Martin Altorfer, co-founder of Session.vc, invests primarily in early-stage (pre-seed and seed) technology-enabled companies. See contact routes.
Martin Altorfer, co-founder of Session.vc, invests primarily in early-stage (pre-seed and seed) technology-enabled companies, with a distinctive focus on B2B software, SaaS, AI, and the consumer space, particularly within Switzerland and the DACH region. His typical check size averages around €4 million, though some tracked seed investments range from $0.15 million to $0.3 million, reflecting flexibility across deal stages. Notable portfolio companies include Jua, Saporo, Pabio, and GUURU, with Altorfer backing ventures at Seed and Series A stages in sectors like Security, SMB Software, and SaaS. Session.vc’s distinctive thesis centers on an "owner-operator mindset," where the firm actively partners with founders using deep operational experience rather than pursuing passive, broad portfolios.
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