Comparable stake leader
VANGUARD CAPITAL MANAGEMENT LLC
SEC ownership of COMCAST CORP
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001166691.
Disclosed value leader
BlackRock, Inc.
Comparable rows
50/50
Latest evidence
11 May 2026
- Public ticker
- CMCSA on Nasdaq, CCZ on NYSE
- Parsed ownership sources
- 13D/G, 13F, and 3/4/5
- Largest SEC-reported holder
- VANGUARD CAPITAL MANAGEMENT LLC
- Latest 13D/G holder
- VANGUARD CAPITAL MANAGEMENT LLC
- Latest parsed ownership date
- 11 May 2026
- Issuer CIK
- 0001166691
- Issuer location
- Philadelphia, PA
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 COMCAST CORP (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
VANGUARD CAPITAL MANAGEME...
Disclosed value leader
BlackRock, Inc.
Comparable rows
50/50
Latest evidence
11 May 2026
13D/G
13F
3/4/5
Lead comparable stake: 7.5%
13D/G row: VANGUARD CAPITAL MANAGEMENT LLC
Showing 1-8 of 50 holder rows.
Quick read
VANGUARD CAPITAL MANAGEMENT LLC leads the comparable SEC ownership view at 7.5%.
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 VANGUARD CAPITAL MANAGEMENT LLC's linked filing trail.
Comparable ownership
Top 5
VANGUARD CAPITAL MANAGEMENT LLC
7.5%
STATE STREET CORP
5.1%
Capital World Investors
5.1%
David C. Novak
0.01%
Jeffrey A. Honickman
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 |
|---|---|---|---|---|---|
| VANGUARD CAPITAL MANAGEMENT LLC |
13D/G
13F
Vanguard Capital Management · Company
|
7.5%
|
$7,747,494,473
269,853,517 shares
|
$0 | 31 Mar 2026 |
| STATE STREET CORP |
13D/G
13F
STATE STREET CORPORATION · Company
|
5.1%
|
$5,320,815,018
186,826,370 shares
|
$0 | 31 Dec 2025 |
| Capital World Investors |
13F
13D/G
Company
|
5.1%
from 13D/G
|
$5,229,504,203
182,141,779 shares
|
— | 31 Mar 2026 |
| David C. Novak |
3/4/5
Director
|
0.01%
|
$11,458,778
391,352 shares
|
— | 20 Nov 2025 |
| Jeffrey A. Honickman |
3/4/5
Director
|
0.01%
|
$8,450,889
282,733 shares
|
— | 31 Mar 2026 |
| Jason Armstrong |
3/4/5
CFO
|
0%
|
$4,506,487
98,903 shares
mixed-class rows
|
-$142,617 | 05 Mar 2026 |
| Edward D. Breen |
3/4/5
Director
|
0%
|
$2,554,106
88,962 shares
|
— | 11 May 2026 |
| Asuka Nakahara |
3/4/5
Director
|
0%
|
$1,721,343
57,958 shares
|
-$245,768 | 03 Feb 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: -$2,280,934.
Buys
$0
Insiders: 0
Sells
$2,280,934
Insiders: 3
Net
-$2,280,934
Shares: -70,716
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 0
Shares: 70,716
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 0 | 4,494 | $0 | $142,617 | -$142,617 |
| 3-6 | 0 | 66,222 | $0 | $2,138,317 | -$2,138,317 |
| 6-9 | 0 | 0 | $0 | $0 | $0 |
| 9-12 | 0 | 0 | $0 | $0 | $0 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-20 of 23 reporting-owner rows connected to COMCAST CORP. Open a relationship link for the CIK-to-CIK filing trail.
