# William E. Havemann

**Role:** Arguing counsel for Kalshi in Fourth Circuit Maryland preemption case
**Affiliation:** Unknown (possibly working with Neal Katyal as lead counsel)

## Timeline

- **2026-05-07** — Argued for Kalshi in Fourth Circuit oral argument (KalshiEX LLC v. Martin, No. 25-1892), allocated 14 minutes plus 6 minutes rebuttal