Michael Portmann Appointed as New CFO of SAK
18.02.2026 | from St. Gallisch-Appenzellische Kraftwerke AG
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Image rights: SAK
18.02.2026, The Board of Directors of SAK (St. Gallisch-Appenzellische Kraftwerke AG) has appointed Michael Portmann as the new Chief Financial Officer (CFO) effective from 1 August 2026. He succeeds Cornel Loser, who has significantly shaped the SAK with great dedication over many years.
Michael Portmann has extensive professional expertise and long-standing experience in the energy sector. He holds an M.A. in Accounting & Finance from the University of St. Gallen (HSG) as well as an M.A. in International Management (CEMS). Professionally, he spent about 10 years in energy supply at the Axpo Group, including as CFO of the Volkswind Group in Germany, a leading company in the development and operation of onshore wind power plants in Germany, France, Finland, and Romania. In the past three years, he has gained valuable international industry experience as CFO of the Forster Group in St. Gallen.
In these roles, he particularly took responsibility as CFO at Volkswind for shaping and further developing key financial processes to implement growth strategies. At the same time, he successfully implemented strategic development processes and efficiency initiatives in a dynamic environment.
Regarding his new role, Michael Portmann said: "I look forward to contributing my experience in energy supply and industry as CFO to the management team and developing SAK further as a leading energy supply company in Eastern Switzerland, together with the employees."
Personally, the 39-year-old Michael Portmann is closely connected to Eastern Switzerland, actively involved and well-networked, especially in the energy sector, and a family man. He is married and a father of two children, living with his family in Au (SG), in the Rhine Valley.
Chairman of the Board, Marcel Gamweger, acknowledges the achievements of the outgoing CFO: "On behalf of the entire Board of Directors, I thank Cornel Loser for his long-standing, exceptionally valuable commitment. He has shaped the financial leadership of SAK over many years and established critical foundations for the future development of our company."
SAK warmly welcomes Michael Portmann and looks forward to the collaboration.
Media Contact
SAK (St. Gallisch-Appenzellische Kraftwerke AG)
Marcel Gamweger
Chairman of the Board
medien@sak.ch
St.Gallisch-Appenzellische Kraftwerke AG
Vadianstrasse 50
P.O. Box 2041
CH-9001 St.Gallen
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St. Gallisch-Appenzellische Kraftwerke AG
With investments in future markets, we support the energy transition in Eastern Switzerland. Our business fields include electricity generation, electricity and heat supply, a modern fiber-optic network, and powerful internet, telephone, TV, and mobile services, as well as the promotion of e-mobility and renewable energy solutions such as photovoltaic systems and heat pumps.
With around 400 employees, we cover the entire value chain: from energy procurement through planning, construction, operation, and maintenance of networks and systems to sales and billing. SAK – everything from a single source.
Note: The "About Us" text is taken from public sources or from the company profile on HELP.ch.
Source: St. Gallisch-Appenzellische Kraftwerke AG, Press release
Original article published on: Michael Portmann wird neuer CFO der SAK