Comparable stake leader
Ph.D. Jonathan M. Rothberg
SEC ownership of Butterfly Network, Inc.
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001804176.
Disclosed value leader
FMR LLC
Comparable rows
50/50
Latest evidence
14 Aug 2026
- Public ticker
- BFLY on NYSE
- Parsed ownership sources
-
13D/G, 3/4/5, and 13F
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
- Largest SEC-reported holder
-
Ph.D. Jonathan M. Rothberg
Ranking: Comparable ownership first, then disclosed value
- Comparable ownership rows
-
50 of 50
Meaning: Rows with safely comparable ownership %
- Latest 13D/G holder
-
Ph.D. Jonathan M. Rothberg
Source: Latest parsed Schedule 13D/G stake
- Latest parsed ownership date
-
14 Aug 2026
Freshness: Most recent filing date in this holder set
- Issuer CIK
- 0001804176
- Issuer location
- Burlington, MA
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
3 signals
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
Ownership snapshot
Top shareholders of Butterfly Network, Inc. (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
Ph.D. Jonathan M. Rothberg
Disclosed value leader
FMR LLC
Comparable rows
50/50
Latest evidence
14 Aug 2026
13D/G
3/4/5
13F
Lead comparable stake: 100%
13D/G row: Ph.D. Jonathan M. Rothberg
Showing 1-8 of 50 holder rows.
Quick read
Ph.D. Jonathan M. Rothberg leads the comparable SEC ownership view at 100%.
50 of 50 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens Ph.D. Jonathan M. Rothberg's linked filing trail.
Comparable ownership
Top 5
Ph.D. Jonathan M. Rothberg
100%
FMR LLC
12%
BlackRock, Inc.
7.8%
GLENVIEW CAPITAL MANAGEMENT, LLC
6.2%
Hood River Capital Management LLC
5.6%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-8 of 50 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| Ph.D. Jonathan M. Rothberg |
13D/G
3/4/5
Rothberg Jonathan M. · Director
|
100%
|
$171,844,035
21,426,937 shares
|
-$5,292,502 | 14 Aug 2026 |
| FMR LLC |
13D/G
13F
Company
|
12%
|
$232,197,421
28,952,297 shares
|
$0 | 31 Jul 2026 |
| BlackRock, Inc. |
13F
13D/G
Company
|
7.8%
from 13D/G
|
$158,476,717
18,821,463 shares
|
— | 30 Jun 2026 |
| GLENVIEW CAPITAL MANAGEMENT, LLC |
13D/G
13F
ROBBINS LARRY · Company
|
6.2%
|
$121,264,918
15,120,314 shares
|
-$33,271,596 | 13 Aug 2026 |
| Hood River Capital Management LLC |
13F
13D/G
Company
|
5.6%
from 13D/G
|
$111,060,895
13,190,130 shares
|
— | 30 Jun 2026 |
| VANGUARD GROUP INC |
13D/G
The Vanguard Group
|
5%
|
$43,000,682
11,315,969 shares
|
$0 | 31 Dec 2025 |
| Fosun Industrial Co., Ltd |
13D/G
Fosun Industrial Co., Limited
|
4.7%
|
$40,723,194
10,716,630 shares
|
$0 | 31 Dec 2025 |
| ARK Investment Management LLC |
13F
13D/G
Company
|
4.7%
from 13D/G
|
$42,819,541
5,085,456 shares
|
— | 30 Jun 2026 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
Forms 3/4/5 flow
Insider trading overview
Net insider flow leans to selling over the last 12 months. Net value: -$111,662,163.
Buys
$13,153,926
Insiders: 3
Sells
$124,816,089
Insiders: 9
Net
-$111,662,163
Shares: -16,466,841
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 4,730,372
Shares: 21,197,213
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 115,200 | 13,176,615 | $999,510 | $96,953,644 | -$95,954,134 |
| 3-6 | 0 | 1,450,091 | $0 | $6,133,378 | -$6,133,378 |
| 6-9 | 4,565,172 | 6,199,879 | $12,072,463 | $20,880,177 | -$8,807,713 |
| 9-12 | 50,000 | 370,628 | $81,953 | $848,890 | -$766,937 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-20 of 28 reporting-owner rows connected to Butterfly Network, Inc.. Open a relationship link for the CIK-to-CIK filing trail.
