[144] Butterfly Network, Inc. SEC Filing

Rhea-AI Filing Summary

Butterfly Network insider plans additional stock sale under Rule 144. A holder of Butterfly Network common stock filed to sell 132,570 shares through broker Jefferies on the NYSE, with an aggregate market value of $408,196.00 as of the notice. The shares were originally acquired on 08/31/2014 in a private purchase from Butterfly Network Inc. paid in cash. Over the past three months, the same seller, Dr. Jonathan Rothberg, has already sold multiple blocks of Butterfly Network common stock, including 100,502 shares on 11/03/2025 for gross proceeds of $309,361.24, 1,110,579 shares on 11/24/2025 for $3,503,032.70, 674,758 shares on 11/25/2025 for $2,206,728.56, and 442,539 shares on 11/26/2025 for $1,383,598.00, as disclosed in the notice.

Insights

Equity markets and insider transactions analyst

Large Butterfly Network insider continues share sales under Rule 144.

The notice shows an insider of Butterfly Network planning to sell 132,570 common shares through Jefferies on the NYSE, with an aggregate market value of $408,196.00. These shares came from a cash-funded private purchase from Butterfly Network Inc. on 08/31/2014, indicating a long-held position being gradually sold into the market.

In addition, the same seller, Dr. Jonathan Rothberg, reports selling several sizeable blocks of common stock in the prior three months, including 1,110,579 shares on 11/24/2025 for gross proceeds of $3,503,032.70 and three other trades ranging from 100,502 to 674,758 shares. Rule 144 requires disclosure when affiliates sell restricted or large amounts of stock, so this filing mainly documents compliance and recent selling activity.

The information highlights ongoing liquidity events by a major holder, but it does not state any change in Butterfly Network’s operations or financial condition. The seller also represents that he does not know any undisclosed material adverse information about the company’s current or prospective operations, consistent with Rule 144 and related certification language.

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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
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	132570	408196.00	226200000	11/28/2025	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.			132570	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

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)