Costco Wholesale Corp

NASDAQ: COST
Share price (5/3/24): $732.44
Market cap (5/3/24): $325 billion

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CY 2024

Other Revised 04/12/24 Costco Wholesale Corporation, Period Ending Apr 07, 2024 Pre Recorded Sales/ Trading Statement Call, Apr 10, 2024 04/09/24 Earnings Revised 03/07/24 Costco Wholesale Corporation, Q2 2024 Earnings Call, Mar 07, 2024 03/07/24 Other Revised 02/08/24 Costco Wholesale Corporation - Pre Recorded Sales/ Trading Statement Call 02/06/24 Other Revised 01/04/24 Costco Wholesale Corporation - Sales/ Trading Statement Call 01/03/24

CY 2023

Earnings Revised 12/14/23 Costco Wholesale Corporation, Q1 2024 Earnings Call, Dec 14, 2023 12/14/23 Other Revised 11/30/23 Costco Wholesale Corporation, Period Ending Nov 26, 2023 Pre Recorded Sales/ Trading Statement Call, Nov 29, 2023 11/28/23 Other Revised 11/03/23 Costco Wholesale Corporation, Period Ending Oct 29, 2023 Pre Recorded Sales/ Trading Statement Call, Nov 01, 2023 10/31/23 Other Revised 10/04/23 Costco Wholesale Corporation - Pre Recorded Sales/ Trading Statement Call 10/03/23 Earnings Revised 09/26/23 Costco Wholesale Corporation, Q4 2023 Earnings Call, Sep 26, 2023 09/26/23 Other Revised 08/30/23 Costco Wholesale Corporation, Period Ending Aug 27, 2023 Pre Recorded Sales/ Trading Statement Call, Aug 30, 2023 08/29/23 Other Revised 08/03/23 Costco Wholesale Corporation, Period Ending Jul 31, 2023 Pre Recorded Sales/ Trading Statement Call, Aug 02, 2023 08/01/23 Other Revised 07/06/23 Costco Wholesale Corporation, Period Ending Jul 02, 2023 Pre Recorded Sales/ Trading Statement Call, Jul 06, 2023 07/05/23 Other Revised 06/02/23 Costco Wholesale Corporation - Pre Recorded Sales/ Trading Statement Call 05/31/23 Earnings Revised 05/25/23 Costco Wholesale Corporation, Q3 2023 Earnings Call, May 25, 2023 05/25/23 Other Revised 05/03/23 Costco Wholesale Corporation, Period Ending Apr 30, 2023 Pre Recorded Sales/ Trading Statement Call, May 03, 2023 05/02/23 Other Revised 04/05/23 Costco Wholesale Corporation, Period Ending Apr 02, 2023 Pre Recorded Sales/ Trading Statement Call, Apr 05, 2023 04/04/23 Earnings Revised 03/02/23 Costco Wholesale Corporation, Q2 2023 Earnings Call, Mar 02, 2023 03/02/23 Other Revised 01/31/23 Costco Wholesale Corporation, Period Ending Jan 29, 2023 Pre Recorded Sales/ Trading Statement Call, Feb 01, 2023 01/31/23 Other Revised 01/04/23 Costco Wholesale Corporation - Pre Recorded Sales/ Trading Statement Call 01/04/23

