Monopar COO exercises 5,254 RSUs and pays taxes

Monopar Therapeutics Chief Operating Officer Andrew Cittadine exercised and settled 5,254 restricted stock units on June 30, 2026, receiving 5,254 shares of common stock.

Rhea-AI Filing Summary

Monopar Therapeutics Chief Operating Officer Andrew Cittadine exercised and settled 5,254 restricted stock units on June 30, 2026, receiving 5,254 shares of common stock. 2,309 shares were withheld by the company at $92.59 per share to cover withholding taxes. Following these transactions, he directly owns 55,614 shares of Monopar common stock. The restricted stock units come from multi-year grants that vest in quarterly installments through December 2029.

Insider Trade Summary

5,254 shares exercised/converted

Exercise 3 txns

Insider Cittadine Andrew

Role Chief Operating Officer

Type	Security	Shares	Price	Value
Exercise	Restricted Stock Unit	5,254	$0.00	$0.00
Exercise	Common Stock	5,254	$0.00	$0.00
Exercise Price or Tax Liability	Common Stock	2,309	$92.59	$214K

Holdings After Transaction: Restricted Stock Unit — 39,499 contracts (Direct); Common Stock — 55,614 shares (Direct)

Footnotes (5)

1. F1. Represents shares acquired on vesting and settlement of restricted stock units.
2. F2. Represents shares withheld by the issuer to pay for the applicable withholding tax due upon vesting of restricted stock units.
3. F3. On February 1, 2023, the reporting person was granted 15,647 restricted stock units, vesting 6/48ths (1,956 shares) on June 30, 2023, and 3/48ths (978 shares) every 3 months thereafter until the RSU is fully vested on December 31, 2026. Each restricted stock unit represents a contingent right to receive one share of common stock of the Issuer. Disposed of restricted stock units were surrendered in exchange for issuance of common stock upon vesting and settlement.
4. F4. On March 4, 2025, the reporting person was granted 40,581 restricted stock units, vesting 6/48ths (5,073 shares) on June 30, 2025, and 3/48ths (2,536 shares) every 3 months thereafter until the RSU is fully vested on December 31, 2028. Each restricted stock unit represents a contingent right to receive one share of common stock of the Issuer. Disposed of restricted stock units were surrendered in exchange for issuance of common stock upon vesting and settlement.
5. F5. On December 2, 2025, the reporting person was granted 13,919 restricted stock units, vesting 6/48ths (1,740) on June 30, 2026, and 3/48ths (870 shares) every 3 months thereafter until the RSU is fully vested on December 31, 2029. Each restricted stock unit represents a contingent right to receive one share of common stock of the Issuer. Disposed of restricted stock units were surrendered in exchange for issuance of common stock upon vesting and settlement.

Key Figures

RSUs exercised/settled: 5,254 units Shares withheld for taxes: 2,309 shares Withholding share value: $92.59 per share +4 more

7 metrics

RSUs exercised/settled 5,254 units Restricted stock units exercised and settled into common stock on June 30, 2026

Shares withheld for taxes 2,309 shares Common shares withheld by issuer to cover withholding tax on RSU vesting

Withholding share value $92.59 per share Per-share value used for shares withheld to satisfy tax obligations

Direct common stock holdings 55,614 shares Direct Monopar common stock owned by COO after reported transactions

2023 RSU grant 15,647 units RSUs granted February 1, 2023, vesting through December 31, 2026

2025 RSU grant 40,581 units RSUs granted March 4, 2025, vesting through December 31, 2028

2025 year-end RSU grant 13,919 units RSUs granted December 2, 2025, vesting through December 31, 2029

Key Terms

Restricted Stock Unit, withholding tax, contingent right, vesting

4 terms

Restricted Stock Unit financial

"Represents shares acquired on vesting and settlement of restricted stock units."

