Owens Corning, known for its bright pink fiberglass building insulation, has drawn unsolicited takeover interest from rival Carlisle Companies, a report that sent stocks of the companies in opposite directions.

The Wall Street Journal reported that Carlisle has made more than one unsolicited offer to acquire Owens Corning in a cash-and-stock deal that could be valued at well over $10 billion. The Journal cited people familiar with the matter, and said the price would be a significant premium to where its shares have been trading this year.

Owens Corning shares were up more than 11.6%, at $151.15 in early afternoon trading. Carlisle's stock was down 5% at $368.27.

Owens Corning couldn't be immediately reached for comment. The stock is up 30% this year, and up 6% over the past 12 months.

Owens Corning, which focuses more on the residential sector, had a market value of around $11 billion on Monday morning. Carlisle, which makes building materials for the commercial sector, had a market value of more than $15 billion.

Write to Janet H. Cho at janet.cho@dowjones.com

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June 29, 2026 14:16 ET (18:16 GMT)

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