HUDSON TECHNOLOGIES INC (HDSN) stock: insider trades, news & valuation
Materials · Strong buyingShare price and insider trades
HUDSON TECHNOLOGIES INC insider trading at a glance (Oct 9, 2026): in the past 12 months, 8 insiders bought $6.8M and 1 sold $7.2M of HDSN stock on the open market, including a cluster buy that began May 13, 2026; P/E 25.7 vs. a sector median of 23.3.
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HDSN insider buying and selling by quarter
Open-market purchases (green, above the line) and sales (red, below), by trade date.
| Quarter | Bought | Purchases | Sold | Sales |
|---|---|---|---|---|
| Q4 2026 | — | 0 | — | 0 |
| Q3 2026 | $5.4M | 15 | — | 0 |
| Q2 2026 | $1.4M | 12 | — | 0 |
| Q1 2026 | — | 0 | — | 0 |
| Q4 2025 | $24K | 1 | $7.2M | 2 |
Valuation, profit and volume
Summary
Over the past 12 months, 8 HUDSON TECHNOLOGIES INC /NY insiders reported open-market purchases totaling $6.8M, while 1 insider reported sales totaling $7.2M. The most recent cluster buy began on May 13, 2026, when 6 insiders bought a combined $183K. Among insiders with enough purchase history to measure, Jeffrey R Feeler (Director) has the highest Insider Score at 81. 0 of 2 recorded sales were made under pre-scheduled Rule 10b5-1 trading plans, which are usually less informative than discretionary sales.
HDSN stock news and SEC filings
Recent 8-K filings and headlines. Tone is scored from the headline wording; “Policy” marks regulatory, trade or government topics.
- 8-K Other material event
- 8-K Earnings release
Insider transactions
Open-market purchases and sales.
| Filed | Insider | Type | Shares | Price | Value | Since | Score |
|---|---|---|---|---|---|---|---|
| Sep 28SEC | Hartree Partners, Lp10% Owner | Buy | 118,5495,348,517 held (+2%) | $5.10 | $605K | +0.8% | 21 |
| Sep 23SEC | Hartree Partners, Lp10% Owner | Buy | 11,0135,229,968 held (+0%) | $5.10 | $56K | +0.8% | 21 |
| Sep 23SEC | Hartree Partners, Lp10% Owner | Buy | 2,5025,218,955 held (+0%) | $5.10 | $13K | +0.8% | 21 |
| Sep 18SEC | Hartree Partners, Lp10% Owner | Buy | 11,1365,216,453 held (+0%) | $5.10 | $57K | +0.8% | 21 |
| Sep 4SEC | Hartree Partners, Lp10% Owner | Buy | 5,3175,205,317 held (+0%) | $5.10 | $27K | +0.8% | 21 |
| Aug 26SEC | Hartree Partners, Lp10% Owner | Buy | 91,1665,200,000 held (+2%) | $5.50 | $501K | -6.5% | 21 |
| Aug 26SEC | Hartree Partners, Lp10% Owner | Buy | 9,4465,108,834 held (+0%) | $5.50 | $52K | -6.5% | 21 |
| Aug 14SEC | Hartree Partners, Lp10% Owner | Buy | 5,1985,099,388 held (+0%) | $5.50 | $29K | -6.5% | 21 |
| Jul 31SEC | Hartree Partners, Lp10% Owner | Buy | 52,1045,094,190 held (+1%) | $5.99 | $312K | -14.2% | 21 |
| Jul 22SEC | Hartree Partners, Lp10% Owner | Buy | 47,7085,042,086 held (+1%) | $5.99 | $286K | -14.2% | 21 |
| Jul 22SEC | Hartree Partners, Lp10% Owner | Buy | 17,8424,994,378 held (+0%) | $5.99 | $107K | -14.2% | 21 |
| Jul 8SEC | Hartree Partners, Lp10% Owner | Buy | 4,6344,975,936 held (+0%) | $5.99 | $28K | -14.2% | 21 |
| Jul 8SEC | Hartree Partners, Lp10% Owner | Buy | 6004,976,536 held (+0%) | $5.99 | $4K | -14.2% | 21 |
| Jul 2SEC | Hartree Partners, Lp10% Owner | Buy | 288,1114,700,000 held (+7%) | $5.88 | $1.7M | -12.6% | 21 |
