Summary
Updated Aug 31, 2026
Mark G. Barberio is Director of Extra Space Storage Inc. (EXR). 3 SEC Form 4 filings on record going back to 2025, most recently on 18 May 2026.
Recent Transactions
3Every recent SEC Form 4 transaction Mark G. Barberio has reported, most recent first.
Trading Pattern
InsiderAlpha's records for Mark G. Barberio go back to 2025: 3 primary Form 4 filings, an average of 1.5 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 Mark G. Barberio 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.
- Joseph D. Margolis - $2.13M of EXR open-market activity in the last 12 months
- William T. Bosway - $1.01M of ROCK open-market activity in the last 12 months
- James S. Metcalf - $502K of ROCK open-market activity in the last 12 months
- Gwyn Goodson McNeal - $495K of EXR open-market activity in the last 12 months
- Katherine Bolanowski - $50K of ROCK open-market activity in the last 12 months
- Joseph A. Lovechio - $35K of ROCK 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 Mark G. Barberio?
Mark G. Barberio is a corporate insider, tracked as Director of Extra Space Storage Inc. (EXR). InsiderAlpha holds 3 primary Form 4 filings for them, the earliest from 2025, updated as new SEC EDGAR filings are processed.
When did Mark G. Barberio last file a Form 4?
The most recent primary Form 4 on record is dated 18 May 2026, one of 3 filings going back to 2025.
Where can I see all of Mark G. Barberio'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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