Summary
Updated Aug 31, 2026
Kenneth D. Denman is Director of COSTCO WHOLESALE CORP /NEW (COST). 9 SEC Form 4 filings on record going back to 2024, most recently on 25 June 2026. Most recent open-market trade: sold $847K of COST on 25 June 2026. Lifetime open-market purchases: $840K. Lifetime open-market sales: $1.05M.
Recent Transactions
10Every recent SEC Form 4 transaction Kenneth D. Denman has reported, most recent first.
Trading Pattern
InsiderAlpha's records for Kenneth D. Denman go back to 2024: 9 primary Form 4 filings, an average of 3.0 per year. The typical open-market purchase is $840K (1 buy totaling $840K). The largest single buy on record is $840K of QNT in 2026. Sales side: 2 recorded sales totaling $1.05M, so the filing history runs sell-heavy by dollar value. 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 Kenneth D. Denman 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.
- Hal Barron - $15.00M of QNT open-market activity in the last 12 months
- Russell D. Miller - $4.47M of COST open-market activity in the last 12 months
- Joseph Jimenez - $4.00M of QNT open-market activity in the last 12 months
- Claudine Adamo - $3.26M of COST open-market activity in the last 12 months
- Javier Polit - $2.26M of COST open-market activity in the last 12 months
- William Richard Wilcox - $2.23M of COST 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 Kenneth D. Denman?
Kenneth D. Denman is a corporate insider, tracked as Director of COSTCO WHOLESALE CORP /NEW (COST). InsiderAlpha holds 9 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 Kenneth D. Denman submitted recently?
2 primary Form 4 filings in the last 90 days, covering 2 companies.
Has Kenneth D. Denman been buying or selling stock?
Recorded transactions: 1 open-market purchase ($840K) and 2 open-market sales ($1.05M) across all tracked filings.
Where can I see all of Kenneth D. Denman'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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