Spero Therapeutics shares owned by Pfizer
Historical chart of Pfizer investment in Spero Therapeutics
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All positions including Spero Therapeutics held by Pfizer consolidated in one spreadsheet with up to 7 years of data
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Quarterly reported holdings in Spero Therapeutics by Pfizer
| Quarter filed | Position value | Share count | Share price at filing |
|---|---|---|---|
| 2025-09-30 | $4.4M | 2.4M | 1.88 |
| 2025-06-30 | $6.9M | 2.4M | 2.90 |
| 2025-03-31 | $1.7M | 2.4M | 0.72 |