Saturn V Capital shows sub-5% Monopar Therapeutics (MNPR) stake in 13G/A

Rhea-AI Filing Summary

Monopar Therapeutics received an updated Schedule 13G/A from Saturn V Capital Management LP and Xiaoying Tian reporting their beneficial ownership of the company’s common stock. The reporting persons state that clients advised by Saturn V collectively hold 313,384 shares of Monopar common stock.

This position represents 4.68% of the common stock, based on 6,699,062 shares outstanding as of April 30, 2026, as disclosed in Monopar’s Form 10-Q. Saturn V and Tian report 0 shares with sole voting or dispositive power and 313,384 shares with shared voting and shared dispositive power.

The shares are held across pooled investment vehicles and managed accounts (the “Clients”), none of which individually owns 5% or more of Monopar’s outstanding shares. Saturn V and Tian each disclaim beneficial ownership of the shares held by the Clients and indicate that their aggregate ownership is 5 percent or less of the class.

Key Figures

Shares beneficially owned: 313,384 shares Percent of class: 4.68% Shares outstanding: 6,699,062 shares +2 more

5 metrics

Shares beneficially owned 313,384 shares Aggregate shares reported by all reporting persons

Percent of class 4.68% Ownership percentage of Monopar common stock reported by each reporting person

Shares outstanding 6,699,062 shares Monopar common shares outstanding as of April 30, 2026, from Form 10-Q

Shared voting power 313,384 shares Shares over which each reporting person has shared power to vote or direct the vote

Sole voting power 0 shares Shares over which each reporting person has sole power to vote or direct the vote

Key Terms

beneficial ownership, shared voting power, dispositive power, Schedule 13G/A, +1 more

5 terms

beneficial ownership financial

"Amount beneficially owned: Aggregate of all Reporting Persons: 313,384"

Beneficial ownership means the person or entity that actually enjoys the benefits of owning shares or other assets — such as receiving dividends, voting rights, or price gains — even if the legal title is held in another name. For investors it matters because knowing who truly controls and profits from a company reveals who can influence decisions, exposes potential conflicts of interest or hidden concentration of power, and affects transparency and risk in the stock.

shared voting power financial

"Shared Voting Power 313,384.00"

Shared voting power occurs when two or more parties jointly have the right to vote or decide how a block of company shares is cast, like co-owners who must agree before moving a piece of furniture. Investors care because who controls voting rights affects board elections, major corporate decisions and takeover outcomes, and shared control can alter regulatory disclosures and the practical influence any holder has over a company’s direction and value.

dispositive power financial

"Shared Dispositive Power 313,384.00"

Dispositive power is the authority to decide the final outcome of an asset, legal claim, contract, or corporate action — in effect the power to dispose of or resolve something. For investors it matters because whoever holds that authority can determine who gets paid, who controls an asset or vote, and how risks and returns are allocated; think of it like holding the key that lets you lock in the winner or loser in a deal.

Schedule 13G/A regulatory

"Ownership of 5 percent or less of a class"

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.

percent of class financial

"Percent of class: Aggregate of all Reporting Persons: 4.68%+"

Percent of class is the portion of a specific category of securities—such as a company’s common shares, preferred shares, or a bond series—that takes part in or approves a corporate action (vote, consent, tender, etc.). Investors watch this number because it reveals how much support or opposition exists within that particular shareholder group; like counting how many members of a club back a proposal, it can determine whether a plan passes or how influence is distributed.

FAQ

What stake in Monopar Therapeutics (MNPR) does Saturn V Capital Management report?

Saturn V Capital Management reports that clients it manages beneficially own 313,384 Monopar Therapeutics common shares, representing 4.68% of the class based on 6,699,062 shares outstanding as of April 30, 2026.

Who are the reporting persons on this Schedule 13G/A for Monopar Therapeutics (MNPR)?

The reporting persons are Saturn V Capital Management LP and Xiaoying Tian. Saturn V is the investment manager to pooled vehicles and accounts holding Monopar shares, and Tian is the managing member of Saturn V’s general partner.

