Reported relationships
Latest disclosed role at each company.
| Company | Last reported as | Report date | Published |
|---|---|---|---|
| BillionToOne, Inc.BLLN · Entity 3992 | Director · Chairman and CEO | October 12, 2026 | October 14, 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 12, 2026 · Filed October 14, 2026
| Security / award | Ownership account | Disclosed shares / units | Disclosure context |
|---|---|---|---|
| Class A Common StockSEC Table I · non-derivative | Direct | 0 |
Ending reported balance
After 2026-10-12 transaction · row 6
6 source rows · reconciled sequenceRow 1 · 2026-10-12 · Exercise / conversion · Acquired 16,667 · Balance 16,667 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 · 2026-10-12 · Sale · Disposed 1,961 · Balance 14,706 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 $91.250 to $92.170 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 3 · 2026-10-12 · Sale · Disposed 2,553 · Balance 12,153 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 $92.2596 to $93.255 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 · 2026-10-12 · Sale · Disposed 6,763 · Balance 5,390 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 $93.260 to $94.225 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 · 2026-10-12 · Sale · Disposed 3,869 · Balance 1,521 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 $94.265 to $95.205 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 · 2026-10-12 · Sale · Disposed 1,521 · Balance 0 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 $95.945 to $96.765 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. |
| Class A Common StockSEC Table I · non-derivative | IndirectBy spouse | 151,835 |
Reported balance
After 2026-10-12 transaction · row 7
Account identity is unresolved; indirect or unspecified ownership is not merged.
1 source rowRow 7 · 2026-10-12 · Sale · Disposed 2,667 · Balance 151,835 F7: The transactions reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person's spouse on June 7, 2026. F8: Represents shares held by the Reporting Person's spouse. |
| Stock Option (right to buy)SEC Table II · derivative / convertible security · Conversion / exercise price $2.80 · Expires 2031-06-07 | Direct | 476,962 |
Reported balance
After 2026-10-12 transaction · row 8
Instrument identity requires review; Table II rows are not merged.
1 source rowRow 8 · 2026-10-12 · Exercise / conversion · Disposed 16,667 · Balance 476,962 F9: 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 $91.250 to $92.170 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 $92.2596 to $93.255 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 $93.260 to $94.225 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 $94.265 to $95.205 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 $95.945 to $96.765 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 transactions reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person's spouse on June 7, 2026.
F8: Represents shares held by the Reporting Person's spouse.
F9: 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 |
|---|---|---|---|---|---|---|
| October 12, 2026 Filed Oct 14, 2026 22:10 UTC | BillionToOne, Inc. BLLN · Entity 3992 | Exercise / conversionStock Option (right to buy) · Derivative | 16,667 | $2.80 Strike: $2.80 | $46,667.60 |
DisclosureSEC source: 0002070849-26-000072 · wk-form4_1792015801.xml · derivative · entry 8 Atay Oguzhan · CIK 0002088549 · Director · Chairman and CEO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 476,962 Underlying: Class A Common Stock · 16,667 shares Expires 2031-06-07 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. F9 · derivative.exercise_date: The options are fully vested and exercisable. Read SEC document |
| October 12, 2026 Filed Oct 14, 2026 22:10 UTC | BillionToOne, Inc. BLLN · Entity 3992 | SaleClass A Common Stock | 2,667 | $97.61 | $260,325.87 |
DisclosureSEC source: 0002070849-26-000072 · wk-form4_1792015801.xml · nonDerivative · entry 7 Atay Oguzhan · CIK 0002088549 · Director · Chairman and CEO 10b5-1 filing: Plan reported Ownership: Indirect · By spouse Disclosed balance after: 151,835 F7 · kind: The transactions reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person's spouse on June 7, 2026. F8 · ownership.nature: Represents shares held by the Reporting Person's spouse. Read SEC document |
