Computed from SEC EDGAR filings and closing prices — not copied from any wealth ranking. Dataset . How we calculate this.

Market capitalisation
$4.66B
46,403,350 shares ≈ see note Covers every share class this company has on file.
Insiders on file
8
people who have filed Form 3, 4 or 5 naming this issuer
Value of insider-held stock
$842.24M
from the holdings reported on Forms 3/4/5; this figure has no separate as-of date on file
Insider-held share of market cap
18.07%
insider-held value divided by market capitalisation

What BillionToOne, Inc. reports

Revenue and net income below are for fiscal period FY2025, the period label carried by this company’s own annual XBRL filings to the SEC. Fiscal years do not line up between companies — one company’s FY2026 can cover much the same months as another’s FY2025 — so compare the periods, not just the numbers.

Revenue
$305.11M
FY2025 annual revenue, from this company’s own annual XBRL filings to the SEC
Net income
$7.45M
FY2025 profit for the period, from this company’s own annual XBRL filings to the SEC
Employees
713
Yahoo Finance
Where the employee count comes from

Headcount comes from Yahoo Finance, not from a filing. The date beside it is the day we retrieved the figure — it is not the date the company counted its staff, and Yahoo does not publish that date. Unlike the SEC filings behind the other figures on this page, this one carries no open licence, so we publish the number and nothing else from that source.

Insiders at BillionToOne, Inc.

Shares is what each person last reported holding here.

Everyone below has filed at least one insider report against this company.

Value is that share count priced at the same closing price used everywhere else on this site. A row priced from only some of a person’s securities says so — we do not quietly present a partial sum as a complete one.

Rows are grouped by the role each person reports.

The role comes from the relationship boxes a person ticks on their own insider filings — officer, director, ten per cent owner — not from anything we infer. Somebody who is both an officer and a director appears once, in the combined group, so the row count still matches the figure at the top of this page. Where no filing states a role we say so instead of guessing one.

People who file insider reports against BillionToOne, Inc..
Insider Reported role Shares Value Last action
Officers 3
Shan Riku Sakakibara Other Executive 220,000 $21.87M S Open-market sale Jul 31, 2026 position reported
John Roderick ten Bosch Executive 37,800 $3.76M S Open-market sale Sep 9, 2026 position reported
Nancy JoAnn Johnson Executive 35,900 $3.57M S Open-market sale Jul 16, 2026 position reported
Officers who also sit on the board 1
Oguzhan Atay Executive 200,000 $19.88M G Bona fide gift Sep 9, 2026 position reported
Directors 4
Akshay Rai Akshay Rai Board Member 3,593,346 $357.14M A Grant or award Jun 10, 2026 position reported
Krishna Kittu Kolluri Board Member 2,827,823 $281.06M J Other acquisition or disposition Aug 26, 2026 position reported
Thomas S Bremner Board Member 881,209 $87.58M A Grant or award Jun 10, 2026 position reported
Firat Ileri Firat Ileri Board Member 678,041 $67.39M A Grant or award Jun 10, 2026 position reported

Events from filings

Detected automatically in the filings linked below. Each headline is built from the numbers in those filings, not written by a model. Newest first; events older than 45 days stay listed and are marked as older.

Oguzhan Atay sold 15,539 BillionToOne, Inc. (BLLN) shares for $2,331,316 on Aug 5, 2026

Large trade for this person

Flagged because this trade was large compared with this person’s own earlier open-market trades in the same currency — not because it is large in absolute terms. A trade that is routine for one insider can be flagged for another.

Oguzhan Atay sold 15,539 BillionToOne, Inc. (BLLN) shares for $2,331,316 on Aug 5, 2026
Date Insider Transaction Shares Price Value Filing
Aug 5, 2026 Oguzhan Atay S Open-market sale 15,539 held after: 0 $150.03 $2,331,316 SEC filing ↗

Source: SEC EDGAR (United States); every row links to where it was published. Event computed Sep 14, 2026.

4 insiders bought BillionToOne, Inc. (BLLN) shares worth $3,111,960 on Nov 7, 2025

Cluster buying

4 different insiders made 9 open-market purchases of this company’s shares within a short window. Each row below is one reported trade.

