Family Office · Gempen, Switzerland
PrimeStone Partners AG is a Swiss-based investment firm specializing in value-oriented, long-term investments in publicly listed companies, primarily across Europe. Established in 2014 by former partners of The Carlyle Group, the firm is known for its activist investment approach, often engaging with management teams to drive operational improvements and strategic change. PrimeStone Partners manages significant assets and has built a reputation for constructive shareholder activism, targeting underperforming companies with the aim of unlocking shareholder value. The firm operates out of Zurich and is recognized for its disciplined investment process and active engagement strategy in the European market.
Geography
Switzerland, Austria, Liechtenstein, Singapore
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PrimeStone Partners AG deploys privately-held capital. Cycles are short, decisions concentrated, and structures flexible (equity, convertible, revenue-share). Less brand premium, more underwriting on substance. VCboom tracks PrimeStone Partners AG alongside 47,000+ other active investors, ranked weekly by recent-deal momentum, sector concentration, and partner activity.
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