Butterfly Network, Inc. (BFLY) shareholders
BFLYNYSEX-Ray Apparatus & Tubes & Related Irradiation ApparatusFiscal year ends December 31
Financials through Q3 FY2026, quarter ended Sep 30, 2026Last filing: 10-Q on Oct 29, 2026Score 6/30206% above fair value
$6.08−0.59 (-8.85%)
Close on Nov 13, 2026Market cap $1.63BP/E –Yield 0.00%
Ownership
Institutional holdings as of Jun 30, 2026, from 13F filings
Held by institutions
59.2%
158M of 267M shares
Institutional holders
245
47 new, 36 sold out
Net institutional buying
19M
In Q2 2026
Insider trades, 12 months
9 buys · 79 sales
Net sold $113.52M
Shares held by institutions
Holders of more than 5%
Latest Schedule 13D (active) or 13G (passive) filed by each holder
| Holder | Shares | % of class | Filing | As of |
|---|---|---|---|---|
| Abigail P. Johnson Joint filing with FMR LLC (15.00%) | 36,728,737 | 15.00% | 13G (passive) amendment | Sep 30, 2026 |
| FMR LLC Joint filing with Abigail P. Johnson (11.80%) | 28,952,297 | 11.80% | 13G (passive) | Jul 31, 2026 |
| Rothberg Jonathan M. Joint filing with 4C Holdings V, LLC (41.30%), 4C Holdings I, LLC (22.00%) and 3 more | 21,426,937 | 100.00% | 13D (active) amendment | Aug 14, 2026 |
| BlackRock, Inc. | 18,274,786 | 7.80% | 13G (passive) amendment | Jun 30, 2026 |
| Robbins Larry | 15,120,314 | 6.17% | 13D (active) amendment | Aug 13, 2026 |
| Hood River Capital Management LLC | 13,190,130 | 5.61% | 13G (passive) | Jun 30, 2026 |
Top institutional holders
13F holdings as of Jun 30, 2026
| Holder | Shares | % of BFLY | Value | Change | % of portfolio |
|---|---|---|---|---|---|
| BlackRock, Inc. | 18,821,463 | 7.04% | $158.48M | +2,859,983 | 0.00% |
| Glenview Capital Management, LLC | 14,335,055 | 5.36% | $120.70M | – | 2.20% |
| Hood River Capital Management LLC | 13,190,130 | 4.93% | $111.06M | +4,569,282 | 0.81% |
| Fosun International Ltd | 10,234,923 | 3.83% | $86.18M | −481,707 | 19.31% |
| Vanguard Capital Management LLC | 8,559,346 | 3.20% | $72.07M | +367,227 | 0.00% |
| D. E. Shaw & Co., Inc. | 6,392,827 | 2.39% | $53.83M | +5,272,536 | 0.03% |
| State Street Corp | 5,762,672 | 2.15% | $48.52M | +223,012 | 0.00% |
| Geode Capital Management, LLC | 5,345,672 | 2.00% | $45.02M | +536,568 | 0.00% |
| ARK Investment Management LLC | 5,085,456 | 1.90% | $42.82M | −142,047 | 0.28% |
| Nuveen, LLC | 5,056,372 | 1.89% | $42.57M | +1,306,436 | 0.01% |
| FMR LLC | 4,910,388 | 1.84% | $41.35M | +4,470,379 | 0.00% |
| AWM Investment Company, Inc. | 4,430,593 | 1.66% | $37.31M | – | 3.24% |
| Sei Investments Co | 2,937,872 | 1.10% | $24.74M | +638,978 | 0.02% |
| Goldman Sachs Group Inc | 2,761,860 | 1.03% | $23.25M | +1,909,694 | 0.00% |
| First Light Asset Management, LLC | 2,642,404 | 0.99% | $22.25M | −17,763 | 1.35% |
| Deutsche Bank AG\ | 2,580,435 | 0.96% | $21.73M | +316,926 | 0.01% |
| Vanguard Portfolio Management LLC | 2,382,239 | 0.89% | $20.06M | +545,358 | 0.00% |
| Millennium Management LLC | 2,154,551 | 0.81% | $18.14M | −1,334,254 | 0.01% |
| Bank Of America Corp /De/ | 2,138,268 | 0.80% | $18.00M | −2,026,954 | 0.00% |
| Dimensional Fund Advisors LP | 1,946,435 | 0.73% | $16.40M | −411,746 | 0.00% |
Institutional buying and selling by quarter
