Vault-13

IMMUNIC INC IMUX

COM NEW · Common Stock · CUSIP 4525EP200

55 institutional holders +52 vs Q1 2026
8,658,8608.7m shares reported held*
63.5% of all shares outstanding*
$133.1mreported value*
53 new 1 added 1 reduced 1 sold out net bought ≈ $118.9m (+7.7m shares)

* 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

0204060Q1 26: 3Q2 26: 5555Q1 26Q2 26
Numbers
QuarterHolders
Q1 20263
Q2 202655

Calls vs puts

Options held, notional value, last 4 quarters. P/C = puts ÷ calls

CallsPuts
$0$2m$4m$6mQ3 25 calls: $0Q3 25 puts: $0Q3 25P/C —Q4 25 calls: $0Q4 25 puts: $0Q4 25P/C —Q1 26 calls: $0Q1 26 puts: $0Q1 26P/C —Q2 26 calls: $4.6mQ2 26 puts: $865.3kQ2 26P/C 0.19
Numbers
QuarterCallsPutsP/C
Q3 2025$0$0—
Q4 2025$0$0—
Q1 2026$0$0—
Q2 2026$4.6m$865.3k0.19

Biggest buyers

Aberdeen Group plc New +824,393+824.4k
BVF INC/IL New +765,295+765.3k
MILLENNIUM MANAGEMENT LLC New +740,347+740.3k
Avidity Partners Management LP New +669,941+669.9k
BRAIDWELL LP New +645,010+645.0k
Laurion Capital Management LP New +610,326+610.3k
VANGUARD CAPITAL MANAGEMENT LLC New +571,561+571.6k
Jones Hill Capital LP New +539,814+539.8k
Nantahala Capital Management, LLC New +501,292+501.3k
Woodline Partners LP New +471,528+471.5k

Biggest sellers

MARSHALL WACE, LLP Reduced -848,150-848.1k
Parallel Advisors, LLC Sold out -2-2

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.

HolderStakeChangeShares Last filed
Commodore Capital LP 13G · passive investor filed 2026-08-14 9.9% 1.5m≈ $22.8m 2026-08-14
Nantahala Capital Management, LLC 13G · institution filed 2026-08-14 7.5% 1.1m≈ $16.6m 2026-08-14
INTEGRATED CORE STRATEGIES (US) LLC 13G · passive investor +1.3 pts · filed 2026-08-06 7.0% +1.3 pts 969.5k≈ $14.9m 2026-08-06
Laurion Capital Management LP 13G · institution new · filed 2026-08-04 6.1% new 839.5k≈ $12.9m 2026-08-04
Aberdeen Group plc 13G · institution filed 2026-07-16 6.0% 824.4k≈ $12.7m 2026-07-16

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)

BuyingSelling
10010Q4 24: 1 buyingQ4 24: 0 sellingQ1 25: 0 buyingQ1 25: 0 sellingQ1 25Q2 25: 6 buyingQ2 25: 0 sellingQ3 25: 0 buyingQ3 25: 0 sellingQ3 25Q4 25: 0 buyingQ4 25: 0 sellingQ1 26: 0 buyingQ1 26: 0 sellingQ1 26Q2 26: 0 buyingQ2 26: 0 sellingQ3 26: 0 buyingQ3 26: 0 sellingQ3 26
Numbers
QuarterBuyingBoughtSellingSoldSold under a plan
Q4 20241$100.4k0——
Q1 20250—0——
Q2 20256$246.8k0——
Q3 20250—0——
Q4 20250—0——
Q1 20260—0——
Q2 20260—0——
Q3 20260—0——

None reported since 1 Apr 2026.

