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Butterfly Network (NYSE: BFLY) director sells 2.3M shares

Filing Impact
(Very High)
Filing Sentiment
(Very Negative)
Form Type
4

Rhea-AI Filing Summary

Butterfly Network, Inc. director Larry Robbins reported indirect sales of 2,297,733 shares of Class A Common Stock between August 13 and 17, 2026. The shares were sold in open-market transactions by investment entities Glenview Offshore Opportunity Master Fund, Ltd., Glenview Healthcare Master Fund, L.P., and Longview Investors LLC or its affiliates, with weighted average prices per transaction ranging from about $8.70 to $9.54. Robbins is an investment manager or managing member for these entities, may be deemed to share voting and dispositive power, and disclaims beneficial ownership beyond any pecuniary interest. A separate entry shows 390,952 shares of Class A Common Stock held directly by Robbins as of August 13, 2026.

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Insider ROBBINS LARRY
Role Director
Sold 2,297,733 shs ($20.62M)
Type Security Shares Price Value
Sale Class A Common Stock F10, F4, F5 582,500 $8.9702 $5.23M
Sale Class A Common Stock F9, F4, F5 824,700 $8.6973 $7.17M
Sale Class A Common Stock F1, F2, F3, F5 215,233 $9.5418 $2.05M
Sale Class A Common Stock F6, F7, F3, F5 500,000 $9.2355 $4.62M
Sale Class A Common Stock F8, F4, F5 175,300 $8.8604 $1.55M
holding Class A Common Stock -- -- --
Holdings After Transaction: Class A Common Stock — 2,964,187 shares (Indirect, See footnotes); Class A Common Stock — 390,952 shares (Direct)
Footnotes (10)
  1. F1. These shares of the Issuer's common stock, par value $0.0001 per share (the "Shares"), were sold by Glenview Offshore Opportunity Master Fund, Ltd. and Glenview Healthcare Master Fund, L.P.
  2. F2. This price reflects the weighted average price for open-market sales of Shares on August 13, 2026 within a $1.00 range. The actual prices for these transactions range from $9.43 to $9.575, inclusive. Mr. Robbins further undertakes to provide upon request by the Commission staff, the Issuer, or a security holder of the Issuer, full information regarding the number of Shares sold at each separate price.
  3. F3. Glenview Capital Master Fund, Ltd., Glenview Offshore Opportunity Master Fund, Ltd. and Glenview Healthcare Master Fund, L.P. (collectively, the "Glenview Investment Funds") are the record holders of these Shares. Mr. Robbins is the Founder, Portfolio Manager and CIO of Glenview Capital Management, LLC, which serves as investment manager to each of the Glenview Investment Funds. Mr. Robbins shares voting and dispositive power over the Shares held by the Glenview Investment Funds and may be deemed to beneficially own such Shares.
  4. F4. Longview Investors LLC ("Longview"), or its affiliates, is the record holder of these securities. Mr. Robbins is the managing member of Longview. Mr. Robbins shares voting and dispositive power over the securities held by Longview and may be deemed to beneficially own such securities.
  5. F5. Mr. Robbins disclaims beneficial ownership over any securities owned by Longview and the Glenview Investment Funds other than to the extent of any pecuniary interest he may have therein.
  6. F6. These Shares were sold by Glenview Offshore Opportunity Master Fund, Ltd.
  7. F7. This price reflects the weighted average price for open-market sales of Shares on August 13, 2026 within a $1.00 range. The actual prices for these transactions range from $9.035 to $9.3408, inclusive. Mr. Robbins further undertakes to provide upon request by the Commission staff, the Issuer, or a security holder of the Issuer, full information regarding the number of Shares sold at each separate price.
  8. F8. This price reflects the weighted average price for open-market sales of Shares on August 13, 2026 within a $1.00 range. The actual prices for these transactions range from $8.86 to $9.12, inclusive. Mr. Robbins further undertakes to provide upon request by the Commission staff, the Issuer, or a security holder of the Issuer, full information regarding the number of Shares sold at each separate price.
  9. F9. This price reflects the weighted average price for open-market sales of Shares on August 14, 2026 within a $1.00 range. The actual prices for these transactions range from $8.36 to $8.94, inclusive. Mr. Robbins further undertakes to provide upon request by the Commission staff, the Issuer, or a security holder of the Issuer, full information regarding the number of Shares sold at each separate price.
  10. F10. This price reflects the weighted average price for open-market sales of Shares on August 17, 2026 within a $1.00 range. The actual prices for these transactions range from $8.85 to $9.07, inclusive. Mr. Robbins further undertakes to provide upon request by the Commission staff, the Issuer, or a security holder of the Issuer, full information regarding the number of Shares sold at each separate price.
Total shares sold 2,297,733 shares Aggregate Class A Common Stock sold indirectly between August 13–17, 2026
Shares sold on August 17, 2026 582,500 shares at $8.9702 per share Indirect open-market sale of Class A Common Stock
Shares sold on August 14, 2026 824,700 shares at $8.6973 per share Indirect open-market sale of Class A Common Stock
Shares sold on August 13, 2026 (block 1) 215,233 shares at $9.5418 per share Indirect open-market sale of Class A Common Stock by Glenview funds
Shares sold on August 13, 2026 (block 2) 500,000 shares at $9.2355 per share Indirect open-market sale of Class A Common Stock by Glenview Offshore Opportunity Master Fund
Shares sold on August 13, 2026 (block 3) 175,300 shares at $8.8604 per share Indirect open-market sale of Class A Common Stock with weighted average price
Direct holdings after transactions 390,952 shares Directly held Class A Common Stock by Larry Robbins as of August 13, 2026
weighted average price financial
"This price reflects the weighted average price for open-market sales of Shares"
Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.
dispositive power financial
"Mr. Robbins shares voting and dispositive power over the Shares held"
Dispositive power is the authority to decide the final outcome of an asset, legal claim, contract, or corporate action — in effect the power to dispose of or resolve something. For investors it matters because whoever holds that authority can determine who gets paid, who controls an asset or vote, and how risks and returns are allocated; think of it like holding the key that lets you lock in the winner or loser in a deal.
beneficially own financial
"may be deemed to beneficially own such Shares"
Beneficially own means having the economic rights and risks of a security—such as the right to receive dividends, sell the shares, or profit from price changes—whether or not your name appears on the official share register. Think of it like renting a car: you use it and reap the benefits even if the title lists someone else. Investors care because beneficial ownership determines who truly controls value, must be disclosed under securities rules, and can signal potential influence or trading activity that affects a stock’s price.
pecuniary interest financial
"disclaims beneficial ownership over any securities ... to the extent of any pecuniary interest"

