COST COSTCO WHOLESALE CORPORATION

COM (common), issuer CIK 909832

4,074 managers (4,142 13F filers) reported a position in COST shares at 2025-12-31, 316,984,800 shares in all. 110 filers opened a position and 174 filers sold out during the quarter.

Managers: 4,074
13F filers: 4,142
New: 110
Added: 1,564
Reduced: 1,653
Sold out: 174
Shares held by filers: 316,984,800

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

The latest Form 4 transactions, non-derivative.
Owner	Date	Shares	Price	Filing
Wilcox William Richardofficer (Executive Vice President)	2026-10-13	-1,100 S	$958.205	Form 4

13F holders, Q4 2025

Filers in the available 13F reports with a share position at 2025-12-31, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

Holder	Shares	Value	% of portfolio	Change	Source
SECURITY NATIONAL BANK OF SO DAK	511	$441K	0.22%	0	13F-HR Timeline
ARVEST INVESTMENTS, INC.	509	$439K	0.06%	+244	13F-HR Timeline
Accretive Wealth Partners, LLC	508	$438K	0.13%	-17	13F-HR Timeline
Green Ridge Wealth Planning LLC	508	$438K	0.22%		13F-HR Timeline
PLIMOTH TRUST CO LLC	508	$438K	0.1%	0	13F-HR Timeline
CAP Partners, LLC	508	$438K	0.25%	+1	13F-HR Timeline
SOA Wealth Advisors, LLC.	17,769	$437K	0.07%	-9	13F-HR Timeline
Targeted Financial Services LLC	497	$437K	0.38%		13F-HR Timeline
Ankerstar Wealth, LLC	507	$437K	0.44%		13F-HR Timeline
Clay Northam Wealth Management, LLC	507	$437K	0.24%	0	13F-HR Timeline
Polymer Capital Management (US) LLC	506	$436K	0.06%	new	13F-HR Timeline
Clifford Group, LLC	505	$436K	0.34%	-20	13F-HR Timeline
CAMPBELL NEWMAN ASSET MANAGEMENT INC	505	$435K	0.03%	0	13F-HR Timeline
Narus Financial Partners, LLC	503	$434K	0.12%	+3	13F-HR Timeline
Legacy Wealth Managment, LLC/IDin group Legacy Wealth Managment, LLC/…	503	$434K	0.21%	+31	13F-HR Timeline Group
Windsor Capital Management, LLC	503	$434K	0.12%	+41	13F-HR Timeline
ACORN CREEK CAPITAL LLC	502	$433K	0.16%	-26	13F-HR Timeline
Hutchens & Kramer Investment Management…	501	$432K	0.15%	-43	13F-HR Timeline
Greenhouse Wealth Management, LLC	501	$432K	0.26%	0	13F-HR Timeline
MORRIS FINANCIAL CONCEPTS, INC.	501	$432K	0.15%	-6	13F-HR Timeline
Detalus Advisors, LLC	501	$432K	0.11%	-1	13F-HR Timeline
AVENIR CORP	500	$431K	0.05%	0	13F-HR Timeline
VERITY Wealth Advisors	500	$431K	0.27%	0	13F-HR Timeline
Summa Corp.	500	$431K	0.18%	-44	13F-HR Timeline
Hidden Cove Wealth Management, LLC	498	$430K	0.28%	+8	13F-HR Timeline
Sonoma Allocations LLC	448	$430K	0.14%	-347	13F-HR Timeline
CORNERSTONE ENTERPRISES, LLC	496	$428K	0.2%	0	13F-HR Timeline
PRUDENT INVESTORS NETWORK, INC.	496	$428K	0.1%	-45	13F-HR Timeline
Revisor Wealth Management LLC	446	$427K	0.11%	+37	13F-HR Timeline
Shulman DeMeo Asset Management LLC	495	$427K	0.1%	+1	13F-HR Timeline
OPAL CAPITAL LLC	428	$426K	0.11%		13F-HR Timeline
