Owens Corning Inc
Ownership
Ownership Structure
Who owns Owens Corning Inc (OC)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 99.0% of the shares are freely tradable; institutional investors hold 107.6%.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| BlackRock Inc | 11.15 | 8,814,550 | -4.3 | 06/30/2026 |
| Vanguard Portfolio Management, LLC | 6.92 | 5,468,670 | -0.7 | 06/30/2026 |
| AQR Capital Management LLC | 4.65 | 3,679,060 | +44.8 | 06/30/2026 |
| Vanguard Capital Management, LLC | 4.59 | 3,630,191 | +0.3 | 06/30/2026 |
| State Street Corp | 3.92 | 3,097,509 | +1.1 | 06/30/2026 |
| Dimensional Fund Advisors, Inc. | 3.73 | 2,951,985 | +6.8 | 06/30/2026 |
| First Trust Advisors L.P. | 3.67 | 2,899,702 | +33.1 | 06/30/2026 |
| American Century Companies Inc | 2.85 | 2,255,518 | +10.4 | 06/30/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| iShares Core S&P Mid-Cap ETF | 3.56 | 2,815,743 | +0.0 | 09/30/2026 |
| Vanguard MStar Total Stk Mkt Idx Invest | 3.17 | 2,507,746 | -2.1 | 09/30/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider holdings
| Person | Role | Shares | Value | As of | Type |
|---|---|---|---|---|---|
| Lonergan Edward F | Director | 54,958 | 6,902,692 $ | Aug 7, 2026 | direct |
| Williams John David | Director | 54,752 | 6,876,819 $ | Aug 7, 2026 | direct |
| Fister Todd W | President and COO | 52,138 | 6,548,509 $ | Sep 15, 2026 | direct |
| Nimocks Suzanne P | Director | 36,938 | 4,639,445 $ | Aug 7, 2026 | direct |
| Del Monaco Nicolas | President, Roofing | 26,330 | 3,307,048 $ | Sep 15, 2026 | direct |
| Mendez-Andino Jose | EVP, Chief Innovation Officer | 24,507 | 3,078,137 $ | Aug 6, 2026 | direct |
| Marcon Rachel Barthelemy | President, Doors | 20,591 | 2,586,230 $ | Oct 26, 2026 | direct |
| Collins Jonathan Mark | EVP & Chief Financial Officer | 19,504 | 2,449,702 $ | Aug 10, 2026 | direct |
| Elsner Adrienne | Director | 19,099 | 2,398,856 $ | Aug 7, 2026 | direct |
| Canovas De La Nuez Jose Manuel | President, Insulation | 18,955 | 2,380,748 $ | Aug 10, 2026 | direct |
| Cordeiro Eduardo E | Director | 16,311 | 2,048,615 $ | Aug 7, 2026 | direct |
| Festa Alfred E | Director | 13,296 | 1,669,969 $ | Aug 7, 2026 | direct |
| Martin Paul Edward | Director | 8,338 | 1,047,307 $ | Aug 7, 2026 | direct |
| Collins Michelle T | Director | 2,918 | 366,501 $ | Aug 7, 2026 | direct |
Holdings as of each person's most recent SEC Form 4 filing — excluding options and RSUs, which are not shares yet. Holdings may have changed between two filings.
Insiders
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Oct 26, 2026 | Marcon Rachel Barthelemy | President, Doors | Other | 858 | 114.26 | 98,035 |
| Sep 15, 2026 | Fister Todd W | President and COO | Other | 1,180 | 128.67 | 151,831 |
| Sep 15, 2026 | Del Monaco Nicolas | President, Roofing | Other | 856 | 128.67 | 110,142 |
| Aug 28, 2026 | Marcon Rachel Barthelemy | President, Doors | Sell | 900 | 144.07 | 129,663 |
| Aug 10, 2026 | Marcon Rachel Barthelemy | President, Doors | Other | 6,501 | 153.80 | 999,854 |
| Aug 10, 2026 | Collins Jonathan Mark | EVP & Chief Financial Officer | Other | 19,504 | 153.80 | 2,999,715 |
| Aug 10, 2026 | Del Monaco Nicolas | President, Roofing | Other | 6,501 | 153.80 | 999,854 |
| Aug 10, 2026 | Canovas De La Nuez Jose Manuel | President, Insulation | Other | 3,250 | 153.80 | 499,850 |
| Aug 7, 2026 | Williams John David | Director | Other | 296 | 157.10 | 46,502 |
| Aug 7, 2026 | Martin Paul Edward | Director | Other | 296 | 157.10 | 46,502 |
| Aug 7, 2026 | Cordeiro Eduardo E | Director | Other | 319 | 157.10 | 50,115 |
| Aug 7, 2026 | Nimocks Suzanne P | Director | Other | 321 | 157.10 | 50,429 |
| Aug 7, 2026 | Lonergan Edward F | Director | Other | 581 | 157.10 | 91,275 |
| Aug 7, 2026 | Collins Michelle T | Director | Other | 370 | 157.10 | 58,127 |
| Aug 7, 2026 | Festa Alfred E | Director | Other | 315 | 157.10 | 49,487 |
| Aug 7, 2026 | Elsner Adrienne | Director | Other | 312 | 157.10 | 49,015 |
| Aug 6, 2026 | Williams John David | Director | Other | 284 | 150.60 | 42,770 |
| Aug 6, 2026 | Martin Paul Edward | Director | Other | 42 | 150.60 | 6,325 |
| Aug 6, 2026 | Cordeiro Eduardo E | Director | Other | 67 | 150.60 | 10,090 |
| Aug 6, 2026 | Nimocks Suzanne P | Director | Other | 110 | 150.60 | 16,566 |
| Aug 6, 2026 | Mendez-Andino Jose | EVP, Chief Innovation Officer | Other | 77 | 150.60 | 11,596 |
| Aug 6, 2026 | Lonergan Edward F | Director | Other | 273 | 150.60 | 41,114 |
| Aug 6, 2026 | Festa Alfred E | Director | Other | 68 | 150.60 | 10,241 |
| Aug 6, 2026 | Elsner Adrienne | Director | Other | 98 | 150.60 | 14,759 |
| Jul 28, 2026 | Canovas De La Nuez Jose Manuel | President, Insulation | Other | 1,070 | 143.13 | 153,149 |
Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character. View all insider transactions →
Data as of: November 2, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.