Reported relationships
Latest disclosed role at each company.
| Company | Last reported as | Report date | Published |
|---|---|---|---|
| BillionToOne, Inc.BLLN · Entity 3992 | Director · Chief Technology Officer | October 05, 2026 | October 07, 2026 |
Disclosed balances
About these balances
Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.
BillionToOne, Inc.
Report date October 05, 2026 · Filed October 07, 2026
| Security / award | Ownership account | Disclosed shares / units | Disclosure context |
|---|---|---|---|
| Class A Common StockSEC Table I · non-derivative | Direct | 1,000 |
Ending reported balance
After 2026-10-05 transaction · row 13
13 source rows · reconciled sequenceRow 1 · 2026-10-05 · Exercise / conversion · Acquired 10,000 · Balance 11,000 F1: The transactions reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on June 5, 2026. Row 2 · 2026-10-05 · Exercise / conversion · Acquired 10,000 · Balance 21,000 F1: The transactions reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on June 5, 2026. Row 3 · 2026-10-05 · Sale · Disposed 866 · Balance 20,134 F1: The transactions reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on June 5, 2026. F2: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $105.505 to $106.350 per share, inclusive. The holder undertakes to provide, upon written request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. Row 4 · 2026-10-05 · Sale · Disposed 1,909 · Balance 18,225 F1: The transactions reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on June 5, 2026. F3: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $106.730 to $107.700 per share, inclusive. The holder undertakes to provide, upon written request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. Row 5 · 2026-10-05 · Sale · Disposed 4,284 · Balance 13,941 F1: The transactions reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on June 5, 2026. F4: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $107.7354 to $108.710 per share, inclusive. The holder undertakes to provide, upon written request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. Row 6 · 2026-10-05 · Sale · Disposed 2,921 · Balance 11,020 F1: The transactions reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on June 5, 2026. F5: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $108.740 to $109.480 per share, inclusive. The holder undertakes to provide, upon written request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. Row 7 · 2026-10-05 · Sale · Disposed 20 · Balance 11,000 F1: The transactions reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on June 5, 2026. Row 8 · 2026-10-05 · Sale · Disposed 555 · Balance 10,445 F1: The transactions reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on June 5, 2026. F6: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $104.880 to $105.720 per share, inclusive. The holder undertakes to provide, upon written request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. Row 9 · 2026-10-05 · Sale · Disposed 400 · Balance 10,045 F1: The transactions reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on June 5, 2026. F7: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $105.890 to $106.180 per share, inclusive. The holder undertakes to provide, upon written request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. Row 10 · 2026-10-05 · Sale · Disposed 2,200 · Balance 7,845 F1: The transactions reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on June 5, 2026. F8: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $107.010 to $107.970 per share, inclusive. The holder undertakes to provide, upon written request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. Row 11 · 2026-10-05 · Sale · Disposed 4,916 · Balance 2,929 F1: The transactions reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on June 5, 2026. F9: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $108.040 to $109.030 per share, inclusive. The holder undertakes to provide, upon written request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. Row 12 · 2026-10-05 · Sale · Disposed 1,829 · Balance 1,100 F1: The transactions reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on June 5, 2026. F10: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $109.040 to $109.500 per share, inclusive. The holder undertakes to provide, upon written request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. Row 13 · 2026-10-05 · Sale · Disposed 100 · Balance 1,000 F1: The transactions reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on June 5, 2026. |
| Stock Option (right to buy)SEC Table II · derivative / convertible security · Conversion / exercise price $2.80 · Expires 2031-06-07 | Direct | 546,667 |
Reported balance
After 2026-10-05 transaction · row 14
Instrument identity requires review; Table II rows are not merged.
1 source rowRow 14 · 2026-10-05 · Exercise / conversion · Disposed 10,000 · Balance 546,667 F11: The options are fully vested and exercisable. |
| Stock Option (right to buy)SEC Table II · derivative / convertible security · Conversion / exercise price $2.80 · Expires 2031-06-07 | Direct | 536,667 |
Reported balance
After 2026-10-05 transaction · row 15
Instrument identity requires review; Table II rows are not merged.
1 source rowRow 15 · 2026-10-05 · Exercise / conversion · Disposed 10,000 · Balance 536,667 F11: The options are fully vested and exercisable. |
Filing footnotes · ownership attribution and instrument terms
F1: The transactions reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on June 5, 2026.
