Leverage is negligible, with a debt-to-equity ratio of roughly 0.03 and total liabilities of $126.1M against $826.9M of equity, though retained earnings remain negative at -$181.9M.
Inspire Medical Systems, Inc. (INSP) balance sheet — 10-year assets, liabilities & shareholders' equity history
| Metric | TTM | Dec'25 | Dec'24 | Dec'23 | Dec'22 | Dec'21 | Dec'20 | Dec'19 | Dec'18 | Dec'17 | Dec'16 |
|---|
| Total Current Assets | 627.63M | 583.65M | 630.81M | 593.74M | 530.03M | 268.54M | 269.87M | 170.64M | 199.28M | 24.1M | 12.25M |
| Cash & Short-Term Investments | 327.97M | 308.27M | 445.55M | 460.38M | 451.41M | 214.47M | 234.36M | 149.47M | 188.21M | 16.14M | 6.68M |
| Cash Only | 190.8M | 104.81M | 150.15M | 185.54M | 441.59M | 214.47M | 190.52M | 22.86M | 97.29M | 8.96M | 6.68M |
| Short-Term Investments | 137.17M | 203.46M | 295.4M | 274.84M | 9.82M | 0 | 43.84M | 126.61M | 90.92M | 7.19M | 0 |
| Accounts Receivable | 104.71M | 119.69M | 93.07M | 89.88M | 61.23M | 34.18M | 25.06M | 13.13M | 6.67M | 3.86M | 2.09M |
| Days Sales Outstanding | 44.83 | 47.9 | 42.31 | 52.51 | 54.79 | 53.45 | 79.29 | 58.41 | 48.1 | 49.29 | 46.46 |
| Inventory | 178.96M | 145.29M | 80.12M | 33.88M | 11.89M | 17.23M | 8.48M | 5.83M | 2.67M | 3.67M | 3.35M |
| Days Inventory Outstanding | 495.56 | 398.06 | 237.78 | 128.07 | 65.62 | 188.99 | 175.61 | 156.08 | 96.8 | 222.59 | 313.59 |
| Other Current Assets | 0 | 10.4M | 12.07M | 9.6M | 5.5M | 0 | 0 | 0 | 1.73M | 426K | 118K |
| Total Non-Current Assets | 325.41M | 323.66M | 177.58M | 83.07M | 34.84M | 26.55M | 11.32M | 10.62M | 802K | 994K | 867K |
| Property, Plant & Equipment | 107.76M | 121.4M | 95.24M | 62.65M | 24.13M | 16.41M | 11.12M | 3.96M | 802K | 994K | 867K |
| Fixed Asset Turnover | 7.34x | 7.51x | 8.43x | 9.97x | 16.90x | 14.23x | 10.38x | 20.72x | 63.08x | 28.74x | 18.95x |
| Goodwill | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Intangible Assets | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Long-Term Investments | 449.12M | 96.33M | 71M | 9.14M | 10.5M | 9.94M | 0 | 6.28M | 0 | 0 | 0 |
| Other Non-Current Assets | 1.03M | 17.26M | 11.34M | 11.28M | 215K | 204K | 204K | 381K | 0 | 0 | 0 |
| Total Assets | 953.03M | 907.32M | 808.38M | 676.81M | 564.88M | 295.08M | 281.19M | 181.25M | 200.08M | 25.09M | 13.12M |
| Asset Turnover | 0.95x | 1.01x | 0.99x | 0.92x | 0.72x | 0.79x | 0.41x | 0.45x | 0.25x | 1.14x | 1.25x |
| Asset Growth % | 71.75% | 12.24% | 19.44% | 19.82% | 91.43% | 4.94% | 55.14% | -9.41% | 697.42% | 91.3% | - |
| Total Current Liabilities | 97.34M | 96.06M | 88.5M | 78.11M | 61.19M | 41.31M | 20.73M | 16.86M | 11.15M | 7.15M | 7.29M |
| Accounts Payable | 38.07M | 36.56M | 38.69M | 38.84M | 26.85M | 11.66M | 7.21M | 4.46M | 3.43M | 3M | 1.17M |
| Days Payables Outstanding | 107.66 | 100.18 | 114.82 | 146.79 | 148.21 | 127.94 | 149.31 | 119.29 | 124.46 | 181.83 | 109.64 |