| October 12, 2026 Filed Oct 14, 2026 22:10 UTC | BillionToOne, Inc. BLLN · Entity 3992 | SaleClass A Common Stock | 1,521 | $96.39 | $146,612.84 |
DisclosureSEC source: 0002070849-26-000072 · wk-form4_1792015801.xml · nonDerivative · entry 6 Atay Oguzhan · CIK 0002088549 · Director · Chairman and CEO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 0 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 June 5, 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 $95.945 to $96.765 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 |
| October 12, 2026 Filed Oct 14, 2026 22:10 UTC | BillionToOne, Inc. BLLN · Entity 3992 | SaleClass A Common Stock | 3,869 | $94.61 | $366,058.86 |
DisclosureSEC source: 0002070849-26-000072 · wk-form4_1792015801.xml · nonDerivative · entry 5 Atay Oguzhan · CIK 0002088549 · Director · Chairman and CEO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 1,521 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 June 5, 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 $94.265 to $95.205 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 |
| October 12, 2026 Filed Oct 14, 2026 22:10 UTC | BillionToOne, Inc. BLLN · Entity 3992 | SaleClass A Common Stock | 6,763 | $93.65 | $633,334.66 |
DisclosureSEC source: 0002070849-26-000072 · wk-form4_1792015801.xml · nonDerivative · entry 4 Atay Oguzhan · CIK 0002088549 · Director · Chairman and CEO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 5,390 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 June 5, 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 $93.260 to $94.225 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 |
| October 12, 2026 Filed Oct 14, 2026 22:10 UTC | BillionToOne, Inc. BLLN · Entity 3992 | SaleClass A Common Stock | 2,553 | $93.05 | $237,546.44 |
DisclosureSEC source: 0002070849-26-000072 · wk-form4_1792015801.xml · nonDerivative · entry 3 Atay Oguzhan · CIK 0002088549 · Director · Chairman and CEO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 12,153 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 June 5, 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 $92.2596 to $93.255 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 |
| October 12, 2026 Filed Oct 14, 2026 22:10 UTC | BillionToOne, Inc. BLLN · Entity 3992 | SaleClass A Common Stock | 1,961 | $91.57 | $179,571.12 |
DisclosureSEC source: 0002070849-26-000072 · wk-form4_1792015801.xml · nonDerivative · entry 2 Atay Oguzhan · CIK 0002088549 · Director · Chairman and CEO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 14,706 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 June 5, 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 $91.250 to $92.170 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 |
| October 12, 2026 Filed Oct 14, 2026 22:10 UTC | BillionToOne, Inc. BLLN · Entity 3992 | Exercise / conversionClass A Common Stock | 16,667 | $2.80 | $46,667.60 |
DisclosureSEC source: 0002070849-26-000072 · wk-form4_1792015801.xml · nonDerivative · entry 1 Atay Oguzhan · CIK 0002088549 · Director · Chairman and CEO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 16,667 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 June 5, 2026. Read SEC document |
| September 28, 2026 Filed Oct 1, 2026 00:33 UTC | BillionToOne, Inc. BLLN · Entity 3992 | Exercise / conversionStock Option (right to buy) · Derivative | 8,333 | $2.80 Strike: $2.80 | $23,332.40 |
DisclosureSEC source: 0002088549-26-000012 · wk-form4_1790814780.xml · derivative · entry 4 Atay Oguzhan · CIK 0002088549 · Director · Chairman and CEO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 493,629 Underlying: Class A Common Stock · 8,333 shares Expires 2031-06-07 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. F4 · derivative.exercise_date: The options are fully vested and exercisable. Read SEC document |
| September 28, 2026 Filed Oct 1, 2026 00:33 UTC | BillionToOne, Inc. BLLN · Entity 3992 | SaleClass A Common Stock | 2,666 | $120.64 | $321,626.24 |
DisclosureSEC source: 0002088549-26-000012 · wk-form4_1790814780.xml · nonDerivative · entry 3 Atay Oguzhan · CIK 0002088549 · Director · Chairman and CEO 10b5-1 filing: Plan reported Ownership: Indirect · By spouse Disclosed balance after: 154,502 F2 · kind: The transactions reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person's spouse on June 7, 2026. F3 · ownership.nature: Represents shares held by the Reporting Person's spouse. Read SEC document |