F2: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $105.505 to $106.350 per share, inclusive. The holder undertakes to provide, upon written request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
F3: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $106.730 to $107.700 per share, inclusive. The holder undertakes to provide, upon written request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
F4: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $107.7354 to $108.710 per share, inclusive. The holder undertakes to provide, upon written request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
F5: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $108.740 to $109.480 per share, inclusive. The holder undertakes to provide, upon written request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
F6: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $104.880 to $105.720 per share, inclusive. The holder undertakes to provide, upon written request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
F7: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $105.890 to $106.180 per share, inclusive. The holder undertakes to provide, upon written request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
F8: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $107.010 to $107.970 per share, inclusive. The holder undertakes to provide, upon written request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
F9: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $108.040 to $109.030 per share, inclusive. The holder undertakes to provide, upon written request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
F10: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $109.040 to $109.500 per share, inclusive. The holder undertakes to provide, upon written request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
F11: The options are fully vested and exercisable.
Transaction history
JSON APIPurchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”
The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.
| Transaction date | Company | Activity / security | Shares / units | Reported price | Reported value | Details |
|---|---|---|---|---|---|---|
| June 15, 2026 Filed Jun 17, 2026 21:47 UTC | BillionToOne, Inc. BLLN · Entity 3992 | SaleClass A Common Stock | 2,398 | $103.63 | $248,502.10 |
DisclosureSEC source: 0002087127-26-000002 · wk-form4_1781732827.xml · nonDerivative · entry 12 Tsao David · CIK 0002087127 · Director · Chief Technology Officer 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 1,563 F1 · kind: The transactions reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 6, 2026. F11 · price: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $103.140 to $104.130 per share, inclusive. The holder undertakes to provide, upon written request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. Read SEC document |
| June 15, 2026 Filed Jun 17, 2026 21:47 UTC | BillionToOne, Inc. BLLN · Entity 3992 | SaleClass A Common Stock | 2,978 | $102.60 | $305,539.23 |
DisclosureSEC source: 0002087127-26-000002 · wk-form4_1781732827.xml · nonDerivative · entry 11 Tsao David · CIK 0002087127 · Director · Chief Technology Officer 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 3,961 F1 · kind: The transactions reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 6, 2026. F10 · price: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $101.980 to $102.970 per share, inclusive. The holder undertakes to provide, upon written request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. Read SEC document |
| June 15, 2026 Filed Jun 17, 2026 21:47 UTC | BillionToOne, Inc. BLLN · Entity 3992 | SaleClass A Common Stock | 2,461 | $101.37 | $249,473.29 |
DisclosureSEC source: 0002087127-26-000002 · wk-form4_1781732827.xml · nonDerivative · entry 10 Tsao David · CIK 0002087127 · Director · Chief Technology Officer 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 6,939 F1 · kind: The transactions reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 6, 2026. F9 · price: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $100.860 to $101.800 per share, inclusive. The holder undertakes to provide, upon written request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. Read SEC document |
| June 15, 2026 Filed Jun 17, 2026 21:47 UTC | BillionToOne, Inc. BLLN · Entity 3992 | SaleClass A Common Stock | 1,000 | $100.05 | $100,053.00 |
DisclosureSEC source: 0002087127-26-000002 · wk-form4_1781732827.xml · nonDerivative · entry 9 Tsao David · CIK 0002087127 · Director · Chief Technology Officer 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 9,400 F1 · kind: The transactions reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 6, 2026. F8 · price: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $99.840 to $100.280 per share, inclusive. The holder undertakes to provide, upon written request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. Read SEC document |
| June 15, 2026 Filed Jun 17, 2026 21:47 UTC | BillionToOne, Inc. BLLN · Entity 3992 | SaleClass A Common Stock | 600 | $98.74 | $59,245.02 |