Rows
28
Largest Forms 3/4/5 holder
Joseph Devivo
Net 12M change
-$111,662,163
Latest report
14 Aug 2026
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Joseph Devivo | President & CEO, Director | $76,105,433 | -$6,072,213 | -7.4% | Filing P/S | 10 Aug 2026 |
| Larry Robbins | Director | $29,881,165 | -$23,102,913 | -44% | Mixed | 13 Aug 2026 |
| John N. Doherty | Evp, Cfo | $9,166,130 | -$1,049,154 | -10% | Filing P/S | 20 Jul 2026 |
| Steve Cashman | Chief Business Officer | $7,597,696 | -$5,039,176 | -40% | Filing P/S | 05 Jun 2026 |
| Ph.D. Jonathan M. Rothberg | Director | $7,010,298 | -$75,194,277 | -91% | Median | 22 Jul 2026 |
| Victor Ku | Chief Technology Officer | $6,659,049 | -$736,485 | -10% | Filing P/S | 20 Jul 2026 |
| Heather C. Getz | Evp, Cfo & Coo | $6,425,322 | Filing P/S | 05 May 2025 | ||
| S. Louise Phanstiel | Director | $5,898,704 | +$1,570,669 | +36% | Mixed | 14 Aug 2026 |
| Andrei G. Stoica | Chief Technology Officer | $3,464,394 | Filing P/S | 01 Apr 2025 | ||
| Megan Carlson | CAO and SVP, Finance | $3,348,765 | -$1,571,283 | -32% | Filing P/S | 31 Jul 2026 |
| Nicholas Caezza | Deputy General Counsel | $2,927,993 | -$165,467 | -5.3% | Filing P/S | 11 Aug 2026 |
| Erica Schwartz | Director | $1,622,863 | Mixed | 22 Jun 2026 | ||
| Elazer R. Edelman | Director | $1,587,287 | Mixed | 22 Jun 2026 | ||
| Todd Fruchterman | President and CEO, Director | $1,561,832 | Mixed | 22 Mar 2022 | ||
| Weiss Lawrence T. | CLO, GC and Corp Sec | $1,261,575 | Mixed | 05 Jul 2023 | ||
| Dawn Carfora | Director | $715,535 | -$301,864 | -30% | Filing P/S | 04 Nov 2025 |
| Darius Shahida | Chief Strategy/Bus Dev Officer | $642,506 | Mixed | 19 Dec 2022 | ||
| Stephanie Fielding | Chief Financial Officer | $609,496 | Filing P/S | 17 Mar 2022 | ||
| Stacey Pugh | Chief Commercial Officer | $582,364 | Mixed | 22 Mar 2022 | ||
| Caroll H. Neubauer | Director | $398,412 | Mixed | 22 Jun 2026 |
Recent insider transactions for Butterfly Network, Inc.
Showing up to 300 recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | SEC-reported value | SEC-reported price | Shares | Shares owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Larry Robbins | BFLY | Class A Common Stock | Sale | -16.4% | $5,225,142 | $8.97 | -582,500 | 2,964,187 | 17 Aug 2026 | See footnotes |
| Larry Robbins | BFLY | Class A Common Stock | Sale | -18.9% | $7,172,663 | $8.70 | -824,700 | 3,546,687 | 14 Aug 2026 | See footnotes |
| S. Louise Phanstiel | BFLY | Class A Common Stock | Purchase | 62.2% | $999,510 | $8.68 | 115,200 | 300,461 | 14 Aug 2026 | By The Phanstiel Trust u/a/d 2/5/02 |
| Larry Robbins | BFLY | Class A Common Stock | Sale | -16.9% | $8,224,688 | $9.24 | -890,533 | 4,371,387 | 13 Aug 2026 | See footnotes |
| Nicholas Caezza | BFLY | Class A Common Stock | Sale | -3.22% | $97,500 | $9.75 | -10,000 | 300,307 | 11 Aug 2026 | Direct |
