organization · Reporting owner
Hummingbird Opportunity Fund II CommV
Disclosed activity across 1 company
Sign in to followReported relationships
Latest disclosed role at each company.
| Company | Last reported as | Report date | Published |
|---|---|---|---|
| BillionToOne, Inc.BLLN · Entity 3992 | 10% owner | November 07, 2025 | January 21, 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 November 07, 2025 · Filed January 21, 2026
Jointly reported with Humming Bird Ventures Management NV, Hummingbird Ventures III CommV, Hummingbird Dragons CommV, Hummingbird Collective CommV, HB&Q NV (HB&Q COMPARTMENT III), Van den Brande Barend, Decoster Lukas
| Security / award | Ownership account | Disclosed shares / units | Disclosure context |
|---|---|---|---|
| Common StockSEC Table I · non-derivative | IndirectSee Footnotes | 640,727 |
Reported balance
After 2025-11-07 transaction · row 1
Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source rowRow 1 · 2025-11-07 · Conversion · Acquired 640,727 · Balance 640,727 F1: The total represents shares received upon conversion of shares of Series A-1 Convertible Preferred Stock, Series A-2 Convertible Preferred Stock, Series A-6 Convertible Preferred Stock, Series B-1 Convertible Preferred Stock, Series B-2 Convertible Preferred Stock, Series C Convertible Preferred Stock and/or Series D Convertible Preferred Stock. F2: The reported security converted into the Issuer's Common Stock on a one-for-one basis automatically immediately prior to the closing of the Issuer's initial public offering of Class A common stock (the "Offering") without payment of further consideration. The shares have no expiration date. F3: The reported security is directly held by HB&Q NV (HB&Q COMPARTMENT III). F8: Humming Bird Ventures Management NV is the managing member of Hummingbird Opportunity Fund II CommV, Hummingbird Ventures III CommV, Hummingbird Dragons CommV, Hummingbird Collective CommV, and HB&Q NV (HB&Q COMPARTMENT III) (the Hummingbird Funds) and, as a result, may be deemed to beneficially own shares held by the Hummingbird Funds. Mr. Ileri, Barend Van den Brande, and Lukas Decoster are partners of Hummingbird Ventures Management NV and may be deemed to have shared voting and investment power over the shares held by the Hummingbird Funds. The Reporting Persons disclaim beneficial ownership of these shares except to the extent of their pecuniary interests therein. |
| Common StockSEC Table I · non-derivative | IndirectSee Footnotes | 18,845 |
Reported balance
After 2025-11-07 transaction · row 2
Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source rowRow 2 · 2025-11-07 · Conversion · Acquired 18,845 · Balance 18,845 F1: The total represents shares received upon conversion of shares of Series A-1 Convertible Preferred Stock, Series A-2 Convertible Preferred Stock, Series A-6 Convertible Preferred Stock, Series B-1 Convertible Preferred Stock, Series B-2 Convertible Preferred Stock, Series C Convertible Preferred Stock and/or Series D Convertible Preferred Stock. F2: The reported security converted into the Issuer's Common Stock on a one-for-one basis automatically immediately prior to the closing of the Issuer's initial public offering of Class A common stock (the "Offering") without payment of further consideration. The shares have no expiration date. F4: The reported security is directly held by Hummingbird Collective CommV. F8: Humming Bird Ventures Management NV is the managing member of Hummingbird Opportunity Fund II CommV, Hummingbird Ventures III CommV, Hummingbird Dragons CommV, Hummingbird Collective CommV, and HB&Q NV (HB&Q COMPARTMENT III) (the Hummingbird Funds) and, as a result, may be deemed to beneficially own shares held by the Hummingbird Funds. Mr. Ileri, Barend Van den Brande, and Lukas Decoster are partners of Hummingbird Ventures Management NV and may be deemed to have shared voting and investment power over the shares held by the Hummingbird Funds. The Reporting Persons disclaim beneficial ownership of these shares except to the extent of their pecuniary interests therein. |
| Common StockSEC Table I · non-derivative | IndirectSee Footnotes | 2,015,118 |
Reported balance
After 2025-11-07 transaction · row 3
Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source rowRow 3 · 2025-11-07 · Conversion · Acquired 2,015,118 · Balance 2,015,118 F1: The total represents shares received upon conversion of shares of Series A-1 Convertible Preferred Stock, Series A-2 Convertible Preferred Stock, Series A-6 Convertible Preferred Stock, Series B-1 Convertible Preferred Stock, Series B-2 Convertible Preferred Stock, Series C Convertible Preferred Stock and/or Series D Convertible Preferred Stock. F2: The reported security converted into the Issuer's Common Stock on a one-for-one basis automatically immediately prior to the closing of the Issuer's initial public offering of Class A common stock (the "Offering") without payment of further consideration. The shares have no expiration date. F5: The reported security is directly held by Hummingbird Dragons CommV. F8: Humming Bird Ventures Management NV is the managing member of Hummingbird Opportunity Fund II CommV, Hummingbird Ventures III CommV, Hummingbird Dragons CommV, Hummingbird Collective CommV, and HB&Q NV (HB&Q COMPARTMENT III) (the Hummingbird Funds) and, as a result, may be deemed to beneficially own shares held by the Hummingbird Funds. Mr. Ileri, Barend Van den Brande, and Lukas Decoster are partners of Hummingbird Ventures Management NV and may be deemed to have shared voting and investment power over the shares held by the Hummingbird Funds. The Reporting Persons disclaim beneficial ownership of these shares except to the extent of their pecuniary interests therein. |
| Common StockSEC Table I · non-derivative | IndirectSee Footnotes | 2,631,664 |
Reported balance
After 2025-11-07 transaction · row 4
Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source rowRow 4 · 2025-11-07 · Conversion · Acquired 2,451,665 · Balance 2,631,664 F1: The total represents shares received upon conversion of shares of Series A-1 Convertible Preferred Stock, Series A-2 Convertible Preferred Stock, Series A-6 Convertible Preferred Stock, Series B-1 Convertible Preferred Stock, Series B-2 Convertible Preferred Stock, Series C Convertible Preferred Stock and/or Series D Convertible Preferred Stock. F2: The reported security converted into the Issuer's Common Stock on a one-for-one basis automatically immediately prior to the closing of the Issuer's initial public offering of Class A common stock (the "Offering") without payment of further consideration. The shares have no expiration date. F6: The reported security is directly held by Hummingbird Opportunity Fund II CommV. F8: Humming Bird Ventures Management NV is the managing member of Hummingbird Opportunity Fund II CommV, Hummingbird Ventures III CommV, Hummingbird Dragons CommV, Hummingbird Collective CommV, and HB&Q NV (HB&Q COMPARTMENT III) (the Hummingbird Funds) and, as a result, may be deemed to beneficially own shares held by the Hummingbird Funds. Mr. Ileri, Barend Van den Brande, and Lukas Decoster are partners of Hummingbird Ventures Management NV and may be deemed to have shared voting and investment power over the shares held by the Hummingbird Funds. The Reporting Persons disclaim beneficial ownership of these shares except to the extent of their pecuniary interests therein. |
| Common StockSEC Table I · non-derivative | IndirectSee Footnotes | 2,580,833 |
Reported balance
After 2025-11-07 transaction · row 5
Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source rowRow 5 · 2025-11-07 · Conversion · Acquired 2,580,833 · Balance 2,580,833 F1: The total represents shares received upon conversion of shares of Series A-1 Convertible Preferred Stock, Series A-2 Convertible Preferred Stock, Series A-6 Convertible Preferred Stock, Series B-1 Convertible Preferred Stock, Series B-2 Convertible Preferred Stock, Series C Convertible Preferred Stock and/or Series D Convertible Preferred Stock. F2: The reported security converted into the Issuer's Common Stock on a one-for-one basis automatically immediately prior to the closing of the Issuer's initial public offering of Class A common stock (the "Offering") without payment of further consideration. The shares have no expiration date. F7: The reported security is directly held by Hummingbird Ventures III CommV. F8: Humming Bird Ventures Management NV is the managing member of Hummingbird Opportunity Fund II CommV, Hummingbird Ventures III CommV, Hummingbird Dragons CommV, Hummingbird Collective CommV, and HB&Q NV (HB&Q COMPARTMENT III) (the Hummingbird Funds) and, as a result, may be deemed to beneficially own shares held by the Hummingbird Funds. Mr. Ileri, Barend Van den Brande, and Lukas Decoster are partners of Hummingbird Ventures Management NV and may be deemed to have shared voting and investment power over the shares held by the Hummingbird Funds. The Reporting Persons disclaim beneficial ownership of these shares except to the extent of their pecuniary interests therein. |
| Common StockSEC Table I · non-derivative | IndirectSee Footnotes | 0 |
Reported balance
After 2025-11-07 transaction · row 6
Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source rowRow 6 · 2025-11-07 · Other · Disposed 640,727 · Balance 0 F9: 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 Offering. F3: The reported security is directly held by HB&Q NV (HB&Q COMPARTMENT III). F8: Humming Bird Ventures Management NV is the managing member of Hummingbird Opportunity Fund II CommV, Hummingbird Ventures III CommV, Hummingbird Dragons CommV, Hummingbird Collective CommV, and HB&Q NV (HB&Q COMPARTMENT III) (the Hummingbird Funds) and, as a result, may be deemed to beneficially own shares held by the Hummingbird Funds. Mr. Ileri, Barend Van den Brande, and Lukas Decoster are partners of Hummingbird Ventures Management NV and may be deemed to have shared voting and investment power over the shares held by the Hummingbird Funds. The Reporting Persons disclaim beneficial ownership of these shares except to the extent of their pecuniary interests therein. |
| Common StockSEC Table I · non-derivative | IndirectSee Footnotes | 0 |
Reported balance
After 2025-11-07 transaction · row 7
Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source rowRow 7 · 2025-11-07 · Other · Disposed 18,845 · Balance 0 F9: 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 Offering. F4: The reported security is directly held by Hummingbird Collective CommV. F8: Humming Bird Ventures Management NV is the managing member of Hummingbird Opportunity Fund II CommV, Hummingbird Ventures III CommV, Hummingbird Dragons CommV, Hummingbird Collective CommV, and HB&Q NV (HB&Q COMPARTMENT III) (the Hummingbird Funds) and, as a result, may be deemed to beneficially own shares held by the Hummingbird Funds. Mr. Ileri, Barend Van den Brande, and Lukas Decoster are partners of Hummingbird Ventures Management NV and may be deemed to have shared voting and investment power over the shares held by the Hummingbird Funds. The Reporting Persons disclaim beneficial ownership of these shares except to the extent of their pecuniary interests therein. |
| Common StockSEC Table I · non-derivative | IndirectSee Footnotes | 0 |
Reported balance
After 2025-11-07 transaction · row 8
Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source rowRow 8 · 2025-11-07 · Other · Disposed 2,015,118 · Balance 0 F9: 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 Offering. F5: The reported security is directly held by Hummingbird Dragons CommV. F8: Humming Bird Ventures Management NV is the managing member of Hummingbird Opportunity Fund II CommV, Hummingbird Ventures III CommV, Hummingbird Dragons CommV, Hummingbird Collective CommV, and HB&Q NV (HB&Q COMPARTMENT III) (the Hummingbird Funds) and, as a result, may be deemed to beneficially own shares held by the Hummingbird Funds. Mr. Ileri, Barend Van den Brande, and Lukas Decoster are partners of Hummingbird Ventures Management NV and may be deemed to have shared voting and investment power over the shares held by the Hummingbird Funds. The Reporting Persons disclaim beneficial ownership of these shares except to the extent of their pecuniary interests therein. |