CY 2022

Earnings Revised 12/08/22 Costco Wholesale Corporation, Q1 2023 Earnings Call, Dec 08, 2022 12/08/22 Other Revised 11/29/22 Costco Wholesale Corporation - Pre Recorded Sales/ Trading Statement Call 11/29/22 Other Revised 11/01/22 Costco Wholesale Corporation - Pre Recorded Sales/ Trading Statement Call 11/01/22 Other Revised 10/11/22 Costco Wholesale Corporation, Period Ending Oct 02, 2022 Pre Recorded Sales/ Trading Statement Call, Oct 12, 2022 10/11/22 Other Revised 10/04/22 Costco Wholesale Corporation - Pre Recorded Sales/ Trading Statement Call 10/04/22 Earnings Revised 09/22/22 Costco Wholesale Corporation, Q4 2022 Earnings Call, Sep 22, 2022 09/22/22 Other Revised 08/30/22 Costco Wholesale Corporation, Period Ending Aug 28, 2022 Pre Recorded Sales/ Trading Statement Call, Aug 31, 2022 08/30/22 Other Revised 08/03/22 Costco Wholesale Corporation - Sales/ Trading Statement Call 08/03/22 Other Revised 07/06/22 Costco Wholesale Corporation, Period Ending Jul 03, 2022 Pre Recorded Sales/ Trading Statement Call, Jul 07, 2022 07/06/22 Other Revised 06/01/22 Costco Wholesale Corporation, Period Ending May 29, 2022 Pre Recorded Sales/ Trading Statement Call, Jun 02, 2022 06/01/22 Earnings Revised 05/26/22 Costco Wholesale Corporation, Q3 2022 Earnings Call, May 26, 2022 05/26/22 Other Revised 05/03/22 Costco Wholesale Corporation, Period Ending May 01, 2022 Pre Recorded Sales/ Trading Statement Call, May 04, 2022 05/03/22 Other Revised 04/05/22 Costco Wholesale Corporation, Period Ending Apr 03, 2022 Pre Recorded Sales/ Trading Statement Call, Apr 06, 2022 04/05/22 Earnings Revised 03/03/22 Costco Wholesale Corporation, Q2 2022 Earnings Call, Mar 03, 2022 03/03/22 Other Revised 02/01/22 Costco Wholesale Corporation, Period Ending Jan 30, 2022 Pre Recorded Sales/ Trading Statement Call, Feb 02, 2022 02/01/22 Other Revised 01/04/22 Costco Wholesale Corporation - Pre Recorded Sales/ Trading Statement Call 01/04/22

CY 2021

Earnings Revised 12/09/21 Costco Wholesale Corporation, Q1 2022 Earnings Call, Dec 09, 2021 12/09/21 Other Revised 11/30/21 Costco Wholesale Corporation, Period Ending Nov 28, 2021 Pre Recorded Sales/ Trading Statement Call, Dec 01, 2021 11/30/21 Other Revised 11/02/21 Costco Wholesale Corporation, Period Ending Oct 31, 2021 Pre Recorded Sales/ Trading Statement Call, Nov 03, 2021 11/02/21 Other Revised 10/05/21 Costco Wholesale Corporation, Period Ending Oct 03, 2021 Pre Recorded Sales/ Trading Statement Call, Oct 06, 2021 10/05/21 Earnings Revised 04/03/24 Costco Wholesale Corporation, Q4 2021 Earnings Call, Sep 23, 2021 09/23/21 Other Revised 08/31/21 Costco Wholesale Corporation - Pre Recorded Sales/ Trading Statement Call 08/31/21 Other Revised 08/03/21 Costco Wholesale Corporation, Period Ending Aug 01, 2021 Pre Recorded Sales/ Trading Statement Call, Aug 04, 2021 08/03/21 Other Revised 07/07/21 Costco Wholesale Corporation - Pre Recorded Sales/ Trading Statement Call 07/07/21 Other Revised 06/02/21 Costco Wholesale Corporation, Period Ending May 30, 2021 Pre Recorded Sales/ Trading Statement Call, Jun 03, 2021 06/02/21 Earnings Revised 05/27/21 Costco Wholesale Corporation, Q3 2021 Earnings Call, May 27, 2021 05/27/21 Other Revised 05/19/21 Costco Wholesale Corporation Presents at Engage21, May-19-2021 12:30 PM 05/19/21 Other Revised 05/04/21 Costco Wholesale Corporation, Period Ending May 02, 2021 Pre Recorded Sales/ Trading Statement Call, May 05, 2021 05/04/21 Other Revised 04/06/21 Costco Wholesale Corporation, Period Ending Apr 04, 2021 Pre Recorded Sales/ Trading Statement Call, Apr 07, 2021 04/06/21 Earnings Revised 03/04/21 Costco Wholesale Corporation, Q2 2021 Earnings Call, Mar 04, 2021 03/04/21 Other Revised 02/03/21 Costco Wholesale Corporation, Period Ending Jan 31, 2021 Pre Recorded Sales/ Trading Statement Call, Feb 03, 2021 02/03/21 Other Revised 01/21/21 Costco Wholesale Corporation - Shareholder/Analyst Call 01/21/21 Other Revised 01/05/21 Costco Wholesale Corporation, Period Ending Jan 03, 2021 Pre Recorded Sales/ Trading Statement Call, Jan 06, 2021 01/05/21