Rows
23
Largest Forms 3/4/5 holder
Brian L. Roberts
Net 12M change
-$2,280,934
Latest report
19 May 2026
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Brian L. Roberts | Chairman of Board & Co-CEO, Director | $634,676,343 | Mixed | 19 May 2026 | ||
| David N. Watson | CEO - Comcast Cable | $49,748,186 | Mixed | 14 Apr 2022 | ||
| Michael J. Cavanagh | Co-CEO, Director | $32,800,274 | -$1,892,549 | -5.5% | Mixed | 01 Mar 2026 |
| Jeff Shell | CEO - NBCUniversal | $20,821,784 | Mixed | 20 Dec 2022 | ||
| Adam Louis Miller | Chief Administrative Officer | $12,528,568 | Mixed | 01 Mar 2022 | ||
| David C. Novak | Director | $11,458,778 | Mixed | 20 Nov 2025 | ||
| Jeffrey A. Honickman | Director | $8,450,889 | Mixed | 31 Mar 2026 | ||
| Dana Strong | CEO - Sky | $7,365,508 | Mixed | 11 Oct 2022 | ||
| Reid Thomas J. | Chief Legal Officer, Secretary | $7,127,419 | Mixed | 01 Mar 2026 | ||
| Daniel C. Murdock | EVP & Chief Accounting Officer | $4,783,736 | Mixed | 03 Apr 2026 | ||
| Jason Armstrong | Cfo | $4,506,487 | -$142,617 | -3.1% | Mixed | 05 Mar 2026 |
| Gerald L. Hassell | Director | $2,900,269 | Mixed | 31 Mar 2024 | ||
| Jennifer Khoury | Chief Communications Officer | $2,783,568 | Mixed | 17 Mar 2026 | ||
| Edward D. Breen | Director | $2,554,106 | Median | 11 May 2026 | ||
| Asuka Nakahara | Director | $1,721,343 | -$245,768 | -12% | Filing P/S | 03 Feb 2026 |
| Madeline S. Bell | Director | $1,711,493 | Mixed | 20 Jan 2026 | ||
| Kenneth J. Bacon | Director | $1,222,322 | Mixed | 20 Nov 2025 | ||
| Thomas J. Baltimore Jr. | Director | $1,181,267 | Mixed | 31 Mar 2026 | ||
| Maritza Gomez Montiel | Director | $1,067,761 | Mixed | 31 Mar 2024 | ||
| Louise F. Brady | Director | $976,891 | Mixed | 31 Mar 2026 |
Recent insider transactions for COMCAST CORP
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 |
|---|---|---|---|---|---|---|---|---|---|---|
| Brian L. Roberts | CMCSA | Class A Common Stock | Gift | -3.43% | -202,500 | 5,697,826 | 19 May 2026 | Direct | ||
| Edward D. Breen | CMCSA | Class A Common Stock | Gift | 57.4% | 32,440 | 88,962 | 11 May 2026 | Direct | ||
| Daniel C. Murdock | CMCSA | Class A Common Stock | Tax liability | -3.22% | -2,073 | 62,362 | 03 Apr 2026 | Direct | ||
| Daniel C. Murdock | CMCSA | Class A Common Stock | Options Exercise | 8.9% | 5,268 | 64,435 | 03 Apr 2026 | Direct | ||
| Daniel C. Murdock | CMCSA | Restricted Stock Units | Options Exercise | -9.84% | -5,268 | 48,290 | 03 Apr 2026 | Direct | ||
| Gordon Smith | CMCSA | Class A Common Stock | Award | 14.9% | 1,176 | 9,045 | 31 Mar 2026 | Direct | ||
| Jeffrey A. Honickman | CMCSA | Class A Common Stock | Award | 0.58% | 1,524 | 262,583 | 31 Mar 2026 | Direct | ||
| Edward D. Breen | CMCSA | Class A Common Stock | Award | 1.25% | 697 | 56,522 | 31 Mar 2026 | Direct | ||
| Louise F. Brady | CMCSA | Class A Common Stock | Award | 3.73% | 1,176 | 32,683 | 31 Mar 2026 | Direct | ||
| Thomas J. Baltimore Jr. | CMCSA | Class A Common Stock | Award | 3.11% | 1,176 | 39,043 | 31 Mar 2026 | Direct | ||
| Jennifer Khoury | CMCSA | Class A Common Stock | Tax liability | -14.8% | -10,514 | 60,538 | 17 Mar 2026 | Direct | ||
| Jennifer Khoury | CMCSA | Class A Common Stock | Options Exercise | 18.1% | 10,867 | 71,052 | 17 Mar 2026 | Direct | ||
| Jennifer Khoury | CMCSA | Option to Purchase | Options Exercise | -100% | -10,867 | 0 | 17 Mar 2026 | Direct | ||
| Edward D. Breen | CMCSA | Class A Common Stock | Gift | 116.2% | 30,000 | 55,825 | 17 Mar 2026 | Direct | ||
| Jason Armstrong | CMCSA | Class A Common Stock | Tax liability | -41.1% | -69,003 | 98,903 | 05 Mar 2026 | Direct | ||
| Jason Armstrong | CMCSA | Class A Common Stock | Sale | -2.61% | $142,617 | $31.74 | -4,494 | 167,906 | 05 Mar 2026 | Direct |
| Jason Armstrong | CMCSA | Class A Common Stock | Options Exercise | 74.3% | 73,497 | 172,400 | 05 Mar 2026 | Direct | ||
| Jason Armstrong | CMCSA | Option to Purchase | Options Exercise | -100% | -73,497 | 0 | 05 Mar 2026 | Direct | ||
