HDSN insider transaction filings
HUDSON TECHNOLOGIES INC /NY — 50 most recent Form 4 filings from SEC EDGAR, normalized by FilingPulse. Latest filing: 2026-09-18. Screen HDSN transaction legs live →
Insider transaction summary — last 90 days
2026-06-24 to 2026-09-22, from the filings listed below: 8 Form 4 filings. Counts and totals are arithmetic on values as filed — descriptive data, not a recommendation.
- Open-market purchases (code P, non-derivative): 13 legs across 8 filings by 1 insider — 1,009,353 shares, $5,878,810 total (shares × price as filed).
- Open-market sales (code S, non-derivative): none reported.
- Other reported legs (grants, option exercises, tax withholding, gifts, derivative-security transactions, …): 0.
- Largest priced transaction: purchase of 288,111 shares @ $5.88 ($1,695,101) by Hartree Partners, LP, filed 2026-07-02.
By insider — same window
Open-market purchase/sale legs on non-derivative securities, grouped by the filing's reporting owner(s); joint filings appear once. Dollar totals cover priced legs only (shares × price as filed). Ordered by priced transaction value, largest first.
| Insider | Filings | Purchases (P) | Sales (S) | Other legs |
|---|---|---|---|---|
| Hartree Partners, LP — 10% owner | 8 | 13 legs · 1,009,353 sh · $5,878,810 | — | — |
Recent Form 4 filings — HUDSON TECHNOLOGIES INC /NY
| Filed | Form | Insider | Reported transactions | Source |
|---|---|---|---|---|
| 2026-09-18 | 4 | Hartree Partners, LP — 10% owner | Purchase (P): 11,136 @ $5.10 | EDGAR |
| 2026-09-04 | 4 | Hartree Partners, LP — 10% owner | Purchase (P): 5,317 @ $5.10 | EDGAR |
| 2026-08-26 | 4 | Hartree Partners, LP — 10% owner | Purchase (P): 9,446 @ $5.50 · Purchase (P): 91,166 @ $5.50 | EDGAR |
| 2026-08-14 | 4 | Hartree Partners, LP — 10% owner | Purchase (P): 5,198 @ $5.50 | EDGAR |
| 2026-07-31 | 4 | Hartree Partners, LP — 10% owner | Purchase (P): 52,104 @ $5.99 | EDGAR |
| 2026-07-22 | 4 | Hartree Partners, LP — 10% owner | Purchase (P): 17,842 @ $5.99 · Purchase (P): 47,708 @ $5.99 | EDGAR |
| 2026-07-08 | 4 | Hartree Partners, LP — 10% owner | Purchase (P): 4,634 @ $5.99 · Purchase (P): 600 @ $5.99 | EDGAR |
| 2026-07-02 | 4 | Hartree Partners, LP — 10% owner | Purchase (P): 204,789 @ $5.68 · Purchase (P): 288,111 @ $5.88 · Purchase (P): 271,302 @ $5.97 | EDGAR |
| 2026-06-22 | 4 | Mansy Loan Nguyen — Director | Grant/award (A): 8,881 @ $0 · Grant/award (A): 21,186 (derivative) @ $0 | EDGAR |
| 2026-06-22 | 4 | Sheriff Alan — Director | Grant/award (A): 3,219 @ $0 · Grant/award (A): 15,360 (derivative) @ $0 | EDGAR |
| 2026-06-22 | 4 | Bulgarino Nicole E — Director | Grant/award (A): 31,780 (derivative) @ $0 | EDGAR |
| 2026-06-22 | 4 | Parrillo Richard — Director | Grant/award (A): 31,780 (derivative) @ $0 | EDGAR |
| 2026-06-22 | 4 | Prouty Eric A — Director | Grant/award (A): 4,440 @ $0 · Grant/award (A): 21,186 (derivative) @ $0 | EDGAR |
| 2026-06-22 | 4 | Feeler Jeffrey R — Director | Grant/award (A): 3,219 @ $0 · Grant/award (A): 15,360 (derivative) @ $0 | EDGAR |
| 2026-05-21 | 4 | Bertaux Brian J. — Chief Financial Officer | Purchase (P): 2,000 @ $4.87 | EDGAR |
| 2026-05-21 | 4/A | Parrillo Richard — Director | Purchase (P): 10,000 @ $4.83 | EDGAR |
| 2026-05-15 | 4 | Mansy Loan Nguyen — Director | Purchase (P): 3,600 @ $4.96 · Purchase (P): 1,400 @ $4.97 | EDGAR |
| 2026-05-15 | 4 | Gaglione Kenneth — President and CEO, Director | Purchase (P): 5,000 @ $4.89 | EDGAR |
| 2026-05-15 | 4 | Sheriff Alan — Director | Purchase (P): 5,200 @ $4.88 | EDGAR |
| 2026-05-15 | 4 | Bulgarino Nicole E — Director | Purchase (P): 550 @ $4.84 | EDGAR |
| 2026-05-15 | 4 | Parrillo Richard — Director | Purchase (P): 3,600 @ $4.96 · Purchase (P): 1,400 @ $4.97 | EDGAR |
| 2026-05-15 | 4 | Prouty Eric A — Director | Purchase (P): 5,000 @ $4.84 | EDGAR |
| 2026-05-15 | 4 | Feeler Jeffrey R — Director | Purchase (P): 5,100 @ $4.92 | EDGAR |
| 2026-04-14 | 4 | Sheriff Alan — Director | Grant/award (A): 4,065 @ $0 | EDGAR |
| 2026-04-14 | 4 | Feeler Jeffrey R — Director | Grant/award (A): 4,065 @ $0 | EDGAR |
| 2026-01-12 | 4 | Houghton Kathleen — Sr. VP-Sales and Marketing, Director | Option exercise (M): 120,000 @ $0.75 · Tax withholding (F): 44,873 @ $7.10 · Option exercise (M): 47,619 @ $1.60 · Tax withholding (F): 21,797 @ $7.10 · Option exercise (M): 50,888 @ $3.81 · Tax withholding (F): 34,382 @ $7.10 · +3 more | EDGAR |
