Form 4 for HDSN HUDSON TECHNOLOGIES INC /NY
Accepted 2026-01-12 00:00:00 ET · period of report 2026-01-08 · accession 0000925528-26-000002 · SEC index · Original document
Summary rows
Aggregated the way they appear in lists: one row per insider, transaction code and security table.
| X | Filed | Traded | Ticker | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|
| DM | 2026-01-12 | 2026-01-08 | HDSN | Houghton Kathleen | SVP-Sales, Marketing, Dir | F - Tax | $7.10 | -101.1K | 142.1K | -42% | -$717.5K |
| DM | 2026-01-12 | 2026-01-08 | HDSN | Houghton Kathleen | SVP-Sales, Marketing, Dir | M - OptEx | $1.65 | +218.5K | 161.2K | New | +$360.1K |
| DM | 2026-01-12 | 2026-01-08 | HDSN | Houghton Kathleen | SVP-Sales, Marketing, Dir | M - OptEx | $0.00 | -218.5K | 0 | -100% | $0 |
Purchase Sale Sale after option exercise All abbreviations
Every reported transaction
| # | Table | Security | Date | Code | A/D | Shares | Price | Owned after | Own | Exercise / expiry | Underlying | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Common | Common Stock | 2026-01-08 | F | D | 34,382 | $7.10 | 158,618 | D | — | — | |
| 2 | Common | Common Stock | 2026-01-08 | M | A | 50,888 | $3.81 | 193,000 | D | — | — | |
| 3 | Common | Common Stock | 2026-01-08 | M | A | 47,619 | $1.60 | 163,909 | D | — | — | |
| 4 | Common | Common Stock | 2026-01-08 | F | D | 44,873 | $7.10 | 116,290 | D | — | — | |
| 5 | Common | Common Stock | 2026-01-08 | M | A | 120,000 | $0.75 | 161,163 | D | — | — | |
| 6 | Common | Common Stock | 2026-01-08 | F | D | 21,797 | $7.10 | 142,112 | D | — | — | |
| 7 | Derivative | Stock Option | 2026-01-08 | M | D | 50,888 | $0.00 | 0 | D | $3.81 · 2023-02-24 to 2027-02-24 | 50,888 Common Stock | |
| 8 | Derivative | Stock Option | 2026-01-08 | M | D | 47,619 | $0.00 | 0 | D | $1.60 · 2021-03-12 to 2026-03-12 | 47,619 Common Stock | |
| 9 | Derivative | Stock Option | 2026-01-08 | M | D | 120,000 | $0.00 | 0 | D | $0.75 · 2020-12-31 to 2029-12-19 | 120,000 Common Stock |