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Mobia Medical (MOBI) backers disclose sizable preferred stakes before IPO

(Neutral)
(Neutral)
Form Type
3

Rhea-AI Filing Summary

Mobia Medical, Inc. received an initial ownership report from several more-than-10% holders tied to Green Park & Golf Ventures - Houston, LLC and affiliated HTX investment LLCs. The filing lists indirect holdings of preferred stock that are convertible into common shares.

The positions include Series F Preferred Stock convertible into 126,005 shares of common stock, Series E-2 Preferred Stock convertible into 138,233 shares of common stock, and two Series E-1 Preferred Stock positions convertible into 83,579 and 38,875 common shares. Each share of these preferred series will convert into common stock immediately prior to completion of Mobia Medical’s initial public offering pursuant to their terms.

The securities are held through HTX MCT1, HTX MCT2, HTX MCT3 and HTX MCT4 investment LLCs. Green Park & Golf Ventures - Houston, LLC is the managing member of these entities, and Clay M. Heighten, Carl D. Soderstrom and Gilbert G. Garcia II share voting and dispositive power over the shares and may be deemed to beneficially own them.

Positive

  • None.

Negative

  • None.
Insider Green Park & Golf Ventures - Houston, LLC, HTX MCT1 0320 Investment, LLC, HTX MCT2 0221 Investment, LLC, HTX MCT3 0322 Investment, LLC, HTX MCT4 0226 Investment, LLC, Heighten Clay M, Soderstrom Carl D, Garcia Gilbert G. II
Role 10% Owner | 10% Owner | 10% Owner | 10% Owner | 10% Owner | 10% Owner | 10% Owner | 10% Owner
Type Security Shares Price Value
holding Series E-1 Preferred Stock -- -- --
holding Series E-1 Preferred Stock -- -- --
holding Series E-2 Preferred Stock -- -- --
holding Series F Preferred Stock -- -- --
Holdings After Transaction: Series E-1 Preferred Stock — 38,875 shares (Indirect, See Footnote); Series E-2 Preferred Stock — 138,233 shares (Indirect, See Footnote); Series F Preferred Stock — 126,005 shares (Indirect, See Footnote)
Footnotes (1)
  1. Each share of Series F Preferred Stock, Series E-1 Preferred Stock and Series E-2 Preferred Stock will convert into Common Stock immediately prior to the completion of the Issuer's initial public offering pursuant to its terms. The securities are held by HTX MCT1 0320 Investment, LLC ("HTX MCT1"). The securities are held by HTX MCT2 0221 Investment, LLC ("HTX MCT2"). The securities are held by HTX MCT3 0322 Investment, LLC ("HTX MCT3"). Green Park & Golf Ventures - Houston, LLC ("GPG Ventures Houston") is the managing member of each of HTX MCT1, HTX MCT2, HTX MCT3 and HTX MCT4 0226 Investment, LLC ("HTX MCT4"). Clay M. Heighten, MD, Carl D. Soderstrom and Gilbert G. Garcia II are managers of GPG Ventures Houston and share voting and dispositive power with respect to the shares held by each of HTX MCT1, HTX MCT2, HTX MCT3 and HTX MCT4, and as a result may be deemed to beneficially own such securities.
Series F underlying common 126,005 shares Underlying common stock for Series F Preferred
Series E-2 underlying common 138,233 shares Underlying common stock for Series E-2 Preferred
Series E-1 underlying common (position 1) 83,579 shares Underlying common stock for one Series E-1 Preferred holding
Series E-1 underlying common (position 2) 38,875 shares Underlying common stock for second Series E-1 Preferred holding
Preferred exercise price $0.0000 per share Conversion/exercise price for each preferred series
Series F Preferred Stock financial
"Each share of Series F Preferred Stock, Series E-1 Preferred Stock and Series E-2 Preferred Stock will convert into Common Stock"
Series F preferred stock is a class of company shares that gives holders priority over common shareholders for dividend payments and for getting money back if the company is sold or liquidated, much like a ticket that moves you to the front of the line. These shares often carry a fixed dividend and special rights—sometimes including conversion into common stock—so investors consider them when weighing income, downside protection and potential ownership dilution.
Series E-1 Preferred Stock financial
"Each share of Series F Preferred Stock, Series E-1 Preferred Stock and Series E-2 Preferred Stock will convert into Common Stock"
Series E-2 Preferred Stock financial
"Each share of Series F Preferred Stock, Series E-1 Preferred Stock and Series E-2 Preferred Stock will convert into Common Stock"
initial public offering financial
"will convert into Common Stock immediately prior to the completion of the Issuer's initial public offering pursuant to its terms"
An initial public offering (IPO) is when a private company first sells its shares to the public and becomes a stock-listed company. It matters because it allows the company to raise money from a wide range of investors, helping it grow, while giving early shareholders a way to sell some of their ownership.
beneficially own financial
"may be deemed to beneficially own such securities"
Beneficially own means having the economic rights and risks of a security—such as the right to receive dividends, sell the shares, or profit from price changes—whether or not your name appears on the official share register. Think of it like renting a car: you use it and reap the benefits even if the title lists someone else. Investors care because beneficial ownership determines who truly controls value, must be disclosed under securities rules, and can signal potential influence or trading activity that affects a stock’s price.
voting and dispositive power financial
"share voting and dispositive power with respect to the shares held"