| Common StockSEC Table I · non-derivative | IndirectSee Footnotes | 0 |
Reported balance
After 2025-11-07 transaction · row 9
Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source rowRow 9 · 2025-11-07 · Other · Disposed 2,631,664 · Balance 0 F9: 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 Offering. F6: The reported security is directly held by Hummingbird Opportunity Fund II CommV. F8: Humming Bird Ventures Management NV is the managing member of Hummingbird Opportunity Fund II CommV, Hummingbird Ventures III CommV, Hummingbird Dragons CommV, Hummingbird Collective CommV, and HB&Q NV (HB&Q COMPARTMENT III) (the Hummingbird Funds) and, as a result, may be deemed to beneficially own shares held by the Hummingbird Funds. Mr. Ileri, Barend Van den Brande, and Lukas Decoster are partners of Hummingbird Ventures Management NV and may be deemed to have shared voting and investment power over the shares held by the Hummingbird Funds. The Reporting Persons disclaim beneficial ownership of these shares except to the extent of their pecuniary interests therein. |
| Common StockSEC Table I · non-derivative | IndirectSee Footnotes | 0 |
Reported balance
After 2025-11-07 transaction · row 10
Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source rowRow 10 · 2025-11-07 · Other · Disposed 2,580,833 · Balance 0 F9: 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 Offering. F7: The reported security is directly held by Hummingbird Ventures III CommV. F8: Humming Bird Ventures Management NV is the managing member of Hummingbird Opportunity Fund II CommV, Hummingbird Ventures III CommV, Hummingbird Dragons CommV, Hummingbird Collective CommV, and HB&Q NV (HB&Q COMPARTMENT III) (the Hummingbird Funds) and, as a result, may be deemed to beneficially own shares held by the Hummingbird Funds. Mr. Ileri, Barend Van den Brande, and Lukas Decoster are partners of Hummingbird Ventures Management NV and may be deemed to have shared voting and investment power over the shares held by the Hummingbird Funds. The Reporting Persons disclaim beneficial ownership of these shares except to the extent of their pecuniary interests therein. |
| Class A Common StockSEC Table I · non-derivative | IndirectSee Footnotes | 640,727 |
Reported balance
After 2025-11-07 transaction · row 11
Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source rowRow 11 · 2025-11-07 · Other · Acquired 640,727 · Balance 640,727 F9: 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 Offering. F3: The reported security is directly held by HB&Q NV (HB&Q COMPARTMENT III). F8: Humming Bird Ventures Management NV is the managing member of Hummingbird Opportunity Fund II CommV, Hummingbird Ventures III CommV, Hummingbird Dragons CommV, Hummingbird Collective CommV, and HB&Q NV (HB&Q COMPARTMENT III) (the Hummingbird Funds) and, as a result, may be deemed to beneficially own shares held by the Hummingbird Funds. Mr. Ileri, Barend Van den Brande, and Lukas Decoster are partners of Hummingbird Ventures Management NV and may be deemed to have shared voting and investment power over the shares held by the Hummingbird Funds. The Reporting Persons disclaim beneficial ownership of these shares except to the extent of their pecuniary interests therein. |
| Class A Common StockSEC Table I · non-derivative | IndirectSee Footnotes | 18,845 |
Reported balance
After 2025-11-07 transaction · row 12
Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source rowRow 12 · 2025-11-07 · Other · Acquired 18,845 · Balance 18,845 F9: 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 Offering. F4: The reported security is directly held by Hummingbird Collective CommV. F8: Humming Bird Ventures Management NV is the managing member of Hummingbird Opportunity Fund II CommV, Hummingbird Ventures III CommV, Hummingbird Dragons CommV, Hummingbird Collective CommV, and HB&Q NV (HB&Q COMPARTMENT III) (the Hummingbird Funds) and, as a result, may be deemed to beneficially own shares held by the Hummingbird Funds. Mr. Ileri, Barend Van den Brande, and Lukas Decoster are partners of Hummingbird Ventures Management NV and may be deemed to have shared voting and investment power over the shares held by the Hummingbird Funds. The Reporting Persons disclaim beneficial ownership of these shares except to the extent of their pecuniary interests therein. |
| Class A Common StockSEC Table I · non-derivative | IndirectSee Footnotes | 2,015,118 |
Reported balance
After 2025-11-07 transaction · row 13
Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source rowRow 13 · 2025-11-07 · Other · Acquired 2,015,118 · Balance 2,015,118 F9: 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 Offering. F5: The reported security is directly held by Hummingbird Dragons CommV. F8: Humming Bird Ventures Management NV is the managing member of Hummingbird Opportunity Fund II CommV, Hummingbird Ventures III CommV, Hummingbird Dragons CommV, Hummingbird Collective CommV, and HB&Q NV (HB&Q COMPARTMENT III) (the Hummingbird Funds) and, as a result, may be deemed to beneficially own shares held by the Hummingbird Funds. Mr. Ileri, Barend Van den Brande, and Lukas Decoster are partners of Hummingbird Ventures Management NV and may be deemed to have shared voting and investment power over the shares held by the Hummingbird Funds. The Reporting Persons disclaim beneficial ownership of these shares except to the extent of their pecuniary interests therein. |
| Class A Common StockSEC Table I · non-derivative | IndirectSee Footnotes | 2,631,664 |
Reported balance
After 2025-11-07 transaction · row 14
Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source rowRow 14 · 2025-11-07 · Other · Acquired 2,631,664 · Balance 2,631,664 F9: 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 Offering. F6: The reported security is directly held by Hummingbird Opportunity Fund II CommV. F8: Humming Bird Ventures Management NV is the managing member of Hummingbird Opportunity Fund II CommV, Hummingbird Ventures III CommV, Hummingbird Dragons CommV, Hummingbird Collective CommV, and HB&Q NV (HB&Q COMPARTMENT III) (the Hummingbird Funds) and, as a result, may be deemed to beneficially own shares held by the Hummingbird Funds. Mr. Ileri, Barend Van den Brande, and Lukas Decoster are partners of Hummingbird Ventures Management NV and may be deemed to have shared voting and investment power over the shares held by the Hummingbird Funds. The Reporting Persons disclaim beneficial ownership of these shares except to the extent of their pecuniary interests therein. |
| Class A Common StockSEC Table I · non-derivative | IndirectSee Footnotes | 2,580,833 |
Reported balance
After 2025-11-07 transaction · row 15
Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source rowRow 15 · 2025-11-07 · Other · Acquired 2,580,833 · Balance 2,580,833 F9: 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 Offering. F7: The reported security is directly held by Hummingbird Ventures III CommV. F8: Humming Bird Ventures Management NV is the managing member of Hummingbird Opportunity Fund II CommV, Hummingbird Ventures III CommV, Hummingbird Dragons CommV, Hummingbird Collective CommV, and HB&Q NV (HB&Q COMPARTMENT III) (the Hummingbird Funds) and, as a result, may be deemed to beneficially own shares held by the Hummingbird Funds. Mr. Ileri, Barend Van den Brande, and Lukas Decoster are partners of Hummingbird Ventures Management NV and may be deemed to have shared voting and investment power over the shares held by the Hummingbird Funds. The Reporting Persons disclaim beneficial ownership of these shares except to the extent of their pecuniary interests therein. |
| Series B-2 Convertible Preferred StockSEC Table II · derivative / convertible security | IndirectSee Footnotes | 0 |
Reported balance
After 2025-11-07 transaction · row 16
Instrument identity requires review; Table II rows are not merged.
1 source rowRow 16 · 2025-11-07 · Conversion · Disposed 640,727 · Balance 0 F2: The reported security converted into the Issuer's Common Stock on a one-for-one basis automatically immediately prior to the closing of the Issuer's initial public offering of Class A common stock (the "Offering") without payment of further consideration. The shares have no expiration date. F3: The reported security is directly held by HB&Q NV (HB&Q COMPARTMENT III). F8: Humming Bird Ventures Management NV is the managing member of Hummingbird Opportunity Fund II CommV, Hummingbird Ventures III CommV, Hummingbird Dragons CommV, Hummingbird Collective CommV, and HB&Q NV (HB&Q COMPARTMENT III) (the Hummingbird Funds) and, as a result, may be deemed to beneficially own shares held by the Hummingbird Funds. Mr. Ileri, Barend Van den Brande, and Lukas Decoster are partners of Hummingbird Ventures Management NV and may be deemed to have shared voting and investment power over the shares held by the Hummingbird Funds. The Reporting Persons disclaim beneficial ownership of these shares except to the extent of their pecuniary interests therein. |
| Series B-2 Convertible Preferred StockSEC Table II · derivative / convertible security | IndirectSee Footnotes | 0 |
Reported balance
After 2025-11-07 transaction · row 25
Instrument identity requires review; Table II rows are not merged.
1 source rowRow 25 · 2025-11-07 · Conversion · Disposed 320,363 · Balance 0 F2: The reported security converted into the Issuer's Common Stock on a one-for-one basis automatically immediately prior to the closing of the Issuer's initial public offering of Class A common stock (the "Offering") without payment of further consideration. The shares have no expiration date. F7: The reported security is directly held by Hummingbird Ventures III CommV. F8: Humming Bird Ventures Management NV is the managing member of Hummingbird Opportunity Fund II CommV, Hummingbird Ventures III CommV, Hummingbird Dragons CommV, Hummingbird Collective CommV, and HB&Q NV (HB&Q COMPARTMENT III) (the Hummingbird Funds) and, as a result, may be deemed to beneficially own shares held by the Hummingbird Funds. Mr. Ileri, Barend Van den Brande, and Lukas Decoster are partners of Hummingbird Ventures Management NV and may be deemed to have shared voting and investment power over the shares held by the Hummingbird Funds. The Reporting Persons disclaim beneficial ownership of these shares except to the extent of their pecuniary interests therein. |
| Series B-1 Convertible Preferred StockSEC Table II · derivative / convertible security | IndirectSee Footnotes | 0 |
Reported balance
After 2025-11-07 transaction · row 17
Instrument identity requires review; Table II rows are not merged.
1 source rowRow 17 · 2025-11-07 · Conversion · Disposed 18,845 · Balance 0 F2: The reported security converted into the Issuer's Common Stock on a one-for-one basis automatically immediately prior to the closing of the Issuer's initial public offering of Class A common stock (the "Offering") without payment of further consideration. The shares have no expiration date. F4: The reported security is directly held by Hummingbird Collective CommV. F8: Humming Bird Ventures Management NV is the managing member of Hummingbird Opportunity Fund II CommV, Hummingbird Ventures III CommV, Hummingbird Dragons CommV, Hummingbird Collective CommV, and HB&Q NV (HB&Q COMPARTMENT III) (the Hummingbird Funds) and, as a result, may be deemed to beneficially own shares held by the Hummingbird Funds. Mr. Ileri, Barend Van den Brande, and Lukas Decoster are partners of Hummingbird Ventures Management NV and may be deemed to have shared voting and investment power over the shares held by the Hummingbird Funds. The Reporting Persons disclaim beneficial ownership of these shares except to the extent of their pecuniary interests therein. |
| Series B-1 Convertible Preferred StockSEC Table II · derivative / convertible security | IndirectSee Footnotes | 0 |
Reported balance
After 2025-11-07 transaction · row 22
Instrument identity requires review; Table II rows are not merged.
