PROK

Prokidney Corp.

Insider trading activity for Prokidney Corp., straight from SEC Form 4 filings. Net figures below count open-market buys and sales only — grants, option exercises and tax withholding are excluded because they are compensation, not decisions to trade.

Past 3 months

-$1.1M

net selling

Bought(0 · 0 insiders): $0
Sold(6 · 1 insiders): $1.1M

Past 6 months

-$1.1M

net selling

Bought(0 · 0 insiders): $0
Sold(6 · 1 insiders): $1.1M

Past 12 months

-$3M

net selling

Bought(0 · 0 insiders): $0
Sold(10 · 1 insiders): $3M

Transaction history

The 53 most recent Form 4 transactions.

Open in screener →

Insider transactions, newest first: date, security, transaction type, size and a link to the filing each row came from.
Date	Insider	Role	Type	Shares	Price	Value	Δ Own	Filing
Aug 20	Pereira Brian JG	Director	SSELL	27,052	$1.42	$38.4K	-100.0%	Open the original filing on SEC.gov
Aug 20	Pereira Brian JG	Director	SSELL	222,948	$1.42	$316.6K	-100.0%	Open the original filing on SEC.gov
Aug 19	Pereira Brian JG	Director	SSELL	27,051	$1.44	$39K	-50.0%	Open the original filing on SEC.gov
Aug 19	Pereira Brian JG	Director	SSELL	222,949	$1.44	$321.2K	-50.0%	Open the original filing on SEC.gov
Aug 18	Pereira Brian JG	Director	SSELL	27,826	$1.37	$38.2K	-34.0%	Open the original filing on SEC.gov
Aug 18	Pereira Brian JG	Director	SSELL	229,338	$1.37	$314.5K	-34.0%	Open the original filing on SEC.gov
Aug 4	Pereira Brian JG	Director	CCONV◆	675,235	—	—	—	Open the original filing on SEC.gov
Aug 4	Pereira Brian JG	Director	CCONV◆	675,235	—	—	—	Open the original filing on SEC.gov
Aug 4	Pereira Brian JG	Director	CCONV◆	81,929	—	—	—	Open the original filing on SEC.gov
Aug 4	Pereira Brian JG	Director	CCONV◆	81,929	—	—	—	Open the original filing on SEC.gov
Aug 4	Pereira Brian JG	Director	CCONV	675,235	—	—	—	Open the original filing on SEC.gov
Aug 4	Pereira Brian JG	Director	CCONV	81,929	—	—	—	Open the original filing on SEC.gov
Jul 1	Locke Kenneth Thomas	Chief Technical Officer	AGRANT◆	750,000	—	—	—	Open the original filing on SEC.gov
Jun 12	Girolamo Todd C	Chief Legal Officer	CCONV◆	163,857	—	—	—	Open the original filing on SEC.gov
Jun 12	Girolamo Todd C	Chief Legal Officer	CCONV◆	163,857	—	—	—	Open the original filing on SEC.gov
Jun 12	Girolamo Todd C	Chief Legal Officer	CCONV	163,857	—	—	+100.0%	Open the original filing on SEC.gov
May 28	Sinha Uma	Director	AGRANT◆	135,000	—	—	—	Open the original filing on SEC.gov
May 28	Pereira Brian JG	Director	AGRANT◆	135,000	—	—	—	Open the original filing on SEC.gov
May 28	Lotvin Alan	Director	AGRANT◆	135,000	—	—	—	Open the original filing on SEC.gov
May 28	Legorreta Pablo G.	Director, 10% Owner	AGRANT◆	135,000	—	—	—	Open the original filing on SEC.gov
May 28	Jimenez Santos Jose…	Director	AGRANT◆	135,000	—	—	—	Open the original filing on SEC.gov
May 28	Fox Jennifer A.	Director	AGRANT◆	135,000	—	—	—	Open the original filing on SEC.gov
May 28	Doyle William F	Director	AGRANT◆	135,000	—	—	—	Open the original filing on SEC.gov
Apr 28	Control Empresarial de…	10% Owner	CCONV◆	63.1M	—	—	—	Open the original filing on SEC.gov
