Comparable stake leader
BlackRock, Inc.
SEC ownership of Owens Corning
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001370946.
Disclosed value leader
BlackRock, Inc.
Comparable rows
50/50
Latest evidence
10 Aug 2026
- Public ticker
- OC on NYSE
- Parsed ownership sources
-
13F, 13D/G, and 3/4/5
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
- Largest SEC-reported holder
-
BlackRock, Inc.
Ranking: Comparable ownership first, then disclosed value
- Comparable ownership rows
-
50 of 50
Meaning: Rows with safely comparable ownership %
- Latest 13D/G holder
-
BlackRock, Inc.
Source: Latest parsed Schedule 13D/G stake
- Latest parsed ownership date
-
10 Aug 2026
Freshness: Most recent filing date in this holder set
- Issuer CIK
- 0001370946
- Issuer location
- Toledo, OH
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 Owens Corning (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
BlackRock, Inc.
Disclosed value leader
BlackRock, Inc.
Comparable rows
50/50
Latest evidence
10 Aug 2026
13F
13D/G
3/4/5
Lead comparable stake: 10%
13D/G row: BlackRock, Inc.
Showing 1-8 of 50 holder rows.
Quick read
BlackRock, Inc. leads the comparable SEC ownership view at 10%.
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 BlackRock, Inc.'s linked filing trail.
Comparable ownership
Top 5
BlackRock, Inc.
10%
VANGUARD PORTFOLIO MANAGEMENT LLC
6.9%
VANGUARD CAPITAL MANAGEMENT LLC
5.3%
Brian Chambers
0.49%
Edward F. Lonergan
0.07%
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 |
|---|---|---|---|---|---|
| BlackRock, Inc. |
13F
13D/G
Company
|
10%
from 13D/G
|
$1,401,160,809
8,814,550 shares
|
— | 30 Jun 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC |
13F
13D/G
Company · Vanguard Portfolio Management
|
6.9%
from 13D/G
|
$869,299,783
5,468,670 shares
|
— | 30 Jun 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC |
13F
13D/G
Company · Vanguard Capital Management
|
5.3%
from 13D/G
|
$577,055,161
3,630,191 shares
|
— | 30 Jun 2026 |
| Brian Chambers |
3/4/5
Chair, President and CEO, Director
|
0.49%
|
$48,840,908
395,537 shares
|
— | 25 Feb 2026 |
| Edward F. Lonergan |
3/4/5
Director
|
0.07%
|
$8,736,082
54,958 shares
|
— | 06 Aug 2026 |
| John David Williams |
3/4/5
Director
|
0.07%
|
$8,703,336
54,752 shares
|
— | 06 Aug 2026 |
| Todd W. Fister |
3/4/5
EVP, CFO and COO
|
0.07%
|
$5,746,353
53,099 shares
|
— | 01 May 2026 |
| Suzanne P. Nimocks |
3/4/5
Director
|
0.05%
|
$5,871,705
36,938 shares
|
— | 06 Aug 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: -$317,381.
Buys
$0
Insiders: 0
Sells
$317,381
Insiders: 2
Net
-$317,381
Shares: -2,626
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 0
Shares: 2,626
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 0 | 700 | $0 | $84,497 | -$84,497 |
| 3-6 | 0 | 1,926 | $0 | $232,884 | -$232,884 |
| 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 27 reporting-owner rows connected to Owens Corning. Open a relationship link for the CIK-to-CIK filing trail.
