Comparable stake leader
DODGE & COX
SEC ownership of TransUnion
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001552033.
Disclosed value leader
DODGE & COX
Comparable rows
50/50
Latest evidence
01 Sep 2026
- Public ticker
- TRU on NYSE
- Parsed ownership sources
-
13F, 13D/G, and 3/4/5
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
- Largest SEC-reported holder
-
DODGE & COX
Ranking: Comparable ownership first, then disclosed value
- Comparable ownership rows
-
50 of 50
Meaning: Rows with safely comparable ownership %
- Latest 13D/G holder
-
DODGE & COX
Source: Latest parsed Schedule 13D/G stake
- Latest parsed ownership date
-
01 Sep 2026
Freshness: Most recent filing date in this holder set
- Issuer CIK
- 0001552033
- Issuer location
- Chicago, IL
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
3 signals
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
Ownership snapshot
Top shareholders of TransUnion (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
DODGE & COX
Disclosed value leader
DODGE & COX
Comparable rows
50/50
Latest evidence
01 Sep 2026
13F
13D/G
3/4/5
Lead comparable stake: 12%
13D/G row: DODGE & COX
Showing 1-8 of 50 holder rows.
Quick read
DODGE & COX leads the comparable SEC ownership view at 12%.
50 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 DODGE & COX's linked filing trail.
Comparable ownership
Top 5
DODGE & COX
12%
BlackRock, Inc.
9.6%
Independent Franchise Partners LLP
6.3%
FMR LLC
6%
MASSACHUSETTS FINANCIAL SERVICES ...
5.6%
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 |
|---|---|---|---|---|---|
| DODGE & COX |
13F
13D/G
Company
|
12%
from 13D/G
|
$1,745,514,662
24,196,211 shares
|
— | 30 Jun 2026 |
| BlackRock, Inc. |
13D/G
13F
Company
|
9.6%
|
$1,560,844,356
18,630,274 shares
|
+$669,093,136 | 30 Sep 2025 |
| Independent Franchise Partners LLP |
13F
13D/G
Company
|
6.3%
from 13D/G
|
$1,008,275,675
13,976,652 shares
|
— | 30 Jun 2026 |
| FMR LLC |
13F
13D/G
Company
|
6%
from 13D/G
|
$845,179,378
11,715,822 shares
|
— | 30 Jun 2026 |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ |
13F
13D/G
Company · Massachusetts Financial Services Company
|
5.6%
from 13D/G
|
$1,484,954,312
10,667,983 shares
|
— | 30 Jun 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC |
13D/G
13F
Vanguard Capital Management · Company
|
5.4%
|
$714,921,174
10,332,724 shares
|
$0 | 31 Mar 2026 |
| WELLINGTON MANAGEMENT GROUP LLP |
13D/G
13F
Company
|
3.4%
|
$476,373,893
6,603,464 shares
|
-$308,371,664 | 30 Jun 2026 |
| Christopher A. Cartwright |
3/4/5
President and CEO, Director
|
0.28%
|
$39,059,120
541,435 shares
|
— | 28 Aug 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: -$7,991,843.
Buys
$0
Insiders: 0
Sells
$7,991,843
Insiders: 7
Net
-$7,991,843
Shares: -101,227
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 0
Shares: 101,227
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 0 | 49,160 | $0 | $3,969,871 | -$3,969,871 |
| 3-6 | 0 | 29,733 | $0 | $2,158,206 | -$2,158,206 |
| 6-9 | 0 | 13,997 | $0 | $1,135,683 | -$1,135,683 |
| 9-12 | 0 | 8,337 | $0 | $728,083 | -$728,083 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-20 of 34 reporting-owner rows connected to TransUnion. Open a relationship link for the CIK-to-CIK filing trail.
