What does CUSIP 451033708 represent in this 13F holders report?

CUSIP 451033708 is the security identifier for IBIO - iBio, Inc. - Common Stock, par value $0.001 per share used to aggregate holder disclosures.

How many institutions held IBIO - iBio, Inc. - Common Stock, par value $0.001 per share in Q1 2026?

2 institutional investors reported IBIO - iBio, Inc. - Common Stock, par value $0.001 per share for Q1 2026. Use the holders table for investor-level position and value details.

iBio, Inc. - Common Stock, par value $0.001 per share (IBIO)

CUSIP: 451033708

Q1 2026 13F Holders as of 31 Mar 2026

Type / Class: Equity / Common Stock, par value $0.001 per share
Shares outstanding: 30,719,795
Total 13F shares: 642
Share change: +207
Total reported value: $1,220
Price per share: $1.95
Number of holders: 2
Value change: +$393
Number of buys: 1

Quarterly Holders Quick Answers

What is CUSIP 451033708?
CUSIP 451033708 identifies IBIO - iBio, Inc. - Common Stock, par value $0.001 per share in SEC institutional holdings data.

Need full ownership history?
Open the full security ownership history page.

Next holder-history checks

These links keep the next click tied to holder verification, nearby quarters, or outside-13F ownership context.

Back to full security ownership history for the broader multi-quarter picture.
Latest 13F filings for newly reported positions across managers.
Latest Schedule 13D/13G reports for ownership changes outside the 13F cadence.
SEC investors directory for manager drilldown.

Explore More Reporting Periods

Jump to adjacent filing periods for faster comparison and easier crawl discovery.

Previous quarter: Q4 2025

Recent filing periods for CUSIP 451033708:

Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024 Q2 2024

Top shareholders of IBIO - iBio, Inc. - Common Stock, par value $0.001 per share (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.

Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

Holder	Source	Role / Reporting	Ownership %	Shares	Holdings Value	12M Net Δ	As of	Details
Point72 Asset Management, L.P.	13D/G	—	9.9%	14,289,118	$9,716,600	$0	22 Aug 2025	13D/G
Affinity Asset Advisors, LLC	13D/G 13F	Company	10%	2,401,616	$4,627,194	+$424,252	22 Jan 2026	13D/G 13F
EcoR1 Capital, LLC	13F 13D/G	Company	9.9% from 13D/G	2,228,000	$4,300,040	—	31 Dec 2025	13F 13D/G
Logos Global Management LP	13F 13D/G	Company	4.6% from 13D/G	2,000,000	$3,860,000	—	31 Dec 2025	13F 13D/G
Frazier Life Sciences Management, L.P.	13F	Company	6.4%	1,953,467	$3,770,191	—	31 Dec 2025	13F
Vestal Point Capital, LP	13D/G	—	9.9%	4,275,000	$3,518,752	$0	30 Sep 2025	13D/G
ADAR1 Capital Management, LLC	13D/G 13F	Company	4.4%	1,351,671	$3,433,244	-$1,123,655	31 Dec 2025	13D/G 13F
INTEGRATED CORE STRATEGIES (US) LLC	13D/G	Millennium Management LLC	5.2%	1,235,827	$2,381,068	$0	15 Jan 2026	13D/G
Frazier Life Sciences Public Fund, L.P.	13D/G	—	8.7%	1,953,467	$2,344,160	$0	09 Dec 2025	13D/G
BALYASNY ASSET MANAGEMENT L.P.	13F	Company	3.6%	1,096,179	$2,115,625	—	31 Dec 2025	13F
Cormorant Asset Management, LP	13D/G	—	10%	2,248,010	$1,850,337	$0	30 Sep 2025	13D/G
Ikarian Capital, LLC	13F 13D/G	Company	5% from 13D/G	957,062	$1,847,130	—	31 Dec 2025	13F 13D/G
Adage Capital Management, L.P.	13D/G	—	10%	2,181,422	$1,795,528	$0	30 Sep 2025	13D/G
SILVERARC CAPITAL MANAGEMENT, LLC	13D/G 13F	Company	10%	2,181,422	$1,795,528	$0	30 Sep 2025	13D/G 13F
VANGUARD GROUP INC	13F	Company	2.9%	883,149	$1,704,478	—	31 Dec 2025	13F
Sio Capital Management, LLC	13F	Company	2.4%	740,000	$1,428,200	—	31 Dec 2025	13F
AMERIPRISE FINANCIAL INC	13F	Company	1.9%	584,368	$1,127,831	—	31 Dec 2025	13F
TWO SIGMA INVESTMENTS, LP	13F	Company	1.5%	456,333	$880,723	—	31 Dec 2025	13F
Opaleye Management Inc.	13D/G	—	7.6%	750,000	$787,500	$0	31 Dec 2024	13D/G
RENAISSANCE TECHNOLOGIES LLC	13F	Company	1.2%	353,339	$681,944	—	31 Dec 2025	13F
Patrick J. Crutcher	13D/G	—	3.1%	847,044	$635,283	+$112,748	30 Jun 2025	13D/G
Monashee Investment Management LLC	13F	Company	0.89%	274,862	$530,484	—	31 Dec 2025	13F
Antonio Bernardino Guimaraes Parada	3/4/5	Director	— mixed-class rows	197,323 mixed-class rows	$499,999	—	20 Nov 2025	3/4/5
BOOTHBAY FUND MANAGEMENT, LLC	13F	Company	0.83%	254,412	$491,015	—	31 Dec 2025	13F
Hudson Bay Capital Management LP	13F	Company	0.79%	242,076	$467,207	—	31 Dec 2025	13F
NOESIS CAPITAL MANGEMENT CORP	13F	Company	0.73%	224,200	$432,706	—	31 Dec 2025	13F
GEODE CAPITAL MANAGEMENT, LLC	13F	Company	0.72%	222,610	$429,637	—	31 Dec 2025	13F
Walleye Capital LLC	13F	Company	0.65%	198,375	$382,864	—	31 Dec 2025	13F
Jefferies Financial Group Inc.	13F	Company	0.52%	160,000	$308,800	—	31 Dec 2025	13F
UBS Group AG	13F	Company	0.41%	126,556	$244,253	—	31 Dec 2025	13F
MARSHALL WACE, LLP	13F	Company	0.39%	121,286	$234,082	—	31 Dec 2025	13F
BANK OF AMERICA CORP /DE/	13F	Company	0.38%	115,793	$223,481	—	31 Dec 2025	13F
TWO SIGMA ADVISERS, LP	13F	Company	0.35%	108,400	$209,212	—	31 Dec 2025	13F
JANE STREET GROUP, LLC	13F	Company	0.34%	105,700	$204,001	—	31 Dec 2025	13F
Mountain Capital Investment Advisors Inc.	13F	Company	0.21%	63,000	$141,750	—	31 Dec 2025	13F
STATE STREET CORP	13F	Company	0.24%	72,899	$140,695	—	31 Dec 2025	13F
BlackRock, Inc.	13F	Company	0.14%	42,727	$82,463	—	31 Dec 2025	13F
NORTHERN TRUST CORP	13F	Company	0.13%	40,314	$77,806	—	31 Dec 2025	13F
Persistent Asset Partners Ltd	13F	Company	0.13%	39,585	$76,399	—	31 Dec 2025	13F
Felipe Duran	3/4/5	Chief Financial Officer	— mixed-class rows	214,974 mixed-class rows	$72,617	+$50,132	19 Mar 2026	3/4/5
Randy Joe Maddux	3/4/5	Chief Operating Officer	— class O/S missing	271,757	$72,151	—	07 Dec 2021	3/4/5
XTX Topco Ltd	13F	Company	0.12%	37,014	$71,437	—	31 Dec 2025	13F
Martin Brenner	3/4/5	Chief Executive Officer and Chief Scientific Officer, Director	— mixed-class rows	509,652 mixed-class rows	$61,917	+$24,919	19 Mar 2026	3/4/5
MORGAN STANLEY	13F	Company	0.09%	27,595	$53,259	—	31 Dec 2025	13F
David Arkowitz	3/4/5	Director	— mixed-class rows	31,882 mixed-class rows	$49,999	—	20 Nov 2025	3/4/5
Marc Banjak	3/4/5	Chief Legal Officer	— mixed-class rows	171,000 mixed-class rows	$44,000	+$23,055	26 Mar 2026	3/4/5
PFG Investments, LLC	13F	Company	0.07%	21,500	$41,495	—	31 Dec 2025	13F
Robert Matthew Lutz	3/4/5	Chief Financial & Business Officer and Principal Accounting Officer	— class O/S missing	102,165	$27,125	—	11 Nov 2022	3/4/5
Gary Sender	3/4/5	Director	— mixed-class rows	22,691 mixed-class rows	$25,000	—	20 Nov 2025	3/4/5
Vanguard Personalized Indexing Management, LLC	13F	Company	0.04%	12,491	$24,108	—	31 Dec 2025	13F

Institutional Holders of iBio, Inc. - Common Stock, par value $0.001 per share (IBIO) as of Q1 2026

As of 31 Mar 2026, iBio, Inc. - Common Stock, par value $0.001 per share (IBIO) was held by 2 institutional shareholders that filed Form 13F with the SEC. Together, they reported ownership of 642 shares. The largest 2 holders included Fortitude Family Office, LLC and Activest Wealth Management. This page lists 2 institutional shareholders reporting positions in this security for the Q1 2026 filing period.

Investor	Option	Weight %	Change %	Value $	* Price	Shares	Share Change	Activity	Report Period

Compare Q1 2026 vs Q4 2025 Across Filers

Q4 2025 holders

Q1 2026 holders

Holder diff

-47

Investor	Q4 2025 Shares	Q1 2026 Shares	Share Diff	Share Chg %	Q4 2025 Value $	Q1 2026 Value $	Value Diff $	Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend

* Reported Price is the price of the security as of the portfolio date. This value is significant in that it is the last known price at which the security was still held.
An asterisk sign (*) next to the price indicates that the price is likely invalid.