Assenagon Asset Management S.A.

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
31 Dec 2025	0%	-0%	$43,422	18,636	-18,357	-50%	$2.33	Q4 2025
30 Sep 2025	0%	+0%	$69,547	36,993	+36,993	NEW	$1.88	Q3 2025
30 Sep 2022		-0%	$0	0	-131,020	-100%	$2.37	Q3 2022
30 Jun 2022	0%	+0%	$97,000	131,020	+107,897	+467%	$0.74	Q2 2022
31 Mar 2022	0%	+0%	$201,000	23,123	+23,123	NEW	$8.69	Q1 2022
30 Jun 2021		-0.01%	$0	0	-181,578	-100%	$2.37	Q2 2021
31 Mar 2021	0.01%	+0%	$2,673,000	181,578	+57,793	+47%	$14.72	Q1 2021
31 Dec 2020	0.01%	+0.01%	$2,400,000	123,785	+123,785	NEW	$19.39	Q4 2020

* 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.