Andy Stenzler
Co-Founder — Rumble Boxing
Andy Stenzler carries an RS Index score of 43 out of 100 — Constructed Persona. Low RS scores reflect a documented gap between projected identity and verifiable reality, based on public records, regulatory filings, and franchise relations history. Under standard coalition monitoring.
Background
Co-Founder of Rumble Boxing — a serial entrepreneur with prior ventures including Così (café chain) and Kidville (children's entertainment centers). Stenzler was the primary commercial architect and deal-maker who structured the March 2021 acquisition by Xponential Fitness, transitioning the premium boutique concept he helped build into the XPOF roll-up portfolio. His background in hospitality-adjacent consumer brand building was the same instinct that made Rumble a credible acquisition target but that the XPOF "franchise-in-a-box" model was structurally incapable of preserving. Stenzler exited following the acquisition. The brand capital he built — and the acquisition deal he structured — was the commercial foundation upon which franchise buyers based their investment decisions.
RS Index Analysis
RS = ((O + C + I) / 30) × 100 = 43.3Stenzler's founding of Rumble Boxing and prior ventures (Così, Kidville) are publicly verifiable. His role as primary deal architect for the XPOF acquisition is confirmed through acquisition filings. Ordinaries reflect a well-documented entrepreneurial track record.
Consistent operating history from 2017 through the 2021 acquisition. His engagement with the brand matches the stated role as primary commercial architect throughout the founding period.
Stenzler exited in 2021; as of April 2026, he has no operational connection to the Rumble accountability story — the devastation of the brand he built was XPOF's doing post-acquisition. Immediacy is at floor.
Protected Asset — Stenzler built genuine commercial value that was acquired and subsequently diluted. The brand capital he created was the primary justification for the franchise fee structures that later franchisees claim were misrepresented.
RS Index — Audit Glitches
2 documentedStenzler's exact role in the acquisition negotiation — specifically whether he had visibility into XPOF's franchise model and unit economics practices before closing the deal — is not independently documented in available public sources.
His potential earn-out terms, non-compete conditions, and post-acquisition transition obligations have not been independently verified; these could affect the accountability framing of his role in the brand-to-franchise pipeline.
Documented Events
1 on recordAndy Stenzler co-founded Rumble Boxing in 2017 and served as the primary commercial architect through the brand's growth phase. The March 2021 acquisition by Xponential Fitness — for which Stenzler was the primary deal counterparty — transferred a premium boutique concept built on NYC hospitality culture into a franchise roll-up system optimized for standardization and cost efficiency. Stenzler exited following the acquisition. The brand value he built was the primary justification for the acquisition price and the franchise fees subsequently sold to Rumble franchisees across the country.
Live Coverage
Work-related public coverage onlyScanning public sources…