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FAQ

What does the Mobia Medical (MOBI) Form 3 filing show about ownership?

The Form 3 shows indirect holdings of Mobia Medical preferred stock by HTX investment LLCs managed by Green Park & Golf Ventures - Houston, LLC. These positions represent more-than-10% beneficial ownership stakes that will convert into common shares before Mobia Medical’s initial public offering pursuant to their terms.

Which Mobia Medical preferred stock series are reported in this Form 3?

The filing lists Series F Preferred Stock, Series E-1 Preferred Stock and Series E-2 Preferred Stock. Each share of these series will convert into common stock immediately prior to completion of Mobia Medical’s initial public offering, making them economically equivalent to common shares after the IPO closes.

How many Mobia Medical common shares underlie the reported preferred stock holdings?

The filing reports Series F Preferred convertible into 126,005 common shares, Series E-2 Preferred convertible into 138,233 common shares, and two Series E-1 Preferred positions convertible into 83,579 and 38,875 common shares. These figures describe potential common stock after the mandatory conversion tied to the IPO.

Who controls the HTX investment LLCs holding Mobia Medical preferred shares?

Green Park & Golf Ventures - Houston, LLC is the managing member of HTX MCT1, HTX MCT2, HTX MCT3 and HTX MCT4. Clay M. Heighten, Carl D. Soderstrom and Gilbert G. Garcia II are managers of this entity and share voting and dispositive power over the Mobia Medical securities.

How will the Mobia Medical preferred stock convert in connection with the IPO?

Each share of Series F, Series E-1 and Series E-2 Preferred Stock will convert into Mobia Medical common stock immediately before completion of the company’s initial public offering. This automatic conversion aligns the preferred holders with common shareholders once the IPO has been completed.

Are the Mobia Medical preferred stock holdings direct or indirect for the reporting persons?

The holdings are reported as indirect, with nature of ownership described in footnotes. The preferred shares are held by HTX MCT1, HTX MCT2, HTX MCT3 and HTX MCT4 LLCs, while Green Park & Golf Ventures - Houston, LLC and its managers may be deemed to beneficially own the securities.
SEC Form 3
FORM 3UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number:3235-0104
Estimated average burden
hours per response:0.5
1. Name and Address of Reporting Person*
Green Park & Golf Ventures - Houston, LLC

(Last)(First)(Middle)
3701 KIRBY DR., SUITE 820

(Street)
HOUSTON TEXAS 77098

(City)(State)(Zip)

