Glenbrook Capital holds 134,515 shares of INVO Fertility (NASDAQ: IVF) filing

Rhea-AI Filing Summary

Glenbrook Capital Management reports beneficial ownership of 134,515 shares of INVO Fertility, Inc. common stock, representing 8.33% of the class based on 1,615,419 shares outstanding as disclosed in the issuer's March 25, 2026 press release. The Schedule 13G states the position is held with shared voting and dispositive power and is filed by Glenbrook as a Nevada corporation. The filing is signed by Richard Rudgley on behalf of Glenbrook Capital Management.

Key Figures

Shares beneficially owned: 134,515 shares Percent of class: 8.33% Shares outstanding (reference): 1,615,419 shares

3 metrics

Shares beneficially owned 134,515 shares Amount reported on Schedule 13G

Percent of class 8.33% Percent based on 1,615,419 shares outstanding as of March 25, 2026

Shares outstanding (reference) 1,615,419 shares Issuer press release cited March 25, 2026

Key Terms

Schedule 13G, beneficially owned, shared dispositive power, CUSIP

4 terms

Schedule 13G regulatory

"This report on is being filed by Glenbrook Capital Management"

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: The information required by Item 4(a) is set forth"

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.

shared dispositive power financial

"Shared Dispositive Power 134,515.00"

CUSIP regulatory

"CUSIP Number(s): 44984F880"

A CUSIP is a nine-character alphanumeric code that uniquely identifies a U.S. or Canadian financial security—such as a stock, bond, or fund share—like a Social Security number for an investment. It matters to investors because brokers, exchanges and record-keepers use the CUSIP to match trades, track ownership, settle transactions and pull accurate records, reducing errors and ensuring money and securities go to the right place.

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

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Accepted by SEC EDGAR 04/01/2026 - 04:59 PM Learn about SEC filing dates

FAQ

What stake does Glenbrook Capital Management hold in INVO Fertility (IVF)?

Glenbrook Capital Management holds 134,515 shares, equal to 8.33%. This percentage is calculated using 1,615,419 shares outstanding as disclosed in the issuer's March 25, 2026 press release and reported on the Schedule 13G.

Does Glenbrook have voting control over the INVO Fertility shares?

The filing reports shared voting power of 134,515 shares. Glenbrook reports 0 sole voting power and shared voting and dispositive power for the referenced shares, indicating control is shared rather than solely held by Glenbrook.

What date and reference does the Schedule 13G use for outstanding shares?

The Schedule 13G uses 1,615,419 shares outstanding as disclosed on March 25, 2026. The filing explicitly ties the percentage calculation to the issuer's March 25, 2026 press release figure for shares outstanding.

Who filed the Schedule 13G for Glenbrook Capital Management?

The filing was made by Glenbrook Capital Management, a Nevada corporation. It is signed by Richard Rudgley, identified as President, and lists Glenbrook's principal business address and investment committee members in Item 2.

Is the reported ownership on behalf of another person or fund?

The filing notes Glenbrook acts as an investment manager to funds/accounts. Item 6 explains other persons with rights to dividends or proceeds should be disclosed; the statement refers readers to Item 2(a) for fund/account relationships.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

INVO Fertility, Inc.

(Name of Issuer)

Common stock, par value $0.0001 per share

(Title of Class of Securities)

44984F880

(CUSIP Number)

03/25/2026

(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): 44984F880

1

Names of Reporting Persons

GLENBROOK CAPITAL MANAGEMENT

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

NEVADA

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 134,515.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 134,515.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

134,515.00

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)

8.33 %

12

Type of Reporting Person (See Instructions)

CO

SCHEDULE 13G

Item 1.
(a)	Name of issuer: INVO Fertility, Inc.
(b)	Address of issuer's principal executive offices: 5582 BROADCAST COURT, SARASOTA, FL, 34240
Item 2.
(a)	Name of person filing: This report on Schedule 13G is being filed by Glenbrook Capital Management, a Nevada corporation ("GCM" or the "Reporting Person") with respect to the shares of common stock, par value $0.0001 per share (the "Common Stock") of INVO Fertility, Inc., a Nevada corporation (the "Issuer"). Grover T. Wickersham, the Chairman of the Board of Directors of GCM, Richard Rudgley, and Robert W. Lishman serve on the investment committee of GCM, which serves as the investment manager to various funds and accounts which hold the shares of Common Stock reported herein. The filing of this statement should not be construed as an admission that any of the foregoing persons or any Reporting Person is, for the purposes of Section 13 of the Securities Exchange Act of 1934, the beneficial owner of the securities reported herein.
(b)	Address or principal business office or, if none, residence: The address for the Reporting Person is 5396 Avenue 18 1/2, Chowchilla, CA 93610.
(c)	Citizenship: GCM is a Nevada corporation.
(d)	Title of class of securities: Common stock, par value $0.0001 per share
(e)	CUSIP Number(s): 44984F880
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: The information required by Item 4(a) is set forth in Row 9 of the cover page for the Reporting Person and is incorporated herein by reference. The percentage set forth in this Schedule 13G is calculated based upon an aggregate of 1,615,419 shares of Common Stock outstanding as disclosed in the press release issued by the Issuer on March 25, 2026.
(b)	Percent of class: 8.33%
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: The information required by Item 4(c)(i) is set forth in Row 5 of the cover page for the Reporting Person and is incorporated herein by reference.
	(ii) Shared power to vote or to direct the vote: The information required by Item 4(c)(ii) is set forth in Row 6 of the cover page for the Reporting Person and is incorporated herein by reference.
	(iii) Sole power to dispose or to direct the disposition of: The information required by Item 4(c)(iii) is set forth in Row 7 of the cover page for the Reporting Person and is incorporated herein by reference.
	(iv) Shared power to dispose or to direct the disposition of: The information required by Item 4(c)(iv) is set forth in Row 8 of the cover page for the Reporting Person and is incorporated herein by reference.
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. See Item 2(a).
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 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.

GLENBROOK CAPITAL MANAGEMENT

Signature:	/s/ Richard Rudgley
Name/Title:	Richard Rudgley, President
Date:	04/01/2026