Penbrook Management’s Core Laboratories CLB Stock Holding History

Quarter	Market Value	Status	Shares	Shares Change %	Trade Value	Portfolio Weight	Portfolio Position
2021 Q3	–	Sell	-7,428	Closed	-$289K	–	103
2021 Q2	$289K	Hold	7,428	–	–	0.17%	93
2021 Q1	$214K	Buy	+7,428	New	+$214K	0.15%	95
2020 Q1	–	Sell	-7,188	Closed	-$271K	–	104
2019 Q4	$271K	Sell	7,188 -60	-0.8%	-$2.26K	0.26%	91
2019 Q3	$338K	Hold	7,248	–	–	0.37%	78
2019 Q2	$379K	Hold	7,248	–	–	0.41%	76
2019 Q1	$500K	Sell	7,248 -440	-6%	-$30.4K	0.52%	67
2018 Q4	$459K	Sell	7,688 -60	-0.8%	-$3.58K	0.52%	61
2018 Q3	$897K	Sell	7,748 -2,560	-25%	-$296K	0.86%	39
2018 Q2	$1.3M	Sell	10,308 -260	-2%	-$32.8K	1.25%	27
2018 Q1	$1.14M	Sell	10,568 -520	-5%	-$56.3K	1.14%	30
2017 Q4	$1.22M	Buy	+11,088	New	+$1.22M	1.09%	26
2016 Q3	$1.29M	Hold	11,488	–	–	1.39%	21
2016 Q2	$1.42M	Sell	11,488 -200	-2%	-$24.8K	1.57%	14
2016 Q1	$1.32M	Hold	11,688	–	–	1.45%	19
2015 Q4	$1.27M	Hold	11,688	–	–	1.3%	26
2015 Q3	$1.17M	Sell	11,688 -270	-2%	-$27K	1.24%	29
2015 Q2	$1.36M	Hold	11,958	–	–	1.29%	29
2015 Q1	$1.25M	Hold	11,958	–	–	1.11%	33
2014 Q4	$1.44M	Hold	11,958	–	–	1.3%	27
2014 Q3	$1.75M	Hold	11,958	–	–	1.61%	14
2014 Q2	$2M	Sell	11,958 -12,358	-51%	-$2.06M	1.76%	10
2014 Q1	$4.74M	Buy	24,316 +12,108	+99%	+$2.36M	2.27%	8
2013 Q4	$2.33M	Buy	+12,208	New	+$2.33M	2.26%	8