1 source rowRow 22 · 2025-11-07 · Conversion · Disposed 2,261,377 · Balance 0 F2: The reported security converted into the Issuer's Common Stock on a one-for-one basis automatically immediately prior to the closing of the Issuer's initial public offering of Class A common stock (the "Offering") without payment of further consideration. The shares have no expiration date. F6: The reported security is directly held by Hummingbird Opportunity Fund II CommV. F8: Humming Bird Ventures Management NV is the managing member of Hummingbird Opportunity Fund II CommV, Hummingbird Ventures III CommV, Hummingbird Dragons CommV, Hummingbird Collective CommV, and HB&Q NV (HB&Q COMPARTMENT III) (the Hummingbird Funds) and, as a result, may be deemed to beneficially own shares held by the Hummingbird Funds. Mr. Ileri, Barend Van den Brande, and Lukas Decoster are partners of Hummingbird Ventures Management NV and may be deemed to have shared voting and investment power over the shares held by the Hummingbird Funds. The Reporting Persons disclaim beneficial ownership of these shares except to the extent of their pecuniary interests therein. |
| Series C Convertible Preferred StockSEC Table II · derivative / convertible security | IndirectSee Footnotes | 0 |
Reported balance
After 2025-11-07 transaction · row 18
Instrument identity requires review; Table II rows are not merged.
1 source rowRow 18 · 2025-11-07 · Conversion · Disposed 1,569,015 · Balance 0 F2: The reported security converted into the Issuer's Common Stock on a one-for-one basis automatically immediately prior to the closing of the Issuer's initial public offering of Class A common stock (the "Offering") without payment of further consideration. The shares have no expiration date. F5: The reported security is directly held by Hummingbird Dragons CommV. F8: Humming Bird Ventures Management NV is the managing member of Hummingbird Opportunity Fund II CommV, Hummingbird Ventures III CommV, Hummingbird Dragons CommV, Hummingbird Collective CommV, and HB&Q NV (HB&Q COMPARTMENT III) (the Hummingbird Funds) and, as a result, may be deemed to beneficially own shares held by the Hummingbird Funds. Mr. Ileri, Barend Van den Brande, and Lukas Decoster are partners of Hummingbird Ventures Management NV and may be deemed to have shared voting and investment power over the shares held by the Hummingbird Funds. The Reporting Persons disclaim beneficial ownership of these shares except to the extent of their pecuniary interests therein. |
| Series C Convertible Preferred StockSEC Table II · derivative / convertible security | IndirectSee Footnotes | 0 |
Reported balance
After 2025-11-07 transaction · row 23
Instrument identity requires review; Table II rows are not merged.
1 source rowRow 23 · 2025-11-07 · Conversion · Disposed 137,288 · Balance 0 F2: The reported security converted into the Issuer's Common Stock on a one-for-one basis automatically immediately prior to the closing of the Issuer's initial public offering of Class A common stock (the "Offering") without payment of further consideration. The shares have no expiration date. F6: The reported security is directly held by Hummingbird Opportunity Fund II CommV. F8: Humming Bird Ventures Management NV is the managing member of Hummingbird Opportunity Fund II CommV, Hummingbird Ventures III CommV, Hummingbird Dragons CommV, Hummingbird Collective CommV, and HB&Q NV (HB&Q COMPARTMENT III) (the Hummingbird Funds) and, as a result, may be deemed to beneficially own shares held by the Hummingbird Funds. Mr. Ileri, Barend Van den Brande, and Lukas Decoster are partners of Hummingbird Ventures Management NV and may be deemed to have shared voting and investment power over the shares held by the Hummingbird Funds. The Reporting Persons disclaim beneficial ownership of these shares except to the extent of their pecuniary interests therein. |
| Series D Convertible Preferred StockSEC Table II · derivative / convertible security | IndirectSee Footnotes | 0 |
Reported balance
After 2025-11-07 transaction · row 19
Instrument identity requires review; Table II rows are not merged.
1 source rowRow 19 · 2025-11-07 · Conversion · Disposed 446,103 · Balance 0 F2: The reported security converted into the Issuer's Common Stock on a one-for-one basis automatically immediately prior to the closing of the Issuer's initial public offering of Class A common stock (the "Offering") without payment of further consideration. The shares have no expiration date. F5: The reported security is directly held by Hummingbird Dragons CommV. F8: Humming Bird Ventures Management NV is the managing member of Hummingbird Opportunity Fund II CommV, Hummingbird Ventures III CommV, Hummingbird Dragons CommV, Hummingbird Collective CommV, and HB&Q NV (HB&Q COMPARTMENT III) (the Hummingbird Funds) and, as a result, may be deemed to beneficially own shares held by the Hummingbird Funds. Mr. Ileri, Barend Van den Brande, and Lukas Decoster are partners of Hummingbird Ventures Management NV and may be deemed to have shared voting and investment power over the shares held by the Hummingbird Funds. The Reporting Persons disclaim beneficial ownership of these shares except to the extent of their pecuniary interests therein. |
| Series A-1 Convertible Preferred StockSEC Table II · derivative / convertible security | IndirectSee Footnotes | 0 |
Reported balance
After 2025-11-07 transaction · row 20
Instrument identity requires review; Table II rows are not merged.
1 source rowRow 20 · 2025-11-07 · Conversion · Disposed 20,000 · Balance 0 F2: The reported security converted into the Issuer's Common Stock on a one-for-one basis automatically immediately prior to the closing of the Issuer's initial public offering of Class A common stock (the "Offering") without payment of further consideration. The shares have no expiration date. F6: The reported security is directly held by Hummingbird Opportunity Fund II CommV. F8: Humming Bird Ventures Management NV is the managing member of Hummingbird Opportunity Fund II CommV, Hummingbird Ventures III CommV, Hummingbird Dragons CommV, Hummingbird Collective CommV, and HB&Q NV (HB&Q COMPARTMENT III) (the Hummingbird Funds) and, as a result, may be deemed to beneficially own shares held by the Hummingbird Funds. Mr. Ileri, Barend Van den Brande, and Lukas Decoster are partners of Hummingbird Ventures Management NV and may be deemed to have shared voting and investment power over the shares held by the Hummingbird Funds. The Reporting Persons disclaim beneficial ownership of these shares except to the extent of their pecuniary interests therein. |
| Series A-2 Convertible Preferred StockSEC Table II · derivative / convertible security | IndirectSee Footnotes | 0 |
Reported balance
After 2025-11-07 transaction · row 21
Instrument identity requires review; Table II rows are not merged.
1 source rowRow 21 · 2025-11-07 · Conversion · Disposed 33,000 · Balance 0 F2: The reported security converted into the Issuer's Common Stock on a one-for-one basis automatically immediately prior to the closing of the Issuer's initial public offering of Class A common stock (the "Offering") without payment of further consideration. The shares have no expiration date. F6: The reported security is directly held by Hummingbird Opportunity Fund II CommV. F8: Humming Bird Ventures Management NV is the managing member of Hummingbird Opportunity Fund II CommV, Hummingbird Ventures III CommV, Hummingbird Dragons CommV, Hummingbird Collective CommV, and HB&Q NV (HB&Q COMPARTMENT III) (the Hummingbird Funds) and, as a result, may be deemed to beneficially own shares held by the Hummingbird Funds. Mr. Ileri, Barend Van den Brande, and Lukas Decoster are partners of Hummingbird Ventures Management NV and may be deemed to have shared voting and investment power over the shares held by the Hummingbird Funds. The Reporting Persons disclaim beneficial ownership of these shares except to the extent of their pecuniary interests therein. |
| Series A-6 Convertible Preferred StockSEC Table II · derivative / convertible security | IndirectSee Footnotes | 0 |
Reported balance
After 2025-11-07 transaction · row 24
Instrument identity requires review; Table II rows are not merged.
1 source rowRow 24 · 2025-11-07 · Conversion · Disposed 2,260,520 · Balance 0 F2: The reported security converted into the Issuer's Common Stock on a one-for-one basis automatically immediately prior to the closing of the Issuer's initial public offering of Class A common stock (the "Offering") without payment of further consideration. The shares have no expiration date. F7: The reported security is directly held by Hummingbird Ventures III CommV. F8: Humming Bird Ventures Management NV is the managing member of Hummingbird Opportunity Fund II CommV, Hummingbird Ventures III CommV, Hummingbird Dragons CommV, Hummingbird Collective CommV, and HB&Q NV (HB&Q COMPARTMENT III) (the Hummingbird Funds) and, as a result, may be deemed to beneficially own shares held by the Hummingbird Funds. Mr. Ileri, Barend Van den Brande, and Lukas Decoster are partners of Hummingbird Ventures Management NV and may be deemed to have shared voting and investment power over the shares held by the Hummingbird Funds. The Reporting Persons disclaim beneficial ownership of these shares except to the extent of their pecuniary interests therein. |
Filing footnotes · ownership attribution and instrument terms
F1: The total represents shares received upon conversion of shares of Series A-1 Convertible Preferred Stock, Series A-2 Convertible Preferred Stock, Series A-6 Convertible Preferred Stock, Series B-1 Convertible Preferred Stock, Series B-2 Convertible Preferred Stock, Series C Convertible Preferred Stock and/or Series D Convertible Preferred Stock.
F2: The reported security converted into the Issuer's Common Stock on a one-for-one basis automatically immediately prior to the closing of the Issuer's initial public offering of Class A common stock (the "Offering") without payment of further consideration. The shares have no expiration date.
F3: The reported security is directly held by HB&Q NV (HB&Q COMPARTMENT III).
F4: The reported security is directly held by Hummingbird Collective CommV.
F5: The reported security is directly held by Hummingbird Dragons CommV.
F6: The reported security is directly held by Hummingbird Opportunity Fund II CommV.
F7: The reported security is directly held by Hummingbird Ventures III CommV.
F8: Humming Bird Ventures Management NV is the managing member of Hummingbird Opportunity Fund II CommV, Hummingbird Ventures III CommV, Hummingbird Dragons CommV, Hummingbird Collective CommV, and HB&Q NV (HB&Q COMPARTMENT III) (the Hummingbird Funds) and, as a result, may be deemed to beneficially own shares held by the Hummingbird Funds. Mr. Ileri, Barend Van den Brande, and Lukas Decoster are partners of Hummingbird Ventures Management NV and may be deemed to have shared voting and investment power over the shares held by the Hummingbird Funds. The Reporting Persons disclaim beneficial ownership of these shares except to the extent of their pecuniary interests therein.
F9: 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 Offering.