Rows
27
Largest Forms 3/4/5 holder
Brian Chambers
Net 12M change
-$317,381
Latest report
10 Aug 2026
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Brian Chambers | Chair, President and CEO, Director | $48,840,908 | Mixed | 25 Feb 2026 | ||
| Marcio A. Sandri | President, Composites | $21,663,513 | Mixed | 05 Feb 2025 | ||
| W. Howard Morris | Director | $12,692,174 | Mixed | 10 Apr 2025 | ||
| Edward F. Lonergan | Director | $8,736,082 | Median | 06 Aug 2026 | ||
| John David Williams | Director | $8,703,336 | Median | 06 Aug 2026 | ||
| Ball Christopher O | President, Doors | $7,917,638 | Mixed | 26 Feb 2025 | ||
| Smith Daniel T. | EVP and Chief Growth Officer | $7,063,808 | Mixed | 04 Aug 2023 | ||
| Kenneth Scott Parks | EVP & Chief Financial Officer | $6,546,982 | Mixed | 02 Feb 2023 | ||
| Suzanne P. Nimocks | Director | $5,871,705 | Median | 06 Aug 2026 | ||
| Todd W. Fister | EVP, CFO and COO | $5,746,353 | Mixed | 01 May 2026 | ||
| Gunner Smith | President, Roofing | $4,895,333 | Mixed | 21 Feb 2025 | ||
| Gina A. Beredo | Evp, Cao & Gc | $4,488,621 | Mixed | 25 Feb 2026 | ||
| Nicolas del Monaco | President, Roofing | $4,321,486 | Median | 10 Aug 2026 | ||
| Jose Mendez-Andino | EVP, Chief Innovation Officer | $3,895,706 | Median | 06 Aug 2026 | ||
| Rachel Barthelemy Marcon | President, Doors | $3,552,597 | -$84,497 | -2.3% | Median | 10 Aug 2026 |
| Paula Russell | EVP, Chief HR Officer | $3,494,911 | Mixed | 10 Apr 2025 | ||
| Jonathan Mark Collins | EVP & Chief Financial Officer | $3,100,355 | Median | 10 Aug 2026 | ||
| Adrienne Elsner | Director | $3,036,004 | Median | 06 Aug 2026 | ||
| Jose Manuel Canovas de la Nuez | President, Insulation | $3,013,086 | Median | 10 Aug 2026 | ||
| Maryann T. Mannen | Director | $2,966,316 | Mixed | 09 Apr 2026 |
Recent insider transactions for Owens Corning
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 |
|---|---|---|---|---|---|---|---|---|---|---|
| Rachel Barthelemy Marcon | OC | $.01 Par Value Common | Award | 41% | 6,501 | 22,349 | 10 Aug 2026 | Direct | ||
| Jonathan Mark Collins | OC | $.01 Par Value Common | Award | 19,504 | 19,504 | 10 Aug 2026 | Direct | |||
| Nicolas del Monaco | OC | $.01 Par Value Common | Award | 31.4% | 6,501 | 27,186 | 10 Aug 2026 | Direct | ||
| Jose Manuel Canovas de la Nuez | OC | $.01 Par Value Common | Award | 20.7% | 3,250 | 18,955 | 10 Aug 2026 | Direct | ||
| John David Williams | OC | $.01 Par Value Common | Award | 0.54% | 296 | 54,752 | 07 Aug 2026 | Direct | ||
| Paul Edward Martin | OC | $.01 Par Value Common | Award | 3.68% | 296 | 8,338 | 07 Aug 2026 | Direct | ||
| Suzanne P. Nimocks | OC | $.01 Par Value Common | Award | 0.88% | 321 | 36,938 | 07 Aug 2026 | Direct | ||
| Edward F. Lonergan | OC | $.01 Par Value Common | Award | 1.07% | 581 | 54,958 | 07 Aug 2026 | Direct | ||
| Collins Michelle T. | OC | $.01 Par Value Common | Award | 14.5% | 370 | 2,918 | 07 Aug 2026 | Direct | ||
| Adrienne Elsner | OC | $.01 Par Value Common | Award | 1.66% | 312 | 19,099 | 07 Aug 2026 | Direct | ||
| Alfred E. Festa | OC | $.01 Par Value Common | Award | 2.43% | 315 | 13,296 | 07 Aug 2026 | Direct | ||
| Eduardo E. Cordeiro | OC | $.01 Par Value Common | Award | 1.99% | 319 | 16,311 | 07 Aug 2026 | Direct | ||
| John David Williams | OC | $.01 Par Value Common | Award | 0.52% | 284 | 54,456 | 06 Aug 2026 | Direct | ||
| Paul Edward Martin | OC | $.01 Par Value Common | Award | 0.52% | 41.97 | 8,042 | 06 Aug 2026 | Direct | ||
| Suzanne P. Nimocks | OC | $.01 Par Value Common | Award | 0.3% | 110 | 36,617 | 06 Aug 2026 | Direct | ||
| Jose Mendez-Andino | OC | $.01 Par Value Common | Award | 0.32% | 77.24 | 24,507 | 06 Aug 2026 | Direct | ||