| September 28, 2026 Filed Oct 1, 2026 00:33 UTC | BillionToOne, Inc. BLLN · Entity 3992 | SaleClass A Common Stock | 8,333 | $120.64 | $1,005,293.12 |
DisclosureSEC source: 0002088549-26-000012 · wk-form4_1790814780.xml · nonDerivative · entry 2 Atay Oguzhan · CIK 0002088549 · Director · Chairman and CEO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 0 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 June 5, 2026. Read SEC document |
| September 28, 2026 Filed Oct 1, 2026 00:33 UTC | BillionToOne, Inc. BLLN · Entity 3992 | Exercise / conversionClass A Common Stock | 8,333 | $2.80 | $23,332.40 |
DisclosureSEC source: 0002088549-26-000012 · wk-form4_1790814780.xml · nonDerivative · entry 1 Atay Oguzhan · CIK 0002088549 · Director · Chairman and CEO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 8,333 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 June 5, 2026. Read SEC document |
| September 14, 2026 Filed Sep 16, 2026 22:43 UTC | BillionToOne, Inc. BLLN · Entity 3992 | Exercise / conversionStock Option (right to buy) · Derivative | 8,333 | $2.80 Strike: $2.80 | $23,332.40 |
DisclosureSEC source: 0002088549-26-000010 · wk-form4_1789598628.xml · derivative · entry 14 Atay Oguzhan · CIK 0002088549 · Director · Chairman and CEO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 501,962 Underlying: Class A Common Stock · 8,333 shares Expires 2031-06-07 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. F12 · derivative.exercise_date: The options are fully vested and exercisable. Read SEC document |
| September 14, 2026 Filed Sep 16, 2026 22:43 UTC | BillionToOne, Inc. BLLN · Entity 3992 | Exercise / conversionStock Option (right to buy) · Derivative | 16,666 | $2.80 Strike: $2.80 | $46,664.80 |
DisclosureSEC source: 0002088549-26-000010 · wk-form4_1789598628.xml · derivative · entry 13 Atay Oguzhan · CIK 0002088549 · Director · Chairman and CEO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 510,295 Underlying: Class A Common Stock · 16,666 shares Expires 2031-06-07 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. F12 · derivative.exercise_date: The options are fully vested and exercisable. Read SEC document |
| September 14, 2026 Filed Sep 16, 2026 22:43 UTC | BillionToOne, Inc. BLLN · Entity 3992 | SaleClass A Common Stock | 2,666 | $98.00 | $261,268.00 |
DisclosureSEC source: 0002088549-26-000010 · wk-form4_1789598628.xml · nonDerivative · entry 12 Atay Oguzhan · CIK 0002088549 · Director · Chairman and CEO 10b5-1 filing: Plan reported Ownership: Indirect · By spouse Disclosed balance after: 157,168 F10 · kind: The transactions reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person's spouse on June 7, 2026. F11 · ownership.nature: Represents shares held by the Reporting Person's spouse. Read SEC document |
| September 14, 2026 Filed Sep 16, 2026 22:43 UTC | BillionToOne, Inc. BLLN · Entity 3992 | SaleClass A Common Stock | 2,666 | $98.00 | $261,268.00 |
DisclosureSEC source: 0002088549-26-000010 · wk-form4_1789598628.xml · nonDerivative · entry 11 Atay Oguzhan · CIK 0002088549 · Director · Chairman and CEO 10b5-1 filing: Plan reported Ownership: Indirect · By spouse Disclosed balance after: 159,834 F10 · kind: The transactions reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person's spouse on June 7, 2026. F11 · ownership.nature: Represents shares held by the Reporting Person's spouse. Read SEC document |
| September 14, 2026 Filed Sep 16, 2026 22:43 UTC | BillionToOne, Inc. BLLN · Entity 3992 | SaleClass A Common Stock | 3,143 | $101.49 | $318,989.04 |
DisclosureSEC source: 0002088549-26-000010 · wk-form4_1789598628.xml · nonDerivative · entry 10 Atay Oguzhan · CIK 0002088549 · Director · Chairman and CEO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 0 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 June 5, 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 $101.250 to $101.820 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 |
| September 14, 2026 Filed Sep 16, 2026 22:43 UTC | BillionToOne, Inc. BLLN · Entity 3992 | SaleClass A Common Stock | 2,010 | $100.78 | $202,558.96 |