Do Saturn V Capital Management and Xiaoying Tian claim beneficial ownership of MNPR shares?

Both Saturn V Capital Management LP and Xiaoying Tian disclaim beneficial ownership of the Monopar Therapeutics shares, stating that the shares are held by their investment management clients, who bear the economic interest in the holdings.

How much voting and dispositive power over MNPR shares do the reporting persons have?

Saturn V Capital Management LP and Xiaoying Tian each report 0 shares with sole voting or dispositive power and 313,384 shares with shared voting and shared dispositive power, reflecting their authority to vote or direct the disposition for their clients.

Is any single client of Saturn V a 5% or greater holder of Monopar Therapeutics (MNPR)?

No. The filing states that no individual client of Saturn V holds or beneficially owns 5% or more of Monopar’s outstanding common shares; the reported 4.68% position is an aggregate across multiple clients.

On what share count is the 4.68% MNPR ownership calculation based?

The 4.68% beneficial ownership figure is based on 6,699,062 Monopar Therapeutics common shares outstanding as of April 30, 2026, as set forth in Monopar’s Form 10-Q filed on May 14, 2026.

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

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Available on EDGAR 08/12/2026 - 06:26 PM Accepted by SEC EDGAR 08/12/2026 - 06:26 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)

Monopar Therapeutics

(Name of Issuer)

Common Stock, $0.001 par value

(Title of Class of Securities)

61023L207

(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): 61023L207

1

Names of Reporting Persons

Saturn V Capital Management LP

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 313,384.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 313,384.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

313,384.00

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)

4.7 %

12

Type of Reporting Person (See Instructions)

IA

Comment for Type of Reporting Person: * Saturn V Capital Management LP acts as the investment manager of certain pooled investment vehicles and managed accounts (collectively the "Clients") in which such shares referred to above are held. As a result, Saturn V Capital Management LP possesses the power to vote and dispose or direct the disposition of all the shares beneficially owned by the Clients. No Client holds or beneficially owns five percent or more of the outstanding shares of the Issuer. Saturn V Capital Management LP disclaims beneficial ownership of any of the shares held by the Clients. + Based on 6,699,062 shares outstanding of the Issuer as of April 30, 2026, as set forth in the Issuer's Form 10-Q filed with the Securities and Exchange Commission on May 14, 2026.

SCHEDULE 13G

CUSIP Number(s): 61023L207

1

Names of Reporting Persons

Xiaoying Tian

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

UNITED STATES

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 313,384.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 313,384.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

313,384.00

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)

4.7 %

12

Type of Reporting Person (See Instructions)

IN

Comment for Type of Reporting Person: * Ms. Tian is the Managing Member of SVCM GP LLC, the general partner of Saturn V Capital Management LP, the Investment Manager of the Clients. As a result, Ms. Tian possesses the power to vote and dispose or direct the disposition of all the shares beneficially owned by the Clients. Ms. Tian disclaims beneficial ownership of any of the shares held by the Clients. + Based on 6,699,062 shares outstanding of the Issuer as of April 30, 2026, as set forth in the Issuer's Form 10-Q filed with the Securities and Exchange Commission on May 14, 2026.

