IMMUNIC INC IMUX
COM NEW · Common Stock · CUSIP 4525EP200
- SectorHealth care
- IndustryPharmaceutical Preparations
- 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 ($472.2k this quarter). Holder counts are more reliable. Shares outstanding: 13.6m as of 2026-07-31, 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 ≈ $15.37. Options: 6 managers hold calls ($4.6m notional), 2 hold puts ($865.3k).
Trends to Q2 2026
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q1 2026 | 3 |
| Q2 2026 | 55 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2025 | $0 | $0 | — |
| Q4 2025 | $0 | $0 | — |
| Q1 2026 | $0 | $0 | — |
| Q2 2026 | $4.6m | $865.3k | 0.19 |
Biggest buyers
| Aberdeen Group plc | New | +824.4k |
| BVF INC/IL | New | +765.3k |
| MILLENNIUM MANAGEMENT LLC | New | +740.3k |
| Avidity Partners Management LP | New | +669.9k |
| BRAIDWELL LP | New | +645.0k |
| Laurion Capital Management LP | New | +610.3k |
| VANGUARD CAPITAL MANAGEMENT LLC | New | +571.6k |
| Jones Hill Capital LP | New | +539.8k |
| Nantahala Capital Management, LLC | New | +501.3k |
| Woodline Partners LP | New | +471.5k |
Biggest sellers
| MARSHALL WACE, LLP | Reduced | -848.1k |
| Parallel Advisors, LLC | Sold out | -2 |
Biggest calls
| SIMPLEX TRADING, LLC | New | $2.2m139.9k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | New | $1.8m118.4k shares |
| JANE STREET GROUP, LLC | New | $235.2k15.3k shares |
| CITADEL ADVISORS LLC | New | $211.5k13.8k shares |
| GROUP ONE TRADING LLC | New | $189.1k12.3k shares |
| Belvedere Trading LLC | New | $32.2k20.9k shares |
Biggest puts
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | New | $774.6k50.4k shares |
| SIMPLEX TRADING, LLC | New | $90.7k5.9k shares |
Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
| Commodore Capital LP 13G · passive investor filed 2026-08-14 | 9.9% |
| Nantahala Capital Management, LLC 13G · institution filed 2026-08-14 | 7.5% |
| INTEGRATED CORE STRATEGIES (US) LLC 13G · passive investor +1.3 pts · filed 2026-08-06 | 7.0% |
| Laurion Capital Management LP 13G · institution new · filed 2026-08-04 | 6.1% |
| Aberdeen Group plc 13G · institution filed 2026-07-16 | 6.0% |
Fell to 5% or below in the last year: Soleus Capital Master Fund, L.P. (4.9%, 2026-08-13), 683 Capital Management, LLC (3.4%, 2026-05-15)
Insider purchases and sales since 1 Apr 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 |
|---|---|---|---|---|---|
| Q4 2024 | 1 | $100.4k | 0 | — | — |
| Q1 2025 | 0 | — | 0 | — | — |
| Q2 2025 | 6 | $246.8k | 0 | — | — |
| Q3 2025 | 0 | — | 0 | — | — |
| Q4 2025 | 0 | — | 0 | — | — |
| Q1 2026 | 0 | — | 0 | — | — |
| Q2 2026 | 0 | — | 0 | — | — |
| Q3 2026 | 0 | — | 0 | — | — |
None reported since 1 Apr 2026.
