Butterfly Network officer plans $101K share sale

Butterfly Network officer Megan Carlson filed a Rule 144 notice to sell 13,804 vested Class A shares, partly to cover tax obligations.

Rhea-AI Filing Summary

Butterfly Network, Inc. (BFLY) reported that officer Megan Carlson has filed a Rule 144 notice covering the proposed sale of 13,804 Class A shares of common stock through Fidelity Brokerage Services LLC, relating to restricted stock vesting on September 3, 2026, with part of the sale intended to cover related tax obligations.

The notice cites an approximate market value of $100,792.67 for the shares to be sold and states that 244,858,246 Class A shares were outstanding as of September 4, 2026; this is a baseline figure, not the amount being sold. In the prior three months, Carlson reported sales of 41,303 shares for $328,916.44 on July 2, 2026 and 68,852 shares for $541,405.86 on July 31, 2026.

Key Figures

Shares to be sold: 13,804 shares Approximate market value of shares to be sold: $100,792.67 Shares outstanding: 244,858,246 shares +2 more

5 metrics

Shares to be sold 13,804 shares Class A common stock covered by Megan Carlson’s Rule 144 notice

Approximate market value of shares to be sold $100,792.67 Estimated value of 13,804 Class A shares in the Rule 144 notice

Shares outstanding 244,858,246 shares Class A shares outstanding as of September 4, 2026

Prior sale on July 2, 2026 41,303 shares for $328,916.44 Class A shares sold by Megan Carlson in the prior three months

Prior sale on July 31, 2026 68,852 shares for $541,405.86 Class A shares sold by Megan Carlson in the prior three months

Key Terms

Rule 144, restricted stock vesting, vested 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 | 09/03/2026 | 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.

vested equity award distribution financial

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

attorney-in-fact regulatory

"as attorney-in-fact for Megan Carlson"

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 Rule 144 sale has been filed for Butterfly Network, Inc. (BFLY)?

Officer Megan Carlson filed a Rule 144 notice to sell 13,804 Class A shares of Butterfly Network, Inc., relating to restricted stock vesting on September 3, 2026, to be sold through Fidelity Brokerage Services LLC.

What is the approximate market value of the BFLY shares covered by this Rule 144 notice?

The Rule 144 notice states an approximate market value of $100,792.67 for the 13,804 Class A shares of Butterfly Network, Inc. proposed to be sold.

How many Butterfly Network (BFLY) shares were outstanding as of early September 2026?

The notice reports that 244,858,246 Class A shares of Butterfly Network, Inc. were outstanding as of September 4, 2026; this is a company-wide share count, not the amount being sold.

What BFLY share sales did Megan Carlson report in the past three months?

Megan Carlson reported selling 41,303 Class A shares for $328,916.44 on July 2, 2026 and 68,852 Class A shares for $541,405.86 on July 31, 2026.

Why does the Butterfly Network (BFLY) Rule 144 filing mention tax obligations?

The remarks state that the sale includes an amount necessary to cover a tax obligation resulting from the settlement of a vested equity award distribution related to the restricted stock vesting.

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

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Available on EDGAR 09/04/2026 - 03:30 PM Accepted by SEC EDGAR 09/04/2026 - 03:29 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	0002080055
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	Carlson Megan
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	13804	100792.67	244858246	09/04/2026	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	09/03/2026	Restricted Stock Vesting	Issuer			13804	09/03/2026	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
Megan Carlson 1600 District Avenue Burlington MA 01803	Class A	07/02/2026	41303	328916.44
Megan Carlson 1600 District Avenue Burlington MA 01803	Class A	07/31/2026	68852	541405.86

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	09/04/2026
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/ Daniel Tucci, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Megan Carlson
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)