| 2025-12-15 | 4/A | COLEMAN BRIAN F | Sale (S): 484,616 @ $7.40 | EDGAR |
| 2025-12-09 | 4 | COLEMAN BRIAN F — Director | Sale (S): 484,616 @ $7.40 | EDGAR |
| 2025-11-25 | 4 | Gaglione Kenneth — President and CEO, Director | Grant/award (A): 216,309 (derivative) @ $0 | EDGAR |
| 2025-11-18 | 4 | ABBATECOLA VINCENT P — Director | Purchase (P): 3,500 @ $6.79 | EDGAR |
| 2025-09-26 | 4 | ABBATECOLA VINCENT P — Director | Option exercise (M): 4,744 @ $7.35 · Tax withholding (F): 3,519 @ $9.91 · Option exercise (M): 4,744 (derivative) @ $0 | EDGAR |
| 2025-08-01 | 4 | Prouty Eric A — Director | Option exercise (M): 4,744 @ $7.35 · Tax withholding (F): 3,713 @ $9.39 · Option exercise (M): 4,744 (derivative) @ $0 | EDGAR |
| 2025-06-20 | 4 | Mansy Loan Nguyen — Director | Grant/award (A): 6,365 @ $0 · Grant/award (A): 13,698 (derivative) @ $0 | EDGAR |
| 2025-06-20 | 4 | Bulgarino Nicole E — Director | Grant/award (A): 3,182 @ $0 · Grant/award (A): 13,698 (derivative) @ $0 | EDGAR |
| 2025-06-20 | 4 | Parrillo Richard — Director | Grant/award (A): 3,182 @ $0 · Grant/award (A): 13,698 (derivative) @ $0 | EDGAR |
| 2025-06-20 | 4 | Prouty Eric A — Director | Grant/award (A): 3,182 @ $0 · Grant/award (A): 13,698 (derivative) @ $0 | EDGAR |
| 2025-06-20 | 4 | ABBATECOLA VINCENT P — Director | Grant/award (A): 3,182 @ $0 · Grant/award (A): 13,698 (derivative) @ $0 | EDGAR |
| 2025-03-17 | 4 | Bertaux Brian J. — VP and CFO | Grant/award (A): 55,109 (derivative) @ $0 | EDGAR |
| 2025-03-17 | 4 | Houghton Kathleen — Sr. VP-Sales and Marketing, Director | Grant/award (A): 72,477 (derivative) @ $0 | EDGAR |
| 2025-03-17 | 4 | COLEMAN BRIAN F — President, CEO, Director | Grant/award (A): 140,813 (derivative) @ $0 | EDGAR |
| 2024-11-12 | 4 | ABBATECOLA VINCENT P — Director | Purchase (P): 2,500 @ $5.98 | EDGAR |
| 2024-06-21 | 4 | Mansy Loan Nguyen — Director | Grant/award (A): 5,593 @ $0 · Grant/award (A): 14,493 (derivative) @ $0 | EDGAR |
| 2024-06-21 | 4 | Bulgarino Nicole E — Director | Grant/award (A): 3,915 @ $0 · Grant/award (A): 14,493 (derivative) @ $0 | EDGAR |
| 2024-06-21 | 4 | Parrillo Richard — Director | Grant/award (A): 2,796 @ $0 · Grant/award (A): 14,493 (derivative) @ $0 | EDGAR |
| 2024-06-21 | 4 | Prouty Eric A — Director | Grant/award (A): 21,739 (derivative) @ $0 | EDGAR |
| 2024-06-21 | 4 | ABBATECOLA VINCENT P — Director | Grant/award (A): 25,362 (derivative) @ $0 | EDGAR |
| 2024-06-18 | 4 | ABBATECOLA VINCENT P — Director | Sale (S): 10,000 @ $9.20 | EDGAR |
| 2024-06-14 | 4 | ABBATECOLA VINCENT P — Director | Option exercise (M): 8,276 @ $3.40 · Tax withholding (F): 3,055 @ $9.21 · Option exercise (M): 8,276 (derivative) @ $0 | EDGAR |
| 2024-02-28 | 4 | Krishnamurti Nat — CFO | Grant/award (A): 7,378 (derivative) @ $0 | EDGAR |
| 2024-02-28 | 4 | COLEMAN BRIAN F — President, CEO, Director | Grant/award (A): 20,067 (derivative) @ $0 | EDGAR |
Recent 8-K events — HUDSON TECHNOLOGIES INC /NY
| Filed | Form | Items reported | Source |
|---|---|---|---|
| 2026-08-06 | 8-K | 8.01 — Other Events 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-08-05 | 8-K | 2.02 — Results of Operations and Financial Condition 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-06-12 | 8-K | 8.01 — Other Events | EDGAR |
| 2026-06-11 | 8-K | 5.07 — Submission of Matters to a Vote of Security Holders | EDGAR |
| 2026-05-28 | 8-K | 8.01 — Other Events 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-05-20 | 8-K | 1.01 — Entry into a Material Definitive Agreement 2.03 — Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-05-18 | 8-K | 7.01 — Regulation FD Disclosure 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-05-06 | 8-K | 2.02 — Results of Operations and Financial Condition 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-04-13 | 8-K | 5.02 — Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers 7.01 — Regulation FD Disclosure 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-03-18 | 8-K | 5.02 — Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers 8.01 — Other Events 9.01 — Financial Statements and Exhibits | EDGAR |
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