Vault-13

PROKIDNEY CORP PROK

SHS CL A · Common Stock · CUSIP 74291D104

70 institutional holders +0 vs Q1 2026
47,755,84947.8m shares reported held*
$97.4mreported value*
22 new 25 added 11 reduced 21 sold out net bought ≈ $10.4m (+5.1m shares)

* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once. Holder counts are more reliable. Implied quarter-end price ≈ $2.04. Options: 5 managers hold calls ($604.9k notional), 3 hold puts ($116.1k).

Trends to Q2 2026

Institutional holders

Managers reporting a position, each quarter

0255075Q2 25: 6Q3 25: 55Q4 25: 62Q1 26: 70Q2 26: 7070Q2 25Q3 25Q4 25Q1 26Q2 26
Numbers
QuarterHolders
Q2 20256
Q3 202555
Q4 202562
Q1 202670
Q2 202670

Buyers vs sellers

Managers adding to or starting a position, vs cutting or selling out

Bought or addedCut or sold out
1000100Q3 25: 53 bought or addedQ3 25: 6 cut or sold outQ3 25Q4 25: 39 bought or addedQ4 25: 25 cut or sold outQ4 25Q1 26: 33 bought or addedQ1 26: 30 cut or sold outQ1 26Q2 26: 47 bought or addedQ2 26: 32 cut or sold outQ2 26
Numbers
QuarterBought or addedCut or sold out
Q3 2025536
Q4 20253925
Q1 20263330
Q2 20264732

Calls vs puts

Options held, notional value, last 4 quarters. P/C = puts ÷ calls

CallsPuts
$0$500k$1m$1.5mQ3 25 calls: $485.0kQ3 25 puts: $1.4mQ3 25P/C 2.87Q4 25 calls: $395.1kQ4 25 puts: $836.0kQ4 25P/C 2.12Q1 26 calls: $73.7kQ1 26 puts: $89.7kQ1 26P/C 1.22Q2 26 calls: $604.9kQ2 26 puts: $116.1kQ2 26P/C 0.19
Numbers
QuarterCallsPutsP/C
Q3 2025$485.0k$1.4m2.87
Q4 2025$395.1k$836.0k2.12
Q1 2026$73.7k$89.7k1.22
Q2 2026$604.9k$116.1k0.19

Biggest buyers

BlackRock, Inc. Added +3,810,111+3.8m
GEODE CAPITAL MANAGEMENT, LLC Added +1,159,738+1.2m
MORGAN STANLEY Added +898,211+898.2k
VANGUARD PORTFOLIO MANAGEMENT LLC New +517,082+517.1k
STATE STREET CORP Added +489,100+489.1k
NORTHERN TRUST CORP Added +423,247+423.2k
Voleon Capital Management LP Added +370,609+370.6k
UBS Group AG Added +336,901+336.9k
Hennion & Walsh Asset Management, Inc. Added +236,056+236.1k
MYDA Advisors LLC Added +212,000+212.0k

Biggest sellers

MILLENNIUM MANAGEMENT LLC Reduced -1,216,872-1.2m
MARSHALL WACE, LLP Sold out -1,011,744-1.0m
Woodline Partners LP Sold out -500,000-500.0k
ExodusPoint Capital Management, LP Sold out -254,353-254.4k
JANE STREET GROUP, LLC Reduced -224,344-224.3k
GOLDMAN SACHS GROUP INC Reduced -218,896-218.9k
BANK OF AMERICA CORP /DE/ Reduced -208,254-208.3k
RENAISSANCE TECHNOLOGIES LLC Reduced -151,394-151.4k
BARCLAYS PLC Reduced -130,163-130.2k
HRT FINANCIAL LP Sold out -118,981-119.0k

Biggest calls

CITADEL ADVISORS LLC Added $199.7k97.9k shares
SIMPLEX TRADING, LLC Added $129.7k63.6k shares
SUSQUEHANNA INTERNATIONAL GROUP, LLP New $127.5k62.5k shares
JANE STREET GROUP, LLC Added $122.8k60.2k shares
GROUP ONE TRADING LLC Added $25.1k12.3k shares

Biggest puts

JANE STREET GROUP, LLC Unchanged $74.3k36.4k shares
CITADEL ADVISORS LLC New $35.9k17.6k shares
SIMPLEX TRADING, LLC Reduced $5.9k2.9k shares

Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.

Major shareholders (over 5%)

Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.

