Hartree Partners, LP
10% owner
PurchaseAlert
- Shares
- 118,549
- Price
- $5.10
- Value
- $604,446
SEC EDGAR · Forms 3/4/5Updated through Oct 30, 2026•39 filings
HDSN
HUDSON TECHNOLOGIES INC /NY
Net purchases of $1.3M over the last 3 months
1 buyer account for the net balance. There is no cluster of three distinct buyers within 30 days. We found 2 CEO/CFO purchases over 12 months.
How to read this signal
Only open-market P purchases and S sales count toward the signal. Vesting, options, taxes and gifts remain in the source data but do not trigger alerts. Rule 10b5-1 trades are shown as informational.
3-month balance
+$1,338,916
1 buyers · 0 sellers
12-month purchases
$6,785,333
10 distinct insiders
12-month sales
$3,588,097
1 distinct insiders
Highlighted alerts
29
0 Rule 10b5-1 trades treated as informational
Buying cluster · 30 days
Fewer than three distinct buyers
CEO/CFO purchases · 12 months
2 executive purchases found
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Form 4 raw → Raspberry
The value is in what we do not call a signal.
The SEC XML stores every transaction. Raspberry keeps that evidence, reads the footnotes and separates voluntary open-market activity from vesting, option exercises, gifts, tax withholding, stock purchase and dividend reinvestment plans and pre-programmed 10b5-1 trades.
57
Raw transactions
Everything returned by the filing
29
Voluntary view
P/S trades after deterministic checks
28
Administrative noise
Stored, never alerted
0
10b5-1
Shown as informational
SEC ownership XML facts
- Code
- A
- Shares
- 3,219
- Price
- $0.00
- Footnotes
- —
No filing footnote was attached to this row.
Recent transactions
Voluntary purchases and sales; administrative noise stays hidden.
Hartree Partners, LP
10% owner
PurchaseAlert
- Shares
- 11,013
- Price
- $5.10
- Value
- $56,166
Hartree Partners, LP
10% owner
PurchaseAlert
- Shares
- 2,502
- Price
- $5.10
- Value
- $12,757
Hartree Partners, LP
10% owner
PurchaseAlert
- Shares
- 11,136
- Price
- $5.10
- Value
- $56,794
Hartree Partners, LP
10% owner
PurchaseAlert
- Shares
- 5,317
- Price
- $5.10
- Value
- $27,117
Hartree Partners, LP
10% owner
PurchaseAlert
- Shares
- 91,166
- Price
- $5.50
- Value
- $501,094
Hartree Partners, LP
10% owner
PurchaseAlert
- Shares
- 9,446
- Price
- $5.50
- Value
- $51,953
Hartree Partners, LP
10% owner
PurchaseAlert
- Shares
- 5,198
- Price
- $5.50
- Value
- $28,589
Hartree Partners, LP
10% owner
PurchaseAlert
- Shares
- 52,104
- Price
- $5.99
- Value
- $312,103
Hartree Partners, LP
10% owner
PurchaseAlert
- Shares
- 47,708
- Price
- $5.99
- Value
- $285,742
Hartree Partners, LP
10% owner
PurchaseAlert
- Shares
- 17,842
- Price
- $5.99
- Value
- $106,859
Hartree Partners, LP
10% owner
PurchaseAlert
- Shares
- 600
- Price
- $5.99
- Value
- $3,594
Hartree Partners, LP
10% owner
PurchaseAlert
- Shares
- 4,634
- Price
- $5.99
- Value
- $27,758
Hartree Partners, LP
10% owner
PurchaseAlert
- Shares
- 271,302
- Price
- $5.97
- Value
- $1,619,212
Hartree Partners, LP
10% owner
PurchaseAlert
- Shares
- 288,111
- Price
- $5.88
- Value
- $1,695,101
Hartree Partners, LP
10% owner
PurchaseAlert
- Shares
- 204,789
- Price
- $5.68
- Value
- $1,162,894
Bertaux Brian J.
