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Hudson Technologies (HDSN) Stock Price, News & Analysis

HDSN NASDAQ
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Price Move History

Daily moves over 5%
14 252 sessions, September 12, 2025 to September 14, 2026
Largest daily move
-22.4% close of November 6, 2025
1-year change
-47.5% closing prices, September 12, 2025 to September 14, 2026
5-year change
+63% closing prices, September 14, 2021 to September 14, 2026

Company Description

Hudson Technologies, Inc. (NASDAQ: HDSN) operates in the Heating, Ventilation, Air Conditioning and Refrigeration (HVACR) industry as a provider of refrigerant products and related services. According to the company’s public disclosures, Hudson has focused for nearly three decades on refrigerant recovery, reclamation and lifecycle management, with its products and services primarily used in commercial air conditioning, industrial processing and refrigeration systems.

Hudson Technologies is described in its filings as a New York corporation with common stock listed on the Nasdaq Capital Market under the symbol HDSN. The company reports that it has become one of the first and largest refrigerant reclaimers in the United States through multimillion dollar investments in plants and advanced separation technology. This technology is used to recover a wide variety of refrigerants and restore them to Air-Conditioning, Heating, and Refrigeration Institute (AHRI) standards for reuse as certified EMERALD Refrigerants™.

Core products and services

Based on the company’s own descriptions, Hudson’s offerings include:

  • Refrigerant and industrial gas sales used in commercial air conditioning, industrial processing and refrigeration systems.
  • Refrigerant management services, consisting primarily of reclamation of refrigerants that have been recovered from field systems.
  • RefrigerantSide® Services, which are performed at a customer’s site and consist of system decontamination to remove moisture, oils and other contaminants from refrigeration and cooling equipment.
  • SmartEnergy OPS®, a web-based real-time continuous monitoring service applicable to a facility’s refrigeration systems and other energy systems.
  • Chiller Chemistry® and Chill Smart® services, which the company describes as predictive and diagnostic service offerings.
  • Carbon offset projects generated as a component of the company’s products and services.

Hudson also references ownership of a web-based real-time monitoring service used in facility refrigeration and other energy systems, aligning with its SmartEnergy OPS® offering. These services are positioned around improving system performance, monitoring energy use and supporting responsible refrigerant management.

Refrigerant reclamation and lifecycle management

The company repeatedly highlights its role in refrigerant reclamation. Public statements note that Hudson invests in advanced separation technology to recover and reprocess a wide variety of refrigerants to AHRI standards. The company emphasizes the aftermarket supply chain of recovered refrigerant as essential to reclamation and responsible refrigerant management, particularly as regulatory frameworks such as the AIM Act phase down the supply of virgin HFC refrigerants.

Hudson’s refrigerant lifecycle management activities, as described in its news releases, include refrigerant buyback, sales and distribution, cylinder exchange, onsite recovery and reclamation. Through acquisitions, such as the purchase of the business assets of Denver Refrigerants, Inc. (doing business as Refrigerants Inc.), Hudson has expanded its recovery network and geographic footprint, as well as access to contractors and technicians who recover and return aftermarket refrigerant.

Customer and contract relationships

According to company announcements, Hudson manages and supplies refrigerants, compressed gases, cylinders and related items to U.S. military commands and installations and federal civilian agencies under an indefinite delivery, indefinite quantity contract with the U.S. Defense Logistics Agency (DLA). The company notes that primary users under this contract include the U.S. Army, Navy, Air Force and Marine Corps, and that it has served as prime contractor to the DLA since 2016.

Hudson also reports participation in pilot programs and partnerships focused on refrigerant recovery and reclamation. Examples include selection by the California Air Resources Board’s REFRESH pilot program and a Refrigerant Recovery and Reclamation pilot with the DC Sustainable Energy Utility. In these programs, Hudson works with HVAC contractors, provides training on recovery best practices, supplies storage containers for used refrigerants, and offers financial incentives for recovered refrigerant in addition to program incentives.

