Comparable stake leader
CHARTER COMMUNICATIONS, INC. /MO/
SEC ownership of COMSCORE, INC.
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001158172.
Disclosed value leader
CHARTER COMMUNICATIONS, INC. /MO/
Comparable rows
37/50
Latest evidence
28 Aug 2026
- Public ticker
- SCOR on Nasdaq
- Parsed ownership sources
-
3/4/5, 13D/G, and 13F
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
- Largest SEC-reported holder
-
CHARTER COMMUNICATIONS, INC. /MO/
Ranking: Comparable ownership first, then disclosed value
- Comparable ownership rows
-
37 of 50
Meaning: Rows with safely comparable ownership %
- Latest 13D/G holder
-
CHARTER COMMUNICATIONS, INC. /MO/
Source: Latest parsed Schedule 13D/G stake
- Latest parsed ownership date
-
28 Aug 2026
Freshness: Most recent filing date in this holder set
- Issuer CIK
- 0001158172
- Issuer location
- Reston, VA
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 COMSCORE, 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
CHARTER COMMUNICATIONS, I...
Disclosed value leader
CHARTER COMMUNICATIONS, I...
Comparable rows
37/50
Latest evidence
28 Aug 2026
3/4/5
13D/G
13F
Lead comparable stake: 50%
13 rows are not safely comparable across share classes.
13D/G row: CHARTER COMMUNICATIONS, INC. /MO/
Showing 1-8 of 50 holder rows.
Quick read
CHARTER COMMUNICATIONS, INC. /MO/ leads the comparable SEC ownership view at 50%.
37 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 CHARTER COMMUNICATIONS, INC. /MO/'s linked filing trail.
Comparable ownership
Top 5
CHARTER COMMUNICATIONS, INC. /MO/
50%
Pine Investor, LLC
40%
WESTERLY CAPITAL MANAGEMENT, LLC
9.4%
Irrevocable Larson Family Investm...
5.8%
WPP plc
3.8%
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 |
|---|---|---|---|---|---|
| CHARTER COMMUNICATIONS, INC. /MO/ |
3/4/5
13D/G
10%+ Owner · Charter Communications, Inc.
|
50%
from 13D/G
|
$151,020,399
18,402,325 shares
mixed-class rows
|
— | 19 Aug 2026 |
| Pine Investor, LLC |
13D/G
3/4/5
Director, 10%+ Owner
|
40%
|
$52,410,907
7,628,953 shares
|
+$39,834,829 | 29 Dec 2025 |
| WESTERLY CAPITAL MANAGEMENT, LLC |
13F
13D/G
Company
|
9.4%
from 13D/G
|
$9,674,892
1,310,961 shares
|
— | 30 Jun 2026 |
| Irrevocable Larson Family Investment Trust |
13D/G
|
5.8%
|
$1,952,083
284,146 shares
|
-$41,220 | 23 Jan 2025 |
| WPP plc |
13D/G
CAVENDISH SQUARE HOLDING B.V.
|
3.8%
|
—
565,968 shares
|
$0 | 29 Dec 2025 |
| Mount Logan Capital Inc. |
13D/G
|
1.7%
|
$1,722,096
250,669 shares
|
-$1,029,002 | 31 Dec 2025 |
| Itzhak Fisher |
3/4/5
Director
|
0.32%
|
$470,631
47,590 shares
mixed-class rows
|
— | 29 Dec 2025 |
| Martin E. Patterson |
3/4/5
Director
|
0.26%
|
$409,433
38,682 shares
mixed-class rows
|
— | 29 Dec 2025 |
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 buying over the last 12 months. Net value: +$124,974.
Buys
$246,830
Insiders: 3
Sells
$121,856
Insiders: 1
Net
+$124,974
Shares: +29,157
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 47,000
Shares: 17,843
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 47,000 | 0 | $246,830 | $0 | +$246,830 |
| 3-6 | 0 | 0 | $0 | $0 | $0 |
| 6-9 | 0 | 0 | $0 | $0 | $0 |
| 9-12 | 0 | 17,843 | $0 | $121,856 | -$121,856 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-20 of 33 reporting-owner rows connected to COMSCORE, INC.. Open a relationship link for the CIK-to-CIK filing trail.