CY 2020

Earnings Revised 12/10/20 Costco Wholesale Corporation, Q1 2021 Earnings Call, Dec 10, 2020 12/10/20 Other Revised 12/01/20 Costco Wholesale Corporation, Period Ending Nov 29, 2020 Pre Recorded Sales/ Trading Statement Call, Dec 02, 2020 12/01/20 Other Revised 11/10/20 Costco Wholesale Corporation Presents at Morgan Stanley Life After Covid Thematic Conference, Nov-10-2020 02:15 PM 11/10/20 Other Revised 11/03/20 Costco Wholesale Corporation, Period Ending Nov 01, 2020 Pre Recorded Sales/ Trading Statement Call, Nov 04, 2020 11/03/20 Other Revised 10/06/20 Costco Wholesale Corporation - Pre Recorded Sales/ Trading Statement Call 10/06/20 Earnings Revised 09/24/20 Costco Wholesale Corporation, Q4 2020 Earnings Call, Sep 24, 2020 09/24/20 Other Revised 09/01/20 Costco Wholesale Corporation - Pre Recorded Sales/ Trading Statement Call 09/01/20 Other Revised 08/04/20 Costco Wholesale Corporation, Period Ending Aug 02, 2020 Pre Recorded Sales/ Trading Statement Call, Aug 05, 2020 08/04/20 Other Revised 07/07/20 Costco Wholesale Corporation, Period Ending Jul 05, 2020 Pre Recorded Sales/ Trading Statement Call, Jul 08, 2020 07/07/20 Other Revised 06/02/20 Costco Wholesale Corporation - Pre Recorded Sales/ Trading Statement Call 06/02/20 Earnings Revised 05/28/20 Costco Wholesale Corporation, Q3 2020 Earnings Call, May 28, 2020 05/28/20 Other Revised 05/05/20 Costco Wholesale Corporation - Pre Recorded Sales/ Trading Statement Call 05/05/20 Other Revised 04/07/20 Costco Wholesale Corporation, Period Ending Apr 05, 2020 Pre Recorded Sales/ Trading Statement Call, Apr 08, 2020 04/07/20 Earnings Revised 03/05/20 Costco Wholesale Corporation, Q2 2020 Earnings Call, Mar 05, 2020 03/05/20 Other Revised 02/04/20 Costco Wholesale Corporation, Period Ending Feb 02, 2020 Pre Recorded Sales/ Trading Statement Call, Feb 05, 2020 02/04/20 Other Revised 01/07/20 Costco Wholesale Corporation, Period Ending Jan 05, 2020 Pre Recorded Sales/ Trading Statement Call, Jan 08, 2020 01/07/20

CY 2019

Earnings Revised 12/12/19 Costco Wholesale Corporation, Q1 2020 Earnings Call, Dec 12, 2019 12/12/19 Other Revised 12/03/19 Costco Wholesale Corporation, Period Ending Nov 30, 2019 Pre Recorded Sales/ Trading Statement Call, Dec 04, 2019 12/03/19 Other Revised 11/05/19 Costco Wholesale Corporation, Period Ending Nov 03, 2019 Pre Recorded Sales/ Trading Statement Call, Nov 06, 2019 11/05/19 Other Revised 10/08/19 Costco Wholesale Corporation, Period Ending Sep 30, 2019 Pre Recorded Sales/ Trading Statement Call, Oct 09, 2019 10/08/19 Earnings Revised 10/03/19 Costco Wholesale Corporation, Q4 2019 Earnings Call, Oct 03, 2019 10/03/19 Other Revised 09/04/19 Costco Wholesale Corporation - Pre Recorded Sales/ Trading Statement Call 09/04/19 Other Revised 08/06/19 Costco Wholesale Corporation, Period Ending Jul 30, 2019 Pre Recorded Sales/ Trading Statement Call, Aug 07, 2019 08/06/19 Other Revised 07/09/19 Costco Wholesale Corporation, Period Ending Jun 30, 2019 Pre Recorded Sales/ Trading Statement Call, Jul 10, 2019 07/09/19 Other Revised 06/04/19 Costco Wholesale Corporation, Period Ending Jun 02, 2019 Pre Recorded Sales/ Trading Statement Call, Jun 05, 2019 06/04/19 Earnings Revised 05/30/19 Costco Wholesale Corporation, Q3 2019 Earnings Call, May 30, 2019 05/30/19 Other Revised 05/07/19 Costco Wholesale Corporation - Pre Recorded Sales/ Trading Statement Call 05/07/19 Other Revised 04/10/19 Costco Wholesale Corporation - Sales/ Trading Statement Call 04/10/19 Earnings Revised 03/07/19 Costco Wholesale Corporation, Q2 2019 Earnings Call, Mar 07, 2019 03/07/19 Other Revised 02/05/19 Costco Wholesale Corporation, Period Ending Feb 03, 2019 Pre Recorded Sales/ Trading Statement Call, Feb 06, 2019 02/05/19 Other Revised 01/08/19 Costco Wholesale Corporation, Period Ending Jan 06, 2019 Pre Recorded Sales/ Trading Statement Call, Jan 09, 2019 01/08/19