Positions opened, added to, reduced and closed by 13F filers
| Quarter | Holders | Shares held | % of shares | New / added | Reduced / closed | Shares bought | Shares sold |
|---|---|---|---|---|---|---|---|
| Q2 2026 | 245 | 158M | 59.2% | 47 / 98 | 58 / 36 | 34M | 15M |
| Q1 2026 | 239 | 139M | 52.0% | 59 / 75 | 55 / 20 | 37M | 6M |
| Q4 2025 | 204 | 119M | 44.5% | 48 / 71 | 43 / 17 | 28M | 7M |
| Q3 2025 | 176 | 98M | 36.7% | 34 / 53 | 46 / 45 | 10M | 29M |
| Q2 2025 | 189 | 118M | 44.0% | 33 / 75 | 39 / 50 | 29M | 13M |
| Q1 2025 | 206 | 102M | 38.3% | 59 / 68 | 38 / 25 | 35M | 5M |
| Q4 2024 | 174 | 73M | 27.2% | 52 / 43 | 35 / 23 | 22M | 8M |
| Q3 2024 | 150 | 60M | 22.6% | 25 / 30 | 44 / 40 | 10M | 13M |
| Q2 2024 | 168 | 65M | 24.4% | 29 / 36 | 55 / 31 | 8M | 20M |
| Q1 2024 | 171 | 77M | 28.7% | 27 / 31 | 68 / 26 | 5M | 7M |
| Q4 2023 | 170 | 80M | 29.7% | 26 / 48 | 50 / 41 | 6M | 8M |
| Q3 2023 | 186 | 82M | 30.6% | 25 / 51 | 43 / 23 | 5M | 10M |
Top mutual fund and ETF holders
Latest monthly portfolio reports (Form N-PORT)
152 funds held BFLY in Q2 2026, 58% of their shares through ETFs. Each fund counts once per quarter, from its quarter-end report.
| Fund | Shares | % of BFLY | Value | % of fund | As of |
|---|---|---|---|---|---|
| Vanguard Total Stock Market Index Fund | 5,909,307 | 2.21% | $49.76M | 0.00% | Jun 30, 2026 |
| iShares Russell 2000 ETF | 5,403,922 | 2.02% | $45.50M | 0.05% | Jun 30, 2026 |
| ARK Genomic Revolution ETF | 4,770,809 | 1.78% | $33.92M | 2.18% | Jul 31, 2026 |
| Hood River New Opportunities Fund | 4,266,210 | 1.60% | $35.92M | 2.84% | Jun 30, 2026 |
| Vanguard Extended Market Index Fund | 2,457,583 | 0.92% | $20.69M | 0.02% | Jun 30, 2026 |
| Fidelity Small Cap Index Fund | 2,302,652 | 0.86% | $16.37M | 0.05% | Jul 31, 2026 |
| Nuveen Quant Small Cap Equity Fund | 2,027,730 | 0.76% | $14.42M | 0.36% | Jul 31, 2026 |
| iShares Russell 2000 Growth ETF | 1,943,403 | 0.73% | $16.36M | 0.11% | Jun 30, 2026 |
| DWS Small Cap Core Fund | 1,900,000 | 0.71% | $16.00M | 1.38% | Jun 30, 2026 |
| Fidelity Small Cap Growth Fund | 1,812,470 | 0.68% | $12.89M | 0.15% | Jul 31, 2026 |
| Fidelity Enhanced Small Cap Core ETF | 1,562,912 | 0.58% | $13.16M | 0.23% | Jun 30, 2026 |
| Calamos Timpani Small Cap Growth Fund | 1,359,788 | 0.51% | $9.67M | 1.26% | Jul 31, 2026 |
| Fidelity Extended Market Index Fund | 1,066,766 | 0.40% | $4.85M | 0.01% | May 31, 2026 |
| College Retirement Equities Fund - Total Global Stock Account | 1,016,840 | 0.38% | $8.56M | 0.01% | Jun 30, 2026 |
| Vanguard Russell 2000 Index Fund | 1,007,500 | 0.38% | $4.58M | 0.03% | May 31, 2026 |
Officers, directors and major owners
People who filed Forms 3, 4 or 5 in the last two years
| Name | Role | Shares owned | % of shares | Latest filing |
|---|---|---|---|---|
| Joseph Devivo | President & CEO, Director | 7,221,330 | 2.70% | Nov 3, 2026 |
| John N. Doherty | EVP, CFO | 1,347,276 | 0.50% | Nov 13, 2026 |
| Megan Carlson | CAO and SVP, Finance | 401,971 | 0.15% | Oct 6, 2026 |
| Steve Cashman | Chief Business Officer | 1,490,295 | 0.56% | Sep 9, 2026 |
| Nicholas Caezza | Deputy General Counsel | 305,166 | 0.11% | Sep 4, 2026 |
