$CLYM

$9.57 +$0.76 (8.63%) Close

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

Ownership

13F as of Q2 2026 · 57.4M shares outstanding

Who owns CLYM?

By type of holder

Institutions 98.0% Insiders 2.0% Everyone else 0.0%

Concentration Top 10 holders own 167.6%

Peter Kolchinsky 40.5% · Rajeev Shah 40.5%

Institutional ownership

98.0%

+41.8 pts vs last qtr

Institutional holders

106

+26 vs last qtr

Net shares bought

+24.0M

by institutions in Q2 2026

New / sold out

51 / 25

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

FMR LLC +6.8M
UBS Group AG +3.3M

Biggest sellers in Q2 2026

MPM Bioimpact LLC SOLD OUT −2.6M
Kynam Capital Management, LP SOLD OUT −1.0M

Who is planning to sell?

Notices of proposed sale, last 12 months

$2.74M

4 notices from 2 people

Shares covered

280.9K

0.49% of the company

Arranged in advance

85%

of the value is under a 10b5-1 plan

Under a 10b5-1 plan No plan

Largest proposed sellers

Stephen Thomas Director 10b5-1 $2.33M
Aoife Brennan Officer $407K

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

+2999.5%

+98.73% a year

Each share's claim on the business

−96.8%

shrank without buying or selling a share

Spent on buybacks vs paid in stock

— vs $37.9M

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+ years0% 3–5 years32% 1–3 years31% Under 1 year37%

Quarterly turnover

61.7%

of institutional shares changed hands

Top 10 managers, median time held

1.8 years

Super Investors

Investment managers reporting CLYM on Form 13F

Holder	Shares	% of company	Change vs last qtr	Held since	% of their book
RC Ra Capital Management, L.P. 13D · 33.0%	11.3M	19.68%	Unchanged	2021	1.3%
Shares held by quarter Peak holding31.4M (Q3'24) Change over 8 quarters−20.1M Share of the company19.680% Disclosed stake13D · 33.0% Ra Capital Management, L.P.'s full portfolio →
F FMR LLC	6.8M	11.82%	+6.8M (+106049.2%)	2024	0.0%
Shares held by quarter Peak holding6.8M (Q2'26) Change over 8 quarters+6.8M Share of the company11.820% FMR LLC's full portfolio →

Ra Capital Management, L.P.

13D · 33.0%

11.3M

% of company

19.68%

Change vs last qtr

Unchanged

Held since

2021

FMR LLC

6.8M

% of company

11.82%

Change vs last qtr

+6.8M (+106049.2%)

Held since

2024

28 more super investors behind a free account

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

Institutional Funds

Mutual funds and ETFs reporting CLYM on Form N-PORT; together they hold 26.7% of the company

Fund	Position value	Shares	% of company	% of the fund	As of
FS Fidelity Small Cap Growth Fund Fidelity Securities Fund	$22.4M	1.9M	3.28%	0.25%	July 31, 2026
TR T. Rowe Price Health Sciences Fund, Inc. T. Rowe Price Health Sciences Fund, Inc.	$21.3M	1.6M	2.85%	0.18%	June 30, 2026

Fidelity Small Cap Growth Fund

Fidelity Securities Fund

Position value

$22.4M

% of company

3.28%

% of the fund

0.25%

As of

July 31, 2026

T. Rowe Price Health Sciences Fund, Inc.

Position value

$21.3M

% of company

2.85%

% of the fund

0.18%

As of

June 30, 2026

23 more funds behind a free account

See every fund holding Climb Bio 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
PK Peter Kolchinsky 5%+ holder 13D · 33.0%	23.2M	40.48%	—	—	—	—
This holder reports through Schedule 13D/G, not a quarterly 13F. Share of the company40.480% Disclosed stake13D · 33.0% View the 13D/G filing →
RS Rajeev Shah 5%+ holder 13D · 33.0%	23.2M	40.48%	—	—	—	—
This holder reports through Schedule 13D/G, not a quarterly 13F. Share of the company40.480% Disclosed stake13D · 33.0% View the 13D/G filing →

Peter Kolchinsky

5%+ holder13D · 33.0%

23.2M

% of company

40.48%

Change vs last qtr

—

Held since

—

Rajeev Shah

5%+ holder13D · 33.0%

23.2M

% of company

40.48%

Change vs last qtr

—

Held since

—

5 more holders behind a free account

See every insider and 5%+ holder of Climb Bio Inc.

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