CY 2018

Earnings Revised 12/13/18 Costco Wholesale Corporation, Q1 2019 Earnings Call, Dec 13, 2018 12/13/18 Other Revised 12/05/18 Costco Wholesale Corporation, Period Ending Dec 02, 2018 Pre Recorded Sales/ Trading Statement Call, Dec 06, 2018 12/05/18 Other Revised 11/06/18 Costco Wholesale Corporation, Period Ending Nov 04, 2018 Pre Recorded Sales/ Trading Statement Call, Nov 07, 2018 11/06/18 Other Revised 10/09/18 Costco Wholesale Corporation, Period Ending Oct 07, 2018 Pre Recorded Sales/ Trading Statement Call, Oct 10, 2018 10/09/18 Earnings Revised 10/04/18 Costco Wholesale Corporation, Q4 2018 Earnings Call, Oct 04, 2018 10/04/18 Other Revised 09/05/18 Costco Wholesale Corporation, Period Ending Sep 02, 2018 Pre Recorded Sales/ Trading Statement Call, Sep 06, 2018 09/05/18 Other Revised 08/07/18 Costco Wholesale Corporation - Pre Recorded Sales/ Trading Statement Call 08/07/18 Other Revised 07/10/18 Costco Wholesale Corporation, Period Ending Jul 08, 2018 Pre Recorded Sales/ Trading Statement Call, Jul 11, 2018 07/10/18 Other Revised 06/05/18 Costco Wholesale Corporation, Period Ending Jun 03, 2018 Pre Recorded Sales/ Trading Statement Call, Jun 06, 2018 06/05/18 Earnings Revised 05/31/18 Costco Wholesale Corporation, Q3 2018 Earnings Call, May 31, 2018 05/31/18 Other Revised 05/08/18 Costco Wholesale Corporation, Period Ending May 06, 2018 Pre Recorded Sales/ Trading Statement Call, May 09, 2018 05/08/18 Other Revised 04/10/18 Costco Wholesale Corporation - Pre Recorded Sales/ Trading Statement Call 04/10/18 Earnings Revised 03/07/18 Costco Wholesale Corporation, Q2 2018 Earnings Call, Mar 07, 2018 03/07/18 Other Revised 02/06/18 Costco Wholesale Corporation - Pre Recorded Sales/ Trading Statement Call 02/06/18 Other Revised 01/03/18 Costco Wholesale Corporation, Period Ending Dec 31, 2017 Pre Recorded Sales/ Trading Statement Call, Jan 04, 2018 01/03/18

