Costco Wholesale
Insider trading & Transactions

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Transaction Date Insider Security Shares Price per share Total value Source
Option
GALANTI RICHARD A director, officer: Executive VP..
Stock Option 30,000 $13.44 $403,140
Option
GALANTI RICHARD A director, officer: Executive VP..
Common Stock 30,000 $13.44 $403,140
Sale
PETTERSON DAVID S other: Former Principal Acct Of..
Common Stock 5,000 $36.91 $184,530
Sale
GALANTI RICHARD A director, officer: Executive VP..
Common Stock 30,000 $13.44 $403,140
Option
PETTERSON DAVID S other: Former Principal Acct Of..
Common Stock 5,000 $36.91 $184,530
Option
PETTERSON DAVID S other: Former Principal Acct Of..
Stock Option 5,000 $36.91 $184,530
Sale
PETTERSON DAVID S other: Former Principal Acct Of..
Common Stock 5,000 $36.91 $184,530
Option
MOULTON PAUL G officer: Executive VP
Stock Option 40,000 $36 $1,440,000
Sale
ZOOK DENNIS R officer: Former Executive VP
Common Stock 75,000 $43 $3,225,000
Option
MOULTON PAUL G officer: Executive VP
Common Stock 40,000 $36 $1,440,000
Sale
MOULTON PAUL G officer: Executive VP
Common Stock 40,000 $43.93 $1,757,080
Option
ZOOK DENNIS R officer: Former Executive VP
Stock Option 75,000 $43 $3,225,000
Option
ZOOK DENNIS R officer: Former Executive VP
Common Stock 75,000 $43 $3,225,000
Option
PETTERSON DAVID S other: Former Principal Acct Of..
Common Stock 10,000 $36.91 $369,060
Option
PETTERSON DAVID S other: Former Principal Acct Of..
Stock Option 10,000 $41.66 $416,580
Sale
PETTERSON DAVID S other: Former Principal Acct Of..
Common Stock 10,000 $41.66 $416,580
Option
WALKER THOMAS KIRK officer: Executive VP
Common Stock 70,000 $11.09 $776,580
Sale
WALKER THOMAS KIRK officer: Executive VP
Common Stock 70,000 $45.33 $3,173,030
Option
WALKER THOMAS KIRK officer: Executive VP
Stock Option 20,000 $8.75 $175,000
Sale
PETTERSON DAVID S other: Former Principal Acct Of..
Common Stock 10,000 $36.91 $369,060
Option
PETTERSON DAVID S other: Former Principal Acct Of..
Common Stock 10,000 $36.91 $369,060
Option
PETTERSON DAVID S other: Former Principal Acct Of..
Stock Option 10,000 $36.91 $369,060
Option
PETTERSON DAVID S other: Former Principal Acct Of..
Stock Option 5,000 $36.91 $184,530
Sale
PETTERSON DAVID S other: Former Principal Acct Of..
Common Stock 5,000 $36.91 $184,530
Option
PETTERSON DAVID S other: Former Principal Acct Of..
Common Stock 5,000 $36.91 $184,530
Option
ZOOK DENNIS R officer: Former Executive VP
Common Stock 90,000 $38.08 $3,427,200
Sale
ZOOK DENNIS R officer: Former Executive VP
Common Stock 90,000 $45.81 $4,122,900
Option
ZOOK DENNIS R officer: Former Executive VP
Stock Option 90,000 $38.08 $3,427,200
Option
PETTERSON DAVID S other: Former Principal Acct Of..
Common Stock 15,000 $30.41 $456,150
Sale
PETTERSON DAVID S other: Former Principal Acct Of..
Common Stock 15,000 $46.24 $693,600
Option
PETTERSON DAVID S other: Former Principal Acct Of..
Stock Option 7,500 $30.41 $228,075
Option
GALANTI RICHARD A director, officer: Executive VP..
Common Stock 40,000 $11.09 $443,760
Option
PORTERA JOSEPH P officer: Executive VP
Stock Option 135,000 $32.93 $4,445,280
Sale
SINEGAL JAMES D director
Common Stock 200,000 N/A N/A
Option
PORTERA JOSEPH P officer: Executive VP
Common Stock 135,000 $32.93 $4,445,280
Option
GALANTI RICHARD A director, officer: Executive VP..
Stock Option 40,000 $11.09 $443,760
Sale
PORTERA JOSEPH P officer: Executive VP
Common Stock 135,000 $45.85 $6,189,750
Sale
GALANTI RICHARD A director, officer: Executive VP..
Common Stock 40,000 $45.73 $1,829,080
Option
WALKER THOMAS KIRK officer: Executive VP
Common Stock 50,000 $8.5 $425,000
Option
WALKER THOMAS KIRK officer: Executive VP
Stock Option 50,000 $8.5 $425,000
Option
SINEGAL JAMES D director
Stock Option 100,000 $6.66 $665,600
Option
SINEGAL JAMES D director
Common Stock 100,000 $6.66 $665,600
Sale
SINEGAL JAMES D director
Common Stock 100,000 $6.66 $665,600
Option
BROTMAN JEFFREY H director, officer: Former Chair..
Common Stock 100,000 $6.66 $665,600
Sale
BROTMAN JEFFREY H director, officer: Former Chair..
Common Stock 100,000 $6.66 $665,600
Option
BROTMAN JEFFREY H director, officer: Former Chair..
Stock Option 100,000 $6.66 $665,600
Purchase
DECKER SUSAN L director
Common Stock 10,000 $44.85 $448,450
Sale
GALANTI RICHARD A director, officer: Executive VP..
Common Stock 15,000 $8.75 $131,250
Option
GALANTI RICHARD A director, officer: Executive VP..
Common Stock 15,000 $8.75 $131,250
Option
GALANTI RICHARD A director, officer: Executive VP..
Stock Option 15,000 $8.75 $131,250

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.