Roland Michael Vachris

CIK: 0001679566

Transaction Breakdown

Open Market Buys (P)0 (0.0%)

High conviction signal

Open Market Sales (S)1 (10.0%)

Position reduction

Option Exercises (M)0 (0.0%)

Derivative conversions

Awards (A)3 (30.0%)

Compensation grants

Other (G, F, J, C, D, …)6 (60.0%)

Gifts, tax withholding, conversions, dispositions to the issuer and other codes

Companies & Roles (1)

COST

COSTCO WHOLESALE CORP /NEW

DirectorOfficer

Discretionary Trading P&L

Holdings

Transaction History (10 total)

COST
COSTCO WHOLESALE CORP /NEW
Oct 22, 2026
Award(A)
Direct
14K shares-
COST
COSTCO WHOLESALE CORP /NEW
Oct 22, 2026
Tax Payment(F)
Direct
1.4K shares at avg. $1018.21$1.4M
COST
COSTCO WHOLESALE CORP /NEW
Oct 22, 2026
Tax Payment(F)
Direct
1.1K shares at avg. $1018.21$1.1M
COST
COSTCO WHOLESALE CORP /NEW
Oct 22, 2026
Tax Payment(F)
Direct
1.1K shares at avg. $1018.21$1.2M
COST
COSTCO WHOLESALE CORP /NEW
Oct 22, 2025
Award(A)
Direct
13.8K shares-
COST
COSTCO WHOLESALE CORP /NEW
Oct 22, 2025
Tax Payment(F)
Direct
1.5K shares at avg. $944.68$1.4M
COST
COSTCO WHOLESALE CORP /NEW
Oct 22, 2025
Tax Payment(F)
Direct
1.2K shares at avg. $944.68$1.1M
COST
COSTCO WHOLESALE CORP /NEW
Mar 11, 2025
Sale(S)
Direct
3.6K shares at avg. $931.00$3.4M
COST
COSTCO WHOLESALE CORP /NEW
Oct 22, 2024
Award(A)
Direct
19.1K shares-
COST
COSTCO WHOLESALE CORP /NEW
Oct 22, 2024
Tax Payment(F)
Direct
1.7K shares at avg. $893.49$1.5M

		Type	Shares	Price		Ownership
Oct 22, 2026	COST COSTCO WHOLESALE CORP /NEW	Award(A)	13,973	-	$0	Direct
Oct 22, 2026	COST COSTCO WHOLESALE CORP /NEW	Tax Payment(F)	1,404	$1018.21	$1,429,151	Direct
Oct 22, 2026	COST COSTCO WHOLESALE CORP /NEW	Tax Payment(F)	1,121	$1018.21	$1,140,949	Direct
Oct 22, 2026	COST COSTCO WHOLESALE CORP /NEW	Tax Payment(F)	1,131	$1018.21	$1,152,082	Direct
Oct 22, 2025	COST COSTCO WHOLESALE CORP /NEW	Award(A)	13,834	-	-	Direct
Oct 22, 2025	COST COSTCO WHOLESALE CORP /NEW	Tax Payment(F)	1,493	$944.68	$1,410,454	Direct
Oct 22, 2025	COST COSTCO WHOLESALE CORP /NEW	Tax Payment(F)	1,160	$944.68	$1,095,593	Direct
Mar 11, 2025	COST COSTCO WHOLESALE CORP /NEW	Sale(S)	3,600	$931.00	$3,351,600	Direct
Oct 22, 2024	COST COSTCO WHOLESALE CORP /NEW	Award(A)	19,148	-	$0	Direct
Oct 22, 2024	COST COSTCO WHOLESALE CORP /NEW	Tax Payment(F)	1,731	$893.49	$1,546,509	Direct

1-10 of 10 transactions

About Vachris Roland Michael

Vachris Roland Michael (SEC CIK 0001679566) files insider reports with the SEC as President and CEO of COSTCO WHOLESALE CORP /NEW (COST).

Signal8 holds 4 ownership filings by Vachris Roland Michael, all Form 4s, filed between Oct 24, 2024 and Oct 26, 2026. Those filings report 10 transactions, from Oct 22, 2024 to Oct 22, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Vachris Roland Michael's filings is in ISSAQUAH, WA.

Recent filings by Vachris Roland Michael

Oct 22, 2026: Grant or award of COST shares (Form 4, code A).
Oct 22, 2026: Tax withholdings of COST shares (3 lines, Form 4, code F).
Oct 22, 2025: Grant or award of COST shares (Form 4, code A).
Oct 22, 2025: Tax withholdings of COST shares (2 lines, Form 4, code F).
Mar 11, 2025: Open-market sale of COST shares (Form 4, code S).

Other insiders filing for COSTCO WHOLESALE CORP /NEW (COST)

Sullivan John Christopher, Executive VP
Self Adam Webb, Executive Vice President
POLIT JAVIER, Executive Vice President
MILLERCHIP GARY, Executive Vice President
Wilderotter Mary Agnes, Director
STANTON JOHN W, Director

How to read Form 4 transaction codes