CY 2017

Earnings Revised 12/14/17 Costco Wholesale Corporation, Q1 2018 Earnings Call, Dec 14, 2017 12/14/17 Other Revised 11/28/17 Costco Wholesale Corporation, Period Ending Nov 26, 2017 Pre Recorded Sales/ Trading Statement Call, Nov 29, 2017 11/28/17 Other Revised 11/01/17 Costco Wholesale Corporation, Period Ending Oct 29, 2017 Pre Recorded Sales/ Trading Statement Call, Nov 02, 2017 11/01/17 Earnings Revised 10/05/17 Costco Wholesale Corporation, Q4 2017 Earnings Call, Oct 05, 2017 10/05/17 Other Revised 08/29/17 Costco Wholesale Corporation, Period Ending Aug 27, 2017 Pre Recorded Sales/ Trading Statement Call, Aug 30, 2017 08/29/17 Other Revised 08/01/17 Costco Wholesale Corporation - Pre Recorded Sales/ Trading Statement Call 08/01/17 Other Revised 07/04/17 Costco Wholesale Corporation, Period Ending Jul 02, 2017 Pre Recorded Sales/ Trading Statement Call, Jul 05, 2017 07/04/17 Other Revised 05/30/17 Costco Wholesale Corporation, Period Ending May 28, 2017 Pre Recorded Sales/ Trading Statement Call, May 31, 2017 05/30/17 Earnings Revised 05/25/17 Costco Wholesale Corporation, Q3 2017 Earnings Call, May 25, 2017 05/25/17 Other Revised 05/02/17 Costco Wholesale Corporation, Period Ending Apr 30, 2017 Pre Recorded Sales/ Trading Statement Call, May 03, 2017 05/02/17 Other Revised 04/04/17 Costco Wholesale Corporation, Period Ending Apr 02, 2017 Pre Recorded Sales/ Trading Statement Call, Apr 05, 2017 04/04/17 Earnings Revised 03/02/17 Costco Wholesale Corporation, Q2 2017 Earnings Call, Mar 02, 2017 03/02/17 Other Revised 01/31/17 Costco Wholesale Corporation - Pre Recorded Sales/ Trading Statement Call 01/31/17

CY 2016

Earnings Revised 12/07/16 Costco Wholesale Corporation, Q1 2017 Earnings Call, Dec 07, 2016 12/07/16 Other Revised 11/29/16 Costco Wholesale Corporation - Pre Recorded Sales/ Trading Statement Call 11/29/16 Other Revised 11/01/16 Costco Wholesale Corporation, Period Ending Oct 30, 2016 Pre Recorded Sales/ Trading Statement Call, Nov 02, 2016 11/01/16 Other Revised 10/04/16 Costco Wholesale Corporation, Period Ending Oct 02, 2016 Pre Recorded Sales/ Trading Statement Call, Oct 05, 2016 10/04/16 Earnings Revised 09/29/16 Costco Wholesale Corporation, Q4 2016 Earnings Call, Sep 29, 2016 09/29/16 Other Revised 08/02/16 Costco Wholesale Corporation - Pre Recorded Sales/ Trading Statement Call 08/02/16 Other Revised 07/05/16 Costco Wholesale Corporation - Pre Recorded Sales/ Trading Statement Call 07/05/16 Other Revised 05/31/16 Costco Wholesale Corporation, Period Ending May 31, 2016 Pre Recorded Sales/ Trading Statement Call, Jun 01, 2016 05/31/16 Earnings Revised 05/26/16 Costco Wholesale Corporation, Q3 2016 Earnings Call, May 26, 2016 05/26/16 Earnings Revised 03/03/16 Costco Wholesale Corporation, Q2 2016 Earnings Call, Mar 03, 2016 03/03/16 Other Revised 02/02/16 Costco Wholesale Corporation, Period Ending Jan 31, 2016 Pre Recorded Sales/ Trading Statement Call, Feb 03, 2016 02/02/16 Other Revised 01/05/16 Costco Wholesale Corporation, Period Ending Jan 03, 2016 Pre Recorded Sales/ Trading Statement Call, Jan 06, 2016 01/05/16

