Butterfly Network director proposes $2.23M share sale

Available on EDGAR 11/13/2026 - 05:17 PM EST Accepted by SEC EDGAR 11/13/2026 - 05:16 PM EST Learn about SEC filing dates

Rhea-AI Filing Summary

Butterfly Network, Inc. (BFLY) director Jonathan Rothberg filed a notice covering a proposed sale of 359,382 Class A common shares, with an approximate sale date of November 13, 2026. The notice lists an aggregate market value of $2,230,000 and 246,000,000 shares outstanding. Jefferies LLC is listed as the broker.

The notice states that the shares were acquired in a private purchase from Butterfly Network, Inc. on August 31, 2014, with cash payment. It lists August 14, 2026 as the date of plan adoption or instruction, if relying on Rule 10b5-1. The notice describes a proposed sale; it does not establish that the sale was completed.

Key Figures

Proposed shares for sale: 359,382 shares Aggregate market value: $2,230,000 Shares outstanding: 246,000,000 shares +3 more

6 metrics

Proposed shares for sale 359,382 shares Class A common shares

Aggregate market value $2,230,000 Proposed sale

Shares outstanding 246,000,000 shares Issuer share count listed alongside the proposed sale

Approximate sale date November 13, 2026 Proposed sale

Plan adoption or instruction date August 14, 2026 Listed if relying on Rule 10b5-1

Acquisition date August 31, 2014 Private purchase from Butterfly Network, Inc.

Key Terms

Rule 10b5-1

1 terms

Rule 10b5-1 regulatory

"If Relying on Rule 10b5-1"

Rule 10b5-1 is a regulation that allows company insiders to buy or sell their shares at predetermined times, even if they have access to non-public information. It acts like setting a schedule in advance for transactions, helping prevent accusations of unfair trading. This rule provides a way for insiders to plan trades transparently, giving investors confidence that these transactions are not based on hidden information.

FAQ

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

How many BFLY shares is director Jonathan Rothberg proposing to sell?

Jonathan Rothberg's notice covers a proposed sale of 359,382 Class A common shares, with an aggregate market value of $2,230,000 and an approximate sale date of November 13, 2026.

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

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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	0001076352
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	Butterfly Network, Inc.
SEC File Number	001-39292
Address of Issuer	1600 DISTRICT AVENUE BURLINGTON MASSACHUSETTS 01803
Phone	781-557-4800
Name of Person for Whose Account the Securities are To Be Sold	ROTHBERG JONATHAN M
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	Director

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 Common	Jefferies LLC 520 Madison Avenue New York NY 10022	359382	2230000.00	246000000	11/13/2026	NYSE

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 *
Common	08/31/2014	Private Purchase from Company	Butterfly Network Inc.			359382	08/31/2014	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

Nothing to Report

144: Remarks and Signature

Remarks
Date of Notice	11/13/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	08/14/2026
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	Jonathan Rothberg
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)