BLLN affiliate files Form 144 for Class A resales

BLLN affiliate files Form 144 to report proposed resale of Class A shares.

Rhea-AI Filing Summary

BLLN affiliate files Form 144 to report proposed resale of Class A shares. The notice lists multiple blocks of Pre-IPO Class A shares dated 01/07/2020, 05/05/2020, and 07/03/2020 totaling discrete lots of 6,582, 3,200, and 800 shares respectively. The filing also discloses a sale in the past three months by Nancy J. Johnson of 3,418 Class A shares for $339,347.28 on 06/08/2026.

Insights

Corporate Governance Analyst

Routine resale filing by an affiliate; past sale disclosed for an individual holder.

The submission is a Form 144 notice reporting intended resales of Class A Pre-IPO shares in specific lots dated in 2020 and a recent transaction: 3,418 shares sold for $339,347.28 on 06/08/2026. It records the broker as Fidelity Brokerage Services LLC.

These filings are administrative disclosures required for affiliate sales; cash‑flow treatment and aggregate offering mechanics are not detailed in the provided excerpt. Subsequent regulatory reports or trade executions will show actual market impact.

Key Figures

Recent sale: 3,418 shares Proceeds reported: $339,347.28 Pre-IPO lot A: 6,582 shares +3 more

6 metrics

Recent sale 3,418 shares sale on 06/08/2026 by Nancy J. Johnson

Proceeds reported $339,347.28 consideration from 06/08/2026 sale

Pre-IPO lot A 6,582 shares dated 01/07/2020, Class A Pre-IPO shares

Pre-IPO lot B 3,200 shares dated 05/05/2020, Class A Pre-IPO shares

Pre-IPO lot C 800 shares dated 07/03/2020, Class A Pre-IPO shares

Broker Fidelity Brokerage Services LLC listed as broker-dealer on the form

Key Terms

Form 144, Pre-IPO Shares, Class A

3 terms

Form 144 regulatory

"144: Securities Sold During The Past 3 Months"

Form 144 is a document that investors must file with the government when they plan to sell a large number of shares of a company's stock. It helps ensure transparency so everyone knows how many shares are being sold and when, which can impact the stock's price.

Pre-IPO Shares market

"Class A | 01/07/2020 | Pre-IPO Shares"

Class A market

"Class A | Fidelity Brokerage Services LLC"

Class A denotes a specific group of a company’s shares that carry a particular set of rights—most commonly different voting power or dividend priority compared with other share classes. Think of it like different seats on a bus where some seats let you steer and others only ride: knowing whether a share is Class A tells investors how much influence they have over company decisions and how returns might be distributed, which affects control and value.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What does BLLN's Form 144 disclose?

It discloses proposed resales of Class A Pre-IPO shares, listing lots of 6,582; 3,200; and 800 shares dated in 2020. It also reports a recent sale of 3,418 shares for $339,347.28 on 06/08/2026.

Who executed the recent Class A sale reported in the filing?

The filing shows a sale by Nancy J. Johnson of 3,418 Class A shares on 06/08/2026 for $339,347.28, recorded in the "Securities Sold During The Past 3 Months" section.

Which broker is listed on the Form 144 for BLLN?

The broker-dealer shown is Fidelity Brokerage Services LLC at 900 Salem Street, Smithfield, RI. The entry appears alongside the securities and sale details in the notice.

Are the Pre-IPO Class A lots being registered or already sold?

The notice lists Pre-IPO Class A lots dated 01/07/2020, 05/05/2020, and 07/03/2020 with amounts 6,582; 3,200; and 800 respectively. The excerpt describes intended resale notices; actual sale timing and execution details are not provided here.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 06/09/2026 - 04:50 PM EDT Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0002087387
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	BillionToOne, Inc.
SEC File Number	001-42934
Address of Issuer	1035 O'BRIEN DRIVE MENLO PARK CALIFORNIA 94025
Phone	650-460-2551
Name of Person for Whose Account the Securities are To Be Sold	Johnson Nancy JoAnn
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Officer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Class A	Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI 02917	10582	1063192.55	41442834	06/09/2026	NASDAQ

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Class A	01/07/2020	Pre-IPO Shares	Issuer			6582	01/07/2020	Cash
Class A	05/05/2020	Pre-IPO Shares	Issuer			3200	05/05/2020	Cash
Class A	07/03/2020	Pre-IPO Shares	Issuer			800	07/03/2020	Cash

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
Nancy J. Johnson 1035 O'Brien Drive Menlo Park CA 94025	Class A	06/08/2026	3418	339347.28

144: Remarks and Signature

Remarks
Date of Notice	06/09/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	03/06/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ Gerardo Ibarra-Munoz, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Nancy J. Johnson
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)