[144] Butterfly Network, Inc. SEC Filing

Rhea-AI Filing Summary

Butterfly Network Inc. insider Dr. Jonathan Rothberg has filed a notice to sell 335,834 shares of common stock through broker Jefferies on the NYSE, with an aggregate market value of 1,404,525.00. The filing reports that 226,200,000 shares of common stock are outstanding.

The shares to be sold were originally acquired in a private purchase from Butterfly Network Inc. on 08/31/2014, when 176,070 shares were bought for cash. The notice also lists multiple recent sales by Dr. Rothberg over the past three months, including 1,110,579 shares sold on 11/24/2025 for gross proceeds of 3,503,032.70 and 452,729 shares sold on 01/07/2026 for 1,874,252.00. By signing, the seller represents that he is not aware of undisclosed material adverse information about the company.

Insights

Equity markets and insider-transactions analyst

Large planned and recent insider sales are disclosed, but fundamentals are not addressed.

This notice shows that Dr. Jonathan Rothberg intends to sell 335,834 shares of Butterfly Network Inc. common stock, with an indicated market value of 1,404,525.00. The filing also states that 226,200,000 shares of common stock are outstanding, providing a baseline for the company’s equity size.

The document details prior sales by the same seller over the last three months, with multiple transactions on 11/24/2025, 11/25/2025, and into 01/07/2026, each listing the number of shares sold and gross proceeds, such as 452,729 shares for 1,874,252.00 on 01/07/2026. These disclosures describe trading activity but do not provide information on revenue, earnings, or other operating metrics.

Because the content centers on planned and recent share sales rather than business performance, its significance for the company’s long‑term prospects depends on how investors interpret insider selling. The representation that the seller does not know any undisclosed material adverse information anchors this activity within the standard Rule 144 framework.

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	335834	1404525.00	226200000	01/08/2026	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.			176070	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
Dr. Jonathan Rothberg 530 Old Whitefield St Guilford CT 06437	Common	01/06/2026	351617	1416805.00
Dr. Jonathan Rothberg 530 Old Whitefield St Guilford CT 06437	Common	01/07/2026	452729	1874252.00

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)