Owens Corning
OC- Exchange
- NYSE
- Industry
- Abrasive, Asbestos & Misc Nonmetallic Mineral Prods
- SEC CIK
- 0001370946
In the last 90 days, Owens Corning insiders filed 0 open-market purchases and 1 sale; 693 institutions reported holding it in 13F filings for Q2 2026, worth $13.1B in total; Harris Associates (Oakmark) is the only superinvestor holding it.
Holders of 5% or more of OC
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Owens Corning, largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| BlackRock, Inc. | 13G/A | 10.00%8.07M shares | +0.40 ppfrom 9.60% | Apr 28, 20253 filings | Jun 4, 2026 | 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
5 Schedule 13D and 13G filings on Owens Corning, newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Jun 4, 202612:12 PM ET | BlackRock, Inc. | 13G/A | 10.00%8.07M shares | +0.40 ppfrom 9.60% | May 31, 2026 | SEC |
| Mar 27, 202611:19 AM ET | Vanguard Group Inc | 13G/A | 0.00%0 shares | −11.47 ppfrom 11.47%Below 5% | Mar 13, 2026 | SEC |
| Jan 21, 202612:30 PM ET | BlackRock, Inc. | 13G/A | 9.60%7.87M shares | −1.20 ppfrom 10.80% | Dec 31, 2025 | SEC |
| Apr 30, 202511:22 AM ET | Vanguard Group Inc | 13G/A | 11.47%9.82M shares | – | Mar 31, 2025 | SEC |
| Apr 28, 20252:02 PM ET | BlackRock, Inc. | 13G/A | 10.80%9.20M shares | – | Mar 31, 2025 | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell Owens Corning shares.
No Form 144 notices for Owens Corning are on file.