Spero Therapeutics (SPRO) Shareholding Patterns

$1.21

$-0.02 (-1.23%)

As on 27-Aug-2026 11:36EDT

Market cap

$70 Mln

Revenue (TTM)

$43 Mln

P/E Ratio

8.6

P/B Ratio

1.6

Div. Yield

0 %

Shareholding Pattern

Shareholder's Name	Category	Holding (% of equity)	Change in shares (%)	Filing date
Vanguard Group Inc	Institutions	2.71	35.30	31-Mar-2023
Atlas Venture Associates IX, LLC	Institutions	2.62	0.00	31-Mar-2023
Alphabet Inc	Institutions	1.69	0.00	31-Mar-2023
Rock Springs Capital Management LP	Institutions	1.27	0.00	31-Mar-2023
Anson Funds Management LP	Institutions	5.74	104.88	31-Dec-2022
Awm Investment Company Inc	Institutions	2.47	-43.47	31-Dec-2022
Millennium Management LLC	Institutions	1.67	27.31	31-Dec-2022
Murchinson Ltd.	Institutions	1.45	0.00	31-Dec-2022
Murchinson Ltd.	Institutions	1.47	0.00	30-Sep-2022
Millennium Management LLC	Institutions	1.33	118.79	30-Sep-2022
Aquilo Capital Management, LLC	Institutions	15.17	0.75	30-Jun-2022
Bvf Inc	Institutions	8.81	94.85	30-Jun-2022
Atlas Venture Associates IX, LLC	Institutions	3.93	0.00	30-Jun-2022
Vanguard Group Inc	Institutions	3.55	-9.31	30-Jun-2022
Renaissance Technologies Corp	Institutions	2.68	760.69	30-Jun-2022
Rock Springs Capital Management LP	Institutions	2.20	-22.22	30-Jun-2022
D. E. Shaw & Co LP	Institutions	1.85	3,382.43	30-Jun-2022
Artal Group S A	Institutions	1.43	0.00	30-Jun-2022
Novo A/S	Institutions	1.34	0.00	30-Jun-2022
Two Sigma Investments LLC	Institutions	1.25	454.16	30-Jun-2022
BlackRock Inc	Institutions	5.48	-0.21	31-Dec-2021
BlackRock Inc	Institutions	5.50	0.13	30-Jun-2021

Date	Person	Buy / Sell	Transaction Type	No. of Shares	Price ($)	Value ($ K)
02-Feb-2026	Esther Rajavelu	Sell	Market	8,383	2.20	18.44
07-Nov-2025	Esther Rajavelu	Sell	Market	16,992	2.37	40.27
28-Aug-2025	Ankit Mahadevia	Sell	Market	3,336	1.97	6.57
05-Feb-2025	Ankit Mahadevia	Sell	Market	88,742	0.78	69.22
05-Feb-2025	Esther Rajavelu	Sell	Market	26,524	0.78	20.69