$PBLS

$26.51 +$1.48 (5.91%) Close

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

Ownership

13F as of Q2 2026 · 28.9M shares outstanding

Who owns PBLS?

By type of holder

Institutions 100.0% Insiders 0.0% Everyone else 0.0%

Concentration Top 10 holders own 516.3%

Peter Kolchinsky 100.1% · Rajeev Shah 100.1%

Institutional ownership

100.0%

+100.0 pts vs last qtr

Institutional holders

+79 vs last qtr

Net shares bought

+99.0M

by institutions in Q2 2026

New / sold out

79 / 0

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

Ra Capital Management, L.P. NEW +28.9M
FMR LLC NEW +10.3M

Biggest sellers in Q2 2026

None.

Who is planning to sell?

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

Is your stake being diluted?

There are not yet two fiscal years of reported share counts for Parabilis Medicines Inc.

How patient are the owners?

Institutional shares by how long they've been held

5+ years0% 3–5 years0% 1–3 years0% Under 1 year100%

Quarterly turnover

—

of institutional shares changed hands

Top 10 managers, median time held

0 quarters

Super Investors

Investment managers reporting PBLS on Form 13F

Holder	Shares	% of company	Change vs last qtr	Held since	% of their book
RC Ra Capital Management, L.P. 13D · 23.8%	28.9M	100.09%	NEW	Q2 '26	6.9%
Shares held by quarter Peak holding28.9M (Q2'26) Change over 8 quarters+28.9M Share of the company100.090% Disclosed stake13D · 23.8% Ra Capital Management, L.P.'s full portfolio →
F FMR LLC	10.3M	35.60%	NEW	Q2 '26	0.0%
Shares held by quarter Peak holding10.3M (Q2'26) Change over 8 quarters+10.3M Share of the company35.600% FMR LLC's full portfolio →

Ra Capital Management, L.P.

13D · 23.8%

28.9M

% of company

100.09%

Change vs last qtr

NEW

Held since

Q2 '26

FMR LLC

10.3M

% of company

35.60%

Change vs last qtr

NEW

Held since

Q2 '26

23 more super investors behind a free account

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

Institutional Funds

Mutual funds and ETFs reporting PBLS on Form N-PORT; together they hold 24.0% of the company

Fund	Position value	Shares	% of company	% of the fund	As of
VT Vanguard Total Stock Market Index Fund Vanguard Index Funds	$30.7M	1.1M	3.88%	0.00%	June 30, 2026
VS Vanguard Small-Cap Index Fund Vanguard Index Funds	$22.1M	807.8K	2.79%	0.01%	June 30, 2026

Vanguard Total Stock Market Index Fund

Vanguard Index Funds

Position value

$30.7M

% of company

3.88%

% of the fund

0.00%

As of

June 30, 2026

Vanguard Small-Cap Index Fund

Vanguard Index Funds

Position value

$22.1M

% of company

2.79%

% of the fund

0.01%

As of

June 30, 2026

23 more funds behind a free account

See every fund holding Parabilis Medicines 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 · 23.8%	28.9M	100.09%	—	—	—	—
This holder reports through Schedule 13D/G, not a quarterly 13F. Share of the company100.090% Disclosed stake13D · 23.8% View the 13D/G filing →
RS Rajeev Shah 5%+ holder 13D · 23.8%	28.9M	100.09%	—	—	—	—
This holder reports through Schedule 13D/G, not a quarterly 13F. Share of the company100.090% Disclosed stake13D · 23.8% View the 13D/G filing →

Peter Kolchinsky

5%+ holder13D · 23.8%

28.9M

% of company

100.09%

Change vs last qtr

—

Held since

—

Rajeev Shah

5%+ holder13D · 23.8%

28.9M

% of company

100.09%

Change vs last qtr

—

Held since

—

4 more holders behind a free account

See every insider and 5%+ holder of Parabilis Medicines Inc.

Comments