Apr 28	Control Empresarial de…	10% Owner	CCONV◆	63.1M	—	—	—	Open the original filing on SEC.gov
Apr 28	Control Empresarial de…	10% Owner	CCONV	63.1M	—	—	+588.6%	Open the original filing on SEC.gov
Mar 1	Weber Darin J.	Chief Regulatory Officer	AGRANT◆	400,000	—	—	—	Open the original filing on SEC.gov
Mar 1	Girolamo Todd C	Chief Legal Officer	AGRANT◆	600,000	—	—	—	Open the original filing on SEC.gov
Mar 1	Culleton Bruce	Chief Executive Officer	AGRANT◆	3M	—	—	—	Open the original filing on SEC.gov
Mar 1	Coulston James	Chief Financial Officer	AGRANT◆	600,000	—	—	—	Open the original filing on SEC.gov
Nov 13, 2025	Pereira Brian JG	Director	SSELL	54,333	$2.37	$128.8K	-100.0%	Open the original filing on SEC.gov
Nov 13, 2025	Pereira Brian JG	Director	SSELL	447,803	$2.37	$1.1M	-100.0%	Open the original filing on SEC.gov
Nov 12, 2025	Pereira Brian JG	Director	SSELL	27,595	$2.72	$75.2K	-33.7%	Open the original filing on SEC.gov
Nov 12, 2025	Pereira Brian JG	Director	SSELL	227,431	$2.72	$619.4K	-33.7%	Open the original filing on SEC.gov
Jul 8, 2025	Weber Darin J.	Chief Regulatory Officer	SSELL◷	103,480	$3.02	$312.5K	-100.0%	Open the original filing on SEC.gov
Jun 3, 2025	Legorreta Pablo G.	Director, 10% Owner	CCONV◆	3.8M	—	—	—	Open the original filing on SEC.gov
Jun 3, 2025	Legorreta Pablo G.	Director, 10% Owner	CCONV◆	3.8M	—	—	—	Open the original filing on SEC.gov
Jun 3, 2025	Legorreta Pablo G.	Director, 10% Owner	JOTHER	3.8M	—	—	-14.5%	Open the original filing on SEC.gov
Jun 3, 2025	Legorreta Pablo G.	Director, 10% Owner	CCONV	3.8M	—	—	+16.9%	Open the original filing on SEC.gov
May 29, 2025	Sinha Uma	Director	AGRANT◆	125,862	—	—	—	Open the original filing on SEC.gov
May 29, 2025	Pereira Brian JG	Director	AGRANT◆	125,862	—	—	—	Open the original filing on SEC.gov
May 29, 2025	Lotvin Alan	Director	AGRANT◆	125,862	—	—	—	Open the original filing on SEC.gov
May 29, 2025	Legorreta Pablo G.	Director, 10% Owner	AGRANT◆	125,862	—	—	—	Open the original filing on SEC.gov
May 29, 2025	Jimenez Santos Jose…	Director	AGRANT◆	125,862	—	—	—	Open the original filing on SEC.gov
May 29, 2025	Fox Jennifer A.	Director	AGRANT◆	125,862	—	—	—	Open the original filing on SEC.gov
May 29, 2025	Doyle William F	Director	AGRANT◆	125,862	—	—	—	Open the original filing on SEC.gov
Apr 22, 2025	Control Empresarial de…	10% Owner	PBUY	387,393	$0.7134	$276.4K	+0.5%	Open the original filing on SEC.gov
Apr 17, 2025	Control Empresarial de…	10% Owner	PBUY	25,000	$0.7476	$18.7K	+<0.1%	Open the original filing on SEC.gov
Apr 16, 2025	Control Empresarial de…	10% Owner	PBUY	100,000	$0.7482	$74.8K	+0.1%	Open the original filing on SEC.gov
Apr 15, 2025	Control Empresarial de…	10% Owner	PBUY	468,000	$0.6966	$326K	+0.6%	Open the original filing on SEC.gov
Apr 14, 2025	Control Empresarial de…	10% Owner	PBUY	268,105	$0.7258	$194.6K	+0.4%	Open the original filing on SEC.gov
Apr 11, 2025	Control Empresarial de…	10% Owner	PBUY	1,900	$0.6081	$1.2K	0.0%	Open the original filing on SEC.gov
Apr 10, 2025	Control Empresarial de…	10% Owner	PBUY	1M	$0.6081	$627.7K	+1.4%	Open the original filing on SEC.gov

