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InsightsAnalysisInvestorsCongressWatchlist
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© 2026 StockSpill. Data from SEC EDGAR filings. Logos by Parqet.

PricingRead termsRead privacy policyNotes on Data
Home › COST › Insiders

COSTCO WHOLESALE CORP /NEW (COST) insider buys & sells

Insider buys
0
— value
Insider sells
16
$23.5M value
Unique buyers
0
Unique sellers
11

For the full transaction list with names, titles, and per-share prices, see the COST stock page.

Related to COST

Valuation & analysis

  • COST DCF analysis
  • Free DCF calculator
  • Compound interest calculator

Smart-money holders

  • Superinvestors holding COST
  • Politicians trading COST
  • Insider buys & sells at COST

Most-watched investors

  • Warren Buffett
  • Leopold Aschenbrenner
  • George Soros
  • Ray Dalio
  • Bill Ackman

Other popular stocks

  • AAPL
  • NVDA
  • MSFT
  • AMZN
  • GOOGL
  • META

Insider activity in COST (last 12 months)

In the last 365 days, COST insiders disclosed 0 open-market purchases and 16 sales via SEC Form 4. 0 unique insider buyers and 11 unique sellers are on record. Total disclosed value: — in buys vs $23.5M in sells.

Insider buys and sells are filed within two business days of the trade. Concentrated insider buying — especially clusters of multiple executives or directors — is one of the strongest contrarian signals in equity markets.

Key takeaways

  • 0 insider buys / 16 insider sells (last 365 days).
  • Buy/sell ratio: 0.00.
  • Latest filing: 2026-06-23.
Home › COST › Insiders

COSTCO WHOLESALE CORP /NEW (COST) insider buys & sells

Insider buys
0
— value
Insider sells
16
$23.5M value
Unique buyers
0
Unique sellers
11

For the full transaction list with names, titles, and per-share prices, see the COST stock page.

Related to COST

Valuation & analysis

  • COST DCF analysis
  • Free DCF calculator
  • Compound interest calculator

Smart-money holders

  • Superinvestors holding COST
  • Politicians trading COST
  • Insider buys & sells at COST

Most-watched investors

  • Warren Buffett
  • Leopold Aschenbrenner
  • George Soros
  • Ray Dalio
  • Bill Ackman

Other popular stocks

  • AAPL
  • NVDA
  • MSFT
  • AMZN
  • GOOGL
  • META

Insider activity in COST (last 12 months)

In the last 365 days, COST insiders disclosed 0 open-market purchases and 16 sales via SEC Form 4. 0 unique insider buyers and 11 unique sellers are on record. Total disclosed value: — in buys vs $23.5M in sells.

Insider buys and sells are filed within two business days of the trade. Concentrated insider buying — especially clusters of multiple executives or directors — is one of the strongest contrarian signals in equity markets.

Key takeaways

  • 0 insider buys / 16 insider sells (last 365 days).
  • Buy/sell ratio: 0.00.
  • Latest filing: 2026-06-23.