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HUDSON TECHNOLOGIES INC /NY

HDSN Net buying
CIK 0000925528 #3808 in the set updated 17 Sep 2026
Bought (12 mo)
$6.01M
out of their own pocket, the only kind of buying there is
Sold (12 mo)
$3.59M
$0.00 on a plan · $0.00 straight out of an exercise
Sold at will
$3.59M
1 of 1 sales
Net
+$2.42M
+$2.42M against sales at will

By person

12 insiders · 28 transactions
0.4×

Kenneth Gaglione holds only 0.4 times base salary in stock. $25.50K 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%
COLEMAN BRIAN F
Director
$3.59M (1)
−$3.59M
1,944,312
4.62%
$9.92M
−20.0%
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
+142.3%
Parrillo Richard
Director
$24.81K (2)
+$24.81K
25,595
0.0608%
$130.53K
+47.0%
Gaglione Kenneth
President and CEO
$24.48K (1)
+$24.48K
5,000
0.0119%
$25.50K
Prouty Eric A
Director
$24.20K (1)
+$24.20K
158,292
0.3761%
$807.29K
+9.4%
ABBATECOLA VINCENT P
Director
$23.75K (1)
+$23.75K
169,748
0.4033%
$865.71K
+6.5%
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
+51.0%
Houghton Kathleen
Sr. VP-Sales and Marketing
158,618
0.3769%
$808.95K
+285.3%
Insider
Date
Role
Action
Shares
Price
Amount
Hartree Partners, LP
2 Sep 2026
10% owner
Buy
5,317
$5.10
$27.12K
Hartree Partners, LP
25 Aug 2026
10% owner
Buy
91,166
$5.50
$501.09K
Hartree Partners, LP
24 Aug 2026
10% owner
Buy
9,446
$5.50
$51.95K
Hartree Partners, LP
12 Aug 2026
10% owner
Buy
5,198
$5.50
$28.59K
Hartree Partners, LP
29 Jul 2026
10% owner
Buy
52,104
$5.99
$312.10K
Hartree Partners, LP
21 Jul 2026
10% owner
Buy
47,708
$5.99
$285.74K
Hartree Partners, LP
20 Jul 2026
10% owner
Buy
17,842
$5.99
$106.86K
Hartree Partners, LP
7 Jul 2026
10% owner
Buy
600
$5.99
$3.59K
Hartree Partners, LP
6 Jul 2026
10% owner
Buy
4,634
$5.99
$27.76K
Hartree Partners, LP
2 Jul 2026
10% owner
Buy
271,302
$5.97
$1.62M
Hartree Partners, LP
1 Jul 2026
10% owner
Buy
288,111
$5.88
$1.70M
Hartree Partners, LP
30 Jun 2026
10% owner
Buy
204,789
$5.68
$1.16M
Bertaux Brian J.
19 May 2026
Chief Financial Officer
Buy
2,000
$4.87
$9.74K
Feeler Jeffrey R
14 May 2026
Director
Buy
5,100
$4.92
$25.09K
Bulgarino Nicole E
14 May 2026
Director
Buy
550
$4.85
$2.66K
Parrillo Richard
14 May 2026
Director
Buy
1,400
$4.97
$6.96K
Parrillo Richard
14 May 2026
Director
Buy
3,600
$4.96
$17.86K
Mansy Loan Nguyen
14 May 2026
Director
Buy
1,400
$4.97
$6.96K
Mansy Loan Nguyen
14 May 2026
Director
Buy
3,600
$4.96
$17.86K
Gaglione Kenneth
13 May 2026
President and CEO
Buy indirect
5,000
$4.90
$24.48K
Sheriff Alan
13 May 2026
Director
Buy
5,200
$4.88
$25.35K
Prouty Eric A
13 May 2026
Director
Buy
5,000
$4.84
$24.20K
Houghton Kathleen
8 Jan 2026
Sr. VP-Sales and Marketing
Exercised, kept
50,888
$3.81
$193.88K
Houghton Kathleen
8 Jan 2026
Sr. VP-Sales and Marketing
Exercised, kept
47,619
$1.60
$76.19K
Houghton Kathleen
8 Jan 2026
Sr. VP-Sales and Marketing
Exercised, kept
120,000
$0.75
$90.00K
COLEMAN BRIAN F
5 Dec 2025
Director
Sell
484,616
$7.40
$3.59M
ABBATECOLA VINCENT P
17 Nov 2025
Director
Buy
3,500
$6.79
$23.75K
ABBATECOLA VINCENT P
24 Sep 2025
Director
Exercised, kept
4,744
$7.35
$34.87K

What was left out

Form 4 filings counted 28
Amendments (4/A) skipped 2
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 0
Sales at will 1
Transactions with no price 0
Shares from compensation/vesting 355,711
History held since 7 Sep 2016