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Butterfly Network stock timeline
A year of the price with every insider trade, planned sale, earnings report and material 8-K marked
252 sessions+183.2% to $6.37
Butterfly Network (BFLY) stock rose 183% over the last 252 sessions, to $6.37. On the way it reported 4 quarters, its insiders filed 37 open-market trades and 25 Form 144 notices of planned sales, and the company filed 5 material 8-Ks. Each is marked on the price and listed with what the stock did next.
Each mark, and what followed
| Date | Kind | What | Next session | 5 sessions | 21 sessions |
|---|---|---|---|---|---|
| Oct 30, 2026 | Form 144 | Form 144: Joseph DeVivo plans to sell $634K | −16.1% (−14.4% vs SPY) | −21.3% (−16.4% vs SPY) | — |
| Oct 29, 2026 | Earnings | Earnings: beat the EPS estimate by 72.2% | −3.9% (−3.5% vs SPY) | −14.3% (−13.6% vs SPY) | — |
| Oct 6, 2026 | Form 144 | Form 144: Joseph Devivo plans to sell $359K | −7.5% (−8.1% vs SPY) | −9.3% (−9.7% vs SPY) | −38.2% (−35.6% vs SPY) |
| Oct 5, 2026 | 8-K | Directors and officers: departures, appointments, pay | +4.7% (+4.0% vs SPY) | −8.2% (−9.3% vs SPY) | −37.7% (−35.4% vs SPY) |
| Oct 2, 2026 | Form 144 | Form 144: Megan Carlson plans to sell $88K | +4.8% (+4.1% vs SPY) | −6.0% (−7.3% vs SPY) | −28.9% (−27.8% vs SPY) |
| Sep 23, 2026 | Form 144 | Form 144: Erica Schwartz plans to sell $3.2M | −7.6% (−6.9% vs SPY) | −8.7% (−7.5% vs SPY) | −33.6% (−33.5% vs SPY) |
| Sep 23, 2026 | Form 144 | Form 144: Joseph Devivo plans to sell $32K | −7.6% (−6.9% vs SPY) | −8.7% (−7.5% vs SPY) | −33.6% (−33.5% vs SPY) |
| Sep 22, 2026 | Form 144 | Form 144: Erica Schwartz plans to sell $787K | +19.9% (+19.9% vs SPY) | +11.7% (+12.7% vs SPY) | −10.8% (−10.2% vs SPY) |
| Sep 22, 2026 | Form 144 | Form 144: Joseph Devivo plans to sell $28K | +19.9% (+19.9% vs SPY) | +11.7% (+12.7% vs SPY) | −10.8% (−10.2% vs SPY) |
| Sep 4, 2026 | Form 144 | Form 144: Megan Carlson plans to sell $101K | +1.0% (+1.3% vs SPY) | +0.6% (+1.7% vs SPY) | +25.2% (+24.8% vs SPY) |
| Sep 4, 2026 | Form 144 | Form 144: Steve Cashman plans to sell $1.0M | +1.0% (+1.3% vs SPY) | +0.6% (+1.7% vs SPY) | +25.2% (+24.8% vs SPY) |
| Sep 4, 2026 | Insider sale | Cashman Steve sold $1.0M | +1.0% (+1.3% vs SPY) | +0.6% (+1.7% vs SPY) | +25.2% (+24.8% vs SPY) |
| Sep 4, 2026 | Insider sale | Carlson Megan sold $101K | +1.0% (+1.3% vs SPY) | +0.6% (+1.7% vs SPY) | +25.2% (+24.8% vs SPY) |
| Sep 2, 2026 | Insider sale | Caezza Nicholas sold $14K | −7.3% (−7.8% vs SPY) | −9.2% (−9.3% vs SPY) | +4.2% (+3.7% vs SPY) |
| Aug 17, 2026 | Insider sale | Robbins Larry sold $5.2M | +2.0% (+2.5% vs SPY) | +7.7% (+9.1% vs SPY) | −12.5% (−10.0% vs SPY) |
| Aug 14, 2026 | Insider sale | Robbins Larry sold $7.2M | −0.2% (0.0% vs SPY) | +3.4% (+5.4% vs SPY) | −17.8% (−15.6% vs SPY) |
| Aug 14, 2026 | Insider buy | Phanstiel S. Louise bought $1.0M | −0.2% (0.0% vs SPY) | +3.4% (+5.4% vs SPY) | −17.8% (−15.6% vs SPY) |
