Butterfly Network Form 144 plans sale of 5.07M shares

Butterfly Network Inc. is the subject of a Form 144 notice covering a proposed sale of up to 5,070,000 shares of Class A Common Stock, to be sold through Jefferies on the NYSE beginning on July 21, 2026.

Rhea-AI Filing Summary

Butterfly Network Inc. is the subject of a Form 144 notice covering a proposed sale of up to 5,070,000 shares of Class A Common Stock, to be sold through Jefferies on the NYSE beginning on July 21, 2026. The notice lists an aggregate market value for the proposed sale of $235,200,000.

The filing identifies prior sales of Class A shares by Dr. Jonathan Rothberg during July 2026, including 815,632 shares for $6,295,000 on July 14, 1,730,319 shares for $12,670,000 on July 15, 1,467,501 shares for $10,400,000 on July 16, 1,195,857 shares for $7,880,000 on July 17, and 1,177,276 shares for $7,790,000 on July 20.

Key Figures

Shares proposed for sale: 5,070,000 shares Aggregate market value of proposed sale: $235,200,000 Sale on July 14, 2026: 815,632 shares for $6,295,000.00 +4 more

7 metrics

Shares proposed for sale 5,070,000 shares Class A Common Stock covered by the Form 144 notice

Aggregate market value of proposed sale $235,200,000 Value associated with 5,070,000 Class A shares

Sale on July 14, 2026 815,632 shares for $6,295,000.00 Class A shares sold by Dr. Jonathan Rothberg

Sale on July 15, 2026 1,730,319 shares for $12,670,000.00 Class A shares sold by Dr. Jonathan Rothberg

Sale on July 16, 2026 1,467,501 shares for $10,400,000.00 Class A shares sold by Dr. Jonathan Rothberg

Sale on July 17, 2026 1,195,857 shares for $7,880,000.00 Class A shares sold by Dr. Jonathan Rothberg

Sale on July 20, 2026 1,177,276 shares for $7,790,000.00 Class A shares sold by Dr. Jonathan Rothberg

Key Terms

Form 144, Class A Common Stock, aggregate market value, Private Placement

4 terms

Form 144 regulatory

"Butterfly Network Inc. is the subject of a Form 144 notice covering a proposed sale"

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.

Class A Common Stock financial

"proposed sale of up to 5,070,000 shares of Class A Common Stock, to be sold"

Class A common stock is a category of a company’s shares that carries a specific set of ownership rights—most commonly defined voting power and claims on dividends—set out in the company’s charter. For investors it matters because the class determines how much influence you have over corporate decisions, the share’s likely dividend and trading behavior, and how it compares in value to other share classes, like choosing a particular seat with different privileges at the company’s decision-making table.

aggregate market value financial

"The notice lists an aggregate market value for the proposed sale of $235,200,000"

Aggregate market value is the combined price you would pay to buy all outstanding shares of a company or all companies in a group at current market prices — essentially the sum of each stock’s market capitalization. It matters to investors because it shows the overall size and weight of an investment or sector (like the total cost to buy every piece of a puzzle), helps compare scale across companies or markets, and influences index composition and risk exposure.

Private Placement financial

"It references Class A securities issued via Private Placement on May 31, 2012"

A private placement is a sale of securities directly to a selected group of investors, typically institutions or accredited investors, instead of through a public offering. It lets a company raise money faster and with fewer regulatory steps; for existing shareholders it matters because the newly issued shares, often sold at a discount, increase the share count and can dilute their ownership.

FAQ

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

What does Butterfly Network (BFLY) report in this Form 144 filing?

The filing reports a proposed sale of up to 5,070,000 shares of Butterfly Network Class A Common Stock, with an indicated aggregate market value of $235,200,000, to be sold through Jefferies on the NYSE.

How many Butterfly Network (BFLY) shares are proposed to be sold and through whom?

The notice covers up to 5,070,000 shares of Class A Common Stock, with Jefferies listed as the broker. The securities are expected to be sold on the NYSE beginning July 21, 2026.

What recent Butterfly Network (BFLY) share sales by Dr. Jonathan Rothberg are listed?

The document lists July 2026 sales by Dr. Jonathan Rothberg, including 815,632 shares for $6,295,000 on July 14 and 1,730,319 shares for $12,670,000, along with three additional transactions between July 16 and July 20.

What are the largest recent sale amounts disclosed for Butterfly Network (BFLY) shares?

Among the listed transactions, the largest is 1,730,319 shares sold for $12,670,000 on July 15, 2026. Other sizable sales include 1,467,501 shares for $10,400,000 on July 16, 2026.

On which market are the Butterfly Network (BFLY) shares in this Form 144 expected to be sold?

The proposed sale of up to 5,070,000 shares of Class A Common Stock is identified as occurring on the NYSE, with Jefferies listed as the broker handling the transaction.

Does the Butterfly Network (BFLY) Form 144 mention any earlier issuance of the securities?

Yes. It references Class A securities issued via Private Placement on May 31, 2012 by Butterfly Network Inc., which provides background on how these securities originally came to be held.

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

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Available on EDGAR 07/21/2026 - 05:00 PM Accepted by SEC EDGAR 07/21/2026 - 04:59 PM 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	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 520 Madison Ave New York NY 10022	753320	5070000.00	235200000	07/21/2026	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 *
Class A	05/31/2012	Private Placement	Butterfly Network Inc.			753320	05/31/2012	N/A

* 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
Dr. Jonathan Rothberg 530 Old Whitefield St Guilford CT 06437	Class A	07/14/2026	815632	6295000.00
Dr. Jonathan Rothberg 530 Old Whitefield St Guilford CT 06437	Class A	07/15/2026	1730319	12670000.00
Dr. Jonathan Rothberg 530 Old Whitefield St Guilford CT 06437	Class A	07/16/2026	1467501	10400000.00
Dr. Jonathan Rothberg 530 Old Whitefield St Guilford CT 06437	Class A	07/17/2026	1195857	7880000.00
Dr. Jonathan Rothberg 530 Old Whitefield St Guilford CT 06437	Class A	07/20/2026	1177276	7790000.00

144: Remarks and Signature

Remarks
Date of Notice	07/21/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	03/13/2026
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)