| Short-Term Debt | 0 | 0 | 0 | 0 | 0 | 9.19M | 0 | 0 | 0 | 0 | 3.31M |
| Deferred Revenue (Current) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Other Current Liabilities | 0 | 8.41M | 0 | 0 | 0 | 0 | 0 | 0 | 1.24M | 555K | 382K |
| Current Ratio | 6.45x | 6.08x | 7.13x | 7.60x | 8.66x | 6.50x | 13.02x | 10.12x | 17.86x | 3.37x | 1.68x |
| Quick Ratio | 4.61x | 4.56x | 6.22x | 7.17x | 8.47x | 6.08x | 12.61x | 9.78x | 17.63x | 2.86x | 1.22x |
| Cash Conversion Cycle | 432.74 | 345.79 | 165.27 | 33.79 | -27.8 | 114.5 | 105.59 | 95.2 | 20.44 | 90.05 | 250.41 |
| Total Non-Current Liabilities | 28.75M | 30.1M | 30.19M | 26.19M | 7.68M | 24.73M | 30.72M | 24.56M | 24.93M | 16.62M | 12.43M |
| Long-Term Debt | 0 | 0 | 0 | 0 | 7.54M | 15.8M | 24.75M | 24.52M | 24.93M | 16.46M | 12.38M |
| Capital Lease Obligations | 117.25M | 30M | 30.04M | 24.85M | 7.54M | 8.8M | 5.89M | 0 | 0 | 0 | 0 |
| Deferred Tax Liabilities | 11.18M | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Other Non-Current Liabilities | 135K | 104K | 148K | 1.35M | -7.39M | 134K | 85K | 40K | 0 | 157K | 53K |
| Total Liabilities | 126.08M | 126.16M | 118.69M | 104.3M | 68.87M | 66.04M | 51.44M | 41.42M | 36.08M | 23.61M | 19.72M |
| Total Debt | 28.61M | 32.16M | 31.79M | 24.85M | 16.41M | 34.09M | 30.63M | 25.35M | 24.93M | 16.46M | 15.69M |
| Net Debt | -162.19M | -72.66M | -118.36M | -160.69M | -425.18M | -180.37M | -159.89M | 2.49M | -72.36M | 7.5M | 9.01M |
| Debt / Equity | 0.03x | 0.04x | 0.05x | 0.04x | 0.03x | 0.15x | 0.13x | 0.18x | 0.15x | 11.09x | - |
| Debt / EBITDA | 0.83x | 0.50x | 0.75x | - | - | - | - | - | - | - | - |
| Net Debt / EBITDA | -4.71x | -1.12x | -2.78x | - | - | - | - | - | - | - | - |
| Interest Coverage | 223.89x | 480.54x | 2657.95x | - | -25.40x | -18.72x | -25.97x | -14.67x | -5.61x | -8.99x | -13.22x |
| Total Equity | 826.95M | 781.16M | 689.7M | 572.51M | 496.01M | 229.05M | 229.75M | 139.84M | 164M | 1.48M | -6.61M |
| Equity Growth % | 83.78% | 13.26% | 20.47% | 15.42% | 116.55% | -0.3% | 64.3% | -14.73% | 10951.15% | 122.46% | - |
| Book Value per Share | 28.59 | 26.25 | 22.58 | 19.54 | 17.67 | 8.40 | 8.81 | 5.87 | 11.25 | 0.11 | -0.53 |
| Total Shareholders' Equity | 826.95M | 781.16M | 689.7M | 572.51M | 496.01M | 229.05M | 229.75M | 139.84M | 164M | 1.48M | -6.61M |
| Common Stock | 29K | 29K | 30K | 30K | 29K | 27K | 27K | 24K | 23K | 13K | 1K |
| Retained Earnings | -181.87M | -146.49M | -291.91M | -345.42M | -324.27M | -279.39M | -237.35M | -180.16M | -146.91M | -125.08M | -107.57M |
| Treasury Stock | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Accumulated OCI | -1.45M | 464K | 536K | 800K | -86K | -55K | 29K | 102K | -52K | 0 | 0 |
| Minority Interest | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Quick answers to the most common questions about buying INSP stock.