| Aug 13, 2026 | Insider sale | Robbins Larry sold $8.2M | −6.5% (−7.2% vs SPY) | −3.0% (−2.6% vs SPY) | −25.4% (−24.3% vs SPY) |
| Aug 11, 2026 | 8-K | Directors and officers: departures, appointments, pay | −3.5% (−3.1% vs SPY) | −7.3% (−7.2% vs SPY) | −26.2% (−24.9% vs SPY) |
| Aug 11, 2026 | Form 144 | Form 144: Nicholas Caezza plans to sell $98K | −3.5% (−3.1% vs SPY) | −7.3% (−7.2% vs SPY) | −26.2% (−24.9% vs SPY) |
| Aug 11, 2026 | Insider sale | Caezza Nicholas sold $98K | −3.5% (−3.1% vs SPY) | −7.3% (−7.2% vs SPY) | −26.2% (−24.9% vs SPY) |
| Aug 10, 2026 | Form 144 | Form 144: Joseph Devivo plans to sell $684K | +9.4% (+9.4% vs SPY) | +0.1% (−0.3% vs SPY) | −16.0% (−15.1% vs SPY) |
| Aug 10, 2026 | Form 144 | Form 144: Dawn Carfora plans to sell $86K | +9.4% (+9.4% vs SPY) | +0.1% (−0.3% vs SPY) | −16.0% (−15.1% vs SPY) |
| Aug 3, 2026 | Insider sale | Robbins Larry sold $1.3M | +14.5% (+13.1% vs SPY) | +21.7% (+18.2% vs SPY) | +10.4% (+7.7% vs SPY) |
| Jul 31, 2026 | Form 144 | Form 144: Larry Robbins plans to sell $13.3M | −13.9% (−14.6% vs SPY) | +1.6% (−2.0% vs SPY) | +3.1% (−0.6% vs SPY) |
| Jul 31, 2026 | Form 144 | Form 144: Megan Carlson plans to sell $541K | −13.9% (−14.6% vs SPY) | +1.6% (−2.0% vs SPY) | +3.1% (−0.6% vs SPY) |
| Jul 31, 2026 | Insider sale | Robbins Larry sold $12.7M | −13.9% (−14.6% vs SPY) | +1.6% (−2.0% vs SPY) | +3.1% (−0.6% vs SPY) |
| Jul 31, 2026 | Insider sale | Carlson Megan sold $541K | −13.9% (−14.6% vs SPY) | +1.6% (−2.0% vs SPY) | +3.1% (−0.6% vs SPY) |
| Jul 30, 2026 | Earnings | Earnings: beat the EPS estimate by 66.7% | +14.0% (+12.4% vs SPY) | +17.1% (+11.7% vs SPY) | +20.5% (+15.0% vs SPY) |
| Jul 22, 2026 | Form 144 | Form 144: Jonathan M Rothberg plans to sell $4.3M | −3.1% (−3.0% vs SPY) | +5.0% (+6.0% vs SPY) | +29.6% (+26.8% vs SPY) |
| Jul 21, 2026 | Form 144 | Form 144: Jonathan M Rothberg plans to sell $5.1M | +1.9% (+1.1% vs SPY) | +5.5% (+5.9% vs SPY) | +29.6% (+26.3% vs SPY) |
| Jul 20, 2026 | Form 144 | Form 144: Victor Ku plans to sell $318K | +1.1% (+1.2% vs SPY) | −0.6% (0.0% vs SPY) | +30.9% (+27.0% vs SPY) |
| Jul 20, 2026 | Form 144 | Form 144: John Doherty plans to sell $375K | +1.1% (+1.2% vs SPY) | −0.6% (0.0% vs SPY) | +30.9% (+27.0% vs SPY) |
| Jul 20, 2026 | Form 144 | Form 144: Joseph Devivo plans to sell $1.4M | +1.1% (+1.2% vs SPY) | −0.6% (0.0% vs SPY) | +30.9% (+27.0% vs SPY) |
| Jul 20, 2026 | Form 144 | Form 144: Jonathan M Rothberg plans to sell $7.8M | +1.1% (+1.2% vs SPY) | −0.6% (0.0% vs SPY) | +30.9% (+27.0% vs SPY) |
| Jul 20, 2026 | Insider sale | Ku Victor sold $318K | +1.1% (+1.2% vs SPY) | −0.6% (0.0% vs SPY) | +30.9% (+27.0% vs SPY) |
| Jul 20, 2026 | Insider sale | Doherty John N. sold $375K | +1.1% (+1.2% vs SPY) | −0.6% (0.0% vs SPY) | +30.9% (+27.0% vs SPY) |
| Jul 20, 2026 | Insider sale | Devivo Joseph sold $1.4M | +1.1% (+1.2% vs SPY) | −0.6% (0.0% vs SPY) | +30.9% (+27.0% vs SPY) |
