Spero Therap

SPRO

1.1800.84% ( -0.010 )

Closed: Jul 27, 16:00:00 (EDT)

SPRO

1.1800.84% ( -0.010 )

Closed: Jul 27, 16:00:00 (EDT)

Major Shareholders Latest
Shareholder
GSK Equity Investments, Limited	15.87%	9.19M	0.42%	+0	03/31/2026
Pfizer Venture Investments LLC	4.08%	2.36M	0.11%	+0	03/31/2026
Vanguard Capital Management, LLC	3.11%	1.80M	--	+1.80M	03/31/2026
Renaissance Technologies LLC	2.05%	1.19M	0.21%	-90.29K	03/31/2026
Esther RajaveluCEO, President, CFO, Chief Business Officer, Treasurer & Director	1.70%	986.85K	1.41%	+818.30K	05/04/2026
GV Management Company, LLC	1.54%	889.98K	0.04%	+0	03/31/2026
Two Sigma Investments, LP	1.53%	885.63K	0.87%	+513.06K	03/31/2026
Geode Capital Management, LLC	0.90%	519.92K	0.04%	-9.27K	03/31/2026
BlackRock, Inc.	0.75%	433.20K	0.02%	-414.00	03/31/2026
Anson Group	0.73%	421.96K	0.38%	-203.11K	03/31/2026
Ankit MahadeviaCo-Founder & Former Director	0.66%	383.80K	0.02%	+0	08/28/2025
Citadel Advisors LLC	0.65%	376.46K	0.06%	-21.41K	03/31/2026
Susquehanna International Group, LLP	0.58%	333.12K	0.05%	+39.42K	03/31/2026
Timothy KeutzerChief Operating Officer	0.50%	288.55K	0.23%	+137.22K	02/06/2026
GSA Capital Partners LLP	0.48%	278.30K	0.16%	+99.37K	03/31/2026
Vanguard Fiduciary Trust Company	0.46%	264.12K	--	+0	03/31/2026
State Street Global Advisors, Inc.	0.37%	214.75K	<0.01%	+4.60K	03/31/2026
Ionic Capital Management LLC	0.34%	195.94K	<0.01%	+0	03/31/2026
Squarepoint OPS LLC	0.34%	194.30K	0.12%	+74.87K	03/31/2026
Marshall Wace LLP	0.27%	157.07K	--	+157.07K	03/31/2026

All Shareholders