COST COSTCO WHOLESALE CORPORATION

COM (common), issuer CIK 909832

4,200 managers (4,278 13F filers) reported a position in COST shares at 2026-03-31, 320,333,954 shares in all. 249 filers opened a position and 127 filers sold out during the quarter.

Managers: 4,200
13F filers: 4,278
New: 249
Added: 1,799
Reduced: 1,638
Sold out: 127
Shares held by filers: 320,333,954

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, Q1 2026

Filers in the available 13F reports with a share position at 2026-03-31, 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
Cooper Financial Group	4,347	$4.33M	0.44%	+63	13F-HR Timeline
ARGUS INVESTORS' COUNSEL, INC.	4,343	$4.33M	3.85%	-251	13F-HR Timeline
MOODY NATIONAL BANK TRUST DIVISIONin group MOODY NATIONAL BANK TRUST DIV…	4,307	$4.29M	0.41%	+71	13F-HR Timeline Group
Knights of Columbus Asset Advisors LLC	4,304	$4.29M	0.24%	+408	13F-HR Timeline
CITIZENS & NORTHERN CORPin group CITIZENS & NORTHERN CORP	4,302	$4.29M	1.07%	-71	13F-HR Timeline Group
AssuredPartners Investment Advisors, LLC	4,195	$4.27M	0.46%	+3,765	13F-HR Timeline
Somerset Group LLC	4,269	$4.27M	3.17%	+28	13F-HR Timeline
Norway Savings Bank	4,280	$4.26M	2.02%	+100	13F-HR Timeline
Illumine Investment Management, LLC	4,279	$4.26M	3.28%	-25	13F-HR Timeline
AIRE ADVISORS, LLC	4,276	$4.26M	0.78%	-343	13F-HR Timeline
ALERUS FINANCIAL NA	4,264	$4.25M	0.21%	+389	13F-HR Timeline
Accuvest Global Advisors	4,260	$4.25M	3.96%	-814	13F-HR Timeline
W.H. Cornerstone Investments Inc.	4,251	$4.24M	2.65%	+217	13F-HR Timeline
Hillsdale Investment Management Inc.	4,248	$4.23M	0.12%	+730	13F-HR Timeline
West Branch Capital LLC	4,246	$4.23M	1.13%	+320	13F-HR Timeline
JERICHO FINANCIAL, LLP	4,245	$4.23M	2.67%	-532	13F-HR Timeline
DeDora Capital, Inc.	4,238	$4.22M	1.04%	-6	13F-HR Timeline
CIGNA INVESTMENTS INC /NEWin group CIGNA INVESTMENTS INC /NEW	4,232	$4.22M	0.66%	-42	13F-HR Timeline Group
RWWM, INC.	4,227	$4.21M	0.31%	-75	13F-HR Timeline
Bay Colony Advisory Group, Inc d/b/a Ba…	4,226	$4.21M	0.51%	-56	13F-HR Timeline
Ignite Planners, LLC	4,224	$4.21M	0.65%	-28	13F-HR Timeline
Douglas Lane & Associates, LLC	4,211	$4.2M	0.06%	-24	13F-HR Timeline
Bedell Frazier Investment Counselling, …	4,209	$4.19M	0.85%	+12	13F-HR Timeline
Hodges Capital Management Inc.	4,204	$4.19M	0.35%	-1,253	13F-HR Timeline
Garde Capital, Inc.	4,201	$4.19M	0.25%	+62	13F-HR Timeline
Ebert Capital Management Inc.	4,199	$4.18M	4.27%	-10	13F-HR Timeline
