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1 insider bought €1.8M of shares over the last 90 days, the latest filed 28 Sept 2026.
Hudson Technologies INC /ny: what insiders have been doing
Hudson Technologies INC /ny belongs to the Energy sector. Filings by its managers are published through SEC (Form 4). Between 18 October 2025 and 18 October 2026, 12 insiders published 27 filings.
Purchases and sales both appear in the filings: 22 purchases (10 insiders, €2.0M) and 1 sale (1 insider, €3.1M). The net balance comes to €1.1M on the selling side. Open-market purchases are the filings investors watch most closely, because the insider pays for the shares out of pocket. Biggest ticket of the year: €3.1M, sold by Coleman Brian F and made public on 9 December 2025. Those buying include 7 senior executives, 1 major shareholder and 1 finance chief.
In the case of 8 purchases, another manager of the company was buying within the same 30 days. Purchases made close together by different insiders form what is called a cluster. The most recent open-market purchase was published on 28 September 2026, 20 days ago. The median gap between a trade and its publication by SEC (Form 4) is 2 days. For comparison, the SEC allows two business days to file a Form 4.
With 27 filings in twelve months, the company is more active than the median of 19 filings across the 5,810 companies we follow on the same exchange. Looking back to 2016, when coverage begins, insiders filed 25 purchases and 18 sales. For the fiscal year to 31 December 2025, the annual 10-K puts revenue at 246.6 m USD and net income at 16.7 m USD.
Other companies in the same sector with recent insider buying flagged by our signals: RGC Resources Inc and Empire Petroleum Corp. Every figure here comes from the filings published by SEC (Form 4) and describes the past, not future prices; it is not investment advice.
Insider Decl.
100
Thresholds
n/a
Buy Volume
€2M
25 ops. · all time
Sell Volume
€6M
18 ops. · all time
Who traded when
BuySaleHartree Partners, LP13 buys
Brian F. Coleman2 sales
Vincent P. Abbatecola2 buys
Alan Sheriff1 buy
Brian J. Bertaux1 buy
Eric A. Prouty1 buy
+5 other insiders
Since the insiders bought
- -6.2%Entry US$5.35 · Close 15 Oct 2026 US$5.02
- -0.8%Entry US$5.06 · Close 15 Oct 2026 US$5.02
- +1.4%Entry US$4.95 · Close 15 Oct 2026 US$5.02
Entry is the close on the day after publication, the first price a reader could act on. Prices in the listing currency. Past moves are not a forecast.
This score ranks the purchase within its own market. A position size is suggested only on the venues of the backtested strategy universe; elsewhere, signals stay on watch. Not investment advice.
Fundamental score
Ranked 10,014 of 24,148 companies
55.9
score / 100
Value57
Quality55
FCF yld-3.9%
Earn yld7.9%
EV/EBITDA8.9x
ROE3.6%
Gross mgn25%
Net mgn6.8%
Debt/EBITDA0.2x
Pillars2/3
Transparent value + quality ranking, distinct from the insider signal.
Financial data
as of FY 2025FY ended December 2025 · cache
US$5.04
Analyst consensus
4 analysts2.00/5
US$7.00Target US$7.31(+45%)US$8.00
Income statement
RevenueUS$246.6M
Gross profitUS$62.1M25% margin
EBITDAUS$24.6M10% margin
Net incomeUS$16.7M3.5% margin
Valuation
PER (trailing)25.2x
PER (forward)17.7x
P/Book0.9x
Beta0.83
Balance sheet & cash
Market capUS$212.1M
Total debtUS$5.3M
Free Cash Flow-US$8.2M
Debt / Equity2%
Profitability & ownership
ROE3.6%
ROA3.1%
% insiders13.7%
% institutions80.0%
Last declaration on 28 September 2026
Declarations100 total
118,549 shares@ US$5.09870.28% mcap29.4% of flowCommon Stock, par value $0.01SEC:0000921895-26-002658:0
Canonical exit: 23 Dec 2026 (T+90)
11,013 shares@ US$5.100.026% mcap3.8% of flowCommon Stock, par value $0.01SEC:0000921895-26-002633:1
Canonical exit: 22 Dec 2026 (T+90)
2,502 shares@ US$5.09880.0058% mcap0.9% of flowCommon Stock, par value $0.01SEC:0000921895-26-002633:0
Canonical exit: 20 Dec 2026 (T+90)
11,136 shares@ US$5.100.026% mcap3.9% of flowCommon Stock, par value $0.01SEC:0000921895-26-002585:0
Canonical exit: 15 Dec 2026 (T+90)
5,317 shares@ US$5.100.012% mcap1.8% of flowCommon Stock, par value $0.01SEC:0000921895-26-002492:0
Canonical exit: 1 Dec 2026 (T+90)
91,166 shares@ US$5.49650.23% mcap33.6% of flowCommon Stock, par value $0.01SEC:0000921895-26-002318:1
Canonical exit: 23 Nov 2026 (T+90)
9,446 shares@ US$5.500.023% mcap3.5% of flowCommon Stock, par value $0.01SEC:0000921895-26-002318:0
Canonical exit: 22 Nov 2026 (T+90)
5,198 shares@ US$5.500.013% mcap1.9% of flowCommon Stock, par value $0.01SEC:0000921895-26-002194:0
Canonical exit: 10 Nov 2026 (T+90)
52,104 shares@ US$5.990.14% mcap21.5% of flowCommon Stock, par value $0.01SEC:0000921895-26-001914:0
Canonical exit: 27 Oct 2026 (T+90)
17,842 shares@ US$5.98920.049% mcap7.3% of flowCommon Stock, par value $0.01SEC:0000921895-26-001855:0