CY 2015

Earnings Revised 12/09/15 Costco Wholesale Corporation, Q1 2016 Earnings Call, Dec 09, 2015 12/09/15 Other Revised 11/03/15 Costco Wholesale Corporation, Period Ending Nov 01, 2015 Pre Recorded Sales/ Trading Statement Call, Nov 04, 2015 11/03/15 Other Revised 10/06/15 Costco Wholesale Corporation, Period Ending Oct 04, 2015 Pre Recorded Sales/ Trading Statement Call, Oct 07, 2015 10/06/15 Earnings Revised 09/30/15 Costco Wholesale Corporation, Q4 2015 Earnings Call, Sep 30, 2015 09/30/15 Other Revised 09/01/15 Costco Wholesale Corporation, Q4 2015 Pre Recorded Sales/ Trading Statement Call, Sep 02, 2015 09/01/15 Other Revised 08/05/15 Costco Wholesale Corporation, Period Ending Aug 02, 2015 Pre Recorded Sales/ Trading Statement Call, Aug 06, 2015 08/05/15 Other Revised 07/07/15 Costco Wholesale Corporation, Period Ending Jul 05, 2015 Pre Recorded Sales/ Trading Statement Call, Jul 08, 2015 07/07/15 Earnings Revised 05/28/15 Costco Wholesale Corporation, Q3 2015 Earnings Call, May 28, 2015 05/28/15 Other Revised 05/05/15 Costco Wholesale Corporation, Period Ending May 03, 2015 Pre Recorded Sales/ Trading Statement Call, May 06, 2015 05/05/15 Earnings Revised 03/05/15 Costco Wholesale Corporation, Q2 2015 Earnings Call, Mar 05, 2015 03/05/15 Other Revised 02/03/15 Costco Wholesale Corporation, Period Ending Feb 01, 2015 Pre Recorded Sales/ Trading Statement Call, Feb 04, 2015 02/03/15

CY 2014

Earnings Revised 12/10/14 Costco Wholesale Corporation, Q1 2015 Earnings Call, Dec 10, 2014 12/10/14 Other Revised 11/05/14 Costco Wholesale Corporation - Pre Recorded Sales/ Trading Statement Call 11/05/14 Earnings Revised 10/08/14 Costco Wholesale Corporation, Q4 2014 Earnings Call, Oct 08, 2014 10/08/14 Other Revised 08/06/14 Costco Wholesale Corporation, Period Ending Aug 03, 2014 Pre Recorded Sales/ Trading Statement Call, Aug 07, 2014 08/06/14 Other Revised 07/09/14 Costco Wholesale Corporation - Pre Recorded Sales/ Trading Statement Call 07/09/14 Other Revised 06/04/14 Costco Wholesale Corporation - Pre Recorded Sales/ Trading Statement Call 06/04/14 Earnings Revised 05/29/14 Costco Wholesale Corporation, Q3 2014 Earnings Call, May 29, 2014 05/29/14 Other Revised 05/07/14 Costco Wholesale Corporation, Period Ending May 04, 2014 Pre Recorded Sales/ Trading Statement Call, May 08, 2014 05/07/14 Other Revised 04/09/14 Costco Wholesale Corporation, Period Ending Apr 06, 2014 Pre Recorded Sales/ Trading Statement Call, Apr 10, 2014 04/09/14 Earnings Revised 03/06/14 Costco Wholesale Corporation, Q2 2014 Earnings Call, Mar 06, 2014 03/06/14 Other Revised 02/05/14 Costco Wholesale Corporation - Pre Recorded Sales/ Trading Statement Call 02/05/14 Other Revised 01/08/14 Costco Wholesale Corporation - Pre Recorded Sales/ Trading Statement Call 01/08/14

CY 2013

Earnings Revised 12/11/13 Costco Wholesale Corporation, Q1 2014 Earnings Call, Dec 11, 2013 12/11/13 Other Revised 12/04/13 Costco Wholesale Corporation, Q1 2014 Pre Recorded Sales/ Trading Statement Call, Dec 05, 2013 12/04/13 Other Revised 11/06/13 Costco Wholesale Corporation, Period Ending Nov 03, 2013 Pre Recorded Sales/ Trading Statement Call, Nov 07, 2013 11/06/13 Other Revised 10/09/13 Costco Wholesale Corporation, Q4 2013 Operating Results Call, Oct 09, 2013 10/09/13 Other Revised 09/04/13 Costco Wholesale Corporation, Q4 2013 Pre Recorded Sales/ Trading Statement Call, Sep 05, 2013 09/04/13 Other Revised 08/07/13 Costco Wholesale Corporation - Pre Recorded Sales/ Trading Statement Call 08/07/13 Other Revised 07/10/13 Costco Wholesale Corporation, Period Ending Jul 07, 2013 Pre Recorded Sales/ Trading Statement Call, Jul 11, 2013 07/10/13 Other Revised 06/05/13 Costco Wholesale Corporation - Pre Recorded Sales/ Trading Statement Call 06/05/13 Earnings Revised 05/30/13 Costco Wholesale Corporation, Q3 2013 Earnings Call, May 30, 2013 05/30/13 Other Revised 05/08/13 Costco Wholesale Corporation - Pre Recorded Sales/ Trading Statement Call 05/08/13 Other Revised 04/10/13 Costco Wholesale Corporation, Period Ending Apr 07, 2013 Pre Recorded Sales/ Trading Statement Call, Apr 11, 2013 04/10/13 Earnings Revised 03/12/13 Costco Wholesale Corporation, Q2 2013 Earnings Call, Mar 12, 2013 03/12/13 Other Revised 03/06/13 Costco Wholesale Corporation, Period Ending Mar 03, 2013 Pre Recorded Sales/ Trading Statement Call, Mar 07, 2013 03/06/13 Other Revised 02/06/13 Costco Wholesale Corporation - Pre Recorded Sales/ Trading Statement Call 02/06/13 Other Revised 01/02/13 Costco Wholesale Corporation, Period Ending Dec 30, 2012 Sales/ Trading Statement Call, Jan 03, 2013 01/02/13

