Serge Messerlian

Serge Messerlian is the Chairman and CEO of Creyon Bio, a San Diego biotech using AI to design oligonucleotide medicines. A life-science operator with more than 25 years across oncology, hematology, immunology and rare disease, he has led Teon Therapeutics as CEO, run Janssen Oncology as President at Johnson & Johnson, and held senior roles at Actelion, Baxalta and Baxter International. He joined Creyon first as an investor and board member through DCVC Bio, then stepped in as Executive Chairman and Acting CEO in fall 2024 and took the full CEO title in April 2025 as the company prepares to enter the clinic in 2026.