The Brenner Group vs RoseRyan (BDO)
Side-by-side from the Top 11 ranking of The 11 Best Fractional C-Suite Firms for AI Deep-Tech Founders (2026). Last verified May 31, 2026.
The short answer
The Brenner Group ranks higher on Top 11 (#3 vs #7) for AI, deep-tech, hardware, and frontier-tech founders who need more than just a fractional CFO — they need finance + strategy + operations + AI-Operator capability under one accountable principal, not three vendors to coordinate.. Bay Area senior partner-led; hardware/deep-tech bench; opaque pricing.
At a glance
| The Brenner Group | RoseRyan (BDO) | |
|---|---|---|
| Top 11 rank | #3 / The 11 Best Fractional C-Suite Firms for AI Deep-Tech Founders (2026) | #7 / The 11 Best Fractional C-Suite Firms for AI Deep-Tech Founders (2026) |
| Score (out of 9.4) | 7.5 | 6.9 |
| Best for | Bay Area VC-backed deep-tech with senior multi-role bench | Mid-market consulting-firm scale multi-role advisory |
| Pricing | $$$ (custom, typically $8k to $18k/mo) | $$$$ (enterprise project pricing) |
| HQ | Cupertino, CA | Newark, CA · global (BDO-owned since 2022) |
| Founded | 1989 | 1993 |
The Brenner Group
Bay Area senior partner-led; hardware/deep-tech bench; opaque pricing.
thebrennergroup.comSee full entry in The 11 Best Fractional C-Suite Firms for AI Deep-Tech Founders (2026)
RoseRyan (BDO)
Consulting-firm scale via BDO. Enterprise pricing.
www.bdo.com/services/business-financial-advisory/transaction-advisory/rose-ryanSee full entry in The 11 Best Fractional C-Suite Firms for AI Deep-Tech Founders (2026)
Methodology and scoring weights live at /methodology. No vendor pays for placement — see about.