purchase
Price
4.87
Quantity 2,000 +inf%
Value US$9,740
3.0
Mansy Loan Nguyen Non-Executive Director
Transaction date
Purchase
Price
4.97
Quantity 1,400 +5.8%
Value US$6,958
3.0
Mansy Loan Nguyen Non-Executive Director
Transaction date
Purchase
Price
4.96
Quantity 3,600 +17.5%
Value US$17,856
3.2
Parrillo Richard Non-Executive Director
Transaction date
Purchase
Price
4.97
Quantity 1,400 +5.8%
Value US$6,958
3.2
Parrillo Richard Non-Executive Director
Transaction date
Purchase
Price
4.96
Quantity 3,600 +17.5%
Value US$17,856
3.0
Bulgarino Nicole E Non-Executive Director
Transaction date
Purchase
Price
4.85
Quantity 550 +5.2%
Value US$2,665
3.5
Feeler Jeffrey R Non-Executive Director
Transaction date
Purchase
Price
4.92
Quantity 5,100 +125.5%
Value US$25,092
3.7
Gaglione Kenneth President and CEO Executive Director
Transaction date
Purchase
Price
4.90
Quantity 5,000 +inf%
Value US$24,475
3.1
Sheriff Alan Non-Executive Director
Transaction date
Purchase
Price
4.88
Quantity 5,200 +127.9%
Value US$25,350
2.8
Prouty Eric A Non-Executive Director
Transaction date
Purchase
Price
4.84
Quantity 5,000 +3.4%
Value US$24,200
3.0
COLEMAN BRIAN F Non-Executive Director
Transaction date
Sale
Price
7.40
Quantity 484,616 -20.0%
Value US$3,588,097
3.0
ABBATECOLA VINCENT P Non-Executive Director
Transaction date
Purchase
Price
6.79
Quantity 3,500 +2.1%
Value US$23,748
3.0
ABBATECOLA VINCENT P Non-Executive Director
Transaction date
Purchase
Price
5.98
Quantity 2,500 +1.6%
Value US$14,948
3.0
ABBATECOLA VINCENT P Non-Executive Director
Transaction date
Sale
Price
9.20
Quantity 10,000 -5.9%
Value US$92,000
3.2
Parrillo Richard Non-Executive Director
Transaction date
Sale
Price
13.25
Quantity 5,103 -2.8%
Value US$67,615
3.2
Parrillo Richard Non-Executive Director
Transaction date
Sale
Price
13.26
Quantity 51 -0.0%
Value US$676
3.2
Parrillo Richard Non-Executive Director
Transaction date
Sale
Price
13.27
Quantity 51 -0.0%
Value US$677
3.2
Parrillo Richard Non-Executive Director
Transaction date
Sale
Price
13.30
Quantity 12,686 -6.4%
Value US$168,724
3.2
Parrillo Richard Non-Executive Director
Transaction date
Sale
Price
13.32
Quantity 55 -0.0%
Value US$733
3.2
Parrillo Richard Non-Executive Director
Transaction date
Sale
Price
13.31
Quantity 2,259 -1.1%
Value US$30,067
3.2
Parrillo Richard Non-Executive Director
Transaction date
Sale
Price
12.91
Quantity 1,000 -0.5%
Value US$12,910
3.2
Parrillo Richard Non-Executive Director
Transaction date
Sale
Price
12.92
Quantity 134 -0.1%
Value US$1,731
3.2
Parrillo Richard Non-Executive Director
Transaction date
Sale
Price
12.96
Quantity 300 -0.1%
Value US$3,888
3.2
Parrillo Richard Non-Executive Director
Transaction date
Sale
Price
12.91
Quantity 9,865 -4.7%
Value US$127,357
3.2
Parrillo Richard Non-Executive Director
Transaction date
Sale
Price
12.95
Quantity 11,100 -5.0%
Value US$143,745
3.2
Parrillo Richard Non-Executive Director
Transaction date
Sale
Price
12.85
Quantity 10,000 -4.3%
