Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended September 1, 2019 or ☐TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission file number 0-20355 Costco Wholesale Corporation (Exact name of registrant as specified in its charter) Washington 91-1223280 (State or other jurisdiction of incorporation or or ...

Costco Wholesale Corporation (NASDAQ:COST) Q4 2019 Earnings Conference Call October 3, 2019 5:00 PM ET Company Participants Richard Galanti - EVP and CFO Conference Call Participants Michael Lasser - UBS Simeon Gutman - Morgan Stanley John Heinbockel - Guggenheim Securities Christopher Horvers - JPMorgan Karen Short - Barclays Chuck Grom - Gordon Haskett Scot Ciccarelli - RBC Capital Markets Bobby Griffin - Raymond James Oliver Chen - Cowen and Company Robert Ohmes - Bank of America Merrill Lynch Michael Mo ...

Table of Contents Emerging growth company ☐ UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended May 12, 2019 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission file number 0-20355 Costco Wholesale Corporation (Exact name of registrant as specified in its charter) Washington 91-1223280 (State or other juris ...

Costco Wholesale Corporation (NASDAQ:COST) Q3 2019 Earnings Conference Call May 30, 2019 5:00 PM ET Company Participants Richard Galanti - EVP & CFO Conference Call Participants Michael Lasser - UBS Edward Kelly - Wells Fargo Josh Kamboj - Morgan Stanley Scot Ciccarelli - RBC Capital Markets Chuck Grom - Gordon Haskett Christopher Mandeville - Jefferies Karen Short - Barclays Gregory Melich - Evercore ISI John Heinbockel - Guggenheim Securities Scott Mushkin - Wolfe Research Erica Eiler - Oppenheimer Operat ...

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended February 17, 2019 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission file number 0-20355 Costco Wholesale Corporation (Exact name of registrant as specified in its charter) Washington 91-1223280 (State or other jurisdiction of incorporat ...

Costco Wholesale Corporation (NASDAQ:COST) Q2 2019 Results Earnings Conference Call March 7, 2019 5:00 PM ET Company Participants Richard Galanti - Executive Vice President and Chief Financial Officer Conference Call Participants Christopher Horvers - J.P. Morgan Simeon Gutman - Morgan Stanley Chuck Grom - Gordon Haskett Edward Kelly - Wells Fargo Karen Short - Barclays John Heinbockel - Guggenheim Securities Scot Ciccarelli - RBC Capital Markets Mike Baker - Deutsche Bank Scott Mushkin - Wolfe Res ...