INSTIL BIO INC TIL
COM NEW · Common Stock · CUSIP 45783C200
- SectorHealth care
- IndustryBiological Products, (No Diagnostic Substances)
- HeadquartersDallas, TX
- FilingsSEC EDGAR
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once. Holder counts are more reliable. Shares outstanding: 6.8m as of 2026-03-25, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $8.24.
Trends to Q1 2026
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q4 2023 | 30 |
| Q1 2024 | 31 |
| Q2 2024 | 30 |
| Q3 2024 | 49 |
| Q4 2024 | 40 |
| Q1 2025 | 43 |
| Q2 2025 | 38 |
| Q3 2025 | 33 |
| Q4 2025 | 28 |
| Q1 2026 | 31 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q2 2024 | 11 | 12 |
| Q3 2024 | 31 | 16 |
| Q4 2024 | 25 | 21 |
| Q1 2025 | 19 | 17 |
| Q2 2025 | 16 | 25 |
| Q3 2025 | 13 | 19 |
| Q4 2025 | 12 | 19 |
| Q1 2026 | 11 | 14 |
Biggest buyers
| Kalehua Capital Management LLC | New | +322.9k |
| XTX Topco Ltd | Added | +14.0k |
| JANE STREET GROUP, LLC | New | +11.5k |
| PRELUDE CAPITAL MANAGEMENT, LLC | New | +10.3k |
| Vazirani Asset Management LLC | New | +10.0k |
| FNY Investment Advisers, LLC | New | +10.0k |
| GEODE CAPITAL MANAGEMENT, LLC | Added | +6.3k |
| UBS Group AG | Added | +6.0k |
| BlackRock, Inc. | Added | +805 |
| BOKF, NA | New | +454 |
Biggest sellers
| Siren, L.L.C. | Sold out | -203.9k |
| MILLENNIUM MANAGEMENT LLC | Reduced | -109.8k |
| MORGAN STANLEY | Reduced | -69.2k |
| DIMENSIONAL FUND ADVISORS LP | Reduced | -41.0k |
| AlphaQuest LLC | Sold out | -37.3k |
| Quadrature Capital Ltd | Sold out | -19.2k |
| CITADEL ADVISORS LLC | Reduced | -8.8k |
| RENAISSANCE TECHNOLOGIES LLC | Reduced | -8.7k |
| BARCLAYS PLC | Reduced | -6.0k |
| ROYAL BANK OF CANADA | Reduced | -1.3k |
Insider purchases and sales in Q1 2026
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
Officers and directors buying vs selling
Number of people, by quarter (10% owners not included)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q2 2024 | 0 | — | 0 | — | — |
| Q3 2024 | 0 | — | 0 | — | — |
| Q4 2024 | 0 | — | 0 | — | — |
| Q1 2025 | 0 | — | 0 | — | — |
| Q2 2025 | 0 | — | 0 | — | — |
| Q3 2025 | 0 | — | 1 | $701.7k | — |
| Q4 2025 | 0 | — | 0 | — | — |
| Q1 2026 | 0 | — | 0 | — | — |
None reported in Q1 2026.
Holders, Q1 2026
| Manager | Shares | Change |
|---|---|---|
| BML Capital Management, LLC 3.42% of their portfolio | 645.6k $5.3m | Unchanged |
| CPMG Inc 9.13% of their portfolio | 410.9k $3.4m | Unchanged |
| Kalehua Capital Management LLC 1.02% of their portfolio | 322.9k $2.7m | New |
| Vivo Capital, LLC 0.20% of their portfolio | 292.7k $2.4m | Unchanged |
| VANGUARD CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 174.6k $1.4m | First filing |
| MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio | 132.9k $1.1m | Reduced -109.8k |
| RENAISSANCE TECHNOLOGIES LLC 0.00% of their portfolio | 59.1k $487.0k | Reduced -8.7k |
| BlackRock, Inc. 0.00% of their portfolio | 52.0k $428.6k | Added +805 |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. 0.00% of their portfolio | 50.0k $412.0k | Unchanged |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 49.0k $404.0k | Added +6.3k |
| CITADEL ADVISORS LLC 0.00% of their portfolio | 38.6k $317.8k | Reduced -8.8k |
| LPL Financial LLC 0.00% of their portfolio | 32.1k $264.2k | Reduced -1.0k |
| XTX Topco Ltd 0.00% of their portfolio | 26.2k $216.2k | Added +14.0k |
| VANGUARD FIDUCIARY TRUST CO 0.00% of their portfolio | 22.6k $186.4k | First filing |
| DIMENSIONAL FUND ADVISORS LP 0.00% of their portfolio | 20.0k $164.5k | Reduced -41.0k |
| MORGAN STANLEY 0.00% of their portfolio | 19.8k $163.3k | Reduced -69.2k |
| STATE STREET CORP 0.00% of their portfolio | 17.6k $145.0k | Unchanged |
| Americana Partners, LLC 0.00% of their portfolio | 16.2k $133.3k | Unchanged |
| JANE STREET GROUP, LLC 0.00% of their portfolio | 11.5k $94.9k | New |
| PRELUDE CAPITAL MANAGEMENT, LLC 0.01% of their portfolio | 10.3k $84.9k | New |
| Vazirani Asset Management LLC 0.19% of their portfolio | 10.0k $82.4k | New |
| FNY Investment Advisers, LLC 0.04% of their portfolio | 10.0k $82.0k | New |
| UBS Group AG 0.00% of their portfolio | 6.4k $52.6k | Added +6.0k |
| BARCLAYS PLC 0.00% of their portfolio | 4.1k $34.1k | Reduced -6.0k |
| Vanguard Global Advisers, LLC 0.00% of their portfolio | 1.5k $12.1k | First filing |
| BOKF, NA 0.00% of their portfolio | 454 $3.7k | New |
| RHUMBLINE ADVISERS 0.00% of their portfolio | 114 $939 | Unchanged |
| ROYAL BANK OF CANADA 0.00% of their portfolio | 84 $1.0k | Reduced -1.3k |
| Farther Finance Advisors, LLC 0.00% of their portfolio | 70 $562 | Unchanged |
| Fortitude Family Office, LLC 0.00% of their portfolio | 64 $527 | New |
| BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio | 7 $58 | Unchanged |