GRIMES & Co WEALTH MANAGEMENT, LLC	4,192	$4.18M	0.12%	+240	13F-HR Timeline
JGP Wealth Management, LLC	4,190	$4.17M	0.43%	-241	13F-HR Timeline
Coastal Bridge Advisors, LLC	4,186	$4.17M	0.3%	-120	13F-HR Timeline
Covenant Asset Management, LLC	4,166	$4.15M	0.85%	-99	13F-HR Timeline
EARNED WEALTH ADVISORS, LLC	4,161	$4.15M	0.28%	+30	13F-HR Timeline
Sustainable Insight Capital Management,…	4,154	$4.14M	1.39%	+960	13F-HR Timeline
Bryn Mawr Trust Advisors, LLC	4,152	$4.14M	0.2%	-230	13F-HR Timeline
Columbia Bank	4,149	$4.13M	1.18%	-46	13F-HR Timeline
SATURNA CAPITAL CORP	4,146	$4.13M	0.06%	-100	13F-HR Timeline
Faithward Advisors, LLC	4,146	$4.13M	0.59%	+2,441	13F-HR Timeline
Hilltop Holdings Inc.in group Hilltop Holdings Inc.	4,134	$4.12M	0.37%	-2,944	13F-HR Timeline Group
Grey Ledge Advisors, LLC	4,126	$4.11M	0.93%	+61	13F-HR Timeline
Old North State Trust, LLC	4,118	$4.1M	2.44%	+111	13F-HR Timeline
ABLE Financial Group, LLC	4,098	$4.08M	0.8%	-135	13F-HR Timeline
ARBOR TRUST WEALTH ADVISORS, LLC	4,090	$4.08M	1.79%	-427	13F-HR Timeline
Berbice Capital Management LLC	4,085	$4.07M	2.66%	-400	13F-HR Timeline
Walkner Condon Financial Advisors LLC	4,075	$4.06M	0.54%	+42	13F-HR Timeline
CARRET ASSET MANAGEMENT, LLC	4,063	$4.05M	0.4%	0	13F-HR Timeline
CONNORS INVESTOR SERVICES INC	4,056	$4.04M	0.37%	-3,496	13F-HR Timeline
Cherry Creek Investment Advisors, Inc.	4,055	$4.04M	1.76%	-240	13F-HR Timeline
Gibbs Wealth Management	4,054	$4.04M	0.53%	new	13F-HR Timeline
Compton Wealth Advisory Group, LLC	4,051	$4.04M	0.9%	+54	13F-HR Timeline
Deuterium Capital Management, LLC	4,050	$4.04M	4.69%	0	13F-HR Timeline
M3 Wealth Management, LLC	4,047	$4.03M	3.1%	-47	13F-HR Timeline
Finivi Inc.	4,044	$4.03M	2.2%	+362	13F-HR Timeline
EQUITABLE TRUST CO	4,043	$4.03M	0.19%	+18	13F-HR Timeline
Avidian Wealth Enterprises, LLC	4,032	$4.02M	0.13%	+1,814	13F-HR Timeline
Core Wealth Partners LLC	4,027	$4.01M	1.87%	-12	13F-HR Timeline
Jacobi Capital Management LLC	4,026	$4.01M	0.22%	+160	13F-HR Timeline
Aries Wealth Management	4,025	$4.01M	0.88%	+107	13F-HR Timeline
Archford Capital Strategies, LLC	4,024	$4.01M	0.46%	+58	13F-HR Timeline
Bollard Group LLC	4,016	$4M	0.12%	+56	13F-HR Timeline
Curi Capital, LLC	4,015	$4M	0.07%	+181	13F-HR Timeline
Capstone Financial Advisors, Inc.	4,013	$4M	0.22%	-1	13F-HR Timeline
Fortis Capital Advisors, LLC	4,007	$3.99M	0.52%	+608	13F-HR Timeline
