Arthur J. Klausner, a director at Monopar Therapeutics (MNPR), made two open market sales of company shares in the past year, totaling $344 thousand. His most recent sale occurred on December 18, 2025. These transactions rank 7,290th out of 11,678 insiders by sale value, well below the average of $8.6 million across 6.4 transactions per insider. Klausner reported no open market purchases during this period.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dec. 18, 2025 | Monopar Therapeutics | $MNPR | KLAUSNER ARTHUR J | Director | S | Common Stock | 461 | $68.09 | 8,762.0000 | 6,662,930 | 5.00% | 0.01% |
| Dec. 18, 2025 | Monopar Therapeutics | $MNPR | KLAUSNER ARTHUR J | Director | S | Common Stock | 4660 | $67.06 | 9,223.0000 | 6,662,930 | 33.57% | 0.07% |
| Dec. 16, 2025 | Monopar Therapeutics | $MNPR | KLAUSNER ARTHUR J | Director | J | Common Stock | 7710 | $0.00 | 13,883.0000 | 6,662,930 | 124.90% | 0.12% |
| Dec. 2, 2025 | Monopar Therapeutics | $MNPR | KLAUSNER ARTHUR J | Director | A | Stock Options | 2924 | $0.00 | 2,924.0000 | 6,662,930 | 9999.99% | 0.04% |
| March 4, 2025 | Monopar Therapeutics | $MNPR | KLAUSNER ARTHUR J | Director | A | Stock Options | 11365 | $0.00 | 11,365.0000 | 6,102,560 | 9999.99% | 0.19% |
| Dec. 31, 2023 | Monopar Therapeutics | $MNPR | KLAUSNER ARTHUR J | Director | M | Common Stock | 2533 | $0.00 | 3,086,257.1200 | 0 | 0.08% | 0.00% |
| Dec. 31, 2023 | Monopar Therapeutics | $MNPR | KLAUSNER ARTHUR J | Director | M | Restricted Stock Units | 2533 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| Sept. 30, 2023 | Monopar Therapeutics | $MNPR | KLAUSNER ARTHUR J | Director | M | Common Stock | 2533 | $0.00 | 3,083,724.1200 | 0 | 0.08% | 0.00% |
| Sept. 30, 2023 | Monopar Therapeutics | $MNPR | KLAUSNER ARTHUR J | Director | M | Restricted Stock Units | 2533 | $0.00 | 2,533.0000 | 0 | 50.00% | 0.00% |
| June 30, 2023 | Monopar Therapeutics | $MNPR | KLAUSNER ARTHUR J | Director | M | Common Stock | 2534 | $0.00 | 3,081,191.1200 | 0 | 0.08% | 0.00% |
| June 30, 2023 | Monopar Therapeutics | $MNPR | KLAUSNER ARTHUR J | Director | M | Restricted Stock Units | 2534 | $0.00 | 5,066.0000 | 0 | 33.34% | 0.00% |
| March 31, 2023 | Monopar Therapeutics | $MNPR | KLAUSNER ARTHUR J | Director | M | Restricted Stock Units | 2533 | $0.00 | 7,600.0000 | 0 | 25.00% | 0.00% |
| March 31, 2023 | Monopar Therapeutics | $MNPR | KLAUSNER ARTHUR J | Director | M | Common Stock | 2533 | $0.00 | 3,078,657.1200 | 0 | 0.08% | 0.00% |
| Feb. 1, 2023 | Monopar Therapeutics | $MNPR | KLAUSNER ARTHUR J | Director | A | Restricted Stock Units | 10133 | $0.00 | 10,133.0000 | 0 | 9999.99% | 0.00% |
| Feb. 1, 2023 | Monopar Therapeutics | $MNPR | KLAUSNER ARTHUR J | Director | A | Stock Options | 13930 | $0.00 | 13,930.0000 | 0 | 9999.99% | 0.00% |
| Dec. 31, 2022 | Monopar Therapeutics | $MNPR | KLAUSNER ARTHUR J | Director | M | Common Stock | 2859 | $0.00 | 3,076,124.1200 | 0 | 0.09% | 0.00% |
| Dec. 31, 2022 | Monopar Therapeutics | $MNPR | KLAUSNER ARTHUR J | Director | M | Restricted Stock Units | 2859 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |