Butterfly Network CEO Devivo sells 35,790 shares

The president and CEO's sale was made under a Rule 10b5-1 trading plan adopted December 12, 2025, at prices ranging from $10.00 to $10.18 per share.

Rhea-AI Filing Summary

Butterfly Network, Inc. President & CEO Joseph Devivo sold 35,790 Class A common shares on October 6, 2026, at a weighted average price of $10.02 per share. He made the sale under a Rule 10b5-1 trading plan adopted December 12, 2025; prices ranged from $10.00 to $10.18 per share. His reported direct holdings after the sale were 7,311,930 shares.

Insider Trade Summary 10b5-1

Net Seller: 35,790 shares

Net Sell 1 txn

Insider DEVIVO JOSEPH

Role President & CEO

Sold 35,790 shs ($359K)

Type	Security	Shares	Price	Value
Sale	Class A Common Stock F1, F2	35,790	$10.02	$359K

Holdings After Transaction: Class A Common Stock — 7,311,930 shares (Direct)

Footnotes (2)

1. F1. The transaction reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 12, 2025.
2. F2. Represents the weighted average sales price per share. The shares sold at prices ranging from $10.00 to $10.18 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.

Key Figures

Shares sold: 35,790 shares Weighted average sales price: $10.02 per share Sale price range: $10.00 to $10.18 per share +1 more

4 metrics

Shares sold 35,790 shares October 6, 2026

Weighted average sales price $10.02 per share Sale on October 6, 2026

Sale price range $10.00 to $10.18 per share Shares sold on October 6, 2026

Direct holdings after sale 7,311,930 shares Following the October 6, 2026 transaction

Key Terms

Rule 10b5-1 trading plan, weighted average sales price per share, Class A Common Stock

3 terms

Rule 10b5-1 trading plan regulatory

"effected pursuant to a Rule 10b5-1 trading plan"

A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.

weighted average sales price per share financial

"Represents the weighted average sales price per share."

Class A Common Stock financial

"Class A Common Stock"

Class A common stock is a category of a company’s shares that carries a specific set of ownership rights—most commonly defined voting power and claims on dividends—set out in the company’s charter. For investors it matters because the class determines how much influence you have over corporate decisions, the share’s likely dividend and trading behavior, and how it compares in value to other share classes, like choosing a particular seat with different privileges at the company’s decision-making table.

FAQ

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

How many BFLY shares did Joseph Devivo sell, and was the sale made under a trading plan?

Joseph Devivo sold 35,790 shares on October 6, 2026, at a weighted average price of $10.02 per share. The sale was made under a Rule 10b5-1 trading plan adopted December 12, 2025, and prices ranged from $10.00 to $10.18 per share.

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

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Available on EDGAR 10/08/2026 - 05:55 PM Accepted by SEC EDGAR 10/08/2026 - 05:55 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).

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^*

DEVIVO JOSEPH

(Last) (First) (Middle)

C/O BUTTERFLY NETWORK, INC.

1600 DISTRICT AVENUE

(Street)

BURLINGTON MASSACHUSETTS 01803

(City) (State) (Zip)

UNITED STATES

(Country)

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
X	Officer (give title below)		Other (specify below)
	President & CEO

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
10/06/2026

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

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

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

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	10/06/2026		S(1)		35,790	D	$10.02(2)	7,311,930	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. The transaction reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 12, 2025.

2. Represents the weighted average sales price per share. The shares sold at prices ranging from $10.00 to $10.18 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.

	/s/ Nick Caezza, Attorney-in-Fact	10/08/2026
	** 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.
* Form 4: SEC 1474 (03-26)