🕵️ Xilio Therapeutics, Inc. ($XLO)
SEC insider & ownership activity, last 12 months · CIK 1840233 · every row links its SEC filing
Over the last 12 months insiders sold $6K against $2.0M of open-market buying. Gilead Sciences, Inc. bought $2.0M in discretionary trades (Feb). One red-flag 8-K in the window: Delisting notice (3.01), Oct 2, 2025.
Monthly net open-market insider flow, last 12 months (up = net buying)
Insider flow
2 buyers, $2.0M (2 lots) · 2 sellers, $6K (2 lots)
| Insider | Buys | Bought | Sells | Sold | Last |
|---|---|---|---|---|---|
| Gilead Sciences, Inc. | 1 | $2.0M | 0 | – | Feb 13, 2026 |
| Shannon James Samuel | 1 | $44K | 0 | – | Mar 26, 2026 |
| Frankenfield Christopher James | 0 | – | 1 | $5K | Jan 2, 2026 |
| Kevin M. Brennan | 0 | – | 1 | $1K | Jan 2, 2026 |
5%+ holders
| Holder | Stake | Class | Schedule | Event | |
|---|---|---|---|---|---|
| Gilead Sciences, Inc. | 19.9% | 13G | Feb 12, 2026 | filing ↗ | |
| BCLS II Equity Opportunities, LP | 10.0% | 13G | May 15, 2026 | filing ↗ | |
| Coastlands Capital LP | 10.0% | 13G | Dec 11, 2025 | filing ↗ | |
| Coastlands Capital Partners LP | 10.0% | 13G | Dec 11, 2025 | filing ↗ | |
| Coastlands Capital GP LLC | 10.0% | 13G | Dec 11, 2025 | filing ↗ | |
| Coastlands Capital LLC | 10.0% | 13G | Dec 11, 2025 | filing ↗ | |
| Matthew D. Perry | 10.0% | 13G | Dec 11, 2025 | filing ↗ | |
| Orbimed Advisors LLC | 10.0% | 13G | May 15, 2026 | filing ↗ | |
| Sirenia Capital Management LP | 9.9% | 13G | May 15, 2026 | filing ↗ | |
| Alex Silverstein | 9.9% | 13G | May 15, 2026 | filing ↗ | |
| Abbvie Inc. | 9.0% | 13G | Feb 18, 2025 | filing ↗ | |
| Stempoint Capital LP | 8.4% | 13G | Feb 17, 2026 | filing ↗ | |
| Stempoint Capital Management GP LLC | 8.4% | 13G | Feb 17, 2026 | filing ↗ | |
| Michelle Ross | 8.4% | 13G | Feb 17, 2026 | filing ↗ | |
| Orbimed Capital GP X LLC | 7.5% | 13G | May 15, 2026 | filing ↗ | |
| Frazier Life Sciences Public Fund, L.P. | 6.7% | 13G | Feb 13, 2026 | filing ↗ | |
| Fhmlsp, L.P. | 6.7% | 13G | Feb 13, 2026 | filing ↗ | |
| Fhmlsp, L.L.C. | 6.7% | 13G | Feb 13, 2026 | filing ↗ |
Planned insider sales (Form 144)
No sale notices filed in the last 12 months.
Material events (8-K)
| Item | Event date | |
|---|---|---|
| Officer/director changes (5.02) | Jun 10, 2026 | filing ↗ |
| Shareholder vote (5.07) | Jun 10, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jun 10, 2026 | filing ↗ |
| Earnings (2.02) | May 12, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | May 12, 2026 | filing ↗ |
| Officer/director changes (5.02) | Apr 15, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Apr 15, 2026 | filing ↗ |
| Earnings (2.02) | Mar 23, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Mar 23, 2026 | filing ↗ |
| Material Modifications to Rights of Security Holders (3.03) | Mar 12, 2026 | filing ↗ |
| Charter/bylaw changes (5.03) | Mar 12, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Mar 12, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Mar 9, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Mar 9, 2026 | filing ↗ |
| Shareholder vote (5.07) | Feb 23, 2026 | filing ↗ |
| Material agreement (1.01) | Feb 11, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Feb 11, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Feb 11, 2026 | filing ↗ |
| Earnings (2.02) | Jan 6, 2026 | filing ↗ |
| Officer/director changes (5.02) | Jan 6, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jan 6, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Jan 5, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jan 5, 2026 | filing ↗ |
| Officer/director changes (5.02) | Nov 21, 2025 | filing ↗ |
| Shareholder vote (5.07) | Nov 21, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Nov 21, 2025 | filing ↗ |
| Earnings (2.02) | Nov 13, 2025 | filing ↗ |
| Reg FD disclosure (7.01) | Nov 7, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Nov 7, 2025 | filing ↗ |
| Delisting notice (3.01) | Oct 2, 2025 | filing ↗ |