![Sadaaki Kato](data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="%231b1b1b" class="bi bi-person-fill" viewBox="0 0 16 16"><path d="M3 14s-1 0-1-1 1-4 6-4 6 3 6 4-1 1-1 1zm5-6a3 3 0 1 0 0-6 3 3 0 0 0 0 6"/></svg>)
Sadaaki Kato
Founder at
NOTE INC.
Net worth: 116 M $ as of 30/09/2026
Profile
Sadaaki Kato is the founder of note, Inc., founded in 2011, and holds the title of Chief Executive Officer & Representative Director.
Former jobs include Principal at DIAMOND, Inc. and Principal at ASCII Media Works, Inc.
Known holdings in public companies
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
NOTE INC. 26.2% | 15/04/2026 | 5,087,000 ( 26.2% ) | 116 M $ | 30/09/2026 |
Sadaaki Kato active positions
| Companies | Position | Start |
|---|---|---|
| NOTE INC. | Founder | 08/12/2011 |
Former positions of Sadaaki Kato
| Companies | Position | End |
|---|---|---|
ASCII Media Works, Inc.
 ASCII Media Works, Inc. Information Technology ServicesTechnology Services Provides web contents development services | Corporate Officer/Principal | - |
DIAMOND, Inc.
 DIAMOND, Inc. Publishing: Books/MagazinesConsumer Services Provides online magazines and books publishing services | Corporate Officer/Principal | - |
Experiences
Positions held
Active
Inactive
Listed companies
Private companies
Connections
12
1st degree connections
3
1st degree companies
Male
Female
Members of the board
Executives
Linked companies
| Private companies | 3 |
|---|---|
DIAMOND, Inc.
DIAMOND, Inc. Publishing: Books/MagazinesConsumer Services Provides online magazines and books publishing services | Consumer Services |
ASCII Media Works, Inc.
ASCII Media Works, Inc. Information Technology ServicesTechnology Services Provides web contents development services | Technology Services |
note, Inc.
 note, Inc. Internet Software/ServicesTechnology Services Provides digital content planning, production and delivery services | Technology Services |
- Stock Market
- Insiders
- Sadaaki Kato
