Beth C. Seidenberg, a director at Kyverna Therapeutics ($KYTX), made one open market purchase of nearly $1 million in shares over the last year, with the latest on December 18, 2025. This ranks her 545th among nearly 5,000 insiders by purchase value, below the average of about $1.5 million across 3.3 transactions. She reported no open market sales.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dec. 18, 2025 | Kyverna Therapeutics, Inc. | $KYTX | SEIDENBERG BETH C | Director | P | Common Stock | 133333 | $7.50 | 4,673,891.0000 | 43,796,170 | 2.94% | 0.30% |
| June 6, 2025 | Sagimet Biosciences Inc. | $SGMT | SEIDENBERG BETH C | Director | A | Stock Option (Right to Buy) | 28522 | $0.00 | 28,522.0000 | 32,195,345 | 9999.99% | 0.09% |
| June 9, 2025 | Sagimet Biosciences Inc. | $SGMT | SEIDENBERG BETH C | Director | A | Stock Option (Right to Buy) | 32250 | $0.00 | 32,250.0000 | 32,195,345 | 9999.99% | 0.10% |
| May 29, 2025 | Kyverna Therapeutics, Inc. | $KYTX | SEIDENBERG BETH C | Not found | A | Stock Option (right to buy) | 65351 | $0.00 | 65,351.0000 | 43,214,918 | 9999.99% | 0.15% |
| May 29, 2025 | Kyverna Therapeutics, Inc. | $KYTX | SEIDENBERG BETH C | Not found | A | Common Stock | 16634 | $0.00 | 4,540,558.0000 | 43,214,918 | 0.37% | 0.04% |
| May 14, 2025 | Vera Therapeutics, Inc. | $VERA | SEIDENBERG BETH C | Not found | A | Stock Option (right to buy) | 14000 | $0.00 | 14,000.0000 | 63,748,290 | 9999.99% | 0.02% |
| Oct. 28, 2024 | Vera Therapeutics, Inc. | $VERA | SEIDENBERG BETH C | Not found | S | Class A Common Stock | 202 | $49.54 | 135,565.0000 | 0 | 0.15% | 0.00% |
| Oct. 28, 2024 | Vera Therapeutics, Inc. | $VERA | SEIDENBERG BETH C | Not found | S | Class A Common Stock | 14798 | $48.01 | 135,767.0000 | 0 | 9.83% | 0.00% |
| Sept. 18, 2024 | Vera Therapeutics, Inc. | $VERA | SEIDENBERG BETH C | Not found | S | Class A Common Stock | 1476 | $42.00 | 150,565.0000 | 0 | 0.97% | 0.00% |
| Sept. 19, 2024 | Vera Therapeutics, Inc. | $VERA | SEIDENBERG BETH C | Not found | S | Class A Common Stock | 13823 | $42.31 | 150,565.0000 | 0 | 8.41% | 0.00% |
| Sept. 18, 2024 | Vera Therapeutics, Inc. | $VERA | SEIDENBERG BETH C | Not found | S | Class A Common Stock | 1177 | $42.01 | 164,388.0000 | 0 | 0.71% | 0.00% |
| June 5, 2024 | Sagimet Biosciences Inc. | $SGMT | SEIDENBERG BETH C | Director | A | Stock Option (Right to Buy) | 51459 | $0.00 | 51,459.0000 | 29,039,427 | 9999.99% | 0.18% |
| May 23, 2024 | Progyny, Inc. | $PGNY | SEIDENBERG BETH C | Director | A | Stock Option (Right to Buy) | 26926 | $0.00 | 26,926.0000 | 96,348,522 | 9999.99% | 0.03% |
| May 23, 2024 | Progyny, Inc. | $PGNY | SEIDENBERG BETH C | Director | A | Common Stock | 7206 | $0.00 | 5,345,937.0000 | 96,348,522 | 0.13% | 0.01% |
| May 15, 2024 | Vera Therapeutics, Inc. | $VERA | SEIDENBERG BETH C | Not found | A | Stock Option (right to buy) | 14000 | $0.00 | 14,000.0000 | 0 | 9999.99% | 0.00% |
| Feb. 12, 2024 | Kyverna Therapeutics, Inc. | $KYTX | SEIDENBERG BETH C | Not found | C | Common Stock | 3787940 | $0.00 | 3,787,940.0000 | 0 | 9999.99% | 0.00% |