Capital structure and credit facilities

Hudson’s SEC filings indicate that its common stock has a par value of $0.01 per share and is registered on the Nasdaq Capital Market. The company has also disclosed a revolving credit facility with Wells Fargo Bank, National Association, as administrative agent and lender. A Third Amendment to the Amended and Restated Credit Agreement reduced the amount of revolving borrowings that may be made under the facility and adjusted certain sublimits and thresholds, as detailed in the filing.

In addition, Hudson’s board of directors has authorized share repurchase programs, including an increase in the amount of common stock that may be repurchased in specified calendar years. Under these programs, the company may repurchase shares through open market transactions, Rule 10b5-1 trading plans or privately negotiated transactions, subject to market conditions and other factors.

Management and governance

Recent Form 8-K filings describe changes in senior leadership and board composition. Hudson reported that its long-serving Chairman, President and Chief Executive Officer stepped down from those roles, and that the Chief Financial Officer assumed Chief Executive Officer responsibilities on an interim basis. Subsequently, the board appointed a new Chairman of the Board, President and Chief Executive Officer, effective on a specified date, and entered into an employment agreement outlining compensation, term, non-compete obligations and severance provisions.

The company has also disclosed director resignations that, according to its filings, were not the result of any disagreement with the company as referenced in Item 5.02(a) of Form 8-K. These governance disclosures provide investors with information about leadership transitions and related contractual arrangements.

Regulatory and environmental context

Hudson’s public communications frequently connect its business to environmental and climate considerations. The company notes that it participates in programs funded through initiatives such as the F-gas Reduction Incentive Program, which are designed to alleviate barriers to adopting climate-friendly refrigerant technologies and to reduce emissions of high global warming potential refrigerants by increasing recovery and reclamation.

In partnership announcements, Hudson cites external research indicating that refrigerant recovery, reclamation and reuse can significantly reduce emissions compared to using newly manufactured refrigerant. The company describes its activities as contributing to a circular refrigerant economy by recovering refrigerants during servicing, preventing venting into the atmosphere, and returning reclaimed product to the market.

Stock information and reporting

Hudson Technologies files periodic and current reports with the U.S. Securities and Exchange Commission under its Commission File Number 1-13412. Its SEC filings include financial statements, management discussion and analysis, details of material contracts, credit agreements, executive employment arrangements, and other events such as acquisitions, contract awards and share repurchase authorizations.

Investors researching HDSN stock can review these filings, along with the company’s news releases, to understand Hudson’s operations in refrigerant and industrial gas sales, reclamation services, onsite system decontamination, monitoring and diagnostic services, and its participation in government contracts and environmental programs related to refrigerant management.

Stock Performance

$5.17
-2.91%
0.16
Last updated: September 15, 2026 at 15:57
-47.5%
Performance 1 year
$217.8M

Hudson Technologies (HDSN) closed at $5.33 on September 14, 2026. Over the past 12 months, the price has lost 47.5%.

See what a $1,000 investment in HDSN would be worth today

HDSN Metrics & Rankings

Price returns through September 14, 2026. Month-to-date and YTD include the first trading day. Ranking links may use different dates.

Latest News

Hudson Technologies has 10 recent news articles. Of the recent coverage, 5 articles coincided with positive price movement and 5 with negative movement. Key topics include earnings, conferences, earnings date. View all HDSN news →

SEC Filings

Hudson Technologies has filed 5 recent SEC filings, including 3 Form 4, 1 Form 10-Q, 1 Form 8-K. The most recent filing was submitted on September 4, 2026. SEC filings provide transparency into a company's financial condition, material events, and regulatory compliance. View all HDSN SEC filings →

Insider Radar

Net Buyers
90-Day Summary
998,217
Shares Bought
0
Shares Sold
12
Transactions
Most Recent Transaction
Hartree Partners, LP (10% Owner) bought 5,317 shares @ $5.10 on September 2, 2026

Insider buying activity at Hudson Technologies over the past 90 days may reflect management confidence in the company's direction. Institutional investors and analysts often monitor insider purchases as a potential bullish indicator for the stock.

Based on SEC Form 4 filings over the last 90 days.

Financial Highlights

Hudson Technologies generated $246.6M in revenue in FY2025, retaining a 25.2% gross margin, operating income reached $18.6M (7.5% operating margin), and net income was $16.7M, reflecting a 6.8% net profit margin. Diluted earnings per share stood at $0.37. The company generated -$3.2M in operating cash flow. With a current ratio of 3.26, the balance sheet reflects a strong liquidity position.