Canonical exit: 18 Oct 2026 (T+90)
47,708 shares@ US$5.98940.13% mcap19.6% of flowCommon Stock, par value $0.01SEC:0000921895-26-001855:1
Canonical exit: 19 Oct 2026 (T+90)
4,634 shares@ US$5.990.013% mcap1.9% of flowCommon Stock, par value $0.01SEC:0000921895-26-001775:0
Canonical exit: 4 Oct 2026 (T+90)
600 shares@ US$5.990.0016% mcap0.2% of flowCommon Stock, par value $0.01SEC:0000921895-26-001775:1
Canonical exit: 5 Oct 2026 (T+90)
3,219 sharesCommon StockSEC:0000925528-26-000059:0
2,000 shares@ US$4.870.0029% mcap100.0% of flowCommon StockSEC:0000925528-26-000049:0
Canonical exit: 17 Aug 2026 (T+90)
3,600 shares@ US$4.960.0054% mcap6.8% of flowCommon StockSEC:0000925528-26-000045:0
Canonical exit: 12 Aug 2026 (T+90)
5,000 shares@ US$4.840.0072% mcap2.0% of flowCommon StockSEC:0000925528-26-000038:0
Canonical exit: 11 Aug 2026 (T+90)
5,000 shares@ US$4.8950.0073% mcap5.5% of flowCommon StockSEC:0000925528-26-000034:0
Canonical exit: 11 Aug 2026 (T+90)
5,100 shares@ US$4.920.0075% mcap100.0% of flowCommon StockSEC:0000925528-26-000035:0
Canonical exit: 12 Aug 2026 (T+90)
3,600 shares@ US$4.960.0054% mcap100.0% of flowCommon StockSEC:0000925528-26-000047:0
Canonical exit: 12 Aug 2026 (T+90)
5,200 shares@ US$4.8750.0076% mcap100.0% of flowCommon StockSEC:0000925528-26-000037:0
Canonical exit: 11 Aug 2026 (T+90)
550 shares@ US$4.8450.0008% mcap100.0% of flowCommon StockSEC:0000925528-26-000040:0
Canonical exit: 12 Aug 2026 (T+90)
4,065 shares0Common StockSEC:0000925528-26-000016:0
4,065 shares0Common StockSEC:0000925528-26-000018:0
120,000 shares@ US$0.7528.7% of flowCommon StockSEC:0000925528-26-000002:0
25 of 100 declarations
About Hudson Technologies INC /ny
Hudson Technologies Inc. /NY (NASDAQ: HDSN) is a U.S.-listed company based in the United States, with its headquarters in Woodcliff Lake, New Jersey. The company operates in the HVACR ecosystem—heating, ventilation, air conditioning and refrigeration—and has built a differentiated niche around sustainable refrigerant products and services. Over time, Hudson has become one of the leading refrigerant reclaimers in the United States, combining product sales with environmental services that recover, clean, and reintroduce refrigerants into circulation according to industry standards. Its business model is closely tied to the circular economy and to the industry’s shift toward lower-global-warming-potential refrigerants.
Hudson’s core activities include refrigerant and industrial gas sales, refrigerant reclamation, refrigerant management, and on-site technical services through its RefrigerantSide® offering. The company also markets SmartEnergy OPS®, a web-based real-time monitoring service designed to identify inefficiencies in refrigeration and energy systems and help customers reduce energy use and operating costs. This mix of product and service revenue gives Hudson a hybrid profile: part specialty distributor, part environmental services provider, and part technical solutions company.
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From a competitive standpoint, Hudson occupies a niche position rather than competing as a broad-line industrial distributor. Its strengths lie in its reclamation infrastructure, advanced separation capabilities, installed customer relationships, and ability to support customers facing regulatory pressure to transition away from legacy refrigerants. That creates an important barrier to entry, as reclamation capacity, technical know-how, and industry certifications are not easily replicated. The company serves commercial, industrial, and government customers, as well as wholesalers, contractors, distributors, and equipment manufacturers.
Recent developments have been constructive. In March 2026, Hudson reported improved fourth-quarter and full-year 2025 results, including higher revenue in the quarter, stronger refrigerant sales volumes, and a second consecutive year of growth in reclamation volumes. Management also highlighted the successful integration of Refrigerants Inc., an acquisition completed in December 2025 that broadens Hudson’s customer network and geographic footprint across the United States. In addition, the company announced a $20 million share repurchase authorization for 2026, signaling confidence in cash generation and capital discipline. Another important point for investors is Hudson’s exposure to the U.S. Defense Logistics Agency, which has been a meaningful customer and concentration risk. Overall, HDSN offers a focused industrial-environmental investment case centered on refrigerant lifecycle management, energy efficiency, and the secular transition toward more sustainable cooling technologies.
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