SEC ownership of CDW Corp

Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001402057.

Comparable stake leader

VANGUARD CAPITAL MANAGEMENT LLC

Disclosed value leader

BlackRock, Inc.

Comparable rows

2/50

Latest evidence

30 Jun 2026

Top shareholders Insider holders Latest transactions

Public ticker: CDW on Nasdaq
Parsed ownership sources: 13D/G and 13F
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
Largest SEC-reported holder: VANGUARD CAPITAL MANAGEMENT LLC
Ranking: Comparable ownership first, then disclosed value
Comparable ownership rows: 2 of 50
Meaning: Rows with safely comparable ownership %
Latest 13D/G holder: VANGUARD CAPITAL MANAGEMENT LLC
Source: Latest parsed Schedule 13D/G stake
Latest parsed ownership date: 30 Jun 2026
Freshness: Most recent filing date in this holder set
Issuer CIK: 0001402057
Issuer location: Vernon Hills, IL

Ownership snapshot

Top shareholders of CDW Corp (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.

Comparable stake leader

VANGUARD CAPITAL MANAGEME...

Disclosed value leader

BlackRock, Inc.

Comparable rows

2/50

Latest evidence

30 Jun 2026

13D/G 13F Lead comparable stake: 7.6% 48 rows are not safely comparable across share classes. 13D/G row: VANGUARD CAPITAL MANAGEMENT LLC Showing 1-8 of 50 holder rows.

Quick read

VANGUARD CAPITAL MANAGEMENT LLC leads the comparable SEC ownership view at 7.6%.

2 of 50 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.

Open SEC evidence Opens VANGUARD CAPITAL MANAGEMENT LLC's linked filing trail.

Comparable ownership Top 2

VANGUARD CAPITAL MANAGEMENT LLC 7.6%

VANGUARD PORTFOLIO MANAGEMENT LLC 6.4%

Ownership % is shown only when SEC disclosures are safely comparable across share classes.

Detailed SEC evidence table Showing 1-8 of 50 holder rows

Holder	Evidence	Ownership %	Position	12M Net Δ	As of
VANGUARD CAPITAL MANAGEMENT LLC	13D/G 13F Vanguard Capital Management · Company 13D/G 13F	7.6% Reported 13D/G · 31 Mar 2026	$1,179,692,552 9,747,914 shares	$0	31 Mar 2026
VANGUARD PORTFOLIO MANAGEMENT LLC	13F 13D/G Company · Vanguard Portfolio Management 13F 13D/G	6.4% Reported 13D/G · 31 Mar 2026	$1,152,907,229 8,197,577 shares	—	30 Jun 2026
BlackRock, Inc.	13F Company 13F	— denominator unverified	$2,143,082,036 15,238,070 shares	—	30 Jun 2026
STATE STREET CORP	13F Company 13F	— denominator unverified	$812,855,320 5,779,688 shares	—	30 Jun 2026
HARRIS ASSOCIATES L P	13F Company 13F	— denominator unverified	$779,630,901 5,543,451 shares	—	30 Jun 2026
Boston Partners	13F Company 13F	— denominator unverified	$739,288,520 5,256,810 shares	—	30 Jun 2026
GEODE CAPITAL MANAGEMENT, LLC	13F Company 13F	— denominator unverified	$547,511,417 3,890,627 shares	—	30 Jun 2026
HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC	13F Company 13F	— denominator unverified	$531,279,554 3,777,585 shares	—	30 Jun 2026

How to read this table

Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

Forms 3/4/5 flow

Insider trading overview

Net insider flow leans to selling over the last 12 months. Net value: -$2,250,286.

Buys

$2,505,138

Insiders: 2

Sells

$4,755,424

Insiders: 2

Net

-$2,250,286

Shares: -11,265

Window

Last 12 months

4 rolling buckets

Buy value Sell value

Shares: 22,830 Shares: 34,095

Window (months)	Buy shares	Sell shares	Buy value	Sell value	Net value
0-3	0	26,695	$0	$3,673,766	-$3,673,766
3-6	22,830	0	$2,505,138	$0	+$2,505,138
6-9	0	0	$0	$0	$0
9-12	0	7,400	$0	$1,081,658	-$1,081,658

Reporting owners

Insider holders from Forms 3/4/5

Showing 1-20 of 25 reporting-owner rows connected to CDW Corp. Open a relationship link for the CIK-to-CIK filing trail.

