Comscore, Inc.
SCOR- Exchange
- Nasdaq
- Industry
- Services-Business Services, NEC
- SEC CIK
- 0001158172
In the last 90 days, Comscore, Inc. insiders filed 4 open-market purchases and 0 sales; 28 institutions reported holding it in 13F filings for Q2 2026, worth $42.6M in total; no superinvestor holds it.
Holders of 5% or more of SCOR
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Comscore, Inc., largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| Charter Communications, Inc. | 13D/A | 49.99%15.1M shares | +10.49 ppfrom 39.50% | Mar 19, 20215 filings | Aug 21, 2026 | SEC |
| Pine Investor, LLC | 13D/A | 39.90%7.63M shares | +12.70 ppfrom 27.20% | Mar 19, 20217 filings | Dec 31, 2025 | SEC |
| Westerly Capital Management, LLC | 13G/A | 9.40%470.0K shares | – | Mar 20, 20232 filings | Feb 17, 2026 | SEC |
| Irrevocable Larson Family Investment Trust | 13G/A | 5.80%284.1K shares | −0.10 ppfrom 5.90% | May 15, 20248 filings | Jan 28, 2025 | SEC |
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
57 Schedule 13D and 13G filings on Comscore, Inc., newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Feb 2, 20227:11 PM ET | BlackRock Inc. | 13G/AOld format | – | – | – | SEC |
| Mar 19, 2021 | Charter Communications, Inc. | 13DOld format | – | New | – | SEC |
| Mar 19, 2021 | Pine Investor, LLC | 13DOld format | – | New | – | SEC |
| Mar 16, 20214:30 PM ET | Qurate Retail, Inc. | 13DOld format | – | New | – | SEC |
| Feb 12, 2021 | Primecap Management Co | 13G/AOld format | – | – | – | SEC |
| Feb 12, 2021 | Weiss Multi-Strategy Advisers LLC | 13GOld format | – | New | – | SEC |
| Feb 2, 20213:13 PM ET | BlackRock Inc. | 13GOld format | – | New | – | SEC |
Form 144: proposed insider sales
1 notice from officers, directors and other affiliates planning to sell Comscore, Inc. shares, newest first.
| Filed (ET) | Seller | Shares to sell | Market value | Planned sale | Broker | Filing |
|---|---|---|---|---|---|---|
| Mar 13, 20235:15 PM ET | Algranati DavidOfficer | 18.7K | $19.1K | Mar 13, 2023 | Fidelity Brokerage Services LLC | SEC |