| Feb. 12, 2024 | Kyverna Therapeutics, Inc. | $KYTX | SEIDENBERG BETH C | Not found | C | Common Stock | 735984 | $0.00 | 735,984.0000 | 0 | 9999.99% | 0.00% |
| Feb. 12, 2024 | Kyverna Therapeutics, Inc. | $KYTX | SEIDENBERG BETH C | Not found | C | Series A-1 Redeemable Convertible Preferred Stock | 4401771 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| Feb. 12, 2024 | Kyverna Therapeutics, Inc. | $KYTX | SEIDENBERG BETH C | Not found | C | Series A-2 Redeemable Convertible Preferred Stock | 8830901 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| Feb. 12, 2024 | Kyverna Therapeutics, Inc. | $KYTX | SEIDENBERG BETH C | Not found | C | Series B Redeemable Convertible Preferred Stock | 4006624 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| Feb. 12, 2024 | Kyverna Therapeutics, Inc. | $KYTX | SEIDENBERG BETH C | Not found | C | Series B Redeemable Convertible Preferred Stock | 3349538 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| June 23, 2023 | Progyny, Inc. | $PGNY | SEIDENBERG BETH C | Director | J | Common Stock | 10284 | $0.00 | 5,338,731.0000 | 93,301,156 | 0.19% | 0.01% |
| June 23, 2023 | Progyny, Inc. | $PGNY | SEIDENBERG BETH C | Director | J | Common Stock | 17162 | $0.00 | 5,338,731.0000 | 93,301,156 | 0.32% | 0.02% |
| June 9, 2023 | Progyny, Inc. | $PGNY | SEIDENBERG BETH C | Director | J | Common Stock | 264608 | $0.00 | 518,440.0000 | 93,301,156 | 104.25% | 0.28% |
| June 9, 2023 | Progyny, Inc. | $PGNY | SEIDENBERG BETH C | Director | J | Common Stock | 247446 | $0.00 | 270,994.0000 | 93,301,156 | 47.73% | 0.27% |
| June 9, 2023 | Progyny, Inc. | $PGNY | SEIDENBERG BETH C | Director | J | Common Stock | 6656 | $0.00 | 270,994.0000 | 93,301,156 | 2.52% | 0.01% |
| June 9, 2023 | Progyny, Inc. | $PGNY | SEIDENBERG BETH C | Director | J | Common Stock | 1398900 | $0.00 | 5,328,447.0000 | 93,301,156 | 20.79% | 1.50% |
| May 31, 2023 | Atara Biotherapeutics, Inc. | $ATRA | SEIDENBERG BETH C | Not found | A | Common Stock | 57000 | $0.00 | 1,992,733.0000 | 0 | 2.94% | 0.00% |
| May 31, 2023 | Atara Biotherapeutics, Inc. | $ATRA | SEIDENBERG BETH C | Not found | A | Non-Qualified Stock Option (Right to Buy) | 79500 | $0.00 | 79,500.0000 | 0 | 9999.99% | 0.00% |
| May 24, 2023 | Progyny, Inc. | $PGNY | SEIDENBERG BETH C | Director | A | Common Stock | 5116 | $0.00 | 6,720,691.0000 | 93,301,156 | 0.08% | 0.01% |
| May 24, 2023 | Progyny, Inc. | $PGNY | SEIDENBERG BETH C | Director | A | Stock Option (Right to Buy) | 19709 | $0.00 | 19,709.0000 | 93,301,156 | 9999.99% | 0.02% |
| May 24, 2023 | Progyny, Inc. | $PGNY | SEIDENBERG BETH C | Director | A | Stock Option (Right to Buy) | 3261 | $19.93 | 3,261.0000 | 93,301,156 | 9999.99% | 0.00% |
| May 10, 2023 | Vera Therapeutics, Inc. | $VERA | SEIDENBERG BETH C | Director | A | Stock Option (right to buy) | 20000 | $0.00 | 20,000.0000 | 0 | 9999.99% | 0.00% |
