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
Flywheel Private Wealth LLC	253	$252K	0.14%	0	13F-HR Timeline
Carroll Advisory Group, LLC	253	$252K	0.1%	-30	13F-HR Timeline
HT Partners LLC	252	$251K	0.08%	new	13F-HR Timeline
One Wealth Advisors, LLC	252	$251K	0.03%	0	13F-HR Timeline
Schiavi & Co LLC	252	$251K	0.07%	+2	13F-HR Timeline
49 WEALTH MANAGEMENT, LLC	252	$251K	0.02%	new	13F-HR Timeline
WPG Advisers, LLC	251	$250K	0.18%	+4	13F-HR Timeline
Chatterton & Associates Inc.	242	$250K	0.18%	0	13F-HR Timeline
J HAGAN CAPITAL, INC.	250	$249K	0.13%	new	13F-HR Timeline
LIBRA WEALTH LLC	250	$249K	0.07%	-57	13F-HR Timeline
F&V Capital Management, LLC	250	$249K	0.05%	0	13F-HR Timeline
HILL ISLAND FINANCIAL LLC	249	$248K	0.06%	-1	13F-HR Timeline
BYRNE FINANCIAL FREEDOM, LLC	249	$248K	0.12%	-130	13F-HR Timeline
Holcombe Financial, Inc.	249	$248K	0.15%	-1	13F-HR Timeline
Sather Financial Group Inc	248	$247K	0.02%	new	13F-HR Timeline
LEGACY FINANCIAL GROUP, INC.	247	$246K	0.07%	-3	13F-HR Timeline
AWM CAPITAL, LLC	246	$246K	0.02%	-15	13F-HR Timeline
DROMS STRAUSS ADVISORS INC /MO/ /ADV	246	$245K	0.06%	-80	13F-HR Timeline
FSA Advisors, Inc.	246	$245K	0.16%	-18,954	13F-HR Timeline
Wiser Wealth Management, Inc	246	$245K	0.05%	new	13F-HR Timeline
Resolute Advisors LLC	245	$244K	0.1%	new	13F-HR Timeline
AJ Advisors, LLC	245	$244K	0.09%	new	13F-HR Timeline
Cadia Private Client LLC	244	$243K	0.2%	0	13F-HR Timeline
Bey-Douglas LLC	244	$243K	0.21%	new	13F-HR Timeline
Hardy Reed LLC	243	$242K	0.02%	new	13F-HR Timeline
GRANVILLE CAPITAL, INC.	242	$241K	0.13%	-30	13F-HR Timeline
East Coast Asset Management, LLC.	242	$241K	0.08%	0	13F-HR Timeline
First PREMIER Bank	242	$241K	0.06%	0	13F-HR Timeline
tru Independence LLC	242	$241K	0.12%	new	13F-HR Timeline
FWG Holdings, LLC	236	$240K	0.09%	+1	13F-HR Timeline
Legacy Wealth Asset Management, LLC	241	$240K	0.06%	new	13F-HR Timeline
LEGACY FINANCIAL INDEPENDENT ADVISORS L…	241	$240K	0.12%		13F-HR Timeline
PALLADIEM, LLC	232	$240K	0.23%	+10	13F-HR Timeline
IVC Wealth Advisors LLC	240	$239K	0.1%	+5	13F-HR Timeline
Genesis Wealth Advisors, LLC	240	$239K	0.16%	0	13F-HR Timeline
WITTENBERG INVESTMENT MANAGEMENT, INC.	240	$239K	0.09%	0	13F-HR Timeline
Mystic Asset Management, Inc.	239	$238K	0.06%	-5	13F-HR Timeline
Lynch Investment Planning, LLC	239	$238K	0.21%	-15	13F-HR Timeline
Arcadia Wealth Management, Inc.	238	$237K	0.13%	new	13F-HR Timeline
SELDON CAPITAL LP	238	$237K	0.09%	0	13F-HR Timeline
Serenity Investment Advisors	230	$237K	0.11%	new	13F-HR Timeline
