Humming Bird Ventures Management NV - 06 Nov 2025 SCHEDULE 13D Report for BillionToOne Class A common stock (BLLN)

Filing Manager
Humming Bird Ventures Management NV
Reporting Manager
Hummingbird Ventures Management NV
Security
BillionToOne Class A common stock
Symbol
BLLN
Shares outstanding
40,241,005 shares
Disclosed Ownership
7,887,237 shares
Ownership
20%
Form type
SCHEDULE 13D
Filing time
20 Jan 2026, 19:46:53 UTC
Date of event
06 Nov 2025
SEC
View on sec.gov

Reporting Managers (9)

Name Ownership Shares Owned sole voting power shared voting power Signature Title CIK
Hummingbird Ventures Management NV 20% 7,887,237 0 7,887,237 /s/ Lukas Decoster 49/9 CommV, represented by its permanent representative Lukas Decoster, Director 0002099044
Hummingbird Opportunity Fund II CommV 6.6% 2,631,664 0 2,631,664 /s/ Firat Ileri Hummingbird Ventures Management NV, its Manager; Firat Ileri, Permanent Representative
Hummingbird Ventures III CommV 6.4% 2,580,833 0 2,580,833 /s/ Firat Ileri Hummingbird Ventures Management NV, its Manager; Firat Ileri, Permanent Representative
Hummingbird Dragons CommV 5% 2,015,118 0 2,015,118 /s/ Firat Ileri Hummingbird Ventures Management NV, its Manager; Firat Ileri, Permanent Representative
Hummingbird Collective CommV 0.05% 18,845 0 18,845 /s/ Firat Ileri Hummingbird Ventures Management NV, its Manager; Firat Ileri, Permanent Representative
HB&Q NV 1.6% 640,727 0 640,727 /s/ Firat Ileri Hummingbird Ventures Management NV, its Manager; Firat Ileri, Permanent Representative
Firat Ileri 20% 7,887,237 0 7,887,237 /s/ Firat Ileri Firat Ileri 0002087908
Barend Van den Brande 20% 7,887,237 0 7,887,237 /s/ Barend Van den Brande Barend Van den Brande
Lukas Decoster 20% 7,887,237 0 7,887,237 /s/ Lukas Decoster Lukas Decoster