| March 30, 2023 | Vera Therapeutics, Inc. | $VERA | SEIDENBERG BETH C | Director | P | Class A Common Stock | 2300 | $7.24 | 1,949,295.0000 | 0 | 0.12% | 0.00% |
| March 28, 2023 | Vera Therapeutics, Inc. | $VERA | SEIDENBERG BETH C | Director | P | Class A Common Stock | 23908 | $7.24 | 1,946,995.0000 | 0 | 1.24% | 0.00% |
| March 27, 2023 | Vera Therapeutics, Inc. | $VERA | SEIDENBERG BETH C | Director | P | Class A Common Stock | 1633 | $7.24 | 1,923,087.0000 | 0 | 0.08% | 0.00% |
| March 24, 2023 | Vera Therapeutics, Inc. | $VERA | SEIDENBERG BETH C | Director | P | Class A Common Stock | 1833 | $7.24 | 1,921,454.0000 | 0 | 0.10% | 0.00% |
| March 20, 2023 | Vera Therapeutics, Inc. | $VERA | SEIDENBERG BETH C | Director | P | Class A Common Stock | 15252 | $7.21 | 1,919,621.0000 | 0 | 0.80% | 0.00% |
| March 17, 2023 | Vera Therapeutics, Inc. | $VERA | SEIDENBERG BETH C | Director | P | Class A Common Stock | 74045 | $7.12 | 1,904,369.0000 | 0 | 4.05% | 0.00% |
| March 16, 2023 | Vera Therapeutics, Inc. | $VERA | SEIDENBERG BETH C | Director | P | Class A Common Stock | 60097 | $7.09 | 1,830,324.0000 | 0 | 3.39% | 0.00% |
| March 15, 2023 | Vera Therapeutics, Inc. | $VERA | SEIDENBERG BETH C | Director | P | Class A Common Stock | 32844 | $7.12 | 1,770,227.0000 | 0 | 1.89% | 0.00% |
| March 10, 2023 | Vera Therapeutics, Inc. | $VERA | SEIDENBERG BETH C | Director | P | Class A Common Stock | 48003 | $7.16 | 1,737,383.0000 | 0 | 2.84% | 0.00% |
| March 3, 2023 | Vera Therapeutics, Inc. | $VERA | SEIDENBERG BETH C | Director | P | Class A Common Stock | 1000 | $7.25 | 1,689,380.0000 | 0 | 0.06% | 0.00% |
| March 2, 2023 | Vera Therapeutics, Inc. | $VERA | SEIDENBERG BETH C | Director | P | Class A Common Stock | 23378 | $7.24 | 1,688,380.0000 | 0 | 1.40% | 0.00% |
| March 1, 2023 | Vera Therapeutics, Inc. | $VERA | SEIDENBERG BETH C | Director | P | Class A Common Stock | 100 | $7.25 | 1,665,002.0000 | 0 | 0.01% | 0.00% |
| Feb. 23, 2023 | Vera Therapeutics, Inc. | $VERA | SEIDENBERG BETH C | Director | P | Class A Common Stock | 200 | $7.24 | 1,664,902.0000 | 0 | 0.01% | 0.00% |
| Feb. 13, 2023 | Vera Therapeutics, Inc. | $VERA | SEIDENBERG BETH C | Director | P | Class A Common Stock | 10072 | $7.20 | 1,664,702.0000 | 0 | 0.61% | 0.00% |
| Feb. 9, 2023 | Vera Therapeutics, Inc. | $VERA | SEIDENBERG BETH C | Director | P | Class A Common Stock | 400 | $7.25 | 1,654,630.0000 | 0 | 0.02% | 0.00% |
| Feb. 8, 2023 | Vera Therapeutics, Inc. | $VERA | SEIDENBERG BETH C | Director | P | Class A Common Stock | 45357 | $7.22 | 1,654,230.0000 | 0 | 2.82% | 0.00% |
| Feb. 6, 2023 | Vera Therapeutics, Inc. | $VERA | SEIDENBERG BETH C | Director | P | Class A Common Stock | 131602 | $7.03 | 1,520,917.0000 | 0 | 9.47% | 0.00% |
| Feb. 3, 2023 | Vera Therapeutics, Inc. | $VERA | SEIDENBERG BETH C | Director | P | Class A Common Stock | 46163 | $7.24 | 1,389,315.0000 | 0 | 3.44% | 0.00% |
| Feb. 7, 2023 | Vera Therapeutics, Inc. | $VERA | SEIDENBERG BETH C | Director | P | Class A Common Stock | 87956 | $7.08 | 1,608,873.0000 | 0 | 5.78% | 0.00% |