William Blair Investment Management (IIIV) reports 0% stake in i3 Verticals

Rhea-AI Filing Summary

William Blair Investment Management, LLC filed an amended Schedule 13G indicating it no longer holds a reportable position in i3 Verticals, Inc. common stock. The filer reports 0 shares beneficially owned, representing 0.0% of the class, with no sole or shared voting or dispositive power.

The filing states that William Blair Investment Management, LLC now has ownership of 5 percent or less of i3 Verticals’ common stock, confirming the complete absence of beneficial ownership as of the report.

Key Figures

Shares beneficially owned: 0 Percent of class: 0.0% Sole voting power: 0 +3 more

6 metrics

Shares beneficially owned 0 Amount beneficially owned in i3 Verticals, Inc. common stock

Percent of class 0.0% Reported percentage of i3 Verticals, Inc. common stock class

Sole voting power 0 Number of shares over which sole voting power is held

Shared voting power 0 Number of shares over which shared voting power is held

Sole dispositive power 0 Number of shares over which sole dispositive power is held

Shared dispositive power 0 Number of shares over which shared dispositive power is held

Key Terms

beneficially owned, Sole Voting Power, Shared Dispositive Power, Ownership of 5 percent or less of a class

4 terms

beneficially owned financial

"Amount beneficially owned: 0 (b) | Percent of class: 0.0%"

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

"5 | Sole Voting Power 0.00 6 | Shared Voting Power 0.00"

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.

Shared Dispositive Power financial

"8 | Shared Dispositive Power 0.00 9 0.00"

Ownership of 5 percent or less of a class financial

"Item 5. | Ownership of 5 Percent or Less of a Class."

FAQ

What did William Blair Investment Management report in its Schedule 13G/A for IIIV?

William Blair Investment Management, LLC reported 0 shares beneficially owned of i3 Verticals, Inc. common stock, representing 0.0% of the class, and no sole or shared voting or dispositive power.

Does William Blair Investment Management still own more than 5% of IIIV stock?

No. William Blair Investment Management, LLC reported ownership of 5 percent or less of i3 Verticals’ common stock, with 0 shares and 0.0% beneficial ownership disclosed.

What voting power over IIIV shares did William Blair report in this 13G/A?

William Blair Investment Management, LLC reported 0 shares with sole voting power and 0 shares with shared voting power, indicating no voting authority over i3 Verticals’ common stock.

What dispositive power over IIIV shares does William Blair currently have?

The filing shows 0 shares subject to sole dispositive power and 0 shares subject to shared dispositive power, so William Blair reports no power to dispose of i3 Verticals’ common stock.

Who signed the amended Schedule 13G for IIIV on behalf of William Blair?

The amended Schedule 13G was signed by Telmo Martins, Chief Compliance Officer of William Blair Investment Management, LLC, on 08/11/2026.

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Available on EDGAR 08/11/2026 - 09:11 PM Accepted by SEC EDGAR 08/11/2026 - 09:10 PM Learn about SEC filing dates

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 1)

i3 Verticals, Inc.

(Name of Issuer)

Common Stock

(Title of Class of Securities)

46571Y107

(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): 46571Y107

1

Names of Reporting Persons

WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC

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

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

0.00

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)

0.0 %

12

Type of Reporting Person (See Instructions)

IA

SCHEDULE 13G

Item 1.
(a)	Name of issuer: i3 Verticals, Inc.
(b)	Address of issuer's principal executive offices: 40 BURTON HILLS BLVD., 40 BURTON HILLS BLVD., NASHVILLE, TENNESSEE, 37215.
Item 2.
(a)	Name of person filing: William Blair Investment Management, LLC
(b)	Address or principal business office or, if none, residence: 150 North Riverside Plaza, Chicago, IL 60606
(c)	Citizenship: Delaware
(d)	Title of class of securities: Common Stock
(e)	CUSIP No.: 46571Y107
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: 0
(b)	Percent of class: 0.0%
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 0
	(ii) Shared power to vote or to direct the vote: 0
	(iii) Sole power to dispose or to direct the disposition of: 0
	(iv) Shared power to dispose or to direct the disposition of: 0
Item 5.	Ownership of 5 Percent or Less of a Class.
	Ownership of 5 percent or less of a class
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.

WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC

Signature:	Telmo Martins
Name/Title:	Chief Compliance Officer
Date:	08/11/2026