MPM Asset Management’s Histogen Inc. Common Stock HSTO Stock Holding History

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2019 Q2	–	Sell	-12,324	Closed	-$2.66M	–	6
2019 Q1	$2.66M	Hold	12,324	–	–	1.1%	6
2018 Q4	$4.26M	Hold	12,324	–	–	3.61%	4
2018 Q3	$14.3M	Hold	12,324	–	–	9.68%	4
2018 Q2	$10.5M	Hold	12,324	–	–	4.09%	4
2018 Q1	$14.5M	Buy	12,324 +1,818	+17%	+$2.01M	5.57%	4
2017 Q4	$9.71M	Buy	10,506 +4,546	+76%	+$4.2M	3.89%	5
2017 Q3	$6.54M	Hold	5,960	–	–	3.19%	4
2017 Q2	$6.87M	Hold	5,960	–	–	2.98%	4
2017 Q1	$6.88M	Hold	5,960	–	–	3.31%	5
2016 Q4	$6.28M	Hold	5,960	–	–	2.97%	6
2016 Q3	$2.38M	Hold	5,960	–	–	0.78%	7
2016 Q2	$2.46M	Hold	5,960	–	–	0.8%	9
2016 Q1	$2.55M	Hold	5,960	–	–	0.79%	9
2015 Q4	$3.43M	Hold	5,960	–	–	0.61%	9
2015 Q3	$5.3M	Hold	5,960	–	–	0.82%	10
2015 Q2	$6.14M	Hold	5,960	–	–	1.03%	10
2015 Q1	$8.49M	Hold	5,960	–	–	1.81%	10
2014 Q4	$8.35M	Hold	5,960	–	–	1.85%	10
2014 Q3	$7.3M	Hold	5,960	–	–	2.39%	8
2014 Q2	$10.9M	Hold	5,960	–	–	3.65%	7
2014 Q1	$9.7M	Hold	5,960	–	–	4.11%	7
2013 Q4	$7.69M	Hold	5,960	–	–	2.48%	8
2013 Q3	$12M	Buy	+5,960	New	+$11.1M	3.38%	7