Rows
34
Largest Forms 3/4/5 holder
Christopher A. Cartwright
Net 12M change
-$7,991,843
Latest report
01 Sep 2026
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Christopher A. Cartwright | President and CEO, Director | $39,059,120 | Median | 28 Aug 2026 | ||
| Venkat Achanta | EVP, Chief Tech, Data & Analy. | $15,885,155 | Median | 01 Sep 2026 | ||
| Todd M. Cello | Evp & Cfo | $10,229,596 | Median | 28 Aug 2026 | ||
| Steven M. Chaouki | President, US Markets | $6,744,144 | -$2,670,690 | -28% | Filing P/S | 01 Sep 2026 |
| Todd C. Skinner | President, International | $4,707,620 | -$535,422 | -10% | Filing P/S | 01 Sep 2026 |
| Timothy J. Martin | EVP - Global Solutions | $4,299,926 | Filing P/S | 06 Mar 2025 | ||
| Abhi Dhar | Former EVP, Chief Info & Tech | $4,210,001 | Mixed | 29 Jun 2023 | ||
| Mohamed Abdelsadek | EVP, Chief Global Solutions | $3,944,687 | -$1,997,075 | -34% | Median | 28 Aug 2026 |
| Tiffani Chambers | EVP, Chief Operations Officer | $3,726,031 | -$371,348 | -9.1% | Median | 28 Aug 2026 |
| David M. Neenan | President, International | $3,416,292 | Mixed | 30 Jul 2021 | ||
| JOSEPH PAMELA A | Director | $2,957,388 | Mixed | 12 May 2026 | ||
| Alicia Brooke Zuiker | Evp, Chro | $2,950,237 | -$680,744 | -19% | Median | 28 Aug 2026 |
| Heather J. Russell | EVP, Chief Legal Officer | $2,914,383 | -$1,433,994 | -33% | Median | 28 Aug 2026 |
| Susan W. Muigai | Evp, Chro | $2,812,164 | Mixed | 25 Feb 2025 | ||
| Siddharth N. Mehta | Director | $2,538,793 | Mixed | 13 Dec 2021 | ||
| George M. Awad | Director | $2,250,266 | Mixed | 12 May 2026 | ||
| Thomas L. Monahan | Director | $1,875,810 | Mixed | 12 May 2026 | ||
| Suzanne Patricia Clark | Director | $1,770,433 | Mixed | 12 May 2026 | ||
| Richard Dane Mauldin | EVP - Operations | $1,720,767 | Filing P/S | 14 Mar 2024 | ||
| David E. Wojczynski | Former President, Healthcare | $1,657,849 | Mixed | 17 Dec 2021 |
Recent insider transactions for TransUnion
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 |
|---|---|---|---|---|---|---|---|---|---|---|
| Clayton F. Ruebensaal | TRU | Common Stock | Award | 5,976 | 5,976 | 01 Sep 2026 | Direct | |||
| Venkat Achanta | TRU | Common Stock | Award | 48.3% | 71,710 | 220,199 | 01 Sep 2026 | Direct | ||
| Todd C. Skinner | TRU | Common Stock | Sale | -1.76% | $84,420 | $84.42 | -1,000 | 55,764 | 01 Sep 2026 | Direct |
| Steven M. Chaouki | TRU | Common Stock | Sale | -1.24% | $84,420 | $84.42 | -1,000 | 79,888 | 01 Sep 2026 | Direct |
| Jennifer A. Williams | TRU | Common Stock | Sale | -19.8% | $90,490 | $84.57 | -1,070 | 4,327 | 31 Aug 2026 | Direct |
| Jennifer A. Williams | TRU | Common Stock | Tax liability | -7.63% | -446 | 5,397 | 28 Aug 2026 | Direct | ||
| Alicia Brooke Zuiker | TRU | Common Stock | Tax liability | -2.36% | -987 | 40,896 | 28 Aug 2026 | Direct | ||
| Todd C. Skinner | TRU | Common Stock | Tax liability | -11.1% | -7,085 | 56,764 | 28 Aug 2026 | Direct | ||
| Heather J. Russell | TRU | Common Stock | Tax liability | -10.7% | -4,849 | 40,399 | 28 Aug 2026 | Direct | ||
| Steven M. Chaouki | TRU | Common Stock | Tax liability | -9.02% | -8,018 | 80,888 | 28 Aug 2026 | Direct | ||
| Tiffani Chambers | TRU | Common Stock | Tax liability | -3.16% | -1,686 | 51,650 | 28 Aug 2026 | Direct | ||
| Venkat Achanta | TRU | Common Stock | Tax liability | -5.26% | -8,252 | 148,489 | 28 Aug 2026 | Direct | ||
| Mohamed Abdelsadek | TRU | Common Stock | Tax liability | -4.37% | -2,501 | 54,681 | 28 Aug 2026 | Direct | ||
| Todd M. Cello | TRU | Common Stock | Tax liability | -5.27% | -7,896 | 141,802 | 28 Aug 2026 | Direct | ||
| Christopher A. Cartwright | TRU | Common Stock | Tax liability | -5.18% | -29,262 | 535,744 | 28 Aug 2026 | Direct | ||
| Alicia Brooke Zuiker | TRU | Common Stock | Sale | -17.2% | $680,744 | $78.49 | -8,673 | 41,883 | 11 Aug 2026 | Direct |