Grant Private Wealth Management Inc	494	$426K	0.26%	-125	13F-HR Timeline
Worth Financial Advisory Group, LLC	494	$426K	0.21%	-47	13F-HR Timeline
ArrowMark Colorado Holdings LLC	493	$425K	0.01%	0	13F-HR Timeline
Schaeffer Financial LLC	493	$425K	0.37%	0	13F-HR Timeline
VALLEY NATIONAL ADVISERS INC	492	$424K	0.06%	-14	13F-HR Timeline
MRA Advisory Group	492	$424K	0.18%	+175	13F-HR Timeline
Team Financial Group, LLC	491	$424K	0.19%	0	13F-HR Timeline
GoalVest Advisory LLC	491	$423K	0.08%	+97	13F-HR Timeline
Elite Financial, Inc.	490	$422K	0.19%	-20	13F-HR Timeline
OSTERWEIS CAPITAL MANAGEMENT INCin group OSTERWEIS CAPITAL MANAGEMENT …	489	$422K	0.02%	-19	13F-HR Timeline Group
LIGHTHOUSE FINANCIAL SERVICES INC /ADV	488	$421K	0.1%		13F-HR Timeline
Equity Wealth Partners, LLC	488	$421K	0.27%	+10	13F-HR Timeline
Willis Johnson & Associates, Inc.	488	$421K	0.03%	-26	13F-HR Timeline
Index Technologies Group LLC	488	$421K	0.44%		13F-HR Timeline
Five Pine Wealth Management	487	$420K	0.27%	+1	13F-HR Timeline
BOURGEON CAPITAL MANAGEMENT LLC	487	$420K	0.07%	0	13F-HR Timeline
OKABENA INVESTMENT SERVICES INC	487	$420K	0.08%	new	13F-HR Timeline
Kidder Stephen W	487	$420K	0.12%	-10	13F-HR Timeline
High Note Wealth, LLC	487	$420K	0.08%	0	13F-HR Timeline
HHM Wealth Advisors, LLC	485	$419K	0.05%	-6	13F-HR Timeline
Geneva Partners, LLC	485	$418K	0.15%	-3	13F-HR Timeline
Leonteq Securities AG	485	$418K	0.02%	-783	13F-HR Timeline
LWM Advisory Services, LLC	485	$418K	0.25%	-12	13F-HR Timeline
Security Financial Services, INC.	484	$417K	0.07%	-28	13F-HR Timeline
Quattro Advisors LLC	483	$417K	0.33%		13F-HR Timeline
AVITY INVESTMENT MANAGEMENT INC.	483	$417K	0.03%	-3	13F-HR Timeline
ASL Financial, LLC	483	$417K	0.33%		13F-HR Timeline
Christensen, King & Associates Investme…	482	$416K	0.18%	-20	13F-HR Timeline
GSG Advisors LLC	482	$415K	0.11%	+10	13F-HR Timeline
Activest Wealth Management	482	$415K	0.08%	-125	13F-HR Timeline
COFG Advisors, LLC	481	$415K	0.1%		13F-HR Timeline
Johnson Bixby & Associates, LLC	481	$414K	0.05%	+15	13F-HR Timeline
JOURNEY RETIREMENT PLANNING & INVESTMEN…	480	$414K	0.09%		13F-HR Timeline
GUERRA PAN ADVISORS, LLC	478	$412K	0.24%	0	13F-HR Timeline
Koesten, Hirschmann & Crabtree, INC.	477	$411K	0.2%	+150	13F-HR Timeline
RESTON WEALTH MANAGEMENT LLC	476	$410K	0.13%	+112	13F-HR Timeline
SUMMITRY LLC	476	$410K	0.02%	-54	13F-HR Timeline
Fourth Dimension Wealth, LLC	476	$410K	0.15%	+95	13F-HR Timeline
Triasima Portfolio Management inc.	475	$410K	0.06%	-4,314	13F-HR Timeline
YARGER WEALTH STRATEGIES, LLC	475	$409K	0.18%	-197	13F-HR Timeline
Flatrock Wealth Partners LLC	474	$409K	0.2%		13F-HR/A Timeline
CAPE ANN SAVINGS BANK	474	$409K	0.21%	+9	13F-HR Timeline
RS CRUM INC.	473	$408K	0.08%	-10	13F-HR Timeline
Stewardship Advisors, LLC	472	$407K	0.09%	+5	13F-HR Timeline
