# Sublime Systems names COO Rob Davies CEO; co-founder Leah Ellis steps back from the CEO role

Canonical page: https://technooptimist.io/stories/sublime-systems-names-coo-rob-davies-ceo-co-founder-leah-ellis-steps-b498373b
Date: 28 Oct 2025
About: [Sublime Systems](https://technooptimist.io/companies/sublime-systems.md)
Original source: https://sublime-systems.com/sublime-systems-appoints-new-chief-executive-officer-an-executive-chair-and-a-board-member-as-it-continues-to-establish-its-commercial-and-industrial-footprint/

Sublime Systems promoted chief operating officer Rob Davies to CEO, made board member Bill Brady executive chair and added Verdox chairman Brian Baynes to the board. Co-founder Leah Ellis, CEO since the 2020 MIT spin-out, stays involved; the company runs a 250-tonne-a-year pilot line in Somerville.

---

The Techno Optimist tracks every frontier of technology, program by program: https://technooptimist.io/ (a Markdown version of any page: add .md to its URL; site map for agents: https://technooptimist.io/llms.txt).
Data API (JSON, realtime stream): https://technooptimist.io/developers. People read 5 pages free, then Reader $10/month; these Markdown pages are open to agents.