DisclosureSEC source: 0002088549-26-000010 · wk-form4_1789598628.xml · nonDerivative · entry 9 Atay Oguzhan · CIK 0002088549 · Director · Chairman and CEO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 3,143 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 June 5, 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 $100.230 to $101.200 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 |
| September 14, 2026 Filed Sep 16, 2026 22:43 UTC | BillionToOne, Inc. BLLN · Entity 3992 | SaleClass A Common Stock | 1,500 | $99.57 | $149,352.45 |
DisclosureSEC source: 0002088549-26-000010 · wk-form4_1789598628.xml · nonDerivative · entry 8 Atay Oguzhan · CIK 0002088549 · Director · Chairman and CEO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 5,153 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 June 5, 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 $99.160 to $100.130 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 |
| September 14, 2026 Filed Sep 16, 2026 22:43 UTC | BillionToOne, Inc. BLLN · Entity 3992 | SaleClass A Common Stock | 1,680 | $98.64 | $165,708.14 |
DisclosureSEC source: 0002088549-26-000010 · wk-form4_1789598628.xml · nonDerivative · entry 7 Atay Oguzhan · CIK 0002088549 · Director · Chairman and CEO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 6,653 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 June 5, 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 $98.140 to $99.010 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 |
| September 14, 2026 Filed Sep 16, 2026 22:43 UTC | BillionToOne, Inc. BLLN · Entity 3992 | SaleClass A Common Stock | 7,214 | $101.44 | $731,793.21 |
DisclosureSEC source: 0002088549-26-000010 · wk-form4_1789598628.xml · nonDerivative · entry 6 Atay Oguzhan · CIK 0002088549 · Director · Chairman and CEO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 8,333 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 June 5, 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 $101.085 to $101.805 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 |
| September 14, 2026 Filed Sep 16, 2026 22:43 UTC | BillionToOne, Inc. BLLN · Entity 3992 | SaleClass A Common Stock | 2,531 | $100.58 | $254,570.26 |
DisclosureSEC source: 0002088549-26-000010 · wk-form4_1789598628.xml · nonDerivative · entry 5 Atay Oguzhan · CIK 0002088549 · Director · Chairman and CEO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 15,547 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 June 5, 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 $100.060 to $101.040 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 |
| September 14, 2026 Filed Sep 16, 2026 22:43 UTC | BillionToOne, Inc. BLLN · Entity 3992 | SaleClass A Common Stock | 2,456 | $99.57 | $244,547.11 |
DisclosureSEC source: 0002088549-26-000010 · wk-form4_1789598628.xml · nonDerivative · entry 4 Atay Oguzhan · CIK 0002088549 · Director · Chairman and CEO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 18,078 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 June 5, 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 $99.060 to $100.055 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 |
| September 14, 2026 Filed Sep 16, 2026 22:43 UTC | BillionToOne, Inc. BLLN · Entity 3992 | SaleClass A Common Stock | 4,465 | $98.63 | $440,389.20 |
DisclosureSEC source: 0002088549-26-000010 · wk-form4_1789598628.xml · nonDerivative · entry 3 Atay Oguzhan · CIK 0002088549 · Director · Chairman and CEO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 20,534 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 June 5, 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 $98.060 to $99.055 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 |
| September 14, 2026 Filed Sep 16, 2026 22:43 UTC | BillionToOne, Inc. BLLN · Entity 3992 | Exercise / conversionClass A Common Stock | 8,333 | $2.80 | $23,332.40 |
DisclosureSEC source: 0002088549-26-000010 · wk-form4_1789598628.xml · nonDerivative · entry 2 Atay Oguzhan · CIK 0002088549 · Director · Chairman and CEO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 24,999 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 June 5, 2026. Read SEC document |
| September 14, 2026 Filed Sep 16, 2026 22:43 UTC | BillionToOne, Inc. BLLN · Entity 3992 | Exercise / conversionClass A Common Stock | 16,666 | $2.80 | $46,664.80 |
DisclosureSEC source: 0002088549-26-000010 · wk-form4_1789598628.xml · nonDerivative · entry 1 Atay Oguzhan · CIK 0002088549 · Director · Chairman and CEO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 16,666 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 June 5, 2026. Read SEC document |