| Jul 2SEC | Hartree Partners, Lp10% Owner | Buy | 271,3024,971,302 held (+6%) | $5.97 | $1.6M | -13.9% | 21 |
| Jul 2SEC | Hartree Partners, Lp10% Owner | Buy | 204,7894,411,889 held (+5%) | $5.68 | $1.2M | -9.5% | 21 |
| May 21SEC | Richard ParrilloDirector | Buy | 10,000195,746 held (+5%) | $4.83 | $48K | +6.4% | 66 |
| May 21SEC | Brian J. BertauxCFO | Buy | 2,000new position | $4.87 | $10K | +5.5% | — |
| May 15SEC | Alan SheriffDirector | Buy | 5,2009,265 held (+128%) | $4.88 | $25K | +5.3% | — |
| May 15SEC | Jeffrey R FeelerDirector | Buy | 5,1009,165 held (+125%) | $4.92 | $25K | +4.5% | 81 |
| May 15SEC | Kenneth GaglioneCEO, President | Buy | 5,000new position | $4.90 | $24K | +4.9% | — |
| May 15SEC | Eric A ProutyDirector | Buy | 5,000153,852 held (+3%) | $4.84 | $24K | +6.2% | — |
| May 15SEC | Richard ParrilloDirector | Buy | 3,60024,195 held (+17%) | $4.96 | $18K | +3.6% | 66 |
| May 15SEC | Loan Nguyen MansyDirector | Buy | 3,60024,195 held (+17%) | $4.96 | $18K | +3.6% | — |
| May 15SEC | Richard ParrilloDirector | Buy | 1,40025,595 held (+6%) | $4.97 | $7K | +3.4% | 66 |
| May 15SEC | Loan Nguyen MansyDirector | Buy | 1,40025,595 held (+6%) | $4.97 | $7K | +3.4% | — |
| May 15SEC | Nicole E BulgarinoDirector | Buy | 55011,048 held (+5%) | $4.85 | $3K | +6.0% | — |
| Dec 15SEC | Brian F ColemanFormer Director | Sell | 484,616426,968 held (−53%) | $7.40 | $3.6M | -30.5% | — |
| Dec 9SEC | Brian F ColemanDirector | Sell | 484,6161,944,312 held (−20%) | $7.40 | $3.6M | -30.5% | — |
| Nov 18SEC | Vincent P AbbatecolaDirector | Buy | 3,500169,748 held (+2%) | $6.79 | $24K | -24.3% | — |
Insiders at HUDSON TECHNOLOGIES INC /NY
| Insider | Bought | Sold | Last filing | Score |
|---|---|---|---|---|
| Hartree Partners, Lp10% Owner | $6.6M | — | Sep 28, 2026 | 21 |
| Brian F ColemanFormer Director | — | $7.2M | Dec 15, 2025 | — |
| Richard ParrilloDirector | $73K | — | May 21, 2026 | 66 |
| Alan SheriffDirector | $25K | — | May 15, 2026 | — |
| Jeffrey R FeelerDirector | $25K | — | May 15, 2026 | 81 |
| Loan Nguyen MansyDirector | $25K | — | May 15, 2026 | — |
| Kenneth GaglioneCEO, President | $24K | — | May 15, 2026 | — |
| Eric A ProutyDirector | $24K | — | May 15, 2026 | — |
| Vincent P AbbatecolaDirector | $24K | — | Nov 18, 2025 | — |
| Brian J. BertauxCFO | $10K | — | May 21, 2026 | — |
| Nicole E BulgarinoDirector | $3K | — | May 15, 2026 | — |
Insider activity at other Materials companies
Same sector, ranked by insider buying in the last 90 days.
HDSN stock: common questions
Are HUDSON TECHNOLOGIES INC /NY insiders buying HDSN stock?
In the past 12 months, 8 insiders reported open-market purchases of HDSN worth $6.8M. The latest was 10% Owner Hartree Partners, Lp bought $605K of HDSN at $5.10.
Are HUDSON TECHNOLOGIES INC /NY insiders selling HDSN stock?
1 insiders reported sales worth $7.2M over the same period.
Where does this data come from?
Every transaction comes from Form 4 filings that insiders must submit to the SEC within two business days of a trade. We pull them from SEC EDGAR every night.
What is HDSN's P/E ratio?
HDSN trades at about 25.7 times trailing earnings, compared with a median of 23.3 for the Materials sector.
What is HDSN's 52-week range?
Over the past year HDSN has traded between $4.84 and $9.51. It last closed at $5.14 on Oct 9, 2026.