OC

insider transactions

Owens Corning — buys & sells by directors, officers and 10% owners (SEC Form 4).

30D 90D 1Y

Net shares · 90d

-2.6K

0 buy · 2.6K sell

Net value · 90d

-$317.4K

$0 in · $317.4K out

Sentiment · 90d

Net selling

0% buying · 100% selling

Open-market trades · 90d

0 buy · 2.6K sell

Net buy / sell volume

Tap or hover the chart for daily net volume. Green = net buying, red = net selling.

All transactions

Sell·S
May 28, 26

Rachel Barthelemy Marcon KEY

President, Doors · 10b5-1

$84.5K

700 sh · $120.71

Own -4%
Grant·A
May 14, 26

Alfred E Festa

Director

$0

154 sh

Own New
Grant·A
May 8, 26

John David Williams

Director

$46.5K

382 sh · $121.67

Own +1%
Grant·A
May 8, 26

Suzanne P Nimocks

Director

$50.4K

414 sh · $121.67

Own +1%
Grant·A
May 8, 26

Paul Edward Martin

Director

$46.5K

382 sh · $121.67

Own +5%
Grant·A
May 8, 26

Edward F Lonergan

Director

$91.3K

750 sh · $121.67

Own +1%
Grant·A
May 8, 26

Alfred E Festa

Director

$49.5K

407 sh · $121.67

Own +3%
Grant·A
May 8, 26

Adrienne Elsner

Director

$46.5K

382 sh · $121.67

Own +2%
Sell·S
May 8, 26

Mari Doerfler KEY

Vice President and Controller

$232.9K

1.9K sh · $120.92

Own -38%
Grant·A
May 8, 26

Michelle T Collins

Director

$58.2K

478 sh · $121.67

Own +23%
Grant·A
May 8, 26

Eduardo E Cordeiro

Director

$49.5K

407 sh · $121.67

Own +3%
Grant·A
May 1, 26

Todd W Fister KEY

EVP, CFO and COO

$999.9K

8.1K sh · $122.73

Own +18%
Grant·A
Apr 28, 26

Eduardo E Cordeiro

Director

$0

9.2K sh

Own +29%
Grant·A
Apr 23, 26

Michelle T Collins

Director

$0

5.3K sh

Own New
Grant·A
Apr 16, 26

Eduardo E Cordeiro

Director

$0

71 sh

Own +0%
Grant·A
Apr 13, 26

Todd W Fister

Director

$150.0K

2.3K sh · $66.32

Own +55%
Grant·A
Apr 9, 26

John David Williams

Director

$42.2K

367 sh · $114.95

Own +1%
Grant·A
Apr 9, 26

Suzanne P Nimocks

Director

$16.1K

140 sh · $114.95

Own +0%
Grant·A
Apr 9, 26

Jose Mendez-Andino

EVP, Chief Innovation Officer

$11.6K

101 sh · $114.95

Own +0%
Grant·A
Apr 9, 26

Paul Edward Martin

Director

$6.0K

52 sh · $114.95

Own +1%
Grant·A
Apr 9, 26

Edward F Lonergan

Director

$40.3K

351 sh · $114.95

Own +1%
Grant·A
Apr 9, 26

Alfred E Festa

Director

$9.8K

85 sh · $114.95

Own +1%
Grant·A
Apr 9, 26

Adrienne Elsner

Director

$14.4K

125 sh · $114.95

Own +1%
Grant·A
Apr 9, 26

Eduardo E Cordeiro

Director

$9.7K

85 sh · $114.95

Own +1%
Other·F
Apr 6, 26

Mari Doerfler KEY

Vice President and Controller

$124.0K

1.2K sh · $106.28

Own -19%

Date▾	Insider	Role	Type	Shares	Own Δ	Price	Value
May 28, 2026	Rachel Barthelemy Marcon KEY 10b5-1	President, Doors	Sell S	700	-4%	$120.71	$84.5K
May 14, 2026	Alfred E Festa	Director	Grant A	154	New	—	$0
May 8, 2026	John David Williams	Director	Grant A	382	+1%	$121.67	$46.5K
May 8, 2026	Suzanne P Nimocks	Director	Grant A	414	+1%	$121.67	$50.4K
May 8, 2026	Paul Edward Martin	Director	Grant A	382	+5%	$121.67	$46.5K
May 8, 2026	Edward F Lonergan	Director	Grant A	750	+1%	$121.67	$91.3K
May 8, 2026	Alfred E Festa	Director	Grant A	407	+3%	$121.67	$49.5K
May 8, 2026	Adrienne Elsner	Director	Grant A	382	+2%	$121.67	$46.5K
May 8, 2026	Mari Doerfler KEY	Vice President and Controller	Sell S	1.9K	-38%	$120.92	$232.9K
May 8, 2026	Michelle T Collins	Director	Grant A	478	+23%	$121.67	$58.2K
May 8, 2026	Eduardo E Cordeiro	Director	Grant A	407	+3%	$121.67	$49.5K
May 1, 2026	Todd W Fister KEY	EVP, CFO and COO	Grant A	8.1K	+18%	$122.73	$999.9K
Apr 28, 2026	Eduardo E Cordeiro	Director	Grant A	9.2K	+29%	—	$0
Apr 23, 2026	Michelle T Collins	Director	Grant A	5.3K	New	—	$0
Apr 16, 2026	Eduardo E Cordeiro	Director	Grant A	71	+0%	—	$0
Apr 13, 2026	Todd W Fister	Director	Grant A	2.3K	+55%	$66.32	$150.0K
Apr 9, 2026	John David Williams	Director	Grant A	367	+1%	$114.95	$42.2K
Apr 9, 2026	Suzanne P Nimocks	Director	Grant A	140	+0%	$114.95	$16.1K
Apr 9, 2026	Jose Mendez-Andino	EVP, Chief Innovation Officer	Grant A	101	+0%	$114.95	$11.6K
Apr 9, 2026	Paul Edward Martin	Director	Grant A	52	+1%	$114.95	$6.0K
Apr 9, 2026	Edward F Lonergan	Director	Grant A	351	+1%	$114.95	$40.3K
Apr 9, 2026	Alfred E Festa	Director	Grant A	85	+1%	$114.95	$9.8K
Apr 9, 2026	Adrienne Elsner	Director	Grant A	125	+1%	$114.95	$14.4K
Apr 9, 2026	Eduardo E Cordeiro	Director	Grant A	85	+1%	$114.95	$9.7K
Apr 6, 2026	Mari Doerfler KEY	Vice President and Controller	Other F	1.2K	-19%	$106.28	$124.0K

About OC insider trading

This page tracks insider transactions for Owens Corning (OC) reported to the U.S. Securities and Exchange Commission on Form 4. Corporate insiders — directors, executive officers and beneficial owners of more than 10% of the stock — must disclose their trades within two business days. Open-market purchases (code P) and sales (code S) made at the insider's discretion are the most-watched opportunistic signals, while awards (A), option exercises (M) and tax-withholding (F) reflect compensation rather than conviction. Trades marked 10b5-1 were made under a pre-arranged plan and are considered routine. A cluster buy — several insiders buying within a short window — is historically a stronger bullish indicator than any single trade.