Butterfly Network (BFLY) insider files to sell 351,617 shares under Rule 144

Rhea-AI Filing Summary

Butterfly Network Inc. insider Dr. Jonathan Rothberg has filed a notice to sell additional common shares under Rule 144. The filing covers 351,617 common shares to be sold through Jefferies LLC on the NYSE, with an aggregate market value of $1,416,805.00, while 226,200,000 common shares are outstanding. The shares were originally acquired on 08/31/2014 in a private purchase from the company, paid in cash.

The notice also lists a series of recent open-market sales by Dr. Rothberg over the past three months, including multiple transactions in November and December 2025, such as 1,110,579 common shares sold on 11/24/2025 for gross proceeds of $3,503,032.70. By signing the notice, the seller represents that he does not know of any material adverse, non-public information about Butterfly Network’s operations.

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 LLC 520 Madison Ave New York NY 10022	351617	1416805.00	226200000	01/06/2026	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 the company	Butterfly Network Inc.			351617	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 CT 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
Dr. Jonathan Rothberg 530 Old Whitefield St Guilford CT 06437	Common	12/11/2025	123354	380127.00
Dr. Jonathan Rothberg 530 Old Whitefield St Guilford CT 06437	Common	12/12/2025	193293	596270.00
Dr. Jonathan Rothberg 530 Old Whitefield St Guilford CT 06437	Common	12/15/2025	601308	1902658.00
Dr. Jonathan Rothberg 530 Old Whitefield St Guilford CT 06437	Common	12/16/2025	284986	893830.00
Dr. Jonathan Rothberg 530 Old Whitefield St Guilford CT 06437	Common	12/23/2025	44781	179424.00
Dr. Jonathan Rothberg 530 Old Whitefield St Guilford CT 06437	Common	12/24/2025	2673	10692.00
Dr. Jonathan Rothberg 530 Old Whitefield St Guilford CT 06437	Common	12/26/2025	14911	59790.00

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 the BFLY Rule 144 filing disclose about upcoming insider sales?

The notice states that Dr. Jonathan Rothberg intends to sell 351,617 Butterfly Network common shares through Jefferies LLC on the NYSE, with an aggregate market value of $1,416,805.00 and an approximate sale date of 01/06/2026.

How many Butterfly Network (BFLY) shares are currently outstanding?

The filing reports that Butterfly Network has 226,200,000 common shares outstanding in connection with this planned Rule 144 sale.

Who is selling Butterfly Network (BFLY) shares in this Rule 144 notice?

The seller identified is Dr. Jonathan Rothberg, who previously acquired the shares in a private purchase from Butterfly Network Inc. on 08/31/2014, paid in cash.

On which exchange will the Butterfly Network (BFLY) shares be sold under this notice?

The Rule 144 filing indicates that the 351,617 common shares are planned to be sold on the NYSE, with Jefferies LLC acting as broker.

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

The notice lists multiple recent sales of Butterfly Network common stock by Dr. Rothberg, including transactions such as 1,110,579 shares sold on 11/24/2025 for gross proceeds of $3,503,032.70 and several additional sales in November and December 2025.

What representation does the seller make in the Butterfly Network (BFLY) Rule 144 notice?

By signing the notice, the seller represents that he does not know any material adverse information about Butterfly Network’s current or prospective operations that has not been publicly disclosed, and is reminded that intentional misstatements or omissions may constitute federal criminal violations.