| September 09, 2026 Filed Sep 10, 2026 23:44 UTC | BillionToOne, Inc. BLLN · Entity 3992 | GiftClass A Common Stock | 20,000 | $0.00 | $0.00 |
DisclosureSEC source: 0002070849-26-000066 · wk-form4_1789083859.xml · nonDerivative · entry 2 Atay Oguzhan · CIK 0002088549 · Director · Chairman and CEO 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 0 Read SEC document |
| September 08, 2026 Filed Sep 10, 2026 23:44 UTC | BillionToOne, Inc. BLLN · Entity 3992 | ConversionClass B Common Stock · Derivative | 20,000 | $0.00 | $0.00 |
DisclosureSEC source: 0002070849-26-000066 · wk-form4_1789083859.xml · derivative · entry 3 Atay Oguzhan · CIK 0002088549 · Director · Chairman and CEO 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 2,197,542 Underlying: Class A Common Stock · 20,000 shares Expires not disclosed 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 · derivative.exercise_price: These shares of Class B common stock were converted at a 1:1 ratio for shares of Class A common stock at the option of the holder. F2 · 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. F1 · price: These shares of Class B common stock were converted at a 1:1 ratio for shares of Class A common stock at the option of the holder. F2 · 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. F2 · 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 |
| September 08, 2026 Filed Sep 10, 2026 23:44 UTC | BillionToOne, Inc. BLLN · Entity 3992 | ConversionClass A Common Stock | 20,000 | $0.00 | $0.00 |
DisclosureSEC source: 0002070849-26-000066 · wk-form4_1789083859.xml · nonDerivative · entry 1 Atay Oguzhan · CIK 0002088549 · Director · Chairman and CEO 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 20,000 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: These shares of Class B common stock were converted at a 1:1 ratio for shares of Class A common stock at the option of the holder. F1 · price: These shares of Class B common stock were converted at a 1:1 ratio for shares of Class A common stock at the option of the holder. Read SEC document |
| August 05, 2026 Filed Aug 7, 2026 20:02 UTC | BillionToOne, Inc. BLLN · Entity 3992 | Exercise / conversionStock Option (right to buy) · Derivative | 15,539 | $2.80 Strike: $2.80 | $43,509.20 |
DisclosureSEC source: 0002088549-26-000007 · wk-form4_1786132943.xml · derivative · entry 3 Atay Oguzhan · CIK 0002088549 · Director · Chairman and CEO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 526,961 Underlying: Class A Common Stock · 15,539 shares Expires 2031-06-07 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. F3 · derivative.exercise_date: The options are fully vested and exercisable. Read SEC document |
| August 05, 2026 Filed Aug 7, 2026 20:02 UTC | BillionToOne, Inc. BLLN · Entity 3992 | SaleClass A Common Stock | 15,539 | $150.03 | $2,331,351.91 |
DisclosureSEC source: 0002088549-26-000007 · wk-form4_1786132943.xml · nonDerivative · entry 2 Atay Oguzhan · CIK 0002088549 · Director · Chairman and CEO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 0 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 $150.000 to $150.260 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 |
| August 05, 2026 Filed Aug 7, 2026 20:02 UTC | BillionToOne, Inc. BLLN · Entity 3992 | Exercise / conversionClass A Common Stock | 15,539 | $2.80 | $43,509.20 |
DisclosureSEC source: 0002088549-26-000007 · wk-form4_1786132943.xml · nonDerivative · entry 1 Atay Oguzhan · CIK 0002088549 · Director · Chairman and CEO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 15,539 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. Read SEC document |
| August 03, 2026 Filed Aug 6, 2026 00:52 UTC | BillionToOne, Inc. BLLN · Entity 3992 | Exercise / conversionStock Option (right to buy) · Derivative | 6,250 | $2.80 Strike: $2.80 | $17,500.00 |
DisclosureSEC source: 0002070849-26-000052 · wk-form4_1785977563.xml · derivative · entry 29 Atay Oguzhan · CIK 0002088549 · Director · Chairman and CEO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 542,500 Underlying: Class A Common Stock · 6,250 shares Expires 2031-06-07 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. F10 · derivative.exercise_date: The options are fully vested and exercisable. Read SEC document |