4 insiders bought BillionToOne, Inc. (BLLN) shares worth $3,111,960 on Nov 7, 2025
Date Insider Transaction Shares Price Value Filing
Nov 7, 2025 John Roderick ten Bosch P Open-market purchase 800 held after: 37,800 $60.00 $48,000 SEC filing ↗
Nov 7, 2025 Nancy JoAnn Johnson P Open-market purchase 6,900 held after: 35,900 $60.00 $414,000 SEC filing ↗
Nov 7, 2025 Thomas S Bremner P Open-market purchase 4,016 held after: 156,456 $60.00 $240,960 SEC filing ↗
Nov 7, 2025 Thomas S Bremner P Open-market purchase 4,084 held after: 159,795 $60.00 $245,040 SEC filing ↗
Nov 7, 2025 Thomas S Bremner P Open-market purchase 3,462 held after: 179,733 $60.00 $207,720 SEC filing ↗
Nov 7, 2025 Thomas S Bremner P Open-market purchase 5,446 held after: 275,364 $60.00 $326,760 SEC filing ↗
Nov 7, 2025 Thomas S Bremner P Open-market purchase 6,867 held after: 246,939 $60.00 $412,020 SEC filing ↗
Nov 7, 2025 Thomas S Bremner P Open-market purchase 17,791 held after: 693,143 $60.00 $1,067,460 SEC filing ↗
Nov 7, 2025 Akshay Rai P Open-market purchase 2,500 held after: 13,509 $60.00 $150,000 SEC filing ↗

Total of the rows above: $3,111,960, in the currency the filings report.

Source: SEC EDGAR (United States); every row links to where it was published. Event computed Sep 14, 2026.

Recent insider transactions

Of the 249 rows we hold, 9 are open-market purchases (P) and 97 open-market sales (S) — the only codes we count as buying or selling.

The rest — awards, shares withheld to pay tax, option exercises, gifts and so on — follow from an employment contract or a transfer arranged off-market, not from a decision to buy or sell, so counting them would turn this into a pay table.

A price of 0.00 is a real reported figure on gifts (G) and share awards (A) — not a gap in our data.

Insider transactions disclosed to the SEC for BillionToOne, Inc., newest first, each with the filing behind it.
Date Insider Transaction Shares Price Value Filing
Sep 9, 2026 John Roderick ten Bosch S Open-market sale 1,416 $97.54 $138.1K SEC filing ↗
Sep 9, 2026 Oguzhan Atay G Bona fide gift 20,000 $0.00 $0 SEC filing ↗
Sep 8, 2026 Oguzhan Atay C Conversion of derivative 20,000 $0.00 $0 SEC filing ↗
Aug 26, 2026 Krishna Kittu Kolluri J Other acquisition or disposition 5,644 $0.00 $0 SEC filing ↗
Aug 26, 2026 Krishna Kittu Kolluri J Other acquisition or disposition 15,244 $0.00 $0 SEC filing ↗
Aug 26, 2026 Krishna Kittu Kolluri J Other acquisition or disposition 1,666 $0.00 $0 SEC filing ↗
Aug 26, 2026 Krishna Kittu Kolluri J Other acquisition or disposition 5,761 $0.00 $0 SEC filing ↗
Aug 26, 2026 Krishna Kittu Kolluri J Other acquisition or disposition 719 $0.00 $0 SEC filing ↗
Aug 26, 2026 Krishna Kittu Kolluri J Other acquisition or disposition 10,921 $0.00 $0 SEC filing ↗
Aug 26, 2026 Krishna Kittu Kolluri J Other acquisition or disposition 38,106 $0.00 $0 SEC filing ↗
Aug 26, 2026 Krishna Kittu Kolluri J Other acquisition or disposition 38,106 $0.00 $0 SEC filing ↗
Aug 26, 2026 Krishna Kittu Kolluri J Other acquisition or disposition 271,028 $0.00 $0 SEC filing ↗
Aug 26, 2026 Krishna Kittu Kolluri J Other acquisition or disposition 2,405 $0.00 $0 SEC filing ↗
Aug 26, 2026 Krishna Kittu Kolluri J Other acquisition or disposition 2,405 $0.00 $0 SEC filing ↗
Aug 26, 2026 Krishna Kittu Kolluri J Other acquisition or disposition 24,222 $0.00 $0 SEC filing ↗
Aug 26, 2026 Krishna Kittu Kolluri J Other acquisition or disposition 7,980 $0.00 $0 SEC filing ↗
Aug 26, 2026 Krishna Kittu Kolluri J Other acquisition or disposition 7,980 $0.00 $0 SEC filing ↗
Aug 26, 2026 Krishna Kittu Kolluri J Other acquisition or disposition 129,780 $0.00 $0 SEC filing ↗
Aug 25, 2026 John Roderick ten Bosch S Open-market sale 1,417 $100.00 $141.7K SEC filing ↗
Aug 10, 2026 John Roderick ten Bosch S Open-market sale 1,417 $92.86 $131.6K SEC filing ↗
Aug 5, 2026 Oguzhan Atay S Open-market sale 15,539 $150.03 $2.33M SEC filing ↗
Aug 5, 2026 Oguzhan Atay M Option exercise or conversion 15,539 $2.80 $43.5K SEC filing ↗
Aug 3, 2026 Oguzhan Atay S Open-market sale 6,250 $137.37 $858.6K SEC filing ↗
Aug 3, 2026 Oguzhan Atay S Open-market sale 6,250 $137.37 $858.6K SEC filing ↗
Aug 3, 2026 Oguzhan Atay S Open-market sale 82 $139.20 $11.4K SEC filing ↗