HolderStakeChangeShares Last filed
Control Empresarial de Capitales S.A. de C.V. 13D · may seek influence filed 2026-04-30
Stated purposeDelaware Domestication On July 1, 2025, the Issuer effected a domestication from the Caymans Islands to the State of Delaware (the "Domestication"). Effective as of July 1, 2025, each (i) Class A ordinary share automatically converted into one share of Class A Common Stock of the Issuer and (ii) each Class B ordinary share automatically converted into one share of Class B common stock of the Issuer. Exchange Agreement Prior to April 28, 2026 (the "Transaction Date"), in addition to 10,724,078 shares of Class A Common Stock, the Reporting Persons beneficially owned 63,118,645 shares of Class B common stock of the Issuer held by Control Empresarial, each of which may, subject to the limitations set forth in the Amended and Restated Exchange Agreement and the Holdings LLCA (each as defined… Full filing
36.0% 73.8m≈ $150.6m 2026-04-30

Fell to 5% or below in the last year: MORGAN STANLEY (4.7%, 2026-08-12)

Insider purchases and sales since 1 Apr 2026

Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.

Officers and directors buying vs selling

Number of people, by quarter (10% owners not included)

BuyingSelling
101Q4 24: 0 buyingQ4 24: 0 sellingQ1 25: 0 buyingQ1 25: 0 sellingQ1 25Q2 25: 0 buyingQ2 25: 0 sellingQ3 25: 0 buyingQ3 25: 1 sellingQ3 25Q4 25: 0 buyingQ4 25: 1 sellingQ1 26: 0 buyingQ1 26: 0 sellingQ1 26Q2 26: 0 buyingQ2 26: 0 sellingQ3 26: 0 buyingQ3 26: 1 sellingQ3 26
Numbers
QuarterBuyingBoughtSellingSoldSold under a plan
Q4 20240—0——
Q1 20250—0——
Q2 20250—0——
Q3 20250—1$312.5k$312.5k
Q4 20250—1$1.9m—
Q1 20260—0——
Q2 20260—0——
Q3 20260—1$1.1m—
DateInsiderTradeSharesPrice ValueTheir holding
2026-08-20 Pereira Brian JG Director Sold 222,948 $1.42 $316.6k222.9k shares -100%
2026-08-20 Pereira Brian JG Director Sold 27,052 $1.42 $38.4k27.1k shares -100%
2026-08-19 Pereira Brian JG Director · By Brian J. G. Pereira 2012 Irrevocable Trust Sold 222,949 $1.44 $321.0k222.9k shares -50%
2026-08-19 Pereira Brian JG Director Sold 27,051 $1.44 $39.0k27.1k shares -50%
2026-08-18 Pereira Brian JG Director · By Brian J. G. Pereira 2012 Irrevocable Trust Sold 229,338 $1.37 $314.2k229.3k shares -34%
2026-08-18 Pereira Brian JG Director Sold 27,826 $1.37 $38.1k27.8k shares -34%

Their holding: how much the trade added to or took from the insider's holding (direct, or the trust or fund named). The same trade is sometimes reported by more than one insider, such as a fund and the director who represents it; totals count it once. A value is left blank where the reported price is far from the market price (usually a typo).