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 |
|---|---|---|---|---|---|---|
| November 07, 2025 Filed Jan 21, 2026 00:27 UTC | BillionToOne, Inc. BLLN · Entity 3992 | ConversionSeries B-2 Convertible Preferred Stock · Derivative | 320,363 | Not disclosed | Not disclosed |
DisclosureSEC source: 0001104659-26-005172 · tm2531914-3_4seq1.xml · derivative · entry 25 Humming Bird Ventures Management NV · CIK 0002099044 · 10% owner Hummingbird Opportunity Fund II CommV · CIK 0002099049 · 10% owner Hummingbird Ventures III CommV · CIK 0002099047 · 10% owner Hummingbird Dragons CommV · CIK 0002099040 · 10% owner Hummingbird Collective CommV · CIK 0002099041 · 10% owner HB&Q NV (HB&Q COMPARTMENT III) · CIK 0002099035 · 10% owner Van den Brande Barend · CIK 0002099027 · 10% owner Decoster Lukas · CIK 0002099021 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · See Footnotes Disclosed balance after: 0 Underlying: Common Stock · 320,363 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. F2 · derivative.exercise_price: The reported security converted into the Issuer's Common Stock on a one-for-one basis automatically immediately prior to the closing of the Issuer's initial public offering of Class A common stock (the "Offering") without payment of further consideration. The shares have no expiration date. F2 · price: The reported security converted into the Issuer's Common Stock on a one-for-one basis automatically immediately prior to the closing of the Issuer's initial public offering of Class A common stock (the "Offering") without payment of further consideration. The shares have no expiration date. F2 · derivative.exercise_date: The reported security converted into the Issuer's Common Stock on a one-for-one basis automatically immediately prior to the closing of the Issuer's initial public offering of Class A common stock (the "Offering") without payment of further consideration. The shares have no expiration date. F2 · derivative.expiration_date: The reported security converted into the Issuer's Common Stock on a one-for-one basis automatically immediately prior to the closing of the Issuer's initial public offering of Class A common stock (the "Offering") without payment of further consideration. The shares have no expiration date. F7 · ownership.nature: The reported security is directly held by Hummingbird Ventures III CommV. F8 · ownership.nature: Humming Bird Ventures Management NV is the managing member of Hummingbird Opportunity Fund II CommV, Hummingbird Ventures III CommV, Hummingbird Dragons CommV, Hummingbird Collective CommV, and HB&Q NV (HB&Q COMPARTMENT III) (the Hummingbird Funds) and, as a result, may be deemed to beneficially own shares held by the Hummingbird Funds. Mr. Ileri, Barend Van den Brande, and Lukas Decoster are partners of Hummingbird Ventures Management NV and may be deemed to have shared voting and investment power over the shares held by the Hummingbird Funds. The Reporting Persons disclaim beneficial ownership of these shares except to the extent of their pecuniary interests therein. Read SEC document |
| November 07, 2025 Filed Jan 21, 2026 00:27 UTC | BillionToOne, Inc. BLLN · Entity 3992 | ConversionSeries A-6 Convertible Preferred Stock · Derivative | 2,260,520 | Not disclosed | Not disclosed |
DisclosureSEC source: 0001104659-26-005172 · tm2531914-3_4seq1.xml · derivative · entry 24 Humming Bird Ventures Management NV · CIK 0002099044 · 10% owner Hummingbird Opportunity Fund II CommV · CIK 0002099049 · 10% owner Hummingbird Ventures III CommV · CIK 0002099047 · 10% owner Hummingbird Dragons CommV · CIK 0002099040 · 10% owner Hummingbird Collective CommV · CIK 0002099041 · 10% owner HB&Q NV (HB&Q COMPARTMENT III) · CIK 0002099035 · 10% owner Van den Brande Barend · CIK 0002099027 · 10% owner Decoster Lukas · CIK 0002099021 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · See Footnotes Disclosed balance after: 0 Underlying: Common Stock · 2,260,520 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. F2 · derivative.exercise_price: The reported security converted into the Issuer's Common Stock on a one-for-one basis automatically immediately prior to the closing of the Issuer's initial public offering of Class A common stock (the "Offering") without payment of further consideration. The shares have no expiration date. F2 · price: The reported security converted into the Issuer's Common Stock on a one-for-one basis automatically immediately prior to the closing of the Issuer's initial public offering of Class A common stock (the "Offering") without payment of further consideration. The shares have no expiration date. F2 · derivative.exercise_date: The reported security converted into the Issuer's Common Stock on a one-for-one basis automatically immediately prior to the closing of the Issuer's initial public offering of Class A common stock (the "Offering") without payment of further consideration. The shares have no expiration date. F2 · derivative.expiration_date: The reported security converted into the Issuer's Common Stock on a one-for-one basis automatically immediately prior to the closing of the Issuer's initial public offering of Class A common stock (the "Offering") without payment of further consideration. The shares have no expiration date. F7 · ownership.nature: The reported security is directly held by Hummingbird Ventures III CommV. F8 · ownership.nature: Humming Bird Ventures Management NV is the managing member of Hummingbird Opportunity Fund II CommV, Hummingbird Ventures III CommV, Hummingbird Dragons CommV, Hummingbird Collective CommV, and HB&Q NV (HB&Q COMPARTMENT III) (the Hummingbird Funds) and, as a result, may be deemed to beneficially own shares held by the Hummingbird Funds. Mr. Ileri, Barend Van den Brande, and Lukas Decoster are partners of Hummingbird Ventures Management NV and may be deemed to have shared voting and investment power over the shares held by the Hummingbird Funds. The Reporting Persons disclaim beneficial ownership of these shares except to the extent of their pecuniary interests therein. Read SEC document |
| November 07, 2025 Filed Jan 21, 2026 00:27 UTC | BillionToOne, Inc. BLLN · Entity 3992 | ConversionSeries C Convertible Preferred Stock · Derivative | 137,288 | Not disclosed | Not disclosed |
DisclosureSEC source: 0001104659-26-005172 · tm2531914-3_4seq1.xml · derivative · entry 23 Humming Bird Ventures Management NV · CIK 0002099044 · 10% owner Hummingbird Opportunity Fund II CommV · CIK 0002099049 · 10% owner Hummingbird Ventures III CommV · CIK 0002099047 · 10% owner Hummingbird Dragons CommV · CIK 0002099040 · 10% owner Hummingbird Collective CommV · CIK 0002099041 · 10% owner HB&Q NV (HB&Q COMPARTMENT III) · CIK 0002099035 · 10% owner Van den Brande Barend · CIK 0002099027 · 10% owner Decoster Lukas · CIK 0002099021 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · See Footnotes Disclosed balance after: 0 Underlying: Common Stock · 137,288 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. F2 · derivative.exercise_price: The reported security converted into the Issuer's Common Stock on a one-for-one basis automatically immediately prior to the closing of the Issuer's initial public offering of Class A common stock (the "Offering") without payment of further consideration. The shares have no expiration date. F2 · price: The reported security converted into the Issuer's Common Stock on a one-for-one basis automatically immediately prior to the closing of the Issuer's initial public offering of Class A common stock (the "Offering") without payment of further consideration. The shares have no expiration date. F2 · derivative.exercise_date: The reported security converted into the Issuer's Common Stock on a one-for-one basis automatically immediately prior to the closing of the Issuer's initial public offering of Class A common stock (the "Offering") without payment of further consideration. The shares have no expiration date. F2 · derivative.expiration_date: The reported security converted into the Issuer's Common Stock on a one-for-one basis automatically immediately prior to the closing of the Issuer's initial public offering of Class A common stock (the "Offering") without payment of further consideration. The shares have no expiration date. F6 · ownership.nature: The reported security is directly held by Hummingbird Opportunity Fund II CommV. F8 · ownership.nature: Humming Bird Ventures Management NV is the managing member of Hummingbird Opportunity Fund II CommV, Hummingbird Ventures III CommV, Hummingbird Dragons CommV, Hummingbird Collective CommV, and HB&Q NV (HB&Q COMPARTMENT III) (the Hummingbird Funds) and, as a result, may be deemed to beneficially own shares held by the Hummingbird Funds. Mr. Ileri, Barend Van den Brande, and Lukas Decoster are partners of Hummingbird Ventures Management NV and may be deemed to have shared voting and investment power over the shares held by the Hummingbird Funds. The Reporting Persons disclaim beneficial ownership of these shares except to the extent of their pecuniary interests therein. Read SEC document |
| November 07, 2025 Filed Jan 21, 2026 00:27 UTC | BillionToOne, Inc. BLLN · Entity 3992 | ConversionSeries B-1 Convertible Preferred Stock · Derivative | 2,261,377 | Not disclosed | Not disclosed |
DisclosureSEC source: 0001104659-26-005172 · tm2531914-3_4seq1.xml · derivative · entry 22 Humming Bird Ventures Management NV · CIK 0002099044 · 10% owner Hummingbird Opportunity Fund II CommV · CIK 0002099049 · 10% owner Hummingbird Ventures III CommV · CIK 0002099047 · 10% owner Hummingbird Dragons CommV · CIK 0002099040 · 10% owner Hummingbird Collective CommV · CIK 0002099041 · 10% owner HB&Q NV (HB&Q COMPARTMENT III) · CIK 0002099035 · 10% owner Van den Brande Barend · CIK 0002099027 · 10% owner Decoster Lukas · CIK 0002099021 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · See Footnotes Disclosed balance after: 0 Underlying: Common Stock · 2,261,377 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. F2 · derivative.exercise_price: The reported security converted into the Issuer's Common Stock on a one-for-one basis automatically immediately prior to the closing of the Issuer's initial public offering of Class A common stock (the "Offering") without payment of further consideration. The shares have no expiration date. F2 · price: The reported security converted into the Issuer's Common Stock on a one-for-one basis automatically immediately prior to the closing of the Issuer's initial public offering of Class A common stock (the "Offering") without payment of further consideration. The shares have no expiration date. F2 · derivative.exercise_date: The reported security converted into the Issuer's Common Stock on a one-for-one basis automatically immediately prior to the closing of the Issuer's initial public offering of Class A common stock (the "Offering") without payment of further consideration. The shares have no expiration date. F2 · derivative.expiration_date: The reported security converted into the Issuer's Common Stock on a one-for-one basis automatically immediately prior to the closing of the Issuer's initial public offering of Class A common stock (the "Offering") without payment of further consideration. The shares have no expiration date. F6 · ownership.nature: The reported security is directly held by Hummingbird Opportunity Fund II CommV. F8 · ownership.nature: Humming Bird Ventures Management NV is the managing member of Hummingbird Opportunity Fund II CommV, Hummingbird Ventures III CommV, Hummingbird Dragons CommV, Hummingbird Collective CommV, and HB&Q NV (HB&Q COMPARTMENT III) (the Hummingbird Funds) and, as a result, may be deemed to beneficially own shares held by the Hummingbird Funds. Mr. Ileri, Barend Van den Brande, and Lukas Decoster are partners of Hummingbird Ventures Management NV and may be deemed to have shared voting and investment power over the shares held by the Hummingbird Funds. The Reporting Persons disclaim beneficial ownership of these shares except to the extent of their pecuniary interests therein. Read SEC document |
