Costco Wholesale
Insider trading & Transactions

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Transaction Date Insider Security Shares Price per share Total value Source
Sale
LIBENSON RICHARD M director, other: Director Emeri..
Common Stock 39,334 $94.83 $3,729,965
Option
BROTMAN JEFFREY H director, officer: Former Chair..
Stock Option 150,000 $37.35 $5,602,500
Sale
BROTMAN JEFFREY H director, officer: Former Chair..
Common Stock 150,000 $37.35 $5,602,500
Sale
SINEGAL JAMES D director
Common Stock 16,000 $97.11 $1,553,712
Sale
PETTERSON DAVID S other: Former Principal Acct Of..
Common Stock 1,835 $96.48 $177,041
Option
BROTMAN JEFFREY H director, officer: Former Chair..
Common Stock 150,000 $37.35 $5,602,500
Option
DECKER SUSAN L director
Common Stock 9,000 $44.89 $404,010
Option
DECKER SUSAN L director
Stock Option 9,000 $44.89 $404,010
Option
GATES WILLIAM H II other: Former Director
Common Stock 16,500 $40.57 $669,405
Option
GATES WILLIAM H II other: Former Director
Stock Option 4,500 $37.35 $168,075
Sale
GATES WILLIAM H II other: Former Director
Common Stock 7,262 $97.38 $707,159
Sale
SINEGAL JAMES D director
Common Stock 16,000 $102.1 $1,633,536
Sale
SINEGAL JAMES D director
Common Stock 16,000 $95.92 $1,534,656
Option
SINEGAL JAMES D director
Common Stock 200,000 $40.57 $8,114,000
Option
SINEGAL JAMES D director
Stock Option 50,000 $37.35 $1,867,500
Option
SINEGAL JAMES D director
Common Stock 100,000 $37.35 $3,735,000
Option
SINEGAL JAMES D director
Stock Option 100,000 $37.35 $3,735,000
Sale
SINEGAL JAMES D director
Common Stock 100,000 $37.35 $3,735,000
Sale
MCKAY JOHN D officer: Executive Vice President
Common Stock 2,500 $96.79 $241,978
Sale
SINEGAL JAMES D director
Common Stock 16,000 $95.65 $1,530,320
Option
BROTMAN JEFFREY H director, officer: Former Chair..
Common Stock 47,756 $30.41 $1,452,260
Option
BROTMAN JEFFREY H director, officer: Former Chair..
Stock Option 47,756 $30.41 $1,452,260
Sale
BROTMAN JEFFREY H director, officer: Former Chair..
Common Stock 47,756 $30.41 $1,452,260
Option
BROTMAN JEFFREY H director, officer: Former Chair..
Common Stock 102,244 $30.41 $3,109,240
Sale
BROTMAN JEFFREY H director, officer: Former Chair..
Common Stock 102,244 $30.41 $3,109,240
Option
BROTMAN JEFFREY H director, officer: Former Chair..
Stock Option 102,244 $30.41 $3,109,240
Sale
EVANS DANIEL J director
Common Stock 7,621 $90.71 $691,293
Sale
SINEGAL JAMES D director
Common Stock 16,000 $87.95 $1,407,168
Sale
SINEGAL JAMES D director
Common Stock 16,000 N/A N/A
Option
RUCKELSHAUS JILL S other: Former Director
Common Stock 12,000 $30.41 $364,920
Option
RUCKELSHAUS JILL S other: Former Director
Stock Option 12,000 $30.41 $364,920
Sale
RUCKELSHAUS JILL S other: Former Director
Common Stock 12,000 $30.41 $364,920
Sale
SINEGAL JAMES D director
Common Stock 16,000 N/A N/A
Sale
SCHUTT DOUGLAS W officer: Former Executive VP
Common Stock 15,000 N/A N/A
Sale
SINEGAL JAMES D director
Common Stock 16,000 N/A N/A
Option
JELINEK W CRAIG director, officer: President an..
Common Stock 75,000 $39.02 $2,926,500
Option
JELINEK W CRAIG director, officer: President an..
Stock Option 30,000 $38.79 $1,163,700
Sale
ZOOK DENNIS R officer: Former Executive VP
Common Stock 7,900 N/A N/A
Sale
JELINEK W CRAIG director, officer: President an..
Common Stock 75,000 N/A N/A
Option
MUNGER CHARLES T director
Common Stock 6,000 $39.65 $237,900
Option
GALANTI RICHARD A director, officer: Executive VP..
Stock Option 20,000 $33.75 $675,000
Option
MUNGER CHARLES T director
Stock Option 6,000 $39.65 $237,900
Sale
GALANTI RICHARD A director, officer: Executive VP..
Common Stock 23,000 N/A N/A
Option
GALANTI RICHARD A director, officer: Executive VP..
Common Stock 20,000 $33.75 $675,000
Sale
MCKAY JOHN D officer: Executive Vice President
Common Stock 4,000 $88 $352,000
Sale
SINEGAL JAMES D director
Common Stock 16,000 N/A N/A
Sale
SINEGAL JAMES D director
Common Stock 16,000 N/A N/A
Sale
JAMES HAMILTON E director, officer: Chairman of ..
Common Stock 12,000 $39.65 $475,800
Option
JAMES HAMILTON E director, officer: Chairman of ..
Common Stock 12,000 $39.65 $475,800
Option
JAMES HAMILTON E director, officer: Chairman of ..
Stock Option 12,000 $39.65 $475,800

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.