$KROS

$11.33 +$0.05 (0.44%) Close

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

Ownership

13F as of Q2 2026 · 19.8M shares outstanding

Who owns KROS?

By type of holder

Institutions 93.2% Insiders 6.8% Everyone else 0.0%

Concentration Top 10 holders own 53.0%

BlackRock, Inc. 14.1% · Nantahala Capital Management, LLC 7.1%

Institutional ownership

93.2%

-0.6 pts vs last qtr

Institutional holders

130

-21 vs last qtr

Net shares bought

−108.6K

by institutions in Q2 2026

New / sold out

13 / 34

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

Aqr Capital Management LLC +561.3K
Mackenzie Financial Corp +476.0K

Biggest sellers in Q2 2026

Arrowstreet Capital, Limited Partnership −357.1K
D. E. Shaw & Co., Inc. −242.1K

Who is planning to sell?

Notices of proposed sale, last 12 months

$587K

5 notices from 5 people

Shares covered

53.5K

0.27% of the company

Arranged in advance

15%

of the value is under a 10b5-1 plan

Under a 10b5-1 plan No plan

Largest proposed sellers

OrbiMed Genesis Master Fund, LP Shareholder $497K
Farzan Nima Director 10b5-1 $28K

Every notice on Red Flags →

A Form 144 is notice of a planned sale, not the sale itself. What insiders actually sold is on Insider Transactions.

Is your stake being diluted?

Diluted share count, FY2020–FY2025

+144.2%

+19.55% a year

Each share's claim on the business

−59.0%

shrank without buying or selling a share

Spent on buybacks vs paid in stock

$375M vs $127M

over 6 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+ years50% 3–5 years5% 1–3 years36% Under 1 year9%

Quarterly turnover

14.5%

of institutional shares changed hands

Top 10 managers, median time held

5 years

Super Investors

Investment managers reporting KROS on Form 13F

Holder	Shares	% of company	Change vs last qtr	Held since	% of their book
B BlackRock, Inc.	2.8M	14.09%	+382.4K (+15.9%)	≤2021	0.0%
Shares held by quarter Peak holding2.8M (Q2'26) Change over 8 quarters+161.6K Share of the company14.090% BlackRock, Inc.'s full portfolio →
NC Nantahala Capital Management, LLC	1.4M	7.11%	+50.0K (+3.7%)	≤2021	0.5%
Shares held by quarter Peak holding1.6M (Q2'25) Change over 8 quarters+1.0M Share of the company7.110% Nantahala Capital Management, LLC's full portfolio →

BlackRock, Inc.

2.8M

% of company

14.09%

Change vs last qtr

+382.4K (+15.9%)

Held since

≤2021

Nantahala Capital Management, LLC

1.4M

% of company

7.11%

Change vs last qtr

+50.0K (+3.7%)

Held since

≤2021

28 more super investors behind a free account

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

Institutional Funds

Mutual funds and ETFs reporting KROS on Form N-PORT; together they hold 31.7% of the company

Fund	Position value	Shares	% of company	% of the fund	As of
VT Vanguard Total Stock Market Index Fund Vanguard Index Funds	$6.37M	595.3K	3.00%	0.00%	June 30, 2026
IR iShares Russell 2000 ETF iShares Trust	$5.39M	503.9K	2.54%	0.01%	June 30, 2026

Vanguard Total Stock Market Index Fund

Vanguard Index Funds

Position value

$6.37M

% of company

3.00%

% of the fund

0.00%

As of

June 30, 2026

iShares Russell 2000 ETF

iShares Trust

Position value

$5.39M

% of company

2.54%

% of the fund

0.01%

As of

June 30, 2026

23 more funds behind a free account

See every fund holding Keros Therapeutics 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
GC Gordon Carl L Insider	1.2M	5.90%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company5.900% Gordon Carl L's insider activity →
SJ Seehra Jasbir Insider	440.7K	2.22%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company2.220% Seehra Jasbir's insider activity →

Gordon Carl L

Insider

1.2M

% of company

5.90%

Change vs last qtr

—

Held since

—

Seehra Jasbir

Insider

440.7K

% of company

2.22%

Change vs last qtr

—

Held since

—

15 more holders behind a free account

See every insider and 5%+ holder of Keros Therapeutics Inc.

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