Kosacz Barbara has filed 8 insider transactions across 3 companies since May 2023.
Most recent transaction: a grant/award of 28000 shares of LeonaBio, Inc. ($LONA) on April 09, 2026.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| April 9, 2026 | LeonaBio, Inc. | $LONA | Kosacz Barbara | Not found | A | Stock Option (Right to Buy) | 28000 | $0.00 | 28,000.0000 | 3,943,887 | 9999.99% | 0.71% |
| May 30, 2025 | LeonaBio, Inc. | $LONA | Kosacz Barbara | Not found | A | Stock Option (Right to Buy) | 20900 | $0.00 | 20,900.0000 | 39,042,445 | 9999.99% | 0.05% |
| May 21, 2025 | XOMA Royalty Corp | $XOMA | Kosacz Barbara | Not found | A | Common Stock | 5971 | $0.00 | 5,971.0000 | 17,781,000 | 9999.99% | 0.03% |
| May 21, 2025 | XOMA Royalty Corp | $XOMA | Kosacz Barbara | Not found | A | Common Stock | 5971 | $0.00 | 5,971.0000 | 17,781,000 | 9999.99% | 0.03% |
| May 24, 2024 | LeonaBio, Inc. | $LONA | Kosacz Barbara | Not found | A | Stock Option (Right to Buy) | 20900 | $0.00 | 20,900.0000 | 0 | 9999.99% | 0.00% |
| May 15, 2024 | XOMA Royalty Corp | $XOMA | Kosacz Barbara | Not found | A | Non-Qualified Share Option (right to buy) | 9763 | $0.00 | 9,763.0000 | 11,580,000 | 9999.99% | 0.08% |
| Feb. 14, 2024 | CERO THERAPEUTICS HOLDINGS, INC. | $CERO | Kosacz Barbara | Director | J | Class A Common Stock | 5828 | $0.00 | 5,828.0000 | 292 | 9999.99% | 100.00% |
| May 19, 2023 | LeonaBio, Inc. | $LONA | Kosacz Barbara | Director | A | Stock Option (Right to Buy) | 20900 | $0.00 | 20,900.0000 | 0 | 9999.99% | 0.00% |