Tilia Impact Ventures reviews about 1,000 startups a year and rejects roughly 70% of self-described impact companies for not meeting its bar, ties 100% of its carried interest to portfolio impact performance, and applies six explicit impact guidelines with hard thresholds like avoiding or capturing over 100,000 tons of GHGs over five years, all while growing out of Czech social-enterprise roots as the first social impact fund in the Czech Republic and one of only a handful in a CEE region with just 10-15 impact funds compared to about 300 in Western Europe. Its portfolio includes Datlab, a public procurement oversight tool used on over 25,000 tenders that has helped save an estimated €142-143 million annually and supported prosecutions of corrupt officials, reflecting a team that blends media, NGO, startup, and finance backgrounds.