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Monopar Therapeutics CEO receives 9,801 vested shares

The reported post-transaction position included 83,602 restricted stock units and 62,815 common shares held by the Chandler D. Robinson Irrevocable Trust.

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Form Type
4

Rhea-AI Filing Summary

Monopar Therapeutics Chief Executive Officer Chandler Robinson reported 9,801 restricted stock units surrendered for 9,801 common shares upon vesting and settlement on September 30, 2026. The issuer withheld 4,344 shares at $79.67 per share for withholding taxes. His reported post-transaction balance was 83,602 restricted stock units; the filing also lists 62,815 common shares held by the Chandler D. Robinson Irrevocable Trust. No Rule 10b5-1 plan is reported.

Insider Robinson Chandler
Role Chief Executive Officer
Type Security Shares Price Value
Exercise Restricted Stock Unit F1, F4, F5, F6 9,801 $0.00 $0.00
Exercise Common Stock F1 9,801 -- --
Tax Withholding Common Stock F2 4,344 $79.67 $346K
holding Common Stock F3 -- -- --
Holdings After Transaction: Restricted Stock Unit — 83,602 contracts (Direct); Common Stock — 104,724 shares (Direct); Common Stock — 62,815 shares (Indirect, See Footnote)
Footnotes (6)
  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. Represents shares held by the Chandler D. Robinson Irrevocable Trust U/A dated May 20, 2020.
  4. F4. On February 1, 2023, the reporting person was granted 33,803 restricted stock units, vesting 6/48ths (4,225 shares) on June 30, 2023, and 3/48ths (2,113 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.
  5. F5. On March 4, 2025, the reporting person was granted 79,899 restricted stock units of which 6,002 shares vested immediately as of the grant date. The remaining 73,897 restricted stock units vest 6/48ths (9,237 shares) on June 30, 2025, and 3/48ths (4,619 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.
  6. F6. On December 2, 2025, the reporting person was granted 49,133 restricted stock units, vesting 6/48ths (6,142) on June 30, 2026, and 3/48ths (3,071 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.
Restricted stock units settled 9,801 shares Vested and settled on September 30, 2026
Shares withheld for taxes 4,344 shares Withheld upon vesting on September 30, 2026
Withholding share price $79.67 per share Shares withheld on September 30, 2026
Restricted stock units following transaction 83,602 restricted stock units Reported following the September 30, 2026 transaction
Trust-held common shares 62,815 shares Held by the Chandler D. Robinson Irrevocable Trust as of September 30, 2026
restricted stock units financial
"shares acquired on vesting and settlement of restricted stock units"
Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.
withholding tax financial
"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 technical
"represents a contingent right to receive one share"

FAQ

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

How many shares did MNPR CEO Chandler Robinson receive, and how many were withheld?

On September 30, 2026, 9,801 restricted stock units were settled for 9,801 common shares, and the issuer withheld 4,344 shares at $79.67 per share for applicable withholding tax. No Rule 10b5-1 plan is reported.

What is the vesting schedule for Chandler Robinson’s MNPR restricted stock units?

Three awards have separate schedules: 33,803 restricted stock units granted February 1, 2023, vest through December 31, 2026; 79,899 granted March 4, 2025, including 6,002 that vested immediately, vest through December 31, 2028; and 49,133 granted December 2, 2025, vest through December 31, 2029. Each unit represents a contingent right to one common share.

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

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Learn about SEC filing dates
SEC Form 4
FORM 4UNITED 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*
Robinson Chandler

(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)
XDirector10% Owner
XOfficer (give title below)Other (specify below)
Chief Executive Officer
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
09/30/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm 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)
CodeVAmount(A) or (D)Price
Common Stock09/30/2026M9,801A(1)109,068D
Common Stock09/30/2026F4,344(2)D$79.67104,724D
Common Stock62,815ISee Footnote(3)
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)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Restricted Stock Unit(1)09/30/2026M9,801 (4)(5)(6) (4)(5)(6)Common Stock9,801$083,602D
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. Represents shares held by the Chandler D. Robinson Irrevocable Trust U/A dated May 20, 2020.
4. On February 1, 2023, the reporting person was granted 33,803 restricted stock units, vesting 6/48ths (4,225 shares) on June 30, 2023, and 3/48ths (2,113 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.
5. On March 4, 2025, the reporting person was granted 79,899 restricted stock units of which 6,002 shares vested immediately as of the grant date. The remaining 73,897 restricted stock units vest 6/48ths (9,237 shares) on June 30, 2025, and 3/48ths (4,619 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.
6. On December 2, 2025, the reporting person was granted 49,133 restricted stock units, vesting 6/48ths (6,142) on June 30, 2026, and 3/48ths (3,071 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-fact10/02/2026
** 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 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)

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