$YARW

$20.00 +$0.73 (3.79%) Close

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

Ownership

13F as of Q2 2026 · 2.7M shares outstanding

Who owns YARW?

By type of holder

Institutions 100.0% Insiders 0.0% Everyone else 0.0%

Concentration Top 10 holders own 460.9%

ADAR1 Capital Management, LLC 110.5% · Nantahala Capital Management, LLC 74.9%

Institutional ownership

100.0%

0 pts vs last qtr

Institutional holders

0 vs last qtr

Net shares bought

+185.7K

by institutions in Q2 2026

New / sold out

6 / 6

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

ADAR1 Capital Management, LLC +1.9M
Gsa Capital Partners LLP NEW +71.5K

Biggest sellers in Q2 2026

Anson Funds Management LP −1.2M
Shay Capital LLC −153.6K

Who is planning to sell?

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

Is your stake being diluted?

Diluted share count, FY2023–FY2025

+316.3%

+104.04% a year

Each share's claim on the business

−76.0%

shrank without buying or selling a share

Spent on buybacks vs paid in stock

— vs $8.92M

over 3 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 years5% 1–3 years5% Under 1 year89%

Quarterly turnover

14.2%

of institutional shares changed hands

Top 10 managers, median time held

2 quarters

Super Investors

Investment managers reporting YARW on Form 13F

Holder	Shares	% of company	Change vs last qtr	Held since	% of their book
AC ADAR1 Capital Management, LLC	3.0M	110.50%	+1.9M (+177.3%)	Q4 '25	0.1%
Shares held by quarter Peak holding3.0M (Q2'26) Change over 8 quarters+2.8M Share of the company110.500% ADAR1 Capital Management, LLC's full portfolio →
NC Nantahala Capital Management, LLC	2.0M	74.91%	Unchanged	Q4 '25	0.0%
Shares held by quarter Peak holding2.0M (Q1'26) Change over 8 quarters+2.0M Share of the company74.910% Nantahala Capital Management, LLC's full portfolio →

ADAR1 Capital Management, LLC

3.0M

% of company

110.50%

Change vs last qtr

+1.9M (+177.3%)

Held since

Q4 '25

Nantahala Capital Management, LLC

2.0M

% of company

74.91%

Change vs last qtr

Unchanged

Held since

Q4 '25

28 more super investors behind a free account

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

Institutional Funds

Mutual funds and ETFs reporting YARW on Form N-PORT; together they hold 10.2% of the company

Fund	Position value	Shares	% of company	% of the fund	As of
VE Vanguard Extended Market Index Fund Vanguard Index Funds	$172K	264.6K	9.91%	0.00%	June 30, 2026
FE Fidelity Extended Market Index Fund Fidelity Concord Street Trust	$93K	2.8K	0.11%	0.00%	August 31, 2026

Vanguard Extended Market Index Fund

Vanguard Index Funds

Position value

$172K

% of company

9.91%

% of the fund

0.00%

As of

June 30, 2026

Fidelity Extended Market Index Fund

Fidelity Concord Street Trust

Position value

$93K

% of company

0.11%

% of the fund

0.00%

As of

August 31, 2026

4 more funds behind a free account

See every fund holding Yarrow Bioscience, 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
OA Orbimed Advisors LLC 5%+ holder 13D · 10.0%	266.3K	9.97%	—	—	—	—
This holder reports through Schedule 13D/G, not a quarterly 13F. Share of the company9.970% Disclosed stake13D · 10.0% View the 13D/G filing →
OC OrbiMed Capital GP X, LP 5%+ holder 13D · 8.7%	233.0K	8.73%	—	—	—	—
This holder reports through Schedule 13D/G, not a quarterly 13F. Share of the company8.730% Disclosed stake13D · 8.7% View the 13D/G filing →

Orbimed Advisors LLC

5%+ holder13D · 10.0%

266.3K

% of company

9.97%

Change vs last qtr

—

Held since

—

OrbiMed Capital GP X, LP

5%+ holder13D · 8.7%

233.0K

% of company

8.73%

Change vs last qtr

—

Held since

—

12 more holders behind a free account

See every insider and 5%+ holder of Yarrow Bioscience, Inc..

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