Holders, Q2 2026
| Manager | Shares | Change |
|---|---|---|
| Aberdeen Group plc 0.02% of their portfolio | 824.4k $12.7m | New |
| BVF INC/IL 0.30% of their portfolio | 765.3k $11.8m | New |
| MILLENNIUM MANAGEMENT LLC 0.01% of their portfolio | 740.3k $11.4m | New |
| Avidity Partners Management LP 1.65% of their portfolio | 669.9k $10.3m | New |
| BRAIDWELL LP 0.37% of their portfolio | 645.0k $9.9m | New |
| Laurion Capital Management LP 0.68% of their portfolio | 610.3k $9.4m | New |
| VANGUARD CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 571.6k $8.8m | New |
| Jones Hill Capital LP 1.76% of their portfolio | 539.8k $8.3m | New |
| Nantahala Capital Management, LLC 0.23% of their portfolio | 501.3k $7.7m | New |
| Woodline Partners LP 0.02% of their portfolio | 471.5k $7.2m | New |
| Soleus Capital Management, L.P. 0.24% of their portfolio | 450.0k $6.9m | New |
| Propel Bio Management, LLC 2.61% of their portfolio | 325.0k $5.0m | New |
| UBS Group AG 0.00% of their portfolio | 175.8k $2.7m | New |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 170.7k $2.6m | New |
| 683 Capital Management, LLC 0.21% of their portfolio | 147.2k $2.3m | New |
| ADAGE CAPITAL PARTNERS GP, L.L.C. 0.00% of their portfolio | 139.9k $2.1m | New |
| BlackRock, Inc. 0.00% of their portfolio | 132.8k $2.0m | New |
| MARSHALL WACE, LLP 0.00% of their portfolio | 104.8k $1.6m | Reduced -848.1k |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio | 90.9k $1.4m | New |
| JANE STREET GROUP, LLC 0.00% of their portfolio | 89.7k $1.4m | New |
| Jefferies Financial Group Inc. 0.01% of their portfolio | 84.9k $1.3m | New |
| VANGUARD FIDUCIARY TRUST CO 0.00% of their portfolio | 82.0k $1.3m | New |
| Ikarian Capital, LLC 0.17% of their portfolio | 67.5k $1.0m | New |
| Quadrature Capital Ltd 0.00% of their portfolio | 37.8k $580.8k | New |
| Simplify Asset Management Inc. 0.01% of their portfolio | 30.7k $472.2k | New |
| NORTHERN TRUST CORP 0.00% of their portfolio | 30.7k $472.2k | New |
| MORGAN STANLEY 0.00% of their portfolio | 23.7k $365.0k | New |
| Brevan Howard Capital Management LP 0.01% of their portfolio | 23.2k $356.3k | New |
| BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio | 22.9k $352.1k | New |
| CITADEL ADVISORS LLC 0.00% of their portfolio | 21.6k $332.3k | New |
| LPL Financial LLC 0.00% of their portfolio | 17.4k $268.1k | New |
| MML INVESTORS SERVICES, LLC 0.00% of their portfolio | 14.7k $225.4k | New |
| ALPS ADVISORS INC 0.00% of their portfolio | 13.8k $212.5k | New |
| BOOTHBAY FUND MANAGEMENT, LLC 0.00% of their portfolio | 13.1k $200.7k | New |
| Point72 Asset Management, L.P. 0.00% of their portfolio | 10.8k $166.1k | New |
| Strategies Wealth Advisors, LLC 0.01% of their portfolio | 10.0k $153.7k | New |
| China Universal Asset Management Co., Ltd. 0.01% of their portfolio | 6.4k $98.4k | New |
| CITIGROUP INC 0.00% of their portfolio | 4.6k $70.2k | New |
| Vanguard Global Advisers, LLC 0.00% of their portfolio | 3.2k $49.0k | New |
| ROYAL BANK OF CANADA 0.00% of their portfolio | 1.0k $15.0k | New |
| OSAIC HOLDINGS, INC. 0.00% of their portfolio | 1.0k $15.4k | New |
| Providence Capital Advisors, LLC 0.00% of their portfolio | 682 $10.5k | New |
| BARCLAYS PLC 0.00% of their portfolio | 494 $7.6k | New |
| SBI Securities Co., Ltd. 0.00% of their portfolio | 373 $5.7k | New |
| NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO 0.00% of their portfolio | 150 $2.3k | New |
| GROUP ONE TRADING LLC 0.00% of their portfolio | 145 $2.2k | New |
| FMR LLC 0.00% of their portfolio | 128 $2.0k | New |
| Rockefeller Capital Management L.P. 0.00% of their portfolio | 100 $1.5k | New |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 87 $1.3k | New |
| Allworth Financial LP 0.00% of their portfolio | 84 $1.3k | New |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 38 $586 | New |
| SHP Wealth Management 0.00% of their portfolio | 14 $215 | New |
| CALDWELL SUTTER CAPITAL, INC. 0.00% of their portfolio | 10 $154 | Added +7 |
| DANSKE BANK A/S 0.00% of their portfolio | 2 $31 | New |
| Caitong International Asset Management Co., Ltd 0.00% of their portfolio | 2 $31 | New |