COST
COSTCO WHOLESALE CORP /NEW
Latest Form 4:Sale$847KbyDENMAN KENNETH D (Director) · filed Jun 25, 2026
COSTCO WHOLESALE CORP /NEW (COST) has 46 SEC Form 4 filings (92 transaction rows) in the rolling window, disclosed by 10 distinct insiders. Most recent filing: Jul 14, 2026.
Inside the rolling window, 10 insiders at COSTCO WHOLESALE CORP /NEW reported no open-market purchases and 14 open-market sales totaling $19.0M. Insiders have net sold $5.0M over the trailing 6 months. The most recent open-market filing is a sale of 885 shares by Director DENMAN KENNETH D, dated Jun 23, 2026, worth $847K.
- Industry:Discount Stores
- CEO:Ron Vachris
- Employees:341,000
- HQ:Issaquah, WA, US
- IPO:1986-07-09
Insider Buying
$0
reported purchases (SEC code P)
Insider Selling
$19.0M
reported sales (SEC code S)
Unique Insiders
10
in the rolling window
Market Cap
$411.8B
latest known value
Earnings: last 7 quarters
| Source | ||||||
|---|---|---|---|---|---|---|
| Director | Sale | 885 | $847K | Jun 25 | SEC ↗ | |
Frates CatonFirst in 6 months | Executive Vice President | Sale | 700 | $695K | Apr 1 | SEC ↗ |
Adamo ClaudineFirst in 5 months | Executive Vice President | Sale | 730 | $732K | Mar 11 | SEC ↗ |
Jones Teresa A.First filing | Executive Vice President | Sale | 850 | $838K | Jan 23 | SEC ↗ |
DECKER SUSAN LFirst filing | Director | Sale | 458 | $437K | Jan 20 | SEC ↗ |
Klauer James CFirst filing | Executive Vice President | Sale | 1,500 | $1.4M | Jan 15 | SEC ↗ |
Miller Russell DFirst in 3 months | Sr. Executive Vice President | Sale | 1,500 | $1.4M | Jan 12 | SEC ↗ |
POLIT JAVIERFirst filing | Executive Vice President | Sale | 2,049 | $1.8M | Dec 31 | SEC ↗ |
POLIT JAVIERFirst filing | Executive Vice President | Sale | 558.305 | $482K | Dec 31 | SEC ↗ |
Wilcox William RichardFirst filing | Executive Vice President | Sale | 2,400 | $2.2M | Nov 12 | SEC ↗ |
Barbre Tiffany MarieFirst filing | Principal Accounting Officer | Sale | 1,239.383 | $1.2M | Oct 24 | SEC ↗ |
Adamo ClaudineFirst filing | Executive Vice President | Sale | 2,700 | $2.5M | Oct 24 | SEC ↗ |
Miller Russell DFirst filing | Sr. Executive Vice President | Sale | 3,381 | $3.1M | Oct 1 | SEC ↗ |
Frates CatonFirst filing | Executive Vice President | Sale | 1,540 | $1.4M | Sep 30 | SEC ↗ |
Congress trading COST
See timeline →- RRep. Rich McCormickSale$1,001 - $15,0002026-07-30
- RRep. Dan NewhousePurchase$1,001 - $15,0002026-07-10
STOCK Act disclosures are filed up to 45 days after the trade. Amount is a disclosed range, not an exact figure.
Frequently asked questions
How many SEC Form 4 insider filings does COST have?
COSTCO WHOLESALE CORP /NEW (COST) has 46 SEC Form 4 filings (92 transaction rows) in the rolling 365-day window, disclosed by 10 distinct insiders. Most recent filing: Jul 14, 2026.
When was the most recent SEC Form 4 filing for COST?
The most recent Form 4 filing for COST on Tracefour is dated Jul 14, 2026.
What is the net insider flow at COST over the last 6 months?
Over the trailing 180 days, insiders at COST have net sold $5.0M based on SEC Form 4 disclosures.
What is the total insider buy and sell value at COST in the current window?
Inside the rolling window, insiders at COST bought $0 and sold $19.0M based on SEC Form 4 filings.
Can I get alerts for COST insider trading?
Yes. Tracefour sends a free email when a new SEC Form 4 purchase or sale is filed at COSTCO WHOLESALE CORP /NEW (COST). Alerts are set per company from the page itself, there is no paid tier, and each email links to the original filing on SEC EDGAR.
Related companies
COSTCO WHOLESALE CORP /NEW is in the Retail Trade sector.