As of 2025, Inspire Medical Systems, Inc. (INSP) had total assets of $907.3M including $583.7M in current assets.
Inspire Medical Systems, Inc. (INSP) carries total debt of $32.2M, offset by $308.3M in cash and short-term investments. Comparing total debt to cash helps evaluate the company's debt burden and net leverage.
Inspire Medical Systems, Inc. (INSP) has total shareholders' equity (book value) of $781.2M ($26.25 book value per share). Book value represents the net worth of the company belonging to common stock holders.
Inspire Medical Systems, Inc. (INSP) reported a current ratio of 6.08x. A current ratio above 1.0x indicates that the company has more current assets than current liabilities, suggesting sufficient short-term liquidity.
Key Metrics
Top Statement Risk
Operating Losses Eroding Equity
Metrics are mathematically derived from official filings.
Balance Sheet Strengthening Despite Losses
As reported in financial statements, INSP's total assets rose from $728.4M in 2024Q2 to $953.0M in 2026Q3, while total liabilities stayed near $126.1M, suggesting the balance sheet has expanded on a largely unlevered base.
The growth in assets appears driven largely by cash accumulation and a rising PPE base, though cash balances have fluctuated materially quarter to quarter. Equity has grown from $638.1M to $826.9M over the period, which may indicate capital retention or equity issuance, but the reported figures alone do not confirm the source. Investors should monitor whether this expansion is sustained once operating losses are reflected in the cash line.
Minimal Leverage Limits Refinancing Risk
Based on INSP's reported figures, total debt of $28.6M against equity of $826.9M yields a debt-to-equity ratio of roughly 0.03, indicating leverage is negligible relative to the capital base.
Debt has remained in a narrow $24.5M to $33.5M band for most of the period, with a temporary spike to $62.2M in 2025Q4 that reverted in the following quarter. This pattern suggests short-term borrowing rather than structural leverage, though the composition of that spike is not disclosed in the supplied data. Low leverage meaningfully reduces near-term refinancing exposure, but it does not address the underlying question of whether operating losses can be sustained.
Liquidity Buffer Sustained by Equity Base
As reported in financial statements, INSP's current ratio of 6.45 in 2026Q3 and cash of $190.8M provide a substantial buffer relative to total liabilities of $126.1M.
Cash rebounded from $98.9M in 2026Q1 to $190.8M in 2026Q3, which appears to reflect a combination of working capital timing and possible financing inflows that are not fully disclosed here. The current ratio has compressed from 9.25 in 2024Q2 to the mid-single digits, suggesting that current liabilities have grown faster than current assets in recent quarters. Investors should watch whether the liquidity cushion holds as operating losses continue.
Accumulated Deficit Narrowing Gradually
Based on INSP's reported figures, retained earnings improved from a deficit of $345.6M in 2024Q2 to $181.9M in 2026Q3, a shift of roughly $164M that reflects cumulative profitability in some periods.
The improvement in retained earnings is substantially larger than the quarterly net income in several periods, which may indicate non-operating or tax-related contributions rather than core operating profit. Equity growth therefore appears to rely partly on items that may not recur. The persistent accumulated deficit, despite recent gains, warrants monitoring for signs of dilution or sustained losses eroding the equity base.
Goodwill-Free Balance Sheet Masks Lease Exposure
According to reported balance sheet data, INSP carries no goodwill, which limits impairment risk, but off-balance-sheet operating lease obligations are not captured in the supplied figures and could alter the leverage picture.
The absence of goodwill removes one common source of write-down risk, making the reported asset base comparatively clean. However, lease commitments for facilities and equipment are not visible in the supplied debt line, so headline leverage may understate true fixed obligations. Analysts should review the lease footnotes before concluding that the balance sheet is as unencumbered as the reported ratios suggest.