Gallagher Capital Advisors, LLC	4,005	$3.99M	2.69%	-5	13F-HR Timeline
Petix & Botte Co	3,992	$3.98M	0.89%	-3,969	13F-HR Timeline
Golden State Wealth Management, LLC	3,983	$3.97M	0.43%	+159	13F-HR Timeline
Nicholas Hoffman & Company, LLC.	3,974	$3.96M	0.09%	-18	13F-HR Timeline
Harfst & Associates, Inc.	3,968	$3.95M	0.71%	-112	13F-HR Timeline
Gould Capital, LLC	3,960	$3.95M	2.39%	+385	13F-HR Timeline
111 Capital	3,960	$3.95M	0.97%	-694	13F-HR Timeline
Strong Tower Advisory Services	3,959	$3.94M	0.74%	+95	13F-HR Timeline
Kingsman Wealth Management, Inc.	3,950	$3.94M	2.21%	-1,427	13F-HR Timeline
MONETARY MANAGEMENT GROUP INC	3,940	$3.93M	0.94%	+50	13F-HR Timeline
HIGHLINE WEALTH PARTNERS LLC	3,920	$3.91M	1%	-36	13F-HR Timeline
NTV Asset Management LLC	3,916	$3.9M	0.43%	-166	13F-HR Timeline
Cairn Investment Group, Inc.	3,911	$3.9M	1.94%	0	13F-HR Timeline
Aspire Capital Advisors LLC	3,900	$3.89M	0.88%	-17	13F-HR Timeline
Warm Springs Advisors Inc.	3,899	$3.89M	3.3%	0	13F-HR Timeline
Ironwood Investment Counsel, LLC	3,885	$3.87M	0.56%	-294	13F-HR Timeline
MTM Investment Management, LLC	3,874	$3.86M	1.22%	-26	13F-HR Timeline
NFSG Corp	3,870	$3.86M	0.63%	+39	13F-HR Timeline
PATHWAY WEALTH MANAGEMENT LLC	3,865	$3.85M	3.64%	0	13F-HR Timeline
Wilmington Savings Fund Society, FSB	3,857	$3.84M	0.09%	-437	13F-HR Timeline
Lynch Asset Management, Inc.	3,850	$3.84M	1.29%	0	13F-HR Timeline
PDS Planning, Inc	3,847	$3.83M	0.25%	+54	13F-HR Timeline
HAGER INVESTMENT MANAGEMENT SERVICES, L…	3,843	$3.83M	2.1%	-139	13F-HR Timeline
OXFORD FINANCIAL GROUP, LTD. LLC	3,842	$3.83M	0.21%	-152	13F-HR Timeline
Game Plan Financial Advisors, LLC	3,836	$3.82M	1.72%	+1,465	13F-HR Timeline
DOHENY ASSET MANAGEMENT /CA	3,830	$3.82M	2.49%	-400	13F-HR Timeline
PINCUS CAPITAL MANAGEMENT, LP	3,825	$3.81M	2.65%	-10	13F-HR Timeline
Wayfinding Financial, LLC	3,825	$3.81M	1.65%	-127	13F-HR Timeline
JAMES INVESTMENT RESEARCH, INC.	3,821	$3.81M	0.43%	-77	13F-HR Timeline
WISCONSIN CAPITAL MANAGEMENT LLC	3,817	$3.8M	2.09%	-50	13F-HR Timeline
Platform Technology Partners	3,816	$3.8M	0.73%	+268	13F-HR Timeline
Counterweight Ventures, LLC	3,801	$3.79M	2.13%	-412	13F-HR Timeline
Highview Capital Management LLC/DE/	3,799	$3.79M	1.38%	-615	13F-HR Timeline
FCG Investment Co	3,796	$3.78M	1.66%		13F-HR Timeline
Southeast Asset Advisors, LLC	3,794	$3.78M	0.41%	-20	13F-HR Timeline
Ironwood Financial, llc	3,794	$3.78M	0.66%	+17	13F-HR Timeline
