COST Costco Wholesale Corporation

NASDAQ
$893.74

Costco Wholesale Corporation (COST) Insider Activity

What the officers, directors and large holders did with their own shares. Only open-market purchases and sales count toward the totals — grants, option exercises and shares withheld for tax are compensation mechanics, not decisions, and they're listed separately below.

30D 90D 6M 1Y
Insider signal In line Selling ran in line with COST's own trailing one-year pace, with 0% of sale value under a prearranged plan.
Cluster activity 0 buyers in the last 30 days 0 buyers in the last 90 days 1 seller in the last 90 days
Insiders buying
0
0 transactions
Insiders selling
10
14 transactions
Purchases
$0
0 shares
Sales
$19.0M
20,491 shares
Net activity
-$19.0M
purchases less sales

How much of that selling was preplanned? 0% planned / 100% discretionary

10b5-1 plan sales $0 0 transactions · 0 shares
Discretionary sales $19.0M 14 transactions · 20,491 shares

Largest single sale: $3.1M.

Where they traded

Buy Sell Dot area is proportional to transaction value.

No open-market insider purchase on record.

Recent open-market activity

Date Insider Role Action Shares Price Value Held after
DENMAN KENNETH D Director Sell 885 $957.45 $847.3K 4,779 −15.6% of holding
Frates Caton Executive Vice President Sell 700 $993.00 $695.1K 5,815 −10.7% of holding
Adamo Claudine Executive Vice President Sell 730 $1,003.02 $732.2K 6,121 −10.7% of holding
Jones Teresa A. Executive Vice President Sell 850 $986.26 $838.3K 4,228 −16.7% of holding
DECKER SUSAN L Director Sell 458 $955.00 $437.4K 8,532 −5.1% of holding
Klauer James C Executive Vice President Sell 1,500 $939.00 $1.4M 44,837 −3.2% of holding
Miller Russell D Sr. Executive Vice President Sell 1,500 $916.32 $1.4M 8,240 −15.4% of holding
POLIT JAVIER Executive Vice President Sell 558 $862.89 $481.8K 10,190 −5.2% of holding
POLIT JAVIER Executive Vice President Sell 2,049 $867.21 $1.8M 10,748 −16% of holding
Wilcox William Richard Executive Vice President Sell 2,400 $930.13 $2.2M 2,000 −54.5% of holding
Adamo Claudine Executive Vice President Sell 2,700 $935.68 $2.5M 6,851 −28.3% of holding
Barbre Tiffany Marie Other Sell 1,239 $934.62 $1.2M 5,155 −19.4% of holding
Miller Russell D Sr. Executive Vice President Sell 3,381 $915.00 $3.1M 9,740 −25.8% of holding
Frates Caton Executive Vice President Sell 1,540 $910.02 $1.4M 9,284 −14.2% of holding

Form 4s are due within two business days of a transaction, so this is close to real time — unlike the quarterly 13F data on the Institutional tab. A single large sale often reflects a prearranged 10b5-1 plan rather than a fresh view, so read a pattern of sales rather than any one of them.