$PROK

$1.36 -$0.05 (3.55%) Close

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

Ownership

13F as of Q2 2026 · 61.5M shares outstanding

Who owns PROK?

By type of holder

Institutions 78.7% Insiders 0.0% Everyone else 21.3%

Concentration Top 10 holders own 523.8%

Pablo Legorreta 173.7% · Tolerantia, LLC 173.7%

Institutional ownership

78.7%

+7.7 pts vs last qtr

Institutional holders

-2 vs last qtr

Net shares bought

+4.7M

by institutions in Q2 2026

New / sold out

22 / 24

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

BlackRock, Inc. +3.8M
Geode Capital Management, LLC +1.2M

Biggest sellers in Q2 2026

Millennium Management LLC −1.2M
Marshall Wace, LLP SOLD OUT −1.0M

Who is planning to sell?

Notices of proposed sale, last 12 months

$2.04M

2 notices from 1 person

Shares covered

757.2K

1.23% of the company

Arranged in advance

of the value is under a 10b5-1 plan

Under a 10b5-1 plan No plan

Largest proposed sellers

Brian Pereira Director $2.04M

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?

There are not yet two fiscal years of reported share counts for Prokidney Corp.

How patient are the owners?

Institutional shares by how long they've been held

5+ years0% 3–5 years81% 1–3 years7% Under 1 year11%

Quarterly turnover

17.4%

of institutional shares changed hands

Top 10 managers, median time held

3.8 years

Super Investors

Investment managers reporting PROK on Form 13F

Holder	Shares	% of company	Change vs last qtr	Held since	% of their book
MC Montanova Capital, LLC	12.3M	20.05%	Unchanged	2022	0.5%
Shares held by quarter Peak holding12.3M (Q3'24) Change over 8 quarters0 Share of the company20.050% Montanova Capital, LLC's full portfolio →
MS Morgan Stanley	9.9M	16.01%	+898.2K (+10.0%)	2022	0.0%
Shares held by quarter Peak holding14.3M (Q3'24) Change over 8 quarters−4.4M Share of the company16.010% Morgan Stanley's full portfolio →

Montanova Capital, LLC

12.3M

% of company

20.05%

Change vs last qtr

Unchanged

Held since

2022

Morgan Stanley

9.9M

% of company

16.01%

Change vs last qtr

+898.2K (+10.0%)

Held since

2022

28 more super investors behind a free account

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

Institutional Funds

Mutual funds and ETFs reporting PROK on Form N-PORT; together they hold 18.1% of the company

Fund	Position value	Shares	% of company	% of the fund	As of
IR iShares Russell 2000 ETF iShares Trust	$3.52M	1.7M	2.80%	0.00%	June 30, 2026
VE Vanguard Extended Market Index Fund Vanguard Index Funds	$2.4M	1.2M	1.91%	0.00%	June 30, 2026

iShares Russell 2000 ETF

iShares Trust

Position value

$3.52M

% of company

2.80%

% of the fund

0.00%

As of

June 30, 2026

Vanguard Extended Market Index Fund

Vanguard Index Funds

Position value

$2.4M

% of company

1.91%

% of the fund

0.00%

As of

June 30, 2026

23 more funds behind a free account

See every fund holding Prokidney Corp 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
PL Pablo Legorreta 5%+ holder 13D · 36.5%	106.9M	173.71%	—	—	—	—
This holder reports through Schedule 13D/G, not a quarterly 13F. Share of the company173.710% Disclosed stake13D · 36.5% View the 13D/G filing →
T Tolerantia, LLC 5%+ holder 13D · 36.5%	106.9M	173.71%	—	—	—	—
This holder reports through Schedule 13D/G, not a quarterly 13F. Share of the company173.710% Disclosed stake13D · 36.5% View the 13D/G filing →

Pablo Legorreta

5%+ holder13D · 36.5%

106.9M

% of company

173.71%

Change vs last qtr

—

Held since

—

Tolerantia, LLC

5%+ holder13D · 36.5%

106.9M

% of company

173.71%

Change vs last qtr

—

Held since

—

1 more holders behind a free account

See every insider and 5%+ holder of Prokidney Corp.

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