Insider Tracker SEC Form 4 insider trades
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HDSN

HUDSON TECHNOLOGIES INC

Industrials Machinery, Equipment & Supplies Market cap: $216.3M All insider activity → Quote and statistics → Sign in to watch HDSN Sign in to set a price alert

AI summary CEO, CFO, and all board members make open-market share purchases following Q1 results and strategic updates

80
Insider Score Band 80+
Research score
67
AI adjustment
+13

Research score, not a recommendation.

Total bought$209.5K11 Form 4 purchases
Distinct insiders8open-market buyers
Lead insiderGaglione KennethCEO
Cluster window2026-05-13 → 2026-05-19active

Market data

Live quote and chart from Yahoo Finance, loaded through this server. Insider purchases are marked on the chart.

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Why this score

Research score: a weighted blend of the five factors, times the routine and offering discounts, minus the selling penalty.

Breadth number & diversity of participating insiders
100%
Seniority executive rank of buyers (CEO/CFO/Director)
86%
Commitment purchase size relative to company & holdings
77%
Context buying into stock weakness signals conviction
100%
Timing coordinated purchases within a tight window
99%
Routine-purchase discount × 1.00
Company-type / offering discount × 1.00
Net insider selling penalty − 0

Why are they buying?

AI · discretionary · catalyst explicit · documented

Management and the board explicitly stated that their open-market purchases reflect confidence in the strength of the business, the opportunities ahead, and their strategy to drive sustainable growth and shareholder value.

The insider buying cluster occurred shortly after the company reported first quarter 2026 financial results featuring 9% revenue growth and announced that members of the board and senior management had increased their positions via open market transactions.

Stock Price & Insider Purchase History

Daily close price with open-market insider purchases plotted over time

Loading price history…

Transactions

11 Form 4 trades · 8 insiders Sign in to download CSV
Purchases in this cluster, grouped by insider, largest first
Date Insider Role Shares Price Value Filing
2026-05-13 → 2026-05-14 Parrillo Richard 4 purchases with a 63-day result · median -8.7% Director 15,000 $4.87 avg $73.1K
2026-05-13 Parrillo Richard 10,000 $4.83 $48.3K SEC filing for Parrillo Richard (opens in a new tab)
2026-05-14 Parrillo Richard 1,400 $4.97 $7.0K SEC filing for Parrillo Richard (opens in a new tab)
2026-05-14 Parrillo Richard 3,600 $4.96 $17.9K SEC filing for Parrillo Richard (opens in a new tab)
2026-05-13 Sheriff Alan history of Sheriff Alan's purchases Director 5,200 $4.88 $25.4K SEC filing for Sheriff Alan (opens in a new tab)
2026-05-14 Feeler Jeffrey R history of Feeler Jeffrey R's purchases Director 5,100 $4.92 $25.1K SEC filing for Feeler Jeffrey R (opens in a new tab)
2026-05-14 Mansy Loan Nguyen history of Mansy Loan Nguyen's purchases Director 5,000 $4.96 avg $24.8K
2026-05-14 Mansy Loan Nguyen 1,400 $4.97 $7.0K SEC filing for Mansy Loan Nguyen (opens in a new tab)
2026-05-14 Mansy Loan Nguyen 3,600 $4.96 $17.9K SEC filing for Mansy Loan Nguyen (opens in a new tab)
2026-05-13 Gaglione Kenneth history of Gaglione Kenneth's purchases CEO 5,000 $4.90 $24.5K SEC filing for Gaglione Kenneth (opens in a new tab)
2026-05-13 Prouty Eric A 5 purchases with a 63-day result · median -28.5% Director 5,000 $4.84 $24.2K SEC filing for Prouty Eric A (opens in a new tab)
2026-05-19 Bertaux Brian J. history of Bertaux Brian J.'s purchases CFO 2,000 $4.87 $9.7K SEC filing for Bertaux Brian J. (opens in a new tab)
2026-05-14 Bulgarino Nicole E history of Bulgarino Nicole E's purchases Director 550 $4.85 $2.7K SEC filing for Bulgarino Nicole E (opens in a new tab)
Total $209.5K

Other buying runs at HDSN

A run ends after a pause in the buying, so one company can have several. Returns are the stock's return minus its benchmark's (IWM for small companies, SPY otherwise), from the first open after the run became a cluster. Past results, not a forecast.

After this run became a cluster: 21 days +8.1%63 days +4.5%126 days –

Other insider buying runs at this company, newest first, with the return against the benchmark that followed
Window Insiders Total Score 21 days63 days126 days Status
2018-05-23 → 2018-05-30 3 $110.8K 61 -7.9%-24.1%-44.6% closed
2018-03-15 4 $55.1K 52 -17.1%-65.1%-84.1% closed