Spero Therapeutics Inc (SPRO) — Working Capital to Net Assets Ratio
Spero Therapeutics Inc (SPRO) has a Working Capital to Net Assets ratio of 99.0% as of December 2025. Working capital of $58.42 Million (current assets of $67.29 Million minus current liabilities of $8.87 Million) is measured against net assets of $59.02 Million. A higher ratio indicates strong short-term liquidity financed by the equity base. See Spero Therapeutics Inc leverage flexibility ratio to measure the company's free cash flow as a share of total liabilities.
WC/NA Ratio
Working Capital
Current Assets
Current Liabilities
Spero Therapeutics Inc Working Capital to Net Assets (2015–2025)
This chart shows how Spero Therapeutics Inc's Working Capital to Net Assets ratio has evolved across 11 annual periods from 2015 to 2025. As of December 2025, the ratio stands at 99.0%, reflecting working capital of $58.42 Million against net assets of $59.02 Million USD. See Spero Therapeutics Inc (SPRO) defensive interval to measure how many days the company can operate on defensive assets alone.
Annual Working Capital to Net Assets for Spero Therapeutics Inc (2015–2025)
The table below presents the year-by-year Working Capital to Net Assets ratio for Spero Therapeutics Inc from 2015 to 2025, covering 11 annual filings. Each row shows current assets, current liabilities, working capital, net assets, the ratio, and the change in percentage points compared to the prior year. For live market cap and the full company profile, see SPRO market cap overview.
| Year | WC/NA Ratio | Working Capital (USD) | Net Assets | Current Assets | Current Liabilities | Change (pp) |
|---|---|---|---|---|---|---|
| 2025 | 99.0% | $58.42 Million | $59.02 Million | $67.29 Million | $8.87 Million | ▼ -27.2 pp |
| 2024 | 126.2% | $58.20 Million | $46.12 Million | $107.28 Million | $49.07 Million | ▲ +38.2 pp |
| 2023 | 88.0% | $94.06 Million | $106.89 Million | $131.21 Million | $37.15 Million | ▼ -27.2 pp |
| 2022 | 115.2% | $87.46 Million | $75.93 Million | $109.11 Million | $21.65 Million | ▼ -42.5 pp |
| 2021 | 157.7% | $139.20 Million | $88.29 Million | $157.87 Million | $18.67 Million | ▲ +63.1 pp |
| 2020 | 94.5% | $124.80 Million | $132.04 Million | $139.15 Million | $14.34 Million | ▲ +2.3 pp |
| 2019 | 92.2% | $68.75 Million | $74.57 Million | $95.41 Million | $26.66 Million | ▲ +3.2 pp |
| 2018 | 89.0% | $103.12 Million | $115.86 Million | $115.44 Million | $12.32 Million | ▼ -4.1 pp |
| 2017 | 93.1% | $79.13 Million | $84.96 Million | $87.29 Million | $8.16 Million | ▲ +15.3 pp |
| 2016 | 77.9% | $4.95 Million | $6.36 Million | $11.87 Million | $6.92 Million | ▼ -90.6 pp |
| 2015 | 168.5% | $-433.00K | $-257.00K | $5.99 Million | $6.42 Million | — |