Holders, Q2 2026

#ManagerLocationShares Value% of their portfolioChangeShares change
1 MONTANOVA CAPITAL, LLC 0.53% of their portfolio New York, NY 12,341,26612.3m $25.2m $25.2m 0.53% Unchanged
2 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 9,854,1789.9m $20.1m $20.1m 0.00% Added +898.2k +898,211
3 BlackRock, Inc. 0.00% of their portfolio New York, NY 5,197,2275.2m $10.6m $10.6m 0.00% Added +3.8m +3,810,111
4 GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio BOSTON, MA 2,390,1472.4m $4.9m $4.9m 0.00% Added +1.2m +1,159,738
5 Bleichroeder LP 0.73% of their portfolio NEW YORK, NY 2,000,0002.0m $4.1m $4.1m 0.73% Unchanged
6 Hennion & Walsh Asset Management, Inc. 0.11% of their portfolio Parsippany, NJ 1,847,7491.8m $3.8m $3.8m 0.11% Added +236.1k +236,056
7 Artia Global Partners LP 0.70% of their portfolio MIAMI, FL 1,806,9391.8m $3.7m $3.7m 0.70% Unchanged
8 VANGUARD CAPITAL MANAGEMENT LLC 0.00% of their portfolio MALVERN, PA 1,175,2571.2m $2.4m $2.4m 0.00% Added +28.3k +28,320
9 RENAISSANCE TECHNOLOGIES LLC 0.00% of their portfolio NEW YORK, NY 1,099,4001.1m $2.2m $2.2m 0.00% Reduced -151.4k -151,394
10 MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio NEW YORK, NY 1,054,7051.1m $2.2m $2.2m 0.00% Reduced -1.2m -1,216,872
11 STATE STREET CORP 0.00% of their portfolio BOSTON, MA 1,045,9451.0m $2.1m $2.1m 0.00% Added +489.1k +489,100
12 CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio SAN FRANCISCO, CA 781,729781.7k $1.6m $1.6m 0.00% Added +154.0k +153,958
13 UBS Group AG 0.00% of their portfolio ZURICH, V8 671,447671.4k $1.4m $1.4m 0.00% Added +336.9k +336,901
14 NORTHERN TRUST CORP 0.00% of their portfolio CHICAGO, IL 664,827664.8k $1.4m $1.4m 0.00% Added +423.2k +423,247
15 MYDA Advisors LLC 0.32% of their portfolio WOODMERE, NY 640,775640.8k $1.3m $1.3m 0.32% Added +212.0k +212,000
16 VANGUARD FIDUCIARY TRUST CO 0.00% of their portfolio MALVERN, PA 632,149632.1k $1.3m $1.3m 0.00% Added +93.8k +93,778
17 BANK OF AMERICA CORP /DE/ 0.00% of their portfolio CHARLOTTE, NC 545,158545.2k $1.1m $1.1m 0.00% Reduced -208.3k -208,254
18 VANGUARD PORTFOLIO MANAGEMENT LLC 0.00% of their portfolio MALVERN, PA 517,082517.1k $1.1m $1.1m 0.00% New
19 Voleon Capital Management LP 0.02% of their portfolio BERKELEY, CA 473,307473.3k $965.5k $965.5k 0.02% Added +370.6k +370,609
20 Amundi 0.00% of their portfolio Paris, I0 304,151304.2k $620.5k $620.5k 0.00% Added +12.4k +12,443
21 GSA CAPITAL PARTNERS LLP 0.04% of their portfolio LONDON, X0 301,622301.6k $615.0k $615.0k 0.04% Added +98.4k +98,396
22 TWO SIGMA INVESTMENTS, LP 0.00% of their portfolio NEW YORK, NY 273,259273.3k $557.4k $557.4k 0.00% Reduced -73.1k -73,123
23 SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio BALA CYNWYD, PA 252,906252.9k $515.9k $515.9k 0.00% Added +48.4k +48,418
24 GOLDMAN SACHS GROUP INC 0.00% of their portfolio NEW YORK, NY 203,006203.0k $414.1k $414.1k 0.00% Reduced -218.9k -218,896
25 Virtus Investment Advisers, LLC 0.09% of their portfolio HARTFORD, CT 199,510199.5k $407.0k $407.0k 0.09% Added +76.1k +76,122
26 Bank of New York Mellon Corp 0.00% of their portfolio NEW YORK, NY 176,657176.7k $360.4k $360.4k 0.00% Added +165.5k +165,465
27 Squarepoint Ops LLC 0.00% of their portfolio NEW YORK, NY 111,763111.8k $228.0k $228.0k 0.00% Reduced -99.3k -99,344
28 Nuveen, LLC 0.00% of their portfolio CHARLOTTE, NC 101,461101.5k $207.0k $207.0k 0.00% New
29 Susquehanna Portfolio Strategies, LLC 0.00% of their portfolio Bala Cynwyd, PA 97,37897.4k $198.7k $198.7k 0.00% Unchanged
30 FMR LLC 0.00% of their portfolio BOSTON, MA 84,20684.2k $171.8k $171.8k 0.00% Added +74.0k +73,952
31 Abel Hall, LLC 0.03% of their portfolio BATON ROUGE, LA 75,93475.9k $154.9k $154.9k 0.03% New
32 DEUTSCHE BANK AG\ 0.00% of their portfolio FRANKFURT AM MAIN, 2M 75,37375.4k $153.8k $153.8k 0.00% New
33 WELLS FARGO & COMPANY/MN 0.00% of their portfolio SAN FRANCISCO, CA 67,26267.3k $137.2k $137.2k 0.00% New