FRED ALGER MANAGEMENT, LLCin group FRED ALGER MANAGEMENT, LLC	3,786	$3.77M	0.02%	+2,321	13F-HR Timeline Group
Naviter Wealth, LLC	3,780	$3.77M	0.47%	+46	13F-HR Timeline
Aviance Capital Partners, LLC	3,776	$3.76M	0.44%	0	13F-HR Timeline
Krilogy Financial LLC	3,810	$3.76M	0.12%	+614	13F-HR Timeline
Symphony Financial, Ltd. Co.	3,754	$3.73M	0.49%	-641	13F-HR Timeline
XML Financial, LLC	3,740	$3.73M	0.3%	-311	13F-HR Timeline
NorthStar Asset Management LLC /NJ/	3,739	$3.73M	1.8%	-111	13F-HR Timeline
Castle Rock Wealth Management, LLC	3,670	$3.72M	0.81%	+46	13F-HR Timeline
Legacy Wealth Management, LLC / MS	3,736	$3.72M	1.06%	+13	13F-HR Timeline
Whitener Capital Management, Inc.	3,731	$3.72M	0.85%	+170	13F-HR Timeline
SILVER OAK SECURITIES, INCORPORATED	3,724	$3.71M	0.27%	-144	13F-HR Timeline
Longbow Finance SA	3,723	$3.71M	0.67%	new	13F-HR Timeline
PRINCETON CAPITAL MANAGEMENT LLC	3,722	$3.71M	1.01%	+89	13F-HR Timeline
NorthCoast Asset Management LLC	3,716	$3.7M	0.09%	-68	13F-HR Timeline
GARRISON POINT ADVISORS, LLC	3,711	$3.7M	1.69%	-79	13F-HR Timeline
RiverFront Investment Group, LLC	3,700	$3.69M	0.06%	+1,185	13F-HR Timeline
Range Rock Capital, LLC	3,697	$3.68M	7.89%	+3,386	13F-HR Timeline
WT Wealth Management	3,686	$3.67M	1.09%	+63	13F-HR Timeline
International Private Wealth Advisors L…	3,682	$3.67M	2.24%	+359	13F-HR Timeline
Accurate Wealth Management, LLC	3,672	$3.67M	0.44%	+1,435	13F-HR Timeline
Perennial Investment Advisors, LLC	3,676	$3.67M	0.29%	-640	13F-HR Timeline
T. Rowe Price Investment Management, In…	3,675	$3.66M	<0.01%	+1,925	13F-HR Timeline
Hamrick Investment Counsel, llc	3,674	$3.66M	2.03%	+1,013	13F-HR Timeline
MOKAN Wealth Management Inc.	3,658	$3.65M	1.62%	-584	13F-HR Timeline
Nvest Financial, LLC	3,662	$3.65M	1.36%	+331	13F-HR Timeline
Venturi Wealth Management, LLC	3,652	$3.64M	0.16%	+267	13F-HR Timeline
Garner Asset Management Corp	3,651	$3.64M	1.43%	-191	13F-HR Timeline
Peak Asset Management, LLC	3,648	$3.63M	0.64%	-267	13F-HR Timeline
Westmount Partners, LLC	3,647	$3.63M	0.9%	+180	13F-HR Timeline
Cyndeo Wealth Partners, LLC	3,646	$3.63M	0.19%	-121	13F-HR Timeline
Sand Hill Global Advisors, LLC	3,644	$3.63M	0.12%	+141	13F-HR Timeline
Roehl & Yi Investment Advisors, LLC	162,518	$3.63M	1.36%	+207	13F-HR Timeline
Kentucky Farm Bureau Mutual Insurance Co	3,637	$3.62M	1.1%	0	13F-HR Timeline
Beaton Management Co. Inc.	3,631	$3.62M	1.61%	+65	13F-HR Timeline
CATALYST FINANCIAL PARTNERS LLC	3,630	$3.62M	0.43%	+1,106	13F-HR Timeline
