Open Insider Trading Activity for Zenas Biopharma, Inc. Chief Executive Officer Moulder Leon O Jr
31-day price and insider activity (up to 2 years)
Daily candles with triangles for the buy and sale transactions shown below. Scroll left or zoom out to load earlier candles (up to 2 years).
▲ Insider buy
▼ Insider sale
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| Ticker | Filing Date | Transaction Date | Company | Insider | Title | Transaction | Trade Count | Shares | Avg. Price | Total Value | Position Size Change | SEC Filing |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Unexplained: transactions without an ESPP, DRIP, 10b5-1, tax liability, or Explained M/S tag. ZBIO | 2026-05-18 | 2026-05-18 | Zenas Biopharma, Inc. | Moulder Leon O Jr | Chief Executive Officer | Buy | 1 | 60,000 | $16.88 | $1,012,800.00 | 61.90% | View Filing |
| Unexplained: transactions without an ESPP, DRIP, 10b5-1, tax liability, or Explained M/S tag. ZBIO | 2026-03-31 | 2026-03-31 | Zenas Biopharma, Inc. | Moulder Leon O Jr | Chief Executive Officer | Buy | 2 | 54,000 | $18.91 | $1,021,140.00 | 1.58% | View Filing |
| Unexplained: transactions without an ESPP, DRIP, 10b5-1, tax liability, or Explained M/S tag. ZBIO | 2026-01-09 | 2026-01-09 | Zenas Biopharma, Inc. | Moulder Leon O Jr | Chief Executive Officer | Buy | 3 | 100,000 | $16.39 | $1,639,000.00 | 9.72% | View Filing |
| Unexplained: transactions without an ESPP, DRIP, 10b5-1, tax liability, or Explained M/S tag. ZBIO | 2025-10-09 | 2025-10-07 | Zenas Biopharma, Inc. | Moulder Leon O Jr | Officer | Buy | 1 | 36,928 | $20.85 | $769,948.80 | 100.00% | View Filing |