| Victor Ku | Chief Technology Officer | 1,015,099 | 0.38% | Jul 21, 2026 |
| Heather C. Getz | EVP, CFO & COO | 2,919,274 | 1.09% | May 7, 2025 |
| Andrei G. Stoica | Chief Technology Officer | 1,600,182 | 0.60% | Apr 3, 2025 |
| Michael Noonen | Director | 37,037 | 0.01% | Oct 15, 2026 |
| Larry Robbins | Director | 3,355,139 | 1.25% | Aug 17, 2026 |
| S. Louise Phanstiel | Director | 691,413 | 0.26% | Aug 17, 2026 |
| Jonathan M. Rothberg | Director | 22,259,514 | 8.32% | Jul 24, 2026 |
| Caroll H. Neubauer | Director | 98,617 | 0.04% | Jun 22, 2026 |
| Elazer R. Edelman | Director | 392,893 | 0.15% | Jun 22, 2026 |
| Erica Schwartz | Director | 401,699 | 0.15% | Jun 22, 2026 |
| Dawn Carfora | Director | 265,505 | 0.10% | Nov 5, 2025 |
Insider trades
Common stock transactions reported on Form 4, newest first
| Insider | Date | Transaction | Shares | Price | Value | Shares after |
|---|---|---|---|---|---|---|
| John N. Doherty EVP, CFO | Nov 11, 2026 | Sale(10b5-1 plan) | −50,000 | $7.00 | $350.00K | 1,347,276 |
| Joseph Devivo President & CEO, Director | Oct 30, 2026 | Sale | −90,600 | $7.01 | $634.92K | 7,221,330 |
| Michael Noonen Director | Oct 13, 2026 | Award | +37,037 | – | – | 37,037 |
| Joseph Devivo President & CEO, Director | Oct 6, 2026 | Sale(10b5-1 plan) | −35,790 | $10.02 | $358.62K | 7,311,930 |
| Megan Carlson CAO and SVP, Finance | Oct 2, 2026 | Sale | −10,114 | $8.74 | $88.45K | 401,971 |
| Joseph Devivo President & CEO, Director | Sep 23, 2026 | Sale(10b5-1 plan) | −3,169 | $10.02 | $31.75K | 7,347,720 |
| Joseph Devivo President & CEO, Director | Sep 22, 2026 | Sale(10b5-1 plan) | −2,811 | $10.00 | $28.11K | 7,350,889 |
| Steve Cashman Chief Business Officer | Sep 4, 2026 | Sale | −140,112 | $7.30 | $1.02M | 1,490,295 |
| Megan Carlson CAO and SVP, Finance | Sep 4, 2026 | Sale | −13,804 | $7.30 | $100.77K | 412,085 |
| Nicholas Caezza Deputy General Counsel | Sep 2, 2026 | Sale | −1,709 | $8.15 | $13.93K | 305,166 |
| Joseph Devivo President & CEO, Director | Aug 24, 2026 | Gift | −250,000 | – | – | 7,353,700 |
| Larry Robbins Director | Aug 17, 2026 | Sale | −582,500 | $8.97 | $5.23M | 2,964,187 |
| S. Louise Phanstiel Director | Aug 14, 2026 | Buy | +115,200 | $8.68 | $999.94K | 300,461 |
| Larry Robbins Director | Aug 14, 2026 | Sale | −824,700 | $8.70 | $7.17M | 3,546,687 |
| Larry Robbins Director | Aug 13, 2026 | Sale | −215,233 | $9.54 | $2.05M | 12,243,530 |
| Larry Robbins Director | Aug 13, 2026 | Sale | −500,000 | $9.24 | $4.62M | 11,743,530 |
| Larry Robbins Director | Aug 13, 2026 | Sale | −175,300 | $8.86 | $1.55M | 4,371,387 |
| Nicholas Caezza Deputy General Counsel | Aug 11, 2026 | Sale | −10,000 | $9.75 | $97.50K | 300,307 |
| Joseph Devivo President & CEO, Director | Aug 10, 2026 | Sale(10b5-1 plan) | −68,346 | $10.01 | $684.14K | 7,603,700 |
| Larry Robbins Director | Aug 3, 2026 | Sale | −156,163 | $8.10 | $1.26M | 12,458,763 |
| Megan Carlson CAO and SVP, Finance | Jul 31, 2026 | Sale | −68,852 | $7.86 | $541.18K | 425,889 |
| Larry Robbins Director | Jul 31, 2026 | Sale | −1,720,129 | $7.39 | $12.71M | 12,614,926 |
| Jonathan M. Rothberg Director | Jul 22, 2026 | Sale(10b5-1 plan) | −54,143 | $6.47 | $350.31K | 0 |
