Company: OC
Filing Date: 2025-04-03
Form Type: POSASR
Source: 0001370946-25-000135
Chunk: 0

Company: Owens Corning
Filing Date: 2025-04-03
Form: POSASR
Chunk 0
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<div align='center'>As filed with the Securities and Exchange Commission on April 3, 2025</div>

#### Registration No. 333-275165

### UNITED STATES

### SECURITIES AND EXCHANGE COMMISSION

#### Washington, D.C. 20549

#### POST-EFFECTIVE AMENDMENT NO. 1
<div align='center'>TO</div>

#### FORM S-3 REGISTRATION STATEMENT

#### UNDER

#### THE SECURITIES ACT OF 1933

### OWENS CORNING
<div align='center'>(Exact name of registrant as specified in its charter)</div>

#### Delaware
<div align='center'>(State or other jurisdiction of incorporation or organization)</div>

#### 43-2109021
<div align='center'>(I.R.S. Employer Identification Number)</div>

#### One Owens Corning Parkway

#### Toledo, Ohio 43659
<div align='center'>(419) 248-8000

(Address, including zip code, and telephone number, including area code, of registrant’s principal executive offices)</div>

#### Gina A. Beredo
<div align='center'>Executive Vice President, General Counsel and Chief Administrative Officer</div>

#### Owens Corning

#### One Owens Corning Parkway

#### Toledo, Ohio 43659
<div align='center'>(419) 248-8000

(Name, address, including zip code, and telephone number, including area code, of agent for service)</div>

<div align='center'>Copies to:</div>

#### Michael J. Solecki

#### Jones Day

#### 901 Lakeside Avenue

#### Cleveland, Ohio 44114

#### Telephone: (216) 586-3939
Approximate date of commencement of proposed sale to the public: Not applicable.

If the only securities being registered on this Form are being offered pursuant to dividend or interest reinvestment plans, please check the following box. ☐

If any of the securities being registered on this Form are to be offered on a delayed or continuous basis pursuant to Rule 415 under the Securities Act of 1933, other than securities offered only in connection with dividend or interest reinvestment plans, check the following box. ☐

If this Form is filed to register additional securities for an offering pursuant to Rule 462(b) under the Securities Act, please check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering. ☐

If this