Rows
33
Largest Forms 3/4/5 holder
CHARTER COMMUNICATIONS, INC. /MO/
Net 12M change
+$124,974
Latest report
28 Aug 2026
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| CHARTER COMMUNICATIONS, INC. /MO/ | 10%+ Owner | $151,020,399 | Mixed | 19 Aug 2026 | ||
| Cerberus Capital Management, L.P. | Director, 10%+ Owner | $102,644,070 | Mixed | 01 Jul 2026 | ||
| Liberty Broadband Corp | Director, 10%+ Owner | $78,862,903 | Mixed | 19 Aug 2026 | ||
| CCH II LLC | 10%+ Owner | $71,870,120 | Mixed | 19 Aug 2026 | ||
| SPECTRUM MANAGEMENT HOLDING COMPANY, LLC | 10%+ Owner | $71,870,120 | Mixed | 19 Aug 2026 | ||
| Charter Communications Holding Company, LLC | 10%+ Owner | $71,870,120 | Mixed | 19 Aug 2026 | ||
| CHARTER COMMUNICATIONS HOLDINGS LLC | 10%+ Owner | $71,870,120 | Mixed | 19 Aug 2026 | ||
| Pine Investor, LLC | Director, 10%+ Owner | $23,720,503 | Mixed | 01 Jul 2026 | ||
| William Paul Livek | Director | $1,281,071 | -$17,256 | -1.3% | Mixed | 28 Aug 2026 |
| Matthew F. McLaughlin | Chief Executive Officer, Director | $1,015,475 | +$105,200 | +12% | Mixed | 26 Aug 2026 |
| Brent D. Rosenthal | Director | $734,522 | Mixed | 12 Jun 2024 | ||
| Itzhak Fisher | Director | $470,631 | Mixed | 29 Dec 2025 | ||
| Kathleen Love | Director | $444,524 | Mixed | 01 Jul 2024 | ||
| Brian J. Wendling | Director | $438,686 | Mixed | 01 Jul 2026 | ||
| 180 DEGREE CAPITAL CORP. /NY/ | Other* | $411,477 | Filing P/S | 03 Apr 2024 | ||
| Martin E. Patterson | Director | $409,433 | Mixed | 29 Dec 2025 | ||
| Nana Banerjee | Director | $388,424 | Mixed | 29 Dec 2025 | ||
| Leslie Gillin | Director | $372,829 | Mixed | 29 Dec 2025 | ||
| Irwin Gotlieb | Director | $319,881 | Mixed | 15 Jun 2022 | ||
| David Algranati | Chief Innovation Officer | $215,500 | Mixed | 10 Mar 2024 |
Recent insider transactions for COMSCORE, 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| William Paul Livek | SCOR | Common Stock | Purchase | 10.1% | $104,600 | $5.23 | 20,000 | 217,473 | 28 Aug 2026 | Direct |
| Matthew F. McLaughlin | SCOR | Common Stock | Purchase | 13.7% | $105,200 | $5.26 | 20,000 | 165,739 | 26 Aug 2026 | Direct |
| David Kline | SCOR | Common Stock | Purchase | $37,030 | $5.29 | 7,000 | 7,000 | 20 Aug 2026 | Direct | |
| Smriti Sharma | SCOR | Stock Option (right to buy) | Award | 60,000 | 60,000 | 20 Aug 2026 | Direct | |||
| Smriti Sharma | SCOR | Restricted Stock Units | Award | 60,000 | 60,000 | 20 Aug 2026 | Direct | |||
| Mary Margaret Curry | SCOR | Stock Option (right to buy) | Award | 60,000 | 60,000 | 20 Aug 2026 | Direct | |||
| Mary Margaret Curry | SCOR | Restricted Stock Units | Award | 60,000 | 60,000 | 20 Aug 2026 | Direct | |||
| Liberty Broadband Corp | SCOR | Common Stock | Other | -100% | -3,286,825 | 0 | 19 Aug 2026 | Direct | ||
