Mari Doerfler

CIK: 0001957375

Transaction Breakdown

Open Market Buys (P)0 (0.0%)

High conviction signal

Open Market Sales (S)2 (25.0%)

Position reduction

Option Exercises (M)0 (0.0%)

Derivative conversions

Awards (A)2 (25.0%)

Compensation grants

Other (G, F, J, C, D, …)4 (50.0%)

Gifts, tax withholding, conversions, dispositions to the issuer and other codes

Companies & Roles (1)

Owens Corning

Officer

Discretionary Trading P&L

Holdings

Transaction History (8 total)

OC
Owens Corning
May 8, 2026
Sale(S)
Direct
1.9K shares at avg. $120.92$233K
OC
Owens Corning
Apr 6, 2026
Tax Payment(F)
Direct
1.2K shares at avg. $106.28$124K
OC
Owens Corning
Feb 5, 2026
Tax Payment(F)
Direct
147 shares at avg. $132.23$19K
OC
Owens Corning
Feb 4, 2026
Award(A)
Direct
1.5K shares at avg. $132.83$196K
OC
Owens Corning
Feb 2, 2026
Tax Payment(F)
Direct
379 shares at avg. $122.17$46K
OC
Owens Corning
Aug 12, 2025
Sale(S)
Direct
441 shares at avg. $149.00$66K
OC
Owens Corning
Feb 5, 2025
Award(A)
Direct
892 shares at avg. $182.15$162K
OC
Owens Corning
Feb 3, 2025
Tax Payment(F)
Direct
458 shares at avg. $180.10$82K

		Type	Shares	Price		Ownership
May 8, 2026	OC Owens Corning	Sale(S)	1,926	$120.92	$232,884	Direct
Apr 6, 2026	OC Owens Corning	Tax Payment(F)	1,167	$106.28	$124,029	Direct
Feb 5, 2026	OC Owens Corning	Tax Payment(F)	147	$132.23	$19,438	Direct
Feb 4, 2026	OC Owens Corning	Award(A)	1,473	$132.83	$195,659	Direct
Feb 2, 2026	OC Owens Corning	Tax Payment(F)	379	$122.17	$46,302	Direct
Aug 12, 2025	OC Owens Corning	Sale(S)	441	$149.00	$65,709	Direct
Feb 5, 2025	OC Owens Corning	Award(A)	892	$182.15	$162,478	Direct
Feb 3, 2025	OC Owens Corning	Tax Payment(F)	458	$180.10	$82,486	Direct

1-8 of 8 transactions

About Doerfler Mari

Doerfler Mari (SEC CIK 0001957375) files insider reports with the SEC as Vice President and Controller of Owens Corning (OC).

Signal8 holds 7 ownership filings by Doerfler Mari, all Form 4s, filed between Feb 5, 2025 and May 12, 2026. Those filings report 8 transactions, from Feb 3, 2025 to May 8, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Doerfler Mari's filings is in TOLEDO, OH.

Recent filings by Doerfler Mari

May 8, 2026: Open-market sale of OC shares (Form 4, code S).
Apr 6, 2026: Tax withholding of OC shares (Form 4, code F).
Feb 5, 2026: Tax withholding of OC shares (Form 4, code F).
Feb 4, 2026: Grant or award of OC shares (Form 4, code A).
Feb 2, 2026: Tax withholding of OC shares (Form 4, code F).

Other insiders filing for Owens Corning (OC)

Marcon Rachel Barthelemy, President, Doors
DeVito Michael J, Director
Fister Todd W, President and COO
Del Monaco Nicolas, President, Roofing
Collins Jonathan Mark, EVP & Chief Financial Officer
Canovas De La Nuez Jose Manuel, President, Insulation

How to read Form 4 transaction codes