BillionToOne Ownership

Who are the major shareholders and have insiders been buying or selling?

Recent Insider Transactions

NasdaqGS:BLLN Recent Insider Transactions by Companies or Individuals
Date	Value	Name	Entity	Shares	Max Price
07 Nov 25	BuyUS$2,499,960	Adams Street Partners, LLC	Company	41,666	US$60.00
07 Nov 25	BuyUS$150,000	Akshay Rai	Individual	2,500	US$60.00
07 Nov 25	BuyUS$414,000	Nancy Johnson	Individual	6,900	US$60.00
07 Nov 25	BuyUS$48,000	John Bosch	Individual	800	US$60.00
07 Nov 25	BuyUS$60,000	David Tsao	Individual	1,000	US$60.00
07 Nov 25	BuyUS$6,000	Thomas Lynch	Individual	100	US$60.00

Insider Trading Volume

Insider Buying: Insufficient data to determine if insiders have bought more shares than they have sold in the past 3 months.

Ownership Breakdown

What is the ownership structure of BLLN?
Owner Type	Number of Shares	Ownership Percentage
Private Companies	1,895,569	4.12%
Individual Insiders	5,132,307	11.2%
VC/PE Firms	11,448,796	24.9%
Institutions	11,845,513	25.8%
General Public	15,673,299	34.1%

Dilution of Shares: BLLN only recently listed within the past 12 months

Top Shareholders

Top 25 shareholders own 61.4% of the company

Ownership	Name	Shares	Current Value	Change %	Portfolio %
17.1%	Hummingbird Ventures Management NV	7,887,187	US$782.9m	0%	100.0%
7.74%	Libertus Capital Limited	3,561,609	US$353.5m	0%	no data
5.28%	Oguzhan Atay	2,427,542	US$241.0m	0%	no data
5.06%	David Tsao	2,326,108	US$230.9m	0%	no data
3.88%	Wipro Enterprises Private Limited	1,784,414	US$177.1m	0%	no data
3.72%	Adams Street Partners, LLC	1,711,430	US$169.9m	0%	56.51%
2.74%	Baillie Gifford & Co.	1,259,993	US$125.1m	-0.64%	0.06%
2.39%	Civilization Ventures Management, LLC	1,099,431	US$109.1m	0%	98.59%
1.61%	Baron Capital Group, Inc.	741,485	US$73.6m	336%	0.18%
1.6%	T. Rowe Price Group, Inc.	737,518	US$73.2m	25.8%	0.01%
1.54%	Neuberger Berman Investment Advisers LLC	709,214	US$70.4m	1.19%	0.05%
1.12%	NVP Associates, LLC	513,330	US$51.0m	0%	6.98%
0.88%	Invesco Ltd.	406,512	US$40.4m	114%	0.01%
0.81%	Emerald Advisers, LLC	371,768	US$36.9m	21.1%	0.6%
0.8%	Wasatch Advisors LP	369,638	US$36.7m	0%	0.13%
0.79%	UBS Asset Management AG	362,191	US$36.0m	39.7%	no data
0.6%	JP Morgan Asset Management	277,598	US$27.6m	-26.6%	no data
0.6%	FundRock Management Company S.A.	277,508	US$27.5m	0%	0.76%
0.51%	Napean Trading And Investment Company (Singapore) Pte Ltd	233,333	US$23.2m	0%	7.34%
0.49%	AllianceBernstein L.P.	223,251	US$22.2m	7.03%	0.01%
0.48%	Columbia Management Investment Advisers, LLC	220,035	US$21.8m	80%	no data
0.48%	Shan Sakakibara	220,000	US$21.8m	0%	no data
0.4%	Vanguard Capital Management, LLC	182,463	US$18.1m	0%	no data
0.39%	Capital Research and Management Company	178,000	US$17.7m	0%	no data
0.35%	Massachusetts Financial Services Company	159,573	US$15.8m	-2.34%	no data

Company Analysis and Financial Data Status

Data	Last Updated (UTC time)
Company Analysis	2026/06/11 12:21
End of Day Share Price	2026/06/11 00:00
Earnings	2026/03/31
Annual Earnings	2025/12/31

Data Sources

The data used in our company analysis is from S&P Global Market Intelligence LLC. The following data is used in our analysis model to generate this report. Data is normalised which can introduce a delay from the source being available.

Package	Data	Timeframe	Example US Source ^*
Company Financials	10 years	Income statement Cash flow statement Balance sheet	SEC Form 10-K SEC Form 10-Q
Analyst Consensus Estimates	+3 years	Forecast financials Analyst price targets	Analyst Research Reports Blue Matrix
Market Prices	30 years	Stock prices Dividends, Splits and Actions	ICE Market Data SEC Form S-1
Ownership	10 years	Top shareholders Insider trading	SEC Form 4 SEC Form 13D
Management	10 years	Leadership team Board of directors	SEC Form 10-K SEC Form DEF 14A
Key Developments	10 years	Company announcements	SEC Form 8-K

^* Example for US securities, for non-US equivalent regulatory forms and sources are used.

Unless specified all financial data is based on a yearly period but updated quarterly. This is known as Trailing Twelve Month (TTM) or Last Twelve Month (LTM) Data. Learn more.

Analysis Model and Snowflake

Details of the analysis model used to generate this report is available on our Github page, we also have guides on how to use our reports and tutorials on Youtube.

Learn about the world class team who designed and built the Simply Wall St analysis model.

Industry and Sector Metrics

Our industry and section metrics are calculated every 6 hours by Simply Wall St, details of our process are available on Github.

Analyst Sources

BillionToOne, Inc. is covered by 9 analysts. 8 of those analysts submitted the estimates of revenue or earnings used as inputs to our report. Analysts submissions are updated throughout the day.

Analyst	Institution
Mark Massaro	BTIG
Subhalaxmi Nambi	Guggenheim Securities, LLC
Tycho Peterson	Jefferies LLC