Cubist Systematic Strategies, LLC

Holdings History for Spero Therapeutics, Inc. - Common Stock, par value $0.001 per share (SPRO)

Symbol: SPRO on Nasdaq
Investment type: Equity / Common Stock, par value $0.001 per share

Shares, Excluding Options vs Price

Value, Excluding Options

Holdings date	Weight	Change	Value $	Shares	Change	Activity %	Price	All Holders
30 Sep 2025	0%	+0%	$76,789	40,845	+13,705	+50%	$1.88	Q3 2025
30 Jun 2025	0%	+0%	$78,706	27,140	+27,140	NEW	$2.90	Q2 2025
30 Jun 2022		-0%	$0	0	-14,144	-100%	$2.37	Q2 2022
31 Mar 2022	0%	+0%	$123,000	14,144	+14,144	NEW	$8.70	Q1 2022
31 Dec 2018		-0%	$0	0	-1,006	-100%	$2.37	Q4 2018
30 Sep 2018	0%	+0%	$11,000	1,006	+1,006	NEW	$10.93	Q3 2018

* Reported Price is the price of the security as of the portfolio date. This value is significant in that it is the last known price at which the security was still held.
An asterisk sign (*) next to the price indicates that the price is likely invalid.