| Brian L. Roberts | CMCSA | Class A Common Stock | Tax liability | -0.77% | -45,578 | 5,893,393 | 01 Mar 2026 | Direct | ||
| Brian L. Roberts | CMCSA | Class A Common Stock | Options Exercise | 0.77% | 45,578 | 5,938,971 | 01 Mar 2026 | Direct | ||
| Brian L. Roberts | CMCSA | Restricted Stock Units | Options Exercise | -10.6% | -45,578 | 382,860 | 01 Mar 2026 | Direct | ||
| Michael J. Cavanagh | CMCSA | Class A Common Stock | Tax liability | -47.5% | -34,980 | 38,633 | 01 Mar 2026 | Direct | ||
| Michael J. Cavanagh | CMCSA | Class A Common Stock | Options Exercise | 90.5% | 34,980 | 73,613 | 01 Mar 2026 | Direct | ||
| Michael J. Cavanagh | CMCSA | Restricted Stock Units | Options Exercise | -10.7% | -34,980 | 291,007 | 01 Mar 2026 | Direct | ||
| Jennifer Khoury | CMCSA | Class A Common Stock | Tax liability | -9.2% | -6,100 | 60,185 | 01 Mar 2026 | Direct | ||
| Jennifer Khoury | CMCSA | Class A Common Stock | Options Exercise | 17.5% | 9,851 | 66,285 | 01 Mar 2026 | Direct | ||
| Jennifer Khoury | CMCSA | Restricted Stock Units | Options Exercise | -78.3% | -9,851 | 2,724 | 01 Mar 2026 | Direct | ||
| Jason Armstrong | CMCSA | Class A Common Stock | Tax liability | -32.6% | -47,847 | 98,903 | 01 Mar 2026 | Direct | ||
| Jason Armstrong | CMCSA | Class A Common Stock | Options Exercise | 239.3% | 103,495 | 146,750 | 01 Mar 2026 | Direct | ||
| Jason Armstrong | CMCSA | Restricted Stock Units | Options Exercise | -100% | -103,495 | 0 | 01 Mar 2026 | Direct | ||
| Daniel C. Murdock | CMCSA | Class A Common Stock | Tax liability | -5.25% | -3,280 | 59,167 | 01 Mar 2026 | Direct | ||
| Daniel C. Murdock | CMCSA | Class A Common Stock | Options Exercise | 27.2% | 13,368 | 62,447 | 01 Mar 2026 | Direct | ||
| Daniel C. Murdock | CMCSA | Restricted Stock Units | Options Exercise | -20% | -13,368 | 53,558 | 01 Mar 2026 | Direct | ||
| Thomas J. Reid | CMCSA | Class A Common Stock | Tax liability | -21.8% | -48,665 | 174,809 | 01 Mar 2026 | Direct | ||
| Thomas J. Reid | CMCSA | Class A Common Stock | Options Exercise | 71.5% | 93,142 | 223,474 | 01 Mar 2026 | Direct | ||
| Thomas J. Reid | CMCSA | Restricted Stock Units | Options Exercise | -100% | -93,142 | 0 | 01 Mar 2026 | Direct | ||
| Jennifer Khoury | CMCSA | Restricted Stock Units | Award | 27,946 | 27,946 | 24 Feb 2026 | Direct | |||
| Thomas J. Reid | CMCSA | Restricted Stock Units | Award | 93,142 | 93,142 | 24 Feb 2026 | Direct | |||
| Jason Armstrong | CMCSA | Restricted Stock Units | Award | 93,142 | 93,142 | 24 Feb 2026 | Direct | |||
| Michael J. Cavanagh | CMCSA | Restricted Stock Units | Award | 325,987 | 325,987 | 24 Feb 2026 | Direct | |||
| Brian L. Roberts | CMCSA | Restricted Stock Units | Award | 428,438 | 428,438 | 24 Feb 2026 | Direct | |||
| Brian L. Roberts | CMCSA | Class A Common Stock | Tax liability | -13.4% | -907,653 | 5,893,393 | 11 Feb 2026 | Direct | ||
| Brian L. Roberts | CMCSA | Class A Common Stock | Options Exercise | 16.9% | 984,320 | 6,801,046 | 11 Feb 2026 | Direct | ||
| Brian L. Roberts | CMCSA | Option to Purchase | Options Exercise | -100% | -984,320 | 0 | 11 Feb 2026 | Direct | ||
| Michael J. Cavanagh | CMCSA | Class A Common Stock | Tax liability | -61.7% | -383,796 | 238,540 | 11 Feb 2026 | By Trust | ||
| Michael J. Cavanagh | CMCSA | Class A Common Stock | Sale | -8.52% | $1,892,549 | $32.66 | -57,947 | 622,336 | 11 Feb 2026 | By Trust |
| Michael J. Cavanagh | CMCSA | Class A Common Stock | Options Exercise | 185.2% | 441,743 | 680,283 | 11 Feb 2026 | By Trust | ||
| Michael J. Cavanagh | CMCSA | Class A Common Stock | Tax liability | -88.4% | -294,495 | 38,633 | 11 Feb 2026 | Direct | ||
| Michael J. Cavanagh | CMCSA | Class A Common Stock | Options Exercise | 762.3% | 294,495 | 333,128 | 11 Feb 2026 | Direct | ||
| Michael J. Cavanagh | CMCSA | Option to Purchase | Options Exercise | -100% | -441,743 | 0 | 11 Feb 2026 | By Trust |
* marks a reported price that did not pass the local price check.