Diversified Enterprises, LLC	3,628	$3.62M	0.2%	+1,429	13F-HR Timeline
RMR Capital Management, LLC	3,627	$3.61M	2.61%	0	13F-HR Timeline
Werlinich Asset Management, LLC	3,624	$3.61M	1.75%	0	13F-HR Timeline
Argo Wealth Advisory, LLC	3,622	$3.61M	2.12%	+9	13F-HR Timeline
Hilltop National Bank	3,617	$3.6M	0.86%	-70	13F-HR Timeline
K.J. Harrison & Partners Inc	3,609	$3.6M	0.59%	-470	13F-HR Timeline
CHANNEL WEALTH LLC	3,605	$3.59M	0.87%	+205	13F-HR Timeline
Capital Planning LLC	3,602	$3.59M	1.17%	+34	13F-HR Timeline
Winch Advisory Services, LLC	3,600	$3.59M	0.82%	+44	13F-HR Timeline
Oxler Private Wealth LLC	3,597	$3.58M	1.12%	-32	13F-HR Timeline
Fortitude Advisory Group L.L.C.	3,591	$3.58M	1.61%	+105	13F-HR Timeline
Arjuna Capital	3,583	$3.57M	0.91%	+121	13F-HR Timeline
SIGNATURE ESTATE & INVESTMENT ADVISORS …in group SIGNATURE ESTATE & INVESTMENT…	3,577	$3.56M	0.07%	+173	13F-HR Timeline Group
AK GLOBAL ASSET MANAGEMENT, LLC	3,575	$3.56M	3.35%	-5	13F-HR Timeline
EADS & HEALD WEALTH MANAGEMENT	3,569	$3.56M	1.77%	-37	13F-HR Timeline
Enhancing Capital LLC	3,560	$3.55M	2.63%	0	13F-HR Timeline
ROMAN BUTLER FULLERTON & CO	3,439	$3.54M	0.97%	-61	13F-HR Timeline
CONDOR CAPITAL MANAGEMENT	3,549	$3.54M	0.3%	-15	13F-HR Timeline
Cornerstone Planning, LLC	3,544	$3.53M	0.8%	+61	13F-HR Timeline
Terra Nova Asset Management LLC	3,532	$3.52M	2.6%	+158	13F-HR Timeline
Northside Capital Management, LLC	3,504	$3.49M	0.31%	-203	13F-HR Timeline
AFT, FORSYTH & COMPANY, INC.	3,503	$3.49M	1.64%	0	13F-HR Timeline
Elyxium Wealth, LLC	3,498	$3.49M	1.12%	-494	13F-HR Timeline
Forum Financial Management, LPin group Forum Financial Management, LP	3,497	$3.48M	0.05%	-2,166	13F-HR Timeline Group
Nadler Financial Group, Inc.	3,497	$3.48M	0.34%	-71	13F-HR Timeline
Triad Wealth Partners, LLC	3,491	$3.48M	0.28%	+438	13F-HR Timeline
DELTEC ASSET MANAGEMENT LLC	3,485	$3.47M	0.64%	0	13F-HR Timeline
Henson-Edgewater Management, LLC	3,485	$3.47M	2.21%	+460	13F-HR Timeline
CRAWFORD INVESTMENT COUNSEL INC	3,479	$3.47M	0.06%	+135	13F-HR Timeline
C2P Capital Advisory Group, LLC d.b.a. …	3,476	$3.46M	0.2%	+907	13F-HR Timeline
Verde Capital Management	3,474	$3.46M	0.74%	+348	13F-HR Timeline
DARK FOREST CAPITAL MANAGEMENT LP	3,473	$3.46M	0.31%	+2,755	13F-HR Timeline
Shepherd Financial Partners LLC	3,472	$3.46M	0.33%	-16	13F-HR Timeline
IFC Advisors LLC	3,457	$3.45M	0.49%	-5	13F-HR Timeline