Value US$128,500
3.2
Parrillo Richard Non-Executive Director
Transaction date
Sale
Price
12.95
Quantity 10,000 -4.1%
Value US$129,500
3.2
Parrillo Richard Non-Executive Director
Transaction date
Sale
Price
12.75
Quantity 10,000 -4.0%
Value US$127,500
2.8
Prouty Eric A Non-Executive Director
Transaction date
Sale
Price
9.56
Quantity 20,000 -12.3%
Value US$191,200
2.8
Prouty Eric A Director Non-Executive Director
Transaction date
Proposed sale
Price
9.35
Quantity 20,000
Value US$187,000
3.0
ABBATECOLA VINCENT P Non-Executive Director
Transaction date
Purchase
Price
8.27
Quantity 1,000 +0.8%
Value US$8,270
3.7
Gaglione Kenneth VP-Operations Officer
Transaction date
Sale
Price
11.53
Quantity 19,000 -85.6%
Value US$219,070
2.6
Krishnamurti Nat CFO Officer
Transaction date
Sale
Price
10.13
Quantity 46,194 -64.7%
Value US$467,945
2.6
Krishnamurti Nat CFO Officer
Transaction date
Sale
Price
10.66
Quantity 45,000 -38.7%
Value US$479,700
3.0
ABBATECOLA VINCENT P Non-Executive Director
Transaction date
Sale
Price
9.75
Quantity 20,000 -13.7%
Value US$194,920
3.0
ABBATECOLA VINCENT P Non-Executive Director
Transaction date
Sale
Price
9.79
Quantity 20,000 -12.1%
Value US$195,816
2.7
MANDRACCHIA STEPHEN P Non-Executive Director
Transaction date
Sale
Price
9.70
Quantity 55,785 -12.0%
Value US$541,114
2.7
MANDRACCHIA STEPHEN P Non-Executive Director
Transaction date
Sale
Price
9.70
Quantity 27,892 -23.1%
Value US$270,552
2.7
MANDRACCHIA STEPHEN P Non-Executive Director
Transaction date
Sale
Price
9.73
Quantity 44,215 -8.7%
Value US$430,137
2.7
MANDRACCHIA STEPHEN P Non-Executive Director
Transaction date
Sale
Price
9.73
Quantity 22,108 -15.5%
Value US$215,073
2.8
Prouty Eric A Non-Executive Director
Transaction date
Sale
Price
9.00
Quantity 75,000 -37.8%
Value US$675,000
2.7
MANDRACCHIA STEPHEN P Non-Executive Director
Transaction date
Sale
Price
5.78
Quantity 100,000 -15.8%
Value US$578,000
2.7
MANDRACCHIA STEPHEN P Non-Executive Director
Transaction date
Sale
Price
5.75
Quantity 100,000 -41.2%
Value US$575,000
3.0
ABBATECOLA VINCENT P Non-Executive Director
Transaction date
Sale
Price
3.76
Quantity 10,000 -7.1%
Value US$37,590
3.0
ABBATECOLA VINCENT P Non-Executive Director
Transaction date
Sale
Price
3.84
Quantity 23,000 -14.1%
Value US$88,366
3.0
ABBATECOLA VINCENT P Non-Executive Director
Transaction date
Sale
Price
4.04
Quantity 35,320 -17.8%
Value US$142,799
2.7
MANDRACCHIA STEPHEN P Non-Executive Director
Transaction date
Sale
Price
4.67
Quantity 7,900 -1.2%
Value US$36,893
2.7
MANDRACCHIA STEPHEN P Non-Executive Director
Transaction date
Sale
Price
4.70
Quantity 7,900 -3.1%
Value US$37,154
2.7
MANDRACCHIA STEPHEN P Non-Executive Director
Transaction date
Sale
Price
4.71
Quantity 92,100 -12.3%
Value US$433,791
2.7
MANDRACCHIA STEPHEN P Non-Executive Director
Transaction date
Sale
Price
4.71
Quantity 92,100 -26.9%
Value US$433,791
2.6
Krishnamurti Nat CFO Officer
Transaction date
Sale
Price
4.76
