Key facts
- Sou Sou’s last known valuation is $6.5M (Sep 2025).
- It has raised $2.7M; the latest was Accelerator/Incubator in Oct 2025.
- Notable investors include SocialX Acceleration, Alpha Club Musashino, CHCP, Japan Communications, Memoryd — 8 tracked in total.
- Status: Privately Held (backing).
- ·The complete investor list — 8 names
- ·Watchlist + deal alerts for Sou Sou
- ·The full record, as it builds
Funding rounds
No funding rounds for Sou Sou are on record yet — either the company hasn't raised institutional capital, or the raise hasn't surfaced in our sources.
About Sou Sou
Operator of an end-of-life platform designed to connect the feelings of those who leave behind and those who are left behind. The company's platform offers a range of services including ending notes, time capsule letters, and memorial pages, enabling families to navigate the end-of-life process with ease.
- Sector
- Consumer Products and Services (B2C)
- HQ
- Kawaguchi, Japan
- Founded
- 2022
- Website
- sousou-official.com/
- Ownership
- Privately Held (backing)
Sou Sou doesn't have a composite mark yet — a PA Mark is published once enough pricing inputs exist (trade prints, fund marks, round prices). The rest of the record below builds toward it.
Recorded secondary trades
No secondary trades in Sou Sou shares have been recorded yet. When a print lands — third-party, direct report, or platform — it appears here with structure, source, and price.
Institutional fund marks
No SEC-registered fund has reported a fair-value mark on Sou Sou in its N-PORT filings yet. We sweep new filings monthly.