Chief Financial Officer
PurchaseAlert
- Shares
- 2,000
- Price
- $4.87
- Value
- $9,740
Mansy Loan Nguyen
Director
PurchaseAlert
- Shares
- 1,400
- Price
- $4.97
- Value
- $6,958
Mansy Loan Nguyen
Director
PurchaseAlert
- Shares
- 3,600
- Price
- $4.96
- Value
- $17,856
Parrillo Richard
Director
PurchaseAlert
- Shares
- 1,400
- Price
- $4.97
- Value
- $6,958
Parrillo Richard
Director
PurchaseAlert
- Shares
- 3,600
- Price
- $4.96
- Value
- $17,856
Bulgarino Nicole E
Director
PurchaseAlert
- Shares
- 550
- Price
- $4.85
- Value
- $2,665
Feeler Jeffrey R
Director
PurchaseAlert
- Shares
- 5,100
- Price
- $4.92
- Value
- $25,092
Parrillo Richard
Director
PurchaseAlert
- Shares
- 10,000
- Price
- $4.83
- Value
- $48,257
Prouty Eric A
Director
PurchaseAlert
- Shares
- 5,000
- Price
- $4.84
- Value
- $24,200
Sheriff Alan
Director
PurchaseAlert
- Shares
- 5,200
- Price
- $4.88
- Value
- $25,350
Gaglione Kenneth
President and CEO
PurchaseAlert
- Shares
- 5,000
- Price
- $4.90
- Value
- $24,475
COLEMAN BRIAN F
Former Director
SaleAlert
- Shares
- 484,616
- Price
- $7.40
- Value
- $3,588,097
ABBATECOLA VINCENT P
Director
PurchaseAlert
- Shares
- 3,500
- Price
- $6.79
- Value
- $23,748
| Date | Insider | Transaction | Shares | Price | Value | Reading |
|---|---|---|---|---|---|---|
| Sep 24, 2026 | Hartree Partners, LP 10% owner | Purchase | 118,549 | $5.10 | $604,446 | |
| Sep 23, 2026 | Hartree Partners, LP 10% owner | Purchase | 11,013 | $5.10 | $56,166 | |
| Sep 21, 2026 | Hartree Partners, LP 10% owner | Purchase | 2,502 | $5.10 | $12,757 | |
| Sep 16, 2026 | Hartree Partners, LP 10% owner | Purchase | 11,136 | $5.10 | $56,794 | |
| Sep 02, 2026 | Hartree Partners, LP 10% owner | Purchase | 5,317 | $5.10 | $27,117 | |
| Aug 25, 2026 | Hartree Partners, LP 10% owner | Purchase | 91,166 | $5.50 | $501,094 | |
| Aug 24, 2026 | Hartree Partners, LP 10% owner | Purchase | 9,446 | $5.50 | $51,953 | |
| Aug 12, 2026 | Hartree Partners, LP 10% owner | Purchase | 5,198 | $5.50 | $28,589 | |
| Jul 29, 2026 | Hartree Partners, LP 10% owner | Purchase | 52,104 | $5.99 | $312,103 | |
| Jul 21, 2026 | Hartree Partners, LP 10% owner | Purchase | 47,708 | $5.99 | $285,742 | |
| Jul 20, 2026 | Hartree Partners, LP 10% owner | Purchase | 17,842 | $5.99 | $106,859 | |
| Jul 07, 2026 | Hartree Partners, LP 10% owner | Purchase | 600 | $5.99 | $3,594 | |
| Jul 06, 2026 | Hartree Partners, LP 10% owner | Purchase | 4,634 | $5.99 | $27,758 | |
| Jul 02, 2026 | Hartree Partners, LP 10% owner | Purchase | 271,302 | $5.97 | $1,619,212 | |
| Jul 01, 2026 | Hartree Partners, LP 10% owner | Purchase | 288,111 | $5.88 | $1,695,101 | |
| Jun 30, 2026 | Hartree Partners, LP 10% owner | Purchase | 204,789 | $5.68 | $1,162,894 | |
| May 19, 2026 | Bertaux Brian J. Chief Financial Officer | Purchase | 2,000 | $4.87 | $9,740 | |
| May 14, 2026 | Mansy Loan Nguyen Director | Purchase | 1,400 | $4.97 | $6,958 | |
| May 14, 2026 | Mansy Loan Nguyen Director | Purchase | 3,600 | $4.96 | $17,856 | |
| May 14, 2026 | Parrillo Richard Director | Purchase | 1,400 | $4.97 | $6,958 | |
| May 14, 2026 | Parrillo Richard Director | Purchase | 3,600 | $4.96 | $17,856 | |
| May 14, 2026 | Bulgarino Nicole E Director | Purchase | 550 | $4.85 | $2,665 | |
| May 14, 2026 | Feeler Jeffrey R Director | Purchase | 5,100 | $4.92 | $25,092 | |
| May 13, 2026 | Parrillo Richard Director | Purchase | 10,000 | $4.83 | $48,257 | |
| May 13, 2026 | Prouty Eric A Director | Purchase | 5,000 | $4.84 | $24,200 | |
| May 13, 2026 | Sheriff Alan Director | Purchase | 5,200 | $4.88 | $25,350 | |
| May 13, 2026 | Gaglione Kenneth President and CEO | Purchase | 5,000 | $4.90 | $24,475 | |
| Dec 05, 2025 | COLEMAN BRIAN F Former Director | Sale | 484,616 | $7.40 | $3,588,097 | |
| Nov 17, 2025 | ABBATECOLA VINCENT P Director | Purchase | 3,500 | $6.79 | $23,748 |
“Alert” means a voluntary, unscheduled transaction according to the filing; it is not an investment recommendation. Official source: SEC EDGAR.