ANDERSON HOAGLAND & CO	237	$236K	0.02%	0	13F-HR Timeline
Meriwether Wealth & Planning, LLC	237	$236K	0.13%	+2	13F-HR Timeline
McGowan Group Asset Management, Inc.	237	$236K	0.03%	0	13F-HR Timeline
NOESIS CAPITAL MANGEMENT CORP	237	$236K	0.03%	0	13F-HR Timeline
COREPATH WEALTH PARTNERS LLC	229	$235K	0.16%	+1	13F-HR Timeline
Newport Capital Group, LLC	236	$235K	0.14%	new	13F-HR Timeline
ProVise Management Group, LLC	236	$235K	0.02%	-97	13F-HR Timeline
Caerus Investment Advisors, LLC	236	$235K	0.1%	new	13F-HR Timeline
Pacific Park Financial, Inc.	236	$235K	0.15%	-3	13F-HR Timeline
Beaird Harris Wealth Management, LLC	236	$235K	0.02%	-301	13F-HR Timeline
SURIENCE PRIVATE WEALTH LLC	235	$234K	0.25%	0	13F-HR Timeline
CRUX WEALTH ADVISORS	235	$234K	0.09%	+1	13F-HR Timeline
Providence First Trust Co	234	$233K	0.08%	-10	13F-HR Timeline
Prospect Financial Group LLC	234	$233K	0.22%	0	13F-HR Timeline
Intelligence Driven Advisers, LLC	234	$233K	0.04%	new	13F-HR Timeline
REDW Wealth LLC	233	$233K	0.09%	new	13F-HR Timeline
Dupree Financial Group, LLC	233	$233K	0.09%	-47	13F-HR Timeline
Van Diest Capital, LLC	233	$232K	0.18%	-119	13F-HR Timeline
ONE WEALTH CAPITAL MANAGEMENT, LLC	233	$232K	0.1%	-2	13F-HR Timeline
Landing Point Financial Group, LLC	232	$231K	0.11%	0	13F-HR Timeline
Sterling Group Wealth Management, LLC	232	$231K	0.11%	new	13F-HR Timeline
Haven Private, LLC	232	$231K	0.1%	0	13F-HR Timeline
Ball & Co Wealth Management Inc.	232	$231K	0.19%	0	13F-HR Timeline
Oxinas Partners, LLC	232	$231K	0.11%	new	13F-HR Timeline
Ballast Rock Private Wealth LLC	231	$231K	0.13%	new	13F-HR Timeline
Birchwood Financial Partners, Inc.	231	$230K	0.22%	0	13F-HR Timeline
CONSCIOUS WEALTH INVESTMENTS, LLC	234	$230K	0.13%	+4	13F-HR Timeline
ACT Advisors, LLC.	231	$230K	0.1%	new	13F-HR Timeline
AMARILLO NATIONAL BANK	231	$230K	0.04%	new	13F-HR Timeline
Aurora Private Wealth, Inc.	262	$230K	0.16%	0	13F-HR Timeline
Goepper Burkhardt LLC	231	$230K	0.08%	new	13F-HR Timeline
FORTRESS FINANCIAL GROUP, LLC	230	$229K	0.17%	new	13F-HR Timeline
Oliver Luxxe Assets LLC	230	$229K	0.03%	new	13F-HR Timeline
Global Trust Wealth Management LLC	230	$229K	0.17%	-159	13F-HR Timeline
OAK ASSOCIATES LTD /OH/	230	$229K	0.02%	new	13F-HR Timeline
EARNEST PARTNERS LLC	230	$229K	<0.01%	new	13F-HR Timeline
Cascade Investment Advisors, Inc.	230	$229K	0.14%	new	13F-HR Timeline
Park Capital Management, LLC / WI	230	$229K	0.22%	new	13F-HR Timeline
TABLEAUX LLC	230	$229K	0.11%	new	13F-HR Timeline
Causey Wealth LLC	229	$229K	0.1%	-15	13F-HR Timeline
CHEMUNG CANAL TRUST CO	229	$228K	0.05%	-4	13F-HR Timeline
