Sionna Therapeutics, Inc. (SION) Cash Flow Statement
Where SION’s cash came from and went, 2025
December 31, 2025 · U.S. dollars- Cash from operations
- −$66.3M
- Capital expenditures
- $377,000
- Free cash flow
- −$66.7M
- Returned to shareholders
- —
- Change in cash
- $20.7M cash at year-end $59.4M
Drawn to scale: where the cash came from and how it was used. Hover for values.
SION operating cash flow, capex and free cash flow
SION cash flow trends, 2022–2025
| Metric | Trend | Then | Latest | Change |
|---|---|---|---|---|
| Operating cash flow | −$36.1M2022 | −$66.3M2025 | — | |
| Capital expenditures | $1.9M2022 | $377,0002025 | −41.4%/yr | |
| Free cash flow | −$37.9M2022 | −$66.7M2025 | — | |
| Stock-based compensation | $1.7M2022 | $12.1M2025 | +92.7%/yr |
Change is the average annual growth (CAGR) or the difference between the first and latest year.
SION cash flow by activity
SION net income vs operating cash flow
Operating cash flow above net income usually means earnings are backed by cash (depreciation and stock-based pay are non-cash expenses).
SION cash flow statement
| 2025 | 2024 | 2023 | 2022 | |
|---|---|---|---|---|
| Operating activities | ||||
| Net income | −$75.3M | −$61.7M | −$47.3M | −$40.2M |
| Depreciation & amortization | $647,000 | $668,000 | $583,000 | $122,000 |
| Stock-based compensation | $12.1M | $3.7M | $2.3M | $1.7M |
| Change in working capital | −$2.7M | −$3.1M | −$783,000 | $2.8M |
| Other non-cash items | −$1.1M | $7.6M | $1.5M | −$400,000 |
| Cash from operating activities | −$66.3M | −$52.8M | −$43.7M | −$36.1M |
| Investing activities | ||||
| Capital expenditures | −$377,000 | −$27,000 | −$1.1M | −$1.9M |
| Investments (net) | −$118.4M | −$126.9M | $27.4M | −$29.3M |
| Acquisitions & other investing | $0 | $27,000 | $1.1M | $1.9M |
| Cash from investing activities | −$118.7M | −$126.9M | $27.4M | −$29.3M |
| Financing activities | ||||
| Shares issued | $202.1M | $181.3M | $0 | $110.8M |
| Other financing | $3.6M | −$2.4M | $31,000 | $64,000 |
| Cash from financing activities | $205.7M | $179.0M | $31,000 | $110.9M |
| Summary | ||||
| Net change in cash | $20.7M | −$733,000 | −$16.3M | $45.5M |
| Cash at end of period | $59.4M | $38.8M | $39.5M | $55.8M |
| Free cash flow | −$66.7M | −$52.8M | −$44.8M | −$37.9M |
| Jun '26 | Mar '26 | Dec '25 | Sep '25 | Jun '25 | Mar '25 | Dec '24 | Sep '24 | Jun '24 | Mar '24 | Dec '23 | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Operating activities | |||||||||||
| Net income | −$56.7M | −$26.8M | −$20.4M | −$20.3M | −$18.1M | −$16.5M | −$15.8M | −$25.4M | −$8.6M | −$11.8M | −$11.9M |
| Depreciation & amortization | $155,000 | $154,000 | $503,000 | $100,000 | $147,000 | $159,000 | $167,000 | $169,000 | $166,000 | $166,000 | $161,000 |
| Stock-based compensation | $13.4M | $6.6M | $3.8M | $3.3M | $2.8M | $2.1M | $1.1M | $1.0M | $971,000 | $647,000 | $572,000 |
| Change in working capital | −$1.4M | −$2.1M | −$302,000 | $1.9M | −$2.4M | −$1.9M | $3.1M | −$1.6M | −$2.1M | −$2.5M | $3.1M |
| Other non-cash items | $455,000 | $289,000 | −$213,000 | −$257,000 | −$676,000 | −$206,000 | −$300,000 | $8.1M | −$613,000 | $381,000 | $572,000 |
| Cash from operating activities | −$44.1M | −$21.8M | −$16.6M | −$15.2M | −$18.2M | −$16.3M | −$11.8M | −$17.7M | −$10.1M | −$13.2M | −$7.5M |
| Investing activities | |||||||||||
| Capital expenditures | $0 | $0 | −$204,000 | −$87,000 | $0 | −$86,000 | −$27,000 | $0 | $0 | $0 | −$122,000 |
| Investments (net) | $21.5M | $24.8M | $22.8M | $23.1M | −$23.2M | −$141.2M | $15.2M | $10.4M | −$28.6M | −$123.9M | $7.1M |
| Acquisitions & other investing | $24.8M | $0 | $0 | $87,000 | $0 | $86,000 | $27,000 | $0 | $0 | $0 | $122,000 |
| Cash from investing activities | $46.3M | $24.8M | $22.6M | $23.1M | −$23.2M | −$141.2M | $15.2M | $10.4M | −$28.6M | −$123.9M | $7.1M |
| Financing activities | |||||||||||
| Shares issued | $0 | $0 | $0 | $0 | $0 | $202.4M | $0 | $0 | $0 | $181.3M | $0 |
| Other financing | $2.6M | $1.9M | $1.7M | $2.0M | −$312,000 | $0 | −$1.4M | −$996,000 | $38,000 | $5,000 | $0 |
| Cash from financing activities | $2.6M | $1.9M | $1.7M | $2.0M | −$312,000 | $202.4M | −$1.4M | −$996,000 | $38,000 | $181.3M | $0 |
| Summary | |||||||||||
| Net change in cash | $4.9M | $4.9M | $7.6M | $9.8M | −$41.7M | $44.9M | $2.0M | −$8.3M | −$38.7M | $44.2M | −$324,000 |
| Cash at end of period | $64.3M | $63.3M | $59.4M | $50.8M | $41.9M | $83.7M | $38.8M | $36.7M | $45.0M | $83.7M | $39.5M |
| Free cash flow | −$44.1M | −$21.8M | −$16.8M | −$15.3M | −$18.2M | −$16.4M | −$11.8M | −$17.7M | −$10.1M | −$13.2M | −$7.6M |
Negative numbers are cash paid out. Quarterly columns are labeled by the month the quarter ended. Figures in U.S. dollars as reported; data from EODHD.
SION cash generation
In fiscal 2025 (ended December 31, 2025), Sionna Therapeutics generated -$66.3 million of cash from operations and spent $0.4 million on capital expenditures, leaving free cash flow of -$66.7 million. Cash and equivalents rose by $20.7 million over the year.
Related: SION income statement, SION balance sheet. See the SION stock overview for the latest quote and news.
SION cash flow FAQ
What is Sionna Therapeutics's free cash flow?
Sionna Therapeutics's free cash flow was -$66.7 million in fiscal 2025: -$66.3 million of operating cash flow minus $0.4 million of capital expenditures It was -$52.8 million a year earlier..
How much cash does Sionna Therapeutics generate from operations?
Sionna Therapeutics generated -$66.3 million of cash from operating activities in fiscal 2025.
How much does Sionna Therapeutics spend on capital expenditures?
Sionna Therapeutics spent $0.4 million on capital expenditures in fiscal 2025, compared with $0.0 million the year before.