DisclosureSEC source: 0002087127-26-000002 · wk-form4_1781732827.xml · nonDerivative · entry 8 Tsao David · CIK 0002087127 · Director · Chief Technology Officer 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 10,400 F1 · kind: The transactions reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 6, 2026. F7 · price: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $98.160 to $99.080 per share, inclusive. The holder undertakes to provide, upon written request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. Read SEC document |
| June 15, 2026 Filed Jun 17, 2026 21:47 UTC | BillionToOne, Inc. BLLN · Entity 3992 | SaleClass A Common Stock | 230 | $104.47 | $24,028.56 |
DisclosureSEC source: 0002087127-26-000002 · wk-form4_1781732827.xml · nonDerivative · entry 7 Tsao David · CIK 0002087127 · Director · Chief Technology Officer 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 11,000 F1 · kind: The transactions reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 6, 2026. F6 · price: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $104.360 to $104.610 per share, inclusive. The holder undertakes to provide, upon written request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. Read SEC document |
| June 15, 2026 Filed Jun 17, 2026 21:47 UTC | BillionToOne, Inc. BLLN · Entity 3992 | SaleClass A Common Stock | 2,889 | $103.68 | $299,543.94 |
DisclosureSEC source: 0002087127-26-000002 · wk-form4_1781732827.xml · nonDerivative · entry 6 Tsao David · CIK 0002087127 · Director · Chief Technology Officer 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 11,230 F1 · kind: The transactions reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 6, 2026. F5 · price: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $103.250 to $104.200 per share, inclusive. The holder undertakes to provide, upon written request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. Read SEC document |
| June 15, 2026 Filed Jun 17, 2026 21:47 UTC | BillionToOne, Inc. BLLN · Entity 3992 | SaleClass A Common Stock | 2,816 | $102.77 | $289,411.30 |
DisclosureSEC source: 0002087127-26-000002 · wk-form4_1781732827.xml · nonDerivative · entry 5 Tsao David · CIK 0002087127 · Director · Chief Technology Officer 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 14,119 F1 · kind: The transactions reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 6, 2026. F4 · price: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $102.185 to $103.150 per share, inclusive. The holder undertakes to provide, upon written request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. Read SEC document |
| June 15, 2026 Filed Jun 17, 2026 21:47 UTC | BillionToOne, Inc. BLLN · Entity 3992 | SaleClass A Common Stock | 2,361 | $101.55 | $239,765.22 |
DisclosureSEC source: 0002087127-26-000002 · wk-form4_1781732827.xml · nonDerivative · entry 4 Tsao David · CIK 0002087127 · Director · Chief Technology Officer 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 16,935 F1 · kind: The transactions reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 6, 2026. F3 · price: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $101.120 to $102.020 per share, inclusive. The holder undertakes to provide, upon written request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. Read SEC document |
| June 15, 2026 Filed Jun 17, 2026 21:47 UTC | BillionToOne, Inc. BLLN · Entity 3992 | SaleClass A Common Stock | 1,704 | $100.37 | $171,033.55 |
DisclosureSEC source: 0002087127-26-000002 · wk-form4_1781732827.xml · nonDerivative · entry 3 Tsao David · CIK 0002087127 · Director · Chief Technology Officer 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 19,296 F1 · kind: The transactions reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 6, 2026. F2 · price: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $100.000 to $100.9175 per share, inclusive. The holder undertakes to provide, upon written request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. Read SEC document |
| June 15, 2026 Filed Jun 17, 2026 21:47 UTC | BillionToOne, Inc. BLLN · Entity 3992 | Exercise / conversionClass A Common Stock | 10,000 | $2.80 | $28,000.00 |
DisclosureSEC source: 0002087127-26-000002 · wk-form4_1781732827.xml · nonDerivative · entry 2 Tsao David · CIK 0002087127 · Director · Chief Technology Officer 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 21,000 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · kind: The transactions reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 6, 2026. Read SEC document |
| June 15, 2026 Filed Jun 17, 2026 21:47 UTC | BillionToOne, Inc. BLLN · Entity 3992 | Exercise / conversionClass A Common Stock | 10,000 | $2.80 | $28,000.00 |
DisclosureSEC source: 0002087127-26-000002 · wk-form4_1781732827.xml · nonDerivative · entry 1 Tsao David · CIK 0002087127 · Director · Chief Technology Officer 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 11,000 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · kind: The transactions reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 6, 2026. Read SEC document |
| November 07, 2025 Filed Nov 12, 2025 23:12 UTC | BillionToOne, Inc. BLLN · Entity 3992 | OtherStock Option (right to buy) · Derivative | 501,551 | Not disclosed Strike: $20.04 | Not disclosed |
