🕵️ Kyverna Therapeutics, Inc. ($KYTX)
SEC insider & ownership activity, last 12 months · CIK 1994702 · every row links its SEC filing
Over the last 12 months insiders sold $293K against $2.0M of open-market buying. Beth C. Seidenberg bought $1000K in discretionary trades (Dec). No red-flag 8-Ks in the window.
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Monthly net open-market insider flow, last 12 months (up = net buying)
Insider flow
2 buyers, $2.0M (2 lots) · 1 seller, $293K (1 lots)
| Insider | Buys | Bought | Sells | Sold | Last |
|---|---|---|---|---|---|
| Beth C. Seidenberg | 1 | $1000K | 0 | – | Dec 18, 2025 |
| Westlake Biopartners Opportunity Fund I, L.P. | 1 | $1000K | 0 | – | Dec 18, 2025 |
| Karen Walker | 0 | – | 1 | $293K | Dec 15, 2025 |
5%+ holders
| Holder | Stake | Class | Schedule | Event | |
|---|---|---|---|---|---|
| DR. BETH C. Seidenberg ("SEIDENBERG") | 7.8% | 13G | Feb 6, 2026 | filing ↗ | |
| Gordonmd Global Investments LP | 7.0% | 13G | Nov 17, 2025 | filing ↗ | |
| Craig D. Gordon | 7.0% | 13G | Nov 17, 2025 | filing ↗ | |
| Gordonmd Global Investments GP LLC | 7.0% | 13G | Nov 17, 2025 | filing ↗ | |
| Westlake Biopartners Fund I, L.P. ("WESTLAKE Fund I") | 6.3% | 13G | Feb 6, 2026 | filing ↗ | |
| Westlake Biopartners GP I, LLC ("WESTLAKE GP I") | 6.3% | 13G | Feb 6, 2026 | filing ↗ | |
| Gordonmd LONG Biased Master Fund LP | 6.2% | 13G | Nov 17, 2025 | filing ↗ | |
| Gordonmd LONG Biased GP LLC | 6.2% | 13G | Nov 17, 2025 | filing ↗ | |
| Michael P. Rubin | 6.1% | 13G | Feb 17, 2026 | filing ↗ | |
| BAIN Capital Life Sciences Opportunities III, LP | 5.4% | 13G | Feb 17, 2026 | filing ↗ | |
| Blackrock, Inc. | 5.1% | 13G | Jul 29, 2026 | filing ↗ |
Planned insider sales (Form 144)
| Seller | Planned | Approx. sale date | |
|---|---|---|---|
| Karen Walker | $95K | Apr 17, 2026 | filing ↗ |
| Karen Walker | $23K | Apr 14, 2026 | filing ↗ |
| Daniel Spiegelman | $163K | Apr 7, 2026 | filing ↗ |
| Daniel Spiegelman | $140K | Mar 31, 2026 | filing ↗ |
| Karen Walker | $211K | Dec 15, 2025 | filing ↗ |
Material events (8-K)
| Item | Event date | |
|---|---|---|
| Material agreement (1.01) | Jul 23, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Jul 23, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jul 23, 2026 | filing ↗ |
| Material agreement (1.01) | Jul 8, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jul 8, 2026 | filing ↗ |
| Shareholder vote (5.07) | May 27, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | May 27, 2026 | filing ↗ |
| Officer/director changes (5.02) | May 14, 2026 | filing ↗ |
| Other events (8.01) | May 14, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | May 14, 2026 | filing ↗ |
| Earnings (2.02) | May 12, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | May 12, 2026 | filing ↗ |
| Other events (8.01) | May 4, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | May 4, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Apr 22, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Apr 22, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Apr 21, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Apr 21, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Apr 20, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Apr 20, 2026 | filing ↗ |
| Earnings (2.02) | Mar 26, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Mar 26, 2026 | filing ↗ |
| Officer/director changes (5.02) | Feb 24, 2026 | filing ↗ |
| Other events (8.01) | Feb 24, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Feb 24, 2026 | filing ↗ |
| Officer/director changes (5.02) | Jan 29, 2026 | filing ↗ |
| Other events (8.01) | Jan 29, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jan 29, 2026 | filing ↗ |
| Earnings (2.02) | Jan 8, 2026 | filing ↗ |
| Officer/director changes (5.02) | Jan 8, 2026 | filing ↗ |