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BFLY SCHEDULE 13D/A: Insider sale planned

Filed with the SEC on · accession 0000905148-26-003785

BFLY filed a SCHEDULE 13D/A (schedule 13d/a) with the SEC on Aug 17, 2026. Glenview Capital-affiliated entities (GCM Onshore Investors, GCM Cayman Investors, Glenview Offshore Opportunity Master Fund, Glenview Healthcare Master Fund, and Longview) sold approximately 4.17 million shares of Butterfly Network common stock in open-market transactions between July 31 and… The stock moved +2.0% by the first close after the filing.

Summary of the filing

Glenview Capital-affiliated entities (GCM Onshore Investors, GCM Cayman Investors, Glenview Offshore Opportunity Master Fund, Glenview Healthcare Master Fund, and Longview) sold approximately 4.17 million shares of Butterfly Network common stock in open-market transactions between July 31 and August 17, 2026, at weighted average prices ranging from roughly $7.39 to $9.54 per share.

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Key details

Total shares sold across all transactions$4.2M
Approximate total gross proceeds from sales$36.0M
Selling shareholderGCM Onshore Investors, L.P.
Selling shareholderGCM Cayman Investors, Ltd.
Selling shareholderGlenview Offshore Opportunity Master Fund
Selling shareholderGlenview Healthcare Master Fund
Selling shareholderLongview
Affiliate that transferred shares to gcm entitiesGlenview Capital Master Fund
IssuerButterfly Network, Inc.

How BFLY stock reacted

Close before

$8.84

Aug 14, 2026

First close after

+2.04%

$9.02

5 trading days

+8.03%

$9.55

Since filing

-27.94%

$6.37

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Frequently asked questions

What did BFLY file with the SEC on Aug 17, 2026?

BFLY filed a SCHEDULE 13D/A (Insider sale planned). Glenview Capital-affiliated entities (GCM Onshore Investors, GCM Cayman Investors, Glenview Offshore Opportunity Master Fund, Glenview Healthcare Master Fund, and Longview) sold approximately 4.17 million shares of Butterfly Network common stock in open-market transactions between July 31 and August 17, 2026, at weighted average prices ranging from roughly $7.39 to $9.54 per share.

How do I read a SCHEDULE 13D/A?

A report the company filed with the SEC (the US market regulator). Start with the summary, then the key amounts and names. Compare it with the company’s earlier filings.

Why are SEC filings important?

Public companies must tell the SEC about anything that can change their value — results, leadership changes, big deals, new shares, bankruptcy. Filings are the official source, often before the news. A SCHEDULE 13D/A (schedule 13d/a): A report the company filed with the SEC (the US market regulator).

How did BFLY stock react to this filing?

BFLY closed at $8.84 before the filing and $9.02 on Aug 17, 2026 (+2.04%). Five trading days later: $9.55 (+8.03%).

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