| Liberty Broadband Corp | SCOR | Series C Convertible Preferred Stock | Other | 4,223,621 | 0 | 19 Aug 2026 | Direct | |||
| Charter Communications, Inc. /Mo/ | SCOR | Common Stock | Other | 99.8% | 3,286,825 | 6,582,008 | 19 Aug 2026 | See Footnote | ||
| Charter Communications, Inc. /Mo/ | SCOR | Common Stock | Other | 99.8% | 3,286,825 | 6,582,008 | 19 Aug 2026 | See Footnote | ||
| Charter Communications, Inc. /Mo/ | SCOR | Common Stock | Other | 99.8% | 3,286,825 | 6,582,008 | 19 Aug 2026 | See Footnote | ||
| Charter Communications, Inc. /Mo/ | SCOR | Common Stock | Other | 99.8% | 3,286,825 | 6,582,008 | 19 Aug 2026 | See Footnote | ||
| Charter Communications, Inc. /Mo/ | SCOR | Common Stock | Other | 99.8% | 3,286,825 | 6,582,008 | 19 Aug 2026 | See Footnote | ||
| Charter Communications, Inc. /Mo/ | SCOR | Series C Convertible Preferred Stock | Other | 100% | 4,223,621 | 8,447,242 | 19 Aug 2026 | See Footnote | ||
| Charter Communications, Inc. /Mo/ | SCOR | Series C Convertible Preferred Stock | Other | 100% | 4,223,621 | 8,447,242 | 19 Aug 2026 | See Footnote | ||
| Charter Communications, Inc. /Mo/ | SCOR | Series C Convertible Preferred Stock | Other | 100% | 4,223,621 | 8,447,242 | 19 Aug 2026 | See Footnote | ||
| Charter Communications, Inc. /Mo/ | SCOR | Series C Convertible Preferred Stock | Other | 100% | 4,223,621 | 8,447,242 | 19 Aug 2026 | See Footnote | ||
| Charter Communications, Inc. /Mo/ | SCOR | Series C Convertible Preferred Stock | Other | 100% | 4,223,621 | 8,447,242 | 19 Aug 2026 | See Footnote | ||
| Cerberus Capital Management, L.P. | SCOR | Common Stock | Award | 0.48% | 16,461 | 3,417,940 | 01 Jul 2026 | See Footnote | ||
| Cerberus Capital Management, L.P. | SCOR | Common Stock | Award | 0.48% | 16,461 | 3,417,940 | 01 Jul 2026 | See Footnote | ||
| Charter Communications, Inc. /Mo/ | SCOR | Restricted Stock Units | Award | 16,461 | 16,461 | 01 Jul 2026 | See Footnote | |||
| Charter Communications, Inc. /Mo/ | SCOR | Restricted Stock Units | Award | 16,461 | 16,461 | 01 Jul 2026 | See Footnote | |||
| Charter Communications, Inc. /Mo/ | SCOR | Restricted Stock Units | Award | 16,461 | 16,461 | 01 Jul 2026 | See Footnote | |||
| Charter Communications, Inc. /Mo/ | SCOR | Restricted Stock Units | Award | 16,461 | 16,461 | 01 Jul 2026 | See Footnote | |||
| Charter Communications, Inc. /Mo/ | SCOR | Restricted Stock Units | Award | 16,461 | 16,461 | 01 Jul 2026 | See Footnote | |||
| Stuart Brian Frankel | SCOR | Restricted Stock Units | Award | 17,294 | 17,294 | 01 Jul 2026 | Direct | |||
| Brian J. Wendling | SCOR | Restricted Stock Units | Award | 16,461 | 16,461 | 01 Jul 2026 | Direct | |||
| David Kline | SCOR | Restricted Stock Units | Award | 16,461 | 16,461 | 01 Jul 2026 | Direct | |||