FAQ

What insider transactions did BFLY director Larry Robbins report in this Form 4?
Larry Robbins reported indirectly selling 2,297,733 BFLY Class A shares between August 13 and 17, 2026. The sales were executed in open-market transactions through Glenview Offshore Opportunity Master Fund, Glenview Healthcare Master Fund, and Longview Investors LLC or its affiliates.

At what prices were the BFLY shares sold in Larry Robbins’ August 2026 transactions?
The reported transactions show weighted average prices around $8.70–$9.54 per share. Footnotes specify price ranges, including $9.43–$9.575, $9.035–$9.3408, $8.86–$9.12, $8.36–$8.94, and $8.85–$9.07 for the respective trading dates.

How many BFLY shares did entities associated with Larry Robbins sell on each reported date?
Entities associated with Larry Robbins sold 890,233 shares on August 13, 824,700 shares on August 14, and 582,500 shares on August 17, 2026. All transactions involved Class A Common Stock and were reported as indirect sales on behalf of those entities.

Does Larry Robbins still hold Butterfly Network (BFLY) shares after these sales?
Yes. The filing lists a direct holding of 390,952 shares of BFLY Class A Common Stock for Larry Robbins as of August 13, 2026. Indirect holdings by Glenview and Longview entities are reported separately, with Robbins disclaiming ownership beyond his pecuniary interest.

Were Larry Robbins’ August 2026 BFLY trades under a Rule 10b5-1 trading plan?
The Form 4’s Rule 10b5-1 checkbox is not marked, so the transactions are not identified as being made under a Rule 10b5-1 trading plan. The footnotes describe open-market sales with weighted average prices and detailed price ranges for each date.

Who actually sold the BFLY shares reported in Larry Robbins’ Form 4?
The shares were sold by Glenview Offshore Opportunity Master Fund, Ltd., Glenview Healthcare Master Fund, L.P., and Longview Investors LLC or its affiliates. Robbins, as investment manager or managing member, shares voting and dispositive power and may be deemed a beneficial owner subject to his disclaimer.

