United States Machinery, Equipment & Components

Hudson Technologies Inc (HDSN)

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Over the past 90 days, Hudson Technologies Inc. has seen significant insider buying activity, with 18 transactions totaling approximately $5.37 million in net purchases. Hartree Partners, LP has been the primary buyer, accounting for the bulk of this volume. These transactions follow a recent earnings report that missed expectations, amid a 2.3% decline in stock price.
Ticker: HDSN Exchange: NAS
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• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Buy signal Sell signal Earnings
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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.

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Top insiders
Trades
Buy 29 Jul 2026
Value US$1,706,746.25 | Price 267.03 | Shares 54,351 (-36.5%)
Abbreviations B: Buy, S: Sell, PP: Planned purchase, PlS: Planned sale, PrS: Proposed sale, O: Option / Other
Notification date Transaction date B/S Transaction type Insider and/or position Nb. shares
Price
Value 		Number of shares Price Value Details
2026-07-31 2026-07-29 B Purchase
Hartree Partners, LP
Large shareholder
54,351 -36.5%
267.03
US$1,706,746 		54,351 -36.5% 267.03 US$1,706,746
2026-07-22 2026-07-21 B Purchase
Hartree Partners, LP
Large shareholder
23,013 +23.7%
245.95
US$4,178,677 		23,013 +23.7% 245.95 US$4,178,677
2026-07-22 2026-07-20 B Purchase
Hartree Partners, LP
Large shareholder
54,277 -15.6%
15.11
US$3,376,195 		54,277 -15.6% 15.11 US$3,376,195
2026-07-08 2026-07-07 B Purchase
Hartree Partners, LP
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
Hartree Partners, LP
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
Hartree Partners, LP
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
Hartree Partners, LP
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
Hartree Partners, LP
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
Bertaux Brian J.

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
Mansy Loan Nguyen
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
Mansy Loan Nguyen
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
3.0
Parrillo Richard
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
3.0
Parrillo Richard
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
3.0
Bulgarino Nicole E
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
Feeler Jeffrey R
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
3.3
Gaglione Kenneth

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
Sheriff Alan
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
2.8
Prouty Eric A
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
3.0
COLEMAN BRIAN F
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
3.0
ABBATECOLA VINCENT P
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
3.0
ABBATECOLA VINCENT P
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
3.0
ABBATECOLA VINCENT P
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
3.0
Parrillo Richard
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
3.0
Parrillo Richard
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
3.0
Parrillo Richard
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
3.0
Parrillo Richard
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
3.0
Parrillo Richard
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
3.0
Parrillo Richard
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
3.0
Parrillo Richard
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
3.0
Parrillo Richard
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
3.0
Parrillo Richard
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
3.0
Parrillo Richard
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
3.0
Parrillo Richard
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
3.0
Parrillo Richard
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
3.0
Parrillo Richard
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
3.0
Parrillo Richard
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
2.8
Prouty Eric A
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
2.8
Prouty Eric A

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
3.0
ABBATECOLA VINCENT P
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
3.3
Gaglione Kenneth

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
2.6
Krishnamurti Nat

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
2.6
Krishnamurti Nat

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
3.0
ABBATECOLA VINCENT P
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
3.0
ABBATECOLA VINCENT P
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
2.7
MANDRACCHIA STEPHEN P
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
2.7
MANDRACCHIA STEPHEN P
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
2.7
MANDRACCHIA STEPHEN P
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
2.7
MANDRACCHIA STEPHEN P
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
2.8
Prouty Eric A
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
2.7
MANDRACCHIA STEPHEN P
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
2.7
MANDRACCHIA STEPHEN P
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
3.0
ABBATECOLA VINCENT P
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
3.0
ABBATECOLA VINCENT P
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
3.0
ABBATECOLA VINCENT P
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
2.7
MANDRACCHIA STEPHEN P
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
2.7
MANDRACCHIA STEPHEN P
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
2.7
MANDRACCHIA STEPHEN P
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
2.7
MANDRACCHIA STEPHEN P
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
2.6
Krishnamurti Nat

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
1.0
Houghton Kathleen

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
1.0
Houghton Kathleen

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
1.0
Houghton Kathleen

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
1.0
Houghton Kathleen

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
1.0
Houghton Kathleen

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
1.0
Houghton Kathleen

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
1.0
Houghton Kathleen

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
0.7
MORCH OTTO C
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
1.0
Houghton Kathleen

VP - Sales and Marketing

Officer
1,300 -100.0%
3.00
US$3,894 		1,300 -100.0% 3.00 US$3,894
2021-06-02 2021-06-02 S Sale
1.0
Houghton Kathleen

VP - Sales and Marketing

Officer
2,282 -63.7%
3.00
US$6,846 		2,282 -63.7% 3.00 US$6,846
2021-05-27 2021-05-26 S Sale
2.7
MANDRACCHIA STEPHEN P
Non-Executive Director
23,927 -3.8%
2.48
US$59,339 		23,927 -3.8% 2.48 US$59,339
2021-05-27 2021-05-26 S Sale
2.7
MANDRACCHIA STEPHEN P
Non-Executive Director
23,926 -6.5%
2.48
US$59,336 		23,926 -6.5% 2.48 US$59,336
2021-05-27 2021-05-25 S Sale
2.7
MANDRACCHIA STEPHEN P
Non-Executive Director
76,073 -10.8%
2.37
US$180,293 		76,073 -10.8% 2.37 US$180,293
2021-05-27 2021-05-25 S Sale
2.7
MANDRACCHIA STEPHEN P
Non-Executive Director
76,074 -17.2%
2.37
US$180,295 		76,074 -17.2% 2.37 US$180,295
2021-03-15 2021-03-12 S Sale
2.7
MANDRACCHIA STEPHEN P
Non-Executive Director
600 -0.1%
1.58
US$945 		600 -0.1% 1.58 US$945
2021-03-15 2021-03-12 S Sale
2.7
MANDRACCHIA STEPHEN P
Non-Executive Director
8,100 -1.1%
1.57
US$12,725 		8,100 -1.1% 1.57 US$12,725
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