Arkolith/Insider Trading/COST/Form 4

Adamo Claudine

Executive Vice PresidentCOSTCO WHOLESALE CORP /NEW (COST) · full profile →Form 4 · filed Oct 24, 2025
Net Selling
Open-Market Buys
$0
Open-Market Sells
$2.5M
Net Open-Market Flow
-$2.5M
Transactions
6
6 non-derivative · 0 derivative

Non-Derivative Transactions (Table I)

DateActionSharesPriceValueOwned After
Oct 24, 2025Sell(S)3K$935.68$2.5M7K
Oct 22, 2025Tax withholding(F)122$944.68$115K10K
Oct 22, 2025Tax withholding(F)97$944.68$92K10K
Oct 22, 2025Tax withholding(F)177$944.68$167K10K
Oct 22, 2025Tax withholding(F)111$944.68$104K10K
Oct 22, 2025Tax withholding(F)199$944.68$188K10K

Transaction Codes

S
Open-market sale
F
Shares withheld for taxes

Data Source & Provenance

Parsed from a single SEC EDGAR Form 4 filing (accession 0000909832-25-000126) within minutes of acceptance. Every field above traces to the original document. Verify it directly:

View original filing on SEC.govRaw Form 4 XML