Comparable stake leader
BERKSHIRE HATHAWAY INC
SEC ownership of Chubb Ltd
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0000896159.
Disclosed value leader
BERKSHIRE HATHAWAY INC
Comparable rows
50/50
Latest evidence
21 May 2026
- Public ticker
- CB on NYSE
- Parsed ownership sources
- 13F, 13D/G, and 3/4/5
- Largest SEC-reported holder
- BERKSHIRE HATHAWAY INC
- Latest 13D/G holder
- BERKSHIRE HATHAWAY INC
- Latest parsed ownership date
- 21 May 2026
- Issuer CIK
- 0000896159
- Issuer location
- Zurich, Switzerland
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
2 signals
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
Ownership snapshot
Top shareholders of Chubb Ltd (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
BERKSHIRE HATHAWAY INC
Disclosed value leader
BERKSHIRE HATHAWAY INC
Comparable rows
50/50
Latest evidence
21 May 2026
13F
13D/G
3/4/5
Lead comparable stake: 8%
13D/G row: BERKSHIRE HATHAWAY INC
Showing 1-8 of 50 holder rows.
Quick read
BERKSHIRE HATHAWAY INC leads the comparable SEC ownership view at 8%.
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 BERKSHIRE HATHAWAY INC's linked filing trail.
Comparable ownership
Top 5
BERKSHIRE HATHAWAY INC
8%
VANGUARD CAPITAL MANAGEMENT LLC
6.9%
Michael G. Atieh
0.01%
Olivier Steimer
0.01%
Robert W. Scully
0.01%
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 |
|---|---|---|---|---|---|
| BERKSHIRE HATHAWAY INC |
13F
13D/G
Company · Warren E. Buffett
|
8%
from 13D/G
|
$11,162,836,215
34,249,183 shares
|
— | 31 Mar 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC |
13D/G
13F
Vanguard Capital Management · Company
|
6.9%
|
$8,757,630,239
26,869,666 shares
|
$0 | 31 Mar 2026 |
| Michael G. Atieh |
3/4/5
Director
|
0.01%
|
$13,185,892
40,014 shares
|
-$345,176 | 21 May 2026 |
| Olivier Steimer |
3/4/5
Director
|
0.01%
|
$8,513,131
26,120 shares
|
-$658,600 | 21 May 2026 |
| Robert W. Scully |
3/4/5
Director
|
0.01%
|
$7,767,563
23,832 shares
|
— | 21 May 2026 |
| Robert J. Hugin |
3/4/5
Director
|
0.01%
|
$7,084,414
21,736 shares
|
— | 21 May 2026 |
| Michael P. Connors |
3/4/5
Director
|
0%
|
$5,965,496
18,303 shares
|
— | 21 May 2026 |
| Theodore Shasta |
3/4/5
Director
|
0%
|
$5,237,369
16,069 shares
|
— | 21 May 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: -$52,246,014.
Buys
$114,665
Insiders: 1
Sells
$52,360,679
Insiders: 10
Net
-$52,246,014
Shares: -166,144
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 425
Shares: 166,569
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 0 | 29,464 | $0 | $9,495,411 | -$9,495,411 |
| 3-6 | 0 | 72,857 | $0 | $24,227,944 | -$24,227,944 |
| 6-9 | 0 | 58,197 | $0 | $16,883,540 | -$16,883,540 |
| 9-12 | 425 | 6,051 | $114,665 | $1,753,785 | -$1,639,120 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-20 of 34 reporting-owner rows connected to Chubb Ltd. Open a relationship link for the CIK-to-CIK filing trail.