Triton Wealth Management, PLLC	3,467	$3.44M	1.28%	-1	13F-HR Timeline
Obermeyer Wealth Partners	3,451	$3.44M	0.16%	+201	13F-HR Timeline
Arrow Financial Corpin group Arrow Financial Corp	3,434	$3.42M	0.34%	-119	13F-HR Timeline Group
MITCHELL MCLEOD PUGH & WILLIAMS INC	3,432	$3.42M	0.5%	-135	13F-HR Timeline
Decatur Capital Management, Inc.	3,430	$3.42M	1.56%	-55	13F-HR Timeline
O'Brien Greene & Co. Inc	3,424	$3.41M	0.97%	-21	13F-HR Timeline
44 WEALTH MANAGEMENT LLC	3,424	$3.41M	1.19%	-42	13F-HR Timeline
Klingman & Associates, LLC	3,418	$3.41M	0.16%	+100	13F-HR Timeline
Ellsworth Advisors, LLC	3,413	$3.4M	0.64%	+264	13F-HR Timeline
TOWNSQUARE CAPITAL LLC	3,409	$3.4M	0.77%	+238	13F-HR Timeline
Fairbanks Capital Management, Inc.	3,407	$3.39M	2.12%	-118	13F-HR Timeline
Allred Capital Management, LLC	3,403	$3.39M	1.24%	-7	13F-HR Timeline
FOUNDERS FINANCIAL SECURITIES LLC	3,279	$3.38M	0.19%	-195	13F-HR/A Timeline
BCM ADVISORS, LLC	3,335	$3.38M	0.67%	0	13F-HR Timeline
BENEDICT FINANCIAL ADVISORS INC	3,384	$3.37M	0.7%	-33	13F-HR Timeline
MONEY CONCEPTS CAPITAL CORP	3,382	$3.37M	0.19%	+211	13F-HR Timeline
RD Lewis Holdings, Inc.	3,262	$3.37M	2.92%	+43	13F-HR Timeline
BROWN, LISLE/CUMMINGS, INC.	3,378	$3.37M	0.84%	+52	13F-HR Timeline
SMITH CHAS P & ASSOCIATES PA CPASin group SMITH CHAS P & ASSOCIATES PA …	3,376	$3.36M	0.18%	-117	13F-HR Timeline Group
Bison Wealth, LLC	3,256	$3.36M	0.33%	+148	13F-HR Timeline
SCS Capital Management LLC	3,370	$3.36M	0.04%	-208	13F-HR Timeline
BURLING WEALTH PARTNERS, LLC	3,369	$3.36M	0.54%	-278	13F-HR Timeline
SEMPER AUGUSTUS INVESTMENTS GROUP LLC	3,367	$3.35M	0.4%	-80	13F-HR Timeline
Insight Advisors, LLC/ PA	3,366	$3.35M	0.64%	+117	13F-HR Timeline
CAISSE DES DEPOTS ET CONSIGNATIONS	3,365	$3.35M	0.06%	-1,615	13F-HR Timeline
MeadowBrook Investment Advisors LLC	3,363	$3.35M	2.97%	-77	13F-HR Timeline
AM INVESTMENT STRATEGIES LLC	3,359	$3.35M	0.74%	+1	13F-HR Timeline
AMERIFLEX GROUP, INC.	3,349	$3.34M	1.69%	-234	13F-HR Timeline
Prosperity Financial Group, Inc.in group Prosperity Financial Group, I…	3,344	$3.33M	1.23%	-40	13F-HR Timeline Group
CONNABLE OFFICE INC	3,341	$3.33M	0.33%	+3	13F-HR Timeline
NATURAL INVESTMENTS, LLC	3,341	$3.33M	0.82%	+21	13F-HR Timeline
Independence Bank of Kentucky	3,336	$3.32M	0.42%	-45	13F-HR Timeline
B & T Capital Management DBA Alpha Capi…	3,330	$3.32M	0.48%	+20	13F-HR Timeline
Corsicana & Co.	3,507	$3.32M	2.1%	+2	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