| Jul 17, 2026 | Form 144 | Form 144: Jonathan M Rothberg plans to sell $7.9M | −5.7% (−4.7% vs SPY) | −5.7% (−4.1% vs SPY) | +23.2% (+19.8% vs SPY) |
| Jul 16, 2026 | Form 144 | Form 144: Jonathan M Rothberg plans to sell $10.4M | −4.0% (−3.5% vs SPY) | −9.9% (−9.0% vs SPY) | +19.4% (+16.3% vs SPY) |
| Jul 15, 2026 | Form 144 | Form 144: Jonathan M Rothberg plans to sell $12.7M | −6.0% (−6.4% vs SPY) | −12.8% (−12.3% vs SPY) | +19.8% (+17.1% vs SPY) |
| Jul 14, 2026 | Form 144 | Form 144: Jonathan M Rothberg plans to sell $6.3M | −4.4% (−4.8% vs SPY) | −19.1% (−18.2% vs SPY) | +14.6% (+11.7% vs SPY) |
| Jul 7, 2026 | Form 144 | Form 144: Joseph Devivo plans to sell $1.6M | −8.2% (−7.8% vs SPY) | −1.6% (−1.3% vs SPY) | +6.8% (+4.2% vs SPY) |
| Jul 7, 2026 | Insider sale | Ku Victor sold $281K | −8.2% (−7.8% vs SPY) | −1.6% (−1.3% vs SPY) | +6.8% (+4.2% vs SPY) |
| Jul 7, 2026 | Insider sale | Doherty John N. sold $435K | −8.2% (−7.8% vs SPY) | −1.6% (−1.3% vs SPY) | +6.8% (+4.2% vs SPY) |
| Jul 7, 2026 | Insider sale | Devivo Joseph sold $1.6M | −8.2% (−7.8% vs SPY) | −1.6% (−1.3% vs SPY) | +6.8% (+4.2% vs SPY) |
| Jul 2, 2026 | Insider sale | Carlson Megan sold $329K | −3.2% (−3.1% vs SPY) | +1.1% (+0.3% vs SPY) | −10.9% (−11.1% vs SPY) |
| Jun 8, 2026 | Insider sale | Cashman Steve sold $1.4M | +4.5% (+4.3% vs SPY) | +19.2% (+18.7% vs SPY) | +47.4% (+46.1% vs SPY) |
| Jun 5, 2026 | Insider sale | Cashman Steve sold $520K | −12.7% (−10.1% vs SPY) | +9.0% (+11.6% vs SPY) | +37.9% (+38.9% vs SPY) |
| May 8, 2026 | 8-K | Directors and officers: departures, appointments, pay | −1.9% (−2.7% vs SPY) | −3.3% (−5.6% vs SPY) | +12.0% (+10.9% vs SPY) |
| May 1, 2026 | Insider sale | Carlson Megan sold $525K | +12.0% (+11.7% vs SPY) | −12.2% (−14.0% vs SPY) | −4.0% (−9.4% vs SPY) |
| Apr 30, 2026 | Earnings | Earnings: beat the EPS estimate by 40.0% | −2.7% (−3.7% vs SPY) | −7.8% (−10.9% vs SPY) | −7.8% (−13.9% vs SPY) |
| Apr 29, 2026 | Insider sale | Cashman Steve sold $724K | −4.8% (−4.7% vs SPY) | −6.8% (−8.5% vs SPY) | −11.3% (−17.1% vs SPY) |
| Mar 5, 2026 | Insider sale | Devivo Joseph sold $1.8M | −6.9% (−6.4% vs SPY) | −5.3% (−4.1% vs SPY) | +2.0% (+6.1% vs SPY) |
| Mar 3, 2026 | Insider sale | Devivo Joseph sold $598K | −4.5% (−3.6% vs SPY) | −2.4% (−1.2% vs SPY) | +4.8% (+10.0% vs SPY) |
| Mar 3, 2026 | Insider sale | Cashman Steve sold $158K | −4.5% (−3.6% vs SPY) | −2.4% (−1.2% vs SPY) | +4.8% (+10.0% vs SPY) |
| Mar 3, 2026 | Insider sale | Carlson Megan sold $156K | −4.5% (−3.6% vs SPY) | −2.4% (−1.2% vs SPY) | +4.8% (+10.0% vs SPY) |
| Mar 3, 2026 | Insider sale | Caezza Nicholas sold $53K | −4.5% (−3.6% vs SPY) | −2.4% (−1.2% vs SPY) | +4.8% (+10.0% vs SPY) |
| Feb 26, 2026 | Earnings | Earnings: beat the EPS estimate by 55.6% | +41.0% (+41.5% vs SPY) | +26.2% (+27.4% vs SPY) | +29.2% (+36.1% vs SPY) |
| Jan 14, 2026 | 8-K | Delisting notice or listing-rule failure | −8.4% (−8.7% vs SPY) | −5.2% (−5.0% vs SPY) | −48.7% (−47.5% vs SPY) |