34 PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio BALTIMORE, MD 62,03962.0k $127.0k $127.0k 0.00% New
35 RHUMBLINE ADVISERS 0.00% of their portfolio BOSTON, MA 54,10154.1k $110.4k $110.4k 0.00% New
36 NEW YORK STATE COMMON RETIREMENT FUND 0.00% of their portfolio ALBANY, NY 45,60045.6k $93.0k $93.0k 0.00% New
37 Invesco Ltd. 0.00% of their portfolio ATLANTA, GA 40,71940.7k $83.1k $83.1k 0.00% New
38 JANE STREET GROUP, LLC 0.00% of their portfolio NEW YORK, NY 39,94139.9k $81.5k $81.5k 0.00% Reduced -224.3k -224,344
39 AXQ CAPITAL, LP 0.01% of their portfolio JERSEY CITY, NJ 37,43037.4k $76.4k $76.4k 0.01% New
40 CITIGROUP INC 0.00% of their portfolio NEW YORK, NY 35,38635.4k $72.2k $72.2k 0.00% Reduced -14.0k -13,998
41 MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. 0.00% of their portfolio CAUSEWAY BAY, K3 34,84234.8k $71.1k $71.1k 0.00% New
42 Vanguard Global Advisers, LLC 0.00% of their portfolio MALVERN, PA 34,07434.1k $69.5k $69.5k 0.00% Unchanged
43 JPMORGAN CHASE & CO 0.00% of their portfolio NEW YORK, NY 32,12532.1k $60.7k $60.7k 0.00% Added +31.4k +31,369
44 CANADA PENSION PLAN INVESTMENT BOARD 0.00% of their portfolio TORONTO ONTARIO, A6 28,20028.2k $57.5k $57.5k 0.00% New
45 Virtus Family Office LLC 0.04% of their portfolio EL PASO, TX 27,50027.5k $56.1k $56.1k 0.04% Unchanged
46 ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio NASHVILLE, TN 26,76026.8k $47.9k $47.9k 0.00% New
47 Police & Firemen's Retirement System of New Jersey 0.00% of their portfolio TRENTON, NJ 25,31025.3k $51.6k $51.6k 0.00% New
48 FNY Investment Advisers, LLC 0.02% of their portfolio NEW YORK, NY 21,00021.0k $42.0k $42.0k 0.02% Added +20.0k +20,000
49 R Squared Ltd 0.02% of their portfolio HONG KONG, K3 17,82217.8k $36.4k $36.4k 0.02% Added +4.1k +4,126
50 INTECH INVESTMENT MANAGEMENT LLC 0.00% of their portfolio WEST PALM BEACH, FL 16,94216.9k $34.6k $34.6k 0.00% New
51 BARCLAYS PLC 0.00% of their portfolio LONDON, X0 16,12116.1k $32.9k $32.9k 0.00% Reduced -130.2k -130,163
52 LETKO, BROSSEAU & ASSOCIATES INC 0.00% of their portfolio MONTREAL, A8 15,90015.9k $32.4k $32.4k 0.00% Unchanged
53 Callan Family Office, LLC 0.00% of their portfolio RADNOR, PA 13,39413.4k $27.3k $27.3k 0.00% Unchanged
54 BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio PARIS, I0 12,30112.3k $25.1k $25.1k 0.00% Added +8.2k +8,180
55 PRUDENTIAL FINANCIAL INC 0.00% of their portfolio NEWARK, NJ 10,88010.9k $22.2k $22.2k 0.00% New
56 EP Wealth Advisors, LLC 0.00% of their portfolio TORRANCE, CA 10,00010.0k $20.4k $20.4k 0.00% New
57 Legal & General Group Plc 0.00% of their portfolio London, X0 7,4107.4k $15.1k $15.1k 0.00% New
58 Ameritas Investment Partners, Inc. 0.00% of their portfolio LINCOLN, NE 6,8676.9k $14.0k $14.0k 0.00% New
59 Russell Investments Group, Ltd. 0.00% of their portfolio Seattle, WA 6,0506.0k $12.3k $12.3k 0.00% New
60 Tower Research Capital LLC (TRC) 0.00% of their portfolio NEW YORK, NY 4,8224.8k $9.8k $9.8k 0.00% Reduced -15.6k -15,617
61 IFP Advisors, Inc 0.00% of their portfolio TAMPA, FL 3,0003.0k $6.1k $6.1k 0.00% New
62 ROYAL BANK OF CANADA 0.00% of their portfolio TORONTO, A6 2,4562.5k $5.0k $5.0k 0.00% Added +2.3k +2,266
63 OSAIC HOLDINGS, INC. 0.00% of their portfolio SCOTTSDALE, AZ 950950 $1.9k $1.9k 0.00% Unchanged
64 Sterling Capital Management LLC 0.00% of their portfolio CHARLOTTE, NC 658658 $1.3k $1.3k 0.00% New
65 Basecamp Wealth Advisors LLC 0.00% of their portfolio BELLEVUE, WA 586586 $1.2k $1.2k 0.00% Unchanged
66 SBI Securities Co., Ltd. 0.00% of their portfolio TOKYO, M0 305305 $622 $622 0.00% Added +5 +5
67 Caitong International Asset Management Co., Ltd 0.00% of their portfolio HONG KONG, K3 224224 $457 $457 0.00% Reduced -10.8k -10,768
68 Arax Advisory Partners 0.00% of their portfolio NEW YORK, NY 184184 $375 $375 0.00% Added +123 +123
69 JONES FINANCIAL COMPANIES LLLP 0.00% of their portfolio DES PERES, MO 100100 $183 $183 0.00% Unchanged
70 SIGNATUREFD, LLC 0.00% of their portfolio ATLANTA, GA 7575 $153 $153 0.00% Unchanged