Barbre Tiffany Marie
SEC insider (Form 3/4/5 filer). CIK 0002076006. Insider at COSTCO WHOLESALE CORP /NEW (COST). 13 reported Form 4/5 transactions since Sep 2024; latest on Oct 22, 2026. Located in ISSAQUAH, WA.
Companies Barbre Tiffany Marie has filed insider reports for
- COSTCO WHOLESALE CORP /NEW (COST)
Barbre Tiffany Marie
CIK: 0002076006
Transaction Breakdown
High conviction signal
Position reduction
Derivative conversions
Compensation grants
Gifts, tax withholding, conversions, dispositions to the issuer and other codes
Companies & Roles (1)
COSTCO WHOLESALE CORP /NEW
Discretionary Trading P&L
Holdings
Transaction History (13 total)
- Oct 22, 2026COST
COSTCO WHOLESALE CORP /NEW
AwardDirect2K shares- - Oct 22, 2026COST
COSTCO WHOLESALE CORP /NEW
Tax PaymentDirect90 shares at avg. $1018.21$92K - Oct 22, 2026COST
COSTCO WHOLESALE CORP /NEW
Tax PaymentDirect94 shares at avg. $1018.21$96K - Oct 22, 2026COST
COSTCO WHOLESALE CORP /NEW
Tax PaymentDirect102 shares at avg. $1018.21$103K - Oct 22, 2026COST
COSTCO WHOLESALE CORP /NEW
Tax PaymentDirect85 shares at avg. $1018.21$86K - Oct 22, 2026COST
COSTCO WHOLESALE CORP /NEW
Tax PaymentDirect166 shares at avg. $1018.21$169K - Oct 24, 2025COST
COSTCO WHOLESALE CORP /NEW
SaleDirect1.2K shares at avg. $934.62$1.2M - Oct 22, 2025COST
COSTCO WHOLESALE CORP /NEW
Tax PaymentDirect114 shares at avg. $944.68$107K - Oct 22, 2025COST
COSTCO WHOLESALE CORP /NEW
Tax PaymentDirect90 shares at avg. $944.68$85K - Oct 22, 2025COST
COSTCO WHOLESALE CORP /NEW
Tax PaymentDirect119 shares at avg. $944.68$112K
| Type | Shares | Price | Ownership | |||
|---|---|---|---|---|---|---|
| Oct 22, 2026 | COST COSTCO WHOLESALE CORP /NEW | Award | 1,965 | - | $0 | Direct |
| Oct 22, 2026 | COST COSTCO WHOLESALE CORP /NEW | Tax Payment | 90 | $1018.21 | $91,873 | Direct |
| Oct 22, 2026 | COST COSTCO WHOLESALE CORP /NEW | Tax Payment | 94 | $1018.21 | $95,659 | Direct |
| Oct 22, 2026 | COST COSTCO WHOLESALE CORP /NEW | Tax Payment | 102 | $1018.21 | $103,385 | Direct |
| Oct 22, 2026 | COST COSTCO WHOLESALE CORP /NEW | Tax Payment | 85 | $1018.21 | $86,144 | Direct |
| Oct 22, 2026 | COST COSTCO WHOLESALE CORP /NEW | Tax Payment | 166 | $1018.21 | $169,482 | Direct |
| Oct 24, 2025 | COST COSTCO WHOLESALE CORP /NEW | Sale | 1,239 | $934.62 | $1,158,353 | Direct |
| Oct 22, 2025 | COST COSTCO WHOLESALE CORP /NEW | Tax Payment | 114 | $944.68 | $107,250 | Direct |
| Oct 22, 2025 | COST COSTCO WHOLESALE CORP /NEW | Tax Payment | 90 | $944.68 | $85,238 | Direct |
| Oct 22, 2025 | COST COSTCO WHOLESALE CORP /NEW | Tax Payment | 119 | $944.68 | $112,001 | Direct |
1-10 of 13 transactions