A business in context

BLLN research notebook

Read the disclosures. Follow the relationships. Keep the dates in view.

Filing timeline

SEC submissions · retrieved 2026-10-20 · 8029 issuers; up to 32 recent company reports and 8 ownership-change filings per issuer

2026-10-19
4 · Ownership change
Report date 2026-10-13 · 0002070849-26-000074
2026-10-16
4 · Ownership change
Report date 2026-10-14 · 0002088549-26-000015
2026-10-14
4 · Ownership change
Report date 2026-10-12 · 0002070849-26-000072
2026-10-13
4 · Ownership change
Report date 2026-10-08 · 0002070849-26-000071
2026-10-07
4 · Ownership change
Report date 2026-10-05 · 0002087127-26-000015
2026-10-07
4 · Ownership change
Report date 2026-10-05 · 0002087126-26-000018
2026-09-30
4 · Ownership change
Report date 2026-09-28 · 0002088549-26-000012
2026-09-28
4 · Ownership change
Report date 2026-09-24 · 0002087127-26-000013
2026-08-05
10-Q · Quarterly report
Report date 2026-06-30 · 0002070849-26-000050
2026-08-05
8-K · Current report
Report date 2026-08-05 · 0002070849-26-000048 · Items 2.02,9.01
2026-06-29
8-K · Current report
Report date 2026-06-23 · 0002070849-26-000042 · Items 1.01,2.03,9.01
2026-06-16
8-K · Current report
Report date 2026-06-10 · 0002070849-26-000040 · Items 1.01,2.03,9.01
2026-05-06
10-Q · Quarterly report
Report date 2026-03-31 · 0002070849-26-000031
2026-05-06
8-K · Current report
Report date 2026-05-06 · 0002070849-26-000029 · Items 2.02,9.01
2026-04-21
DEF 14A · Proxy statement
Report date 2026-06-10 · 0002070849-26-000024
2026-03-11
10-K · Annual report
Report date 2025-12-31 · 0002070849-26-000017
2026-03-04
8-K · Current report
Report date 2026-03-04 · 0002070849-26-000013 · Items 2.02,5.02,9.01
2026-01-12
8-K · Current report
Report date 2026-01-12 · 0002070849-26-000010 · Items 2.02,7.01
2025-12-10
10-Q · Quarterly report
Report date 2025-09-30 · 0001628280-25-056321
2025-12-09
8-K · Current report
Report date 2025-12-09 · 0001628280-25-056077 · Items 2.02,5.02,9.01
2025-11-10
8-K · Current report
Report date 2025-11-07 · 0001193125-25-274195 · Items 5.03,8.01,9.01

Reported insider transactions

Download transactions CSV

SEC insider transactions · retrieved 2026-10-15 · 2026 Q3: filings in this completed quarter; not a live transaction feed

Purchases and sales include open-market or private transactions. Grants, exercises and tax withholding are shown separately. Amendments and joint reports can overlap; rows are not a net-buying score. Prices retain the filing's units; consult its footnotes.

Transaction rows by code · counts, not monetary totals

P · PurchaseS · SaleA · Grant / awardM · Exercise / conversionF · Tax / exercise paymentG · Gift

201 matching transaction rows. Showing 1 to 50.

