Data from SEC EDGARUpdated 11/5/26, 10:33 AM PT
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Costco insider filings, in plain English

All Trades

Form 3

Self Adam Webb

Executive Vice President

Filed
9/10/26
Trade dates
None (holdings only)
Period of report
8/31/26
10b5-1 box
Not on this form version
Accession number
0000909832-26-000066

Amended by the Form 3/A filed 9/30/26. Lines marked Restated were replaced and are left out of the totals.

Table I: shares of stock

LineSecurityTrade dateSharesPriceValueOwned afterOwnershipNotes
HoldsLine 1RestatedRestated by the amendment of 9/30/26; left out of totals.Common Stock————3,526.832DirectF1

Footnotes

  1. F1

    Includes 2,726.578 shares of common stock that are unvested grants of Restricted Stock Units ("RSUs"). The vesting schedule for the RSUs is as follows: 1,016.942 shares will vest on October 22, 2026 and 1,709.636 shares will vest on October 22, 2027.

Remarks

Exhibit 24: Power of Attorney provided herewith.