| William Paul Livek | SCOR | Restricted Stock Units | Award | 16,461 | 16,461 | 01 Jul 2026 | Direct | |||
| Matthew F. McLaughlin | SCOR | Restricted Stock Units | Award | 703,030 | 400,000 | 16 Jun 2026 | Direct | |||
| Matthew F. McLaughlin | SCOR | Common Stock | Options Exercise | 7.37% | 10,000 | 145,739 | 16 Jun 2026 | Direct | ||
| Matthew F. McLaughlin | SCOR | Restricted Stock Units | Options Exercise | -100% | -10,000 | 0 | 16 Jun 2026 | Direct | ||
| Brian J. Wendling | SCOR | Common Stock | Options Exercise | 30.8% | 10,000 | 42,507 | 16 Jun 2026 | Direct | ||
| Brian J. Wendling | SCOR | Restricted Stock Units | Options Exercise | -100% | -10,000 | 0 | 16 Jun 2026 | Direct | ||
| William Paul Livek | SCOR | Common Stock | Options Exercise | 5.33% | 10,000 | 197,473 | 16 Jun 2026 | Direct | ||
| William Paul Livek | SCOR | Restricted Stock Units | Options Exercise | -100% | -10,000 | 0 | 16 Jun 2026 | Direct | ||
| Charter Communications, Inc. /Mo/ | SCOR | Common Stock | Options Exercise | 0.6% | 20,000 | 3,356,614 | 16 Jun 2026 | Direct | ||
| Charter Communications, Inc. /Mo/ | SCOR | Common Stock | Options Exercise | 0.6% | 20,000 | 3,356,614 | 16 Jun 2026 | Direct | ||
| Charter Communications, Inc. /Mo/ | SCOR | Common Stock | Options Exercise | 0.6% | 20,000 | 3,356,614 | 16 Jun 2026 | Direct | ||
| Charter Communications, Inc. /Mo/ | SCOR | Common Stock | Options Exercise | 0.6% | 20,000 | 3,356,614 | 16 Jun 2026 | Direct | ||
| Charter Communications, Inc. /Mo/ | SCOR | Common Stock | Options Exercise | 0.6% | 20,000 | 3,356,614 | 16 Jun 2026 | Direct | ||
| Charter Communications, Inc. /Mo/ | SCOR | Restricted Stock Units | Options Exercise | -100% | -20,000 | 0 | 16 Jun 2026 | See Footnote | ||
| Charter Communications, Inc. /Mo/ | SCOR | Restricted Stock Units | Options Exercise | -100% | -20,000 | 0 | 16 Jun 2026 | See Footnote | ||
| Charter Communications, Inc. /Mo/ | SCOR | Restricted Stock Units | Options Exercise | -100% | -20,000 | 0 | 16 Jun 2026 | See Footnote | ||
| Charter Communications, Inc. /Mo/ | SCOR | Restricted Stock Units | Options Exercise | -100% | -20,000 | 0 | 16 Jun 2026 | See Footnote | ||
| Charter Communications, Inc. /Mo/ | SCOR | Restricted Stock Units | Options Exercise | -100% | -20,000 | 0 | 16 Jun 2026 | See Footnote | ||
| Matthew F. McLaughlin | SCOR | Stock Option (right to buy) | Award | 449,727 | 449,727 | 12 Jun 2026 | Direct | |||
| Stephen Bagdasarian | SCOR | Common Stock | Tax liability | -8.5% | -726 | 7,814 | 06 Jun 2026 | Direct | ||
| Stephen Bagdasarian | SCOR | Common Stock | Options Exercise | 40.8% | 2,475 | 8,540 | 06 Jun 2026 | Direct |
* marks a reported price that did not pass the local price check.