UNITED STATES

(Country)
2. Date of Event Requiring Statement (Month/Day/Year)
05/07/2026
3. Issuer Name and Ticker or Trading Symbol
Mobia Medical, Inc. [ MOBI ]
3a. Foreign Trading Symbol
5. If Amendment, Date of Original Filed (Month/Day/Year)
4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
DirectorX10% Owner
Officer (give title below)Other (specify below)
6. Individual or Joint/Group Filing (Check Applicable Line)
Form filed by One Reporting Person
XForm filed by More than One Reporting Person
Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4) 2. Amount of Securities Beneficially Owned (Instr. 4) 3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 4. Nature of Indirect Beneficial Ownership (Instr. 5)
Table II - Derivative Securities Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4) 2. Date Exercisable and Expiration Date (Month/Day/Year)3. Title and Amount of Securities Underlying Derivative Security (Instr. 4) 4. Conversion or Exercise Price of Derivative Security 5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 6. Nature of Indirect Beneficial Ownership (Instr. 5)
Date ExercisableExpiration DateTitleAmount or Number of Shares
Series E-1 Preferred Stock (1) (1)Common Stock38,875(1)ISee Footnote(2)(5)
Series E-1 Preferred Stock (1) (1)Common Stock83,579(1)ISee Footnote(3)(5)
Series E-2 Preferred Stock (1) (1)Common Stock138,233(1)ISee Footnote(4)(5)
Series F Preferred Stock (1) (1)Common Stock126,005(1)ISee Footnote(4)(5)
1. Name and Address of Reporting Person*
Green Park & Golf Ventures - Houston, LLC

(Last)(First)(Middle)
3701 KIRBY DR., SUITE 820

(Street)
HOUSTON TEXAS 77098

(City)(State)(Zip)

UNITED STATES

(Country)

Relationship of Reporting Person(s) to Issuer
DirectorX10% Owner
Officer (give title below)Other (specify below)
1. Name and Address of Reporting Person*
HTX MCT1 0320 Investment, LLC

(Last)(First)(Middle)
3701 KIRBY DR., SUITE 820

(Street)
HOUSTON TEXAS 77098

(City)(State)(Zip)

UNITED STATES

(Country)

Relationship of Reporting Person(s) to Issuer
DirectorX10% Owner
Officer (give title below)Other (specify below)
1. Name and Address of Reporting Person*
HTX MCT2 0221 Investment, LLC

(Last)(First)(Middle)
3701 KIRBY DR., SUITE 820

(Street)
HOUSTON TEXAS 77098

(City)(State)(Zip)

UNITED STATES

(Country)

Relationship of Reporting Person(s) to Issuer
DirectorX10% Owner
Officer (give title below)Other (specify below)
1. Name and Address of Reporting Person*
HTX MCT3 0322 Investment, LLC

(Last)(First)(Middle)
3701 KIRBY DR., SUITE 820

(Street)
HOUSTON TEXAS 77098

(City)(State)(Zip)

UNITED STATES

(Country)

Relationship of Reporting Person(s) to Issuer
DirectorX10% Owner
Officer (give title below)Other (specify below)
1. Name and Address of Reporting Person*
HTX MCT4 0226 Investment, LLC

(Last)(First)(Middle)
3701 KIRBY DR., SUITE 820

(Street)
HOUSTON TEXAS 77098

(City)(State)(Zip)

UNITED STATES

(Country)

Relationship of Reporting Person(s) to Issuer
DirectorX10% Owner
Officer (give title below)Other (specify below)
1. Name and Address of Reporting Person*
Heighten Clay M

(Last)(First)(Middle)
5910 N. CENTRAL EXPRESSWAY, SUITE 1400

(Street)
DALLAS TEXAS 75206

(City)(State)(Zip)

UNITED STATES

(Country)

Relationship of Reporting Person(s) to Issuer
DirectorX10% Owner
Officer (give title below)Other (specify below)
1. Name and Address of Reporting Person*
Soderstrom Carl D