Martel Wealth Advisors LLC	228	$227K	0.04%	new	13F-HR Timeline
INSTRUMENTAL WEALTH, LLC	228	$227K	0.14%	+10	13F-HR Timeline
Cornerstone Planning Group LLC	223	$226K	0.03%	+34	13F-HR Timeline
Opes Wealth Management LLC	227	$226K	0.04%	new	13F-HR Timeline
Intergy Private Wealth, LLC	227	$226K	0.07%	new	13F-HR Timeline
Pembroke Management, LTD	227	$226K	0.03%	-6	13F-HR Timeline
Leslie Global Wealth, LLC	227	$226K	0.12%	new	13F-HR Timeline
Cornerstone National Bank & Trust Co	226	$225K	0.08%	-439	13F-HR Timeline
Strategic Wealth Advisors LLC	226	$225K	0.18%	0	13F-HR Timeline
Stillwater Private Wealth, LLC	226	$225K	0.19%		13F-HR Timeline
SECURITY NATIONAL BANK OF SIOUX CITY IO…	225	$224K	0.13%	new	13F-HR Timeline
WEDGE CAPITAL MANAGEMENT L L P/NC	225	$224K	<0.01%	new	13F-HR Timeline
Powerhouse Assets LLC	225	$224K	0.2%	new	13F-HR Timeline
Financial Futures Ltd Liability Co.	225	$224K	0.1%	new	13F-HR Timeline
Midwestern Financial, LLC /IA	224	$223K	0.18%	new	13F-HR Timeline
Three Cord True Wealth Management, LLC	224	$223K	0.12%	new	13F-HR Timeline
Dakota Community Bank & Trust NA	224	$223K	0.76%	-16	13F-HR Timeline
Provenance Wealth Advisors, LLC	224	$223K	0.02%	0	13F-HR Timeline
Henderson Brothers Financial Partners, …	224	$223K	0.06%		13F-HR Timeline
Camelot Portfolios, LLC	223	$223K	0.17%	0	13F-HR Timeline
Alesco Advisors, LLC, An ESL Co	223	$222K	0.01%	new	13F-HR Timeline
Greystone Financial Group, LLC	223	$222K	0.06%	-696	13F-HR Timeline
Exit Wealth Advisors, LLC.	223	$222K	0.11%	new	13F-HR Timeline
Keeler Thomas Management LLC	222	$221K	0.09%	-122	13F-HR Timeline
G&S Capital LLC	222	$221K	0.08%	new	13F-HR Timeline
Paragon Capital Management Ltd	221	$221K	0.05%	new	13F-HR Timeline
3 FACTOR INDEXING, LLC	221	$220K	0.21%		13F-HR Timeline
Aspire Private Capital, LLC	220	$220K	0.05%	new	13F-HR Timeline
Redwood Financial Network Corp	220	$219K	0.14%	new	13F-HR Timeline
DeLarme Wealth Management, Inc.	220	$219K	0.14%	-23	13F-HR Timeline
Westwood Wealth Management	220	$219K	0.09%	new	13F-HR Timeline
JDM Financial Group LLC	220	$219K	0.08%	0	13F-HR Timeline
Precision Wealth Strategies, LLC	219	$218K	0.07%	-127	13F-HR Timeline
OFS Enterprise LLC	219	$218K	0.06%		13F-HR Timeline
Freedom Financial Partners LLC	218	$217K	0.08%	new	13F-HR Timeline
Edge Wealth Management LLC	218	$217K	0.04%	new	13F-HR Timeline
PROATHLETE WEALTH MANAGEMENT LLC	217	$217K	0.06%	0	13F-HR Timeline
Zuckerman Investment Group, LLC	218	$217K	0.02%	new	13F-HR Timeline
Brookmont Capital Management	217	$216K	0.12%	new	13F-HR Timeline