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Form 4 Insider Transactions: What Each Field Means →
SEC Form 4
FORM 4UNITED 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*
ROBBINS LARRY
(Last)(First)(Middle)
520 MADISON AVENUE
33RD FLOOR
(Street)
NEW YORK NEW YORK 10022
(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)
XDirector10% Owner
Officer (give title below)Other (specify below)
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
08/13/2026		6. Individual or Joint/Group Filing (Check Applicable Line)
XForm 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)
CodeVAmount(A) or (D)Price
Class A Common Stock08/13/2026S215,233(1)D$9.5418(2)12,243,530ISee footnotes(3)(5)
Class A Common Stock08/13/2026S500,000(6)D$9.2355(7)11,743,530ISee footnotes(3)(5)
Class A Common Stock08/13/2026S175,300D$8.8604(8)4,371,387ISee footnotes(4)(5)
Class A Common Stock08/14/2026S824,700D$8.6973(9)3,546,687ISee footnotes(4)(5)
Class A Common Stock08/17/2026S582,500D$8.9702(10)2,964,187ISee footnotes(4)(5)
Class A Common Stock390,952D
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)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Explanation of Responses:
1. These shares of the Issuer's common stock, par value $0.0001 per share (the "Shares"), were sold by Glenview Offshore Opportunity Master Fund, Ltd. and Glenview Healthcare Master Fund, L.P.
2. This price reflects the weighted average price for open-market sales of Shares on August 13, 2026 within a $1.00 range. The actual prices for these transactions range from $9.43 to $9.575, inclusive. Mr. Robbins further undertakes to provide upon request by the Commission staff, the Issuer, or a security holder of the Issuer, full information regarding the number of Shares sold at each separate price.
3. Glenview Capital Master Fund, Ltd., Glenview Offshore Opportunity Master Fund, Ltd. and Glenview Healthcare Master Fund, L.P. (collectively, the "Glenview Investment Funds") are the record holders of these Shares. Mr. Robbins is the Founder, Portfolio Manager and CIO of Glenview Capital Management, LLC, which serves as investment manager to each of the Glenview Investment Funds. Mr. Robbins shares voting and dispositive power over the Shares held by the Glenview Investment Funds and may be deemed to beneficially own such Shares.
4. Longview Investors LLC ("Longview"), or its affiliates, is the record holder of these securities. Mr. Robbins is the managing member of Longview. Mr. Robbins shares voting and dispositive power over the securities held by Longview and may be deemed to beneficially own such securities.
5. Mr. Robbins disclaims beneficial ownership over any securities owned by Longview and the Glenview Investment Funds other than to the extent of any pecuniary interest he may have therein.
6. These Shares were sold by Glenview Offshore Opportunity Master Fund, Ltd.
7. This price reflects the weighted average price for open-market sales of Shares on August 13, 2026 within a $1.00 range. The actual prices for these transactions range from $9.035 to $9.3408, inclusive. Mr. Robbins further undertakes to provide upon request by the Commission staff, the Issuer, or a security holder of the Issuer, full information regarding the number of Shares sold at each separate price.
8. This price reflects the weighted average price for open-market sales of Shares on August 13, 2026 within a $1.00 range. The actual prices for these transactions range from $8.86 to $9.12, inclusive. Mr. Robbins further undertakes to provide upon request by the Commission staff, the Issuer, or a security holder of the Issuer, full information regarding the number of Shares sold at each separate price.
9. This price reflects the weighted average price for open-market sales of Shares on August 14, 2026 within a $1.00 range. The actual prices for these transactions range from $8.36 to $8.94, inclusive. Mr. Robbins further undertakes to provide upon request by the Commission staff, the Issuer, or a security holder of the Issuer, full information regarding the number of Shares sold at each separate price.
10. This price reflects the weighted average price for open-market sales of Shares on August 17, 2026 within a $1.00 range. The actual prices for these transactions range from $8.85 to $9.07, inclusive. Mr. Robbins further undertakes to provide upon request by the Commission staff, the Issuer, or a security holder of the Issuer, full information regarding the number of Shares sold at each separate price.
/s/ Larry Robbins08/17/2026
** Signature of Reporting PersonDate
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)

Source: View Original Filing on SEC EDGAR