| Joseph Devivo | BFLY | Class A Common Stock | Sale | -0.89% | $684,075 | $10.01 | -68,346 | 7,603,700 | 10 Aug 2026 | Direct |
| Larry Robbins | BFLY | Class A Common Stock | Sale | -1.24% | $1,265,670 | $8.10 | -156,163 | 12,458,763 | 03 Aug 2026 | See footnotes |
| Megan Carlson | BFLY | Class A Common Stock | Sale | -13.9% | $541,383 | $7.86 | -68,852 | 425,889 | 31 Jul 2026 | Direct |
| Larry Robbins | BFLY | Class A Common Stock | Sale | -12% | $12,716,054 | $7.39 | -1,720,129 | 12,614,926 | 31 Jul 2026 | See footnotes |
| Ph.D. Jonathan M. Rothberg | BFLY | Class B Common Stock | Sale | -100% | $235,281 | $6.47 | -36,366 | 0 | 22 Jul 2026 | By JNR TR, LLC |
| Ph.D. Jonathan M. Rothberg | BFLY | Class B Common Stock | Sale | -100% | $3,213,420 | $6.47 | -496,680 | 0 | 22 Jul 2026 | By EJR TR, LLC |
| Ph.D. Jonathan M. Rothberg | BFLY | Class B Common Stock | Sale | -100% | $470,510 | $6.47 | -72,724 | 0 | 22 Jul 2026 | By NVR TR, LLC |
| Ph.D. Jonathan M. Rothberg | BFLY | Class B Common Stock | Sale | -100% | $350,294 | $6.47 | -54,143 | 0 | 22 Jul 2026 | By GBR TR, LLC |
| Ph.D. Jonathan M. Rothberg | BFLY | Class B Common Stock | Sale | -60.3% | $5,074,288 | $6.74 | -753,320 | 496,680 | 21 Jul 2026 | By EJR TR, LLC |
| Ph.D. Jonathan M. Rothberg | BFLY | Class B Common Stock | Sale | -94.2% | $7,786,268 | $6.61 | -1,177,276 | 72,724 | 20 Jul 2026 | By NVR TR, LLC |
| Victor Ku | BFLY | Class A Common Stock | Sale | -4.56% | $318,422 | $6.56 | -48,540 | 1,015,099 | 20 Jul 2026 | Direct |
| John N. Doherty | BFLY | Class A Common Stock | Sale | -3.93% | $374,812 | $6.56 | -57,136 | 1,397,276 | 20 Jul 2026 | Direct |
| Joseph Devivo | BFLY | Class A Common Stock | Sale | -2.69% | $1,389,395 | $6.56 | -211,798 | 7,672,046 | 20 Jul 2026 | Direct |
| Ph.D. Jonathan M. Rothberg | BFLY | Class B Common Stock | Sale | -95.7% | $7,887,753 | $6.60 | -1,195,857 | 54,143 | 17 Jul 2026 | By GBR TR, LLC |
| Ph.D. Jonathan M. Rothberg | BFLY | Class B Common Stock | Sale | -97.1% | $8,603,330 | $7.09 | -1,213,634 | 36,366 | 16 Jul 2026 | By JNR TR, LLC |
| Ph.D. Jonathan M. Rothberg | BFLY | Class A Common Stock | Sale | -70.6% | $1,799,638 | $7.09 | -253,867 | 105,881 | 16 Jul 2026 | Direct |
| Ph.D. Jonathan M. Rothberg | BFLY | Class A Common Stock | Sale | -82.8% | $12,670,780 | $7.32 | -1,730,319 | 359,748 | 15 Jul 2026 | Direct |
| Ph.D. Jonathan M. Rothberg | BFLY | Class A Common Stock | Sale | -28.1% | $6,294,885 | $7.72 | -815,632 | 2,090,067 | 14 Jul 2026 | Direct |
| Victor Ku | BFLY | Class A Common Stock | Sale | -3.24% | $280,665 | $7.87 | -35,649 | 1,063,639 | 07 Jul 2026 | Direct |
| John N. Doherty | BFLY | Class A Common Stock | Sale | -3.66% | $434,818 | $7.87 | -55,229 | 1,454,412 | 07 Jul 2026 | Direct |
| Joseph Devivo | BFLY | Class A Common Stock | Sale | -2.53% | $1,611,800 | $7.87 | -204,725 | 7,883,844 | 07 Jul 2026 | Direct |
