Numinam (2024): 11-field B2B SaaS form 0.96% → 8.1% via multi-step (+743% lift)
Claim: Numinam case study (Leadgen Economy A/B test, 2024): an 11-field B2B SaaS quote form converted at 0.96% as a single-page form vs 8.1% when split into 3 steps — a +743% lift.
Confidence: Verified (single-domain A/B test).
Why this matters: Provides a 2024-era replication of the multi-step effect at scale-correct lift magnitudes for a B2B context. The form was 11 fields — comfortably above the Zuko: multi-step forms only outperform single-page above ~7 fields; below that, neutral or worse threshold. Pairs with Formstack 2014: multi-step forms 13.9% vs 4.5% single-step (n=450k+ accounts) — directional, not RCT for directional industry data and Venture Harbour: multi-step forms up to 300% better than single-page — correctly attributed (NOT CXL/ConversionXL) for portfolio-level evidence.