DisclosureSEC source: 0001193125-25-278138 · ownership.xml · derivative · entry 9 Tsao David · CIK 0002087127 · Director · Chief Technology Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 501,551 Underlying: Class A Common Stock · 501,551 shares Expires 2035-06-18 F1 · kind: Pursuant to a reclassification exempt under Rule 16b-7, each share of Common Stock was automatically reclassified into one share of Class A common stock immediately prior to the completion of the Issuer's initial public offering of Class A common stock (the "Offering"). F1 · price: Pursuant to a reclassification exempt under Rule 16b-7, each share of Common Stock was automatically reclassified into one share of Class A common stock immediately prior to the completion of the Issuer's initial public offering of Class A common stock (the "Offering"). F6 · derivative.exercise_date: The options are subject to a service-based vesting requirement, which shall be satisfied over a six-year period. The options vest and become exercisable in equal monthly installments commencing on June 11, 2025, subject to the Reporting Person's continuous service with the Issuer through each such vesting date. Read SEC document |
| November 07, 2025 Filed Nov 12, 2025 23:12 UTC | BillionToOne, Inc. BLLN · Entity 3992 | OtherStock Option (right to buy) · Derivative | 501,551 | Not disclosed Strike: $20.04 | Not disclosed |
DisclosureSEC source: 0001193125-25-278138 · ownership.xml · derivative · entry 8 Tsao David · CIK 0002087127 · Director · Chief Technology Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 501,551 shares Expires 2035-06-18 F1 · kind: Pursuant to a reclassification exempt under Rule 16b-7, each share of Common Stock was automatically reclassified into one share of Class A common stock immediately prior to the completion of the Issuer's initial public offering of Class A common stock (the "Offering"). F1 · price: Pursuant to a reclassification exempt under Rule 16b-7, each share of Common Stock was automatically reclassified into one share of Class A common stock immediately prior to the completion of the Issuer's initial public offering of Class A common stock (the "Offering"). F6 · derivative.exercise_date: The options are subject to a service-based vesting requirement, which shall be satisfied over a six-year period. The options vest and become exercisable in equal monthly installments commencing on June 11, 2025, subject to the Reporting Person's continuous service with the Issuer through each such vesting date. Read SEC document |
| November 07, 2025 Filed Nov 12, 2025 23:12 UTC | BillionToOne, Inc. BLLN · Entity 3992 | OtherStock Option (right to buy) · Derivative | 640,000 | Not disclosed Strike: $2.80 | Not disclosed |
DisclosureSEC source: 0001193125-25-278138 · ownership.xml · derivative · entry 7 Tsao David · CIK 0002087127 · Director · Chief Technology Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 640,000 Underlying: Class A Common Stock · 640,000 shares Expires 2031-06-07 F1 · kind: Pursuant to a reclassification exempt under Rule 16b-7, each share of Common Stock was automatically reclassified into one share of Class A common stock immediately prior to the completion of the Issuer's initial public offering of Class A common stock (the "Offering"). F1 · price: Pursuant to a reclassification exempt under Rule 16b-7, each share of Common Stock was automatically reclassified into one share of Class A common stock immediately prior to the completion of the Issuer's initial public offering of Class A common stock (the "Offering"). F5 · derivative.exercise_date: The options are fully vested and exercisable. Read SEC document |
| November 07, 2025 Filed Nov 12, 2025 23:12 UTC | BillionToOne, Inc. BLLN · Entity 3992 | OtherStock Option (right to buy) · Derivative | 640,000 | Not disclosed Strike: $2.80 | Not disclosed |
DisclosureSEC source: 0001193125-25-278138 · ownership.xml · derivative · entry 6 Tsao David · CIK 0002087127 · Director · Chief Technology Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 640,000 shares Expires 2031-06-07 F1 · kind: Pursuant to a reclassification exempt under Rule 16b-7, each share of Common Stock was automatically reclassified into one share of Class A common stock immediately prior to the completion of the Issuer's initial public offering of Class A common stock (the "Offering"). F1 · price: Pursuant to a reclassification exempt under Rule 16b-7, each share of Common Stock was automatically reclassified into one share of Class A common stock immediately prior to the completion of the Issuer's initial public offering of Class A common stock (the "Offering"). F5 · derivative.exercise_date: The options are fully vested and exercisable. Read SEC document |
| November 07, 2025 Filed Nov 12, 2025 23:12 UTC | BillionToOne, Inc. BLLN · Entity 3992 | OtherClass B Common Stock · Derivative | 2,325,108 | $0.00 | $0.00 |
