Decoster Lukas — SEC Form 4 filings
SEC reporting owner CIK 2099021. 1 Form 4 filing on record with FilingPulse; latest filed 2026-01-20.
Transaction summary — filings shown
Covers all 1 filing on record, filed 2026-01-20 to 2026-01-20. Counts and totals are arithmetic on values as filed — descriptive data, not a recommendation.
- Open-market purchases (code P, non-derivative): none reported.
- Open-market sales (code S, non-derivative): none reported.
- Other reported legs (grants, option exercises, tax withholding, gifts, derivative-security transactions, …): 25.
By issuer — same filings
Open-market purchase/sale legs on non-derivative securities, grouped by issuer. Role is as filed on the newest filing for that issuer. Dollar totals cover priced legs only (shares × price as filed). Ordered by priced transaction value, largest first.
| Issuer | Role (as filed) | Filings | Purchases (P) | Sales (S) | Other legs |
|---|---|---|---|---|---|
| BillionToOne, Inc. (BLLN) | 10% owner | 1 | — | — | 25 |
Form 4 filings — Decoster Lukas
| Filed | Form | Issuer | Reported transactions | Source |
|---|---|---|---|---|
| 2026-01-20 | 4 | BillionToOne, Inc. (BLLN) jointly with Humming Bird Ventures Management NV, Hummingbird Opportunity Fund II CommV, Hummingbird Ventures III CommV, Hummingbird Dragons CommV, Hummingbird Collective CommV, HB&Q NV (HB&Q COMPARTMENT III), Van den Brande Barend | Conversion (C): 640,727 · Conversion (C): 18,845 · Conversion (C): 2,015,118 · Conversion (C): 2,451,665 · Conversion (C): 2,580,833 · Other (J): 640,727 · +19 more | EDGAR |
FilingPulse's Form 4 archive currently extends back to 2024-01-11 and is expanding backward through EDGAR history — earlier filings by this insider may not be indexed yet. Names and roles are shown as filed.
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