![David Tsao](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>)
David Tsao
Founder at
BILLIONTOONE, INC.
Net worth: 322 M $ as of 31/07/2026
Profile
David Tsao is the founder of BillionToOne, Inc., founded in 2016, where the titles held include President, Chief Technology Officer, and Director.
Former jobs include Principal at Northrop Grumman Corp.
and Software Engineer at Adku, Inc. Education includes undergraduate studies at Princeton University.
Known holdings in public companies
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
BILLIONTOONE, INC. 51.07% | 31/03/2026 | 2,325,108 ( 51.07% ) | 322 M $ | 31/07/2026 |
| 10/08/2026 | 1,000 ( 0% ) | 138 600 $ | 31/07/2026 |
David Tsao active positions
| Companies | Position | Start |
|---|---|---|
| BILLIONTOONE, INC. | Founder | 01/01/2016 |
Former positions of David Tsao
| Companies | Position | End |
|---|---|---|
| NORTHROP GRUMMAN CORPORATION | Corporate Officer/Principal | - |
Adku, Inc.
 Adku, Inc. Packaged SoftwareTechnology Services Develops software solutions for the ecommerce industry | Corporate Officer/Principal | - |
Training of David Tsao
Experiences
Positions held
Active
Inactive
Listed companies
Private companies
Connections
26
1st degree connections
4
1st degree companies
Male
Female
Members of the board
Executives
Linked companies
| Private companies | 4 |
|---|---|
Northrop Grumman Corp.
 Northrop Grumman Corp. Aerospace & DefenseElectronic Technology Designs and manufactures space, mission, aeronautical & missile systems | Electronic Technology |
Princeton University
 Princeton University Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Adku, Inc.
Adku, Inc. Packaged SoftwareTechnology Services Develops software solutions for the ecommerce industry | Technology Services |
BillionToOne, Inc.
 BillionToOne, Inc. Medical/Nursing ServicesHealth Services Operates as a precision diagnostics company that quantifies biology to create molecular diagnostics | Health Services |
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