Castle Biosciences, Inc. (CSTL) Balance Sheet
CSTL balance sheet, 2025
December 31, 2025 · U.S. dollars$578.6M assets = $107.7M liabilities + $470.9M equity
Both columns are drawn to the same scale: what CSTL owns equals what it owes plus shareholders’ equity. Hover a block for its value.
CSTL financial health
Descriptive bands, not a rating. Fiscal 2025.
CSTL balance sheet trends, 2017–2025
| Metric | Trend | Then | Latest | Change |
|---|---|---|---|---|
| Total assets | $9.8M2017 | $578.6M2025 | +66.4%/yr | |
| Total liabilities | $24.1M2017 | $107.7M2025 | +20.6%/yr | |
| Shareholders’ equity | −$14.3M2017 | $470.9M2025 | — | |
| Cash & short-term investments | $1.2M2017 | $299.5M2025 | +99.1%/yr | |
| Total debt | $18.6M2017 | $36.9M2025 | +8.9%/yr | |
| Net cash (debt) | −$17.4M2017 | $262.6M2025 | +$280.0M | |
| Working capital | $1.5M2017 | $292.4M2025 | +$291.0M | |
| Book value per share | −$1.462017 | $16.242025 | — | |
| Current ratio | 1.282017 | 5.262025 | +3.98 | |
| Debt / equity | 0.302019 | 0.082025 | −0.22 | |
| Shares outstanding | 9.8M2017 | 29.0M2025 | +14.5%/yr |
Change is the average annual growth (CAGR) or the difference between the first and latest year.
CSTL assets
CSTL liabilities and equity
CSTL debt vs cash
Debt includes short- and long-term borrowings and, where reported, lease obligations.
CSTL balance sheet
| 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|
| Assets | |||||||||
| Cash & short-term investments | $299.5M | $293.1M | $243.1M | $258.6M | $329.6M | $409.9M | $98.8M | $4.5M | $1.2M |
| Cash & equivalents | $116.7M | $119.7M | $98.8M | $122.9M | $329.6M | $409.9M | $98.8M | $4.5M | $1.2M |
| Short-term investments | $182.8M | $173.4M | $144.3M | $135.7M | $0 | — | — | $0 | $0 |
| Receivables | $43.4M | $51.2M | $38.3M | $23.5M | $17.3M | $12.8M | $14.6M | $12.1M | $4.7M |
| Inventory | $10.3M | $8.1M | $7.9M | $4.0M | $2.0M | $2.2M | $1.2M | $882,233 | $304,576 |
| Other current assets | $8.0M | $7.7M | $6.3M | $6.2M | $4.8M | $4.8M | $2.0M | $675,281 | $515,510 |
| Total current assets | $361.1M | $360.2M | $295.6M | $292.3M | $353.7M | $429.6M | $116.7M | $18.1M | $6.7M |
| Property, plant & equipment (net) | $112.2M | $62.7M | $37.7M | $26.5M | $16.9M | $7.1M | $2.1M | $1.5M | $1.5M |
| Goodwill & intangible assets | $99.6M | $106.2M | $117.3M | $126.3M | $88.9M | $0 | $0 | $4,167 | $40,119 |
| Long-term investments | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 |
| Other non-current assets | $5.6M | $2.1M | $2.6M | $2.2M | $3.0M | $2.6M | $1.0M | $2.7M | $1.6M |
| Total assets | $578.6M | $531.2M | $453.3M | $447.3M | $462.6M | $439.3M | $119.7M | $22.4M | $9.8M |
| Liabilities | |||||||||
| Accounts payable | $18.7M | $6.9M | $10.3M | $4.7M | $2.5M | $2.1M | $1.9M | $1.5M | $1.1M |
| Short-term debt | $1.7M | $1.9M | $1.1M | $1.8M | $1.2M | $5.8M | $5.8M | $0 | $1.0M |
| Deferred revenue | — | — | — | — | — | $6.6M | — | — | $9,731 |
