Penbrook Management LLC

SEC CIK: 0001381055
Latest filing: Jul 23, 2026

SEC filings (opens in a new tab)

CLB holding history

Core Laboratories Inc. in every 13F filed by Penbrook Management LLC, including the quarters it was sold out or no filing was made. Changes compare share counts with the previous calendar quarter.

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

Shares (Q3 2021): 0; Sold out in Q3 2021
Value: $0
% of portfolio: 0.0%
Quarters held: 2; Since Q1 2021

Holdings of CLB by Penbrook Management LLC, by quarter
Quarter	Shares	Value	% of portfolio	Share change	Action	All holders
Q3 2021	0	$0	0.0%	−7,428−100.0%	Sold out	Holders
Q2 2021	7,428	$289.0K	0.2%	00.0%	Unchanged	Holders
Q1 2021	7,428	$214.0K	0.2%	–	–	Holders

Livermore's 13F data starts with Q1 2021, so Q1 2021 has no change from the previous quarter.