| August 03, 2026 Filed Aug 6, 2026 00:52 UTC | BillionToOne, Inc. BLLN · Entity 3992 | Exercise / conversionStock Option (right to buy) · Derivative | 6,250 | $2.80 Strike: $2.80 | $17,500.00 |
DisclosureSEC source: 0002070849-26-000052 · wk-form4_1785977563.xml · derivative · entry 28 Atay Oguzhan · CIK 0002088549 · Director · Chairman and CEO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 548,750 Underlying: Class A Common Stock · 6,250 shares Expires 2031-06-07 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. F10 · derivative.exercise_date: The options are fully vested and exercisable. Read SEC document |
| August 03, 2026 Filed Aug 6, 2026 00:52 UTC | BillionToOne, Inc. BLLN · Entity 3992 | Exercise / conversionStock Option (right to buy) · Derivative | 20,000 | $2.80 Strike: $2.80 | $56,000.00 |
DisclosureSEC source: 0002070849-26-000052 · wk-form4_1785977563.xml · derivative · entry 27 Atay Oguzhan · CIK 0002088549 · Director · Chairman and CEO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 555,000 Underlying: Class A Common Stock · 20,000 shares Expires 2031-06-07 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. F10 · derivative.exercise_date: The options are fully vested and exercisable. Read SEC document |
| August 03, 2026 Filed Aug 6, 2026 00:52 UTC | BillionToOne, Inc. BLLN · Entity 3992 | SaleClass A Common Stock | 6,250 | $137.37 | $858,562.50 |
DisclosureSEC source: 0002070849-26-000052 · wk-form4_1785977563.xml · nonDerivative · entry 26 Atay Oguzhan · CIK 0002088549 · Director · Chairman and CEO 10b5-1 filing: Plan reported Ownership: Indirect · By spouse Disclosed balance after: 162,500 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 · ownership.nature: Represents shares held by the Reporting Person's spouse. Read SEC document |
| August 03, 2026 Filed Aug 6, 2026 00:52 UTC | BillionToOne, Inc. BLLN · Entity 3992 | SaleClass A Common Stock | 6,250 | $137.37 | $858,562.50 |
DisclosureSEC source: 0002070849-26-000052 · wk-form4_1785977563.xml · nonDerivative · entry 25 Atay Oguzhan · CIK 0002088549 · Director · Chairman and CEO 10b5-1 filing: Plan reported Ownership: Indirect · By spouse Disclosed balance after: 168,750 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 · ownership.nature: Represents shares held by the Reporting Person's spouse. Read SEC document |
| August 03, 2026 Filed Aug 6, 2026 00:52 UTC | BillionToOne, Inc. BLLN · Entity 3992 | SaleClass A Common Stock | 82 | $139.20 | $11,414.74 |
DisclosureSEC source: 0002070849-26-000052 · wk-form4_1785977563.xml · nonDerivative · entry 24 Atay Oguzhan · CIK 0002088549 · Director · Chairman and CEO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 0 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 $138.890 to $139.500 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. Read SEC document |
| August 03, 2026 Filed Aug 6, 2026 00:52 UTC | BillionToOne, Inc. BLLN · Entity 3992 | SaleClass A Common Stock | 760 | $138.09 | $104,948.48 |
DisclosureSEC source: 0002070849-26-000052 · wk-form4_1785977563.xml · nonDerivative · entry 23 Atay Oguzhan · CIK 0002088549 · Director · Chairman and CEO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 82 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 $137.750 to $138.740 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 |
| August 03, 2026 Filed Aug 6, 2026 00:52 UTC | BillionToOne, Inc. BLLN · Entity 3992 | SaleClass A Common Stock | 3,125 | $137.25 | $428,892.81 |
DisclosureSEC source: 0002070849-26-000052 · wk-form4_1785977563.xml · nonDerivative · entry 22 Atay Oguzhan · CIK 0002088549 · Director · Chairman and CEO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 842 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 $136.750 to $137.740 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 |
| August 03, 2026 Filed Aug 6, 2026 00:52 UTC | BillionToOne, Inc. BLLN · Entity 3992 | SaleClass A Common Stock | 1,983 | $136.42 | $270,528.79 |
DisclosureSEC source: 0002070849-26-000052 · wk-form4_1785977563.xml · nonDerivative · entry 21 Atay Oguzhan · CIK 0002088549 · Director · Chairman and CEO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 3,967 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 $135.745 to $136.740 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 |
| August 03, 2026 Filed Aug 6, 2026 00:52 UTC | BillionToOne, Inc. BLLN · Entity 3992 | SaleClass A Common Stock | 43 | $135.41 | $5,822.58 |
