James C. Klauer

CIK: 0001729360

Transaction Breakdown

Open Market Buys (P)0 (0.0%)

High conviction signal

Open Market Sales (S)2 (8.3%)

Position reduction

Option Exercises (M)0 (0.0%)

Derivative conversions

Awards (A)3 (12.5%)

Compensation grants

Other (G, F, J, C, D, …)19 (79.2%)

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

Companies & Roles (1)

COST

COSTCO WHOLESALE CORP /NEW

Officer

Discretionary Trading P&L

Holdings

Transaction History (24 total)

COST
COSTCO WHOLESALE CORP /NEW
Oct 22, 2026
Tax Payment(F)
Direct
443 shares at avg. $1018.21$451K
COST
COSTCO WHOLESALE CORP /NEW
Oct 22, 2026
Tax Payment(F)
Direct
542 shares at avg. $1018.21$552K
COST
COSTCO WHOLESALE CORP /NEW
Oct 22, 2026
Tax Payment(F)
Direct
191 shares at avg. $1018.21$194K
COST
COSTCO WHOLESALE CORP /NEW
Oct 22, 2026
Tax Payment(F)
Direct
396 shares at avg. $1018.21$403K
COST
COSTCO WHOLESALE CORP /NEW
Oct 22, 2026
Tax Payment(F)
Direct
530 shares at avg. $1018.21$540K
COST
COSTCO WHOLESALE CORP /NEW
Sep 10, 2026
Tax Payment(F)
Direct
936 shares at avg. $902.38$845K
COST
COSTCO WHOLESALE CORP /NEW
Sep 10, 2026
Award(A)
Direct
4.1K shares-
COST
COSTCO WHOLESALE CORP /NEW
Jan 14, 2026
Sale(S)
Direct
1.5K shares at avg. $939.00$1.4M
COST
COSTCO WHOLESALE CORP /NEW
Oct 22, 2025
Tax Payment(F)
Direct
240 shares at avg. $944.68$227K
COST
COSTCO WHOLESALE CORP /NEW
Oct 22, 2025
Tax Payment(F)
Direct
191 shares at avg. $944.68$180K
COST
COSTCO WHOLESALE CORP /NEW
Oct 22, 2025
Tax Payment(F)
Direct
199 shares at avg. $944.68$188K
COST
COSTCO WHOLESALE CORP /NEW
Oct 22, 2025
Tax Payment(F)
Direct
177 shares at avg. $944.68$167K
COST
COSTCO WHOLESALE CORP /NEW
Oct 22, 2025
Tax Payment(F)
Direct
111 shares at avg. $944.68$105K
COST
COSTCO WHOLESALE CORP /NEW
Sep 10, 2025
Award(A)
Direct
4.2K shares-
COST
COSTCO WHOLESALE CORP /NEW
Sep 10, 2025
Tax Payment(F)
Direct
958 shares at avg. $956.29$916K
COST
COSTCO WHOLESALE CORP /NEW
Apr 17, 2025
Sale(S)
Direct
4K shares at avg. $981.07$3.9M
COST
COSTCO WHOLESALE CORP /NEW
Oct 22, 2024
Tax Payment(F)
Direct
198 shares at avg. $893.49$177K
COST
COSTCO WHOLESALE CORP /NEW
Oct 22, 2024
Tax Payment(F)
Direct
177 shares at avg. $893.49$158K
COST
COSTCO WHOLESALE CORP /NEW
Oct 22, 2024
Tax Payment(F)
Direct
191 shares at avg. $893.49$171K
COST
COSTCO WHOLESALE CORP /NEW
Oct 22, 2024
Tax Payment(F)
Direct
291 shares at avg. $893.49$260K
COST
COSTCO WHOLESALE CORP /NEW
Oct 22, 2024
Tax Payment(F)
Direct
240 shares at avg. $893.49$214K
COST
COSTCO WHOLESALE CORP /NEW
Sep 16, 2024
Tax Payment(F)
Direct
1.6K shares at avg. $907.87$1.5M
COST
COSTCO WHOLESALE CORP /NEW
Sep 16, 2024
Award(A)
Direct
6.7K shares-
COST
COSTCO WHOLESALE CORP /NEW
Jul 20, 2023
Will/Inheritance(W)
Indirect
99 shares-

