🕵️ Forte Biosciences, Inc. ($FBRX)
SEC insider & ownership activity, last 12 months · CIK 1419041 · every row links its SEC filing
Over the last 12 months insiders bought $255K with no open-market selling against it. Antony A. Riley bought $255K in discretionary trades (Dec). Janus Henderson Group Ltd. added 2.5% → 9.3%. One red-flag 8-K in the window: Delisting notice (3.01), Aug 27, 2026.
Monthly net open-market insider flow, last 12 months (up = net buying)
Insider flow
1 buyer, $255K (1 lots) · 0 sellers, $0 (0 lots)
| Insider | Buys | Bought | Sells | Sold | Last |
|---|---|---|---|---|---|
| Antony A. Riley | 1 | $255K | 0 | – | Dec 30, 2025 |
5%+ holders
| Holder | Stake | Class | Schedule | Event | |
|---|---|---|---|---|---|
| Tybourne Capital Management (HK) Ltd | 10.0% | 13G | Aug 4, 2025 | filing ↗ | |
| Tybourne Strategic Opportunities GP II Limited | 10.0% | 13G | Aug 4, 2025 | filing ↗ | |
| Tybourne Capital Management Ltd | 10.0% | 13G | Aug 4, 2025 | filing ↗ | |
| Tybourne Kesari Ltd | 10.0% | 13G | Aug 4, 2025 | filing ↗ | |
| Krishnan Viswanathan | 10.0% | 13G | Aug 4, 2025 | filing ↗ | |
| Janus Henderson Biotech Innovation Master Fund Ltd | 9.9% | 13G | Aug 14, 2025 | filing ↗ | |
| Janus Henderson Group Ltd. | 9.3% | 13G | Aug 13, 2026 | filing ↗ | |
| MPM BioImpact LLC | 7.2% | 13G | May 15, 2026 | filing ↗ | |
| Affinity Healthcare Fund, LP | 6.9% | 13G | Dec 23, 2025 | filing ↗ | |
| Steven M. Oliveira | 6.8% | 13G | Jan 10, 2025 | filing ↗ | |
| Orbimed Advisors LLC | 6.2% | 13G | Aug 14, 2026 | filing ↗ | |
| BlackRock, Inc. | 5.9% | 13G | Jul 28, 2026 | filing ↗ | |
| Affinity Asset Advisors, LLC | 5.6% | 13G | Aug 13, 2026 | filing ↗ | |
| Michael Cho | 5.6% | 13G | Aug 13, 2026 | filing ↗ | |
| OrbiMed Capital GP IX LLC | 5.1% | 13G | Aug 14, 2026 | filing ↗ | |
| Federated Hermes, Inc. | exited | 13G | Sep 8, 2026 | filing ↗ | |
| Voting Shares Irrevocable Trust | exited | 13G | Sep 8, 2026 | filing ↗ | |
| Thomas R. Donahue | exited | 13G | Sep 8, 2026 | filing ↗ | |
| Ann C. Donahue | exited | 13G | Sep 8, 2026 | filing ↗ | |
| J. Christopher Donahue | exited | 13G | Sep 8, 2026 | filing ↗ |
Planned insider sales (Form 144)
No sale notices filed in the last 12 months.
Material events (8-K)
| Item | Event date | |
|---|---|---|
| Acquisition or disposition (2.01) | Aug 27, 2026 | filing ↗ |
| Delisting notice (3.01) | Aug 27, 2026 | filing ↗ |
| Material Modifications to Rights of Security Holders (3.03) | Aug 27, 2026 | filing ↗ |
| Change of control (5.01) | Aug 27, 2026 | filing ↗ |
| Officer/director changes (5.02) | Aug 27, 2026 | filing ↗ |
| Charter/bylaw changes (5.03) | Aug 27, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Aug 27, 2026 | filing ↗ |
| Material agreement (1.01) | Jul 26, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Jul 26, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jul 26, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Jul 9, 2026 | filing ↗ |
| Other events (8.01) | Jul 9, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jul 9, 2026 | filing ↗ |
| Officer/director changes (5.02) | May 29, 2026 | filing ↗ |
| Shareholder vote (5.07) | May 29, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | May 29, 2026 | filing ↗ |
| Earnings (2.02) | May 11, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | May 11, 2026 | filing ↗ |
| Material agreement (1.01) | Apr 8, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Apr 8, 2026 | filing ↗ |
| Other events (8.01) | Apr 8, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Apr 8, 2026 | filing ↗ |
| Earnings (2.02) | Mar 31, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Mar 31, 2026 | filing ↗ |
| Earnings (2.02) | Nov 14, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Nov 14, 2025 | filing ↗ |