Rows
34
Largest Forms 3/4/5 holder
Evan G. Greenberg
Net 12M change
-$50,994,411
Latest report
08 Jun 2026
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Evan G. Greenberg | Chairman & CEO | $164,102,820 | -$9,993,141 | -5.7% | Median | 21 May 2026 |
| John W. Keogh | President &COO | $69,020,024 | -$7,394,740 | -9.7% | Median | 27 May 2026 |
| Philip V Bancroft | Executive Vice President* | $55,897,351 | Mixed | 19 May 2021 | ||
| Sean Ringsted | EVP, Chief Risk Officer and* | $49,081,342 | Mixed | 23 Feb 2023 | ||
| John J. Lupica | Vice Chrm, Chubb Group* | $46,662,660 | -$13,112,584 | -22% | Mixed | 14 Nov 2025 |
| Timothy Alan Boroughs | Executive Vice President* | $26,095,909 | -$12,619,078 | -33% | Median | 21 May 2026 |
| Paul J. Krump | Vice Chairman, Chubb Group* | $18,373,447 | Mixed | 18 May 2022 | ||
| Joseph F. Wayland | Executive Vice President and* | $13,770,983 | -$4,304,060 | -24% | Median | 21 May 2026 |
| Frances D. O'Brien | Chief Risk Officer | $13,317,825 | Median | 21 May 2026 | ||
| Michael G. Atieh | Director | $13,185,892 | -$345,176 | -2.6% | Filing P/S | 21 May 2026 |
| Mary A. Cirillo | Director | $9,738,115 | Mixed | 17 May 2023 | ||
| Peter C. Enns | Executive Vice President and* | $9,684,358 | Median | 21 May 2026 | ||
| Juan Luis Ortega | Executive Vice President* | $9,294,884 | -$253,666 | -2.7% | Filing P/S | 08 Jun 2026 |
| Olivier Steimer | Director | $8,513,131 | -$658,600 | -7.2% | Median | 21 May 2026 |
| Bryce L. Johns | Senior Vice President,* | $7,994,085 | -$504,925 | -5.9% | Median | 21 May 2026 |
| Robert W. Scully | Director | $7,767,563 | Median | 21 May 2026 | ||
| Robert J. Hugin | Director | $7,084,414 | Median | 21 May 2026 | ||
| Sheila P. Burke | Director | $6,675,958 | Mixed | 21 May 2026 | ||
| Paul McNamee | Executive Vice President* | $6,078,268 | Median | 21 May 2026 | ||
| Michael P. Connors | Director | $5,965,496 | Median | 21 May 2026 |
Recent insider transactions for Chubb Ltd
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 |
|---|---|---|---|---|---|---|---|---|---|---|
| Juan Luis Ortega | CB | Common Shares | Sale | -11.9% | $1,251,603 | $322.08 | -3,886 | 28,859 | 08 Jun 2026 | Direct |
| Juan Luis Ortega | CB | Common Shares | Options Exercise | 13.5% | 3,886 | 32,745 | 08 Jun 2026 | Direct | ||
| Juan Luis Ortega | CB | Options to Acquire Common Shares | Options Exercise | -6.06% | -3,886 | 60,234 | 08 Jun 2026 | Direct | ||
| John W. Keogh | CB | Common Shares | Gift | -0.95% | -1,352 | 140,970 | 28 May 2026 | Direct | ||
| John W. Keogh | CB | Common Shares | Gift | 61,000 | 61,000 | 27 May 2026 | By Trust | |||
| John W. Keogh | CB | Common Shares | Gift | -30% | -61,000 | 142,322 | 27 May 2026 | Direct | ||
| John W. Keogh | CB | Common Shares | Sale | -10.2% | $7,394,740 | $321.51 | -23,000 | 203,322 | 27 May 2026 | Direct |
| David H. Sidwell | CB | Common Shares | Tax liability | -1.24% | -193 | 15,321 | 21 May 2026 | Direct | ||
| David H. Sidwell | CB | Common Shares | Award | 5.13% | 757 | 15,514 | 21 May 2026 | Direct | ||
| Robert J. Hugin | CB | Common Shares | Award | 5.54% | 1,135 | 21,626 | 21 May 2026 | Direct | ||
| Nancy Buese | CB | Common Shares | Tax liability | -7.89% | -321 | 3,746 | 21 May 2026 | Direct | ||
| Nancy Buese | CB | Common Shares | Award | 38.7% | 1,135 | 4,067 | 21 May 2026 | Direct | ||
| Olivier Steimer | CB | Common Shares | Tax liability | -0.16% | -41 | 26,120 | 21 May 2026 | Direct | ||
| Olivier Steimer | CB | Common Shares | Award | 2.67% | 681 | 26,161 | 21 May 2026 | Direct | ||
| Michael P. Connors | CB | Common Shares | Tax liability | -1.04% | -193 | 18,303 | 21 May 2026 | Direct | ||
| Michael P. Connors | CB | Common Shares | Award | 3.82% | 681 | 18,496 | 21 May 2026 | Direct | ||