CY 2012

Earnings Revised 12/12/12 Costco Wholesale Corporation, Q1 2013 Earnings Call, Dec 12, 2012 12/12/12 Other Revised 11/28/12 Costco Wholesale Corporation - Special Call 11/28/12 Other Revised 11/27/12 Costco Wholesale Corporation, Period Ending Nov 25, 2012 Pre Recorded Sales/ Trading Statement Call, Nov 28, 2012 11/27/12 Other Revised 10/31/12 Costco Wholesale Corporation, Period Ending Oct 28, 2012 Pre Recorded Sales/ Trading Statement Call, Nov 01, 2012 10/31/12 Earnings Revised 10/10/12 Costco Wholesale Corporation, Q4 2012 Earnings Call, Oct 10, 2012 10/10/12 Other Revised 10/03/12 Costco Wholesale Corporation, Period Ending Sep 30, 2012 Pre Recorded Sales/ Trading Statement Call, Oct 04, 2012 10/03/12 Other Revised 08/29/12 Costco Wholesale Corporation, Period Ending Aug 26, 2012 Pre Recorded Sales/ Trading Statement Call, Aug 30, 2012 08/29/12 Other Revised 07/31/12 Costco Wholesale Corporation, Period Ending Jul 29, 2012 Pre Recorded Sales/ Trading Statement Call, Aug 01, 2012 07/31/12 Other Revised 07/04/12 Costco Wholesale Corporation, Period Ending Jul 01, 2012 Pre Recorded Sales/ Trading Statement Call, Jul 05, 2012 07/04/12 Other Revised 06/14/12 Costco Wholesale Corporation - Special Call 06/14/12 Other Revised 05/30/12 Costco Wholesale Corporation, Period Ending May 27, 2012 Pre Recorded Sales/ Trading Statement Call, May 31, 2012 05/30/12 Earnings Revised 05/24/12 Costco Wholesale Corporation, Q3 2012 Earnings Call, May 24, 2012 05/24/12 Other Revised 05/02/12 Costco Wholesale Corporation, Period Ending Apr 29, 2012 Pre Recorded Sales/ Trading Statement Call, May 03, 2012 05/02/12 Other Revised 04/04/12 Costco Wholesale Corporation - Pre Recorded Sales/ Trading Statement Call 04/04/12 Earnings Revised 02/29/12 Costco Wholesale Corporation, Q2 2012 Earnings Call, Feb 29, 2012 02/29/12 Other Revised 02/01/12 Costco Wholesale Corporation, Jan 2012 Sales/ Trading Statement Call, Feb 02, 2012 02/01/12 Other Revised 01/04/12 Costco Wholesale Corporation, Dec 2011 Sales/ Trading Statement Call, Jan 05, 2012 01/04/12

