MBX MBX Biosciences, Inc. - Common Stock
$31.23
Price · May 20, 2026
Fundamentals as of May 7, 2026
52W Range
$9–$46
60% of range
Analyst Rating
BUY
15 analysts
Price Target
$69
+121% upside
P/E (TTM)
-13.3
ROE
-29.6%
Net Profit Margin
—
MBX Stock Snapshot Price, market cap, P/E, EPS, ROE, debt/equity, 52-week range
Price
$31.23
Market Cap
$1.42B
P/E (TTM)
-13.3
EPS (TTM)
$-2.38
Revenue (TTM)
—
Div Yield
—
ROE
-29.6%
Debt/Equity
—
52W Range
$9 – $46
MBX Stock Price Chart Daily OHLCV with technical indicators — pan, zoom, and customize your view
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10-Year Performance Revenue, net income, margins and EPS trends
Revenue & Net Income
—
EPS
$-2.38
2023-12-31
→
2025-12-31
Free Cash Flow
$-82M
2024-12-31
→
2025-12-31
Margins
—
Valuation P/E, P/S, P/B, EV/EBITDA ratios — is the stock expensive or cheap?
Metric
5Y trend
MBX
Peer Median
P/E (TTM)
-13.3
22.4
P/B
3.8
4.6
Price / FCF
-17.3
—
Profitability Gross, operating and net margins; ROE, ROA, ROIC
Metric
5Y trend
MBX
Peer Median
ROA
-26.6%
-7.1%
ROE
-29.6%
-18.6%
ROIC
-26.6%
—
Financial Health Debt, liquidity, solvency — balance sheet strength
Metric
5Y trend
MBX
Peer Median
Current Ratio
24.6
3.9
Quick Ratio
24.1
—
Growth Revenue, EPS and net income growth: YoY, 3Y CAGR, 5Y CAGR
Metric
5Y trend
MBX
Peer Median
Capital Efficiency Asset turnover, inventory turnover, receivables turnover
Metric
5Y trend
MBX
Peer Median
MBX Analyst Consensus Bullish and bearish analyst opinions, 12-month price target, upside
BUY
15 analysts
- Strong Buy 5 33.3%
- Buy 8 53.3%
- Hold 1 6.7%
- Sell 1 6.7%
- Strong Sell 0 0.0%
12-Month Price Target
11 analysts · 2026-05-19
Median
$70.00
Now
$31.23
Low
$20.00
High
$91.00
Median target
$70.00
+124.2%
Mean target
$69.09
+121.3%
Earnings History EPS actual vs estimate, surprise %, beat rate, next earnings date
Avg Surprise
0.11%
| Period | EPS Actual | EPS Est | Surprise |
|---|---|---|---|
| March 31, 2026 | $-0.51 | $-0.59 | 0.08% |
| Dec. 31, 2025 | $-0.49 | $-0.62 | 0.13% |
| Sept. 30, 2025 | $-0.63 | $-0.70 | 0.07% |
| June 30, 2025 | $-0.58 | $-0.77 | 0.19% |
| March 31, 2025 | $-0.71 | $-0.78 | 0.07% |
Peer Comparison Key metrics vs sector peers
| Ticker | Market Cap | P/E | Rev YoY | Net Margin | ROE | Gross Margin |
|---|---|---|---|---|---|---|
| MBX | $1.42B | -13.3 | — | — | -29.6% | — |
| OCUL | $2.62B | -8.5 | -18.5% | -511.9% | -55.4% | — |
| RAPP | $1.45B | -10.6 | — | — | -29.8% | — |
| INVA | — | 6.1 | 14.7% | — | — | — |
| NUVB | $3.03B | -14.9 | 699.0% | -325.3% | -60.3% | — |
| ATAI | $223M | -1.4 | -1.9% | -48464.0% | -83.1% | — |
| AMLX | $1.33B | -7.9 | -77.1% | — | -61.2% | — |
| MAZE | $2.04B | -13.6 | — | — | -598.9% | — |
| PAHC | — | 21.5 | 27.4% | 3.7% | 17.8% | 30.9% |