ISTHMUS PARTNERS, LLC	216	$215K	0.02%	-65	13F-HR Timeline
Grove Street Fiduciary, LLC	216	$215K	0.09%	new	13F-HR Timeline
Financially in Tune, LLC	216	$215K	0.19%	new	13F-HR Timeline
Opus Capital Group, LLC	216	$215K	0.02%	new	13F-HR Timeline
Valued Wealth Advisors LLC	215	$214K	0.09%	+18	13F-HR Timeline
POM Investment Strategies, LLC	215	$214K	0.27%	+4	13F-HR Timeline
Manitou Investment Management Ltd.	215	$214K	0.04%	0	13F-HR Timeline
17 CAPITAL PARTNERS, LLC	215	$214K	0.11%	new	13F-HR Timeline
Astra Wealth Partners LLC	215	$214K	0.14%	new	13F-HR Timeline
GenWealth Group, Inc.	214	$213K	0.04%	-12	13F-HR Timeline
Tenzing Financial LLC	217	$213K	0.16%	new	13F-HR Timeline
M Wealth Management, LLC	214	$213K	0.18%	new	13F-HR Timeline
Measured Risk Portfolios, Inc.	213	$212K	0.23%	new	13F-HR Timeline
Ferguson Shapiro LLC	213	$212K	0.06%	new	13F-HR Timeline
Wallace Advisory Group, LLC	213	$212K	0.23%	new	13F-HR Timeline
Adams Wealth Management	213	$212K	0.05%	new	13F-HR Timeline
ONE PLUS ONE WEALTH MANAGEMENT, LLC	213	$212K	0.09%	new	13F-HR Timeline
CacheTech Inc.	213	$212K	0.04%	new	13F-HR Timeline
Millington Financial Advisors, LLC	212	$212K	0.09%	0	13F-HR Timeline
Insight Wealth Strategies, LLC	212	$212K	0.02%	new	13F-HR Timeline
Stone House Investment Management, LLC	212	$211K	0.04%	+1	13F-HR Timeline
SHUFRO ROSE & CO LLC	212	$211K	0.01%	-23	13F-HR Timeline
VILLERE ST DENIS J & CO LLC	212	$211K	0.02%	new	13F-HR Timeline
Avant Capital LLC	212	$211K	0.15%	new	13F-HR Timeline
Outlook Wealth Advisors, LLC	211	$210K	0.05%	new	13F-HR Timeline
SHARPEPOINT LLC	211	$210K	0.13%	new	13F-HR Timeline
Fenimore Asset Management Inc	210	$209K	<0.01%	new	13F-HR Timeline
CONFLUENCE INVESTMENT MANAGEMENT LLC	210	$209K	<0.01%	new	13F-HR Timeline
Client First Capital LLC	210	$209K	0.09%	new	13F-HR Timeline
COERENTE CAPITAL MANAGEMENT	210	$209K	0.04%	new	13F-HR Timeline
South Dakota Investment Council	210	$209K	<0.01%	0	13F-HR Timeline
Steelhead Wealth Management LLC	210	$209K	0.11%		13F-HR Timeline
Probity Advisors, Inc.	209	$208K	0.03%	new	13F-HR Timeline
Rialto Wealth Management, LLC	209	$208K	0.05%	+9	13F-HR Timeline
SAM Advisors, LLC	209	$208K	0.07%	new	13F-HR Timeline
Hobart Private Capital, LLC	208	$207K	0.04%	new	13F-HR Timeline
HORIZON KINETICS ASSET MANAGEMENT LLC	208	$207K	<0.01%	new	13F-HR Timeline
Grantham, Mayo, Van Otterloo & Co. LLC	208	$207K	<0.01%	-1,300	13F-HR Timeline
Astoria Strategic Wealth, Inc.	208	$207K	0.05%	new	13F-HR Timeline
New Perspectives, Inc	208	$207K	0.07%	new	13F-HR Timeline
