HDSN
Hudson Technolog (HDSN)
NASDAQ
$5.43+$0.03 (+0.52%)
Price as of Sep 11, 2026 7:56 PM EDT
  • $227.5M
    Market Cap
  • -46.80%
    1-Year Change
  • Specialty Chemicals
    Industry

Top Holders

Institutional
Mutual Funds
Holder
Ownership %
Shares Held
Change (Shares, %)
Report Date
HARTREE PARTNERS, LP
10.49%
4.4M
+611,889 (+13.87%)
Jun 30, 2026
WESTERLY CAPITAL MANAGEMENT, LLC
8.03%
3.4M
+205,000 (+6.07%)
Jun 30, 2026
BLACKROCK INC.
7.54%
3.2M
+91,271 (+2.88%)
Jun 30, 2024
BLACKROCK FUNDING, INC. /DE
7.52%
3.2M
-161,562 (-5.11%)
Dec 31, 2024
BLACKROCK, INC.
6.75%
2.8M
-22,267 (-0.78%)
Jun 30, 2026
VANGUARD GROUP INC
5.56%
2.3M
-34,471 (-1.47%)
Dec 31, 2025
DIMENSIONAL FUND ADVISORS LP
4.68%
2.0M
-180,397 (-9.17%)
Jun 30, 2026

Current Ownership Distribution

  • Institutions583.3M (77.62%)
  • Mutual Funds157.0M (20.89%)
  • Insiders11.2M (1.50%)
  • Other0 (0.00%)

Insider Transactions

  • 1.50% (11.2M)
    Current InsiderOwnership (%, shares)
  • 2
    Number of InsiderBuying (last 12 months)
  • $283.1M
    Amount of InsiderBuying (last 12 months)
  • 0
    Number of InsiderSelling (last 12 months)
  • $0.00
    Amount of InsiderSelling (last 12 months)
Insider Name & Title
Type
Date
Transaction Value
Shares
Share Price
Shares After Transactions
Hartree Partners, LP
Buy
Sep 02, 2026
$27,116.70
5,317
$5.10
5.2M
Hartree Partners, LP
Buy
Aug 12, 2026
$28,589.00
5,198
$5.50
5.1M
Hartree Partners, LP
Buy
Jul 29, 2026
$312,102.96
52,104
$5.99
5.1M
Hartree Partners, LP
Buy
Jul 21, 2026
$285,742.30
47,708
$5.99
5.0M
Hartree Partners, LP
Buy
Jul 20, 2026
$106,859.31
17,842
$5.99
5.0M
Hartree Partners, LP
Buy
Jul 07, 2026
$3,594.00
600
$5.99
5.0M
Hartree Partners, LP
Buy
Jul 06, 2026
$27,757.66
4,634
$5.99
5.0M
Hartree Partners, LP
Buy
Jul 02, 2026
$1.6M
271,302
$5.97
5.0M
Hartree Partners, LP
Buy
Jul 01, 2026
$1.7M
288,111
$5.88
4.7M
Hartree Partners, LP
Buy
Jun 30, 2026
$1.2M
204,789
$5.68
4.4M
Sheriff Alan
Award
Jun 17, 2026
$0.00
15,360
$0.00
15,360
Parrillo Richard
Award
Jun 17, 2026
$0.00
31,780
$0.00
31,780
Sheriff Alan
Award
Jun 17, 2026
$0.00
3,219
$0.00
12,484
Mansy Loan Nguyen
Award
Jun 17, 2026
$0.00
21,186
$0.00
21,186
Proudy Eric A
Award
Jun 17, 2026
$0.00
21,186
$0.00
21,186
Mansy Loan Nguyen
Award
Jun 17, 2026
$0.00
8,881
$0.00
34,476
Proudy Eric A
Award
Jun 17, 2026
$0.00
4,440
$0.00
158,292
Houghton Kathleen
Sr. VP-Sales and Marketing
Exempt
Jan 08, 2026
$0.00
120,000
$0.00
0
Houghton Kathleen
Sr. VP-Sales and Marketing
Exempt
Jan 08, 2026
$0.00
47,619
$0.00
0
Houghton Kathleen
Sr. VP-Sales and Marketing
Exempt
Jan 08, 2026
$0.00
50,888
$0.00
0
Houghton Kathleen
Sr. VP-Sales and Marketing
Exempt
Jan 08, 2026
$90,000.00
120,000
$0.75
161,163
Houghton Kathleen
Sr. VP-Sales and Marketing
In Kind
Jan 08, 2026
$318,598.30
44,873
$7.10
116,290
Houghton Kathleen
Sr. VP-Sales and Marketing
Exempt
Jan 08, 2026
$76,190.40
47,619
$1.60
163,909
Houghton Kathleen
Sr. VP-Sales and Marketing
In Kind
Jan 08, 2026
$154,758.70
21,797
$7.10
142,112
Houghton Kathleen
Sr. VP-Sales and Marketing
Exempt
Jan 08, 2026
$193,883.28
50,888
$3.81
193,000
Houghton Kathleen
Sr. VP-Sales and Marketing
In Kind
Jan 08, 2026
$244,112.20
34,382
$7.10
158,618
Gaglione Kenneth
President and CEO
Award
Nov 24, 2025
$0.00
216,309
$0.00
216,309
ABBATECOLA VINCENT P
Buy
Nov 17, 2025
$23,747.50
3,500
$6.79
169,748
Proudy Eric A
Exempt
Jul 31, 2025
$0.00
4,744
$0.00
0
Proudy Eric A
Exempt
Jul 31, 2025
$34,868.40
4,744
$7.35
152,565