Mainvest
Mainvest ceased operations on June 14, 2024, 53 days after its banking partner Synapse filed for Chapter 11. Synapse was the trigger. The vulnerability was already on file: the operator's own Regulation Crowdfunding filing in November 2022 disclosed 2.5 months of runway and a going-concern paragraph, and none of the 779 offerings it hosted carried any arrangement for servicing revenue-sharing notes if the portal stopped. AltStreet reconstructed the full SEC record and the site's own marketing claims to answer the question that outlives the platform: what investors can learn from the first major failure of a revenue-sharing crowdfunding portal, and what its 30,000 note holders still own.
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Platform Identity
- Website
- mainvest.com
- Headquarters
- Salem, MA, US
- Founded
- 2018
- Parent
- Mainvest Holdings Corp
- Platform type
- Regulation Crowdfunding Revenue-Sharing Note Portal (ceased operations June 14, 2024)
- Regulatory
- finra_member
- Eligibility
- retail
AltStreet Coverage
- Review status
- Published
- Coverage type
- Investment platform
- Review date
- Sep 7, 2026
- Last updated
- Oct 15, 2026
- Composite score
- 1.4
- Structural signals
- 5 warning26 total
Key Data Points
- EDGAR-linked offerings
- 2
- Filing-verified raised
- $5.92M
Auditors of Record
Audit firms named in this platform's issuer filings, as recorded in AltStreet's auditor directory. Each firm page lists every issuer it audits across covered platforms.
Reference Reading
AltStreet reference pages on the filings and mechanics behind this platform's category.
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