$246.6M
Revenue (FY2025)
$16.7M
Net Income (FY2025)
-$3.2M
Operating Cash Flow

Upcoming Events

SEP
21
September 21, 2026 Marketing

Climate Week panel

Hudson-hosted panel at NASDAQ MarketSite for Climate Week NYC on refrigerant supply; in-person registration limited, first-come.
NOV
29
November 29, 2026 Operations

Bridge contract expiration

Bridge modification extends Hudson's DLA refrigerant supply and services contract through Nov 29, 2026, maintaining uninterrupted service.
FEB
28
February 28, 2027 Operations

First optional extension end

First three-month option could extend the DLA refrigerant contract through Feb 28, 2027, if DLA elects to exercise the option.
MAY
29
May 29, 2027 Operations

Second optional extension end

Second three-month option could extend the DLA refrigerant contract through May 29, 2027, contingent on DLA exercising the option.
JAN
01
January 1, 2029 Regulatory

AIM Act supply reduction

AIM Act phase-down reduces virgin HFC supply in 2029; impacts reclaimed refrigerant market
AUG
04
August 4, 2031 Operations

IDIQ term expiration

IDIQ contract initial term ends on Aug 4, 2031; $210M DLA award for refrigerant supplies; affects revenue and renewal planning.
JUL
31
July 31, 2036 Operations

IDIQ option expiry

DLA holds five-year option through Jul 31, 2036 on $210M IDIQ; extension decision affects future revenue and contract backlog.

Hudson Technologies has 7 upcoming scheduled events. The next event, "Climate Week panel", is scheduled for September 21, 2026 (in 6 days). Investors can track these dates to stay informed about potential catalysts that may affect the HDSN stock price.

Short Interest History

Last 12 Months

Short interest in Hudson Technologies (HDSN) currently stands at 3.2 million shares, up 41.1% from the previous reporting period, representing 8.7% of the float. Since September 2025, short interest has increased by 196.1%.

Days to Cover History

Last 12 Months

Days to cover for Hudson Technologies (HDSN) currently stands at 3.6 days, down 14.6% from the previous period. This days-to-cover ratio represents a balanced liquidity scenario for short positions. The days to cover has decreased 22.9% over the past year, suggesting improved liquidity for short covering. The ratio has shown significant volatility over the period, ranging from 1.9 to 6.0 days.

HDSN Company Profile & Sector Positioning

Hudson Technologies (HDSN) operates in the Specialty Chemicals industry within the broader Basic Materials sector and is listed on the NASDAQ.

Investors comparing HDSN often look at related companies in the same sector, including Koppers Holdings, Inc. (KOP), Mativ Holdings, Inc. (MATV), Orion S.A. (OEC), Lightwave Logic, Inc. (LWLG), and Kronos Worldwide, Inc. (KRO). Comparing financial metrics, valuation ratios, and stock performance across these peers can help investors evaluate HDSN's relative position within its industry.

Frequently Asked Questions

What is the current stock price of Hudson Technologies (HDSN)?

The current stock price of Hudson Technologies (HDSN) is $5.17 as of September 15, 2026.

What is the market cap of Hudson Technologies (HDSN)?

The market cap of Hudson Technologies (HDSN) is approximately $217.8M. Learn more about what market capitalization means .

What is the revenue of Hudson Technologies (HDSN) stock?

The FY2025 revenue of Hudson Technologies (HDSN) is $246.6M, from its most recent completed fiscal year.

What is the net income of Hudson Technologies (HDSN)?

The FY2025 net income of Hudson Technologies (HDSN) is $16.7M, from its most recent completed fiscal year.

What is the earnings per share (EPS) of Hudson Technologies (HDSN)?

The diluted earnings per share (EPS) of Hudson Technologies (HDSN) is $0.37 for FY2025, its most recent completed fiscal year. Learn more about EPS .

What is the operating cash flow of Hudson Technologies (HDSN)?

The operating cash flow of Hudson Technologies (HDSN) is -$3.2M. Learn about cash flow.

