Theodorus is a Belgian venture capital fund supporting and investing in innovative start-ups and spin-offs, primarily from universities and research institutions with a focus on technology-sector companies. The firm is affiliated with the Universite libre de Bruxelles (ULB), one of Belgium's leading universities, and operates as the university's spin-out / technology-transfer venture capital vehicle aEUR" investing in start-ups emerging from ULB research laboratories, and selectively from other Belgian and European universities and research institutions. Theodorus has raised multiple institutional funds (Theodorus I, II, III, IV) with aggregate AUM in the EUR tens of millions to low-hundreds-of-millions range, typically writing initial check sizes in the EUR 100,000 to EUR 1 million range at seed and early Series A stages. The firm operates alongside other Belgian university-affiliated tech-transfer and early-stage VCs. Notable portfolio companies have included medical-devices, biotech, deep-tech, and digital-technology spin-outs from ULB and other Belgian research institutions.