Samalin Investment Counsel, LLC	471	$406K	0.14%	-132	13F-HR Timeline
CGC Financial Services, LLC	471	$406K	0.11%	-16	13F-HR Timeline
Kaufman Rossin Wealth, LLC	471	$406K	0.21%	-28	13F-HR Timeline
Lorne Steinberg Wealth Management Inc.	470	$405K	0.09%	+14	13F-HR Timeline
Core Wealth Advisors, Inc.	469	$404K	0.1%	-46	13F-HR Timeline
Stonebridge Financial Group, LLC	468	$404K	0.03%	+62	13F-HR Timeline
Sharkey, Howes & Javer	468	$403K	0.05%	-4	13F-HR Timeline
Hopwood Financial Services, Inc.	467	$403K	0.28%	-63	13F-HR Timeline
FIRST AMERICAN BANK	466	$402K	0.02%	-156	13F-HR Timeline
SAXON INTERESTS, INC.	466	$402K	0.14%	-33	13F-HR Timeline
LANDAAS & CO /WI /ADV	465	$401K	0.09%	-77	13F-HR Timeline
FIDEURAM - INTESA SANPAOLO PRIVATE BANK…	465	$401K	0.01%		13F-HR/A Timeline
Meritas Wealth Management, LLC	465	$401K	0.19%	0	13F-HR Timeline
SPWM Advisors LLC	465	$401K	0.38%		13F-HR Timeline
HighMark Wealth Management LLC	464	$400K	0.16%	-23	13F-HR Timeline
MOTIVE WEALTH ADVISORS	463	$399K	0.17%	-45	13F-HR Timeline
ERn Financial, LLC	462	$398K	0.07%	-9	13F-HR Timeline
Running Point Capital Advisors, LLC	462	$398K	0.11%	-75	13F-HR Timeline
FOSTER & MOTLEY INC	462	$398K	0.02%	-22	13F-HR Timeline
Gilbert & Cook, Inc.	461	$398K	0.05%	+56	13F-HR Timeline
Financial Alternatives, Inc	461	$398K	0.23%	-226	13F-HR Timeline
Piedmont Capital Management, LLC/NC	461	$398K	0.26%		13F-HR Timeline
Gunderson Capital Management LLC	460	$397K	0.18%	+12	13F-HR Timeline
Rather & Kittrell, Inc.	460	$397K	0.06%	+40	13F-HR Timeline
PRECEDENT WEALTH PARTNERS, LLC	459	$396K	0.08%	+32	13F-HR Timeline
WALLED LAKE PLANNING & WEALTH MANAGEMEN…	459	$395K	0.13%	+3	13F-HR Timeline
Founders Capital Management	458	$395K	0.21%	0	13F-HR Timeline
Investment Advisory Group, LLC	458	$395K	0.1%	+18	13F-HR Timeline
Hamilton Point Investment Advisors, LLC	457	$395K	0.06%	+236	13F-HR Timeline
LeConte Wealth Management, LLC	456	$393K	0.26%	-1	13F-HR Timeline
BREAKTHRU ADVISORY SERVICES, LLC	456	$393K	0.25%	+5	13F-HR Timeline
Great Diamond Partners, LLC	455	$392K	0.08%	-32	13F-HR Timeline
FLAGSHIP WEALTH ADVISORS, LLC	455	$392K	0.11%	0	13F-HR Timeline
BIRCHBROOK, INC.	455	$392K	0.2%	0	13F-HR Timeline
Next Level Private LLC	455	$392K	0.1%	+6	13F-HR Timeline
Alliance Wealth Advisors, LLC /UT	454	$392K	0.08%	+57	13F-HR Timeline
Perissos Private Wealth Management, LLC	452	$390K	0.34%	0	13F-HR Timeline
Three Seasons Wealth, LLC	452	$390K	0.04%	-5	13F-HR Timeline
ENDEAVOR PRIVATE WEALTH, INC.	452	$390K	0.11%	-22	13F-HR Timeline
Westshore Wealth, LLC	451	$389K	0.13%	-24	13F-HR Timeline
Three Magnolias Financial Advisors, LLC	451	$389K	0.24%	0	13F-HR Timeline
Quantum Private Wealth, LLC	450	$388K	0.11%	+10	13F-HR Timeline
PANORAMIC INVESTMENT ADVISORS, LLC	449	$387K	0.21%	0	13F-HR Timeline
