CRPS does not publish a stable person identifier. This page is scoped to roles for one company; same-name records at other companies are kept separate.
Sergey Ryzhov owns 100% of Sonda, which earned 21,746€ in 2025.
Owners
The registry lists no other active owners of this company.
Source: CRPS persons in company and company shares, fetched 15 Jun 2026. Direct registry relationships only. CRPS registry ↗