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IBIO · iBio, Inc. · Shareholders & Ownership

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$0.77 +0.06 (+8.47%) At close · Oct 27 Q4 2022 earnings call transcript
Market Cap
$49.32M
Shares
64.31M
Volume · Oct 27 478.17K Avg daily vol (3M) 731.98K

Every disclosed holder of IBIO in one list: 13F institutions, Schedule 13D and 13G filers, insiders (Forms 3, 4 and 5) and registered funds, each from its own latest filing. Holders nest by CIK and SEC reporting links, never by name, and each is summed once.

Who Owns IBIO

13F quarter Sep 30, 2026, combined view: filers that have not filed yet carry their Jun 30, 2026 positions

No chart: the summed disclosures exceed shares outstanding, so they are not parts of one whole.

Holder group Shares % Out
Institutional (13F) 34,584,154 53.78%
Insiders (Forms 3, 4, 5) 304,860 0.47%
13D/G-only blocks 30,000,397 46.65%
Remaining 582,155 -0.91%
Registered funds (N-PORT, not summed) 2,625,384 4.08%

Shares outstanding: 64,307,256, the issuer's latest cover-page count restated onto today's split basis.

Remaining is negative: the summed disclosures exceed shares outstanding, as when filings are dated at different times or holders that do not disclose their links count the same shares. It is flagged, not clipped.

13D/G-only counts each filer's latest 13D or 13G that no 13F report of the listing contains, that names no 13F filer and that no counted insider files. Funds are never summed: their shares sit inside their advisers' 13F reports.