Quantity 200,000 -88.8%
Value US$952,000
1.0
Houghton Kathleen VP - Sales and Marketing Officer
Transaction date
Sale
Price
2.89
Quantity 9,100 -18.5%
Value US$26,299
1.0
Houghton Kathleen VP - Sales and Marketing Officer
Transaction date
Sale
Price
2.90
Quantity 200 -0.4%
Value US$579
1.0
Houghton Kathleen VP - Sales and Marketing Officer
Transaction date
Sale
Price
2.90
Quantity 700 -1.4%
Value US$2,030
1.0
Houghton Kathleen VP - Sales and Marketing Officer
Transaction date
Sale
Price
2.92
Quantity 2,015 -3.9%
Value US$5,884
1.0
Houghton Kathleen VP - Sales and Marketing Officer
Transaction date
Sale
Price
2.93
Quantity 100 -0.2%
Value US$293
1.0
Houghton Kathleen VP - Sales and Marketing Officer
Transaction date
Sale
Price
2.93
Quantity 1,000 -1.9%
Value US$2,930
1.0
Houghton Kathleen VP - Sales and Marketing Officer
Transaction date
Sale
Price
2.93
Quantity 200 -0.4%
Value US$586
0.7
MORCH OTTO C Non-Executive Director
Transaction date
Sale
Price
2.95
Quantity 13,262 -26.3%
Value US$39,183
1.0
Houghton Kathleen VP - Sales and Marketing Officer
Transaction date
Sale
Price
3.00
Quantity 1,300 -100.0%
Value US$3,894
Notification date Transaction date B/S Transaction type Insider and/or position Nb. shares
Price
Value
Number of shares Price Value Details
2026-09-23 2026-09-23 B Purchase Large shareholder
48,877 +41.3%
350.80
US$1,826,714
48,877 +41.3% 350.80 US$1,826,714
2026-09-23 2026-09-21 B Purchase Large shareholder
77,558 -42.7%
327.22
US$366,796
77,558 -42.7% 327.22 US$366,796
2026-09-18 2026-09-16 B Purchase Large shareholder
62,018 +18.7%
28.73
US$4,935,408
62,018 +18.7% 28.73 US$4,935,408
2026-09-04 2026-09-02 B Purchase Large shareholder
1,000 +0.1%
5.10
US$100,000
1,000 +0.1% 5.10 US$100,000
2026-08-26 2026-08-25 B Purchase Large shareholder
91,166 +1.8%
5.50
US$501,094
91,166 +1.8% 5.50 US$501,094
2026-08-26 2026-08-24 B Purchase Large shareholder
9,446 +0.2%
5.50
US$51,953
9,446 +0.2% 5.50 US$51,953
2026-08-14 2026-08-12 B Purchase Large shareholder
5,198 +0.1%
5.50
US$28,589
5,198 +0.1% 5.50 US$28,589
2026-07-31 2026-07-29 B Purchase Large shareholder
52,104 +1.0%
5.99
US$312,103
52,104 +1.0% 5.99 US$312,103
2026-07-22 2026-07-21 B Purchase Large shareholder
47,708 +1.0%
5.99
US$285,742
47,708 +1.0% 5.99 US$285,742
2026-07-22 2026-07-20 B Purchase Large shareholder
17,842 +0.4%
5.99
US$106,859
17,842 +0.4% 5.99 US$106,859
2026-07-08 2026-07-07 B Purchase Large shareholder
600 +0.0%
5.99
US$3,594
600 +0.0% 5.99 US$3,594
2026-07-08 2026-07-06 B Purchase Large shareholder
4,634 +0.1%
5.99
US$27,758
4,634 +0.1% 5.99 US$27,758
2026-07-02 2026-07-02 B Purchase Large shareholder
271,302 +5.8%
5.97
US$1,619,212
271,302 +5.8% 5.97 US$1,619,212
2026-07-02 2026-07-01 B Purchase Large shareholder
288,111 +6.5%
5.88
US$1,695,101
288,111 +6.5% 5.88 US$1,695,101
2026-07-02 2026-06-30 B Purchase Large shareholder
204,789 +4.9%
5.68
US$1,162,894
204,789 +4.9% 5.68 US$1,162,894
2026-05-21 2026-05-19 B Purchase