| Evan G. Greenberg | CB | Common Shares | Tax liability | -13.7% | -73,555 | 461,791 | 21 May 2026 | Direct | ||
| Evan G. Greenberg | CB | Common Shares | Disposed to Issuer | -2.06% | -11,253 | 535,346 | 21 May 2026 | Direct | ||
| Bryce L. Johns | CB | Common Shares | Disposed to Issuer | -0.98% | -243 | 24,527 | 21 May 2026 | Direct | ||
| Theodore Shasta | CB | Common Shares | Tax liability | -1.19% | -193 | 16,069 | 21 May 2026 | Direct | ||
| Theodore Shasta | CB | Common Shares | Award | 4.37% | 681 | 16,262 | 21 May 2026 | Direct | ||
| Timothy Alan Boroughs | CB | Common Shares | Tax liability | -46% | -4,751 | 5,588 | 21 May 2026 | Direct | ||
| Timothy Alan Boroughs | CB | Common Shares | Disposed to Issuer | -8.25% | -930 | 10,339 | 21 May 2026 | Direct | ||
| Joseph F. Wayland | CB | Common Shares | Tax liability | -22.4% | -12,164 | 42,251 | 21 May 2026 | Direct | ||
| Joseph F. Wayland | CB | Common Shares | Disposed to Issuer | -3.2% | -1,797 | 54,415 | 21 May 2026 | Direct | ||
| Juan Luis Ortega | CB | Common Shares | Tax liability | -16.8% | -5,820 | 28,859 | 21 May 2026 | Direct | ||
| Juan Luis Ortega | CB | Common Shares | Disposed to Issuer | -2.6% | -924 | 34,679 | 21 May 2026 | Direct | ||
| Michael Corbat | CB | Common Shares | Tax liability | -6.16% | -193 | 2,938 | 21 May 2026 | Direct | ||
| Michael Corbat | CB | Common Shares | Award | 27.8% | 681 | 3,131 | 21 May 2026 | Direct | ||
| Peter C. Enns | CB | Common Shares | Tax liability | -28.3% | -11,730 | 29,713 | 21 May 2026 | Direct | ||
| Peter C. Enns | CB | Common Shares | Disposed to Issuer | -4.32% | -1,869 | 41,443 | 21 May 2026 | Direct | ||
| Nelson Chai | CB | Common Shares | Tax liability | -9.7% | -193 | 1,797 | 21 May 2026 | Direct | ||
| Nelson Chai | CB | Common Shares | Award | 52% | 681 | 1,990 | 21 May 2026 | Direct | ||
| Frances D. O'Brien | CB | Common Shares | Tax liability | -2.64% | -1,106 | 40,861 | 21 May 2026 | Direct | ||
| Frances D. O'Brien | CB | Common Shares | Disposed to Issuer | -0.51% | -216 | 41,967 | 21 May 2026 | Direct | ||
| John W. Keogh | CB | Common Shares | Tax liability | -11.6% | -29,556 | 226,322 | 21 May 2026 | Direct | ||
| John W. Keogh | CB | Common Shares | Disposed to Issuer | -1.93% | -5,033 | 255,878 | 21 May 2026 | Direct | ||
| Paul McNamee | CB | Common Shares | Tax liability | -6.76% | -1,352 | 18,649 | 21 May 2026 | Direct | ||
| Paul McNamee | CB | Common Shares | Disposed to Issuer | -1.39% | -282 | 20,001 | 21 May 2026 | Direct | ||
| Fred Hu | CB | Common Shares | Tax liability | -10.1% | -193 | 1,713 | 21 May 2026 | Direct | ||
| Fred Hu | CB | Common Shares | Award | 147.2% | 1,135 | 1,906 | 21 May 2026 | Direct | ||
| Michael G. Atieh | CB | Common Shares | Sale | -1.42% | $190,468 | $329.53 | -578 | 40,014 | 21 May 2026 | Direct |
| Michael G. Atieh | CB | Common Shares | Tax liability | -0.47% | -193 | 40,592 | 21 May 2026 | Direct | ||
| Michael G. Atieh | CB | Common Shares | Award | 1.7% | 681 | 40,785 | 21 May 2026 | Direct | ||
| Frances F. Townsend | CB | Common Shares | Tax liability | -3.5% | -193 | 5,314 | 21 May 2026 | Direct | ||
| Frances F. Townsend | CB | Common Shares | Award | 14.1% | 681 | 5,507 | 21 May 2026 | Direct | ||
| Robert W. Scully | CB | Common Shares | Tax liability | -1.72% | -356 | 20,397 | 21 May 2026 | Direct | ||
| Robert W. Scully | CB | Common Shares | Award | 6.44% | 1,256 | 20,753 | 21 May 2026 | Direct | ||
| Sheila P. Burke | CB | Common Shares | Tax liability | -2.2% | -193 | 8,587 | 21 May 2026 | Direct | ||
| Olivier Steimer | CB | Common Shares | Sale | -7.28% | $658,600 | $329.30 | -2,000 | 25,468 | 19 Mar 2026 | Direct |
* marks a reported price that did not pass the local price check.