Affiance Financial, LLC	448	$387K	0.06%	+8	13F-HR Timeline
Cottage Street Advisors LLC	448	$387K	0.16%	-8	13F-HR Timeline
Granite Bay Wealth Management, LLC	448	$386K	0.09%	+26	13F-HR Timeline
Core Alternative Capital	448	$386K	0.11%	+343	13F-HR Timeline
Tripletail Wealth Management, LLC	448	$386K	0.49%	-20	13F-HR Timeline
FreeGulliver LLC	446	$385K	0.17%	-40	13F-HR Timeline
Fund Advisors of America Inc/FL	445	$384K	0.35%		13F-HR Timeline
GW&K Investment Management, LLC	445	$384K	<0.01%	+22	13F-HR Timeline
Novak & Powell Financial Services, Inc.	445	$384K	0.2%	-4	13F-HR Timeline
Owen LaRue, LLC	444	$383K	0.15%	-236	13F-HR Timeline
Brucke Financial, Inc.	444	$383K	0.21%	-15	13F-HR Timeline
Collaborative Wealth Managment Inc.	444	$383K	0.13%	new	13F-HR Timeline
Schrum Private Wealth Management LLC	443	$382K	0.28%	0	13F-HR Timeline
Seaside Wealth Management, Inc.	442	$381K	0.11%	-4	13F-HR Timeline
AUCTUS ADVISORS LLC	440	$379K	0.35%		13F-HR Timeline
Bell Investment Advisors, Inc	439	$379K	0.06%	-12	13F-HR Timeline
Scissortail Wealth Management, LLC	439	$379K	0.09%	0	13F-HR Timeline
Semus Wealth Partners LLC	439	$378K	0.2%	-111	13F-HR Timeline
G2 CAPITAL MANAGEMENT, LLC / OH	438	$377K	0.09%	+2	13F-HR Timeline
BAKER TILLY WEALTH MANAGEMENT, LLC	437	$377K	0.09%	-9	13F-HR Timeline
Sageworth Trust Co	437	$377K	0.02%	-2,230	13F-HR Timeline
Northeast Financial Group, Inc.in group Northeast Financial Group, In…	436	$377K	0.09%	-4	13F-HR Timeline Group
HOURGLASS CAPITAL, LLC	436	$376K	0.08%	+70	13F-HR Timeline
Hickory Point Bank & Trust	436	$376K	0.27%	0	13F-HR Timeline
Charter Capital Management, LLC\DE	435	$375K	0.19%	0	13F-HR Timeline
Bulltick Wealth Management, LLC	435	$375K	0.08%	new	13F-HR Timeline
ATX Financial Planning, LLC	435	$375K	0.29%		13F-HR Timeline
Stordahl Capital Management, Inc.	435	$375K	0.08%	0	13F-HR Timeline
Ark Wealth Advisors LLC	434	$374K	0.4%		13F-HR Timeline
Jacksonville Wealth Management, LLC	433	$373K	0.26%	-48	13F-HR Timeline
Tacita Capital Inc	432	$373K	0.22%	+19	13F-HR Timeline
Salomon & Ludwin, LLC	425	$372K	0.03%	-132	13F-HR Timeline
Burford Brothers, Inc.	430	$371K	0.15%	-162	13F-HR Timeline
AssuredPartners Investment Advisors, LLC	430	$371K	0.06%	-19	13F-HR Timeline
FIRETHORN WEALTH PARTNERS, LLC	428	$370K	0.14%	-45	13F-HR Timeline
NORTHWEST WEALTH MANAGEMENT, LLC	428	$369K	0.06%	-39	13F-HR Timeline
NCM Capital Management, LLC	428	$369K	0.14%	+15	13F-HR Timeline
MLG Wealth Management DBA Pine Grove Fi…	427	$368K	0.04%		13F-HR Timeline
Amplius Wealth Advisors, LLC	427	$368K	0.03%	+1	13F-HR Timeline
Mason Investment Advisory Services, Inc.	427	$368K	0.02%	-201	13F-HR Timeline
PENNINGTON PARTNERS & CO., LLC	427	$368K	0.15%	-12	13F-HR Timeline
PFG Private Wealth Management, LLC	426	$367K	0.16%	+38	13F-HR Timeline