DisclosureSEC source: 0002070849-26-000052 · wk-form4_1785977563.xml · nonDerivative · entry 20 Atay Oguzhan · CIK 0002088549 · Director · Chairman and CEO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 5,950 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 $134.6675 to $135.650 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 |
| August 03, 2026 Filed Aug 6, 2026 00:52 UTC | BillionToOne, Inc. BLLN · Entity 3992 | SaleClass A Common Stock | 173 | $133.81 | $23,148.71 |
DisclosureSEC source: 0002070849-26-000052 · wk-form4_1785977563.xml · nonDerivative · entry 19 Atay Oguzhan · CIK 0002088549 · Director · Chairman and CEO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 5,993 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 $133.510 to $133.9525 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 |
| August 03, 2026 Filed Aug 6, 2026 00:52 UTC | BillionToOne, Inc. BLLN · Entity 3992 | SaleClass A Common Stock | 84 | $133.01 | $11,172.81 |
DisclosureSEC source: 0002070849-26-000052 · wk-form4_1785977563.xml · nonDerivative · entry 18 Atay Oguzhan · CIK 0002088549 · Director · Chairman and CEO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 6,166 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 $132.500 to $133.470 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 |
| August 03, 2026 Filed Aug 6, 2026 00:52 UTC | BillionToOne, Inc. BLLN · Entity 3992 | SaleClass A Common Stock | 82 | $139.21 | $11,415.14 |
DisclosureSEC source: 0002070849-26-000052 · wk-form4_1785977563.xml · nonDerivative · entry 17 Atay Oguzhan · CIK 0002088549 · Director · Chairman and CEO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 6,250 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 $138.890 to $139.500 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. Read SEC document |
| August 03, 2026 Filed Aug 6, 2026 00:52 UTC | BillionToOne, Inc. BLLN · Entity 3992 | SaleClass A Common Stock | 762 | $138.09 | $105,224.35 |
DisclosureSEC source: 0002070849-26-000052 · wk-form4_1785977563.xml · nonDerivative · entry 16 Atay Oguzhan · CIK 0002088549 · Director · Chairman and CEO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 6,332 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 $137.750 to $138.740 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 |
| August 03, 2026 Filed Aug 6, 2026 00:52 UTC | BillionToOne, Inc. BLLN · Entity 3992 | SaleClass A Common Stock | 3,124 | $137.25 | $428,754.32 |
DisclosureSEC source: 0002070849-26-000052 · wk-form4_1785977563.xml · nonDerivative · entry 15 Atay Oguzhan · CIK 0002088549 · Director · Chairman and CEO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 7,094 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 $136.750 to $137.740 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 |
| August 03, 2026 Filed Aug 6, 2026 00:52 UTC | BillionToOne, Inc. BLLN · Entity 3992 | SaleClass A Common Stock | 1,981 | $136.42 | $270,257.13 |
DisclosureSEC source: 0002070849-26-000052 · wk-form4_1785977563.xml · nonDerivative · entry 14 Atay Oguzhan · CIK 0002088549 · Director · Chairman and CEO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 10,218 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 $135.745 to $136.740 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 |
| August 03, 2026 Filed Aug 6, 2026 00:52 UTC | BillionToOne, Inc. BLLN · Entity 3992 | SaleClass A Common Stock | 44 | $135.41 | $5,958.14 |
DisclosureSEC source: 0002070849-26-000052 · wk-form4_1785977563.xml · nonDerivative · entry 13 Atay Oguzhan · CIK 0002088549 · Director · Chairman and CEO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 12,199 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 $134.6675 to $135.650 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 |
| August 03, 2026 Filed Aug 6, 2026 00:52 UTC | BillionToOne, Inc. BLLN · Entity 3992 | SaleClass A Common Stock | 173 | $133.81 | $23,148.71 |
DisclosureSEC source: 0002070849-26-000052 · wk-form4_1785977563.xml · nonDerivative · entry 12 Atay Oguzhan · CIK 0002088549 · Director · Chairman and CEO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 12,243 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 $133.510 to $133.9525 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 |
Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.