$IBIO

$0.71 -$0.01 (1.5%) Close

$IBIO Overview Financial Statements SEC Filings Executives News Red Flags Capital Raising Ownership Insider Transactions Congressional Trades

Ownership

13F as of Q2 2026 · 64.3M shares outstanding

Who owns IBIO?

By type of holder

Institutions 54.0% Insiders 0.5% Everyone else 45.5%

Concentration Top 10 holders own 37.9%

Affinity Asset Advisors, LLC 6.2% · Cormorant Asset Management, LP 5.6%

Institutional ownership

54.0%

+23.8 pts vs last qtr

Institutional holders

+3 vs last qtr

Net shares bought

+15.3M

by institutions in Q2 2026

New / sold out

16 / 13

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

Cormorant Asset Management, LP NEW +3.6M
Silverarc Capital Management, LLC +3.3M

Biggest sellers in Q2 2026

EcoR1 Capital, LLC SOLD OUT −1.6M
Logos Global Management LP SOLD OUT −1.3M

Who is planning to sell?

No insider has filed a notice of proposed sale (Form 144) for iBio Inc in the last 12 months.

Is your stake being diluted?

Diluted share count, FY2023–FY2026

+16903.3%

+454.00% a year

Each share's claim on the business

−99.4%

shrank without buying or selling a share

Spent on buybacks vs paid in stock

— vs $9.33M

over 4 fiscal years

Diluted shares, split-adjusted

Buybacks Stock-based comp

How patient are the owners?

Institutional shares by how long they've been held

5+ years0% 3–5 years0% 1–3 years18% Under 1 year82%

Quarterly turnover

57.9%

of institutional shares changed hands

Top 10 managers, median time held

1 quarter

Super Investors

Investment managers reporting IBIO on Form 13F

Holder	Shares	% of company	Change vs last qtr	Held since	% of their book
AA Affinity Asset Advisors, LLC	4.0M	6.23%	+900.7K (+29.0%)	Q4 '25	0.3%
Shares held by quarter Peak holding4.0M (Q2'26) Change over 8 quarters+4.0M Share of the company6.230% Affinity Asset Advisors, LLC's full portfolio →
CA Cormorant Asset Management, LP	3.6M	5.55%	NEW	Q2 '26	0.3%
Shares held by quarter Peak holding3.6M (Q2'26) Change over 8 quarters+3.6M Share of the company5.550% Cormorant Asset Management, LP's full portfolio →

Affinity Asset Advisors, LLC

4.0M

% of company

6.23%

Change vs last qtr

+900.7K (+29.0%)

Held since

Q4 '25

Cormorant Asset Management, LP

3.6M

% of company

5.55%

Change vs last qtr

NEW

Held since

Q2 '26

28 more super investors behind a free account

See every manager holding iBio Inc, how their position has changed, and how long they've held it.

Institutional Funds

Mutual funds and ETFs reporting IBIO on Form N-PORT; together they hold 4.1% of the company

Fund	Position value	Shares	% of company	% of the fund	As of
VT Vanguard Total Stock Market Index Fund Vanguard Index Funds	$2.57M	1.5M	2.28%	0.00%	June 30, 2026
VE Vanguard Extended Market Index Fund Vanguard Index Funds	$1.02M	582.1K	0.91%	0.00%	June 30, 2026

Vanguard Total Stock Market Index Fund

Vanguard Index Funds

Position value

$2.57M

% of company

2.28%

% of the fund

0.00%

As of

June 30, 2026

Vanguard Extended Market Index Fund

Vanguard Index Funds

Position value

$1.02M

% of company

0.91%

% of the fund

0.00%

As of

June 30, 2026

10 more funds behind a free account

See every fund holding iBio Inc and how much of the fund the position is.

Insiders and 5%+ holders

From Forms 3/4/5 and Schedules 13D/G

Holder	Shares	% of company	Change vs last qtr	8 quarters	Held since	% of their book
PA Parada Antonio Bernardino Guimaraes Insider	183.8K	0.29%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company0.290% Parada Antonio Bernardino Guimaraes's insider activity →
DF Duran Felipe Insider	36.0K	0.06%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company0.060% Duran Felipe's insider activity →

Parada Antonio Bernardino Guimaraes

Insider

183.8K

% of company

0.29%

Change vs last qtr

—

Held since

—

Duran Felipe

Insider

36.0K

% of company

0.06%

Change vs last qtr

—

Held since

—

5 more holders behind a free account

See every insider and 5%+ holder of iBio Inc.

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