CSS LLC

SEC CIK: 0001103646
Latest filing: Aug 14, 2026

SEC filings (opens in a new tab)

PROK holding history

Prokidney Corp. in every 13F filed by CSS LLC, including the quarters it was sold out or no filing was made. Changes compare share counts with the previous calendar quarter.

PROK overview All 13F holders of PROK Full Q2 2026 holdings

Shares (Q2 2022): 0; Sold out in Q2 2022
Value: $0
% of portfolio: 0.0%
Quarters held: 2; Since Q2 2021

Holdings of PROK by CSS LLC, by quarter
Quarter	Shares	Value	% of portfolio	Share change	Action	All holders
Q2 2022	0	$0	0.0%	−83,779−100.0%	Sold out	Holders
Q1 2022	83,779	$830.0K	<0.1%	+83,779	New	Holders
Q3 2021	0	$0	0.0%	−75,000−100.0%	Sold out	Holders
Q2 2021	75,000	$758.0K	<0.1%	+75,000	New	Holders