| Jonathan M. Rothberg Director | Jul 22, 2026 | Sale(10b5-1 plan) | −72,724 | $6.47 | $470.52K | 0 |
| Jonathan M. Rothberg Director | Jul 22, 2026 | Sale(10b5-1 plan) | −496,680 | $6.47 | $3.21M | 0 |
| Jonathan M. Rothberg Director | Jul 22, 2026 | Sale(10b5-1 plan) | −36,366 | $6.47 | $235.29K | 0 |
| Jonathan M. Rothberg Director, 10% owner | Jul 21, 2026 | Sale(10b5-1 plan) | −753,320 | $6.74 | $5.08M | 496,680 |
| Jonathan M. Rothberg Director, 10% owner | Jul 20, 2026 | Sale(10b5-1 plan) | −1,177,276 | $6.61 | $7.78M | 72,724 |
| John N. Doherty EVP, CFO | Jul 20, 2026 | Sale | −57,136 | $6.56 | $374.81K | 1,397,276 |
| Joseph Devivo President & CEO, Director | Jul 20, 2026 | Sale | −211,798 | $6.56 | $1.39M | 7,672,046 |
| Victor Ku Chief Technology Officer | Jul 20, 2026 | Sale | −48,540 | $6.56 | $318.42K | 1,015,099 |
| Jonathan M. Rothberg Director, 10% owner | Jul 17, 2026 | Sale(10b5-1 plan) | −1,195,857 | $6.60 | $7.89M | 54,143 |
| Jonathan M. Rothberg Director, 10% owner | Jul 16, 2026 | Sale(10b5-1 plan) | −253,867 | $7.09 | $1.80M | 105,881 |
| Jonathan M. Rothberg Director, 10% owner | Jul 16, 2026 | Sale(10b5-1 plan) | −1,213,634 | $7.09 | $8.60M | 36,366 |
| Jonathan M. Rothberg Director, 10% owner | Jul 15, 2026 | Sale(10b5-1 plan) | −1,730,319 | $7.32 | $12.67M | 359,748 |
| Jonathan M. Rothberg Director, 10% owner | Jul 14, 2026 | Sale(10b5-1 plan) | −815,632 | $7.72 | $6.30M | 2,090,067 |
| John N. Doherty EVP, CFO | Jul 7, 2026 | Sale | −55,229 | $7.87 | $434.65K | 1,454,412 |
| Joseph Devivo President & CEO, Director | Jul 7, 2026 | Sale | −204,725 | $7.87 | $1.61M | 7,883,844 |
| Victor Ku Chief Technology Officer | Jul 7, 2026 | Sale | −35,649 | $7.87 | $280.56K | 1,063,639 |
| Megan Carlson CAO and SVP, Finance | Jul 2, 2026 | Sale | −41,303 | $7.96 | $328.77K | 465,906 |
| Larry Robbins Director | Jun 22, 2026 | Award | +25,447 | – | – | 390,952 |
| Erica Schwartz Director | Jun 22, 2026 | Award | +25,447 | – | – | 401,699 |
| Jonathan M. Rothberg Director, 10% owner | Jun 22, 2026 | Award | +25,447 | – | – | 2,905,699 |
| S. Louise Phanstiel Director | Jun 22, 2026 | Award | +25,447 | – | – | 390,952 |
| Elazer R. Edelman Director | Jun 22, 2026 | Award | +25,447 | – | – | 392,893 |
| Caroll H. Neubauer Director | Jun 22, 2026 | Award | +25,447 | – | – | 98,617 |
| Steve Cashman Chief Business Officer | Jun 8, 2026 | Sale | −294,680 | $4.66 | $1.37M | 1,630,407 |
| Steve Cashman Chief Business Officer | Jun 5, 2026 | Sale | −104,781 | $4.96 | $519.71K | 1,925,087 |
| Nicholas Caezza Deputy General Counsel | Jun 2, 2026 | Sale | −1,733 | $4.52 | $7.83K | 310,307 |
| Caroll H. Neubauer Director | May 19, 2026 | Award | +73,170 | – | – | 73,170 |
| Megan Carlson CAO and SVP, Finance | May 1, 2026 | Sale | −110,422 | $4.75 | $524.50K | 507,209 |
| Steve Cashman Chief Business Officer | Apr 29, 2026 | Sale | −147,518 | $4.91 | $724.31K | 2,029,868 |
| Steve Cashman Chief Business Officer | Apr 16, 2026 | Sale(10b5-1 plan) | −200,000 | $5.22 | $1.04M | 2,177,386 |
| Joseph Devivo President & CEO, Director | Mar 5, 2026 | Sale | −482,149 | $3.71 | $1.79M | 8,030,899 |
