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HUDSON TECHNOLOGIES INC /NY

HDSN Net selling
CIK 0000925528 #3808 in the set updated 17 Sep 2026
Bought (120 mo)
$6.36M
out of their own pocket, the only kind of buying there is
Sold (120 mo)
$12.97M
$0.00 on a plan · $885.29K straight out of an exercise
Sold at will
$12.09M
59 of 64 sales
Net
−$6.61M
−$5.72M against sales at will

By person

20 insiders · 176 transactions
8.3×

Kenneth Gaglione holds 8.3 times base salary in stock. $445.51K of shares against $53.46K in salary for 2025.

Salary from the company's own proxy. The shares are what Kenneth Gaglione last reported holding, valued at $5.10, the price Common Stock, par value $0.01 was last bought or sold at on the open market here, on 2 Sep 2026.

Insider
Role
Bought
Sold
Net
Holding
Of company
Worth
Change
Hartree Partners, LP entity
10% owner
$5.82M (12)
—
+$5.82M
5,205,317
12.37%
$26.55M
+23.7%
MANDRACCHIA STEPHEN P
Director
$11.02K (1)
$4.19M (17)
−$4.18M
4,596,627
10.92%
$23.44M
−11.6%
COLEMAN BRIAN F
Director
$83.27K (4)
$3.59M (1)
−$3.50M
1,944,312
4.62%
$9.92M
−1.0%
Krishnamurti Nat
CFO
—
$1.90M (3)
−$1.90M
25,207
0.0599%
$128.56K
+187.0%
ABBATECOLA VINCENT P
Director
$63.99K (5)
$890.67K (8)
−$826.69K
280,994
0.6676%
$1.43M
+66.7%
Parrillo Richard
Director
$139.62K (9)
$943.62K (14)
−$804.00K
25,595
0.0608%
$130.53K
—
Prouty Eric A
Director
$62.55K (5)
$866.20K (2)
−$803.65K
158,292
0.3761%
$807.29K
+432.9%
MORCH OTTO C
Director
—
$252.84K (4)
−$252.84K
87,366
0.2076%
$445.57K
+273.3%
Gaglione Kenneth
President and CEO
$24.48K (1)
$219.07K (1)
−$194.60K
87,354
0.2075%
$445.51K
+3,394%
MONETTA DOMINIC J
Director
—
$77.04K (5)
−$77.04K
203,049
0.4824%
$1.04M
+94.6%
ZUGIBE KEVIN J
Chairman, CEO
$69.81K (4)
—
+$69.81K
3,604,923
8.57%
$18.39M
+6.3%
Houghton Kathleen
Sr. VP-Sales and Marketing
—
$49.34K (9)
−$49.34K
158,618
0.3769%
$808.95K
—
Sheriff Alan
Director
$25.35K (1)
—
+$25.35K
12,484
0.0297%
$63.67K
—
Feeler Jeffrey R
Director
$25.09K (1)
—
+$25.09K
12,384
0.0294%
$63.16K
—
Mansy Loan Nguyen
Director
$24.81K (2)
—
+$24.81K
34,476
0.0819%
$175.83K
—
Bertaux Brian J.
Chief Financial Officer
$9.74K (1)
—
+$9.74K
2,000
0.0048%
$10.20K
—
Bulgarino Nicole E
Director
$2.66K (1)
—
+$2.66K
11,048
0.0262%
$56.34K
—
Estate of Kevin J. Zugibe entity
10% owner
—
—
—
4,203,536
9.99%
$21.44M
+16.6%
Frizzley Jill Kathleen
Director
—
—
—
10,204
0.0242%
$52.04K
—
Caruso Richard Damian
Director
—
—
—
6,573
0.0156%
$33.52K
—

