The AB Max Sievert team is in place and consists of four full time employees, a board as well as a group of involved co-owners who participate in active ownership of the portfolio companies.


Christian Sievert

Managing Director & Founder

17 years in private equity at Segulah, including 10 as CEO/Managing Partner, prior to which Christian spent three years as a consultant with Bain & Co in Sweden and the US. MSc from the Stockholm School of Economics. Director of AB Max Sievert.

Carl-Magnus Ruthberg

CFO & Investment Director.

Carl-Magnus has a broad operational and financial background with 19 years experience of which 12 years as CFO and 7 years as Investment Manager. Most recently CFO with responsibility for M&A at AxLoad within Axel Johnson International (35 companies in 15 countries). Prior to that CFO for listed Carl Lamm Holding, (acquired by Ricoh), CFO for private equity owned Cygate Group (acquired by TeliaSonera), and Investment Manager at Ratos and Bure Equity. MSc from the Gothenburg School of Business and Commercial Law.

Bo Ax:son Johnson

Investment Director

Four years of work experience from Shanghai, China, most recently with developing and investing in local ventures. Prior to that consultant to Elekta in Shanghai and partner at a corporate finance boutique with predominantly Asian clients. In addition, Bo has three years' experience from the investment bank Lazard in Stockholm. M.Sc. in Industrial Engineering and Management from the Institute of Technology at Linköping University.

Christian Tegenmark

Investment Director

Eleven years at private equity partnership Segulah, the past few years as Partner. Prior to that, consultant at PwC Corporate Finance, Valuation & Strategy. MSc from the School of Business, Economics and Law at the University of Gothenburg.


Andreas Versteegh


Chairman and founder of the investment company Living Capital. Holds a number of executive positions in the Living Capital group and is a cofounder of brands such as Fever-Tree mixers, Martin Millers Gin and the Independent Film Company in London. Chairman of Haiseal Timber Inc, Georgia, and Okaloosa Development Company. MSc from the Stockholm School of Economics.

Christian Sievert


Helena Saxon

Senior Advisor

CFO Investor AB since 2015. Board member SEB and Sobi. Formerly CFO Halvarsson & Halvarson, CFO Syncron International, Investment Manager Investor AB and Financial Analyst Goldman Sachs. M.Sc. BA & Economics Stockholm School of Economics.