		Type	Shares	Price		Ownership
Oct 22, 2026	COST COSTCO WHOLESALE CORP /NEW	Tax Payment(F)	443	$1018.21	$450,749	Direct
Oct 22, 2026	COST COSTCO WHOLESALE CORP /NEW	Tax Payment(F)	542	$1018.21	$551,717	Direct
Oct 22, 2026	COST COSTCO WHOLESALE CORP /NEW	Tax Payment(F)	191	$1018.21	$194,150	Direct
Oct 22, 2026	COST COSTCO WHOLESALE CORP /NEW	Tax Payment(F)	396	$1018.21	$403,391	Direct
Oct 22, 2026	COST COSTCO WHOLESALE CORP /NEW	Tax Payment(F)	530	$1018.21	$539,623	Direct
Sep 10, 2026	COST COSTCO WHOLESALE CORP /NEW	Tax Payment(F)	936	$902.38	$844,731	Direct
Sep 10, 2026	COST COSTCO WHOLESALE CORP /NEW	Award(A)	4,129	-	$0	Direct
Jan 14, 2026	COST COSTCO WHOLESALE CORP /NEW	Sale(S)	1,500	$939.00	$1,408,500	Direct
Oct 22, 2025	COST COSTCO WHOLESALE CORP /NEW	Tax Payment(F)	240	$944.68	$226,676	Direct
Oct 22, 2025	COST COSTCO WHOLESALE CORP /NEW	Tax Payment(F)	191	$944.68	$180,132	Direct
Oct 22, 2025	COST COSTCO WHOLESALE CORP /NEW	Tax Payment(F)	199	$944.68	$187,698	Direct
Oct 22, 2025	COST COSTCO WHOLESALE CORP /NEW	Tax Payment(F)	177	$944.68	$167,265	Direct
Oct 22, 2025	COST COSTCO WHOLESALE CORP /NEW	Tax Payment(F)	111	$944.68	$104,831	Direct
Sep 10, 2025	COST COSTCO WHOLESALE CORP /NEW	Award(A)	4,219	-	-	Direct
Sep 10, 2025	COST COSTCO WHOLESALE CORP /NEW	Tax Payment(F)	958	$956.29	$916,400	Direct
Apr 17, 2025	COST COSTCO WHOLESALE CORP /NEW	Sale(S)	4,000	$981.07	$3,924,280	Direct
Oct 22, 2024	COST COSTCO WHOLESALE CORP /NEW	Tax Payment(F)	198	$893.49	$177,169	Direct
Oct 22, 2024	COST COSTCO WHOLESALE CORP /NEW	Tax Payment(F)	177	$893.49	$157,842	Direct
Oct 22, 2024	COST COSTCO WHOLESALE CORP /NEW	Tax Payment(F)	191	$893.49	$170,727	Direct
Oct 22, 2024	COST COSTCO WHOLESALE CORP /NEW	Tax Payment(F)	291	$893.49	$260,206	Direct
Oct 22, 2024	COST COSTCO WHOLESALE CORP /NEW	Tax Payment(F)	240	$893.49	$214,393	Direct
Sep 16, 2024	COST COSTCO WHOLESALE CORP /NEW	Tax Payment(F)	1,610	$907.87	$1,462,050	Direct
Sep 16, 2024	COST COSTCO WHOLESALE CORP /NEW	Award(A)	6,737	-	$0	Direct
Jul 20, 2023	COST COSTCO WHOLESALE CORP /NEW	Will/Inheritance(W)	99	-	-	Indirect

1-24 of 24 transactions

About Klauer James C

Klauer James C (SEC CIK 0001729360) files insider reports with the SEC as Executive Vice President of COSTCO WHOLESALE CORP /NEW (COST).

Signal8 holds 8 ownership filings by Klauer James C, all Form 4s, filed between Sep 18, 2024 and Oct 26, 2026. Those filings report 24 transactions, from Jul 20, 2023 to Oct 22, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Klauer James C's filings is in ISSAQUAH, WA.

Recent filings by Klauer James C

Oct 22, 2026: Tax withholdings of COST shares (5 lines, Form 4, code F).
Sep 10, 2026: Tax withholding of COST shares (Form 4, code F).
Sep 10, 2026: Grant or award of COST shares (Form 4, code A).
Jan 14, 2026: Open-market sale of COST shares (Form 4, code S).
Oct 22, 2025: Tax withholdings of COST shares (5 lines, Form 4, code F).

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
Vachris Roland Michael, President and CEO
Wilderotter Mary Agnes, Director

How to read Form 4 transaction codes