SCHEDULE 13G

Item 1.
(a)	Name of issuer: Monopar Therapeutics
(b)	Address of issuer's principal executive offices: 1000 Skokie Blvd., Suite 350, WILMETTE, ILLINOIS, 60091.
Item 2.
(a)	Name of person filing: Saturn V Capital Management LP, Xiaoying Tian
(b)	Address or principal business office or, if none, residence: 823 Congress Avenue, Suite 1030, Austin, TX 78701
(c)	Citizenship: Saturn V Capital Management LP is a Delaware Limited Partnership. Xiaoying Tian is a citizen of the United States.
(d)	Title of class of securities: Common Stock, $0.001 par value
(e)	CUSIP No.: 61023L207
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: Aggregate of all Reporting Persons: 313,384 Saturn V Capital Management LP - 313,384* Xiaoying Tian - 313,384** * Saturn acts as the investment manager for the Clients who hold the Shares described herein and referred to above. As a result, Saturn possesses the power to vote and dispose or direct the disposition of all the Shares beneficially owned by the Clients. No Client holds or beneficially owns five percent or more of the outstanding Shares of the Issuer. Saturn disclaims beneficial ownership of any of the Shares held by the Clients. ** Ms. Tian is the Managing Member of SVCM GP LLC, the general partner of Saturn, the Investment Manager of the Clients. As a result, Ms. Tian possesses the power to vote and dispose or direct the disposition of all the Shares beneficially owned by the Clients. Ms. Tian disclaims beneficial ownership of any of the Shares held by the Clients.
(b)	Percent of class: Aggregate of all Reporting Persons: 4.68%+ Saturn V Capital Management LP - 4.68%+* Xiaoying Tian - 4.68%+** * Saturn acts as the investment manager for the Clients who hold the Shares described herein and referred to above. As a result, Saturn possesses the power to vote and dispose or direct the disposition of all the Shares beneficially owned by the Clients. No Client holds or beneficially owns five percent or more of the outstanding Shares of the Issuer. Saturn disclaims beneficial ownership of any of the Shares held by the Clients. ** Ms. Tian is the Managing Member of SVCM GP LLC, the general partner of Saturn, the Investment Manager of the Clients. As a result, Ms. Tian possesses the power to vote and dispose or direct the disposition of all the Shares beneficially owned by the Clients. Ms. Tian disclaims beneficial ownership of any of the Shares held by the Clients. + Based on 6,699,062 shares outstanding of the Issuer as of April 30, 2026, as set forth in the Issuer's Form 10-Q filed with the Securities and Exchange Commission on May 14, 2026.
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: Saturn V Capital Management LP - 0 Xiaoying Tian - 0
	(ii) Shared power to vote or to direct the vote: Saturn V Capital Management LP - 313,384* Xiaoying Tian - 313,384** * Saturn acts as the investment manager for the Clients who hold the Shares described herein and referred to above. As a result, Saturn possesses the power to vote and dispose or direct the disposition of all the Shares beneficially owned by the Clients. No Client holds or beneficially owns five percent or more of the outstanding Shares of the Issuer. Saturn disclaims beneficial ownership of any of the Shares held by the Clients. ** Ms. Tian is the Managing Member of SVCM GP LLC, the general partner of Saturn, the Investment Manager of the Clients. As a result, Ms. Tian possesses the power to vote and dispose or direct the disposition of all the Shares beneficially owned by the Clients. Ms. Tian disclaims beneficial ownership of any of the Shares held by the Clients.
	(iii) Sole power to dispose or to direct the disposition of: Saturn V Capital Management LP - 0 Xiaoying Tian - 0
	(iv) Shared power to dispose or to direct the disposition of: Saturn V Capital Management LP - 313,384* Xiaoying Tian - 313,384** * Saturn acts as the investment manager for the Clients who hold the Shares described herein and referred to above. As a result, Saturn possesses the power to vote and dispose or direct the disposition of all the Shares beneficially owned by the Clients. No Client holds or beneficially owns five percent or more of the outstanding Shares of the Issuer. Saturn disclaims beneficial ownership of any of the Shares held by the Clients. ** Ms. Tian is the Managing Member of SVCM GP LLC, the general partner of Saturn, the Investment Manager of the Clients. As a result, Ms. Tian possesses the power to vote and dispose or direct the disposition of all the Shares beneficially owned by the Clients. Ms. Tian disclaims beneficial ownership of any of the Shares held by the Clients.
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.

Saturn V Capital Management LP

Signature:	Xiaoying Tian
Name/Title:	Xiaoying Tian, Managing Member of SVCM GP LLC, the General Partner of Saturn V Capital Management LP
Date:	08/12/2026

Xiaoying Tian

Signature:	Xiaoying Tian
Name/Title:	Xiaoying Tian
Date:	08/12/2026