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BCS

Notice of Proposed Sale · 144

Butterfly Network, Inc.

BFLYNYSEEQUITYCurrent

Notice of Proposed Sale

Filed Jul 31, 2026Accepted Jul 31, 2026, 11:40 AM EDTFiling CIK 1804176Accession 0001959173-26-005477
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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
Carlson Megan
Relationships to issuer
Officer
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 A68,852541,405.86244,858,24607/31/2026NYSEFidelity 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 · 4 reported rows
SecurityAcquiredNature of acquisitionAcquired fromAmount acquiredGift transactionPayment dateNature of payment
Class A03/04/2023Stock Option ExerciseIssuer4,915N03/04/2023Cash
Class A03/22/2023Stock Option ExerciseIssuer1,405N03/22/2023Cash
Class A06/30/2026ESPP PurchaseIssuer28,835N06/30/2026Cash
Class A07/01/2026Restricted Stock VestingIssuer33,697N07/01/2026Compensation

Sales reported in the preceding three months

Sales reported in the preceding three months · 2 reported rows
SellerSecuritySale dateAmount soldGross proceeds
Megan CarlsonClass A05/01/2026110,422524,402.24
Megan CarlsonClass A07/02/202641,303328,916.44

Seller — prior-sale row 1, entry 1

Name
Megan Carlson
Street
1600 District Avenue
City
Burlington
State / country code
MA
Postal code
01803

Seller — prior-sale row 2, entry 1

Name
Megan Carlson
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
07/31/2026
Signed
/s/ Daniel Tucci, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Megan Carlson

Company context

Current securities

Historical securities (4)

Recent company filings

  1. 144 filingOct 30, 2026
  2. S-3ASR filingOct 29, 2026
  3. 10-Q filingOct 29, 2026
  4. Results of Operations and Financial ConditionOct 29, 2026
  5. 4 filingOct 15, 2026

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