A restricted stock unit is a promise from a company to give an employee shares of stock after certain conditions are met, like staying with the company for a set amount of time. It’s like earning a bonus that turns into company stock once you’ve proven your commitment, making it a way to motivate and reward employees.

withholding tax financial

"shares withheld by the issuer to pay for the applicable withholding tax due upon vesting"

Withholding tax is a government-required portion of a payment—such as dividends, interest, or salary—that the payer keeps back and sends directly to tax authorities before the recipient receives the money. For investors it reduces the cash they actually get and changes the after-tax return on an investment; rates and refund or credit rules vary by country and can materially affect comparisons between similar investments, like a cashier holding part of a bill to cover taxes.

contingent right financial

"Each restricted stock unit represents a contingent right to receive one share of common stock"

vesting financial

"RSU is fully vested on December 31, 2026"

Vesting is the process by which you earn full ownership of something, like company stock or a retirement benefit, over time. It’s like earning the right to keep a gift piece by piece the longer you stay with a company, making sure employees stay committed before they receive all the benefits.

FAQ

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

What insider activity did Monopar Therapeutics (MNPR) report for its COO?

Monopar’s COO, Andrew Cittadine, exercised and settled 5,254 restricted stock units, receiving the same number of common shares. As part of this vesting, shares were also withheld to satisfy withholding tax obligations.

How many Monopar Therapeutics (MNPR) shares were withheld for taxes?

In this Form 4, 2,309 shares of Monopar common stock were withheld by the issuer at a value of $92.59 per share to cover applicable withholding taxes related to the RSU vesting event.

How many Monopar Therapeutics (MNPR) shares does the COO now hold?

After the reported transactions, Monopar’s COO directly holds 55,614 shares of common stock. This figure reflects his post-transaction direct ownership as reported in the canonical holdings associated with the filing.

What RSU grants are described in this Monopar Therapeutics (MNPR) filing?

The filing describes RSU grants of 15,647, 40,581, and 13,919 units, each vesting over several years in quarterly installments through dates ranging from December 31, 2026 to December 31, 2029.

What does the 5,254-share RSU vesting mean for Monopar Therapeutics (MNPR)?

The vesting of 5,254 RSUs means the COO’s prior restricted units converted into 5,254 common shares. Some of these shares were then withheld for tax payments, while his remaining directly held shares increased accordingly.

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

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Accepted by SEC EDGAR 07/02/2026 - 07:37 PM Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

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:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Cittadine Andrew

(Last) (First) (Middle)

1000 SKOKIE BLVD SUITE 350

(Street)

WILMETTE ILLINOIS 60091

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
Monopar Therapeutics [ MNPR ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Operating Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/30/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	06/30/2026		M		5,254	A	(1)	57,923	D
Common Stock	06/30/2026		F		2,309(2)	D	$92.59	55,614	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Restricted Stock Unit	(1)	06/30/2026		M			5,254	(3)(4)(5)	(3)(4)(5)	Common Stock	5,254	$0	39,499	D

Explanation of Responses:

1. Represents shares acquired on vesting and settlement of restricted stock units.

2. Represents shares withheld by the issuer to pay for the applicable withholding tax due upon vesting of restricted stock units.

3. On February 1, 2023, the reporting person was granted 15,647 restricted stock units, vesting 6/48ths (1,956 shares) on June 30, 2023, and 3/48ths (978 shares) every 3 months thereafter until the RSU is fully vested on December 31, 2026. Each restricted stock unit represents a contingent right to receive one share of common stock of the Issuer. Disposed of restricted stock units were surrendered in exchange for issuance of common stock upon vesting and settlement.

4. On March 4, 2025, the reporting person was granted 40,581 restricted stock units, vesting 6/48ths (5,073 shares) on June 30, 2025, and 3/48ths (2,536 shares) every 3 months thereafter until the RSU is fully vested on December 31, 2028. Each restricted stock unit represents a contingent right to receive one share of common stock of the Issuer. Disposed of restricted stock units were surrendered in exchange for issuance of common stock upon vesting and settlement.

5. On December 2, 2025, the reporting person was granted 13,919 restricted stock units, vesting 6/48ths (1,740) on June 30, 2026, and 3/48ths (870 shares) every 3 months thereafter until the RSU is fully vested on December 31, 2029. Each restricted stock unit represents a contingent right to receive one share of common stock of the Issuer. Disposed of restricted stock units were surrendered in exchange for issuance of common stock upon vesting and settlement.

	/s/ Quan Vu, Attorney-in-fact	07/02/2026
	** Signature of Reporting Person	Date
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 4 (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 4: SEC 1474 (03-26)