Butterfly Network insider plans 1,709-share sale

Nicholas M. Caezza filed a Rule 144 notice for a modest sale of Butterfly Network Class A shares tied to restricted stock vesting and related tax obligations.

Rhea-AI Filing Summary

Butterfly Network, Inc. (BFLY) is the issuer for which Nicholas M. Caezza has filed a Rule 144 notice covering planned sales of Class A common stock. The notice reports a proposed sale of 1,709 Class A shares, arising from restricted stock vesting on September 1, 2026, with a comment that part of the sale will cover related tax obligations.

The filing also lists Caezza’s sales over the prior three months: 1,733 Class A shares on June 2, 2026 and 10,000 Class A shares on August 11, 2026. Fidelity Brokerage Services LLC is identified as broker and attorney-in-fact for Caezza in connection with this notice.

Key Figures

Shares to be sold: 1,709 Class A shares Prior sale June 2, 2026: 1,733 Class A shares for $7,831.25 Prior sale August 11, 2026: 10,000 Class A shares for $97,500.00 +2 more

5 metrics

Shares to be sold 1,709 Class A shares Proposed sale under Rule 144 associated with restricted stock vesting on September 1, 2026

Prior sale June 2, 2026 1,733 Class A shares for $7,831.25 Reported as securities sold during the past three months

Prior sale August 11, 2026 10,000 Class A shares for $97,500.00 Reported as securities sold during the past three months

Date of Notice September 2, 2026 Date the Rule 144 notice was signed and filed

Broker Fidelity Brokerage Services LLC Identified broker for the Class A shares of Butterfly Network, Inc.

Key Terms

Rule 144, Restricted Stock Vesting, equity award distribution, attorney-in-fact

4 terms

Rule 144 regulatory

"See the definition of "person" in paragraph (a) of Rule 144."

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

Restricted Stock Vesting financial

"Class A | 09/01/2026 | Restricted Stock Vesting | Issuer"

Restricted stock vesting is the timetable and conditions under which shares granted to employees or insiders become fully owned and can be sold, typically requiring continued work or meeting performance goals. It matters to investors because large blocks of shares can become tradable at once, which can change share supply and price, and because vesting aligns insiders’ incentives with the company’s long‑term performance—think of it like a timed unlock that both rewards and locks in key people.

equity award distribution financial

"resulting from the settlement of a vested equity award distribution."

attorney-in-fact regulatory

"as attorney-in-fact for Nicholas M. Caezza"

An attorney-in-fact is the person or entity given legal authority through a power of attorney to act on behalf of another for specific tasks, such as signing documents, voting shares, or handling transactions. For investors, this matters because it lets a trusted representative make timely decisions or complete paperwork when the owner cannot, much like handing keys to someone to run errands on your behalf—so checks on scope and limits of that authority are important.

FAQ

What does the Form 144 filing disclose for Butterfly Network, Inc. (BFLY)?

It discloses that Nicholas M. Caezza has filed a Rule 144 notice to sell 1,709 Class A shares of Butterfly Network, Inc., associated with restricted stock vesting on September 1, 2026, with part of the sale intended to cover a related tax obligation.

How many Butterfly Network (BFLY) shares is Nicholas M. Caezza planning to sell under this notice?

The notice covers a proposed sale of 1,709 Class A shares of Butterfly Network, Inc. The filing states these shares were acquired through restricted stock vesting on September 1, 2026 and will be sold in part to address tax obligations from that vesting.

What Butterfly Network (BFLY) share sales has Nicholas M. Caezza made in the past three months?

The filing lists two prior sales of Class A shares: 1,733 shares sold on June 2, 2026 for $7,831.25, and 10,000 shares sold on August 11, 2026 for $97,500.00. These are reported as sales during the past three months under Rule 144.

Who is acting as broker and attorney-in-fact in the Butterfly Network (BFLY) Form 144?

The filing identifies Fidelity Brokerage Services LLC as the broker for the Class A shares of Butterfly Network, Inc. The signature block shows Gary Redman signing as a duly authorized representative of Fidelity, acting as attorney-in-fact for Nicholas M. Caezza.

What is the stated reason for the planned Butterfly Network (BFLY) share sale by Nicholas M. Caezza?

A remark explains that the sale includes an amount necessary to cover a tax obligation resulting from the settlement of a vested equity award distribution. The securities to be sold are described as Class A shares from restricted stock vesting on September 1, 2026.

On which market are the Butterfly Network (BFLY) shares in this Form 144 listed?

The securities information section identifies the Class A shares involved as listed on the NYSE. The issuer is Butterfly Network, Inc., and the filing relates to its Class A common stock held for the account of Nicholas M. Caezza.

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

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Available on EDGAR 09/02/2026 - 03:45 PM Accepted by SEC EDGAR 09/02/2026 - 03:45 PM Learn about SEC filing dates

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	0002080056
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	Butterfly Network, Inc.
SEC File Number	001-39292
Address of Issuer	1600 DISTRICT AVENUE BURLINGTON MASSACHUSETTS 01803
Phone	781-557-4800
Name of Person for Whose Account the Securities are To Be Sold	Caezza Nicholas
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	Officer

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
Class A	Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI 02917	1709	13927.32	244858246	09/02/2026	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 *
Class A	09/01/2026	Restricted Stock Vesting	Issuer			1709	09/01/2026	Compensation

* 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
Nicholas M. Caezza 1600 District Avenue Burlington MA 01803	Class A	06/02/2026	1733	7831.25
Nicholas M. Caezza 1600 District Avenue Burlington MA 01803	Class A	08/11/2026	10000	97500.00

144: Remarks and Signature

Remarks	Sale includes an amount necessary to cover a tax obligation resulting from the settlement of a vested equity award distribution.
Date of Notice	09/02/2026
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	/s/ Gary Redman, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Nicholas M. Caezza
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)