| SEPN | $1.25B | -25.3 | 4174.5% | -106.4% | -12.9% | — |
Full Fundamentals All metrics by year — income statement, balance sheet, cash flow
Income Statement 12
| Metric | Trend | 2025 | 2024 | 2023 |
|---|---|---|---|---|
| R&D Expense | $79M | $57M | $29M | |
| SG&A Expense | $19M | $11M | $7M | |
| Operating Expenses | $98M | $68M | $35M | |
| Operating Income | $-98M | $-68M | $-35M | |
| Pretax Income | $-87M | $-62M | · | |
| Income Tax | $0 | $0 | $0 | |
| Net Income | $-87M | $-62M | $-33M | |
| EPS (Basic) | $-2.38 | $-5.82 | $-31.96 | |
| EPS (Diluted) | $-2.38 | $-5.82 | $-31.96 | |
| Shares (Basic) | 36,506,092 | 10,642,954 | 1,018,757 | |
| Shares (Diluted) | 36,506,092 | 10,642,954 | 1,018,757 | |
| EBITDA | $-98M | $-68M | · |
Balance Sheet 21
| Metric | Trend | 2025 | 2024 | 2023 |
|---|---|---|---|---|
| Cash & Equivalents | $75M | $49M | $31M | |
| Short-term Investments | $298M | $213M | $50M | |
| Prepaid Expense | $8M | $5M | $3M | |
| Other Current Assets | $861.0K | $803.0K | $133.0K | |
| Current Assets | $382M | $267M | $83M | |
| PP&E (Net) | $3M | $1M | $439.0K | |
| PP&E (Gross) | $3M | $2M | $617.0K | |
| Accum. Depreciation | $670.0K | $422.0K | $178.0K | |
| Other Non-current Assets | $383.0K | $50.0K | $50.0K | |
| Total Assets | $385M | $269M | $84M | |
| Accounts Payable | $3M | $5M | $1M | |
| Accrued Liabilities | $12M | $6M | $2M | |
| Current Liabilities | $15M | $11M | $4M | |
| Capital Leases | $424.0K | $0 | $171.0K | |
| Total Liabilities | $16M | $11M | $4M | |
| Common Stock | $6.0K | $5.0K | $1.0K | |
| Retained Earnings | $-224M | $-138M | $-76M | |
| AOCI | $286.0K | $55.0K | $60.0K | |
| Stockholders' Equity | $369M | $257M | $-72M | |
| Liabilities + Equity | $385M | $269M | $84M | |
| Shares Outstanding | 44,927,953 | 33,421,525 | 1,257,080 |
Cash Flow 9
| Metric | Trend | 2025 | 2024 | 2023 |
|---|---|---|---|---|
| Stock-based Comp | $9M | $5M | $2M | |
| Operating Cash Flow | $-80M | $-55M | $-32M | |
| CapEx | $2M | $874.0K | $129.0K | |
| Investing Cash Flow | $-84M | $-161M | $-31M | |
| Stock Issued | $602M | · | · | |
| Net Stock Activity | $602M | · | · | |
| Financing Cash Flow | $190M | $234M | $69M | |
| Net Change in Cash | $26M | $19M | $6M | |
| Free Cash Flow | $-82M | $-56M | · |
Profitability 3
| Metric | Trend | 2025 | 2024 | 2023 |
|---|---|---|---|---|
| ROA | -26.6% | -35.1% | · | |
| ROE | -29.6% | -23.4% | · | |
| ROIC | -26.6% | · | · |
Liquidity & Solvency 2
| Metric | Trend | 2025 | 2024 | 2023 |
|---|---|---|---|---|
| Current Ratio | 24.6 | 24.2 | · | |
| Quick Ratio | 24.1 | 23.7 | · |
Valuation (TTM) 8
| Metric | Trend | 2025 | 2024 | 2023 |
|---|---|---|---|---|
| Net Income TTM | $-87M | $-62M | · | |
| Market Cap | $1.42B | $616M | · | |
| P/E | -13.3 | -3.2 | · | |
| P/B | 3.8 | 2.4 | · | |
