SPERO THERAPEUTICS INC filings

SEC filings by SPERO THERAPEUTICS INC (ownership)
TypeFiledFilerSubjectShares OwnedPercent Owned
SC 13G2024-02-14Anson Funds Management LPSpero Therapeutics, Inc.4,297,5998.1%EDGAR
SC 13G/A2023-02-14BIOTECHNOLOGY VALUE FUND L PSpero Therapeutics, Inc.00.0%EDGAR
SC 13G/A2023-02-14Aquilo Capital Management, LLCSpero Therapeutics, Inc.00.0%EDGAR
SC 13D/A2023-01-20GSK PLCSpero Therapeutics, Inc.9,190,60617.8%EDGAR
SC 13D/A2022-11-14GSK PLCSpero Therapeutics, Inc.9,190,60620.0%EDGAR
SC 13G/A2022-10-03Aquilo Capital Management, LLCSpero Therapeutics, Inc.1,242,9653.6%EDGAR
SC 13G2022-07-08BlackRock Inc.Spero Therapeutics, Inc.690,7532.1%EDGAR
SC 13G/A2022-03-09Aquilo Capital Management, LLCSpero Therapeutics, Inc.1,642,6555.1%EDGAR
SC 13G/A2022-02-14BIOTECHNOLOGY VALUE FUND L PSpero Therapeutics, Inc.2,169,1026.4%EDGAR
SC 13G/A2022-02-14Aquilo Capital Management, LLCSpero Therapeutics, Inc.3,378,88110.5%EDGAR
SC 13G/A2022-02-03BlackRock Inc.Spero Therapeutics, Inc.1,798,7775.6%EDGAR
SC 13G/A2022-01-25Atlas Venture Fund IX, L.P.Spero Therapeutics, Inc.1,376,9684.3%EDGAR
SC 13D/A2021-09-16GLAXOSMITHKLINE PLCSpero Therapeutics, Inc.1,740,6065.4%EDGAR
SC 13G2021-07-09PFIZER INCSpero Therapeutics, Inc.2,362,3487.4%EDGAR
SC 13D/A2021-02-16Atlas Venture Fund X, L.P.Spero Therapeutics, Inc.1,031,1603.8%EDGAR
SC 13G/A2021-02-16BIOTECHNOLOGY VALUE FUND L PSpero Therapeutics, Inc.1,649,7356.0%EDGAR
SC 13G/A2021-02-16Aquilo Capital Management, LLCSpero Therapeutics, Inc.3,481,88112.8%EDGAR
SC 13G/A2021-02-10GV 2015, L.P.Spero Therapeutics, Inc.889,9793.3%EDGAR
SC 13G/A2021-02-02Atlas Venture Fund IX, L.P.Spero Therapeutics, Inc.1,376,9685.1%EDGAR
SC 13G2021-02-02BlackRock Inc.Spero Therapeutics, Inc.1,731,6006.4%EDGAR