Chief Financial Officer

Officer
2,000 +inf%
4.87
US$9,740
2,000 +inf% 4.87 US$9,740
2026-05-15 2026-05-14 B Purchase Non-Executive Director
1,400 +5.8%
4.97
US$6,958
1,400 +5.8% 4.97 US$6,958
2026-05-15 2026-05-14 B Purchase Non-Executive Director
3,600 +17.5%
4.96
US$17,856
3,600 +17.5% 4.96 US$17,856
2026-05-15 2026-05-14 B Purchase Non-Executive Director
1,400 +5.8%
4.97
US$6,958
1,400 +5.8% 4.97 US$6,958
2026-05-15 2026-05-14 B Purchase Non-Executive Director
3,600 +17.5%
4.96
US$17,856
3,600 +17.5% 4.96 US$17,856
2026-05-15 2026-05-14 B Purchase Non-Executive Director
550 +5.2%
4.85
US$2,665
550 +5.2% 4.85 US$2,665
2026-05-15 2026-05-14 B Purchase Non-Executive Director
5,100 +125.5%
4.92
US$25,092
5,100 +125.5% 4.92 US$25,092
2026-05-15 2026-05-13 B Purchase

President and CEO

Executive Director
5,000 +inf%
4.90
US$24,475
5,000 +inf% 4.90 US$24,475
2026-05-15 2026-05-13 B Purchase Non-Executive Director
5,200 +127.9%
4.88
US$25,350
5,200 +127.9% 4.88 US$25,350
2026-05-15 2026-05-13 B Purchase Non-Executive Director
5,000 +3.4%
4.84
US$24,200
5,000 +3.4% 4.84 US$24,200
2025-12-09 2025-12-05 S Sale Non-Executive Director
484,616 -20.0%
7.40
US$3,588,097
484,616 -20.0% 7.40 US$3,588,097
2025-11-18 2025-11-17 B Purchase Non-Executive Director
3,500 +2.1%
6.79
US$23,748
3,500 +2.1% 6.79 US$23,748
2024-11-12 2024-11-07 B Purchase Non-Executive Director
2,500 +1.6%
5.98
US$14,948
2,500 +1.6% 5.98 US$14,948
2024-06-18 2024-06-14 S Sale Non-Executive Director
10,000 -5.9%
9.20
US$92,000
10,000 -5.9% 9.20 US$92,000
2023-12-14 2023-12-14 S Sale Non-Executive Director
5,103 -2.8%
13.25
US$67,615
5,103 -2.8% 13.25 US$67,615
2023-12-14 2023-12-14 S Sale Non-Executive Director
51 -0.0%
13.26
US$676
51 -0.0% 13.26 US$676
2023-12-14 2023-12-14 S Sale Non-Executive Director
51 -0.0%
13.27
US$677
51 -0.0% 13.27 US$677
2023-12-14 2023-12-14 S Sale Non-Executive Director
12,686 -6.4%
13.30
US$168,724
12,686 -6.4% 13.30 US$168,724
2023-12-14 2023-12-14 S Sale Non-Executive Director
55 -0.0%
13.32
US$733
55 -0.0% 13.32 US$733
2023-12-14 2023-12-14 S Sale Non-Executive Director
2,259 -1.1%
13.31
US$30,067
2,259 -1.1% 13.31 US$30,067
2023-12-14 2023-12-13 S Sale Non-Executive Director
1,000 -0.5%
12.91
US$12,910
1,000 -0.5% 12.91 US$12,910
2023-12-14 2023-12-13 S Sale Non-Executive Director
134 -0.1%
12.92
US$1,731
134 -0.1% 12.92 US$1,731
2023-12-14 2023-12-13 S Sale Non-Executive Director
300 -0.1%
12.96
US$3,888
300 -0.1% 12.96 US$3,888
2023-12-14 2023-12-13 S Sale Non-Executive Director
9,865 -4.7%
12.91
US$127,357
9,865 -4.7% 12.91 US$127,357
2023-12-14 2023-12-13 S Sale Non-Executive Director
11,100 -5.0%
12.95
US$143,745
11,100 -5.0% 12.95 US$143,745
2023-12-14 2023-12-12 S Sale Non-Executive Director
10,000 -4.3%
12.85
US$128,500
10,000 -4.3% 12.85 US$128,500
2023-12-14 2023-12-12 S Sale Non-Executive Director
10,000 -4.1%
12.95
US$129,500
10,000 -4.1% 12.95 US$129,500
2023-12-14 2023-12-12 S Sale Non-Executive Director
10,000 -4.0%
12.75
US$127,500
10,000 -4.0% 12.75 US$127,500
2023-06-15 2023-06-14 S Sale Non-Executive Director
20,000 -12.3%
9.56
US$191,200
20,000 -12.3% 9.56 US$191,200
2023-06-13 2023-06-14 PrS Proposed sale

Director

Non-Executive Director
20,000
9.35
US$187,000
20,000 9.35 US$187,000
2023-03-15 2023-03-14 B Purchase Non-Executive Director
1,000 +0.8%
8.27
US$8,270
1,000 +0.8% 8.27 US$8,270
2022-12-14 2022-12-12 S Sale

VP-Operations

Officer
19,000 -85.6%
11.53
US$219,070
19,000 -85.6% 11.53 US$219,070
2022-11-10 2022-11-09 S Sale

CFO

Officer
46,194 -64.7%
10.13
US$467,945
46,194 -64.7% 10.13 US$467,945
2022-11-10 2022-11-08 S Sale

