BFLY insider buying and SEC filings, explained
Butterfly Network, Inc. · CIK 1804176
Tracked: Forms 3/4/5, 8-K, NT · All filings on sec.gov
Insider activity in the last 12 months
Bought
$13.1M
Insiders who bought
2
Sold (not marked 10b5-1)
$47.8M
Planned sales (10b5-1)
$78.4M
Insider purchases and sales, last 12 months
| Traded | Type | What was filed | Source |
|---|---|---|---|
| Oct 6, 2026 | Planned (10b5-1) | Joseph Devivo (CEO and Director) sold 35,790 shares at about $10.02 ($359K), marked as a 10b5-1 plan trade. Holdings down <1% to 7,311,930 shares. | SEC filing Filed Oct 8, 2026, 5:55 PM ET |
| Oct 2, 2026 | Sale | Megan Carlson (CAO and SVP, Finance) sold 10,114 shares at about $8.75 ($88K). Holdings down 2% to 401,971 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Oct 6, 2026, 4:36 PM ET |
| Sep 22–23, 2026 | Planned (10b5-1) | Joseph Devivo (CEO and Director) sold 5,980 shares between Sep 22 and Sep 23 at about $10.01 ($60K), marked as a 10b5-1 plan trade. Holdings down <1% to 7,347,720 shares. | SEC filing Filed Sep 24, 2026 |
| Sep 4, 2026 | Sale | Steve Cashman (Chief Business Officer) sold 140,112 shares at about $7.30 ($1.0M). Holdings down 9% to 1,490,295 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Sep 9, 2026 |
| Sep 4, 2026 | Sale | Megan Carlson (CAO and SVP, Finance) sold 13,804 shares at about $7.30 ($101K). Holdings down 3% to 412,085 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Sep 9, 2026 |
| Sep 2, 2026 | Sale | Nicholas Caezza (Deputy General Counsel) sold 1,709 shares at about $8.15 ($14K). Holdings down 1% to 305,166 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Sep 4, 2026 |
| Aug 14, 2026 | Purchase (code P) | S. Louise Phanstiel (Director) bought 115,200 shares indirectly (by trust) at about $8.68 ($1.0M), reported as a purchase (code P). Holdings by trust up 62% to 300,461 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Aug 17, 2026 |
| Aug 13–17, 2026 | Sale | Larry Robbins (Director) sold 2,297,733 shares indirectly between Aug 13 and Aug 17 at about $8.98 ($20.6M). Indirect holdings down 44% to 2,964,187 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Aug 17, 2026 |
| Aug 11, 2026 | Sale | Nicholas Caezza (Deputy General Counsel) sold 10,000 shares at $9.75 ($98K). Holdings down 3% to 300,307 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Aug 12, 2026 |
| Aug 10, 2026 | Planned (10b5-1) | Joseph Devivo (CEO and Director) sold 68,346 shares at about $10.01 ($684K), marked as a 10b5-1 plan trade. Holdings down 1% to 7,603,700 shares. | SEC filing Filed Aug 12, 2026 |
| Jul 31, 2026 | Sale | Megan Carlson (CAO and SVP, Finance) sold 68,852 shares at about $7.86 ($541K). Holdings down 14% to 425,889 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Aug 4, 2026 |
| Jul 31–Aug 3, 2026 | Sale | Larry Robbins (Director) sold 1,876,292 shares indirectly between Jul 31 and Aug 3 at about $7.45 ($14.0M). Indirect holdings down 13% to 12,458,763 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Aug 3, 2026 |
| Jul 22, 2026 | Planned (10b5-1) | Jonathan M. Rothberg (Director) sold 659,913 shares indirectly (by entity) at about $6.47 ($4.3M), marked as a 10b5-1 plan trade. Holdings by entity down 100% to 0 shares. | SEC filing Filed Jul 24, 2026 |
| Jul 20, 2026 | Sale | Victor Ku (Chief Technology Officer) sold 48,540 shares at about $6.56 ($318K). Holdings down 5% to 1,015,099 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Jul 21, 2026 |
| Jul 20, 2026 | Sale | John N. Doherty (CFO) sold 57,136 shares at about $6.56 ($375K). Holdings down 4% to 1,397,276 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Jul 21, 2026 |
| Jul 20, 2026 | Sale | Joseph Devivo (CEO and Director) sold 211,798 shares at about $6.56 ($1.4M). Holdings down 3% to 7,672,046 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Jul 21, 2026 |
| Jul 17–21, 2026 | Planned (10b5-1) | Jonathan M. Rothberg (Director and 10% owner) sold 3,126,453 shares indirectly (by entity) between Jul 17 and Jul 21 at about $6.64 ($20.8M), marked as a 10b5-1 plan trade. Holdings by entity down 96% to 54,143 shares. | SEC filing Filed Jul 21, 2026 |
