Jack Mastrangelo
FounderCofounder of Cobblestone, ex-Ramp & Facebook software engineer.
Founder profile As recorded 2026-09-15
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Real estate
Cobblestone
Overview
We're building software to help institutional landlords reduce delinquency starting with fraud reduction.
Company description As recorded 2026-11-08
Founders & team
Previously AppDoma
Company history As recorded 2026-11-08
Jason Scharff
FounderCo-Founder of Cobblestone. Previously Engineering at Ramp and Robinhood.
Founder profile As recorded 2026-09-15
3team members reported
Source-reported As recorded 2026-09-15
Founded 2023 · Source
News & product activity
Cohort membership
Winter 2023Winter 2023
Original evidence ↗Sources & observations
Profile depthverified profile
Website observationwebsite reachable
Last website check2026-11-11
Location · source statedNew York City, NY, USA
Pricing evidenceNo pricing page confirmed
Maturity: Not assessed · 3 of 6 areas documented
Source-based assessment · automated evidence rules
The source reports an inactive or acquired company; current product identity needs review.
Maturity is an evidence-based assessment, not a success rating. It may understate the current stage where evidence is limited. Coverage records documented areas, not a complete or independently audited company history.
- Product overviewSource description Checked 2026-11-08
- Product visualsNot documented
- Founders & originsTeam information
- Business model & pricingNot documented
- Funding & ownershipNot documented
- Dated milestonesDated source activity: 2023 Q1 (quarter only)
independent websitesource corroborationreachable websitedescriptive evidenceclassified market and modelsourced peoplesourced founding year
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