| November 07, 2025 Filed Jan 21, 2026 00:27 UTC | BillionToOne, Inc. BLLN · Entity 3992 | ConversionSeries A-2 Convertible Preferred Stock · Derivative | 33,000 | Not disclosed | Not disclosed |
DisclosureSEC source: 0001104659-26-005172 · tm2531914-3_4seq1.xml · derivative · entry 21 Humming Bird Ventures Management NV · CIK 0002099044 · 10% owner Hummingbird Opportunity Fund II CommV · CIK 0002099049 · 10% owner Hummingbird Ventures III CommV · CIK 0002099047 · 10% owner Hummingbird Dragons CommV · CIK 0002099040 · 10% owner Hummingbird Collective CommV · CIK 0002099041 · 10% owner HB&Q NV (HB&Q COMPARTMENT III) · CIK 0002099035 · 10% owner Van den Brande Barend · CIK 0002099027 · 10% owner Decoster Lukas · CIK 0002099021 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · See Footnotes Disclosed balance after: 0 Underlying: Common Stock · 33,000 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. F2 · derivative.exercise_price: The reported security converted into the Issuer's Common Stock on a one-for-one basis automatically immediately prior to the closing of the Issuer's initial public offering of Class A common stock (the "Offering") without payment of further consideration. The shares have no expiration date. F2 · price: The reported security converted into the Issuer's Common Stock on a one-for-one basis automatically immediately prior to the closing of the Issuer's initial public offering of Class A common stock (the "Offering") without payment of further consideration. The shares have no expiration date. F2 · derivative.exercise_date: The reported security converted into the Issuer's Common Stock on a one-for-one basis automatically immediately prior to the closing of the Issuer's initial public offering of Class A common stock (the "Offering") without payment of further consideration. The shares have no expiration date. F2 · derivative.expiration_date: The reported security converted into the Issuer's Common Stock on a one-for-one basis automatically immediately prior to the closing of the Issuer's initial public offering of Class A common stock (the "Offering") without payment of further consideration. The shares have no expiration date. F6 · ownership.nature: The reported security is directly held by Hummingbird Opportunity Fund II CommV. F8 · ownership.nature: Humming Bird Ventures Management NV is the managing member of Hummingbird Opportunity Fund II CommV, Hummingbird Ventures III CommV, Hummingbird Dragons CommV, Hummingbird Collective CommV, and HB&Q NV (HB&Q COMPARTMENT III) (the Hummingbird Funds) and, as a result, may be deemed to beneficially own shares held by the Hummingbird Funds. Mr. Ileri, Barend Van den Brande, and Lukas Decoster are partners of Hummingbird Ventures Management NV and may be deemed to have shared voting and investment power over the shares held by the Hummingbird Funds. The Reporting Persons disclaim beneficial ownership of these shares except to the extent of their pecuniary interests therein. Read SEC document |
| November 07, 2025 Filed Jan 21, 2026 00:27 UTC | BillionToOne, Inc. BLLN · Entity 3992 | ConversionSeries A-1 Convertible Preferred Stock · Derivative | 20,000 | Not disclosed | Not disclosed |
DisclosureSEC source: 0001104659-26-005172 · tm2531914-3_4seq1.xml · derivative · entry 20 Humming Bird Ventures Management NV · CIK 0002099044 · 10% owner Hummingbird Opportunity Fund II CommV · CIK 0002099049 · 10% owner Hummingbird Ventures III CommV · CIK 0002099047 · 10% owner Hummingbird Dragons CommV · CIK 0002099040 · 10% owner Hummingbird Collective CommV · CIK 0002099041 · 10% owner HB&Q NV (HB&Q COMPARTMENT III) · CIK 0002099035 · 10% owner Van den Brande Barend · CIK 0002099027 · 10% owner Decoster Lukas · CIK 0002099021 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · See Footnotes Disclosed balance after: 0 Underlying: 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. F2 · derivative.exercise_price: The reported security converted into the Issuer's Common Stock on a one-for-one basis automatically immediately prior to the closing of the Issuer's initial public offering of Class A common stock (the "Offering") without payment of further consideration. The shares have no expiration date. F2 · price: The reported security converted into the Issuer's Common Stock on a one-for-one basis automatically immediately prior to the closing of the Issuer's initial public offering of Class A common stock (the "Offering") without payment of further consideration. The shares have no expiration date. F2 · derivative.exercise_date: The reported security converted into the Issuer's Common Stock on a one-for-one basis automatically immediately prior to the closing of the Issuer's initial public offering of Class A common stock (the "Offering") without payment of further consideration. The shares have no expiration date. F2 · derivative.expiration_date: The reported security converted into the Issuer's Common Stock on a one-for-one basis automatically immediately prior to the closing of the Issuer's initial public offering of Class A common stock (the "Offering") without payment of further consideration. The shares have no expiration date. F6 · ownership.nature: The reported security is directly held by Hummingbird Opportunity Fund II CommV. F8 · ownership.nature: Humming Bird Ventures Management NV is the managing member of Hummingbird Opportunity Fund II CommV, Hummingbird Ventures III CommV, Hummingbird Dragons CommV, Hummingbird Collective CommV, and HB&Q NV (HB&Q COMPARTMENT III) (the Hummingbird Funds) and, as a result, may be deemed to beneficially own shares held by the Hummingbird Funds. Mr. Ileri, Barend Van den Brande, and Lukas Decoster are partners of Hummingbird Ventures Management NV and may be deemed to have shared voting and investment power over the shares held by the Hummingbird Funds. The Reporting Persons disclaim beneficial ownership of these shares except to the extent of their pecuniary interests therein. Read SEC document |
| November 07, 2025 Filed Jan 21, 2026 00:27 UTC | BillionToOne, Inc. BLLN · Entity 3992 | ConversionSeries D Convertible Preferred Stock · Derivative | 446,103 | Not disclosed | Not disclosed |
DisclosureSEC source: 0001104659-26-005172 · tm2531914-3_4seq1.xml · derivative · entry 19 Humming Bird Ventures Management NV · CIK 0002099044 · 10% owner Hummingbird Opportunity Fund II CommV · CIK 0002099049 · 10% owner Hummingbird Ventures III CommV · CIK 0002099047 · 10% owner Hummingbird Dragons CommV · CIK 0002099040 · 10% owner Hummingbird Collective CommV · CIK 0002099041 · 10% owner HB&Q NV (HB&Q COMPARTMENT III) · CIK 0002099035 · 10% owner Van den Brande Barend · CIK 0002099027 · 10% owner Decoster Lukas · CIK 0002099021 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · See Footnotes Disclosed balance after: 0 Underlying: Common Stock · 446,103 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. F2 · derivative.exercise_price: The reported security converted into the Issuer's Common Stock on a one-for-one basis automatically immediately prior to the closing of the Issuer's initial public offering of Class A common stock (the "Offering") without payment of further consideration. The shares have no expiration date. F2 · price: The reported security converted into the Issuer's Common Stock on a one-for-one basis automatically immediately prior to the closing of the Issuer's initial public offering of Class A common stock (the "Offering") without payment of further consideration. The shares have no expiration date. F2 · derivative.exercise_date: The reported security converted into the Issuer's Common Stock on a one-for-one basis automatically immediately prior to the closing of the Issuer's initial public offering of Class A common stock (the "Offering") without payment of further consideration. The shares have no expiration date. F2 · derivative.expiration_date: The reported security converted into the Issuer's Common Stock on a one-for-one basis automatically immediately prior to the closing of the Issuer's initial public offering of Class A common stock (the "Offering") without payment of further consideration. The shares have no expiration date. F5 · ownership.nature: The reported security is directly held by Hummingbird Dragons CommV. F8 · ownership.nature: Humming Bird Ventures Management NV is the managing member of Hummingbird Opportunity Fund II CommV, Hummingbird Ventures III CommV, Hummingbird Dragons CommV, Hummingbird Collective CommV, and HB&Q NV (HB&Q COMPARTMENT III) (the Hummingbird Funds) and, as a result, may be deemed to beneficially own shares held by the Hummingbird Funds. Mr. Ileri, Barend Van den Brande, and Lukas Decoster are partners of Hummingbird Ventures Management NV and may be deemed to have shared voting and investment power over the shares held by the Hummingbird Funds. The Reporting Persons disclaim beneficial ownership of these shares except to the extent of their pecuniary interests therein. Read SEC document |
| November 07, 2025 Filed Jan 21, 2026 00:27 UTC | BillionToOne, Inc. BLLN · Entity 3992 | ConversionSeries C Convertible Preferred Stock · Derivative | 1,569,015 | Not disclosed | Not disclosed |
DisclosureSEC source: 0001104659-26-005172 · tm2531914-3_4seq1.xml · derivative · entry 18 Humming Bird Ventures Management NV · CIK 0002099044 · 10% owner Hummingbird Opportunity Fund II CommV · CIK 0002099049 · 10% owner Hummingbird Ventures III CommV · CIK 0002099047 · 10% owner Hummingbird Dragons CommV · CIK 0002099040 · 10% owner Hummingbird Collective CommV · CIK 0002099041 · 10% owner HB&Q NV (HB&Q COMPARTMENT III) · CIK 0002099035 · 10% owner Van den Brande Barend · CIK 0002099027 · 10% owner Decoster Lukas · CIK 0002099021 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · See Footnotes Disclosed balance after: 0 Underlying: Common Stock · 1,569,015 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. F2 · derivative.exercise_price: The reported security converted into the Issuer's Common Stock on a one-for-one basis automatically immediately prior to the closing of the Issuer's initial public offering of Class A common stock (the "Offering") without payment of further consideration. The shares have no expiration date. F2 · price: The reported security converted into the Issuer's Common Stock on a one-for-one basis automatically immediately prior to the closing of the Issuer's initial public offering of Class A common stock (the "Offering") without payment of further consideration. The shares have no expiration date. F2 · derivative.exercise_date: The reported security converted into the Issuer's Common Stock on a one-for-one basis automatically immediately prior to the closing of the Issuer's initial public offering of Class A common stock (the "Offering") without payment of further consideration. The shares have no expiration date. F2 · derivative.expiration_date: The reported security converted into the Issuer's Common Stock on a one-for-one basis automatically immediately prior to the closing of the Issuer's initial public offering of Class A common stock (the "Offering") without payment of further consideration. The shares have no expiration date. F5 · ownership.nature: The reported security is directly held by Hummingbird Dragons CommV. F8 · ownership.nature: Humming Bird Ventures Management NV is the managing member of Hummingbird Opportunity Fund II CommV, Hummingbird Ventures III CommV, Hummingbird Dragons CommV, Hummingbird Collective CommV, and HB&Q NV (HB&Q COMPARTMENT III) (the Hummingbird Funds) and, as a result, may be deemed to beneficially own shares held by the Hummingbird Funds. Mr. Ileri, Barend Van den Brande, and Lukas Decoster are partners of Hummingbird Ventures Management NV and may be deemed to have shared voting and investment power over the shares held by the Hummingbird Funds. The Reporting Persons disclaim beneficial ownership of these shares except to the extent of their pecuniary interests therein. Read SEC document |
| November 07, 2025 Filed Jan 21, 2026 00:27 UTC | BillionToOne, Inc. BLLN · Entity 3992 | ConversionSeries B-1 Convertible Preferred Stock · Derivative | 18,845 | Not disclosed | Not disclosed |
