Arthur J Klausner insider trades: Monopar Therapeutics (MNPR) stock sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where Arthur reports to the SEC

Open-market buys and sales
1 trade reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Dec 18, 2025 | MNPR | ↓ Sell | 5,121 | $67.15 | $344K | Direct | Dec 19, 2025 (1d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
Other MNPR insiders
Open-market trades in the last 12 months
About Arthur J Klausner's insider trades
Arthur J Klausner is a director at Monopar Therapeutics (MNPR). Since Dec 18, 2025, Arthur has reported no open-market purchases and 1 sale worth $344K on SEC Form 4. In the last 12 months: 1 sale ($344K).
Their filings also include option exercises (15 filings), grants and awards (7 filings), other transactions (1 filing). These aren't open-market trades and aren't counted above.
How to read insider trades
Officers, directors and owners of more than 10% of a company must report trades in its stock on SEC Form 4, usually within two business days. Purchases with their own money are the stronger signal: insiders sell for many reasons (taxes, diversification, a house), but buy for one. See every MNPR insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.