Holders, Q2 2026

#ManagerLocationShares Value% of their portfolioChangeShares change
1 Aberdeen Group plc 0.02% of their portfolio EDINBURGH, X0 824,393824.4k $12.7m $12.7m 0.02% New
2 BVF INC/IL 0.30% of their portfolio San Francisco, CA 765,295765.3k $11.8m $11.8m 0.30% New
3 MILLENNIUM MANAGEMENT LLC 0.01% of their portfolio NEW YORK, NY 740,347740.3k $11.4m $11.4m 0.01% New
4 Avidity Partners Management LP 1.65% of their portfolio DALLAS, TX 669,941669.9k $10.3m $10.3m 1.65% New
5 BRAIDWELL LP 0.37% of their portfolio STAMFORD, CT 645,010645.0k $9.9m $9.9m 0.37% New
6 Laurion Capital Management LP 0.68% of their portfolio NEW YORK, NY 610,326610.3k $9.4m $9.4m 0.68% New
7 VANGUARD CAPITAL MANAGEMENT LLC 0.00% of their portfolio MALVERN, PA 571,561571.6k $8.8m $8.8m 0.00% New
8 Jones Hill Capital LP 1.76% of their portfolio NEW YORK, NY 539,814539.8k $8.3m $8.3m 1.76% New
9 Nantahala Capital Management, LLC 0.23% of their portfolio NEW CANAAN, CT 501,292501.3k $7.7m $7.7m 0.23% New
10 Woodline Partners LP 0.02% of their portfolio San Francisco, CA 471,528471.5k $7.2m $7.2m 0.02% New
11 Soleus Capital Management, L.P. 0.24% of their portfolio GREENWICH, CT 450,000450.0k $6.9m $6.9m 0.24% New
12 Propel Bio Management, LLC 2.61% of their portfolio Los Angeles, CA 325,022325.0k $5.0m $5.0m 2.61% New
13 UBS Group AG 0.00% of their portfolio ZURICH, V8 175,756175.8k $2.7m $2.7m 0.00% New
14 GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio BOSTON, MA 170,675170.7k $2.6m $2.6m 0.00% New
15 683 Capital Management, LLC 0.21% of their portfolio NEW YORK, NY 147,245147.2k $2.3m $2.3m 0.21% New
16 ADAGE CAPITAL PARTNERS GP, L.L.C. 0.00% of their portfolio Boston, MA 139,860139.9k $2.1m $2.1m 0.00% New
17 BlackRock, Inc. 0.00% of their portfolio New York, NY 132,791132.8k $2.0m $2.0m 0.00% New
18 MARSHALL WACE, LLP 0.00% of their portfolio LONDON, X0 104,816104.8k $1.6m $1.6m 0.00% Reduced -848.1k -848,150
19 SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio BALA CYNWYD, PA 90,89090.9k $1.4m $1.4m 0.00% New
20 JANE STREET GROUP, LLC 0.00% of their portfolio NEW YORK, NY 89,68789.7k $1.4m $1.4m 0.00% New
21 Jefferies Financial Group Inc. 0.01% of their portfolio NEW YORK, NY 84,90084.9k $1.3m $1.3m 0.01% New
22 VANGUARD FIDUCIARY TRUST CO 0.00% of their portfolio MALVERN, PA 82,02982.0k $1.3m $1.3m 0.00% New
23 Ikarian Capital, LLC 0.17% of their portfolio DALLAS, TX 67,46467.5k $1.0m $1.0m 0.17% New
24 Quadrature Capital Ltd 0.00% of their portfolio LONDON, X0 37,78637.8k $580.8k $580.8k 0.00% New
25 Simplify Asset Management Inc. 0.01% of their portfolio Las Vegas, NV 30,72530.7k $472.2k $472.2k 0.01% New
26 NORTHERN TRUST CORP 0.00% of their portfolio CHICAGO, IL 30,72030.7k $472.2k $472.2k 0.00% New
27 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 23,74823.7k $365.0k $365.0k 0.00% New
