Disciplined Growth Investors reports 6.3% stake in DV

Disciplined Growth Investors, Inc. reported a sizable ownership stake in DoubleVerify Holdings, Inc. common stock on a Schedule 13G. The firm beneficially owns 9,689,140 shares, representing 6.3% of the outstanding common stock.

Rhea-AI Filing Summary

Disciplined Growth Investors, Inc. reported a sizable ownership stake in DoubleVerify Holdings, Inc. common stock on a Schedule 13G. The firm beneficially owns 9,689,140 shares, representing 6.3% of the outstanding common stock. It holds sole voting power over 9,139,762 shares and sole dispositive power over all 9,689,140 shares, with no shared voting or dispositive power.

Key Figures

Beneficial ownership: 9,689,140 shares Ownership percentage: 6.3% Sole voting power: 9,139,762 shares +1 more

4 metrics

Beneficial ownership 9,689,140 shares Common stock beneficially owned by Disciplined Growth Investors, Inc.

Ownership percentage 6.3% Percent of DoubleVerify common stock class held by Disciplined Growth Investors, Inc.

Sole voting power 9,139,762 shares Shares over which Disciplined Growth Investors, Inc. has sole power to vote

Sole dispositive power 9,689,140 shares Shares over which Disciplined Growth Investors, Inc. has sole power to dispose

Key Terms

Schedule 13G, beneficially owned, sole voting power, sole dispositive power

4 terms

Schedule 13G regulatory

"Disciplined Growth Investors, Inc. reported a sizable ownership stake on a Schedule 13G."

A Schedule 13G is a formal document that investors file with the government when they acquire a large ownership stake in a company, usually for investment purposes rather than control. It helps keep the public informed about who owns significant parts of a company's shares, which can influence how the company is managed and how investors make decisions. Filing this schedule is important for transparency and understanding the ownership landscape of publicly traded companies.

beneficially owned financial

"Amount beneficially owned: 9,689,140"

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 voting power financial

"Sole power to vote or to direct the vote: 9,139,762"

Sole voting power is the exclusive right to cast votes attached to a shareholder’s stock without needing approval from anyone else. Like holding the only remote control for a TV, it lets that holder decide corporate matters such as board members, mergers, and policy changes, making it important to investors because it concentrates control and can strongly influence a company’s strategy and the value of its shares.

sole dispositive power financial

"Sole power to dispose or to direct the disposition of: 9,689,140"

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.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

How many DoubleVerify (DV) shares does Disciplined Growth Investors own?

Disciplined Growth Investors beneficially owns 9,689,140 shares of DoubleVerify common stock. This stake gives the firm 6.3% of the class, indicating a meaningful institutional position in the company.

What percentage of DoubleVerify (DV) is held by Disciplined Growth Investors?

Disciplined Growth Investors holds 6.3% of DoubleVerify’s common stock. This level of ownership requires disclosure on Schedule 13G as it exceeds the 5% beneficial ownership threshold for public reporting.

Does Disciplined Growth Investors share voting control over DoubleVerify (DV) shares?

No. The filing states Disciplined Growth Investors has sole voting power over 9,139,762 shares and shared voting power over 0 shares, indicating exclusive authority to vote those shares.

What dispositive power does Disciplined Growth Investors report over DoubleVerify (DV) shares?

Disciplined Growth Investors reports sole dispositive power over 9,689,140 shares and shared dispositive power over 0 shares, meaning it alone can decide whether and how to sell those shares.

Who signed the Schedule 13G for DoubleVerify (DV) on behalf of Disciplined Growth Investors?

The Schedule 13G was signed by Peter G. Rieke, identified as Chief Operating & Compliance Officer of Disciplined Growth Investors, Inc., acting as the authorized signatory for the reporting person.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 08/14/2026 - 04:20 PM Accepted by SEC EDGAR 08/14/2026 - 04:14 PM Learn about SEC filing dates

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

DoubleVerify Holdings, Inc.

(Name of Issuer)

Common Stock

(Title of Class of Securities)

25862V105

(CUSIP Number)

06/30/2026

(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): 25862V105

1

Names of Reporting Persons

DISCIPLINED GROWTH INVESTORS INC /MN

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

MINNESOTA

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 9,139,762.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 9,689,140.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

9,689,140.00

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)

6.3 %

12

Type of Reporting Person (See Instructions)

IA

SCHEDULE 13G

Item 1.
(a)	Name of issuer: DoubleVerify Holdings, Inc.
(b)	Address of issuer's principal executive offices: 462 BROADWAY, NEW YORK, NEW YORK, 10013
Item 2.
(a)	Name of person filing: Disciplined Growth Investors, Inc.
(b)	Address or principal business office or, if none, residence: 150 South Fifth Street Suite 2550 Minneapolis, MN 55402
(c)	Citizenship: Minnesota, USA
(d)	Title of class of securities: Common Stock
(e)	CUSIP Number(s): 25862V105
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: 9,689,140
(b)	Percent of class: 6.3%
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 9,139,762
	(ii) Shared power to vote or to direct the vote: 0
	(iii) Sole power to dispose or to direct the disposition of: 9,689,140
	(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.
	Not Applicable
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.

DISCIPLINED GROWTH INVESTORS INC /MN

Signature:	Peter G. Rieke
Name/Title:	Chief Operating & Compliance Officer
Date:	08/14/2026