Walter V Klemp insider trades: Moleculin Biotech (MBRX) stock buys and sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where Walter reports to the SEC
Open-market buys and sales
7 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Jun 23, 2025 | MBRX | ↑ Buy | 675,675 | $0.37 | $250K | Direct | Jun 23, 2025 (0d) |
| Dec 26, 2023 | MBRX | ↑ Buy | 188,404 | $0.69 | $130K | Direct | Dec 27, 2023 (1d) |
| Nov 25, 2022 | MBRX | ↑ Buy | 45,000 | $1.28 | $58K | Direct | Nov 28, 2022 (3d) |
| Nov 21, 2022 | MBRX | ↑ Buy | 22,500 | $1.15 | $26K | Direct | Nov 23, 2022 (2d) |
| Nov 17, 2022 | MBRX | ↑ Buy | 109,955 | $0.98 | $108K | Direct | Nov 18, 2022 (1d) |
| Aug 16, 2017 | MBRX | ↓ Sell | 100,000 | $1.70 | $170K | Direct | Aug 18, 2017 (2d) |
| May 11, 2017 | MBRX | ↑ Buy | 12,000 | $0.81 | $10K | Direct | May 12, 2017 (1d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
About Walter V Klemp's insider trades
Walter V Klemp is CEO and President at Moleculin Biotech (MBRX). Since May 11, 2017, Walter has reported 6 open-market purchases worth $581K and 1 sale worth $170K on SEC Form 4. There have been no open-market trades in the last 12 months.
Their filings also include option exercises (20 filings), shares withheld for taxes (20 filings), grants and awards (16 filings), shares returned to the company (2 filings). 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 MBRX insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.