DisclosureSEC source: 0001104659-26-005172 · tm2531914-3_4seq1.xml · derivative · entry 17 Humming Bird Ventures Management NV · CIK 0002099044 · 10% owner Hummingbird Opportunity Fund II CommV · CIK 0002099049 · 10% owner Hummingbird Ventures III CommV · CIK 0002099047 · 10% owner Hummingbird Dragons CommV · CIK 0002099040 · 10% owner Hummingbird Collective CommV · CIK 0002099041 · 10% owner HB&Q NV (HB&Q COMPARTMENT III) · CIK 0002099035 · 10% owner Van den Brande Barend · CIK 0002099027 · 10% owner Decoster Lukas · CIK 0002099021 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · See Footnotes Disclosed balance after: 0 Underlying: Common Stock · 18,845 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. F2 · derivative.exercise_price: The reported security converted into the Issuer's Common Stock on a one-for-one basis automatically immediately prior to the closing of the Issuer's initial public offering of Class A common stock (the "Offering") without payment of further consideration. The shares have no expiration date. F2 · price: The reported security converted into the Issuer's Common Stock on a one-for-one basis automatically immediately prior to the closing of the Issuer's initial public offering of Class A common stock (the "Offering") without payment of further consideration. The shares have no expiration date. F2 · derivative.exercise_date: The reported security converted into the Issuer's Common Stock on a one-for-one basis automatically immediately prior to the closing of the Issuer's initial public offering of Class A common stock (the "Offering") without payment of further consideration. The shares have no expiration date. F2 · derivative.expiration_date: The reported security converted into the Issuer's Common Stock on a one-for-one basis automatically immediately prior to the closing of the Issuer's initial public offering of Class A common stock (the "Offering") without payment of further consideration. The shares have no expiration date. F4 · ownership.nature: The reported security is directly held by Hummingbird Collective CommV. F8 · ownership.nature: Humming Bird Ventures Management NV is the managing member of Hummingbird Opportunity Fund II CommV, Hummingbird Ventures III CommV, Hummingbird Dragons CommV, Hummingbird Collective CommV, and HB&Q NV (HB&Q COMPARTMENT III) (the Hummingbird Funds) and, as a result, may be deemed to beneficially own shares held by the Hummingbird Funds. Mr. Ileri, Barend Van den Brande, and Lukas Decoster are partners of Hummingbird Ventures Management NV and may be deemed to have shared voting and investment power over the shares held by the Hummingbird Funds. The Reporting Persons disclaim beneficial ownership of these shares except to the extent of their pecuniary interests therein. Read SEC document |
| November 07, 2025 Filed Jan 21, 2026 00:27 UTC | BillionToOne, Inc. BLLN · Entity 3992 | ConversionSeries B-2 Convertible Preferred Stock · Derivative | 640,727 | Not disclosed | Not disclosed |
DisclosureSEC source: 0001104659-26-005172 · tm2531914-3_4seq1.xml · derivative · entry 16 Humming Bird Ventures Management NV · CIK 0002099044 · 10% owner Hummingbird Opportunity Fund II CommV · CIK 0002099049 · 10% owner Hummingbird Ventures III CommV · CIK 0002099047 · 10% owner Hummingbird Dragons CommV · CIK 0002099040 · 10% owner Hummingbird Collective CommV · CIK 0002099041 · 10% owner HB&Q NV (HB&Q COMPARTMENT III) · CIK 0002099035 · 10% owner Van den Brande Barend · CIK 0002099027 · 10% owner Decoster Lukas · CIK 0002099021 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · See Footnotes Disclosed balance after: 0 Underlying: Common Stock · 640,727 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. F2 · derivative.exercise_price: The reported security converted into the Issuer's Common Stock on a one-for-one basis automatically immediately prior to the closing of the Issuer's initial public offering of Class A common stock (the "Offering") without payment of further consideration. The shares have no expiration date. F2 · price: The reported security converted into the Issuer's Common Stock on a one-for-one basis automatically immediately prior to the closing of the Issuer's initial public offering of Class A common stock (the "Offering") without payment of further consideration. The shares have no expiration date. F2 · derivative.exercise_date: The reported security converted into the Issuer's Common Stock on a one-for-one basis automatically immediately prior to the closing of the Issuer's initial public offering of Class A common stock (the "Offering") without payment of further consideration. The shares have no expiration date. F2 · derivative.expiration_date: The reported security converted into the Issuer's Common Stock on a one-for-one basis automatically immediately prior to the closing of the Issuer's initial public offering of Class A common stock (the "Offering") without payment of further consideration. The shares have no expiration date. F3 · ownership.nature: The reported security is directly held by HB&Q NV (HB&Q COMPARTMENT III). F8 · ownership.nature: Humming Bird Ventures Management NV is the managing member of Hummingbird Opportunity Fund II CommV, Hummingbird Ventures III CommV, Hummingbird Dragons CommV, Hummingbird Collective CommV, and HB&Q NV (HB&Q COMPARTMENT III) (the Hummingbird Funds) and, as a result, may be deemed to beneficially own shares held by the Hummingbird Funds. Mr. Ileri, Barend Van den Brande, and Lukas Decoster are partners of Hummingbird Ventures Management NV and may be deemed to have shared voting and investment power over the shares held by the Hummingbird Funds. The Reporting Persons disclaim beneficial ownership of these shares except to the extent of their pecuniary interests therein. Read SEC document |
| November 07, 2025 Filed Jan 21, 2026 00:27 UTC | BillionToOne, Inc. BLLN · Entity 3992 | OtherClass A Common Stock | 2,580,833 | Not disclosed | Not disclosed |
DisclosureSEC source: 0001104659-26-005172 · tm2531914-3_4seq1.xml · nonDerivative · entry 15 Humming Bird Ventures Management NV · CIK 0002099044 · 10% owner Hummingbird Opportunity Fund II CommV · CIK 0002099049 · 10% owner Hummingbird Ventures III CommV · CIK 0002099047 · 10% owner Hummingbird Dragons CommV · CIK 0002099040 · 10% owner Hummingbird Collective CommV · CIK 0002099041 · 10% owner HB&Q NV (HB&Q COMPARTMENT III) · CIK 0002099035 · 10% owner Van den Brande Barend · CIK 0002099027 · 10% owner Decoster Lukas · CIK 0002099021 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · See Footnotes Disclosed balance after: 2,580,833 F9 · 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 Offering. F9 · 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 Offering. F7 · ownership.nature: The reported security is directly held by Hummingbird Ventures III CommV. F8 · ownership.nature: Humming Bird Ventures Management NV is the managing member of Hummingbird Opportunity Fund II CommV, Hummingbird Ventures III CommV, Hummingbird Dragons CommV, Hummingbird Collective CommV, and HB&Q NV (HB&Q COMPARTMENT III) (the Hummingbird Funds) and, as a result, may be deemed to beneficially own shares held by the Hummingbird Funds. Mr. Ileri, Barend Van den Brande, and Lukas Decoster are partners of Hummingbird Ventures Management NV and may be deemed to have shared voting and investment power over the shares held by the Hummingbird Funds. The Reporting Persons disclaim beneficial ownership of these shares except to the extent of their pecuniary interests therein. Read SEC document |
| November 07, 2025 Filed Jan 21, 2026 00:27 UTC | BillionToOne, Inc. BLLN · Entity 3992 | OtherClass A Common Stock | 2,631,664 | Not disclosed | Not disclosed |
DisclosureSEC source: 0001104659-26-005172 · tm2531914-3_4seq1.xml · nonDerivative · entry 14 Humming Bird Ventures Management NV · CIK 0002099044 · 10% owner Hummingbird Opportunity Fund II CommV · CIK 0002099049 · 10% owner Hummingbird Ventures III CommV · CIK 0002099047 · 10% owner Hummingbird Dragons CommV · CIK 0002099040 · 10% owner Hummingbird Collective CommV · CIK 0002099041 · 10% owner HB&Q NV (HB&Q COMPARTMENT III) · CIK 0002099035 · 10% owner Van den Brande Barend · CIK 0002099027 · 10% owner Decoster Lukas · CIK 0002099021 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · See Footnotes Disclosed balance after: 2,631,664 F9 · 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 Offering. F9 · 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 Offering. F6 · ownership.nature: The reported security is directly held by Hummingbird Opportunity Fund II CommV. F8 · ownership.nature: Humming Bird Ventures Management NV is the managing member of Hummingbird Opportunity Fund II CommV, Hummingbird Ventures III CommV, Hummingbird Dragons CommV, Hummingbird Collective CommV, and HB&Q NV (HB&Q COMPARTMENT III) (the Hummingbird Funds) and, as a result, may be deemed to beneficially own shares held by the Hummingbird Funds. Mr. Ileri, Barend Van den Brande, and Lukas Decoster are partners of Hummingbird Ventures Management NV and may be deemed to have shared voting and investment power over the shares held by the Hummingbird Funds. The Reporting Persons disclaim beneficial ownership of these shares except to the extent of their pecuniary interests therein. Read SEC document |
| November 07, 2025 Filed Jan 21, 2026 00:27 UTC | BillionToOne, Inc. BLLN · Entity 3992 | OtherClass A Common Stock | 2,015,118 | Not disclosed | Not disclosed |
DisclosureSEC source: 0001104659-26-005172 · tm2531914-3_4seq1.xml · nonDerivative · entry 13 Humming Bird Ventures Management NV · CIK 0002099044 · 10% owner Hummingbird Opportunity Fund II CommV · CIK 0002099049 · 10% owner Hummingbird Ventures III CommV · CIK 0002099047 · 10% owner Hummingbird Dragons CommV · CIK 0002099040 · 10% owner Hummingbird Collective CommV · CIK 0002099041 · 10% owner HB&Q NV (HB&Q COMPARTMENT III) · CIK 0002099035 · 10% owner Van den Brande Barend · CIK 0002099027 · 10% owner Decoster Lukas · CIK 0002099021 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · See Footnotes Disclosed balance after: 2,015,118 F9 · 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 Offering. F9 · 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 Offering. F5 · ownership.nature: The reported security is directly held by Hummingbird Dragons CommV. F8 · ownership.nature: Humming Bird Ventures Management NV is the managing member of Hummingbird Opportunity Fund II CommV, Hummingbird Ventures III CommV, Hummingbird Dragons CommV, Hummingbird Collective CommV, and HB&Q NV (HB&Q COMPARTMENT III) (the Hummingbird Funds) and, as a result, may be deemed to beneficially own shares held by the Hummingbird Funds. Mr. Ileri, Barend Van den Brande, and Lukas Decoster are partners of Hummingbird Ventures Management NV and may be deemed to have shared voting and investment power over the shares held by the Hummingbird Funds. The Reporting Persons disclaim beneficial ownership of these shares except to the extent of their pecuniary interests therein. Read SEC document |
| November 07, 2025 Filed Jan 21, 2026 00:27 UTC | BillionToOne, Inc. BLLN · Entity 3992 | OtherClass A Common Stock | 18,845 | Not disclosed | Not disclosed |
DisclosureSEC source: 0001104659-26-005172 · tm2531914-3_4seq1.xml · nonDerivative · entry 12 Humming Bird Ventures Management NV · CIK 0002099044 · 10% owner Hummingbird Opportunity Fund II CommV · CIK 0002099049 · 10% owner Hummingbird Ventures III CommV · CIK 0002099047 · 10% owner Hummingbird Dragons CommV · CIK 0002099040 · 10% owner Hummingbird Collective CommV · CIK 0002099041 · 10% owner HB&Q NV (HB&Q COMPARTMENT III) · CIK 0002099035 · 10% owner Van den Brande Barend · CIK 0002099027 · 10% owner Decoster Lukas · CIK 0002099021 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · See Footnotes Disclosed balance after: 18,845 F9 · 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 Offering. F9 · 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 Offering. F4 · ownership.nature: The reported security is directly held by Hummingbird Collective CommV. F8 · ownership.nature: Humming Bird Ventures Management NV is the managing member of Hummingbird Opportunity Fund II CommV, Hummingbird Ventures III CommV, Hummingbird Dragons CommV, Hummingbird Collective CommV, and HB&Q NV (HB&Q COMPARTMENT III) (the Hummingbird Funds) and, as a result, may be deemed to beneficially own shares held by the Hummingbird Funds. Mr. Ileri, Barend Van den Brande, and Lukas Decoster are partners of Hummingbird Ventures Management NV and may be deemed to have shared voting and investment power over the shares held by the Hummingbird Funds. The Reporting Persons disclaim beneficial ownership of these shares except to the extent of their pecuniary interests therein. Read SEC document |
