Summary
Updated Aug 31, 2026
Mari Doerfler is Vice President and Controller of Owens Corning (OC). 5 SEC Form 4 filings on record going back to 2025, most recently on 12 May 2026. Most recent open-market trade: sold $233K of OC on 12 May 2026. Lifetime open-market sales: $299K.
Recent Transactions
6Every recent SEC Form 4 transaction Mari Doerfler has reported, most recent first.
Trading Pattern
InsiderAlpha's records for Mari Doerfler go back to 2025: 5 primary Form 4 filings, an average of 2.5 per year. No transaction on record carries a Rule 10b5-1 flag - the filings look discretionary rather than pre-scheduled, which makes their timing more informative as a signal.
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades in the last 12 months at the companies Mari Doerfler files at. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
- Rachel Barthelemy Marcon - $84K of OC open-market activity in the last 12 months
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
Frequently Asked Questions
Who is Mari Doerfler?
Mari Doerfler is a corporate insider, tracked as Vice President and Controller of Owens Corning (OC). InsiderAlpha holds 5 primary Form 4 filings for them, the earliest from 2025, updated as new SEC EDGAR filings are processed.
When did Mari Doerfler last file a Form 4?
The most recent primary Form 4 on record is dated 12 May 2026, one of 5 filings going back to 2025.
Has Mari Doerfler been buying or selling stock?
Recorded transactions: 0 open-market purchases and 2 open-market sales ($299K) across all tracked filings.
Where can I see all of Mari Doerfler's SEC filings?
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
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