Transaction / filed	Reporting owner	Type	Security	Shares	Reported price
2026-09-28 2026-09-30	Atay Oguzhan 10b5-1 checkbox reported	M · Exercise / conversion Acquired	Class A Common Stock	8333.0	2.8
2026-09-28 2026-09-30	Atay Oguzhan 10b5-1 checkbox reported	S · Sale Disposed	Class A Common Stock	2666.0	120.64
2026-09-28 2026-09-30	Atay Oguzhan 10b5-1 checkbox reported	S · Sale Disposed	Class A Common Stock	8333.0	120.64
2026-09-28 2026-09-30	Atay Oguzhan 10b5-1 checkbox reported	M · Exercise / conversion Disposed	Stock Option (right to buy) Derivative security	8333.0	2.8
2026-09-24 2026-09-28	Tsao David 10b5-1 checkbox reported	M · Exercise / conversion Acquired	Class A Common Stock	3333.0	2.8
2026-09-24 2026-09-28	Tsao David 10b5-1 checkbox reported	S · Sale Disposed	Class A Common Stock	3333.0	125.0
2026-09-24 2026-09-28	Tsao David 10b5-1 checkbox reported	M · Exercise / conversion Disposed	Stock Option (right to buy) Derivative security	3333.0	2.8
2026-09-24 2026-09-28	ten Bosch John Roderick 10b5-1 checkbox reported	S · Sale Disposed	Class A Common Stock	1416.0	120.0
2026-09-21 2026-09-23	ten Bosch John Roderick 10b5-1 checkbox reported	S · Sale Disposed	Class A Common Stock	1416.0	106.61
2026-09-17 2026-09-21	Lynch Thomas P. 10b5-1 checkbox reported	S · Sale Disposed	Class A Common Stock	2920.0	110.31
2026-09-17 2026-09-21	Lynch Thomas P. 10b5-1 checkbox reported	S · Sale Disposed	Class A Common Stock	5840.0	110.29
2026-09-17 2026-09-21	Lynch Thomas P. 10b5-1 checkbox reported	S · Sale Disposed	Class A Common Stock	6968.0	110.3
2026-09-17 2026-09-21	Lynch Thomas P. 10b5-1 checkbox reported	S · Sale Disposed	Class A Common Stock	19384.0	110.36
2026-09-17 2026-09-21	Lynch Thomas P. 10b5-1 checkbox reported	M · Exercise / conversion Acquired	Class A Common Stock	5840.0	30.78
2026-09-17 2026-09-21	Lynch Thomas P. 10b5-1 checkbox reported	M · Exercise / conversion Acquired	Class A Common Stock	2920.0	17.12
2026-09-17 2026-09-21	Lynch Thomas P. 10b5-1 checkbox reported	M · Exercise / conversion Acquired	Class A Common Stock	6968.0	11.55
2026-09-17 2026-09-21	Lynch Thomas P. 10b5-1 checkbox reported	M · Exercise / conversion Acquired	Class A Common Stock	19384.0	8.65
2026-09-17 2026-09-21	Lynch Thomas P. 10b5-1 checkbox reported	M · Exercise / conversion Disposed	Stock Option (right to buy) Derivative security	2920.0	17.12
2026-09-17 2026-09-21	Lynch Thomas P. 10b5-1 checkbox reported	M · Exercise / conversion Disposed	Stock Option (right to buy) Derivative security	6968.0	11.55
2026-09-17 2026-09-21	Lynch Thomas P. 10b5-1 checkbox reported	M · Exercise / conversion Disposed	Stock Option (right to buy) Derivative security	19384.0	8.65
2026-09-17 2026-09-21	Lynch Thomas P. 10b5-1 checkbox reported	M · Exercise / conversion Disposed	Stock Option (right to buy) Derivative security	5840.0	30.78
2026-09-14 2026-09-16	Atay Oguzhan 10b5-1 checkbox reported	S · Sale Disposed	Class A Common Stock	2010.0	100.78
2026-09-14 2026-09-16	Atay Oguzhan 10b5-1 checkbox reported	S · Sale Disposed	Class A Common Stock	3143.0	101.49
2026-09-14 2026-09-16	Atay Oguzhan 10b5-1 checkbox reported	S · Sale Disposed	Class A Common Stock	2666.0	98.0
2026-09-14 2026-09-16	Atay Oguzhan 10b5-1 checkbox reported	S · Sale Disposed	Class A Common Stock	2666.0	98.0
2026-09-14 2026-09-16	Atay Oguzhan 10b5-1 checkbox reported	M · Exercise / conversion Acquired	Class A Common Stock	16666.0	2.8
2026-09-14 2026-09-16	Atay Oguzhan 10b5-1 checkbox reported	S · Sale Disposed	Class A Common Stock	1500.0	99.57
2026-09-14 2026-09-16	Atay Oguzhan 10b5-1 checkbox reported	S · Sale Disposed	Class A Common Stock	4465.0	98.63
2026-09-14 2026-09-16	Atay Oguzhan 10b5-1 checkbox reported	S · Sale Disposed	Class A Common Stock	2456.0	99.57
