Hornblower Josiah

About Hornblower Josiah

Josiah Hornblower is a founding figure at Shattuck Labs, a publicly traded biotechnology company listed on NASDAQ and focused on developing novel therapies in oncology and autoimmune disease. Public company materials indicate that he served as Chairman and later Executive Chairman, and that he played a central role in the company’s formation and early governance. Available sources also identify him as a co-founder alongside Taylor Schreiber, underscoring his involvement in shaping the company’s early strategic direction and corporate structure. ([crunchbase.com](https://www.crunchbase.com/organization/shattuck-labs?utm_source=openai)) During Shattuck Labs’ early development, Hornblower was associated with major corporate and strategic milestones, including the collaboration announcement with Takeda to explore ARC fusion proteins in immuno-oncology. At the time of that announcement, company communications quoted him as Chairman and CEO of Shattuck Labs, suggesting that he held significant executive responsibility during the company’s formative years. That period appears to have centered on building external partnerships, advancing preclinical programs, and supporting the company’s platform strategy. ([shattucklabs.com](https://www.shattucklabs.com/takeda-and-shattuck-labs-announce-collaboration-to-explore-arc-fusion-proteins-in-immuno-oncology/?utm_source=openai)) Shattuck’s governance disclosures show that Hornblower later stepped down from the board in 2021 as part of a board transition. The company stated that he was leaving the Board of Directors after having helped establish the foundation of the business. From a governance perspective, his profile is therefore best described as that of a founder and early-stage corporate leader rather than a long-tenured operating executive. ([ir.shattucklabs.com](https://ir.shattucklabs.com/files/doc_news/2021/10/1/shattuck-labs-announces-changes-its-board-directors.pdf?utm_source=openai)) His background, based on the public record reviewed, is most clearly tied to company formation, biotech governance, and strategic partnership development in a clinical-stage life sciences environment. Where detailed biographical information is not publicly verified in the sources consulted, it is best to remain general and avoid asserting prior roles or companies that cannot be substantiated. ([crunchbase.com](https://www.crunchbase.com/organization/shattuck-labs?utm_source=openai))