Summary
Updated Aug 31, 2026
Mark J. Hart is EVP-HR & External Affairs of Parker-Hannifin Corp (PH). 7 SEC Form 4 filings on record going back to 2024, most recently on 21 August 2026. Most recent open-market trade: sold $2.64M of PH on 18 August 2026. Lifetime open-market sales: $9.91M.
Recent Transactions
11Every recent SEC Form 4 transaction Mark J. Hart has reported, most recent first.
Trading Pattern
InsiderAlpha's records for Mark J. Hart go back to 2024: 7 primary Form 4 filings, an average of 2.3 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 J. Hart 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.
- Andrew D. Ross - $10.47M of PH open-market activity in the last 12 months
- Berend Bracht - $6.91M of PH open-market activity in the last 12 months
- Dinu J. Parel - $5.98M of PH open-market activity in the last 12 months
- Jennifer A. Parmentier - $4.69M of PH open-market activity in the last 12 months
- Thomas C. Gentile - $3.56M of PH open-market activity in the last 12 months
- Patrick Scott - $2.79M of PH 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 J. Hart?
Mark J. Hart is a corporate insider, tracked as EVP-HR & External Affairs of Parker-Hannifin Corp (PH). InsiderAlpha holds 7 primary Form 4 filings for them, the earliest from 2024, updated as new SEC EDGAR filings are processed.
How many SEC Form 4 filings has Mark J. Hart submitted recently?
2 primary Form 4 filings in the last 90 days, covering 1 company.
Has Mark J. Hart been buying or selling stock?
Recorded transactions: 0 open-market purchases and 5 open-market sales ($9.91M) across all tracked filings.
Where can I see all of Mark J. Hart'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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