Butterfly Network (BFLY) director Jonathan Rothberg reports Rule 10b5-1 stock sales
Filing Impact
Filing Sentiment
Form Type
4
Rhea-AI Filing Summary
Butterfly Network, Inc. insider Jonathan M. Rothberg, Ph.D., a director and 10% owner, reported multiple open-market sales of Class A common stock in mid-December 2025 under a pre-arranged Rule 10b5-1 trading plan adopted on March 5, 2025 for estate planning purposes. On December 10, 2025, an affiliated entity, EJR TR, LLC, sold 288,918 Class A shares at a weighted average price of $3.1332 per share. On December 11, 2025, EJR TR, LLC sold 123,354 Class A shares at a weighted average price of $3.0816 per share. On December 12, 2025, EJR TR, LLC sold 82,262 Class A shares and JNR TR, LLC sold 111,031 Class A shares, each at a weighted average price of $3.0804 per share. Following these transactions, Rothberg continues to report indirect holdings in multiple entities and disclaims beneficial ownership beyond his pecuniary interest.
Positive
- None.
Negative
- None.
Insights
Analyzing...
Insider Trade Summary
Net Seller: 605,565 shares ($1,880,785)
Net Sell
17 txns
Insider
ROTHBERG JONATHAN M
Role
Director, 10% Owner
Sold
605,565 shs ($1.88M)
| Type | Security | Shares | Price | Value |
|---|---|---|---|---|
| Sale | Class A Common Stock | 82,262 | $3.0804 | $253K |
| Sale | Class A Common Stock | 111,031 | $3.0804 | $342K |
| Sale | Class A Common Stock | 123,354 | $3.0816 | $380K |
| Sale | Class A Common Stock | 288,918 | $3.1332 | $905K |
| holding | Class A Common Stock | -- | -- | -- |
| holding | Class A Common Stock | -- | -- | -- |
| holding | Class A Common Stock | -- | -- | -- |
| holding | Class A Common Stock | -- | -- | -- |
| holding | Class B Common Stock | -- | -- | -- |
| holding | Class B Common Stock | -- | -- | -- |
| holding | Class B Common Stock | -- | -- | -- |
| holding | Class B Common Stock | -- | -- | -- |
| holding | Class B Common Stock | -- | -- | -- |
| holding | Class B Common Stock | -- | -- | -- |
| holding | Class B Common Stock | -- | -- | -- |
| holding | Class B Common Stock | -- | -- | -- |
| holding | Class B Common Stock | -- | -- | -- |
Holdings After Transaction:
Class A Common Stock — 50,360 shares (Indirect, By EJR TR, LLC);
Class A Common Stock — 2,880,252 shares (Direct);
Class B Common Stock — 4,716,596 shares (Indirect, By 4C Holdings I, LLC)
Footnotes (1)
- The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 5, 2025 for estate planning purposes. Represents the weighted average sales price per share. The shares sold at prices ranging from $3.07 to $3.19 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. 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, JAR 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. Represents the weighted average sales price per share. The shares sold at prices ranging from $3.07 to $3.1089 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. Represents the weighted average sales price per share. The shares sold at prices ranging from $3.07 to $3.13 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.
FAQ
What did Jonathan M. Rothberg report in this Form 4 for Butterfly Network (BFLY)?
Jonathan M. Rothberg, Ph.D., a director and 10% owner of Butterfly Network, Inc. (BFLY), reported several sales of Class A common stock in December 2025 by entities he manages, primarily EJR TR, LLC and JNR TR, LLC.
Were the Butterfly Network (BFLY) insider sales made under a Rule 10b5-1 trading plan?
Yes. The filing states that the transactions were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 5, 2025 for estate planning purposes.
Does Jonathan Rothberg still have indirect holdings in Butterfly Network (BFLY) after these sales?
Yes. The report lists continued indirect holdings of Class A and Class B common stock through multiple entities, including various 4C Holdings LLCs and several trusts. Rothberg disclaims beneficial ownership of these securities except to the extent of his pecuniary interest.