Tillman Hartley LLC	208	$207K	0.05%	-163	13F-HR Timeline
Vantage Point Financial LLC	207	$206K	0.07%	new	13F-HR Timeline
Wealth Advisory Solutions, LLC	207	$206K	0.05%	new	13F-HR Timeline
TOTAL INVESTMENT MANAGEMENT INC	206	$205K	0.02%	new	13F-HR Timeline
AMI INVESTMENT MANAGEMENT INC	206	$205K	0.05%	new	13F-HR Timeline
Boulder Wealth Advisors, LLC	206	$205K	0.08%	new	13F-HR Timeline
True Wealth Design, LLC	206	$205K	0.06%	+145	13F-HR Timeline
Randall & Associates Wealth Management	206	$205K	0.14%	new	13F-HR Timeline
Transcendent Capital Group LLC	206	$205K	0.09%	new	13F-HR Timeline
KEYNOTE FINANCIAL SERVICES LLC	206	$205K	0.11%	new	13F-HR Timeline
Ballew Advisors, Inc	198	$205K	0.12%	new	13F-HR Timeline
Acumen Wealth Advisors, LLC	205	$204K	0.05%	+5	13F-HR Timeline
Financially Speaking Inc	205	$204K	0.99%	0	13F-HR Timeline
Coyle Financial Counsel LLC	205	$204K	0.04%	new	13F-HR Timeline
Bellwether Advisors, LLC	205	$204K	0.03%	new	13F-HR Timeline
Strategic Equity Management	205	$204K	0.08%	new	13F-HR Timeline
One Wealth Management Investment & Advi…	205	$204K	0.25%	new	13F-HR Timeline
Todd Wealth Management, LLC	205	$204K	0.19%	new	13F-HR Timeline
A&I FINANCIAL SERVICES, LLC	204	$203K	0.1%	-131	13F-HR Timeline
BLVD Private Wealth, LLC	204	$203K	0.18%	new	13F-HR Timeline
SCHOLTZ & COMPANY, LLC	203	$202K	0.1%	new	13F-HR Timeline
21 West Wealth Management LLC	203	$202K	0.19%	new	13F-HR Timeline
Merited Wealth, LLC	203	$202K	0.17%	0	13F-HR Timeline
SARD WEALTH MANAGEMENT GROUP, LLC	203	$202K	0.11%	new	13F-HR Timeline
POTENTIA WEALTH	203	$202K	0.08%	-96	13F-HR Timeline
WPWealth LLP	203	$202K	0.03%	new	13F-HR Timeline
Pacific Asset Management, LLC	202	$201K	0.11%	new	13F-HR Timeline
Ninety One UK Ltd	202	$201K	<0.01%	new	13F-HR Timeline
Peak Retirement Planning, Inc.	202	$201K	0.04%	new	13F-HR Timeline
Avion Wealth	202	$201K	0.04%	+20	13F-HR Timeline
Kohmann Bosshard Financial Services, LLC	201	$201K	0.02%	-6	13F-HR/A Timeline
COLTON GROOME FINANCIAL ADVISORS, LLC	201	$201K	0.06%	new	13F-HR Timeline
Financial Network Wealth Advisors LLC	201	$201K	0.21%	+2	13F-HR Timeline
Alternative Investment Advisors, LLC.	200	$201K	0.09%	new	13F-HR Timeline
Noble Wealth Management PBC	201	$200K	0.1%	+22	13F-HR Timeline
HMS Capital Management, LLC	201	$200K	0.08%	new	13F-HR Timeline
Boreal Capital Management LLC	200	$199K	0.17%	-167	13F-HR Timeline
Ravenstone Capital Management Inc.	200	$199K	0.1%	-16	13F-HR Timeline
Piscataqua Savings Bank	199	$198K	0.14%	0	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