SPERO THERAPEUTICS INC's ticker is SPRO and the CUSIP is 84833T103.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2023 | $692 | +1256.9% | 572 | +1534.3% | 0.00% | – |
| Q2 2023 | $51 | +5000.0% | 35 | -93.5% | 0.00% | – |
| Q1 2023 | $1 | -98.2% | 541 | -98.4% | 0.00% | -100.0% |
| Q4 2022 | $57 | -99.8% | 33,164 | +81.8% | 0.00% | +100.0% |
| Q3 2022 | $37,000 | +94.7% | 18,239 | -27.3% | 0.00% | – |
| Q2 2022 | $19,000 | -82.4% | 25,077 | +101.9% | 0.00% | -100.0% |
| Q1 2022 | $108,000 | -23.4% | 12,423 | +41.7% | 0.00% | -50.0% |
| Q4 2021 | $141,000 | +642.1% | 8,768 | +770.7% | 0.00% | – |
| Q3 2021 | $19,000 | -83.8% | 1,007 | -88.0% | 0.00% | -100.0% |
| Q2 2021 | $117,000 | +154.3% | 8,384 | +166.5% | 0.00% | +200.0% |
| Q1 2021 | $46,000 | +109.1% | 3,146 | +171.2% | 0.00% | 0.0% |
| Q4 2020 | $22,000 | -87.5% | 1,160 | -92.7% | 0.00% | -50.0% |
| Q3 2020 | $176,000 | +375.7% | 15,784 | +475.8% | 0.00% | 0.0% |
| Q2 2020 | $37,000 | +1750.0% | 2,741 | +1129.1% | 0.00% | – |
| Q3 2019 | $2,000 | -75.0% | 223 | -68.9% | 0.00% | -100.0% |
| Q2 2019 | $8,000 | +14.3% | 718 | -35.9% | 0.00% | 0.0% |
| Q4 2018 | $7,000 | – | 1,120 | +2847.4% | 0.00% | – |
| Q3 2018 | $0 | -100.0% | 38 | -72.3% | 0.00% | – |
| Q2 2018 | $2,000 | -91.7% | 137 | -93.4% | 0.00% | -100.0% |
| Q4 2017 | $24,000 | – | 2,089 | – | 0.00% | – |
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Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|---|---|---|
| Atlas Venture Associates IX, LLC | 1,376,968 | $13,247,000 | 23.08% |
| Aquilo Capital Management, LLC | 1,154,356 | $11,099,000 | 4.17% |
| VHCP Management II, LLC | 474,015 | $4,558,000 | 1.20% |
| AWM Investment Company, Inc. | 474,344 | $4,561,000 | 0.89% |
| Alphabet Inc. | 1,112,473 | $10,696,000 | 0.65% |
| BVF INC/IL | 845,405 | $8,129,000 | 0.62% |
| Novo Holdings A/S | 931,099 | $8,948,000 | 0.58% |
| Artal Group S.A. | 500,000 | $4,808,000 | 0.19% |
| Rock Springs Capital Management LP | 525,000 | $5,048,000 | 0.16% |
| Granahan Investment Management | 148,867 | $1,431,000 | 0.07% |