Sergii Grybniak
Founder of Opporty, whose OPP-token ICO the SEC charged as fraudulent — falsely claiming it was 'SEC compliant/registered' and exaggerating the platform's users. A 2025 final judgment ordered a $100K penalty and barred him from securities offerings.
Also known as: Sergey Grybniak
Bio
Sergii "Sergey" Grybniak founded Opporty International and led its OPP-token ICO. The SEC said he falsely claimed the ICO was "SEC registered" and "100% SEC compliant," exaggerated user numbers, misrepresented a partnership with a major software company, and used misappropriated third-party content to fake activity. [1][2]
Outcome
Charged in January 2020, Grybniak consented (without admitting/denying) to a February 2025 final judgment: permanent injunctions, a $100,000 civil penalty, a conduct-based injunction barring securities offerings, and undertakings to disable OPP tokens. [1][2]
Bracketed numbers refer to the numbered sources listed below.
Linked scams & cases
Sources (2)
See also
- Bitcoin Latinum (LTNM)TokensA ~$16M token offering (SAFTs for 'Bitcoin Latinum' / LTNM) that the SEC charged in 2026 as fraud: founder Donald Basile falsely called LTNM 'the world's first insured digital asset' backed by an 'existing trust,' neither of which existed, and diverted investor funds for personal use (including a $160,000 horse).
- Loci (LOCIcoin)TokensA 2017–2018 ICO for 'LOCIcoin' tied to the InnVenn IP-search platform. The SEC charged Loci and CEO John Wise with fraud for raising $7.6M on false claims about revenue, headcount, and user base; Wise also misused investor funds. Settled with a $7.6M penalty and an officer/director bar.
- Blockchain Terminal (BCT)Tokens
This page was last updated on Jun 8, 2026. View revision history.