2026-09-14 2026-09-16	Atay Oguzhan 10b5-1 checkbox reported	S · Sale Disposed	Class A Common Stock	2531.0	100.58
2026-09-14 2026-09-16	Atay Oguzhan 10b5-1 checkbox reported	S · Sale Disposed	Class A Common Stock	7214.0	101.44
2026-09-14 2026-09-16	Atay Oguzhan 10b5-1 checkbox reported	S · Sale Disposed	Class A Common Stock	1680.0	98.64
2026-09-14 2026-09-16	Atay Oguzhan 10b5-1 checkbox reported	M · Exercise / conversion Acquired	Class A Common Stock	8333.0	2.8
2026-09-14 2026-09-16	Atay Oguzhan 10b5-1 checkbox reported	M · Exercise / conversion Disposed	Stock Option (right to buy) Derivative security	16666.0	2.8
2026-09-14 2026-09-16	Atay Oguzhan 10b5-1 checkbox reported	M · Exercise / conversion Disposed	Stock Option (right to buy) Derivative security	8333.0	2.8
2026-09-10 2026-09-14	Sakakibara Shan Riku	G · Gift Disposed	Class A Common Stock	3500.0	0.0
2026-09-09 2026-09-11	Tsao David 10b5-1 checkbox reported	M · Exercise / conversion Acquired	Class A Common Stock	10000.0	2.8
2026-09-09 2026-09-11	Tsao David 10b5-1 checkbox reported	M · Exercise / conversion Acquired	Class A Common Stock	10000.0	2.8
2026-09-09 2026-09-11	Tsao David 10b5-1 checkbox reported	S · Sale Disposed	Class A Common Stock	10000.0	97.54
2026-09-09 2026-09-11	Tsao David 10b5-1 checkbox reported	S · Sale Disposed	Class A Common Stock	10000.0	100.0
2026-09-09 2026-09-11	Tsao David 10b5-1 checkbox reported	M · Exercise / conversion Disposed	Stock Option (right to buy) Derivative security	10000.0	2.8
2026-09-09 2026-09-11	Tsao David 10b5-1 checkbox reported	M · Exercise / conversion Disposed	Stock Option (right to buy) Derivative security	10000.0	2.8
2026-09-09 2026-09-11	ten Bosch John Roderick 10b5-1 checkbox reported	S · Sale Disposed	Class A Common Stock	1416.0	97.54
2026-09-09 2026-09-10	Atay Oguzhan	G · Gift Disposed	Class A Common Stock	20000.0	0.0
2026-09-08 2026-09-08	Tsao David	G · Gift Disposed	Class A Common Stock	20000.0	0.0
2026-09-08 2026-09-10	Lynch Thomas P. 10b5-1 checkbox reported	M · Exercise / conversion Acquired	Class A Common Stock	3326.0	30.78
2026-09-08 2026-09-10	Lynch Thomas P. 10b5-1 checkbox reported	S · Sale Disposed	Class A Common Stock	232.0	100.92
2026-09-08 2026-09-10	Lynch Thomas P. 10b5-1 checkbox reported	M · Exercise / conversion Acquired	Class A Common Stock	3969.0	11.55
2026-09-08 2026-09-10	Lynch Thomas P. 10b5-1 checkbox reported	M · Exercise / conversion Acquired	Class A Common Stock	11042.0	8.65
2026-09-08 2026-09-10	Lynch Thomas P. 10b5-1 checkbox reported	S · Sale Disposed	Class A Common Stock	358.0	100.82

Identity & relationships

Wikidata structured data · retrieved 2026-10-15 · 1663 unambiguous CIK-linked entities; coverage is incomplete

These are sourced identity and relationship claims, with incomplete coverage. Headquarters locations do not describe sales, assets or operating exposure.

SEC issuer · 0002070849BillionToOne, Inc.

No parent relationship is available in this import; this is not proof of independence.

No verified LEI join available.

GLEIF legal entity reference data · retrieved 2026-10-15 · 1199 checked identities; 0 unavailable records

Search names and former names

Revenue in constant purchasing power

USD revenue expressed in 2026-09 consumer-price dollars. Each annual period uses a CPI-U average weighted by the days in its actual reporting interval. This is a purchasing-power comparison, not a company-specific price or volume measure.

Year ended	Reported USD revenue	CPI-adjusted USD revenue
2024-12-31	$152.58M	$163.89M
2023-12-31	$71.73M	$79.31M

Bureau of Labor Statistics · retrieved 2026-10-20 · 9 selected series; gaps remain missing

Explore the CPI history ↗