Owens Corning Ownership

Who are the major shareholders and have insiders been buying or selling?

Recent Insider Transactions

NYSE:OC Recent Insider Transactions by Companies or Individuals
Date	Value	Name	Entity	Shares	Max Price
28 May 26	SellUS$84,497	Rachel Marcon	Individual	700	US$120.71
08 May 26	SellUS$232,884	Mari Doerfler	Individual	1,926	US$120.92
12 Aug 25	SellUS$65,709	Mari Doerfler	Individual	441	US$149.00

Insider Trading Volume

Insider Buying: OC insiders have only sold shares in the past 3 months.

Ownership Breakdown

What is the ownership structure of OC?
Owner Type	Number of Shares	Ownership Percentage
State or Government	63,219	0.0746%
Individual Insiders	735,660	0.868%
Institutions	83,958,136	99.1%

Dilution of Shares: Shareholders have not been meaningfully diluted in the past year.

Top Shareholders

Top 25 shareholders own 64.99% of the company

Ownership	Name	Shares	Current Value	Change %	Portfolio %
11.4%	BlackRock, Inc.	9,210,602	US$1.1b	-1.53%	0.01%
6.84%	Vanguard Portfolio Management, LLC	5,508,121	US$661.9m	0%	0.03%
4.49%	Vanguard Capital Management, LLC	3,618,028	US$434.7m	0%	0.01%
3.81%	State Street Global Advisors, Inc.	3,064,304	US$368.2m	-0.36%	0.01%
3.43%	Dimensional Fund Advisors LP	2,764,616	US$332.2m	7.31%	0.04%
3.28%	UBS Asset Management AG	2,637,948	US$317.0m	70%	0.02%
3.14%	AQR Capital Management, LLC	2,525,907	US$303.5m	77.7%	0.12%
2.71%	First Trust Advisors LP	2,179,214	US$261.9m	22.7%	0.14%
2.61%	Davis Selected Advisers LP	2,100,935	US$252.4m	2.66%	0.97%
2.54%	American Century Investment Management Inc	2,042,502	US$245.4m	550%	0.08%
2.34%	Geode Capital Management, LLC	1,888,070	US$226.9m	8.74%	0.01%
1.89%	T. Rowe Price Group, Inc.	1,523,829	US$183.1m	-41.3%	0.01%
1.81%	LSV Asset Management	1,459,821	US$175.4m	-0.26%	0.3%
1.59%	Arrowstreet Capital, Limited Partnership	1,278,118	US$153.6m	-2.66%	0.07%
1.45%	Allspring Global Investments, LLC	1,170,179	US$140.6m	722%	0.19%
1.44%	JP Morgan Asset Management	1,158,021	US$139.1m	18.1%	0.01%
1.4%	Nordea Investment Management, AB	1,126,860	US$135.4m	228%	0.07%
1.33%	Norges Bank Investment Management	1,070,035	US$128.6m	0%	0.01%
1.24%	Millennium Management LLC	1,000,255	US$120.2m	45.2%	0.07%
1.21%	Two Sigma Investments, LP	972,510	US$116.9m	13.9%	0.09%
1.17%	Tontine Management, LLC	940,522	US$113.0m	2%	1.09%
1.14%	Harris Associates L.P.	915,393	US$110.0m	226%	0.12%
0.94%	Deutsche Asset & Wealth Management	757,350	US$91.0m	4.52%	0.02%
0.89%	Northern Trust Global Investments	718,359	US$86.3m	1.32%	0.01%
0.87%	Charles Schwab Investment Management, Inc.	700,527	US$84.2m	5.34%	0.01%

Company Analysis and Financial Data Status

Data	Last Updated (UTC time)
Company Analysis	2026/06/04 23:15
End of Day Share Price	2026/06/04 00:00
Earnings	2026/03/31
Annual Earnings	2025/12/31

Data Sources

The data used in our company analysis is from S&P Global Market Intelligence LLC. The following data is used in our analysis model to generate this report. Data is normalised which can introduce a delay from the source being available.

Package	Data	Timeframe	Example US Source ^*
Company Financials	10 years	Income statement Cash flow statement Balance sheet	SEC Form 10-K SEC Form 10-Q
Analyst Consensus Estimates	+3 years	Forecast financials Analyst price targets	Analyst Research Reports Blue Matrix
Market Prices	30 years	Stock prices Dividends, Splits and Actions	ICE Market Data SEC Form S-1
Ownership	10 years	Top shareholders Insider trading	SEC Form 4 SEC Form 13D
Management	10 years	Leadership team Board of directors	SEC Form 10-K SEC Form DEF 14A
Key Developments	10 years	Company announcements	SEC Form 8-K

^* Example for US securities, for non-US equivalent regulatory forms and sources are used.

Unless specified all financial data is based on a yearly period but updated quarterly. This is known as Trailing Twelve Month (TTM) or Last Twelve Month (LTM) Data. Learn more.

Analysis Model and Snowflake

Details of the analysis model used to generate this report is available on our Github page, we also have guides on how to use our reports and tutorials on Youtube.

Learn about the world class team who designed and built the Simply Wall St analysis model.

Industry and Sector Metrics

Our industry and section metrics are calculated every 6 hours by Simply Wall St, details of our process are available on Github.

Analyst Sources

Owens Corning is covered by 32 analysts. 16 of those analysts submitted the estimates of revenue or earnings used as inputs to our report. Analysts submissions are updated throughout the day.

Analyst	Institution
John Eade	Argus Research Company
Stephen Kim	Barclays
Matthew Bouley	Barclays