CFO

Officer
45,000 -38.7%
10.66
US$479,700
45,000 -38.7% 10.66 US$479,700
2022-06-17 2022-06-15 S Sale Non-Executive Director
20,000 -13.7%
9.75
US$194,920
20,000 -13.7% 9.75 US$194,920
2022-06-06 2022-06-03 S Sale Non-Executive Director
20,000 -12.1%
9.79
US$195,816
20,000 -12.1% 9.79 US$195,816
2022-05-31 2022-05-31 S Sale Non-Executive Director
55,785 -12.0%
9.70
US$541,114
55,785 -12.0% 9.70 US$541,114
2022-05-31 2022-05-31 S Sale Non-Executive Director
27,892 -23.1%
9.70
US$270,552
27,892 -23.1% 9.70 US$270,552
2022-05-31 2022-05-27 S Sale Non-Executive Director
44,215 -8.7%
9.73
US$430,137
44,215 -8.7% 9.73 US$430,137
2022-05-31 2022-05-27 S Sale Non-Executive Director
22,108 -15.5%
9.73
US$215,073
22,108 -15.5% 9.73 US$215,073
2022-05-09 2022-05-09 S Sale Non-Executive Director
75,000 -37.8%
9.00
US$675,000
75,000 -37.8% 9.00 US$675,000
2022-03-14 2022-03-11 S Sale Non-Executive Director
100,000 -15.8%
5.78
US$578,000
100,000 -15.8% 5.78 US$578,000
2022-03-14 2022-03-11 S Sale Non-Executive Director
100,000 -41.2%
5.75
US$575,000
100,000 -41.2% 5.75 US$575,000
2022-01-18 2021-12-16 S Sale Non-Executive Director
10,000 -7.1%
3.76
US$37,590
10,000 -7.1% 3.76 US$37,590
2022-01-18 2021-12-15 S Sale Non-Executive Director
23,000 -14.1%
3.84
US$88,366
23,000 -14.1% 3.84 US$88,366
2022-01-18 2021-12-10 S Sale Non-Executive Director
35,320 -17.8%
4.04
US$142,799
35,320 -17.8% 4.04 US$142,799
2021-11-19 2021-11-19 S Sale Non-Executive Director
7,900 -1.2%
4.67
US$36,893
7,900 -1.2% 4.67 US$36,893
2021-11-19 2021-11-19 S Sale Non-Executive Director
7,900 -3.1%
4.70
US$37,154
7,900 -3.1% 4.70 US$37,154
2021-11-19 2021-11-18 S Sale Non-Executive Director
92,100 -12.3%
4.71
US$433,791
92,100 -12.3% 4.71 US$433,791
2021-11-19 2021-11-18 S Sale Non-Executive Director
92,100 -26.9%
4.71
US$433,791
92,100 -26.9% 4.71 US$433,791
2021-11-17 2021-11-17 S Sale

CFO

Officer
200,000 -88.8%
4.76
US$952,000
200,000 -88.8% 4.76 US$952,000
2021-06-11 2021-06-09 S Sale

VP - Sales and Marketing

Officer
9,100 -18.5%
2.89
US$26,299
9,100 -18.5% 2.89 US$26,299
2021-06-11 2021-06-09 S Sale

VP - Sales and Marketing

Officer
200 -0.4%
2.90
US$579
200 -0.4% 2.90 US$579
2021-06-11 2021-06-09 S Sale

VP - Sales and Marketing

Officer
700 -1.4%
2.90
US$2,030
700 -1.4% 2.90 US$2,030
2021-06-11 2021-06-09 S Sale

VP - Sales and Marketing

Officer
2,015 -3.9%
2.92
US$5,884
2,015 -3.9% 2.92 US$5,884
2021-06-11 2021-06-09 S Sale

VP - Sales and Marketing

Officer
100 -0.2%
2.93
US$293
100 -0.2% 2.93 US$293
2021-06-11 2021-06-09 S Sale

VP - Sales and Marketing

Officer
1,000 -1.9%
2.93
US$2,930
1,000 -1.9% 2.93 US$2,930
2021-06-11 2021-06-09 S Sale

VP - Sales and Marketing

Officer
200 -0.4%
2.93
US$586
200 -0.4% 2.93 US$586
2021-06-03 2021-06-02 S Sale Non-Executive Director
13,262 -26.3%
2.95
US$39,183
13,262 -26.3% 2.95 US$39,183
2021-06-02 2021-06-02 S Sale

VP - Sales and Marketing

Officer
1,300 -100.0%
3.00
US$3,894
1,300 -100.0% 3.00 US$3,894