Dodge & Cox reports 8.4% stake in TransUnion (TRU) via Schedule 13G/A

Rhea-AI Filing Summary

TransUnion ownership disclosure: Dodge & Cox amended its Schedule 13G to report beneficial ownership of 16,189,511 shares of TransUnion common stock, representing 8.4% of the class, with the amendment signed on 05/14/2026.

The filing states Dodge & Cox has sole voting power over 15,221,968 shares and sole dispositive power over 16,189,511 shares. It also notes Dodge & Cox Stock Fund holds 10,063,200 shares ( 5.2% ).

Insights

Institutional Ownership Analyst

Dodge & Cox reports an 8.4% stake in TransUnion, disclosed via a Schedule 13G/A.

The filing lists 16,189,511 shares beneficially owned as of the amendment, with 15,221,968 shares subject to sole voting power and full dispositive control over the reported position. The amendment is signed 05/14/2026.

Institutional holdings at this scale can affect shareholder composition; subsequent filings may show changes. Cash‑flow treatment and trading intentions are not stated in the excerpt.

Key Figures

Beneficial ownership: 16,189,511 shares Percent of class: 8.4% Sole voting power: 15,221,968 shares +3 more

6 metrics

Beneficial ownership 16,189,511 shares reported on Schedule 13G/A

Percent of class 8.4% percent of TransUnion common stock

Sole voting power 15,221,968 shares sole power to vote or direct the vote

Sole dispositive power 16,189,511 shares sole power to dispose or direct disposition

Dodge & Cox Stock Fund holding 10,063,200 shares registered investment company interest (5.2%)

Filing signature date 05/14/2026 date signed by Chief Compliance Officer

Key Terms

Schedule 13G/A, Beneficially owned, Sole dispositive power, Investment Company Act

4 terms

Schedule 13G/A regulatory

"Amendment No. 1 to Schedule 13G reporting beneficial ownership"

A Schedule 13G/A is an amended public filing with the U.S. securities regulator that updates a previous Schedule 13G, disclosing when an individual or group holds a substantial (typically over 5%) stake in a company and is claiming a passive, non‑controlling intent. Investors monitor these updates because rising or falling holdings can signal changing confidence, potential future moves, or shifts in voting power — like watching a public ledger where large shareholders quietly adjust their positions.

Beneficially owned financial

"Amount beneficially owned: 16,189,511 (b) Percent of class: 8.4 %"

Beneficially owned describes securities or assets where a person has the economic rights and control—such as the right to receive dividends and to direct voting—even if legal title is held in another name. Think of it like having the keys and using a car that’s registered to someone else: you get the benefits and make decisions. Investors care because beneficial ownership reveals who truly controls value and voting power, affecting corporate decisions and takeover dynamics.

Sole dispositive power regulatory

"Sole power to dispose or to direct the disposition of: 16,189,511"

Sole dispositive power is the exclusive legal authority to decide what happens to a security — for example, whether to sell, transfer, or retain shares — without needing anyone else’s permission. Investors care because it signals who truly controls the economic outcome of an investment: like holding the only key to a safe, the holder can realize gains or losses and may trigger regulatory reporting, insider rules, or influence over corporate ownership.

Investment Company Act regulatory

"investment companies registered under the Investment Company Act of 1940"

The Investment Company Act is a law that sets rules for businesses whose main activity is managing and selling pooled money, such as mutual funds and other investment funds. It matters to investors because it requires clear reporting, limits managers from putting their own interests ahead of clients, and mandates safekeeping and oversight of assets—similar to safety inspections and traffic rules that help keep shared vehicles reliable and trustworthy.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 1)

TransUnion

(Name of Issuer)

Common Stock

(Title of Class of Securities)

89400J107

(CUSIP Number)

03/31/2026

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

schemaVersion:

SCHEDULE 13G

CUSIP Number(s): 89400J107

1

Names of Reporting Persons

Dodge & Cox

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

CALIFORNIA

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 15,221,968.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 16,189,511.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

16,189,511.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

8.4 %

12

Type of Reporting Person (See Instructions)

IA

SCHEDULE 13G

Item 1.
(a)	Name of issuer: TransUnion
(b)	Address of issuer's principal executive offices: 555 West Adams Street, Chicago, Illinois, 60661
Item 2.
(a)	Name of person filing: Dodge & Cox
(b)	Address or principal business office or, if none, residence: 555 California Street 40th Floor, San Francisco, CA 94104
(c)	Citizenship: California, USA
(d)	Title of class of securities: Common Stock
(e)	CUSIP No.: 89400J107
Item 3.	If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)	Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)	Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)	Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)	Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)	An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)	An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)	A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)	A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)	A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)	A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:
(k)	Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.	Ownership
(a)	Amount beneficially owned: 16,189,511
(b)	Percent of class: 8.4 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 15,221,968
	(ii) Shared power to vote or to direct the vote: 0
	(iii) Sole power to dispose or to direct the disposition of: 16,189,511
	(iv) Shared power to dispose or to direct the disposition of: 0
Item 5.	Ownership of 5 Percent or Less of a Class.
	Not Applicable
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	If any other person is known to have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, such securities, a statement to that effect should be included in response to this item and, if such interest relates to more than 5 percent of the class, such person should be identified. A listing of the shareholders of an investment company registered under the Investment Company Act of 1940 or the beneficiaries of employee benefit plan, pension fund or endowment fund is not required. The clients of Dodge & Cox, including investment companies registered under the Investment Company Act of 1940 and other managed accounts, have the right to receive or power to direct the receipt of dividends from, and the proceeds from the sale of, TransUnion. Dodge & Cox Stock Fund, an investment company registered under the Investment Company Act of 1940, has an interest of 10,063,200 or 5.2%, of the class of securities reported herein.
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	Not Applicable
Item 8.	Identification and Classification of Members of the Group.
	Not Applicable
Item 9.	Notice of Dissolution of Group.
	Not Applicable

Item 10.

Certifications:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

Dodge & Cox

Signature:	/S/ Katherine M. Primas
Name/Title:	Chief Compliance Officer
Date:	05/14/2026

FAQ

What stake does Dodge & Cox report in TransUnion (TRU)?

Dodge & Cox reports beneficial ownership of 16,189,511 shares, representing 8.4% of TransUnion common stock. The Schedule 13G/A lists 15,221,968 shares with sole voting power and dispositive power over the full reported holding.

Does the filing identify any sub‑fund holdings for Dodge & Cox?

Yes. The filing states Dodge & Cox Stock Fund holds 10,063,200 shares, equal to 5.2% of the class. The disclosure attributes client holdings and identifies this registered investment company interest within the reported total.

When was the Schedule 13G/A signed and filed?

The amendment is signed by the Chief Compliance Officer on 05/14/2026. That signature date appears on the form; the filing is styled as Amendment No. 1 to the Schedule 13G for TransUnion common stock.

What voting and dispositive powers does Dodge & Cox report?

Dodge & Cox reports sole voting power over 15,221,968 shares and sole dispositive power over 16,189,511 shares. The filing lists no shared voting or dispositive power for the reported position.