| Todd C. Skinner | TRU | Common Stock | Sale | -1.47% | $75,962 | $79.96 | -950 | 63,849 | 03 Aug 2026 | Direct |
| Steven M. Chaouki | TRU | Common Stock | Sale | -1.11% | $79,960 | $79.96 | -1,000 | 88,906 | 03 Aug 2026 | Direct |
| Mohamed Abdelsadek | TRU | Common Stock | Sale | -29.1% | $1,997,075 | $85.00 | -23,495 | 57,182 | 28 Jul 2026 | Direct |
| Jennifer A. Williams | TRU | Common Stock | Sale | -14.3% | $77,760 | $80.00 | -972 | 5,843 | 07 Jul 2026 | Direct |
| Alicia Brooke Zuiker | TRU | Common Stock | Tax liability | -12% | -6,899 | 50,556 | 01 Jul 2026 | Direct | ||
| Todd C. Skinner | TRU | Common Stock | Sale | -1.52% | $72,640 | $72.64 | -1,000 | 64,634 | 01 Jul 2026 | Direct |
| Steven M. Chaouki | TRU | Common Stock | Sale | -10% | $726,400 | $72.64 | -10,000 | 89,906 | 01 Jul 2026 | Direct |
| Jennifer A. Williams | TRU | Common Stock | Tax liability | -5.6% | -404 | 6,815 | 01 Jun 2026 | Direct | ||
| Todd C. Skinner | TRU | Common Stock | Sale | -1.5% | $70,730 | $70.73 | -1,000 | 65,634 | 01 Jun 2026 | Direct |
| Steven M. Chaouki | TRU | Common Stock | Sale | -4.77% | $353,650 | $70.73 | -5,000 | 99,906 | 01 Jun 2026 | Direct |
| Heather J. Russell | TRU | Common Stock | Sale | -12.9% | $480,307 | $71.87 | -6,683 | 45,248 | 29 May 2026 | Direct |
| Todd C. Skinner | TRU | Common Stock | Tax liability | -16.7% | -13,350 | 66,634 | 18 May 2026 | Direct | ||
| Heather J. Russell | TRU | Common Stock | Tax liability | -16.4% | -10,222 | 51,931 | 18 May 2026 | Direct | ||
| Steven M. Chaouki | TRU | Common Stock | Tax liability | -13.3% | -16,063 | 104,906 | 18 May 2026 | Direct | ||
| Venkat Achanta | TRU | Common Stock | Tax liability | -9.37% | -16,213 | 156,741 | 18 May 2026 | Direct | ||
| Todd M. Cello | TRU | Common Stock | Tax liability | -10.9% | -18,253 | 149,698 | 18 May 2026 | Direct | ||
| Christopher A. Cartwright | TRU | Common Stock | Tax liability | -4.45% | -26,284 | 565,006 | 18 May 2026 | Direct | ||
| Todd C. Skinner | TRU | Common Stock | Award | 44.7% | 24,721 | 79,984 | 12 May 2026 | Direct | ||
| Heather J. Russell | TRU | Common Stock | Award | 59% | 23,073 | 62,153 | 12 May 2026 | Direct | ||
| Steven M. Chaouki | TRU | Common Stock | Award | 42.8% | 36,258 | 120,969 | 12 May 2026 | Direct | ||
| Venkat Achanta | TRU | Common Stock | Award | 31.3% | 41,202 | 172,954 | 12 May 2026 | Direct | ||
| Todd M. Cello | TRU | Common Stock | Award | 32.5% | 41,202 | 167,951 | 12 May 2026 | Direct | ||
| Christopher A. Cartwright | TRU | Common Stock | Award | 11.2% | 59,331 | 591,290 | 12 May 2026 | Direct | ||
| Linda Zukauckas | TRU | Common Stock | Award | 23.7% | 3,034 | 15,821 | 12 May 2026 | Direct | ||
| Charlotte Yarkoni | TRU | Common Stock | Award | 362.9% | 3,034 | 3,870 | 12 May 2026 | Direct | ||
| Ravi Kumar Singisetti | TRU | Common Stock | Award | 30.3% | 3,034 | 13,062 | 12 May 2026 | Direct | ||
| Thomas L. Monahan | TRU | Common Stock | Award | 12.6% | 3,034 | 27,111 | 12 May 2026 | Direct | ||
| Charles E. Gottdiener | TRU | Common Stock | Award | 30.1% | 3,034 | 13,123 | 12 May 2026 | Direct | ||
| Russell P. Fradin | TRU | Common Stock | Award | 16.4% | 3,034 | 21,585 | 12 May 2026 | Direct | ||
| Hamidou Dia | TRU | Common Stock | Award | 30.3% | 3,034 | 13,062 | 12 May 2026 | Direct | ||
| Suzanne Patricia Clark | TRU | Common Stock | Award | 13.4% | 3,034 | 25,588 | 12 May 2026 | Direct | ||
| Sayan Chakraborty | TRU | Common Stock | Award | 362.9% | 3,034 | 3,870 | 12 May 2026 | Direct | ||
| George M. Awad | TRU | Common Stock | Award | 10.3% | 3,034 | 32,523 | 12 May 2026 | Direct | ||
| Joseph Pamela A | TRU | Common Stock | Award | 7.64% | 3,034 | 42,743 | 12 May 2026 | Direct |
* marks a reported price that did not pass the local price check.