This paper investigates the effect of mandatory disclosure requirements for private firms on their decision to go public. Using detailed project‐level data for biopharmaceutical firms, we explore the effects of a legal reform that exogenously required firms to publicly disclose information regarding clinical trials. Exploiting cross‐sectional heterogeneity in firms' exposure to the regulation based on their internal development portfolios, we find that affected firms are significantly more likely to transition to public equity markets following the reform. Moreover, firms that go public because of the increased disclosure requirements subsequently reduce the size of their project portfolios while shifting to safer investments acquired externally. We provide additional evidence for the main hypothesis using a second setting: a 2006 German reform which enhanced the enforcement of mandatory disclosure requirements for private firms. The results suggest that private firms' general information environment and disclosure requirements influence the propensity of going public.

This study investigates whether a private firm’s decision to go public affects the IPO decisions of its competitors. Using detailed data from the drug development industry, we identify a private firm’s direct competitors at a precise level through a novel approach using similarity in drug development projects based on disease targets. The analysis shows that a private firm is significantly more likely to go public after observing the recent IPO of a direct competitor, and this effect is distinct from “hot” market effects or other common shocks. Furthermore, our effects are centered on firms that operate in more competitive areas. We additionally explore peer effects in private firm funding propensities more broadly, such as through venture capital or being acquired, and find results consistent with a competitive channel.