| Jul 14–16, 2026 | Planned (10b5-1) | Jonathan M. Rothberg (Director and 10% owner) sold 4,013,452 shares in 2 share classes directly and indirectly (by entity) between Jul 14 and Jul 16 at about $7.32 ($29.4M), marked as a 10b5-1 plan trade. Direct holdings of Class A Common Stock down 96% to 105,881 shares. | SEC filing Filed Jul 16, 2026 |
| Jul 7, 2026 | Sale | Victor Ku (Chief Technology Officer) sold 35,649 shares at about $7.87 ($281K). Holdings down 3% to 1,063,639 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Jul 8, 2026 |
| Jul 7, 2026 | Sale | John N. Doherty (CFO) sold 55,229 shares at about $7.87 ($435K). Holdings down 4% to 1,454,412 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Jul 8, 2026 |
| Jul 7, 2026 | Sale | Joseph Devivo (CEO and Director) sold 204,725 shares at about $7.87 ($1.6M). Holdings down 3% to 7,883,844 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Jul 8, 2026 |
| Jul 2, 2026 | Sale | Megan Carlson (CAO and SVP, Finance) sold 41,303 shares at about $7.96 ($329K). Holdings down 8% to 465,906 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Jul 7, 2026 |
| Jun 5–8, 2026 | Sale | Steve Cashman (Chief Business Officer) sold 399,461 shares between Jun 5 and Jun 8 at about $4.74 ($1.9M). Holdings down 20% to 1,630,407 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Jun 9, 2026 |
| Jun 2, 2026 | Sale | Nicholas Caezza (Deputy General Counsel) sold 1,733 shares at about $4.52 ($8K). Holdings down 1% to 310,307 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Jun 4, 2026 |
| May 1, 2026 | Sale | Megan Carlson (CAO and SVP, Finance) sold 110,422 shares at about $4.75 ($525K). Holdings down 18% to 507,209 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed May 5, 2026 |
| Apr 29, 2026 | Sale | Steve Cashman (Chief Business Officer) sold 147,518 shares at about $4.91 ($724K). Holdings down 7% to 2,029,868 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed May 1, 2026 |
| Apr 16, 2026 | Planned (10b5-1) | Steve Cashman (Chief Business Officer) sold 200,000 shares at about $5.22 ($1.0M), marked as a 10b5-1 plan trade. Holdings down 8% to 2,177,386 shares. | SEC filing Filed Apr 17, 2026 |
| Mar 5, 2026 | Sale | Joseph Devivo (CEO and Director) sold 482,149 shares at about $3.71 ($1.8M). Holdings down 6% to 8,030,899 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 6, 2026 |
| Mar 3, 2026 | Sale | Steve Cashman (Chief Business Officer) sold 42,540 shares at about $3.71 ($158K). Holdings down 2% to 2,377,386 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 4, 2026 |
| Mar 3, 2026 | Sale | Joseph Devivo (CEO and Director) sold 161,275 shares at about $3.71 ($598K). Holdings down 2% to 8,513,048 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 4, 2026 |
| Mar 3, 2026 | Sale | Nicholas Caezza (Deputy General Counsel) sold 14,209 shares at about $3.71 ($53K). Holdings down 4% to 312,040 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 4, 2026 |
| Mar 3, 2026 | Sale | Megan Carlson (CAO and SVP, Finance) sold 41,978 shares at about $3.71 ($156K). Holdings down 6% to 617,631 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 4, 2026 |
| Feb 26, 2026 | Planned (10b5-1) | Steve Cashman (Chief Business Officer) sold 250,000 shares at about $4.35 ($1.1M), marked as a 10b5-1 plan trade. Holdings down 11% to 1,931,884 shares. | SEC filing Filed Mar 2, 2026 |
| Jan 7, 2026 | Sale | John N. Doherty (CFO) sold 60,182 shares at about $3.98 ($240K). Holdings down 5% to 1,234,688 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Jan 9, 2026 |
| Jan 6–8, 2026 | Planned (10b5-1) | Jonathan M. Rothberg (Director and 10% owner) sold 1,140,180 shares indirectly (by entity) between Jan 6 and Jan 8 at about $4.12 ($4.7M), marked as a 10b5-1 plan trade. Holdings by entity down 100% to 0 shares. | SEC filing Filed Jan 8, 2026 |
| Jan 5, 2026 | Sale | Victor Ku (Chief Technology Officer) sold 35,968 shares at about $3.82 ($137K). Holdings down 4% to 811,962 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Jan 7, 2026 |
| Dec 23–26, 2025 | Planned (10b5-1) | Jonathan M. Rothberg (Director and 10% owner) sold 62,365 shares indirectly (by entity) between Dec 23, 2025 and Dec 26, 2025 at about $4.01 ($250K), marked as a 10b5-1 plan trade. Holdings by entity down 5% to 1,140,180 shares. | SEC filing Filed Dec 29, 2025 |
