Summary
Updated Aug 31, 2026
William S. Cowan Jr. is Chief Strategy Officer of National Storage Affiliates Trust (NSA). 5 SEC Form 4 filings on record going back to 2024, most recently on 22 July 2026.
Recent Transactions
2Every recent SEC Form 4 transaction William S. Cowan Jr. has reported, most recent first.
Trading Pattern
InsiderAlpha's records for William S. Cowan Jr. go back to 2024: 5 primary Form 4 filings, an average of 1.7 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 Sector
No other insider has filed at William S. Cowan Jr.'s companies, so these are insiders reporting open-market trades at other companies in the same sector.
- Fernando Castro-Caratini - $2.96M of SUI open-market activity in the last 12 months
- Daniel K. Schlanger - $2.94M of CCI open-market activity in the last 12 months
- Eagle Point Credit Management LLC - $2.73M of ACR open-market activity in the last 12 months
- Michael E. Labelle - $2.70M of BXP open-market activity in the last 12 months
- Joel S. Marcus - $2.66M of ARE open-market activity in the last 12 months
- Jonathan Lin - $2.63M of EQIX 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 William S. Cowan Jr.?
William S. Cowan Jr. is a corporate insider, tracked as Chief Strategy Officer of National Storage Affiliates Trust (NSA). InsiderAlpha holds 5 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 William S. Cowan Jr. submitted recently?
2 primary Form 4 filings in the last 90 days, covering 1 company.
Where can I see all of William S. Cowan Jr.'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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