From SEC Form 4 filings. Every row links to the filing it came from. How we calculate this.

What a Form 4 is

The report an officer, director or large shareholder must file after trading their own company’s stock.

Corporate ownership links — 11 filers hold a position

Who owns BillionToOne, Inc.

Each row is one filer naming this company.

Funds, trusts and other companies file the same ownership forms that executives do. Everything below is taken from those filings, with the position exactly as the filing states it.

Do not add these figures together. 11 of the positions below were reported on filings shared by several filers at once.

Why the same shares appear twice

On a joint filing every named filer is listed against the whole position, so the same block of stock appears under each name. Those rows are marked joint.

Filers holding a position in BillionToOne, Inc.

Funds, trusts and companies that disclose an ownership position in BillionToOne, Inc..
Owner Reported role Shares Filed
NeoTribe Associates I, L.P. TenPercentOwner 3,061,706 joint
Neotribe Ignite Fund I, L.P. TenPercentOwner 3,061,706 joint
Neotribe Ignite Partners I, LLC TenPercentOwner 3,061,706 joint
NeoTribe Partners I, LLC TenPercentOwner 3,061,706 joint
Neotribe Partners SPV I BTO, LLC TenPercentOwner 3,061,706 joint
Neotribe SPV I BTO, LLC TenPercentOwner 3,061,706 joint
NeoTribe Ventures I, L.P. TenPercentOwner 3,061,706 joint
HB&Q NV (HB&Q COMPARTMENT III) TenPercentOwner 2,580,833 joint
Humming Bird Ventures Management NV TenPercentOwner 2,580,833 joint
Hummingbird Opportunity Fund II CommV TenPercentOwner 2,580,833 joint
Hummingbird Ventures III CommV TenPercentOwner 2,580,833 joint

See the full ownership map — every entity that files as an owner of a US public company.

Think a number here is wrong? Open the linked filing and compare — how to report it.

Sources and technical notes

Every figure on this page comes from filings to the U.S. SEC via EDGAR. Nothing here is estimated, and nothing is taken from press coverage or company websites.

Share count: weighted average over the reporting period (us-gaap:WeightedAverageNumberOfSharesOutstandingBasic), taken from BillionToOne, Inc.’s own filings and multiplied by our closing price. Not a single-day figure — treat this market cap and its rank as approximate. Full method.

What that share count means

this company did not tag a cover-page share count we could read, so the figure is the average number of shares outstanding across the whole reporting period rather than a count on any single day. If the company issued or bought back stock during the period, the true count today is higher or lower than this.

We do not take a market cap from a data vendor, and we do not estimate one: the figure is a share count from BillionToOne, Inc.’s own SEC filings multiplied by the closing price we hold for the same stock.