What is the profit margin of Hudson Technologies (HDSN)?

The net profit margin of Hudson Technologies (HDSN) is 6.8%. Learn about profit margins.

What is the operating margin of Hudson Technologies (HDSN)?

The operating profit margin of Hudson Technologies (HDSN) is 7.5%. Learn about operating margins.

What is the gross margin of Hudson Technologies (HDSN)?

The gross profit margin of Hudson Technologies (HDSN) is 25.2%. Learn about gross margins.

What is the current ratio of Hudson Technologies (HDSN)?

The current ratio of Hudson Technologies (HDSN) is 3.26, indicating the company's ability to pay short-term obligations. Learn about liquidity ratios.

What is the gross profit of Hudson Technologies (HDSN)?

The gross profit of Hudson Technologies (HDSN) is $62.1M for FY2025, its most recent completed fiscal year.

What is the operating income of Hudson Technologies (HDSN)?

The operating income of Hudson Technologies (HDSN) is $18.6M. Learn about operating income.

What does Hudson Technologies Inc do?

According to its public disclosures, Hudson Technologies Inc provides refrigerant and industrial gas sales, refrigerant management services focused on reclamation, and RefrigerantSideae Services that decontaminate systems at customer sites. The company also offers web-based monitoring, predictive and diagnostic services for refrigeration and other energy systems and generates carbon offset projects as part of its activities.

In which industry does Hudson Technologies operate?

Hudson Technologies operates in the Heating, Ventilation, Air Conditioning and Refrigeration (HVACR) space and is classified in the Refrigeration Equipment and Supplies Merchant Wholesalers segment of the wholesale trade sector. Its products and services are primarily used in commercial air conditioning, industrial processing and refrigeration systems.

How is Hudson Technologies involved in refrigerant reclamation?

The company states that it is one of the first and largest refrigerant reclaimers in the United States. It has invested in plants and advanced separation technology to recover a wide variety of refrigerants and restore them to Air-Conditioning, Heating, and Refrigeration Institute standards for reuse as certified EMERALD Refrigerantsae.

What are RefrigerantSideae Services offered by Hudson Technologies?

RefrigerantSideae Services are described by Hudson Technologies as services performed at a customers site that consist of system decontamination. These services remove moisture, oils and other contaminants from refrigeration and cooling systems to help maintain proper operation and support refrigerant management.

What is SmartEnergy OPSae from Hudson Technologies?

SmartEnergy OPSae is described by the company as a web-based real-time continuous monitoring service. It is applicable to a facilitys refrigeration systems and other energy systems, providing ongoing visibility into system performance and energy use.

Does Hudson Technologies have government or military contracts?

Yes. Hudson Technologies has disclosed that it serves as prime contractor to the U.S. Defense Logistics Agency under an indefinite delivery, indefinite quantity contract. The contract covers the management and supply of refrigerants, compressed gases, cylinders and related items to U.S. military commands, installations and federal civilian agencies.

How does Hudson Technologies participate in environmental and climate-focused programs?

The company reports participation in initiatives such as the California Air Resources Boards REFRESH pilot program and a Refrigerant Recovery and Reclamation pilot with the DC Sustainable Energy Utility. In these programs, Hudson works with HVAC contractors, provides training on refrigerant recovery best practices, supplies storage containers and offers financial incentives for recovered refrigerant to support greenhouse gas emissions reduction goals.

What stock exchange is Hudson Technologies listed on and what is its ticker?

Hudson Technologies Incs common stock is registered on the Nasdaq Capital Market under the ticker symbol HDSN, as indicated in its SEC filings.

What recent corporate actions has Hudson Technologies disclosed?

Recent Form 8-K filings describe several corporate actions, including leadership changes in the roles of Chairman, President and Chief Executive Officer, an employment agreement with a new CEO, amendments to a revolving credit facility with Wells Fargo Bank, and board-approved share repurchase authorizations for specified calendar years.

How does Hudson Technologies describe its carbon offset activities?

Hudson states that, as a component of its products and services, it generates carbon offset projects. These projects are associated with its refrigerant recovery, reclamation and related environmental services, although specific project details are not provided in the summarized disclosures.