Mark Eisner, EVP and Chief Medical Officer of Vir Biotechnology ($VIR), sold shares on the open market five times over the past year, totaling over $106,000. His most recent sale occurred on February 25, 2026. These transactions rank 9,476th among over 11,700 insiders in our database by sale value, well below the average of $8.6 million across 6.4 transactions per insider. Eisner made 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Feb. 25, 2026 | Vir Biotechnology, Inc. | $VIR | Eisner Mark | EVP and Chief Medical Officer | S | Common Stock | 1889 | $9.82 | 154,024.0000 | 139,125,032 | 1.21% | 0.00% |
| Feb. 24, 2026 | Vir Biotechnology, Inc. | $VIR | Eisner Mark | EVP and Chief Medical Officer | S | Common Stock | 1616 | $9.53 | 155,913.0000 | 139,125,032 | 1.03% | 0.00% |
| Feb. 23, 2026 | Vir Biotechnology, Inc. | $VIR | Eisner Mark | EVP and Chief Medical Officer | S | Common Stock | 2089 | $7.45 | 157,529.0000 | 139,125,032 | 1.31% | 0.00% |
| Feb. 22, 2026 | Vir Biotechnology, Inc. | $VIR | Eisner Mark | EVP and Chief Medical Officer | A | Common Stock | 55000 | $0.00 | 159,618.0000 | 139,125,032 | 52.57% | 0.04% |
| Feb. 21, 2026 | Zura Bio Ltd | $ZURA | Eisner Mark | Not found | A | Share Option (Right to Buy) | 37812 | $0.00 | 37,812.0000 | 94,564,632 | 9999.99% | 0.04% |
| Feb. 22, 2026 | Vir Biotechnology, Inc. | $VIR | Eisner Mark | EVP and Chief Medical Officer | A | Stock Option (Right to Buy) | 110000 | $0.00 | 110,000.0000 | 139,125,032 | 9999.99% | 0.08% |
| July 15, 2025 | Vir Biotechnology, Inc. | $VIR | Eisner Mark | EVP and Chief Medical Officer | S | Common Stock | 6796 | $5.47 | 108,204.0000 | 137,143,286 | 5.91% | 0.00% |
| July 17, 2025 | Vir Biotechnology, Inc. | $VIR | Eisner Mark | EVP and Chief Medical Officer | S | Common Stock | 3586 | $5.47 | 104,618.0000 | 137,143,286 | 3.31% | 0.00% |
| Feb. 22, 2025 | Vir Biotechnology, Inc. | $VIR | Eisner Mark | EVP and Chief Medical Officer | A | Common Stock | 40000 | $0.00 | 115,000.0000 | 137,143,286 | 53.33% | 0.03% |
| Feb. 22, 2025 | Vir Biotechnology, Inc. | $VIR | Eisner Mark | EVP and Chief Medical Officer | A | Stock Option (Right to Buy) | 80000 | $0.00 | 80,000.0000 | 137,143,286 | 9999.99% | 0.06% |
| July 15, 2024 | Vir Biotechnology, Inc. | $VIR | Eisner Mark | EVP and Chief Medical Officer | A | Common Stock | 75000 | $0.00 | 75,000.0000 | 0 | 9999.99% | 0.00% |
| July 15, 2024 | Vir Biotechnology, Inc. | $VIR | Eisner Mark | EVP and Chief Medical Officer | A | Stock Option (Right to Buy) | 150000 | $0.00 | 150,000.0000 | 0 | 9999.99% | 0.00% |
| Sept. 6, 2023 | KYNTRA BIO, INC. | $KYNB | Eisner Mark | EVP, Chief Medical Officer | F | Common Stock | 1860 | $0.96 | 159,917.0000 | 0 | 1.15% | 0.00% |
| Sept. 1, 2023 | KYNTRA BIO, INC. | $KYNB | Eisner Mark | EVP, Chief Medical Officer | F | Common Stock | 1085 | $1.06 | 161,777.0000 | 0 | 0.67% | 0.00% |
| June 7, 2023 | KYNTRA BIO, INC. | $KYNB | Eisner Mark | EVP, Chief Medical Officer | S | Common Stock | 2042 | $17.04 | 162,862.0000 | 0 | 1.24% | 0.00% |
| June 2, 2023 | KYNTRA BIO, INC. | $KYNB | Eisner Mark | EVP, Chief Medical Officer | S | Common Stock | 1090 | $18.83 | 164,904.0000 | 0 | 0.66% | 0.00% |
| April 4, 2023 | KYNTRA BIO, INC. | $KYNB | Eisner Mark | Chief Medical Officer | S | Common Stock | 9182 | $18.78 | 165,994.0000 | 0 | 5.24% | 0.00% |
| March 8, 2023 | KYNTRA BIO, INC. | $KYNB | Eisner Mark | Chief Medical Officer | A | Common Stock | 12451 | $0.00 | 185,316.0000 | 0 | 7.20% | 0.00% |
| March 10, 2023 | KYNTRA BIO, INC. | $KYNB | Eisner Mark | Chief Medical Officer | S | Common Stock | 6255 | $20.20 | 175,176.0000 | 0 | 3.45% | 0.00% |
| March 8, 2023 | KYNTRA BIO, INC. | $KYNB | Eisner Mark | Chief Medical Officer | A | Common Stock | 7732 | $0.00 | 172,865.0000 | 0 | 4.68% | 0.00% |
| March 8, 2023 | KYNTRA BIO, INC. | $KYNB | Eisner Mark | Chief Medical Officer | S | Common Stock | 7363 | $21.16 | 165,133.0000 | 0 | 4.27% | 0.00% |
| March 10, 2023 | KYNTRA BIO, INC. | $KYNB | Eisner Mark | Chief Medical Officer | S | Common Stock | 3885 | $20.20 | 181,431.0000 | 0 | 2.10% | 0.00% |
| March 2, 2023 | KYNTRA BIO, INC. | $KYNB | Eisner Mark | Chief Medical Officer | S | Common Stock | 1187 | $21.87 | 172,496.0000 | 0 | 0.68% | 0.00% |
| Feb. 21, 2023 | KYNTRA BIO, INC. | $KYNB | Eisner Mark | Chief Medical Officer | A | Stock Option (Right to Buy) | 55000 | $0.00 | 55,000.0000 | 0 | 9999.99% | 0.00% |
| Feb. 21, 2023 | KYNTRA BIO, INC. | $KYNB | Eisner Mark | Chief Medical Officer | A | Common Stock | 32500 | $0.00 | 173,683.0000 | 0 | 23.02% | 0.00% |