Spectrum Planning & Advisory Services I…	425	$367K	0.19%	-7	13F-HR Timeline
MOULTON WEALTH MANAGEMENT, INC	429	$367K	0.35%	+1	13F-HR Timeline
PHILLIPS FINANCIAL MANAGEMENT, LLC	425	$367K	0.02%	-52	13F-HR Timeline
Armor Investment Advisors, LLC	425	$367K	0.13%	-43	13F-HR Timeline
FIRST FINANCIAL BANK - TRUST DIVISION	424	$366K	0.03%	+92	13F-HR Timeline
PICTON MAHONEY ASSET MANAGEMENT	424	$366K	<0.01%	new	13F-HR Timeline
Cedarwood Wealth LLC	374	$365K	0.41%		13F-HR Timeline
Fearless Solutions, LLC dba Best Invest	423	$365K	0.22%	0	13F-HR Timeline
Cascades Capital Asset Management, LLC	423	$365K	0.15%	-41	13F-HR Timeline
Range Advisory, LLC	422	$364K	0.09%		13F-HR Timeline
RFG - Bristol Wealth Advisors, LLC	421	$363K	0.1%	-141	13F-HR Timeline
Covenant Partners, LLC	421	$363K	0.11%	+1	13F-HR Timeline
George Kaiser Family Foundation	420	$362K	0.05%	0	13F-HR Timeline
Seascape Capital Management	420	$362K	0.1%	-3	13F-HR Timeline
Goodman Advisory Group, LLC	419	$361K	0.09%	0	13F-HR Timeline
Grange Capital, LLC	418	$360K	0.35%	-20	13F-HR Timeline
Eldridge Investment Advisors, Inc.	417	$360K	0.08%	+18	13F-HR Timeline
Elgethun Capital Management	417	$359K	0.06%	+17	13F-HR Timeline
JEPPSON WEALTH MANAGEMENT, LLC	415	$358K	0.11%	+27	13F-HR Timeline
Essential Investment Partners LLC	414	$357K	0.34%		13F-HR Timeline
Kure Advisory, LLC	413	$356K	0.2%	+35	13F-HR Timeline
Cambridge Advisors Inc.	413	$356K	0.07%	-200	13F-HR Timeline
CATHY PARETO & ASSOCIATES, INC	412	$356K	0.25%	0	13F-HR Timeline
Goldstream Capital Management Ltd	412	$355K	0.15%	0	13F-HR Timeline
Code Waechter LLC	412	$355K	0.23%	-16	13F-HR Timeline
Integrity Wealth Solutions LLC	412	$355K	0.14%	+24	13F-HR Timeline
SP Asset Management LLC	411	$354K	0.03%	+1	13F-HR Timeline
LATHROP INVESTMENT MANAGEMENT CO	410	$354K	0.06%	+26	13F-HR Timeline
FIDUCIENT ADVISORS LLC	410	$354K	0.04%	-504	13F-HR Timeline
Ledgewood Wealth Advisors, LLC	410	$354K	0.2%	0	13F-HR Timeline
Summit Financial Consulting LLC	410	$354K	0.26%	+2	13F-HR Timeline
Stonebridge Capital Advisors LLC	410	$353K	0.02%	+106	13F-HR Timeline
DEFINE FINANCIAL, LLC	408	$352K	0.2%	+50	13F-HR Timeline
DecisionMap Wealth Management, LLC	408	$352K	0.22%	+30	13F-HR Timeline
Cranbrook Wealth Management, LLC	407	$351K	0.07%	0	13F-HR Timeline
JMN Financial LLC	405	$350K	0.35%		13F-HR Timeline
Auto-Owners Insurance Coin group Auto-Owners Insurance Co	405	$349K	0.01%	0	13F-HR/A Timeline Group
Diversified Portfolios, Inc.	404	$348K	0.03%	+34	13F-HR Timeline
Summit Financial Strategies, Inc.	403	$348K	0.03%	+8	13F-HR Timeline
Legacy Financial Strategies, LLC	403	$348K	0.06%	+53	13F-HR Timeline

Events

Wilcox William Richard sold 1,100 COST shares on 2026-10-13, Form 4 filed 2026-10-14. 0000909832-26-000098
Accepted 2026-10-14 23:00:30 UTC, ingested 2026-10-14 23:01:45 UTC