Butterfly Network director buys 185,261 shares at $3.083

Butterfly Network, Inc. reported that one of its directors bought 185,261 shares of Class A common stock on December 15, 2025 in an open-market purchase.

Rhea-AI Filing Summary

Butterfly Network, Inc. reported that one of its directors bought 185,261 shares of Class A common stock on December 15, 2025 in an open-market purchase. The shares were acquired at a weighted average price of $3.083 per share through The Phanstiel Trust u/a/d 2/5/02, which now holds 185,261 shares indirectly for the reporting person. Separately, the director also holds 365,505 shares of Class A common stock directly.

Insider Trade Summary

Net Buyer: 185,261 shares

Net Buy 2 txns

Insider Phanstiel S. Louise

Role Director

Bought 185,261 shs ($571K)

Type	Security	Shares	Price	Value
Purchase	Class A Common Stock	185,261	$3.083	$571K
holding	Class A Common Stock	--	--	--

Holdings After Transaction: Class A Common Stock — 185,261 shares (Indirect, By The Phanstiel Trust u/a/d 2/5/02); Class A Common Stock — 365,505 shares (Direct)

Footnotes (1)

1. F1. Represents the weighted average purchase price per share. The shares were purchased at prices ranging from $3.015 to $3.15 per share. Full information regarding the number of shares purchased 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.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transaction did Butterfly Network (BFLY) report in this filing?

The filing shows that a director of Butterfly Network, Inc. reported an open-market purchase of Class A common stock on December 15, 2025.

How many Butterfly Network (BFLY) shares did the director purchase and at what price?

The director purchased 185,261 shares of Butterfly Network Class A common stock at a weighted average price of $3.083 per share.

Through what entity were the Butterfly Network (BFLY) shares acquired?

The 185,261 shares were acquired indirectly through The Phanstiel Trust u/a/d 2/5/02, which holds the shares for the reporting person.

How many Butterfly Network shares does the reporting person own after the transaction?

After the reported transaction, the reporting person beneficially owns 185,261 shares indirectly through the trust and 365,505 shares directly of Butterfly Network Class A common stock.

Was this Butterfly Network (BFLY) insider filing made by one or multiple reporting persons?

The document indicates that the Form was filed by one reporting person, not by a group.

What does the price range disclosure in the Butterfly Network (BFLY) Form 4 mean?

The note explains that the $3.083 figure is a weighted average price, with individual trades executed between $3.015 and $3.15 per share.

AI-generated analysis. How Rhea-AI works. Not financial advice.

Form 4 Insider Transactions: What Each Field Means →

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Accepted by SEC EDGAR 12/17/2025 - 04:10 PM Learn about SEC filing dates

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).

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^*

Phanstiel S. Louise

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

3. Date of Earliest Transaction (Month/Day/Year)
12/15/2025

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	12/15/2025		P		185,261	A	$3.083(1)	185,261	I	By The Phanstiel Trust u/a/d 2/5/02
Class A Common Stock								365,505	D

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. Represents the weighted average purchase price per share. The shares were purchased at prices ranging from $3.015 to $3.15 per share. Full information regarding the number of shares purchased 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.

Remarks:

Exhibit 24 - Power of Attorney

	/s/ Nick Caezza, Attorney-in-Fact	12/17/2025
	** 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.