| Total current liabilities | $68.7M | $49.4M | $47.7M | $36.1M | $24.9M | $20.9M | $15.3M | $6.7M | $5.2M |
| Long-term debt | $9.6M | $9.7M | $0 | $0 | $0 | $0 | $19.3M | $24.5M | $17.6M |
| Lease obligations | $26.9M | $16.3M | $15.3M | $13.3M | $8.1M | $0 | — | $0 | $0 |
| Other long-term liabilities | $29.4M | $16.3M | $14.4M | $12.1M | $25.9M | $2.8M | $55,000 | $1.2M | $1.3M |
| Total liabilities | $107.7M | $75.4M | $62.1M | $48.2M | $50.8M | $23.6M | $34.6M | $32.5M | $24.1M |
| Shareholders' equity | |||||||||
| Common stock & paid-in capital | $30,000 | $28,000 | $27,000 | $27,000 | $25,000 | $25,000 | $17,000 | $1,916 | $1,896 |
| Retained earnings (deficit) | −$224.3M | −$200.1M | −$218.4M | −$160.9M | −$93.8M | −$62.5M | −$52.2M | −$57.5M | −$51.1M |
| Treasury stock | — | — | — | — | — | — | — | $0 | $0 |
| Accumulated other comprehensive income | $267,000 | $230,000 | $136,000 | −$381,000 | — | $0 | −$119.7M | −$909,385 | −$638,466 |
| Minority interest | — | — | — | — | — | — | — | $0 | $0 |
| Total shareholders' equity | $470.9M | $455.8M | $391.3M | $399.1M | $411.7M | $415.7M | $85.1M | −$10.1M | −$14.3M |
| Key figures | |||||||||
| Total debt | $36.9M | $26.3M | $15.3M | $13.4M | $8.2M | $5.8M | $25.1M | $24.5M | $18.6M |
| Net cash (debt) | $262.6M | $266.8M | $227.8M | $245.2M | $321.4M | $404.0M | $73.7M | −$20.0M | −$17.4M |
| Working capital | $292.4M | $310.8M | $248.0M | $256.2M | $328.9M | $408.7M | $101.4M | $11.4M | $1.5M |
| Tangible book value | $371.3M | $349.6M | $273.9M | $272.8M | $322.8M | $415.7M | $85.1M | −$10.1M | −$14.3M |
| Book value per share | $16.24 | $15.58 | $14.60 | $15.32 | $16.38 | $21.96 | $9.83 | −$0.95 | −$1.46 |
| Shares outstanding | 29.0M | 29.3M | 26.8M | 26.1M | 25.1M | 18.9M | 8.7M | 10.7M | 9.8M |
| Current ratio | 5.26 | 7.29 | 6.20 | 8.09 | 14.21 | 20.58 | 7.63 | 2.69 | 1.28 |
| Quick ratio | 4.99 | 6.97 | 5.90 | 7.81 | 13.94 | 20.24 | 7.42 | 2.46 | 1.12 |
| Debt / equity | 0.08 | 0.06 | 0.04 | 0.03 | 0.02 | 0.01 | 0.30 | — | — |
| Equity / assets | 81.4% | 85.8% | 86.3% | 89.2% | 89.0% | 94.6% | 71.1% | −44.9% | −145.3% |
| Jun '26 | Mar '26 | Dec '25 | Sep '25 | Jun '25 | Mar '25 | Dec '24 | Sep '24 | Jun '24 | Mar '24 | Dec '23 | Sep '23 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Assets | ||||||||||||
| Cash & short-term investments | $266.8M | $261.7M | $299.5M | $287.5M | $275.9M | $275.2M | $293.1M | $279.8M | $259.7M | $239.2M | $243.1M | $229.8M |
| Cash & equivalents | $62.1M | $63.8M | $116.7M | $85.6M | $82.2M | $89.7M | $119.7M | $95.0M | $85.6M | $82.9M | $98.8M | $91.2M |
| Short-term investments | $204.7M | $197.9M | $182.8M | $202.0M | $193.7M | $185.5M | $173.4M | $184.8M | $174.1M | $156.3M | $144.3M | $138.5M |
| Receivables | $48.3M | $42.3M | $43.4M | $49.5M | $52.3M | $56.4M | $51.2M | $50.3M | $46.0M | $42.7M | $38.3M | $37.0M |
