Butterfly Network, Inc. (BFLY) insider 10b5-1 sale of 3,126,453 shares
Rhea-AI Filing Summary
Butterfly Network, Inc. director and 10% owner Jonathan M. Rothberg reported that entities he manages sold 3,126,453 shares of Class B common stock on July 17–21, 2026 in open‑market or private transactions at weighted‑average prices of $6.5959, $6.6138 and $6.7359 per share. The Class B shares automatically converted into Class A common stock on a one‑to‑one basis upon sale under a Rule 10b5‑1 trading plan adopted March 13, 2026 for estate planning purposes. Reported indirect holdings include 496,680 Class B shares by EJR TR, LLC and 72,724 Class B shares by NVR TR, LLC, among other entities, while Rothberg disclaims beneficial ownership of these securities except to the extent of his pecuniary interest.
Positive
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Negative
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Insights
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Insider Trade Summary 10b5-1
Net Seller: 3,126,453 shares
Net Sell
11 txns
Insider
ROTHBERG JONATHAN M
Role
Director, 10% Owner
Sold
3,126,453 shs ($20.75M)
| Type | Security | Shares | Price | Value |
|---|---|---|---|---|
| Sale | Class B Common Stock F1, F2, F6, F4 | 753,320 | $6.7359 | $5.07M |
| Sale | Class B Common Stock F1, F2, F5, F4 | 1,177,276 | $6.6138 | $7.79M |
| Sale | Class B Common Stock F1, F2, F3, F4 | 1,195,857 | $6.5959 | $7.89M |
| holding | Class A Common Stock | -- | -- | -- |
| holding | Class A Common Stock F4 | -- | -- | -- |
| holding | Class B Common Stock F4 | -- | -- | -- |
| holding | Class B Common Stock F4 | -- | -- | -- |
| holding | Class B Common Stock F4 | -- | -- | -- |
| holding | Class B Common Stock F4 | -- | -- | -- |
| holding | Class B Common Stock F4 | -- | -- | -- |
| holding | Class B Common Stock F4 | -- | -- | -- |
Holdings After Transaction:
Class B Common Stock — 54,143 shares (Indirect, By GBR TR, LLC);
Class B Common Stock — 72,724 shares (Indirect, By NVR TR, LLC);
Class B Common Stock — 496,680 shares (Indirect, By EJR TR, LLC);
Class A Common Stock — 105,881 shares (Direct);
Class A Common Stock — 726,696 shares (Indirect, By Bonnie E Gould Rothberg MD);
Class B Common Stock — 4,716,596 shares (Indirect, By 4C Holdings I, LLC);
Class B Common Stock — 2,621,701 shares (Indirect, By 4C Holdings II, LLC);
Class B Common Stock — 2,621,701 shares (Indirect, By 4C Holdings III, LLC);
Class B Common Stock — 2,621,701 shares (Indirect, By 4C Holdings IV, LLC);
Class B Common Stock — 8,845,238 shares (Indirect, By 4C Holdings V, LLC);
Class B Common Stock — 36,366 shares (Indirect, By JNR TR, LLC)
Footnotes (6)
- F1. In accordance with its terms, the Class B common stock automatically converted into Class A common stock, on a one-to-one basis, upon sale.
- F2. The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 13, 2026 for estate planning purposes.
- F3. Represents the weighted average sales price per share. The shares sold at prices ranging from $6.435 to $6.855 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange Commission, the Issuer, or a security holder of the Issuer.
- F4. Dr. Rothberg is the Manager of 4C Holdings I, LLC, 4C Holdings II, LLC, 4C Holdings III, LLC, 4C Holdings IV, LLC, 4C Holdings V, LLC, NVR TR, LLC, JNR TR, LLC, GBR TR, LLC and EJR TR, LLC, and is the spouse of Bonnie E Gould Rothberg MD. Dr. Rothberg disclaims beneficial ownership of the securities held by these persons and entities except to the extent of his pecuniary interest therein.