| P / Tangible Book | 3.8 | 2.4 | · | |
| P / Cash Flow | -17.7 | -11.3 | · | |
| P / FCF | -17.3 | -11.1 | · | |
| Earnings Yield | -7.5% | -31.6% | · |
Income Statement 10
| Metric | Trend | Q1 2026 | Q4 2025 | Q3 2025 | Q2 2025 | Q1 2025 | Q4 2024 | Q3 2024 | Q4 2023 |
|---|---|---|---|---|---|---|---|---|---|
| R&D Expense | $18M | $20M | $19M | $18M | $22M | $15M | $17M | $8M | |
| SG&A Expense | $9M | $6M | $5M | $4M | $4M | $3M | $3M | $2M | |
| Operating Expenses | $27M | $26M | $24M | $22M | $27M | $19M | $20M | $10M | |
| Operating Income | $-27M | $-26M | $-24M | $-22M | $-27M | $-19M | $-20M | $-10M | |
| Net Income | $-24M | $-22M | $-22M | $-19M | $-24M | $-16M | $-18M | $-9M | |
| EPS (Basic) | $-0.50 | $-0.46 | $-0.63 | $-0.58 | $-0.71 | $19.84 | $-2.78 | $-7.68 | |
| EPS (Diluted) | $-0.50 | $-0.46 | $-0.63 | $-0.58 | $-0.71 | $19.84 | $-2.78 | $-7.68 | |
| Shares (Basic) | 46,576,204 | -64,551,276 | 34,198,597 | 33,446,385 | 33,412,386 | 1,668,393 | 6,515,616 | 41,933 | |
| Shares (Diluted) | 46,576,204 | -64,551,276 | 34,198,597 | 33,446,385 | 33,412,386 | 1,668,393 | 6,515,616 | 41,933 | |
| EBITDA | $-27M | · | $-24M | $-22M | $-27M | · | $-20M | · |
Balance Sheet 21
| Metric | Trend | Q1 2026 | Q4 2025 | Q3 2025 | Q2 2025 | Q1 2025 | Q4 2024 | Q3 2024 | Q4 2023 |
|---|---|---|---|---|---|---|---|---|---|
| Cash & Equivalents | $45M | $75M | $223M | $40M | $30M | $49M | $133M | $31M | |
| Short-term Investments | $395M | $298M | $169M | $185M | $211M | $213M | $144M | $50M | |
| Prepaid Expense | $9M | $8M | $6M | $4M | $3M | $5M | $4M | $3M | |
| Other Current Assets | $814.0K | $861.0K | $882.0K | $472.0K | $626.0K | $803.0K | $838.0K | $133.0K | |
| Current Assets | $449M | $382M | $398M | $229M | $244M | $267M | $281M | $83M | |
| PP&E (Net) | $3M | $3M | $2M | $2M | $2M | $1M | $1M | $439.0K | |
| PP&E (Gross) | $4M | $3M | $3M | $2M | $2M | $2M | $1M | $617.0K | |
| Accum. Depreciation | $734.0K | $670.0K | $610.0K | $560.0K | $499.0K | $422.0K | $364.0K | $178.0K | |
| Other Non-current Assets | $579.0K | $383.0K | $50.0K | $50.0K | $50.0K | $50.0K | $50.0K | $50.0K | |
| Total Assets | $453M | $385M | $400M | $232M | $246M | $269M | $282M | $84M | |
| Accounts Payable | $7M | $3M | $4M | $6M | $4M | $5M | $5M | $1M | |
| Accrued Liabilities | $7M | $12M | $8M | $6M | $6M | $6M | $6M | $2M | |
| Current Liabilities | $15M | $15M | $12M | $12M | $10M | $11M | $11M | $4M | |
| Capital Leases | $377.0K | $424.0K | $469.0K | $512.0K | · | $0 | $44.0K | $171.0K | |
| Total Liabilities | $15M | $16M | $13M | $12M | $11M | $11M | $11M | $4M | |
| Common Stock | $6.0K | $6.0K | $6.0K | $5.0K | $5.0K | $5.0K | $5.0K | $1.0K | |
| Retained Earnings | $-248M | $-224M | $-202M | $-181M | $-161M | $-138M | $-122M | $-76M | |
