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Notice of Proposed Sale · 144

Butterfly Network, Inc.

BFLYNYSEEQUITYCurrent

Notice of Proposed Sale

Filed Sep 23, 2026Accepted Sep 23, 2026, 11:01 AM EDTFiling CIK 1872122Accession 0001959173-26-007086
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Structured filing — 144

primary_doc.xml

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Notice of proposed sale. The proposed amounts below do not establish that a sale occurred.

Proposed-sale notice

Issuer
Butterfly Network, Inc.
Issuer CIK
0001804176
SEC file number
001-39292
Phone
781-557-4800
Person for whose account securities are to be sold
Schwartz Erica
Relationships to issuer
Former Director
Street
1600 DISTRICT AVENUE
City
BURLINGTON
State / country code
MA
Postal code
01803

Securities proposed for sale

Securities proposed for sale · 1 reported row
SecurityProposed unitsAggregate market valueUnits outstandingApproximate sale dateExchangeBroker / market maker
Class A323,0203,230,200.00244,858,24609/23/2026NYSEFidelity Brokerage Services LLC

Broker / market maker — proposed row 1, entry 1

Name
Fidelity Brokerage Services LLC
Street
900 Salem Street
City
Smithfield
State / country code
RI
Postal code
02917

Acquisition of securities to be sold

Acquisition of securities to be sold · 5 reported rows
SecurityAcquiredNature of acquisitionAcquired fromAmount acquiredGift transactionPayment dateNature of payment
Class A06/07/2024Restricted Stock VestingIssuer51,277N06/07/2024Compensation
Class A09/08/2024Restricted Stock VestingIssuer7,968N09/08/2024Compensation
Class A06/12/2025Restricted Stock VestingIssuer157,894N06/12/2025Compensation
Class A06/18/2026Restricted Stock VestingIssuer80,434N06/18/2026Compensation
Class A08/05/2026Restricted Stock VestingIssuer25,447N08/05/2026Compensation

Sales reported in the preceding three months

Sales reported in the preceding three months · 1 reported row
SellerSecuritySale dateAmount soldGross proceeds
ERICA SCHWARTZClass A09/22/202678,679786,790.00

Seller — prior-sale row 1, entry 1

Name
ERICA SCHWARTZ
Street
1600 District Avenue
City
Burlington
State / country code
MA
Postal code
01803

Prior-sale reporting

Nothing to report for the preceding three months
N

Notice signature

Notice date
09/23/2026
Signed
/s/ Daniel Tucci, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Erica Schwartz

Company context

Current securities

Historical securities (4)

Recent company filings

  1. 4 filingSep 24, 2026
  2. 144 filingSep 4, 2026
  3. 144 filingSep 2, 2026
  4. 4 filingAug 17, 2026
  5. 4 filingAug 12, 2026

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