Rows

Largest Forms 3/4/5 holder

Christine A. Leahy

Net 12M change

-$2.25M

Full value: -$2,250,286 · USD · 12-month change

Latest report

15 Oct 2026

Name	Relationship	Holdings Value	Past Year Net Change	Change %	Valuation	Report Date
Christine A. Leahy	Chair, President, and Chief Executive Officer, Director	$29,777,764	+$499,398	+1.7%	Mixed	10 Sep 2026
Christina M. Corley	Chief Commercial and Operating Officer	$16,274,818			Mixed	10 Sep 2024
David W. Nelms	Director	$7,288,050	+$2,005,740	+38%	Mixed	01 Oct 2026
Albert Joseph Miralles Jr.	Chief Financial Officer and Executive Vice President, Enterprise Business Operations	$6,700,624			Mixed	10 Sep 2026
Collin B. Kebo	Senior Vice President and Chief Financial Officer	$6,602,764			Mixed	16 Aug 2021
Frederick J. Kulevich	Chief Legal Officer, Executive Vice President, Risk and Compliance, and Corporate Secretary	$6,304,150			Mixed	10 Sep 2026
Paul J. Finnegan	Director	$5,432,959			Mixed	10 Mar 2023
Elizabeth H. Connelly	Chief Commercial Officer and Executive Vice President	$4,845,517	-$3,673,766	-43%	Mixed	10 Sep 2026
Hang Tan	Chief Strategy & Transformation Officer and Executive Vice President	$4,807,003			Mixed	10 Sep 2026
Sona Chawla	Chief Growth and Innovation Officer and Executive Vice President	$4,209,924	-$1,081,658	-20%	Mixed	10 Dec 2025
James A. Bell	Director	$3,720,489			Mixed	10 Sep 2026
Katherine Elizabeth Sanderson	Chief Human Resources Officer and Executive Vice President, Coworker Success	$3,447,186			Mixed	24 Sep 2026
Donna F. Zarcone	Director	$3,098,615			Mixed	10 Mar 2026
Mukesh Kumar	Chief Services & Solutions Officer and Executive Vice President	$2,914,434			Mixed	10 Sep 2026
Joseph Swedish	Director	$2,875,178			Mixed	01 Oct 2026
Virginia C. Addicott	Director	$2,626,516			Mixed	10 Sep 2026
Lynda M. Clarizio	Director	$2,214,793			Mixed	10 Sep 2026
Anthony R. Foxx	Director	$950,431			Mixed	10 Sep 2026
Sanjay Mehrotra	Director	$862,659			Mixed	10 Mar 2026
Peter R. Locy	Senior Vice President and Chief Accounting Officer	$836,892			Mixed	10 Sep 2026

Recent insider transactions for CDW Corp

Showing up to 300 recent insider transactions from the last 12 months.

