---
schema_version: "secwatch.filing_event.v1"
accession: "0002070849-26-000013"
form_type: "8-K"
ticker: "BLLN"
cik: "0002070849"
company_name: "BillionToOne, Inc."
filed_at: "2026-03-04T23:59:59+00:00"
generated_at: "2026-05-15T21:54:07.022039+00:00"
event_type: "earnings"
sentiment: "positive"
materiality_score: 0.8
calibrated_materiality_score: 0.8
confidence: "high"
source: SEC EDGAR
---

# BillionToOne Q4 rev $96.1M (+113% YoY); net income $4.4M; raises FY26 guidance

## Summary
- Q4 revenue $96.1M (+113% YoY); net income $4.4M ($0.11 diluted) vs loss of $11.5M.
- FY2025 revenue $305.1M (+100%); operating income $16.0M vs loss of $47.1M in 2024.
- Raised FY2026 revenue guidance to $430-$445M (41-46% growth) from prior $415-$430M.
- Gross margin improved to 71% in Q4 (from 57%) and 68% for FY (from 53%).
- Launched new prenatal (RBC/platelet NIPT) and oncology (Northstar PGx/CH) tests in Q1 2026.

## SEC filing metadata
- accession: 0002070849-26-000013
- form_type: 8-K
- ticker: BLLN
- cik: 0002070849
- company_name: BillionToOne, Inc.
- filed_at: 2026-03-04T23:59:59+00:00
- event_type: earnings
- sentiment: positive
- materiality_score: 0.8
- calibrated_materiality_score: 0.8
- confidence: high
- sec_items: 2.02, 5.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/2070849/000207084926000013/0002070849-26-000013-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/2070849/000207084926000013/blln-20260304.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0002070849-26-000013
- JSON: https://secwatch.observer/filing/0002070849-26-000013.json
- Plain text: https://secwatch.observer/filing/0002070849-26-000013.txt

## Key facts
- Earnings Releases
  BillionToOne, Inc. updated its the fourth quarter ended December 31, 2025 guidance (raised).
  - Period: the fourth quarter ended December 31, 2025
  - Guidance: raised
  - Result: reported results
  source text: On March 4, 2026 , BillionToOne, Inc. (the “Company”) issued a press release announcing financial results for the quarter and year ended December 31, 2025.
  evidence_url: https://www.sec.gov/Archives/edgar/data/2070849/000207084926000013/0002070849-26-000013-index.htm
- Earnings Releases
  BillionToOne, Inc. updated its the year ended December 31, 2025 guidance (raised).
  - Period: the year ended December 31, 2025
  - Guidance: raised
  - Result: reported results
  source text: On March 4, 2026 , BillionToOne, Inc. (the “Company”) issued a press release announcing financial results for the quarter and year ended December 31, 2025.
  evidence_url: https://www.sec.gov/Archives/edgar/data/2070849/000207084926000013/0002070849-26-000013-index.htm

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.