| Megan Carlson | BFLY | Class A Common Stock | Sale | -8.14% | $328,937 | $7.96 | -41,303 | 465,906 | 02 Jul 2026 | Direct |
| Erica Schwartz | BFLY | Class A Common Stock | Award | 6.76% | 25,447 | 401,699 | 22 Jun 2026 | Direct | ||
| Ph.D. Jonathan M. Rothberg | BFLY | Class A Common Stock | Award | 0.88% | 25,447 | 2,905,699 | 22 Jun 2026 | Direct | ||
| Larry Robbins | BFLY | Class A Common Stock | Award | 6.96% | 25,447 | 390,952 | 22 Jun 2026 | Direct | ||
| S. Louise Phanstiel | BFLY | Class A Common Stock | Award | 6.96% | 25,447 | 390,952 | 22 Jun 2026 | Direct | ||
| Caroll H. Neubauer | BFLY | Class A Common Stock | Award | 34.8% | 25,447 | 98,617 | 22 Jun 2026 | Direct | ||
| Elazer R. Edelman | BFLY | Class A Common Stock | Award | 6.93% | 25,447 | 392,893 | 22 Jun 2026 | Direct | ||
| Steve Cashman | BFLY | Class A Common Stock | Sale | -15.3% | $1,373,209 | $4.66 | -294,680 | 1,630,407 | 08 Jun 2026 | Direct |
| Steve Cashman | BFLY | Class A Common Stock | Sale | -5.16% | $520,133 | $4.96 | -104,781 | 1,925,087 | 05 Jun 2026 | Direct |
| Nicholas Caezza | BFLY | Class A Common Stock | Sale | -0.56% | $7,831 | $4.52 | -1,733 | 310,307 | 02 Jun 2026 | Direct |
| Caroll H. Neubauer | BFLY | Class A Common Stock | Award | 73,170 | 73,170 | 19 May 2026 | Direct | |||
| Megan Carlson | BFLY | Class A Common Stock | Sale | -17.9% | $524,394 | $4.75 | -110,422 | 507,209 | 01 May 2026 | Direct |
| Steve Cashman | BFLY | Class A Common Stock | Sale | -6.78% | $724,166 | $4.91 | -147,518 | 2,029,868 | 29 Apr 2026 | Direct |
| Steve Cashman | BFLY | Class A Common Stock | Sale | -8.41% | $1,044,400 | $5.22 | -200,000 | 2,177,386 | 16 Apr 2026 | Direct |
| Joseph Devivo | BFLY | Class A Common Stock | Sale | -5.66% | $1,788,291 | $3.71 | -482,149 | 8,030,899 | 05 Mar 2026 | Direct |
| Steve Cashman | BFLY | Class A Common Stock | Sale | -1.76% | $157,908 | $3.71 | -42,540 | 2,377,386 | 03 Mar 2026 | Direct |
| Joseph Devivo | BFLY | Class A Common Stock | Sale | -1.86% | $598,653 | $3.71 | -161,275 | 8,513,048 | 03 Mar 2026 | Direct |
| Nicholas Caezza | BFLY | Class A Common Stock | Sale | -4.36% | $52,744 | $3.71 | -14,209 | 312,040 | 03 Mar 2026 | Direct |
| Megan Carlson | BFLY | Class A Common Stock | Sale | -6.36% | $155,822 | $3.71 | -41,978 | 617,631 | 03 Mar 2026 | Direct |
| John N. Doherty | BFLY | Class A Common Stock | Award | 22.3% | 274,953 | 1,509,641 | 02 Mar 2026 | Direct | ||
| Victor Ku | BFLY | Class A Common Stock | Award | 35.4% | 287,326 | 1,099,288 | 02 Mar 2026 | Direct | ||
| Steve Cashman | BFLY | Class A Common Stock | Award | 25.3% | 488,042 | 2,419,926 | 02 Mar 2026 | Direct | ||
| Joseph Devivo | BFLY | Class A Common Stock | Award | 19.6% | 1,424,534 | 8,674,323 | 02 Mar 2026 | Direct | ||
| Nicholas Caezza | BFLY | Class A Common Stock | Award | 37.7% | 89,359 | 326,249 | 02 Mar 2026 | Direct |
* marks a reported price that did not pass the local price check.