| Jan 7, 2026 | Insider sale | Doherty John N. sold $240K | +3.6% (+4.0% vs SPY) | +8.0% (+7.8% vs SPY) | −22.9% (−20.8% vs SPY) |
| Jan 5, 2026 | Insider sale | Ku Victor sold $137K | +3.1% (+2.5% vs SPY) | +7.4% (+5.9% vs SPY) | +4.7% (+3.8% vs SPY) |
| Dec 15, 2025 | Insider buy | Phanstiel S. Louise bought $571K | +6.7% (+6.9% vs SPY) | +16.8% (+16.7% vs SPY) | +49.7% (+48.2% vs SPY) |
| Dec 11, 2025 | Insider buy | Robbins Larry bought $65K | +1.0% (+0.8% vs SPY) | +3.9% (+6.2% vs SPY) | +33.6% (+32.3% vs SPY) |
| Dec 5, 2025 | Insider buy | Robbins Larry bought $612K | 0.0% (−0.2% vs SPY) | +0.7% (0.0% vs SPY) | +28.3% (+26.9% vs SPY) |
| Dec 4, 2025 | Insider buy | Robbins Larry bought $1.6M | +3.0% (+2.9% vs SPY) | +2.7% (+2.1% vs SPY) | +26.5% (+25.6% vs SPY) |
| Dec 3, 2025 | Insider buy | Robbins Larry bought $2.4M | +8.1% (+7.7% vs SPY) | +12.4% (+12.1% vs SPY) | +31.4% (+30.9% vs SPY) |
| Nov 21, 2025 | Insider buy | Robbins Larry bought $2.1M | +13.3% (+12.3% vs SPY) | +29.0% (+24.4% vs SPY) | +49.3% (+44.2% vs SPY) |
| Nov 20, 2025 | Insider buy | Robbins Larry bought $2.4M | −3.4% (−1.8% vs SPY) | +24.9% (+22.4% vs SPY) | +39.4% (+36.5% vs SPY) |
| Nov 19, 2025 | Insider buy | Robbins Larry bought $2.4M | +17.7% (+17.3% vs SPY) | +52.3% (+50.0% vs SPY) | +54.0% (+51.6% vs SPY) |
| Nov 18, 2025 | 8-K | Material definitive agreement | +2.0% (+2.8% vs SPY) | +51.0% (+50.5% vs SPY) | +47.6% (+46.7% vs SPY) |
Insiders’ record here
In the year on the chart, Butterfly Network's insiders reported 9 open-market buys ($13.1M) and 28 sales ($47.4M). Of the 29 old enough to score, 10 were followed by the stock doing what the trade implied over the next 63 sessions (beating SPY after a buy, lagging it after a sale); the median excess return after a buy was +23.8% and after a sale +12.8%.
Across the whole universe (19,782 scored trades), insider buys beat the market 46% of the time and sales were followed by a lagging stock 61% of the time; buys of $1M or more 39%. Every pattern →
What this kind of 8-K usually did
| Item | 8-Ks | Next session, median | Up next session | 21 sessions, median | Typical size |
|---|---|---|---|---|---|
| 1.01 Material definitive agreement | 23,525 | 0.0% | 51% | +1.0% | ±1.4% |
| 3.01 Delisting notice or listing-rule failure | 492 | 0.0% | 46% | −0.2% | ±2.1% |
| 5.02 Directors and officers: departures, appointments, pay | 39,174 | −0.1% | 48% | +0.7% | ±1.4% |
Across every company in the move-odds universe, measured from the close before the filing. Every 8-K item ranked →
Report card: every quarter against the estimate → Butterfly Network: every quarter → Live insider trades →
Prices are daily closes; filings and trades are as filed with the SEC (Form 4 within two business days of the trade, 8-K within four of the event). Moves after a mark are the stock's close-to-close change and the same for SPY; they describe the record, not what the next one will do. Not investment advice.