| Edward F. Lonergan | OC | $.01 Par Value Common | Award | 0.51% | 273 | 54,377 | 06 Aug 2026 | Direct | ||
| Adrienne Elsner | OC | $.01 Par Value Common | Award | 0.52% | 98.04 | 18,787 | 06 Aug 2026 | Direct | ||
| Alfred E. Festa | OC | $.01 Par Value Common | Award | 0.52% | 67.74 | 12,981 | 06 Aug 2026 | Direct | ||
| Eduardo E. Cordeiro | OC | $.01 Par Value Common | Award | 0.42% | 67.1 | 15,992 | 06 Aug 2026 | Direct | ||
| Jose Manuel Canovas de la Nuez | OC | $.01 Par Value Common | Tax liability | -6.38% | -1,070 | 15,705 | 28 Jul 2026 | Direct | ||
| Rachel Barthelemy Marcon | OC | $.01 Par Value Common | Sale | -4.23% | $84,497 | $120.71 | -700 | 15,848 | 28 May 2026 | Direct |
| Alfred E. Festa | OC | $.01 Par Value Common | Award | 3.25% | 407 | 12,913 | 08 May 2026 | Direct | ||
| Paul Edward Martin | OC | $.01 Par Value Common | Award | 5.01% | 382 | 8,000 | 08 May 2026 | Direct | ||
| Suzanne P. Nimocks | OC | $.01 Par Value Common | Award | 1.15% | 414 | 36,507 | 08 May 2026 | Direct | ||
| Edward F. Lonergan | OC | $.01 Par Value Common | Award | 1.41% | 750 | 54,103 | 08 May 2026 | Direct | ||
| Mari Doerfler | OC | $.01 Par Value Common | Sale | -38.4% | $232,884 | $120.92 | -1,926 | 3,093 | 08 May 2026 | Direct |
| Collins Michelle T. | OC | $.01 Par Value Common | Award | 23.1% | 478 | 2,548 | 08 May 2026 | Direct | ||
| Adrienne Elsner | OC | $.01 Par Value Common | Award | 2.09% | 382 | 18,689 | 08 May 2026 | Direct | ||
| John David Williams | OC | $.01 Par Value Common | Award | 0.71% | 382 | 54,172 | 08 May 2026 | Direct | ||
| Eduardo E. Cordeiro | OC | $.01 Par Value Common | Award | 2.62% | 407 | 15,925 | 08 May 2026 | Direct | ||
| Todd W. Fister | OC | $.01 Par Value Common | Award | 18.1% | 8,147 | 53,099 | 01 May 2026 | Direct | ||
| Eduardo E. Cordeiro | OC | $.01 Par Value Common | Award | 0.55% | 84.53 | 15,518 | 09 Apr 2026 | Direct | ||
| Adrienne Elsner | OC | $.01 Par Value Common | Award | 0.69% | 125 | 18,307 | 09 Apr 2026 | Direct | ||
| Suzanne P. Nimocks | OC | $.01 Par Value Common | Award | 0.39% | 140 | 36,093 | 09 Apr 2026 | Direct | ||
| Mannen Maryann T. | OC | $.01 Par Value Common | Award | 0.6% | 163 | 27,410 | 09 Apr 2026 | Direct | ||
| Edward F. Lonergan | OC | $.01 Par Value Common | Award | 0.66% | 351 | 53,353 | 09 Apr 2026 | Direct | ||
| John David Williams | OC | $.01 Par Value Common | Award | 0.69% | 367 | 53,790 | 09 Apr 2026 | Direct | ||
| Alfred E. Festa | OC | $.01 Par Value Common | Award | 0.69% | 85.36 | 12,506 | 09 Apr 2026 | Direct | ||
| Paul Edward Martin | OC | $.01 Par Value Common | Award | 0.69% | 52 | 7,618 | 09 Apr 2026 | Direct | ||
| Jose Mendez-Andino | OC | $.01 Par Value Common | Award | 0.41% | 101 | 24,430 | 09 Apr 2026 | Direct | ||
| Mari Doerfler | OC | $.01 Par Value Common | Tax liability | -18.9% | -1,167 | 5,019 | 06 Apr 2026 | Direct | ||
| Alfred E. Festa | OC | $.01 Par Value Common | Award | 3.38% | 406 | 12,421 | 27 Feb 2026 | Direct | ||
| John David Williams | OC | $.01 Par Value Common | Award | 0.72% | 381 | 53,422 | 27 Feb 2026 | Direct | ||
| Adrienne Elsner | OC | $.01 Par Value Common | Award | 2.14% | 381 | 18,182 | 27 Feb 2026 | Direct | ||
| Edward F. Lonergan | OC | $.01 Par Value Common | Award | 1.43% | 748 | 53,003 | 27 Feb 2026 | Direct | ||
| Paul Edward Martin | OC | $.01 Par Value Common | Award | 5.3% | 381 | 7,566 | 27 Feb 2026 | Direct | ||
| Collins Michelle T. | OC | $.01 Par Value Common | Award | 29.9% | 476 | 2,070 | 27 Feb 2026 | Direct | ||
| Eduardo E. Cordeiro | OC | $.01 Par Value Common | Award | 2.7% | 406 | 15,433 | 27 Feb 2026 | Direct | ||
| Mannen Maryann T. | OC | $.01 Par Value Common | Award | 1.54% | 412 | 27,247 | 27 Feb 2026 | Direct |
* marks a reported price that did not pass the local price check.