28 Brevan Howard Capital Management LP 0.01% of their portfolio ST. HELIER, Y9 23,18123.2k $356.3k $356.3k 0.01% New
29 BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio PARIS, I0 22,90922.9k $352.1k $352.1k 0.00% New
30 CITADEL ADVISORS LLC 0.00% of their portfolio MIAMI, FL 21,62021.6k $332.3k $332.3k 0.00% New
31 LPL Financial LLC 0.00% of their portfolio FORT MILL, SC 17,44117.4k $268.1k $268.1k 0.00% New
32 MML INVESTORS SERVICES, LLC 0.00% of their portfolio SPRINGFIELD, MA 14,66214.7k $225.4k $225.4k 0.00% New
33 ALPS ADVISORS INC 0.00% of their portfolio Denver, CO 13,82413.8k $212.5k $212.5k 0.00% New
34 BOOTHBAY FUND MANAGEMENT, LLC 0.00% of their portfolio NEW YORK, NY 13,05713.1k $200.7k $200.7k 0.00% New
35 Point72 Asset Management, L.P. 0.00% of their portfolio STAMFORD, CT 10,80610.8k $166.1k $166.1k 0.00% New
36 Strategies Wealth Advisors, LLC 0.01% of their portfolio GRAND RAPIDS, MI 10,00010.0k $153.7k $153.7k 0.01% New
37 China Universal Asset Management Co., Ltd. 0.01% of their portfolio SHANGHAI, F4 6,4006.4k $98.4k $98.4k 0.01% New
38 CITIGROUP INC 0.00% of their portfolio NEW YORK, NY 4,5694.6k $70.2k $70.2k 0.00% New
39 Vanguard Global Advisers, LLC 0.00% of their portfolio MALVERN, PA 3,1863.2k $49.0k $49.0k 0.00% New
40 ROYAL BANK OF CANADA 0.00% of their portfolio TORONTO, A6 1,0001.0k $15.0k $15.0k 0.00% New
41 OSAIC HOLDINGS, INC. 0.00% of their portfolio SCOTTSDALE, AZ 1,0001.0k $15.4k $15.4k 0.00% New
42 Providence Capital Advisors, LLC 0.00% of their portfolio CHARLOTTE, NC 682682 $10.5k $10.5k 0.00% New
43 BARCLAYS PLC 0.00% of their portfolio LONDON, X0 494494 $7.6k $7.6k 0.00% New
44 SBI Securities Co., Ltd. 0.00% of their portfolio TOKYO, M0 373373 $5.7k $5.7k 0.00% New
45 NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO 0.00% of their portfolio MILWAUKEE, WI 150150 $2.3k $2.3k 0.00% New
46 GROUP ONE TRADING LLC 0.00% of their portfolio CHICAGO, IL 145145 $2.2k $2.2k 0.00% New
47 FMR LLC 0.00% of their portfolio BOSTON, MA 128128 $2.0k $2.0k 0.00% New
48 Rockefeller Capital Management L.P. 0.00% of their portfolio NEW YORK, NY 100100 $1.5k $1.5k 0.00% New
49 WELLS FARGO & COMPANY/MN 0.00% of their portfolio SAN FRANCISCO, CA 8787 $1.3k $1.3k 0.00% New
50 Allworth Financial LP 0.00% of their portfolio FOLSOM, CA 8484 $1.3k $1.3k 0.00% New
51 JPMORGAN CHASE & CO 0.00% of their portfolio NEW YORK, NY 3838 $586 $586 0.00% New
52 SHP Wealth Management 0.00% of their portfolio PLYMOUTH, MA 1414 $215 $215 0.00% New
53 CALDWELL SUTTER CAPITAL, INC. 0.00% of their portfolio SAUSALITO, CA 1010 $154 $154 0.00% Added +7 +7
54 DANSKE BANK A/S 0.00% of their portfolio COPENHAGEN V, G7 22 $31 $31 0.00% New
55 Caitong International Asset Management Co., Ltd 0.00% of their portfolio HONG KONG, K3 22 $31 $31 0.00% New