Costco Wholesale
Insider trading & Transactions

Last updated:

Transaction Date Insider Security Shares Price per share Total value Source
Option
PETTERSON DAVID S other: Former Principal Acct Of..
Common Stock 7,500 $39.25 $294,375
Sale
MEISENBACH JOHN W director
Common Stock 2,600 $58.56 $152,256
Option
PETTERSON DAVID S other: Former Principal Acct Of..
Stock Option 7,500 $37.35 $280,125
Sale
PETTERSON DAVID S other: Former Principal Acct Of..
Common Stock 7,500 $58.33 $437,475
Option
PETTERSON DAVID S other: Former Principal Acct Of..
Common Stock 7,500 $37.35 $280,125
Sale
PETTERSON DAVID S other: Former Principal Acct Of..
Common Stock 7,500 $55.93 $419,475
Option
PETTERSON DAVID S other: Former Principal Acct Of..
Stock Option 7,500 $33.75 $253,125
Option
PETTERSON DAVID S other: Former Principal Acct Of..
Common Stock 7,500 $33.75 $253,125
Option
ZOOK DENNIS R officer: Former Executive VP
Stock Option 60,000 $37.35 $2,241,000
Sale
ZOOK DENNIS R officer: Former Executive VP
Common Stock 60,000 N/A N/A
Option
ZOOK DENNIS R officer: Former Executive VP
Common Stock 60,000 $37.35 $2,241,000
Sale
PETTERSON DAVID S other: Former Principal Acct Of..
Common Stock 920 $55.5 $51,060
Sale
MEISENBACH JOHN W director
Common Stock 1,500 $54.12 $81,180
Sale
PORTERA JOSEPH P officer: Executive VP
Common Stock 60,000 $53.99 $3,239,400
Option
PORTERA JOSEPH P officer: Executive VP
Common Stock 60,000 $37.35 $2,241,000
Option
PORTERA JOSEPH P officer: Executive VP
Stock Option 60,000 $37.35 $2,241,000
Sale
BROTMAN JEFFREY H director, officer: Former Chair..
Common Stock 150,000 $53.58 $8,037,450
Option
SINEGAL JAMES D director
Common Stock 200,000 $13.44 $2,687,600
Sale
SINEGAL JAMES D director
Common Stock 100,000 N/A N/A
Option
SINEGAL JAMES D director
Stock Option 200,000 $13.44 $2,687,600
Sale
BROTMAN JEFFREY H director, officer: Former Chair..
Common Stock 200,000 $53.01 $10,601,400
Option
BROTMAN JEFFREY H director, officer: Former Chair..
Stock Option 200,000 $13.44 $2,687,600
Option
BROTMAN JEFFREY H director, officer: Former Chair..
Common Stock 200,000 $13.44 $2,687,600
Option
MEISENBACH JOHN W director
Common Stock 16,000 $14.06 $225,008
Sale
MEISENBACH JOHN W director
Common Stock 16,000 $53.37 $853,920
Option
MEISENBACH JOHN W director
Stock Option 16,000 $14.06 $225,008
Sale
MEISENBACH JOHN W director
Common Stock 1,500 $52.46 $78,690
Option
MUNGER CHARLES T director
Common Stock 16,000 $14.06 $225,008
Option
MUNGER CHARLES T director
Stock Option 16,000 $14.06 $225,008
Option
PETTERSON DAVID S other: Former Principal Acct Of..
Common Stock 10,000 $43 $430,000
Sale
PETTERSON DAVID S other: Former Principal Acct Of..
Common Stock 10,000 $57.91 $579,100
Sale
DICERCHIO RICHARD D director
Common Stock 84,000 $22.88 $1,921,500
Option
DICERCHIO RICHARD D director
Common Stock 84,000 $22.88 $1,921,500
Option
DICERCHIO RICHARD D director
Stock Option 84,000 $22.88 $1,921,500
Option
PETTERSON DAVID S other: Former Principal Acct Of..
Stock Option 10,000 $43 $430,000
Sale
MEISENBACH JOHN W director
Common Stock 1,500 $56.89 $85,335
Option
JELINEK W CRAIG director, officer: President an..
Common Stock 54,500 $13.44 $732,371
Option
JELINEK W CRAIG director, officer: President an..
Stock Option 54,500 $13.44 $732,371
Sale
JELINEK W CRAIG director, officer: President an..
Common Stock 54,500 $13.44 $732,371
Sale
WALKER THOMAS KIRK officer: Executive VP
Common Stock 48,000 $55.83 $2,679,600
Option
WALKER THOMAS KIRK officer: Executive VP
Common Stock 48,000 $38.79 $1,861,920
Option
WALKER THOMAS KIRK officer: Executive VP
Stock Option 48,000 $38.79 $1,861,920
Option
JELINEK W CRAIG director, officer: President an..
Stock Option 15,500 $13.44 $208,289
Sale
JELINEK W CRAIG director, officer: President an..
Common Stock 15,500 $56.31 $872,836
Option
JELINEK W CRAIG director, officer: President an..
Common Stock 15,500 $13.44 $208,289
Sale
PETTERSON DAVID S other: Former Principal Acct Of..
Common Stock 7,500 $37.35 $280,125
Option
PETTERSON DAVID S other: Former Principal Acct Of..
Common Stock 7,500 $37.35 $280,125
Option
PETTERSON DAVID S other: Former Principal Acct Of..
Stock Option 7,500 $37.35 $280,125
Sale
MEISENBACH JOHN W director
Common Stock 1,500 $55.76 $83,640
Option
WALKER THOMAS KIRK officer: Executive VP
Common Stock 48,000 $38.79 $1,861,920

Insider trading

Monitoring trades made by the management members or major shareholders of companies may help create a sharper picture of what is happening inside the companies. Base your decisions on buys or sells of the people involved and do the right thing at the right time.

Who is insider?

Every director or senior officer, as well as any other entity or individual owning more than 10% of the company’s shares on the stock market, is called an insider. Such people or entities are allowed to buy/sell the company's shares under strictly controlled conditions. Key premise here is that none of them can make trades based on non-public information about the company.