[Form 4] Butterfly Network, Inc. Insider Trading Activity

Rhea-AI Filing Summary

Butterfly Network (BFLY) reported an insider transaction by Jonathan M. Rothberg, Ph.D., a Director and 10% owner. On 11/03/2025, he sold 100,502 shares of Class A common stock at a weighted average price of $3.078, with sale prices ranging from $3.07 to $3.095. The trade was made under a Rule 10b5-1 trading plan adopted on March 5, 2025.

Following the transaction, 1,140,007 Class A shares were beneficially owned indirectly through EJR TR, LLC. Additional holdings are reported across several entities, and Dr. Rothberg disclaims beneficial ownership except to the extent of his pecuniary interest.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

X

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

ROTHBERG JONATHAN M

(Last) (First) (Middle)

C/O BUTTERFLY NETWORK, INC.

1600 DISTRICT AVENUE

(Street)

BURLINGTON MA 01803

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Butterfly Network, Inc. [ BFLY ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director	X	10% Owner
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
11/03/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Class A Common Stock	11/03/2025		S(1)		100,502	D	$3.078(2)	1,140,007	I	By EJR TR, LLC(3)
Class A Common Stock								2,880,252	D
Class A Common Stock								1,240,509	I	By NVR TR, LLC(3)
Class A Common Stock								1,240,509	I	By JNR TR, LLC(3)
Class A Common Stock								1,240,509	I	By JAR TR, LLC(3)
Class A Common Stock								1,240,509	I	By GBR TR, LLC(3)
Class A Common Stock								726,696	I	By Bonnie E Gould Rothberg MD(3)
Class B Common Stock								9,716,596	I	By 4C Holdings I, LLC(3)
Class B Common Stock								2,621,701	I	By 4C Holdings II, LLC(3)
Class B Common Stock								2,621,701	I	By 4C Holdings III, LLC(3)
Class B Common Stock								2,621,701	I	By 4C Holdings IV, LLC(3)
Class B Common Stock								8,845,238	I	By 4C Holdings V, LLC(3)

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. The transaction reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 5, 2025.

2. Represents the weighted average sales price per share. The shares sold at prices ranging from $3.07 to $3.095 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange Commission, the Issuer, or a security holder of the Issuer.

3. Dr. Rothberg is the Manager of 4C Holdings I, LLC, 4C Holdings II, LLC, 4C Holdings III, LLC, 4C Holdings IV, LLC, 4C Holdings V, LLC, NVR TR, LLC, JNR TR, LLC, JAR TR, LLC, GBR TR, LLC and EJR TR, LLC, and is the spouse of Bonnie E Gould Rothberg MD. Dr. Rothberg disclaims beneficial ownership of the securities held by these persons and entities except to the extent of his pecuniary interest therein.

	/s/ Michael Fantozzi, Attorney-in-Fact for Jonathan M. Rothberg, Ph.D.	11/05/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What insider transaction did BFLY disclose?

Jonathan M. Rothberg, Ph.D., sold 100,502 Class A shares on 11/03/2025.

At what price were the BFLY shares sold?

The weighted average sale price was $3.078, with trades between $3.07 and $3.095.

Was the sale under a Rule 10b5-1 plan?

Yes. The sale was made pursuant to a Rule 10b5-1 trading plan adopted on March 5, 2025.

What is the insider’s relationship to Butterfly Network (BFLY)?

He is a Director and a 10% Owner.

How many shares did the insider report owning after the trade via EJR TR, LLC?

He reported 1,140,007 Class A shares indirectly through EJR TR, LLC.

Are there other holdings noted for the insider?

Yes. Additional Class A and Class B holdings are listed across multiple entities, with a beneficial ownership disclaimer.