| November 07, 2025 Filed Jan 21, 2026 00:27 UTC | BillionToOne, Inc. BLLN · Entity 3992 | OtherClass A Common Stock | 640,727 | Not disclosed | Not disclosed |
DisclosureSEC source: 0001104659-26-005172 · tm2531914-3_4seq1.xml · nonDerivative · entry 11 Humming Bird Ventures Management NV · CIK 0002099044 · 10% owner Hummingbird Opportunity Fund II CommV · CIK 0002099049 · 10% owner Hummingbird Ventures III CommV · CIK 0002099047 · 10% owner Hummingbird Dragons CommV · CIK 0002099040 · 10% owner Hummingbird Collective CommV · CIK 0002099041 · 10% owner HB&Q NV (HB&Q COMPARTMENT III) · CIK 0002099035 · 10% owner Van den Brande Barend · CIK 0002099027 · 10% owner Decoster Lukas · CIK 0002099021 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · See Footnotes Disclosed balance after: 640,727 F9 · 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 Offering. F9 · 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 Offering. F3 · ownership.nature: The reported security is directly held by HB&Q NV (HB&Q COMPARTMENT III). F8 · ownership.nature: Humming Bird Ventures Management NV is the managing member of Hummingbird Opportunity Fund II CommV, Hummingbird Ventures III CommV, Hummingbird Dragons CommV, Hummingbird Collective CommV, and HB&Q NV (HB&Q COMPARTMENT III) (the Hummingbird Funds) and, as a result, may be deemed to beneficially own shares held by the Hummingbird Funds. Mr. Ileri, Barend Van den Brande, and Lukas Decoster are partners of Hummingbird Ventures Management NV and may be deemed to have shared voting and investment power over the shares held by the Hummingbird Funds. The Reporting Persons disclaim beneficial ownership of these shares except to the extent of their pecuniary interests therein. Read SEC document |
| November 07, 2025 Filed Jan 21, 2026 00:27 UTC | BillionToOne, Inc. BLLN · Entity 3992 | OtherCommon Stock | 2,580,833 | Not disclosed | Not disclosed |
DisclosureSEC source: 0001104659-26-005172 · tm2531914-3_4seq1.xml · nonDerivative · entry 10 Humming Bird Ventures Management NV · CIK 0002099044 · 10% owner Hummingbird Opportunity Fund II CommV · CIK 0002099049 · 10% owner Hummingbird Ventures III CommV · CIK 0002099047 · 10% owner Hummingbird Dragons CommV · CIK 0002099040 · 10% owner Hummingbird Collective CommV · CIK 0002099041 · 10% owner HB&Q NV (HB&Q COMPARTMENT III) · CIK 0002099035 · 10% owner Van den Brande Barend · CIK 0002099027 · 10% owner Decoster Lukas · CIK 0002099021 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · See Footnotes Disclosed balance after: 0 F9 · 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 Offering. F9 · 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 Offering. F7 · ownership.nature: The reported security is directly held by Hummingbird Ventures III CommV. F8 · ownership.nature: Humming Bird Ventures Management NV is the managing member of Hummingbird Opportunity Fund II CommV, Hummingbird Ventures III CommV, Hummingbird Dragons CommV, Hummingbird Collective CommV, and HB&Q NV (HB&Q COMPARTMENT III) (the Hummingbird Funds) and, as a result, may be deemed to beneficially own shares held by the Hummingbird Funds. Mr. Ileri, Barend Van den Brande, and Lukas Decoster are partners of Hummingbird Ventures Management NV and may be deemed to have shared voting and investment power over the shares held by the Hummingbird Funds. The Reporting Persons disclaim beneficial ownership of these shares except to the extent of their pecuniary interests therein. Read SEC document |
| November 07, 2025 Filed Jan 21, 2026 00:27 UTC | BillionToOne, Inc. BLLN · Entity 3992 | OtherCommon Stock | 2,631,664 | Not disclosed | Not disclosed |
DisclosureSEC source: 0001104659-26-005172 · tm2531914-3_4seq1.xml · nonDerivative · entry 9 Humming Bird Ventures Management NV · CIK 0002099044 · 10% owner Hummingbird Opportunity Fund II CommV · CIK 0002099049 · 10% owner Hummingbird Ventures III CommV · CIK 0002099047 · 10% owner Hummingbird Dragons CommV · CIK 0002099040 · 10% owner Hummingbird Collective CommV · CIK 0002099041 · 10% owner HB&Q NV (HB&Q COMPARTMENT III) · CIK 0002099035 · 10% owner Van den Brande Barend · CIK 0002099027 · 10% owner Decoster Lukas · CIK 0002099021 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · See Footnotes Disclosed balance after: 0 F9 · 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 Offering. F9 · 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 Offering. F6 · ownership.nature: The reported security is directly held by Hummingbird Opportunity Fund II CommV. F8 · ownership.nature: Humming Bird Ventures Management NV is the managing member of Hummingbird Opportunity Fund II CommV, Hummingbird Ventures III CommV, Hummingbird Dragons CommV, Hummingbird Collective CommV, and HB&Q NV (HB&Q COMPARTMENT III) (the Hummingbird Funds) and, as a result, may be deemed to beneficially own shares held by the Hummingbird Funds. Mr. Ileri, Barend Van den Brande, and Lukas Decoster are partners of Hummingbird Ventures Management NV and may be deemed to have shared voting and investment power over the shares held by the Hummingbird Funds. The Reporting Persons disclaim beneficial ownership of these shares except to the extent of their pecuniary interests therein. Read SEC document |
| November 07, 2025 Filed Jan 21, 2026 00:27 UTC | BillionToOne, Inc. BLLN · Entity 3992 | OtherCommon Stock | 2,015,118 | Not disclosed | Not disclosed |
DisclosureSEC source: 0001104659-26-005172 · tm2531914-3_4seq1.xml · nonDerivative · entry 8 Humming Bird Ventures Management NV · CIK 0002099044 · 10% owner Hummingbird Opportunity Fund II CommV · CIK 0002099049 · 10% owner Hummingbird Ventures III CommV · CIK 0002099047 · 10% owner Hummingbird Dragons CommV · CIK 0002099040 · 10% owner Hummingbird Collective CommV · CIK 0002099041 · 10% owner HB&Q NV (HB&Q COMPARTMENT III) · CIK 0002099035 · 10% owner Van den Brande Barend · CIK 0002099027 · 10% owner Decoster Lukas · CIK 0002099021 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · See Footnotes Disclosed balance after: 0 F9 · 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 Offering. F9 · 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 Offering. F5 · ownership.nature: The reported security is directly held by Hummingbird Dragons CommV. F8 · ownership.nature: Humming Bird Ventures Management NV is the managing member of Hummingbird Opportunity Fund II CommV, Hummingbird Ventures III CommV, Hummingbird Dragons CommV, Hummingbird Collective CommV, and HB&Q NV (HB&Q COMPARTMENT III) (the Hummingbird Funds) and, as a result, may be deemed to beneficially own shares held by the Hummingbird Funds. Mr. Ileri, Barend Van den Brande, and Lukas Decoster are partners of Hummingbird Ventures Management NV and may be deemed to have shared voting and investment power over the shares held by the Hummingbird Funds. The Reporting Persons disclaim beneficial ownership of these shares except to the extent of their pecuniary interests therein. Read SEC document |
| November 07, 2025 Filed Jan 21, 2026 00:27 UTC | BillionToOne, Inc. BLLN · Entity 3992 | OtherCommon Stock | 18,845 | Not disclosed | Not disclosed |
DisclosureSEC source: 0001104659-26-005172 · tm2531914-3_4seq1.xml · nonDerivative · entry 7 Humming Bird Ventures Management NV · CIK 0002099044 · 10% owner Hummingbird Opportunity Fund II CommV · CIK 0002099049 · 10% owner Hummingbird Ventures III CommV · CIK 0002099047 · 10% owner Hummingbird Dragons CommV · CIK 0002099040 · 10% owner Hummingbird Collective CommV · CIK 0002099041 · 10% owner HB&Q NV (HB&Q COMPARTMENT III) · CIK 0002099035 · 10% owner Van den Brande Barend · CIK 0002099027 · 10% owner Decoster Lukas · CIK 0002099021 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · See Footnotes Disclosed balance after: 0 F9 · 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 Offering. F9 · 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 Offering. F4 · ownership.nature: The reported security is directly held by Hummingbird Collective CommV. F8 · ownership.nature: Humming Bird Ventures Management NV is the managing member of Hummingbird Opportunity Fund II CommV, Hummingbird Ventures III CommV, Hummingbird Dragons CommV, Hummingbird Collective CommV, and HB&Q NV (HB&Q COMPARTMENT III) (the Hummingbird Funds) and, as a result, may be deemed to beneficially own shares held by the Hummingbird Funds. Mr. Ileri, Barend Van den Brande, and Lukas Decoster are partners of Hummingbird Ventures Management NV and may be deemed to have shared voting and investment power over the shares held by the Hummingbird Funds. The Reporting Persons disclaim beneficial ownership of these shares except to the extent of their pecuniary interests therein. Read SEC document |
| November 07, 2025 Filed Jan 21, 2026 00:27 UTC | BillionToOne, Inc. BLLN · Entity 3992 | OtherCommon Stock | 640,727 | Not disclosed | Not disclosed |
DisclosureSEC source: 0001104659-26-005172 · tm2531914-3_4seq1.xml · nonDerivative · entry 6 Humming Bird Ventures Management NV · CIK 0002099044 · 10% owner Hummingbird Opportunity Fund II CommV · CIK 0002099049 · 10% owner Hummingbird Ventures III CommV · CIK 0002099047 · 10% owner Hummingbird Dragons CommV · CIK 0002099040 · 10% owner Hummingbird Collective CommV · CIK 0002099041 · 10% owner HB&Q NV (HB&Q COMPARTMENT III) · CIK 0002099035 · 10% owner Van den Brande Barend · CIK 0002099027 · 10% owner Decoster Lukas · CIK 0002099021 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · See Footnotes Disclosed balance after: 0 F9 · 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 Offering. F9 · 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 Offering. F3 · ownership.nature: The reported security is directly held by HB&Q NV (HB&Q COMPARTMENT III). F8 · ownership.nature: Humming Bird Ventures Management NV is the managing member of Hummingbird Opportunity Fund II CommV, Hummingbird Ventures III CommV, Hummingbird Dragons CommV, Hummingbird Collective CommV, and HB&Q NV (HB&Q COMPARTMENT III) (the Hummingbird Funds) and, as a result, may be deemed to beneficially own shares held by the Hummingbird Funds. Mr. Ileri, Barend Van den Brande, and Lukas Decoster are partners of Hummingbird Ventures Management NV and may be deemed to have shared voting and investment power over the shares held by the Hummingbird Funds. The Reporting Persons disclaim beneficial ownership of these shares except to the extent of their pecuniary interests therein. Read SEC document |
| November 07, 2025 Filed Jan 21, 2026 00:27 UTC | BillionToOne, Inc. BLLN · Entity 3992 | ConversionCommon Stock | 2,580,833 | Not disclosed | Not disclosed |