CY 2011

Earnings Revised 12/08/11 Costco Wholesale Corporation, Q1 2012 Earnings Call, Dec 08, 2011 12/08/11 Other Revised 11/02/11 Costco Wholesale Corporation, Oct 2011 Sales/ Trading Statement Call, Nov 03, 2011 11/02/11 Earnings Revised 10/05/11 Costco Wholesale Corporation, Q4 2011 Earnings Call, Oct 05, 2011 10/05/11 Other Revised 08/30/11 Costco Wholesale Corporation, Aug 2011 Sales/ Trading Statement Call, Aug 31, 2011 08/30/11 Other Revised 08/03/11 Costco Wholesale Corporation, Jul 2011 Sales/ Trading Statement Call, Aug 04, 2011 08/03/11 Other Revised 07/06/11 Costco Wholesale Corporation, Jun 2011 Sales/ Trading Statement Call, Jul 07, 2011 07/06/11 Earnings Revised 05/25/11 Costco Wholesale Corporation, Q3 2011 Earnings Call, May 25, 2011 05/25/11 Other Revised 05/04/11 Costco Wholesale Corporation, Apr 2011 Sales/ Trading Statement Call, May 05, 2011 05/04/11 Other Revised 04/06/11 Costco Wholesale Corporation, Mar 2011 Sales/ Trading Statement Call, Apr 07, 2011 04/06/11 Earnings Revised 03/02/11 Costco Wholesale Corporation, Q2 2011 Earnings Call, Mar 02, 2011 03/02/11

CY 2010

Earnings Revised 12/08/10 Costco Wholesale Corporation, Q1 2011 Earnings Call, Dec 08, 2010 12/08/10 Earnings Revised 10/06/10 Costco Wholesale Corporation, Q4 2010 Earnings Call, Oct 06, 2010 10/06/10 Earnings Revised 05/27/10 Costco Wholesale Corporation, Q3 2010 Earnings Call, May-27-2010 05/27/10 Earnings Revised 03/03/10 Costco Wholesale Corporation, Q2 2010 Earnings Call, Mar-03-2010 03/03/10

CY 2009

Earnings Revised 12/10/09 Costco Wholesale Corporation, Q1 2010 Earnings Call, Dec-10-2009 12/10/09 Earnings Revised 10/07/09 Costco Wholesale Corporation, Q4 2009 Earnings Call, Oct-07-2009 10/07/09 Earnings Revised 05/28/09 Costco Wholesale Corporation, Q3 2009 Earnings Call, May-28-2009 05/28/09 Earnings Revised 03/04/09 Costco Wholesale Corporation, Q2 2009 Earnings Call, Mar-04-2009 03/04/09

CY 2008

Earnings Revised 12/11/08 Costco Wholesale Corporation, Q1 2009 Earnings Call, Dec-11-2008 12/11/08 Earnings Revised 10/08/08 Costco Wholesale Corporation, Q4 2008 Earnings Call, Oct-08-2008 10/08/08 Earnings Revised 05/29/08 Costco Wholesale Corporation, Q3 2008 Earnings Call, May-29-2008 05/29/08 Earnings Revised 03/05/08 Costco Wholesale Corporation, Q2 2008 Earnings Call, Mar-05-2008 03/05/08 Other Revised 01/10/08 Costco Wholesale Corporation, Dec 2007 Sales/Trading Statement Call, Jan-10-2008 01/10/08

CY 2007

Earnings Revised 12/13/07 Costco Wholesale Corporation, Q1 2008 Earnings Call, Dec-13-2007 12/13/07 Earnings Revised 10/10/07 Costco Wholesale Corporation, Q4 2007 Earnings Call, Oct-10-2007 10/10/07 Earnings Revised 05/31/07 Costco Wholesale Corporation, Q3 2007 Earnings Call, May-31-2007 05/31/07 Earnings Revised 03/08/07 Costco Wholesale Corporation, Q2 2007 Earnings Call, Mar-08-2007 03/08/07

CY 2006

Earnings Revised 12/14/06 Costco Wholesale Corporation, Q1 2007 Earnings Call, Dec-14-2006 12/14/06 Earnings Revised 10/12/06 Costco Wholesale Corporation, Q4 2006 Earnings Call, Oct-12-2006 10/12/06 Earnings Revised 05/31/06 Costco Wholesale Corporation, Q3 2006 Earnings Call, May-31-2006 05/31/06 Earnings Revised 03/02/06 Costco Wholesale Corporation, Q2 2006 Earnings Call, Mar-02-2006 03/02/06