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No insider purchase over the last 90 days. The latest, by Philippe Haffner, was filed 31 Mar 2022.
Haffner Energy: what insiders have been doing
Haffner Energy is a Energy company. Its directors and officers file their transactions with AMF. The past year has been quiet: not a single insider filing for Haffner Energy. The previous disclosure was published on 2 September 2025.
Our records for Haffner Energy go back to 2022, with 2 purchases and 34 sales on the open market in total.
Other companies in the same sector with recent insider buying flagged by our signals: RGC Resources Inc and Terawulf Inc. This summary is built from AMF disclosures alone and does not predict where the share price will go.
Insider Decl.
36
Thresholds
n/a
Buy Volume
€1M
2 ops. · all time
Sell Volume
€644,614
34 ops. · all time
Who traded when
BuySaleHaffner Participation SAS SAS21 sales
Kouros16 sales
Kouros SA1 sale
Since the insiders bought
- -78.0%Entry €8.74 · Close at T+365 €1.92
- -78.0%Entry €8.74 · Close at T+365 €1.92
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.
Fundamental score
Ranked 25,038 of 26,250 companies
15.0
score / 100
Value28
Quality2
FCF yld-0.0%
Earn yld-9.3%
EV/EBITDA·
ROE-73%
Gross mgn-35%
Net mgn·
Debt/EBITDA·
Pillars2/3
Transparent value + quality ranking, distinct from the insider signal.
Financial data
as of FY 2026FY ended March 2026 · cache
€0.77
Analyst consensus
1 analysts5.00/5
€0.14Target €0.14(-82%)€0.14
Income statement
Revenue€1.3M
Gross profit-€464k-35% margin
EBITDA-€11.1M-826% margin
Net income-€12.7M-947.5% margin
Valuation
PER (forward)-6.7x
P/Book6.7x
Beta1.28
Balance sheet & cash
Market cap€143.7M
Total debt€2.4M
Free Cash Flow-€8,170
Debt / Equity15%
Profitability & ownership
ROE-72.6%
ROA-20.8%
% insiders18.9%
% institutions0.1%
Last declaration on 2 September 2025
Declarations36 total
19,730 shares@ €0.27031.6% of flowActionEuronext Growth ParisISIN FR0014007ND62025DD1055892
10,000 shares@ €0.270.8% of flowActionEuronext Growth ParisISIN FR0014007ND62025DD1055894
19,581 shares@ €0.27161.6% of flowActionEuronext Growth ParisISIN FR0014007ND62025DD1055872
74,628 shares@ €0.26375.9% of flowActionEuronext Growth ParisISIN FR0014007ND62025DD1055271
191,114 shares@ €0.270215.6% of flowActionEuronext Growth ParisISIN FR0014007ND62025DD1054885
47,718 shares@ €0.27333.9% of flowActionEuronext Growth ParisISIN FR0014007ND62025DD1054887
25,403 shares@ €0.26962.1% of flowActionEuronext Growth ParisISIN FR0014007ND62025DD1054563
17,468 shares@ €0.27071.4% of flowActionEuronext Growth ParisISIN FR0014007ND62025DD1054537
18,313 shares@ €0.27071.5% of flowActionEuronext Growth ParisISIN FR0014007ND62025DD1054542
9,466 shares@ €0.27430.8% of flowActionEuronext Growth ParisISIN FR0014007ND62025DD1053597
25,475 shares@ €0.27772.1% of flowActionEuronext Growth ParisISIN FR0014007ND62025DD1053016
40,126 shares@ €0.27073.3% of flowActionEuronext Growth ParisISIN FR0014007ND62025DD1052912
14,547 shares@ €0.27581.2% of flowActionEuronext Growth ParisISIN FR0014007ND62025DD1052908
40,878 shares@ €0.27753.4% of flowActionEuronext Growth ParisISIN FR0014007ND62025DD1052911
45,553 shares@ €0.27973.9% of flowActionEuronext Growth ParisISIN FR0014007ND62025DD1052775
79,275 shares@ €0.276.5% of flowActionEuronext Growth ParisISIN FR0014007ND62025DD1039460
343,070 shares@ €0.287429.8% of flowActionEuronext Growth ParisISIN FR0014007ND62025DD1039464
177,655 shares@ €0.2714.5% of flowActionEuronext Growth ParisISIN FR0014007ND62025DD1039222
53,220 shares@ €0.31225.3% of flowActionEuronext Growth ParisISIN FR0014007ND62025DD1035351
106,020 shares@ €0.331511.2% of flowActionEuronext Growth ParisISIN FR0014007ND62025DD1035347
47,087 shares@ €0.35195.3% of flowActionEuronext Growth ParisISIN FR0014007ND62025DD1037663
195,723 shares@ €0.288818.0% of flowActionEuronext Growth ParisISIN FR0014007ND62025DD1037415
10,922 shares@ €0.28681.0% of flowActionEuronext Growth ParisISIN FR0014007ND62025DD1036482
79,703 shares@ €0.26076.6% of flowActionEuronext Growth ParisISIN FR0014007ND62025DD1037175
31,548 shares@ €0.2522.5% of flowActionEuronext Growth ParisISIN FR0014007ND62025DD1036864
25 of 36 declarations
About Haffner Energy
Haffner Energy is a French clean-energy technology company focused on converting residual biomass into low-carbon fuels and energy molecules. Headquartered in Vitry-le-François in the Grand Est region, and also operating in Paris, Nantes and Houston, the company designs, manufactures, supplies and operates solutions for renewable gas, renewable hydrogen, renewable methanol and Sustainable Aviation Fuel (SAF). Its business model sits at the intersection of industrial decarbonization, circular economy principles and the transition away from fossil-based energy systems.
The company traces its origins back more than three decades. It was co-founded by Marc and Philippe Haffner and states that it has 32 to 33 years of experience in biomass-to-energy, together with roughly 15 years of R&D work on its proprietary thermolysis and biomass gasification technologies. This long development cycle has helped Haffner Energy build an intellectual property portfolio of around 80 international patents and create an industrial platform aimed at producing renewable syngas, hydrogen and synthetic fuels. The company also highlights the co-production of biogenic CO2 and biochar, which strengthens the environmental case for its process.
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Haffner Energy’s business lines are relatively diversified for a mid-cap clean-tech player. It does not only sell equipment, but also develops modular solutions, supports project engineering, performs feedstock testing and can participate in the operation of plants. Its customer base includes industrial groups, project developers, utilities, municipalities and mobility stakeholders looking for competitive alternatives to fossil fuels. In January 2026, the company launched its C-iC modular unit line, based on its H6 technology, to address the financing and deployment challenges of medium-sized decentralized biofuel projects. According to the company, these units can produce up to 1,700 kW of renewable syngas or up to 50 kg per hour of renewable hydrogen, helping make such projects more bankable without subsidies.
A key recent milestone was the commissioning in February 2025 of what the company described as the world’s first solid-biomass hydrogen production plant at its Marolles site in France. Haffner Energy presents this facility as a testing, training and production center used to validate different types of biomass, including non-conventional feedstocks. Its geographic footprint remains mainly European, but its Houston presence gives it a foothold in the US market and supports international business development. Overall, Haffner Energy is positioned as an innovative industrial decarbonization platform with a differentiated technological base, a strong patent position and an expanding pipeline of renewable fuel applications.
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