DisclosureSEC source: 0001104659-26-005172 · tm2531914-3_4seq1.xml · nonDerivative · entry 5 Humming Bird Ventures Management NV · CIK 0002099044 · 10% owner Hummingbird Opportunity Fund II CommV · CIK 0002099049 · 10% owner Hummingbird Ventures III CommV · CIK 0002099047 · 10% owner Hummingbird Dragons CommV · CIK 0002099040 · 10% owner Hummingbird Collective CommV · CIK 0002099041 · 10% owner HB&Q NV (HB&Q COMPARTMENT III) · CIK 0002099035 · 10% owner Van den Brande Barend · CIK 0002099027 · 10% owner Decoster Lukas · CIK 0002099021 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · See Footnotes Disclosed balance after: 2,580,833 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 total represents shares received upon conversion of shares of Series A-1 Convertible Preferred Stock, Series A-2 Convertible Preferred Stock, Series A-6 Convertible Preferred Stock, Series B-1 Convertible Preferred Stock, Series B-2 Convertible Preferred Stock, Series C Convertible Preferred Stock and/or Series D Convertible Preferred Stock. F2 · kind: The reported security converted into the Issuer's Common Stock on a one-for-one basis automatically immediately prior to the closing of the Issuer's initial public offering of Class A common stock (the "Offering") without payment of further consideration. The shares have no expiration date. F2 · price: The reported security converted into the Issuer's Common Stock on a one-for-one basis automatically immediately prior to the closing of the Issuer's initial public offering of Class A common stock (the "Offering") without payment of further consideration. The shares have no expiration date. F7 · ownership.nature: The reported security is directly held by Hummingbird Ventures III CommV. F8 · ownership.nature: Humming Bird Ventures Management NV is the managing member of Hummingbird Opportunity Fund II CommV, Hummingbird Ventures III CommV, Hummingbird Dragons CommV, Hummingbird Collective CommV, and HB&Q NV (HB&Q COMPARTMENT III) (the Hummingbird Funds) and, as a result, may be deemed to beneficially own shares held by the Hummingbird Funds. Mr. Ileri, Barend Van den Brande, and Lukas Decoster are partners of Hummingbird Ventures Management NV and may be deemed to have shared voting and investment power over the shares held by the Hummingbird Funds. The Reporting Persons disclaim beneficial ownership of these shares except to the extent of their pecuniary interests therein. Read SEC document |
| November 07, 2025 Filed Jan 21, 2026 00:27 UTC | BillionToOne, Inc. BLLN · Entity 3992 | ConversionCommon Stock | 2,451,665 | Not disclosed | Not disclosed |
DisclosureSEC source: 0001104659-26-005172 · tm2531914-3_4seq1.xml · nonDerivative · entry 4 Humming Bird Ventures Management NV · CIK 0002099044 · 10% owner Hummingbird Opportunity Fund II CommV · CIK 0002099049 · 10% owner Hummingbird Ventures III CommV · CIK 0002099047 · 10% owner Hummingbird Dragons CommV · CIK 0002099040 · 10% owner Hummingbird Collective CommV · CIK 0002099041 · 10% owner HB&Q NV (HB&Q COMPARTMENT III) · CIK 0002099035 · 10% owner Van den Brande Barend · CIK 0002099027 · 10% owner Decoster Lukas · CIK 0002099021 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · See Footnotes Disclosed balance after: 2,631,664 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 total represents shares received upon conversion of shares of Series A-1 Convertible Preferred Stock, Series A-2 Convertible Preferred Stock, Series A-6 Convertible Preferred Stock, Series B-1 Convertible Preferred Stock, Series B-2 Convertible Preferred Stock, Series C Convertible Preferred Stock and/or Series D Convertible Preferred Stock. F2 · kind: The reported security converted into the Issuer's Common Stock on a one-for-one basis automatically immediately prior to the closing of the Issuer's initial public offering of Class A common stock (the "Offering") without payment of further consideration. The shares have no expiration date. F2 · price: The reported security converted into the Issuer's Common Stock on a one-for-one basis automatically immediately prior to the closing of the Issuer's initial public offering of Class A common stock (the "Offering") without payment of further consideration. The shares have no expiration date. F6 · ownership.nature: The reported security is directly held by Hummingbird Opportunity Fund II CommV. F8 · ownership.nature: Humming Bird Ventures Management NV is the managing member of Hummingbird Opportunity Fund II CommV, Hummingbird Ventures III CommV, Hummingbird Dragons CommV, Hummingbird Collective CommV, and HB&Q NV (HB&Q COMPARTMENT III) (the Hummingbird Funds) and, as a result, may be deemed to beneficially own shares held by the Hummingbird Funds. Mr. Ileri, Barend Van den Brande, and Lukas Decoster are partners of Hummingbird Ventures Management NV and may be deemed to have shared voting and investment power over the shares held by the Hummingbird Funds. The Reporting Persons disclaim beneficial ownership of these shares except to the extent of their pecuniary interests therein. Read SEC document |
| November 07, 2025 Filed Jan 21, 2026 00:27 UTC | BillionToOne, Inc. BLLN · Entity 3992 | ConversionCommon Stock | 2,015,118 | Not disclosed | Not disclosed |
DisclosureSEC source: 0001104659-26-005172 · tm2531914-3_4seq1.xml · nonDerivative · entry 3 Humming Bird Ventures Management NV · CIK 0002099044 · 10% owner Hummingbird Opportunity Fund II CommV · CIK 0002099049 · 10% owner Hummingbird Ventures III CommV · CIK 0002099047 · 10% owner Hummingbird Dragons CommV · CIK 0002099040 · 10% owner Hummingbird Collective CommV · CIK 0002099041 · 10% owner HB&Q NV (HB&Q COMPARTMENT III) · CIK 0002099035 · 10% owner Van den Brande Barend · CIK 0002099027 · 10% owner Decoster Lukas · CIK 0002099021 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · See Footnotes Disclosed balance after: 2,015,118 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 total represents shares received upon conversion of shares of Series A-1 Convertible Preferred Stock, Series A-2 Convertible Preferred Stock, Series A-6 Convertible Preferred Stock, Series B-1 Convertible Preferred Stock, Series B-2 Convertible Preferred Stock, Series C Convertible Preferred Stock and/or Series D Convertible Preferred Stock. F2 · kind: The reported security converted into the Issuer's Common Stock on a one-for-one basis automatically immediately prior to the closing of the Issuer's initial public offering of Class A common stock (the "Offering") without payment of further consideration. The shares have no expiration date. F2 · price: The reported security converted into the Issuer's Common Stock on a one-for-one basis automatically immediately prior to the closing of the Issuer's initial public offering of Class A common stock (the "Offering") without payment of further consideration. The shares have no expiration date. F5 · ownership.nature: The reported security is directly held by Hummingbird Dragons CommV. F8 · ownership.nature: Humming Bird Ventures Management NV is the managing member of Hummingbird Opportunity Fund II CommV, Hummingbird Ventures III CommV, Hummingbird Dragons CommV, Hummingbird Collective CommV, and HB&Q NV (HB&Q COMPARTMENT III) (the Hummingbird Funds) and, as a result, may be deemed to beneficially own shares held by the Hummingbird Funds. Mr. Ileri, Barend Van den Brande, and Lukas Decoster are partners of Hummingbird Ventures Management NV and may be deemed to have shared voting and investment power over the shares held by the Hummingbird Funds. The Reporting Persons disclaim beneficial ownership of these shares except to the extent of their pecuniary interests therein. Read SEC document |
| November 07, 2025 Filed Jan 21, 2026 00:27 UTC | BillionToOne, Inc. BLLN · Entity 3992 | ConversionCommon Stock | 18,845 | Not disclosed | Not disclosed |
DisclosureSEC source: 0001104659-26-005172 · tm2531914-3_4seq1.xml · nonDerivative · entry 2 Humming Bird Ventures Management NV · CIK 0002099044 · 10% owner Hummingbird Opportunity Fund II CommV · CIK 0002099049 · 10% owner Hummingbird Ventures III CommV · CIK 0002099047 · 10% owner Hummingbird Dragons CommV · CIK 0002099040 · 10% owner Hummingbird Collective CommV · CIK 0002099041 · 10% owner HB&Q NV (HB&Q COMPARTMENT III) · CIK 0002099035 · 10% owner Van den Brande Barend · CIK 0002099027 · 10% owner Decoster Lukas · CIK 0002099021 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · See Footnotes Disclosed balance after: 18,845 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 total represents shares received upon conversion of shares of Series A-1 Convertible Preferred Stock, Series A-2 Convertible Preferred Stock, Series A-6 Convertible Preferred Stock, Series B-1 Convertible Preferred Stock, Series B-2 Convertible Preferred Stock, Series C Convertible Preferred Stock and/or Series D Convertible Preferred Stock. F2 · kind: The reported security converted into the Issuer's Common Stock on a one-for-one basis automatically immediately prior to the closing of the Issuer's initial public offering of Class A common stock (the "Offering") without payment of further consideration. The shares have no expiration date. F2 · price: The reported security converted into the Issuer's Common Stock on a one-for-one basis automatically immediately prior to the closing of the Issuer's initial public offering of Class A common stock (the "Offering") without payment of further consideration. The shares have no expiration date. F4 · ownership.nature: The reported security is directly held by Hummingbird Collective CommV. F8 · ownership.nature: Humming Bird Ventures Management NV is the managing member of Hummingbird Opportunity Fund II CommV, Hummingbird Ventures III CommV, Hummingbird Dragons CommV, Hummingbird Collective CommV, and HB&Q NV (HB&Q COMPARTMENT III) (the Hummingbird Funds) and, as a result, may be deemed to beneficially own shares held by the Hummingbird Funds. Mr. Ileri, Barend Van den Brande, and Lukas Decoster are partners of Hummingbird Ventures Management NV and may be deemed to have shared voting and investment power over the shares held by the Hummingbird Funds. The Reporting Persons disclaim beneficial ownership of these shares except to the extent of their pecuniary interests therein. Read SEC document |
| November 07, 2025 Filed Jan 21, 2026 00:27 UTC | BillionToOne, Inc. BLLN · Entity 3992 | ConversionCommon Stock | 640,727 | Not disclosed | Not disclosed |
DisclosureSEC source: 0001104659-26-005172 · tm2531914-3_4seq1.xml · nonDerivative · entry 1 Humming Bird Ventures Management NV · CIK 0002099044 · 10% owner Hummingbird Opportunity Fund II CommV · CIK 0002099049 · 10% owner Hummingbird Ventures III CommV · CIK 0002099047 · 10% owner Hummingbird Dragons CommV · CIK 0002099040 · 10% owner Hummingbird Collective CommV · CIK 0002099041 · 10% owner HB&Q NV (HB&Q COMPARTMENT III) · CIK 0002099035 · 10% owner Van den Brande Barend · CIK 0002099027 · 10% owner Decoster Lukas · CIK 0002099021 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · See Footnotes Disclosed balance after: 640,727 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 total represents shares received upon conversion of shares of Series A-1 Convertible Preferred Stock, Series A-2 Convertible Preferred Stock, Series A-6 Convertible Preferred Stock, Series B-1 Convertible Preferred Stock, Series B-2 Convertible Preferred Stock, Series C Convertible Preferred Stock and/or Series D Convertible Preferred Stock. F2 · kind: The reported security converted into the Issuer's Common Stock on a one-for-one basis automatically immediately prior to the closing of the Issuer's initial public offering of Class A common stock (the "Offering") without payment of further consideration. The shares have no expiration date. F2 · price: The reported security converted into the Issuer's Common Stock on a one-for-one basis automatically immediately prior to the closing of the Issuer's initial public offering of Class A common stock (the "Offering") without payment of further consideration. The shares have no expiration date. F3 · ownership.nature: The reported security is directly held by HB&Q NV (HB&Q COMPARTMENT III). F8 · ownership.nature: Humming Bird Ventures Management NV is the managing member of Hummingbird Opportunity Fund II CommV, Hummingbird Ventures III CommV, Hummingbird Dragons CommV, Hummingbird Collective CommV, and HB&Q NV (HB&Q COMPARTMENT III) (the Hummingbird Funds) and, as a result, may be deemed to beneficially own shares held by the Hummingbird Funds. Mr. Ileri, Barend Van den Brande, and Lukas Decoster are partners of Hummingbird Ventures Management NV and may be deemed to have shared voting and investment power over the shares held by the Hummingbird Funds. The Reporting Persons disclaim beneficial ownership of these shares except to the extent of their pecuniary interests therein. 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.