How many insider trades does FilingIQ track for HDSN?

FilingIQ tracks 433 Form 4 insider transactions for HDSN (HUDSON TECHNOLOGIES INC /NY), covering filings from Jan 15, 2015 onwards. 2 of those were filed in the last 90 days.

Are HDSN insiders net buyers or net sellers?

Across the full Form 4 history for HDSN, 25 transactions (6%) were open-market purchases and 98 (23%) were open-market sales. Compensatory awards and option exercises are filtered out of these counts.

Where does HDSN insider data come from?

Every transaction shown on this page is sourced directly from SEC EDGAR Form 4 filings. FilingIQ parses the raw XML, normalises insider identity across reporting variations, and scores each trade on its multi-factor composite model.

What sector is HDSN in?

HUDSON TECHNOLOGIES INC /NY (HDSN) is classified in the Basic Materials sector, specifically Specialty Chemicals, with a current market capitalisation of $318.05M.

HDSN insider trading

NasdaqCM Basic Materials

HUDSON TECHNOLOGIES INC /NY — scored insider trade history from SEC Form 4 filings, parsed and contextualised by FilingIQ.

Total Form 4 trades

433

Last 90 days

Buys / sells

6% / 23%

Market cap

$318.05M

About HUDSON TECHNOLOGIES INC /NY

Hudson Technologies, Inc., through its subsidiary, Hudson Technologies Company, provides solutions to recurring problems within the refrigeration industry in the United States. The company offers refrigerant and industrial gas; refrigerant management services consisting primarily of reclamation of refrigerants, laboratory testing through its laboratory, and banking storage services; and RefrigerantSide Services comprising system decontamination to remove moisture, oils, and other contaminants intended to restore systems to designed capacity. It also provides diagnostic services for use in the prediction of potential problems in air conditioning, process cooling, and refrigeration systems; Chiller Chemistry, which integrates several fluid tests of an operating system and the corresponding laboratory results into an engineering report; Fluid Chemistry for use in identification of systems that require further examination; and SmartEnergy OPS, a system for measuring, modifying, and improving the efficiency of energy systems, including air conditioning and refrigeration systems, in industrial and commercial applications. In addition, the company provides a snapshot of a packaged chiller's operating efficiency and health through ChillSmart, a maintenance tool. Further, it is involved in the generation of carbon offset projects. The company serves commercial, industrial, and governmental customers, as well as refrigerant wholesalers, distributors, contractors, and refrigeration equipment manufacturers. Hudson Technologies, Inc. was incorporated in 1991 and is headquartered in Woodcliff Lake, New Jersey.

Company website: www.hudsontech.com

HDSN insider activity at a glance

FilingIQ has scored 433 insider transactions for HDSN since Jan 15, 2015. The most recent filing in our index is dated Apr 10, 2026.

Across the full history, 25 open-market purchases and 98 open-market sales were filed under transaction codes P and S respectively. Compensatory share awards (code A) and option exercises (code M) are tracked separately and not counted here.

The average FilingIQ composite score on HDSN insider trades is 54.2/100, produced by FilingIQ's multi-factor Form 4 model. Model framework documented at methodology.

View live HDSN trades on FilingIQ Raw filings on SEC EDGAR

Other Basic Materials tickers with recent insider activity

Axalta Coating Systems Ltd.

INTERNATIONAL FLAVORS & FRAGRANCES INC

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MATERION Corp

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LyondellBasell Industries N.V.

13F funds holding HDSN

MARATHON CAPITAL MANAGEMENT

$8.20M · 2.1% of AUM

Frequently asked

How many insider trades does FilingIQ track for HDSN?: FilingIQ tracks 433 Form 4 insider transactions for HDSN (HUDSON TECHNOLOGIES INC /NY), covering filings from Jan 15, 2015 onwards. 2 of those were filed in the last 90 days.
Are HDSN insiders net buyers or net sellers?: Across the full Form 4 history for HDSN, 25 transactions (6%) were open-market purchases and 98 (23%) were open-market sales. Compensatory awards and option exercises are filtered out of these counts.
Where does HDSN insider data come from?: Every transaction shown on this page is sourced directly from SEC EDGAR Form 4 filings. FilingIQ parses the raw XML, normalises insider identity across reporting variations, and scores each trade on its multi-factor composite model.
What sector is HDSN in?: HUDSON TECHNOLOGIES INC /NY (HDSN) is classified in the Basic Materials sector, specifically Specialty Chemicals, with a current market capitalisation of $318.05M.

Methodology & sources

Every HDSN insider transaction shown on FilingIQ is parsed directly from a public SEC Form 4 XML filing. Insider identity is normalised across reporting variants (CIK changes, name spellings, related-party indirect holdings). The FilingIQ composite score is documented in full on the team page and algo disclosure. Not investment advice; see disclaimer.