(Last)(First)(Middle)
5910 N. CENTRAL EXPRESSWAY, SUITE 1400

(Street)
DALLAS TEXAS 75206

(City)(State)(Zip)

UNITED STATES

(Country)

Relationship of Reporting Person(s) to Issuer
DirectorX10% Owner
Officer (give title below)Other (specify below)
1. Name and Address of Reporting Person*
Garcia Gilbert G. II

(Last)(First)(Middle)
5910 N. CENTRAL EXPRESSWAY, SUITE 1400

(Street)
DALLAS TEXAS 75206

(City)(State)(Zip)

UNITED STATES

(Country)

Relationship of Reporting Person(s) to Issuer
DirectorX10% Owner
Officer (give title below)Other (specify below)
Explanation of Responses:
1. Each share of Series F Preferred Stock, Series E-1 Preferred Stock and Series E-2 Preferred Stock will convert into Common Stock immediately prior to the completion of the Issuer's initial public offering pursuant to its terms.
2. The securities are held by HTX MCT1 0320 Investment, LLC ("HTX MCT1").
3. The securities are held by HTX MCT2 0221 Investment, LLC ("HTX MCT2").
4. The securities are held by HTX MCT3 0322 Investment, LLC ("HTX MCT3").
5. Green Park & Golf Ventures - Houston, LLC ("GPG Ventures Houston") is the managing member of each of HTX MCT1, HTX MCT2, HTX MCT3 and HTX MCT4 0226 Investment, LLC ("HTX MCT4"). Clay M. Heighten, MD, Carl D. Soderstrom and Gilbert G. Garcia II are managers of GPG Ventures Houston and share voting and dispositive power with respect to the shares held by each of HTX MCT1, HTX MCT2, HTX MCT3 and HTX MCT4, and as a result may be deemed to beneficially own such securities.
Remarks:
This Form 3 is the fifth of five Forms 3 filed relating to the same event. Combined, the five Forms 3 report the holdings for the following reporting persons: Green Park & Golf Ventures II, LLC, Clay M. Heighten, MD, Carl D. Soderstrom, Gilbert G. Garcia II, GPG BFH, LLC, GPG Charles & Potomac, LLC, GPG Dais, LLC, GPG GR, LLC, GPG Healthcare Opportunities Fund II, LLC, GPG Healthcare Opportunities Fund, LLC, GPG JCT, LLC, GPG MTI 22, LLC, GPG MTI 25, LLC, GPG MOBI, LLC, GPG MTI 3-17 Investment, LLC, GPG PHL, LLC, GPG RM Investment, LLC, GPG SC, LLC, GPG WG, LLC, GPG MTIF, LLC, Micro TI Investment 2, LLC, Micro TI Investment, LLC, MTI 20 Investment, LLC, MTI 2015 Investment, LLC, HTX MCT1 0320 Investment, LLC, HTX MCT2 0221 Investment, LLC, HTX MCT3 0322 Investment, LLC, HTX MCT4 0226 Investment, LLC and Green Park & Golf Ventures - Houston, LLC. The Form 3 has been split into five filings because there are more than 10 reporting persons in total, and the SEC's EDGAR filing system limits a single Form 3 to a maximum of 10 reporting persons.
/s/ Gilbert Garcia II, Vice President of HTX MCT1 0320 Investment, LLC06/29/2026
/s/ Gilbert Garcia II, Vice President of HTX MCT2 0221 Investment, LLC06/29/2026
/s/ Gilbert Garcia II, Vice President of HTX MCT3 0322 Investment, LLC06/29/2026
/s/ Gilbert Garcia II, Vice President of HTX MCT4 0226 Investment, LLC06/29/2026
/s/ Gilbert Garcia II, Vice President of Green Park & Golf Ventures - Houston, LLC06/29/2026
/s/ Clay M. Heighten, MD06/29/2026
/s/ Carl D. Soderstrom06/29/2026
/s/ Gilbert G. Garcia II06/29/2026
** Signature of Reporting PersonDate
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 3: SEC 1473 (03-26)