SSELL$38.4K

Pereira Brian JG · DirectorAug 20

27,052 sh @ $1.42 · -100.0% own

SSELL$316.6K

Pereira Brian JG · DirectorAug 20

222,948 sh @ $1.42 · -100.0% own

SSELL$39K

Pereira Brian JG · DirectorAug 19

27,051 sh @ $1.44 · -50.0% own

SSELL$321.2K

Pereira Brian JG · DirectorAug 19

222,949 sh @ $1.44 · -50.0% own

SSELL$38.2K

Pereira Brian JG · DirectorAug 18

27,826 sh @ $1.37 · -34.0% own

SSELL$314.5K

Pereira Brian JG · DirectorAug 18

229,338 sh @ $1.37 · -34.0% own

CCONV◆—

Pereira Brian JG · DirectorAug 4

675,235 sh

CCONV◆—

Pereira Brian JG · DirectorAug 4

675,235 sh

CCONV◆—

Pereira Brian JG · DirectorAug 4

81,929 sh

CCONV◆—

Pereira Brian JG · DirectorAug 4

81,929 sh

CCONV—

Pereira Brian JG · DirectorAug 4

675,235 sh

CCONV—

Pereira Brian JG · DirectorAug 4

81,929 sh

AGRANT◆—

Locke Kenneth Thomas · Chief Technical…Jul 1

750,000 sh

CCONV◆—

Girolamo Todd C · Chief Legal…Jun 12

163,857 sh

CCONV◆—

Girolamo Todd C · Chief Legal…Jun 12

163,857 sh

CCONV—

Girolamo Todd C · Chief Legal…Jun 12

163,857 sh · +100.0% own

AGRANT◆—

Sinha Uma · DirectorMay 28

135,000 sh

AGRANT◆—

Pereira Brian JG · DirectorMay 28

135,000 sh

AGRANT◆—

Lotvin Alan · DirectorMay 28

135,000 sh

AGRANT◆—

Legorreta Pablo G. · Director, 10%…May 28

135,000 sh

AGRANT◆—

Jimenez Santos Jose… · DirectorMay 28

135,000 sh

AGRANT◆—

Fox Jennifer A. · DirectorMay 28

135,000 sh

AGRANT◆—

Doyle William F · DirectorMay 28

135,000 sh

CCONV◆—

Control Empresarial de… · 10% OwnerApr 28

63.1M sh

CCONV◆—

Control Empresarial de… · 10% OwnerApr 28

63.1M sh

CCONV—

Control Empresarial de… · 10% OwnerApr 28

63.1M sh · +588.6% own

AGRANT◆—

Weber Darin J. · Chief Regulatory…Mar 1

400,000 sh

AGRANT◆—

Girolamo Todd C · Chief Legal…Mar 1

600,000 sh

AGRANT◆—

Culleton Bruce · Chief Executive…Mar 1

3M sh

AGRANT◆—

Coulston James · Chief Financial…Mar 1

600,000 sh

SSELL$128.8K

Pereira Brian JG · DirectorNov 13, 2025

54,333 sh @ $2.37 · -100.0% own

SSELL$1.1M

Pereira Brian JG · DirectorNov 13, 2025

447,803 sh @ $2.37 · -100.0% own

SSELL$75.2K

Pereira Brian JG · DirectorNov 12, 2025

27,595 sh @ $2.72 · -33.7% own

SSELL$619.4K

Pereira Brian JG · DirectorNov 12, 2025

227,431 sh @ $2.72 · -33.7% own

SSELL◷$312.5K

Weber Darin J. · Chief Regulatory…Jul 8, 2025

103,480 sh @ $3.02 · -100.0% own

CCONV◆—

Legorreta Pablo G. · Director, 10%…Jun 3, 2025

3.8M sh

CCONV◆—

Legorreta Pablo G. · Director, 10%…Jun 3, 2025

3.8M sh

JOTHER—

Legorreta Pablo G. · Director, 10%…Jun 3, 2025

3.8M sh · -14.5% own

CCONV—

Legorreta Pablo G. · Director, 10%…Jun 3, 2025

3.8M sh · +16.9% own

AGRANT◆—

Sinha Uma · DirectorMay 29, 2025

125,862 sh

AGRANT◆—

Pereira Brian JG · DirectorMay 29, 2025

125,862 sh

AGRANT◆—

Lotvin Alan · DirectorMay 29, 2025

125,862 sh

AGRANT◆—

Legorreta Pablo G. · Director, 10%…May 29, 2025

125,862 sh

AGRANT◆—

Jimenez Santos Jose… · DirectorMay 29, 2025

125,862 sh

AGRANT◆—

Fox Jennifer A. · DirectorMay 29, 2025

125,862 sh

AGRANT◆—

Doyle William F · DirectorMay 29, 2025

125,862 sh

PBUY$276.4K

Control Empresarial de… · 10% OwnerApr 22, 2025

387,393 sh @ $0.7134 · +0.5% own

PBUY$18.7K

Control Empresarial de… · 10% OwnerApr 17, 2025

25,000 sh @ $0.7476 · +<0.1% own

PBUY$74.8K

Control Empresarial de… · 10% OwnerApr 16, 2025

100,000 sh @ $0.7482 · +0.1% own

PBUY$326K

Control Empresarial de… · 10% OwnerApr 15, 2025

468,000 sh @ $0.6966 · +0.6% own

PBUY$194.6K

Control Empresarial de… · 10% OwnerApr 14, 2025

268,105 sh @ $0.7258 · +0.4% own

PBUY$1.2K

Control Empresarial de… · 10% OwnerApr 11, 2025

1,900 sh @ $0.6081 · 0.0% own

PBUY$627.7K

Control Empresarial de… · 10% OwnerApr 10, 2025

1M sh @ $0.6081 · +1.4% own

Filing record

How quickly insiders here report their trades. Section 16 allows two business days from the transaction.

All 31 filings we hold were filed within the two-business-day deadline.

Counted in business days from the transaction date, or the deemed execution date where the filing reports one, excluding weekends and federal holidays. How this is measured · All late filings

Insiders at this company

Everyone who has filed a Form 4 for this issuer.

More biotech & pharma companies

Other issuers in the same industry with insider filings on record.

Whole sector →