DisclosureSEC source: 0001193125-25-278138 · ownership.xml · derivative · entry 5 Tsao David · CIK 0002087127 · Director · Chief Technology Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 2,325,108 Underlying: Class A Common Stock · 2,325,108 shares Expires not disclosed F4 · derivative.exercise_price: Each share of Class B Common Stock is convertible into one share of Class A common stock at the option of the holder. Class B common stock will convert automatically on a one-for-one basis into shares of the Issuer's Class A common stock upon the earliest of (i) seven years from the date of filing of the amended and restated certificate of incorporation, in connection with the Offering and (ii) the date specified by a vote of the holders of Class B common stock representing a majority of the outstanding shares of Class B common stock. F2 · kind: Following the reclassification of Common Stock into Class A Common Stock, the shares of Class A common stock were exchanged at a 1:1 ratio for shares of Class B common stock in a transaction previously approved by the Issuer's board of directors. F4 · derivative.exercise_date: Each share of Class B Common Stock is convertible into one share of Class A common stock at the option of the holder. Class B common stock will convert automatically on a one-for-one basis into shares of the Issuer's Class A common stock upon the earliest of (i) seven years from the date of filing of the amended and restated certificate of incorporation, in connection with the Offering and (ii) the date specified by a vote of the holders of Class B common stock representing a majority of the outstanding shares of Class B common stock. F4 · derivative.expiration_date: Each share of Class B Common Stock is convertible into one share of Class A common stock at the option of the holder. Class B common stock will convert automatically on a one-for-one basis into shares of the Issuer's Class A common stock upon the earliest of (i) seven years from the date of filing of the amended and restated certificate of incorporation, in connection with the Offering and (ii) the date specified by a vote of the holders of Class B common stock representing a majority of the outstanding shares of Class B common stock. Read SEC document |
| November 07, 2025 Filed Nov 12, 2025 23:12 UTC | BillionToOne, Inc. BLLN · Entity 3992 | PurchaseClass A Common Stock | 1,000 | $60.00 | $60,000.00 |
DisclosureSEC source: 0001193125-25-278138 · ownership.xml · nonDerivative · entry 4 Tsao David · CIK 0002087127 · Director · Chief Technology Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 1,000 F3 · kind: These shares of Class A common stock were purchased by the Reporting Person through a directed share program in connection with the Offering. Read SEC document |
| November 07, 2025 Filed Nov 12, 2025 23:12 UTC | BillionToOne, Inc. BLLN · Entity 3992 | OtherClass A Common Stock | 2,325,108 | Not disclosed | Not disclosed |
DisclosureSEC source: 0001193125-25-278138 · ownership.xml · nonDerivative · entry 3 Tsao David · CIK 0002087127 · Director · Chief Technology Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 0 F2 · kind: Following the reclassification of Common Stock into Class A Common Stock, the shares of Class A common stock were exchanged at a 1:1 ratio for shares of Class B common stock in a transaction previously approved by the Issuer's board of directors. F2 · price: Following the reclassification of Common Stock into Class A Common Stock, the shares of Class A common stock were exchanged at a 1:1 ratio for shares of Class B common stock in a transaction previously approved by the Issuer's board of directors. Read SEC document |
| November 07, 2025 Filed Nov 12, 2025 23:12 UTC | BillionToOne, Inc. BLLN · Entity 3992 | OtherClass A Common Stock | 2,325,108 | Not disclosed | Not disclosed |
DisclosureSEC source: 0001193125-25-278138 · ownership.xml · nonDerivative · entry 2 Tsao David · CIK 0002087127 · Director · Chief Technology Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 2,325,108 F1 · kind: Pursuant to a reclassification exempt under Rule 16b-7, each share of Common Stock was automatically reclassified into one share of Class A common stock immediately prior to the completion of the Issuer's initial public offering of Class A common stock (the "Offering"). F1 · price: Pursuant to a reclassification exempt under Rule 16b-7, each share of Common Stock was automatically reclassified into one share of Class A common stock immediately prior to the completion of the Issuer's initial public offering of Class A common stock (the "Offering"). Read SEC document |
| November 07, 2025 Filed Nov 12, 2025 23:12 UTC | BillionToOne, Inc. BLLN · Entity 3992 | OtherCommon Stock | 2,325,108 | Not disclosed | Not disclosed |
DisclosureSEC source: 0001193125-25-278138 · ownership.xml · nonDerivative · entry 1 Tsao David · CIK 0002087127 · Director · Chief Technology Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 0 F1 · kind: Pursuant to a reclassification exempt under Rule 16b-7, each share of Common Stock was automatically reclassified into one share of Class A common stock immediately prior to the completion of the Issuer's initial public offering of Class A common stock (the "Offering"). F1 · price: Pursuant to a reclassification exempt under Rule 16b-7, each share of Common Stock was automatically reclassified into one share of Class A common stock immediately prior to the completion of the Issuer's initial public offering of Class A common stock (the "Offering"). Read SEC document |
Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.