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

Barbre Tiffany Marie

Principal Accounting Officer

Filed
7/10/25
Trade dates
None (holdings only)
Period of report
7/1/25
10b5-1 box
Not on this form version
Accession number
0000909832-25-000054

Table I: shares of stock

LineSecurityTrade dateSharesPriceValueOwned afterOwnershipNotes
HoldsLine 1Common Stock————4,819.15DirectF1

Footnotes

  1. F1

    Represents unvested grants of Restricted Stock Units ("RSUs"). The vesting schedule for the RSUs is as follows: 1,781.702 shares will vest on October 22, 2025; 1,315.458 shares will vest on October 22, 2026; 945.906 shares will vest on October 22, 2027; 560.084 shares will vest on October 22, 2028; and 216 shares will vest on October 22, 2029.

Remarks

Exhibit 24: Power of Attorney provided herewith.