- F5. Represents the weighted average sales price per share. The shares sold at prices ranging from $6.44 to $6.72 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange Commission, the Issuer, or a security holder of the Issuer.
- F6. Represents the weighted average sales price per share. The shares sold at prices ranging from $6.505 to $6.8755 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange Commission, the Issuer, or a security holder of the Issuer.
Key Figures
Total shares sold: 3,126,453 shares
Shares sold 2026-07-17 (GBR TR, LLC): 1,195,857 shares
Shares sold 2026-07-20 (NVR TR, LLC): 1,177,276 shares
+5 more
8 metrics
Total shares sold
3,126,453 shares
Aggregate non-derivative Class B sales by managed entities on July 17–21, 2026
Shares sold 2026-07-17 (GBR TR, LLC)
1,195,857 shares
Class B sale at weighted-average price $6.5959 per share
Shares sold 2026-07-20 (NVR TR, LLC)
1,177,276 shares
Class B sale at weighted-average price $6.6138 per share
Shares sold 2026-07-21 (EJR TR, LLC)
753,320 shares
Class B sale at weighted-average price $6.7359 per share
Class B to Class A conversion ratio
1-to-1
Class B common stock automatically converted into Class A common stock upon sale
Indirect holding by 4C Holdings I, LLC
4,716,596 shares
Reported Class B common stock held indirectly as of July 17, 2026
Indirect holding by 4C Holdings V, LLC
8,845,238 shares
Reported Class B common stock held indirectly as of July 17, 2026
Direct Class A holding
105,881 shares
Class A common stock held directly by Jonathan M. Rothberg as of July 17, 2026
Key Terms
Rule 10b5-1 trading plan, weighted average sales price, beneficial ownership, pecuniary interest, +1 more
5 terms
Rule 10b5-1 trading plan regulatory
"transactions reported ... were effected pursuant to a Rule 10b5-1 trading plan adopted"
A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.
weighted average sales price financial
"Represents the weighted average sales price per share. The shares sold at prices"
beneficial ownership financial
"Dr. Rothberg disclaims beneficial ownership of the securities held by these persons"
Beneficial ownership means the person or entity that actually enjoys the benefits of owning shares or other assets — such as receiving dividends, voting rights, or price gains — even if the legal title is held in another name. For investors it matters because knowing who truly controls and profits from a company reveals who can influence decisions, exposes potential conflicts of interest or hidden concentration of power, and affects transparency and risk in the stock.
pecuniary interest financial
"except to the extent of his pecuniary interest therein"
Class B common stock financial
"In accordance with its terms, the Class B common stock automatically converted"
A class B common stock is one of multiple types of a company’s ordinary shares that carries specific rights—often different voting power or dividend priority—compared with other classes. For investors it matters because those differences affect how much influence you have over company decisions, the income you might receive, and how freely the shares trade; think of it like owning a car with different keys: some keys let you start the engine and open the trunk, others only unlock the door.
AI-generated analysis. How Rhea-AI works. Not financial advice.
FAQ
What insider activity did Butterfly Network (BFLY) disclose in this Form 4?
Butterfly Network reported that entities managed by director and 10% owner Jonathan M. Rothberg sold 3,126,453 Class B shares on July 17–21, 2026. These sales occurred in open‑market or private transactions and the shares automatically converted into Class A common stock upon sale.
Were the Butterfly Network (BFLY) insider sales made under a Rule 10b5-1 plan?
Yes. The filing states the transactions were effected pursuant to a Rule 10b5‑1 trading plan adopted by Jonathan M. Rothberg on March 13, 2026 for estate planning purposes. The document‑level 10b5‑1 checkbox is also marked as affirmed.
What Butterfly Network (BFLY) holdings does Jonathan M. Rothberg report after these sales?
Reported positions include 496,680 Class B shares held by EJR TR, LLC and 72,724 Class B shares held by NVR TR, LLC, plus other indirect Class B holdings and 105,881 Class A shares held directly. Rothberg disclaims beneficial ownership of entity‑held shares beyond his pecuniary interest.