| Megan Carlson CAO and SVP, Finance | Mar 3, 2026 | Sale | −41,978 | $3.71 | $155.74K | 617,631 |
| Nicholas Caezza Deputy General Counsel | Mar 3, 2026 | Sale | −14,209 | $3.71 | $52.72K | 312,040 |
| Steve Cashman Chief Business Officer | Mar 3, 2026 | Sale | −42,540 | $3.71 | $157.82K | 2,377,386 |
| Joseph Devivo President & CEO, Director | Mar 3, 2026 | Sale | −161,275 | $3.71 | $598.33K | 8,513,048 |
| Megan Carlson CAO and SVP, Finance | Mar 2, 2026 | Award | +97,883 | – | – | 659,609 |
| Nicholas Caezza Deputy General Counsel | Mar 2, 2026 | Award | +89,359 | – | – | 326,249 |
Awards, option exercises, tax withholding and gifts are shown alongside open-market buys and sales. Each name links to the filing on SEC EDGAR.
Short interest
Shares sold short and not yet bought back, as of Oct 30, 2026 (FINRA, reported twice a month)
Short % of float
16.18%
34M shares short
Days to cover
7.1
At 5M shares a day
Change since last report
+2.0%
From 34M shares
Short volume, 20 days
65.1%
Of volume reported to FINRA
Shares sold short, last 12 months
Short sale volume counts trades marked short on any given day, including market-maker hedging, so it runs far higher than the share of Butterfly Network's stock actually held short. Settlement fails (shares not delivered on time) peaked at 1,559,238 shares on Aug 18, 2026 over the last 90 days.
Planned insider sales
Notices of proposed sale filed on Form 144 before shares are sold
| Seller | Filed | Shares | Market value | Planned sale | Acquired through |
|---|---|---|---|---|---|
| Joseph Devivo President and CEO | Oct 30, 2026 | 90,600 | $634.20K | Oct 30, 2026 | Restricted Stock Units |
| Joseph Devivo Officer, Director | Oct 6, 2026 | 35,790 | $358.61K | Oct 6, 2026 | Restricted Stock Vesting |
| Megan Carlson Officer | Oct 2, 2026 | 10,114 | $88.45K | Oct 2, 2026 | Restricted Stock Vesting |
| Joseph Devivo Officer, Director | Sep 23, 2026 | 3,169 | $31.76K | Sep 23, 2026 | Restricted Stock Vesting |
| Erica Schwartz Former Director | Sep 23, 2026 | 323,020 | $3.23M | Sep 23, 2026 | Restricted Stock Vesting |
| Erica Schwartz Former Director | Sep 22, 2026 | 78,679 | $786.79K | Sep 22, 2026 | Restricted Stock Vesting |
| Joseph Devivo Officer, Director | Sep 22, 2026 | 2,811 | $28.11K | Sep 22, 2026 | Restricted Stock Vesting |
| Steve Cashman Officer | Sep 4, 2026 | 140,112 | $1.02M | Sep 4, 2026 | Restricted Stock Vesting |
| Megan Carlson Officer | Sep 4, 2026 | 13,804 | $100.79K | Sep 4, 2026 | Restricted Stock Vesting |
| Nicholas Caezza Officer | Sep 2, 2026 | 1,709 | $13.93K | Sep 2, 2026 | Restricted Stock Vesting |
| Nicholas Caezza Officer | Aug 11, 2026 | 10,000 | $97.50K | Aug 11, 2026 | Restricted Stock Vesting |
| Dawn Carfora Officer | Aug 10, 2026 | 8,770 | $85.51K | Aug 10, 2026 | Vesting of restricted stock unit awards |
| Joseph Devivo Officer, Director | Aug 10, 2026 | 68,346 | $684.08K | Aug 10, 2026 | Restricted Stock Vesting |
| Megan Carlson Officer | Jul 31, 2026 | 68,852 | $541.41K | Jul 31, 2026 | Stock Option Exercise |
| Larry Robbins Director | Jul 31, 2026 | 1,876,292 | $13.34M | Jul 31, 2026 | Private placement |
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