According to recent filings covering the 90 days ending January 13, 2026, the three most significant insider holders at Hudson Technologies are Director Stephen P Mandracchia (489.76K shares), Other Brian F Coleman (426.97K shares), Director Dominic J Monetta (203.05K shares).
| Holder | Position | Shares | Report Date |
|---|---|---|---|
| Stephen P Mandracchia | 489,756 | 31 May, 2022 | |
| Brian F Coleman | 426,968 | 15 Dec, 2025 | |
| Dominic J Monetta | 203,049 | 15 Sep, 2021 | |
| Richard Parrillo | 185,746 | 20 Jun, 2025 | |
| Vincent P Abbatecola | 169,748 | 18 Nov, 2025 | |
| Kathleen Houghton | Sr. Vp Sales And Marketing | 158,618 | 12 Jan, 2026 |
| Eric A Prouty | 148,852 | 01 Aug, 2025 | |
| Otto C Morch | 87,366 | 06 Jul, 2022 | |
| Kenneth Gaglione | Vp Operations | 82,354 | 14 Sep, 2023 |
| Nat Krishnamurti | Cfo | 25,207 | 10 Nov, 2022 |
| Loan Nguyen Mansy | 20,595 | 20 Jun, 2025 | |
| Nicole E Bulgarino | 10,498 | 20 Jun, 2025 | |
| Richard Damian Caruso | 6,573 | 02 Jul, 2021 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 08 Jan, 2026 | Kathleen Houghton | Common Stock | A | 120,000 | $0.75 | 161,163 | D | M |
| 08 Jan, 2026 | Kathleen Houghton | Common Stock | A | 47,619 | $1.60 | 163,909 | D | M |
| 08 Jan, 2026 | Kathleen Houghton | Common Stock | D | 44,873 | $7.10 | 116,290 | D | F |
| 08 Jan, 2026 | Kathleen Houghton | Common Stock | A | 50,888 | $3.81 | 193,000 | D | M |
| 08 Jan, 2026 | Kathleen Houghton | Common Stock | D | 34,382 | $7.10 | 158,618 | D | F |
| 08 Jan, 2026 | Kathleen Houghton | Common Stock | D | 21,797 | $7.10 | 142,112 | D | F |
| 05 Dec, 2025 | Brian F Coleman | Common Stock | D | 484,616 | $7.40 | 1,944,312 | D | S |
| 05 Dec, 2025 | Brian F Coleman | - | - | 426,968 | D | |||
| 05 Dec, 2025 | Brian F Coleman | Common Stock | D | 484,616 | $7.40 | 426,968 | D | S |
| 17 Nov, 2025 | Vincent P Abbatecola | - | - | 169,748 | D | |||
| 17 Nov, 2025 | Vincent P Abbatecola | Common Stock | A | 3,500 | $6.78 | 169,748 | D | P |
| 24 Sep, 2025 | Vincent P Abbatecola | Common Stock | A | 4,744 | $7.35 | 169,767 | D | M |
| 24 Sep, 2025 | Vincent P Abbatecola | Common Stock | D | 3,519 | $9.91 | 166,248 | D | F |
| 31 Jul, 2025 | Eric A Prouty | Common Stock | D | 3,713 | $9.39 | 148,852 | D | F |
| 31 Jul, 2025 | Eric A Prouty | - | - | 148,852 | D | |||
| 31 Jul, 2025 | Eric A Prouty | Common Stock | A | 4,744 | $7.35 | 152,565 | D | M |
| 31 Jul, 2025 | Eric A Prouty | - | - | 152,565 | D | |||
| 18 Jun, 2025 | Vincent P Abbatecola | Common Stock | A | 3,182 | $0.00 | 165,023 | D | A |
| 18 Jun, 2025 | Eric A Prouty | Common Stock | A | 3,182 | $0.00 | 147,821 | D | A |
| 18 Jun, 2025 | Richard Parrillo | - | - | 185,746 | D |