Individual transactions

59
Insider
Date
Role
Action
Shares
Price
Amount
COLEMAN BRIAN F
5 Dec 2025
Director
Sell
484,616
$7.40
$3.59M
ABBATECOLA VINCENT P
14 Jun 2024
Director
Sell
10,000
$9.20
$92.00K
Parrillo Richard
14 Dec 2023
Director
Sell
5,103
$13.25
$67.61K
Parrillo Richard
14 Dec 2023
Director
Sell
51
$13.26
$676.26
Parrillo Richard
14 Dec 2023
Director
Sell
51
$13.27
$676.77
Parrillo Richard
14 Dec 2023
Director
Sell
12,686
$13.30
$168.72K
Parrillo Richard
14 Dec 2023
Director
Sell
55
$13.32
$732.60
Parrillo Richard
14 Dec 2023
Director
Sell
2,259
$13.31
$30.07K
Parrillo Richard
13 Dec 2023
Director
Sell
1,000
$12.91
$12.91K
Parrillo Richard
13 Dec 2023
Director
Sell
134
$12.92
$1.73K
Parrillo Richard
13 Dec 2023
Director
Sell
300
$12.96
$3.89K
Parrillo Richard
13 Dec 2023
Director
Sell
9,865
$12.91
$127.36K
Parrillo Richard
13 Dec 2023
Director
Sell
11,100
$12.95
$143.75K
Parrillo Richard
12 Dec 2023
Director
Sell
10,000
$12.85
$128.50K
Parrillo Richard
12 Dec 2023
Director
Sell
10,000
$12.95
$129.50K
Parrillo Richard
12 Dec 2023
Director
Sell
10,000
$12.75
$127.50K
Prouty Eric A
14 Jun 2023
Director
Sell
20,000
$9.56
$191.20K
Gaglione Kenneth
12 Dec 2022
VP-Operations
Sell
19,000
$11.53
$219.07K
Krishnamurti Nat
9 Nov 2022
CFO
Sell
46,194
$10.13
$467.95K
ABBATECOLA VINCENT P
15 Jun 2022
Director
Sell
20,000
$9.75
$194.92K
MANDRACCHIA STEPHEN P
31 May 2022
Director
Sell indirect
55,785
$9.70
$541.11K
MANDRACCHIA STEPHEN P
31 May 2022
Director
Sell
27,892
$9.70
$270.55K
MANDRACCHIA STEPHEN P
27 May 2022
Director
Sell indirect
44,215
$9.73
$430.14K
MANDRACCHIA STEPHEN P
27 May 2022
Director
Sell
22,108
$9.73
$215.07K
Prouty Eric A
9 May 2022
Director
Sell
75,000
$9.00
$675.00K
MANDRACCHIA STEPHEN P
11 Mar 2022
Director
Sell indirect
100,000
$5.78
$578.00K
MANDRACCHIA STEPHEN P
11 Mar 2022
Director
Sell
100,000
$5.75
$575.00K
ABBATECOLA VINCENT P
16 Dec 2021
Director
Sell
10,000
$3.76
$37.59K
ABBATECOLA VINCENT P
15 Dec 2021
Director
Sell
23,000
$3.84
$88.37K
ABBATECOLA VINCENT P
10 Dec 2021
Director
Sell
35,320
$4.04
$142.80K
MANDRACCHIA STEPHEN P
19 Nov 2021
Director
Sell indirect
7,900
$4.67
$36.89K
MANDRACCHIA STEPHEN P
19 Nov 2021
Director
Sell
7,900
$4.70
$37.15K
MANDRACCHIA STEPHEN P
18 Nov 2021
Director
Sell indirect
92,100
$4.71
$433.79K
MANDRACCHIA STEPHEN P
18 Nov 2021
Director
Sell
92,100
$4.71
$433.79K
Krishnamurti Nat
17 Nov 2021
CFO
Sell
200,000
$4.76
$952.00K
MORCH OTTO C
9 Aug 2021
Director
Sell
57,211
$3.20
$182.90K
Houghton Kathleen
9 Jun 2021
VP - Sales and Marketing
Sell
9,100
$2.89
$26.30K
Houghton Kathleen
9 Jun 2021
VP - Sales and Marketing
Sell
200
$2.90
$579.00
Houghton Kathleen
9 Jun 2021
VP - Sales and Marketing
Sell
700
$2.90
$2.03K
Houghton Kathleen
9 Jun 2021
VP - Sales and Marketing
Sell
2,015
$2.92
$5.88K
Houghton Kathleen
9 Jun 2021
VP - Sales and Marketing
Sell
100
$2.93
$293.00
Houghton Kathleen
9 Jun 2021
VP - Sales and Marketing
Sell
1,000
$2.93
$2.93K
Houghton Kathleen
9 Jun 2021
VP - Sales and Marketing
Sell
200
$2.93
$586.20
Houghton Kathleen
2 Jun 2021
VP - Sales and Marketing
Sell
1,300
$3.00
$3.89K
Houghton Kathleen
2 Jun 2021
VP - Sales and Marketing
Sell
2,282
$3.00
$6.85K
MORCH OTTO C
2 Jun 2021
Director
Sell
13,262
$2.95
$39.18K
ABBATECOLA VINCENT P
1 Jun 2021
Director
Sell
16,298
$2.95
$48.08K
MANDRACCHIA STEPHEN P
25 May 2021
Director
Sell indirect
76,073
$2.37
$180.29K
MANDRACCHIA STEPHEN P
25 May 2021
Director
Sell
76,074
$2.37
$180.30K
MANDRACCHIA STEPHEN P
12 Mar 2021
Director
Sell indirect
600
$1.58
$945.00
MANDRACCHIA STEPHEN P
12 Mar 2021
Director
Sell indirect
8,100
$1.57
$12.73K
MANDRACCHIA STEPHEN P
12 Mar 2021
Director
Sell indirect
91,300
$1.57
$143.34K
MONETTA DOMINIC J
16 Nov 2020
Director
Sell
15,000
$1.15
$17.28K
MONETTA DOMINIC J
10 Aug 2020
Director
Sell
15,000
$1.22
$18.30K
MONETTA DOMINIC J
22 May 2019
Director
Sell
10,000
$2.06
$20.59K
MONETTA DOMINIC J
14 May 2019
Director
Sell
5,801
$1.96
$11.37K
MONETTA DOMINIC J
9 May 2019
Director
Sell
5,000
$1.90
$9.50K
MORCH OTTO C
18 May 2018
Director
Sell
7,224
$2.52
$18.20K
MORCH OTTO C
18 May 2018
Director
Sell
5,000
$2.51
$12.55K
Show all 176 transactions →

What was left out

Form 4 filings counted 217
Amendments (4/A) skipped 4
Filings about a different issuer 0
Unreadable filings 0
Joint filings 0
Sales on a Rule 10b5-1 plan 0
Sales straight out of an exercise 5
Sales at will 59
Transactions with no price 0
Shares from compensation/vesting 9,950,732
Sales filed before the plan box existed 42
History held since 7 Sep 2016