| Inventory | $10.6M | $10.5M | $10.3M | $8.7M | $8.4M | $6.8M | $8.1M | $6.6M | $8.0M | $7.6M | $7.9M | $5.8M |
| Other current assets | $15.4M | $14.5M | $8.0M | $11.9M | $12.1M | $11.0M | $7.7M | $8.2M | $6.7M | $6.2M | $6.3M | $7.1M |
| Total current assets | $341.1M | $328.9M | $361.1M | $357.6M | $348.7M | $349.4M | $360.2M | $344.8M | $320.4M | $295.8M | $295.6M | $279.6M |
| Property, plant & equipment (net) | $118.9M | $115.4M | $112.2M | $100.0M | $89.6M | $66.6M | $62.7M | $56.3M | $50.3M | $44.9M | $37.7M | $33.9M |
| Goodwill & intangible assets | $95.1M | $97.3M | $99.6M | $101.8M | $104.1M | $77.9M | $106.2M | $110.6M | $112.8M | $115.1M | $117.3M | $119.6M |
| Long-term investments | $0 | $0 | $0 | $0 | $0 | $5.6M | $0 | $0 | $0 | $0 | $0 | $0 |
| Other non-current assets | $6.1M | $6.2M | $5.6M | $3.3M | $2.4M | $2.3M | $2.1M | $2.9M | $3.8M | $2.8M | $2.6M | $2.9M |
| Total assets | $561.2M | $547.8M | $578.6M | $562.8M | $544.7M | $501.7M | $531.2M | $514.6M | $487.3M | $458.5M | $453.3M | $436.0M |
| Liabilities | ||||||||||||
| Accounts payable | $9.7M | $15.0M | $18.7M | $12.2M | $13.2M | $8.5M | $6.9M | $6.8M | $9.5M | $9.3M | $10.3M | $6.9M |
| Short-term debt | $4.3M | $2.9M | $1.7M | $1.4M | $3.5M | $2.5M | $1.9M | $1.7M | $1.2M | $1.2M | $1.1M | $1.1M |
| Deferred revenue | — | — | — | — | — | — | — | — | — | −$1.2M | — | — |
| Total current liabilities | $56.5M | $48.8M | $68.7M | $55.3M | $50.9M | $37.3M | $49.4M | $44.3M | $39.5M | $32.0M | $47.7M | $36.3M |
| Long-term debt | $7.2M | $8.4M | $9.6M | $10.0M | $8.1M | $8.9M | $9.7M | $10.0M | $10.0M | $10.0M | $0 | $0 |
| Lease obligations | $26.6M | $26.7M | $26.9M | $27.1M | $27.3M | $15.8M | $16.3M | $16.7M | $15.2M | $15.1M | $15.3M | $14.5M |
| Other long-term liabilities | $27.5M | $29.2M | $29.4M | $30.4M | $30.4M | $15.2M | $16.3M | $19.2M | $14.0M | $14.1M | $14.4M | $13.9M |
| Total liabilities | $91.1M | $86.4M | $107.7M | $95.7M | $89.4M | $61.4M | $75.4M | $73.5M | $63.4M | $56.0M | $62.1M | $50.2M |
| Shareholders' equity | ||||||||||||
| Common stock & paid-in capital | $31,000 | $30,000 | $30,000 | $29,000 | $29,000 | $29,000 | $28,000 | $28,000 | $28,000 | $28,000 | $27,000 | $27,000 |
| Retained earnings (deficit) | −$240.9M | −$238.8M | −$224.3M | −$222.0M | −$221.5M | −$226.0M | −$200.1M | −$209.7M | −$212.0M | −$220.9M | −$218.4M | −$215.8M |
| Accumulated other comprehensive income | −$256,000 | −$63,000 | $267,000 | $239,999 | $39,000 | $131,000 | $230,000 | $473,000 | −$172,000 | −$111,000 | $136,000 | −$71,000 |
| Total shareholders' equity | $470.0M | $461.4M | $470.9M | $467.0M | $455.4M | $440.3M | $455.8M | $441.1M | $423.9M | $402.5M | $391.3M | $385.8M |
| Key figures | ||||||||||||
| Total debt | $36.6M | $36.7M | $36.9M | $37.1M | $37.4M | $25.8M | $26.3M | $26.7M | $25.2M | $25.1M | $15.3M | $14.5M |
| Net cash (debt) | $230.2M | $225.0M | $262.6M | $250.4M | $238.6M | $249.3M | $266.8M | $253.0M | $234.5M | $214.2M | $227.8M | $215.2M |
