Costco Wholesale Corporation

COST · Consumer Defensive · Costco Wholesale Corporation, together with its subsidiaries, engages in the operation of membership warehouses in the United States, Puert…

Costco Wholesale Corporation (COST), in the Consumer Defensive sector, has 24 disclosed filings on Paydirt over the trailing twelve months from 8 members of Congress and 10 corporate insiders: 7 purchases and 17 sales, 1 filed past the deadline. Filers took a median of 4 days from execution to disclosure, and the most recent trade was executed Jul 30 and filed Aug 14. The most active filer was Claudine Adamo with 4 filings.

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Filings, ttm

7 buys · 17 sells · 1 late

Traders, ttm

8 congress · 10 insiders

Volume, ttmiDollar value disclosed in the window

$17.7M

estimated for Congress, as filed for insiders

Median delay

execution to disclosure

Last traded

Jul 30

Filed Aug 14

ADViAverage daily dollar volume

$2.3B

market data

Share price · 12M

$943 (+0.6%)

Adjusted for splits and dividends.

Volume by month

Buys $169K Sells $53.7M

Estimated for Congress, as filed for insiders · by filing month · past 24 months

Who filed

CA Claudine Adamo Executive Vice President 4 filings CF Caton Frates Executive Vice President 4 filings GC

Gilbert Cisneros Representative 3 filings RM

Richard Dean Dr McCormick Representative 3 filings TJ Teresa A. Jones Executive Vice President 3 filings RM Russell D Miller Sr. Executive Vice President 3 filings BW

Bruce Westerman Representative 2 filings GL

Greg Landsman Representative (Spouse) 2 filings

Recent filings

Richard Dean Dr McCormickSALE Representative $8K
$1K–15K bracket
Exec Jul 30
Filed Aug 14 Alan ArmstrongPURCHASE Senator $8K
$1K–15K bracket
Exec Mar 27
Filed Jul 21 † Dan NewhousePURCHASE Representative (Spouse) $8K
$1K–15K bracket
Exec Jul 10
Filed Jul 17 Kenneth D DenmanSALE Director $847K
885 sh × $957.45
Exec Jun 23
Filed Jun 25 · 5:30 PM ET Caton FratesSALE Executive Vice President $695K
700 sh × $993.00
Exec Apr 1
Filed Apr 1 · 5:30 PM ET Claudine AdamoSALE Executive Vice President $732K
730 sh × $1,003.02
Exec Mar 9
Filed Mar 11 · 5:30 PM ET Gilbert CisnerosPURCHASE Representative $8K
$1K–15K bracket
Exec Jan 30
Filed Feb 13 Teresa A. JonesSALE Executive Vice President $838K
850 sh × $986.26
Exec Jan 21
Filed Jan 23 · 5:30 PM ET Susan L DeckerSALE Director $437K
458 sh × $955.00
Exec Jan 16
Filed Jan 20 · 5:30 PM ET Markwayne MullinPURCHASE Senator (Joint) $33K
$15K–50K bracket
Exec Dec 29 2025
Filed Jan 16 James C KlauerSALE Executive Vice President $1.4M
1,500 sh × $939.00
Exec Jan 14
Filed Jan 15 · 5:30 PM ET Russell D MillerSALE Sr. Executive Vice President $1.4M
1,500 sh × $916.32
Exec Jan 9
Filed Jan 12 · 5:30 PM ET Gilbert CisnerosSALE Representative $8K
$1K–15K bracket
Exec Dec 24 2025
Filed Jan 12 Javier PolitSALE Executive Vice President $2.3M
2,607 sh across 2 lots
Exec Dec 29 2025
Filed Dec 31 2025 · 5:30 PM ET Richard Dean Dr McCormickPURCHASE Representative $8K
$1K–15K bracket
Exec Nov 5 2025
Filed Dec 9 2025 Gilbert CisnerosPURCHASE Representative $8K
$1K–15K bracket
Exec Oct 17 2025
Filed Nov 18 2025 John BoozmanPURCHASE Senator (Joint) $8K
$1K–15K bracket
Exec Oct 9 2025
Filed Nov 15 2025 William Richard WilcoxSALE Executive Vice President $2.2M
2,400 sh × $930.13
Exec Nov 7 2025
Filed Nov 12 2025 · 5:30 PM ET Shelley M CapitoSALE Senator (Spouse) $8K
$1K–15K bracket
Exec Oct 17 2025
Filed Nov 4 2025 Claudine AdamoSALE Executive Vice President $2.5M
2,700 sh × $935.68
Exec Oct 24 2025
Filed Oct 24 2025 · 5:30 PM ET Tiffany Marie BarbreSALE Other $1.2M
1,239 sh × $934.62
Exec Oct 24 2025
Filed Oct 24 2025 · 5:30 PM ET Valerie HoyleSALE Representative (Spouse) $8K
$1K–15K bracket
Exec Sep 23 2025
Filed Oct 10 2025 Russell D MillerSALE Sr. Executive Vice President $3.1M
3,381 sh × $915.00
Exec Sep 29 2025
Filed Oct 1 2025 · 5:30 PM ET Caton FratesSALE Executive Vice President $1.4M
1,540 sh × $910.02
Exec Sep 29 2025
Filed Sep 30 2025 · 5:30 PM ET Richard Dean Dr McCormickPURCHASE Representative $8K
$1K–15K bracket
Exec Mar 15 2023
Filed Sep 17 2025 †