Butterfly Network (BFLY) holder files Rule 144 to sell 123,354 common shares

Rhea-AI Filing Summary

Butterfly Network Inc. has a shareholder filing a notice under Rule 144 to sell restricted common stock. The filing covers 123,354 shares of common stock to be sold through Jefferies on the NYSE, with an approximate sale date of December 11, 2025. The issuer reports 226,200,000 common shares outstanding.

The shares to be sold were originally acquired on August 31, 2014 in a private cash purchase from Butterfly Network Inc. Over the past three months, the same seller has reported multiple open-market sales of Butterfly Network common stock, including 1,110,579 shares on November 24, 2025 for gross proceeds of 3,503,032.70 and 769,327 shares on December 8, 2025 for gross proceeds of 2,517,776.00.

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

144: Issuer Information

Name of Issuer

SEC File Number

Address of Issuer

Phone

Name of Person for Whose Account the Securities are To Be Sold

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

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
Common	Jefferies 520 Madison Ave New York NY 10022	123354	380127.00	226200000	12/11/2025	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 the Company	Butterfly Network Inc.			123354	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

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 NY 06437	Common	11/03/2025	100502	309361.24
Dr. Jonathan Rothberg 530 Old Whitefield St Guilford CT 06437	Common	11/24/2025	1110579	3503032.70
Dr. Jonathan Rothberg 530 Old Whitefield St Guilford CT 06437	Common	11/25/2025	674758	2206728.56
Dr. Jonathan Rothberg 530 Old Whitefield St Guilford CT 06437	Common	11/26/2025	442539	1383598.00
Dr. Jonathan Rothberg 530 Old Whitefield St Guilford CT 06437	Common	11/28/2025	132570	408196.00
Dr. Jonathan Rothberg 530 Old Whitefield St Guilford CT 06437	Common	12/04/2025	64198	197473.00
Dr. Jonathan Rothberg 530 Old Whitefield St Guilford CT 06437	Common	12/05/2025	37598	115591.00
Dr. Jonathan Rothberg 530 Old Whitefield St Guilford CT 06437	Common	12/08/2025	769327	2517776.00
Dr. Jonathan Rothberg 530 Old Whitefield St Guilford CT 06437	Common	12/09/2025	176070	546767.00
Dr. Jonathan Rothberg 530 Old Whitefield St Guilford CT 06437	Common	12/10/2025	288918	905237.00

144: Remarks and Signature

Remarks

Date of Notice

Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1

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

ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)

FAQ

What does this Form 144 filing mean for Butterfly Network (BFLY)?

This Form 144 shows that a shareholder of Butterfly Network Inc. (BFLY) has given notice of intent to sell 123,354 shares of common stock under Rule 144. It is a disclosure of a planned sale of restricted or controlled securities, not a new issuance by the company.

How many Butterfly Network (BFLY) shares are covered by the new planned sale?

The notice covers 123,354 shares of Butterfly Network common stock to be sold through Jefferies on the NYSE, with an approximate sale date of December 11, 2025.

How many Butterfly Network (BFLY) shares are outstanding according to this filing?

The filing reports that 226,200,000 shares of Butterfly Network common stock were outstanding at the time referenced. This provides a baseline for understanding the scale of the planned sale.

When and how were the Butterfly Network (BFLY) shares being sold under Rule 144 acquired?

The 123,354 shares covered by the notice were acquired on August 31, 2014 in a private cash purchase from Butterfly Network Inc.. The transaction is listed as a private purchase from the company with cash as the form of payment.

What prior sales of Butterfly Network (BFLY) stock does this Form 144 disclose?

Over the prior three months, the seller, Dr. Jonathan Rothberg, reported multiple sales of Butterfly Network common stock. Examples include 1,110,579 shares on November 24, 2025 for gross proceeds of 3,503,032.70 and 769,327 shares on December 8, 2025 for gross proceeds of 2,517,776.00, along with several smaller transactions in November and December 2025.

Which broker is handling the planned Rule 144 sale for Butterfly Network (BFLY) shares?

The planned sale of 123,354 Butterfly Network common shares is listed as being handled by Jefferies, located at 520 Madison Ave, New York, NY 10022, with the NYSE named as the securities exchange.