Insider	Symbol	Class	Transaction	%	SEC-reported value	SEC-reported price	Shares	Shares owned	Date	Ownership
Saranga Balaji	CDW	Common Stock, par value $0.01	Award				504	504	15 Oct 2026	Direct
David W. Nelms	CDW	Common Stock, par value $0.01	Award	0.5%			258	51,821	01 Oct 2026	Direct
Joseph Swedish	CDW	Common Stock, par value $0.01	Award	1.05%			212	20,444	01 Oct 2026	Direct
Katherine Elizabeth Sanderson	CDW	Common Stock, par value $0.01	Tax liability	-0.94%			-232	24,511	24 Sep 2026	Direct
Marc Ellis Jones	CDW	Common Stock, par value $0.01	Award	0.44%			19.93	4,533	10 Sep 2026	Direct
David W. Nelms	CDW	Common Stock, par value $0.01	Award	0.29%			148	51,563	10 Sep 2026	Direct
Mukesh Kumar	CDW	Common Stock, par value $0.01	Award	0.94%			192	20,723	10 Sep 2026	Direct
Virginia C. Addicott	CDW	Common Stock, par value $0.01	Award	0.44%			82.13	18,675	10 Sep 2026	Direct
Katherine Elizabeth Sanderson	CDW	Common Stock, par value $0.01	Award	0.99%			243	24,743	10 Sep 2026	Direct
Frederick J. Kulevich	CDW	Common Stock, par value $0.01	Award	0.41%			185	44,825	10 Sep 2026	Direct
Lynda M. Clarizio	CDW	Common Stock, par value $0.01	Award	0.05%			7.18	15,748	10 Sep 2026	Direct
Hang Tan	CDW	Common Stock, par value $0.01	Award	0.63%			213	34,179	10 Sep 2026	Direct
Anthony R. Foxx	CDW	Common Stock, par value $0.01	Award	0.44%			29.71	6,758	10 Sep 2026	Direct
Albert Joseph Miralles Jr.	CDW	Common Stock, par value $0.01	Award	0.63%			299	47,644	10 Sep 2026	Direct
Peter R. Locy	CDW	Common Stock, par value $0.01	Award	0.5%			29.45	5,951	10 Sep 2026	Direct
Christine A. Leahy	CDW	Common Stock, par value $0.01	Award	0.43%			825	194,480	10 Sep 2026	Direct
Joseph Swedish	CDW	Common Stock, par value $0.01	Award	0.14%			29.13	20,232	10 Sep 2026	Direct
Kelly J. Grier	CDW	Common Stock, par value $0.01	Award	0.18%			7.18	4,069	10 Sep 2026	Direct
Elizabeth H. Connelly	CDW	Common Stock, par value $0.01	Award	0.7%			238	34,453	10 Sep 2026	Direct
James A. Bell	CDW	Common Stock, par value $0.01	Award	0.36%			95.7	26,454	10 Sep 2026	Direct
Mukesh Kumar	CDW	Common Stock, par value $0.01	Tax liability	-5.29%			-1,147	20,530	17 Aug 2026	Direct
Elizabeth H. Connelly	CDW	Common Stock, par value $0.01	Sale	-43.8%	-$3,673,766	$137.62	-26,695	34,215	07 Aug 2026	Direct
Elizabeth H. Connelly	CDW	Common Stock, par value $0.01	Options Exercise	78%			26,695	60,910	07 Aug 2026	Direct
Elizabeth H. Connelly	CDW	Employee Stock Option (Right to Buy)	Options Exercise	-100%			-26,695	0	07 Aug 2026	Direct
David W. Nelms	CDW	Common Stock, par value $0.01	Award	0.45%			229	51,415	01 Jul 2026	Direct
Joseph Swedish	CDW	Common Stock, par value $0.01	Award	1.04%			208	20,202	01 Jul 2026	Direct
Marc Ellis Jones	CDW	Common Stock, par value $0.01	Award	0.49%			21.88	4,513	10 Jun 2026	Direct
Hang Tan	CDW	Common Stock, par value $0.01	Award	0.49%			165	33,967	10 Jun 2026	Direct
Lynda M. Clarizio	CDW	Common Stock, par value $0.01	Award	0.05%			7.88	15,741	10 Jun 2026	Direct
Christine A. Leahy	CDW	Common Stock, par value $0.01	Award	0.15%			298	193,655	10 Jun 2026	Direct
Mukesh Kumar	CDW	Common Stock, par value $0.01	Award	0.49%			105	21,678	10 Jun 2026	Direct
Peter R. Locy	CDW	Common Stock, par value $0.01	Award	0.31%			18.56	5,921	10 Jun 2026	Direct
Virginia C. Addicott	CDW	Common Stock, par value $0.01	Award	0.49%			90.14	18,593	10 Jun 2026	Direct
Frederick J. Kulevich	CDW	Common Stock, par value $0.01	Award	0.15%			65.3	44,640	10 Jun 2026	Direct
Albert Joseph Miralles Jr.	CDW	Common Stock, par value $0.01	Award	0.23%			108	47,344	10 Jun 2026	Direct
James A. Bell	CDW	Common Stock, par value $0.01	Award	0.4%			105	26,358	10 Jun 2026	Direct
Joseph Swedish	CDW	Common Stock, par value $0.01	Award	0.16%			30.95	19,994	10 Jun 2026	Direct
Kelly J. Grier	CDW	Common Stock, par value $0.01	Award	0.19%			7.88	4,062	10 Jun 2026	Direct
David W. Nelms	CDW	Common Stock, par value $0.01	Award	0.32%			161	51,186	10 Jun 2026	Direct
Katherine Elizabeth Sanderson	CDW	Common Stock, par value $0.01	Award	0.27%			65.26	24,499	10 Jun 2026	Direct
Elizabeth H. Connelly	CDW	Common Stock, par value $0.01	Award	0.26%			88.41	34,215	10 Jun 2026	Direct
Anthony R. Foxx	CDW	Common Stock, par value $0.01	Award	0.49%			32.61	6,728	10 Jun 2026	Direct
David W. Nelms	CDW	Common Stock, par value $0.01	Purchase	54.5%	$2,005,740	$111.43	18,000	51,025	27 May 2026	Direct
Christine A. Leahy	CDW	Common Stock, par value $0.01	Purchase	2.56%	$499,398	$103.40	4,830	193,357	18 May 2026	Direct
Hang Tan	CDW	Common Stock, par value $0.01	Award				33,802	33,802	11 May 2026	Direct
Peter R. Locy	CDW	Common Stock, par value $0.01	Award	49.3%			1,950	5,903	11 May 2026	Direct
David W. Nelms	CDW	Common Stock, par value $0.01	Award	0.72%			236	33,025	01 Apr 2026	Direct
Joseph Swedish	CDW	Common Stock, par value $0.01	Award	1.2%			236	19,963	01 Apr 2026	Direct
Katherine Elizabeth Sanderson	CDW	Common Stock, par value $0.01	Tax liability	-0.03%			-8.22	24,434	19 Mar 2026	Direct
Katherine Elizabeth Sanderson	CDW	Common Stock, par value $0.01	Tax liability	-8.28%			-2,205	24,436	16 Mar 2026	Direct

^* marks a reported price that did not pass the local price check.