SCHEDULE 13D/A

Monopar Therapeutics Inc

Common Stock, $0.001 par value · CUSIP: 61023L207

Event date: 2025-09-24

Reporting persons may disclose overlapping interests. Their amounts are shown individually and are not added into a filing total.

Filing-level shares

Unavailable

Percent of class

Unavailable

• Tactic Pharma LLCReported CIK 0001727357

  Shares: 272,026.00 · Class: 4.1%

• Mazar Andrew PaulReported CIK 0001727393

  Shares: 272,026.00 · Class: 4.1%

• Robinson ChandlerReported CIK 0001727334

  Shares: 506,199.00 · Class: 7.5%

• O'Halloran Thomas V.Reported CIK 0001727481

  Shares: 272,026.00 · Class: 4.1%

• Brown Michael JReported CIK 0001035909

  Shares: 338,067.00 · Class: 5.1%

Amounts are as disclosed in this filing. Schedule type alone does not establish investment intent.