| Dec 15, 2025 | Purchase (code P) | S. Louise Phanstiel (Director) bought 185,261 shares indirectly (by trust) at about $3.08 ($571K), reported as a purchase (code P). New position of 185,261 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Dec 17, 2025 |
| Dec 15–16, 2025 | Planned (10b5-1) | Jonathan M. Rothberg (Director and 10% owner) sold 886,294 shares indirectly (by entity) between Dec 15, 2025 and Dec 16, 2025 at about $3.15 ($2.8M), marked as a 10b5-1 plan trade. Holdings by entity down 100% to 0 shares. | SEC filing Filed Dec 17, 2025 |
| Dec 11, 2025 | Open-market purchase | Larry Robbins (Director and 10% owner) bought 21,370 shares indirectly at about $3.02 ($65K) in an open-market purchase. Indirect holdings up <1% to 14,335,055 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Dec 15, 2025 |
| Dec 10–12, 2025 | Planned (10b5-1) | Jonathan M. Rothberg (Director and 10% owner) sold 605,565 shares indirectly (by entity) between Dec 10, 2025 and Dec 12, 2025 at about $3.10 ($1.9M), marked as a 10b5-1 plan trade. Holdings by entity down 91% to 50,360 shares. | SEC filing Filed Dec 12, 2025 |
| Dec 8–9, 2025 | Planned (10b5-1) | Jonathan M. Rothberg (Director and 10% owner) sold 945,397 shares indirectly (by entity) between Dec 8, 2025 and Dec 9, 2025 at about $3.24 ($3.1M), marked as a 10b5-1 plan trade. Holdings by entity down 100% to 0 shares. | SEC filing Filed Dec 10, 2025 |
| Dec 4–5, 2025 | Planned (10b5-1) | Jonathan M. Rothberg (Director and 10% owner) sold 101,796 shares indirectly (by entity) between Dec 4, 2025 and Dec 5, 2025 at about $3.08 ($313K), marked as a 10b5-1 plan trade. Holdings by entity down 16% to 543,601 shares. | SEC filing Filed Dec 8, 2025 |
| Dec 3–5, 2025 | Open-market purchase | Larry Robbins (Director and 10% owner) bought 1,558,541 shares indirectly between Dec 3, 2025 and Dec 5, 2025 at about $2.98 ($4.6M) in an open-market purchase. Indirect holdings up 12% to 14,313,685 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Dec 5, 2025 |
| Dec 2, 2025 | Sale | Nicholas Caezza (Deputy General Counsel) sold 1,686 shares at about $2.83 ($5K). Holdings down 1% to 231,035 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Dec 4, 2025 |
| Nov 28, 2025 | Planned (10b5-1) | Jonathan M. Rothberg (Director and 10% owner) sold 132,570 shares indirectly (by entity) at about $3.08 ($408K), marked as a 10b5-1 plan trade. Holdings by entity down 21% to 512,827 shares. | SEC filing Filed Dec 2, 2025 |
| Nov 24–26, 2025 | Planned (10b5-1) | Jonathan M. Rothberg (Director and 10% owner) sold 2,227,876 shares indirectly (by entity) between Nov 24, 2025 and Nov 26, 2025 at about $3.18 ($7.1M), marked as a 10b5-1 plan trade. Holdings by entity down 52% to 544,894 shares. | SEC filing Filed Nov 26, 2025 |
| Nov 19–21, 2025 | Open-market purchase | Larry Robbins (Director) bought 2,800,000 shares indirectly between Nov 19, 2025 and Nov 21, 2025 at about $2.42 ($6.8M) in an open-market purchase. Indirect holdings up 28% to 12,755,144 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Nov 21, 2025 |
| Nov 4, 2025 | Sale | Dawn Carfora (Director) sold 112,009 shares at about $2.70 ($302K). Holdings down 30% to 265,505 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Nov 5, 2025 |
| Nov 3, 2025 | Planned (10b5-1) | Jonathan M. Rothberg (Director and 10% owner) sold 100,502 shares indirectly (by entity) at about $3.08 ($310K), marked as a 10b5-1 plan trade. Holdings by entity down 8% to 1,140,007 shares. | SEC filing Filed Nov 5, 2025 |
16 routine transactions (such as grants, option exercises or tax withholding) are not listed.
Cluster buys
2 insiders bought in 30 days
$12.1M in purchases since Nov 21, 2025 · Purchases traded Nov 21, 2025 to Dec 15, 2025 · Closed
| Insider | Value | Traded | Source |
|---|---|---|---|
| Larry Robbins (Director) | $6.8M | Nov 21, 2025 | SEC filing |
| Larry Robbins (Director) | $4.6M | Dec 5, 2025 | SEC filing |
| Larry Robbins (Director) | $65K | Dec 11, 2025 | SEC filing |
| S. Louise Phanstiel (Director) | $571K | Dec 15, 2025 | SEC filing |
Red flags
No red flags in the last 12 months.
Key events
No key events in the last 12 months.
8-K filings, last 12 months
No 8-K filings in the last 12 months.
Red flags are objective triggers only: the item or form filed, never an opinion.
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