K Fund

K Fund is a Madrid-based early-stage firm focused on the Iberian market, with an explicit mandate to bridge the Pre-Seed to Series A gap for technical founders building AI and B2B SaaS companies. The firm’s positioning is deliberately narrow: early stage, Iberian, technical, and B2B, which makes it useful as a focused partner for the right founders and irrelevant for everyone else.

The healthcare thesis covers AI/ML in healthcare and digital health, with a bias toward technically grounded B2B software founders rather than consumer-facing or clinically regulated programs. The firm tends to favor companies whose product is genuinely software-shaped and whose go-to-market depends on classic enterprise sales motions, with healthcare as the target sector rather than the defining identity. Specific portfolio companies are not enumerated in the source material, and founders should ask for healthcare-specific references in diligence.

K Fund invests at Pre-Seed, Seed, Series A, and Series B, with checks of one to five million dollars. That stage range gives the firm useful continuity within the early stages, particularly for Iberian companies whose financing path runs primarily through K Fund and a small number of pan-European co-investors. The geographic focus is Spain and Portugal, and the firm operates as a credible early lead in Iberian rounds with established syndicate relationships across Europe for follow-on financing.

The team is built around partners with backgrounds in operating, investing, and the Iberian technology ecosystem. Specific partner names are not provided in the source material, and founders should clarify partner ownership of healthcare and AI directly.

The right founders for K Fund are technical B2B SaaS and AI teams anchored in Spain or Portugal, where the firm’s local depth and stage discipline create genuine fit. The wrong founders are consumer-focused, services-heavy, or clinically regulated teams, where the firm’s thesis does not produce useful pressure. Founders should arrive with a clear product wedge, a credible enterprise sales plan, and an honest view of how Iberian roots translate into broader European or global scale. K Fund rewards technical specificity and commercial discipline, and tends to be skeptical of decks that lean on geographic positioning rather than on product and execution. The firm is at its best when the company is genuinely technical and the founder genuinely commercial.