Holders of IBIO

# Holder Shares
1
Sirenia Capital Management LP
13G CIK 2115022 · Registered investment adviser · Mar 31, 2026
Rule 13d-1(b), qualified institution
11,586,340
2
Coastlands Capital LP
13G CIK 2068530 · Investment adviser · Oct 7, 2026
Rule 13d-1(b), qualified institution
6,247,738
3
Affinity Asset Advisors, LLC
13F CIK 1773195 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
4,007,881
3.1
Affinity Asset Advisors, LLC
13G CIK 1773195 · Registered investment adviser · Jun 30, 2026
Rule 13d-1(b), qualified institution, not summed
5,068,882
4
Cormorant Asset Management, LP
13F CIK 1583977 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
3,570,000
4.1
Cormorant Asset Management, LP
13G CIK 1583977 · Registered investment adviser · Jun 30, 2026
Rule 13d-1(b), qualified institution, not summed
5,117,481
5
SILVERARC CAPITAL MANAGEMENT, LLC
13F CIK 1816307 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
3,520,490
6
Lynx1 Capital Management LP
13G CIK 1910456 · Registered investment adviser · Jun 30, 2026
Rule 13d-1(c), passive investor
2,807,016
7
Vestal Point Capital, LP
13F CIK 1974915 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
2,600,000
7.1
Vestal Point Capital, LP
13G CIK 1974915 · Registered investment adviser · Jun 30, 2026
Rule 13d-1(b), qualified institution, not summed
4,025,000
8
Adage Capital Management, L.P.
13G CIK 1535978 · Investment adviser · Sep 30, 2025
Rule 13d-1(b), qualified institution
2,181,422
9
VANGUARD CAPITAL MANAGEMENT LLC
13F CIK 2100119 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
2,098,151
10
Frazier Life Sciences Management, L.P.
13F CIK 1892134 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
1,953,467
11
James N. Topper
13G CIK 1863769 · Unknown · Mar 31, 2026
Rule 13d-1(c), passive investor
1,953,467
12
Ensign Peak Advisors, Inc
13F CIK 1454984 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
1,832,457
13
Woodline Partners LP
13F CIK 1784547 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
1,776,547
14
MILLENNIUM MANAGEMENT LLC
13F CIK 1273087 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
1,651,473
15
EcoR1 Capital, LLC
13G CIK 1587114 · Registered investment adviser · Mar 31, 2026
Rule 13d-1(b), qualified institution
1,583,000
16
VANGUARD TOTAL STOCK MARKET INDEX FUND
Fund S000002848 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
1,465,833
17
CITADEL ADVISORS LLC
13F CIK 1423053 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
1,384,029
18
Millennium Management LLC
13G CIK 1319244 · Unknown · Jan 15, 2026
Rule 13d-1(c), passive investor
1,235,827
19
Balyasny Asset Management L.P.
13F CIK 1218710 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
1,170,893
20
BANK OF AMERICA CORP /DE/
13F CIK 70858 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
1,121,492
21
Ikarian Capital, LLC
13F CIK 1778253 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
957,062
22
Sio Capital Management, LLC
13F CIK 1482416 · Investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
904,268
23
MARSHALL WACE, LLP
13F CIK 1318757 · Exempt reporting adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
904,132
24
Patrick J. Crutcher
13G CIK 1754540 · Investment adviser · Jun 30, 2025
Rule 13d-1(c), passive investor
847,044
25
ADAR1 Partners, LP
13G CIK 1758866 · Unknown · Mar 26, 2024
Rule 13d-1(c), passive investor
789,293
26
Opaleye Management Inc.
13G CIK 1595855 · Registered investment adviser · Dec 31, 2024
Rule 13d-1(c), passive investor
750,000
27
VANGUARD EXTENDED MARKET INDEX FUND
Fund S000002841 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
582,071
28
GEODE CAPITAL MANAGEMENT, LLC
13F CIK 1214717 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
500,816
29
Walleye Capital LLC
13F CIK 1758720 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
500,375
30
Squarepoint Ops LLC
13F CIK 1642575 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
498,872
31
TWO SIGMA INVESTMENTS, LP
13F CIK 1179392 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
400,667
32
Ally Bridge Group (NY) LLC
13F CIK 1822947 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
390,147
33
ADAR1 Capital Management, LLC
13F CIK 1940272 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
375,531
34
Verdad Advisers, LP
13F CIK 1812822 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
298,927
35
VANGUARD FIDUCIARY TRUST CO
13F CIK 933478 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
286,875
36
BOOTHBAY FUND MANAGEMENT, LLC
13F CIK 1549230 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
254,412
37
NOESIS CAPITAL MANGEMENT CORP
13F CIK 1262677 · Registered investment adviser · Sep 30, 2026
249,000
38
BlackRock, Inc.
13F CIK 2012383 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
242,016
38.1
iShares Micro-Cap ETF
Fund S000004439 · Registered fund · Jun 30, 2026
iShares Trust, not summed
103,831
39
RENAISSANCE TECHNOLOGIES LLC
13F CIK 1037389 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
202,847
40
GOLDMAN SACHS GROUP INC
13F CIK 886982 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
200,455
41
Parada Antonio Bernardino Guimaraes
Insider CIK 2047863 · Jan 10, 2025
Director, issuer-wide
183,823
42
STATE STREET CORP
13F CIK 93751 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
170,799
43
DAFNA Capital Management LLC
13F CIK 1389933 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
170,053
44
NORTHERN TRUST CORP
13F CIK 73124 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
111,319
45
Atom Investors LP
13F CIK 1738902 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
101,557
46
XTX Topco Ltd
13F CIK 1828301 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
57,842
47
Headlands Technologies LLC
13F CIK 1570271 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
47,413
48
Duran Felipe
Insider CIK 1964267 · Mar 19, 2026
Chief Financial Officer, issuer-wide
35,974
49
Brenner Martin
Insider CIK 1770235 · Mar 19, 2026
Director, See Remarks, issuer-wide
30,652
50
VANGUARD INSTITUTIONAL TOTAL STOCK MARKET INDEX FUND
Fund S000002855 · Registered fund · Jun 30, 2026
VANGUARD INSTITUTIONAL INDEX FUNDS, not summed
29,586

Shares are restated onto today's split basis. Change compares each row with the same holder's previous filing in the same source; a dash means there is none to compare. Nested 13D/G, insider and fund rows are not summed, since a 13F report already holds them.

Showing 1–50 of 81 holders

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Key facts CIK 1420720 CUSIP 451033708 13F (30d) 4 filings 4 filers Visit website Investor relations