Summary
Updated Aug 30, 2026
Russell D. Miller is Sr. Executive Vice President of COSTCO WHOLESALE CORP /NEW (COST). 5 SEC Form 4 filings on record going back to 2024, most recently on 12 January 2026. Most recent open-market trade: sold $1.37M of COST on 12 January 2026. Lifetime open-market sales: $8.39M.
Recent Transactions
7Every recent SEC Form 4 transaction Russell D. Miller has reported, most recent first.
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades in the last 12 months at the companies Russell D. Miller 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.
- 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
- Caton Frates - $2.10M of COST open-market activity in the last 12 months
- James C. Klauer - $1.41M of COST open-market activity in the last 12 months
- Tiffany Marie Barbre - $1.16M 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 Russell D. Miller?
Russell D. Miller is a corporate insider, tracked as Sr. Executive Vice President of COSTCO WHOLESALE CORP /NEW (COST). InsiderAlpha holds 5 primary Form 4 filings for them, the earliest from 2024, updated as new SEC EDGAR filings are processed.
When did Russell D. Miller last file a Form 4?
The most recent primary Form 4 on record is dated 12 January 2026, one of 5 filings going back to 2024.
Has Russell D. Miller been buying or selling stock?
Recorded transactions: 0 open-market purchases and 3 open-market sales ($8.39M) across all tracked filings.
Where can I see all of Russell D. Miller'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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