Akshay Rai - 07 Nov 2025 Form 4 Insider Report for BillionToOne, Inc.

Reporting relationship: Director
Issuer ticker: BLLN on Nasdaq
Reported as of: 07 Nov 2025
Net transaction value: +$150,000
SEC form: 4
Accepted by SEC: 12 Nov 2025, 18:06:14 UTC
Prior SEC filing: 10 Nov 2025
Next SEC filing: 12 Jun 2026
Source filing: View source filing
Reporting owner signature: /s/ Thomas P. Lynch, Attorney-in-Fact

Key filing fact

Akshay Rai filed Form 4 for BillionToOne, Inc. on 12 Nov 2025.

Key facts

This page summarizes Akshay Rai's Form 4 filing for BillionToOne, Inc..
1 reported transaction and 0 derivative rows are listed below.
Accepted by SEC: 12 Nov 2025, 18:06.

Change

Previous filing in this sequence was filed on 10 Nov 2025.
Current net transaction value: +$150,000.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0002087877 Primary reporting owner

Rai Akshay

Relationship: Director
Address: 2180 SAND HILL ROAD, STE. 100, MENLO PARK
Signature: /s/ Thomas P. Lynch, Attorney-in-Fact
Signature date: 12 Nov 2025

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

BLLN transaction

Class A Common Stock

Purchase

Transaction value: $150,000
Shares: +2,500
Change %: +23%
Price: $60.00^*
Shares after: 13,509
Date: 07 Nov 2025
Ownership: Direct

BLLN holding

Class A Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 1,784,414
Date: 07 Nov 2025
Ownership: See footnote
Footnotes: F1

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 1 footnote

Footnote F1

The reported securities are directly held by Wipro Enterprises Private Limited (Wipro), of which Mr. Rai is the nominee/investor director appointed by Wipro Enterprises Limited. Mr. Rai will not have voting or dispositive control of these securities while such securities are held by Wipro and thus disclaims beneficial ownership of such securities.