Other Insiders Active in the Same Stocks
Insiders who reported open-market trades in the last 12 months at the companies Gregory Jon Sullivan 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.
- Robert A. Katz - $4.94M of MTN open-market activity in the last 12 months
- Angela A. Korch - $58K of MTN 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 Gregory Jon Sullivan?
Gregory Jon Sullivan is a corporate insider, tracked as EVP, Retail Hospitality of VAIL RESORTS INC (MTN). InsiderAlpha holds 3 primary Form 4 filings for them, the earliest from 2024, updated as new SEC EDGAR filings are processed.
When did Gregory Jon Sullivan last file a Form 4?
The most recent primary Form 4 on record is dated 29 September 2025, one of 3 filings going back to 2024.
Where can I see all of Gregory Jon Sullivan'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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