| Working capital | $284.6M | $280.1M | $292.4M | $302.3M | $297.8M | $312.1M | $310.8M | $300.5M | $281.0M | $263.8M | $248.0M | $243.3M |
| Tangible book value | $374.9M | $364.1M | $371.3M | $365.2M | $351.3M | $362.4M | $349.6M | $330.5M | $311.1M | $287.4M | $273.9M | $266.2M |
| Book value per share | $15.46 | $15.44 | $16.05 | $16.06 | $15.41 | $15.39 | $15.09 | $15.00 | $14.75 | $14.64 | $14.41 | $14.38 |
| Shares outstanding | 30.4M | 29.9M | 29.3M | 29.1M | 29.5M | 28.6M | 30.2M | 29.4M | 28.7M | 27.5M | 27.1M | 26.8M |
| Current ratio | 6.04 | 6.75 | 5.26 | 6.47 | 6.85 | 9.37 | 7.29 | 7.78 | 8.12 | 9.25 | 6.20 | 7.70 |
| Quick ratio | 5.58 | 6.23 | 4.99 | 6.09 | 6.45 | 8.89 | 6.97 | 7.45 | 7.75 | 8.82 | 5.90 | 7.34 |
| Debt / equity | 0.08 | 0.08 | 0.08 | 0.08 | 0.08 | 0.06 | 0.06 | 0.06 | 0.06 | 0.06 | 0.04 | 0.04 |
| Equity / assets | 83.8% | 84.2% | 81.4% | 83.0% | 83.6% | 87.8% | 85.8% | 85.7% | 87.0% | 87.8% | 86.3% | 88.5% |
Quarterly columns are labeled by the month the quarter ended. Figures in U.S. dollars as reported (latest annual report filed February 26, 2026); data from EODHD.
CSTL financial position
At the end of fiscal 2025 (December 31, 2025), Castle Biosciences had total assets of $578.6 million (up 8.9% from a year earlier), total liabilities of $107.7 million and shareholders' equity of $470.9 million. It held $299.5 million in cash and short-term investments against $36.9 million of debt, a net cash position of $262.6 million. Its current ratio was 5.26. In the latest quarter (ended June 30, 2026) total assets were $561.2 million and equity $470.0 million.
Related: CSTL income statement, CSTL cash flow statement, CSTL key metrics. See the CSTL stock overview for the latest quote and news.
CSTL balance sheet FAQ
What are Castle Biosciences's total assets?
Castle Biosciences reported total assets of $578.6 million at the end of fiscal 2025 (December 31, 2025), compared with $531.2 million a year earlier.
How much debt does Castle Biosciences have?
Castle Biosciences had $36.9 million of total debt at the end of fiscal 2025, including short-term borrowings and lease obligations. Its debt-to-equity ratio was 0.08.
How much cash does Castle Biosciences have?
Castle Biosciences held $299.5 million in cash and short-term investments at the end of fiscal 2025; with $36.9 million of debt that is net cash of $262.6 million.
What is Castle Biosciences's book value?
Castle Biosciences's shareholders' equity (book value) was $470.9 million at the end of fiscal 2025, or $16.24 per share.
What is Castle Biosciences's current ratio?
Castle Biosciences had current assets of $361.1 million and current liabilities of $68.7 million, a current ratio of 5.26 (it can cover its short-term obligations).
How much goodwill does Castle Biosciences have?
Castle Biosciences carried $99.6 million of goodwill and intangible assets, 17.2% of total assets, at the end of fiscal 2025.