Pyxis Oncology appoints Thomas Civik as CEO and Chairman
- Thomas Civik appointed CEO and Chairman of Pyxis Oncology effective September 4, 2026
- John Flavin transitions to Lead Independent Director, remaining on the board
- Company expects fall 2026 data update for MICVO monotherapy in head and neck cancer
- Fourth quarter 2026 update expected for MICVO combination study with pembrolizumab

*this image is generated using AI for illustrative purposes only.
Pyxis Oncology Inc (NASDAQ: PYXS) has appointed Thomas Civik as Chief Executive Officer and Chairman of the Board, effective September 4, 2026. The leadership change coincides with the company’s push to advance clinical milestones for its lead candidate, MICVO.
Civik, who served as Interim Chief Executive Officer since February 2026 and joined the board in 2021, brings extensive experience from previous roles at ImCheck Therapeutics, Repare Therapeutics, Five Prime Therapeutics, Foundation Medicine, and Genentech.
Leadership Transition
John Flavin, co-founder and founding Chairman, will transition to the role of Lead Independent Director. Flavin will continue to serve on the board, providing oversight during this strategic phase. The board cited Civik’s demonstrated leadership and disciplined execution during his interim tenure as key factors in the appointment.
Civik expressed gratitude for Flavin’s vision and guidance since the company’s inception. He emphasized the team’s focus on generating clinical evidence for MICVO to address unmet needs in head and neck cancer treatment.
Clinical Pipeline Updates
Pyxis Oncology expects to report updated data from two key studies in 2026:
- Phase 1 monotherapy study of MICVO in second-line and beyond recurrent/metastatic head and neck squamous cell carcinoma (R/M HNSCC) in the fall of 2026. This update will include analysis of patients treated at or below dose cap, covering safety, tolerability, efficacy, and initial durability.
- Phase 1/2 combination study of MICVO with pembrolizumab in first-line R/M HNSCC in the fourth quarter of 2026.
MICVO holds Fast Track Designation from the U.S. Food and Drug Administration for treating adult patients with R/M HNSCC whose disease progressed following platinum-based chemotherapy and anti-PD-(L)1 therapy.
What the Numbers Show
The appointment of a permanent CEO after seven months of interim leadership signals a stabilization of executive management ahead of critical clinical readouts. Civik’s background in commercializing oncology therapies, including roles at companies acquired by major pharmaceutical firms like Amgen and Ipsen, aligns with Pyxis Oncology’s need to navigate complex regulatory and clinical pathways for its antibody-drug conjugate candidate.
How might Thomas Civik's commercialization experience at ImCheck and Repare influence Pyxis Oncology's strategy for partnering or licensing MICVO if clinical data proves promising?
What specific risks to the stock price could arise if the fall 2026 Phase 1 monotherapy data for MICVO fails to meet safety or efficacy expectations?
How does the timeline of the Q4 2026 combination study with pembrolizumab align with potential FDA regulatory milestones or patent expiration windows for existing head and neck cancer treatments?






