| AOCI | $-606.0K | $286.0K | $154.0K | $11.0K | $53.0K | $55.0K | $106.0K | $60.0K | |
| Stockholders' Equity | $438M | $369M | $388M | $219M | $235M | $257M | $271M | $-72M | |
| Liabilities + Equity | $453M | $385M | $400M | $232M | $246M | $269M | $282M | $84M | |
| Shares Outstanding | 47,570,464 | 44,927,953 | 44,715,498 | 33,592,226 | 33,424,371 | 33,421,525 | 33,376,058 | 1,257,080 |
Cash Flow 9
| Metric | Trend | Q1 2026 | Q4 2025 | Q3 2025 | Q2 2025 | Q1 2025 | Q4 2024 | Q3 2024 | Q4 2023 |
|---|---|---|---|---|---|---|---|---|---|
| Stock-based Comp | $5M | $3M | $2M | $2M | $2M | $1M | $1M | $1M | |
| Operating Cash Flow | $-20M | $-18M | $-22M | $-17M | $-23M | $-16M | $-15M | $-11M | |
| CapEx | $437.0K | $793.0K | $399.0K | $707.0K | $30.0K | $92.0K | $57.0K | $55.0K | |
| Investing Cash Flow | $-97M | $-130M | $17M | $26M | $3M | $-67M | $-101M | $-29M | |
| Stock Issued | $689M | · | · | · | · | · | · | · | |
| Net Stock Activity | $689M | · | · | · | · | · | · | · | |
| Financing Cash Flow | $87M | $438.0K | $188M | $1M | $4.0K | $-132.0K | $236M | $19.0K | |
| Net Change in Cash | $-30M | $-148M | $183M | $10M | $-19M | $-84M | $120M | $-40M | |
| Free Cash Flow | $-21M | · | · | · | $-23M | · | · | · |
Profitability 2
| Metric | Trend | Q1 2026 | Q4 2025 | Q3 2025 | Q2 2025 | Q1 2025 | Q4 2024 | Q3 2024 | Q4 2023 |
|---|---|---|---|---|---|---|---|---|---|
| ROA | -6.7% | · | -6.3% | -16.8% | -19.4% | · | -12.8% | · | |
| ROE | -7.0% | · | -6.6% | -17.7% | -20.3% | · | -13.4% | · |
Liquidity & Solvency 2
| Metric | Trend | Q1 2026 | Q4 2025 | Q3 2025 | Q2 2025 | Q1 2025 | Q4 2024 | Q3 2024 | Q4 2023 |
|---|---|---|---|---|---|---|---|---|---|
| Current Ratio | 30.8 | · | 33.0 | 19.5 | 23.3 | · | 25.7 | · | |
| Quick Ratio | 30.2 | · | 32.5 | 19.1 | 23.0 | · | 25.4 | · |
Valuation (TTM) 8
| Metric | Trend | Q1 2026 | Q4 2025 | Q3 2025 | Q2 2025 | Q1 2025 | Q4 2024 | Q3 2024 | Q4 2023 |
|---|---|---|---|---|---|---|---|---|---|
| Net Income TTM | $-88M | · | $-83M | $-77M | $-70M | · | $-56M | · | |
| Market Cap | $1.42B | · | $783M | $383M | $247M | · | $867M | · | |
| P/E | -12.3 | · | -3.7 | -0.7 | -0.3 | · | -0.7 | · | |
| P/B | 3.2 | · | 2.0 | 1.7 | 1.0 | · | 3.2 | · | |
| P / Tangible Book | 3.2 | · | 2.0 | 1.7 | 1.0 | · | 3.2 | · | |
| P / Cash Flow | -70.3 | · | · | · | -10.9 | · | · | · | |
| P / FCF | -68.8 | · | · | · | -10.9 | · | · | · | |
| Earnings Yield | -8.1% | · | -26.9% | -146.3% | -357.3% | · | -134.9% | · |
Financial Statements Income statement, balance sheet, cash flow — annual, last 5 years
Income Statement
| 2025-12-31 | 2024-12-31 | 2023-12-31 | |
|---|---|---|---|
| Net Income | $-87M | $-62M | $-33M |
| Diluted EPS | $-2.38 | $-5.82 | $-31.96 |
Balance Sheet
| 2025-12-31 | 2024-12-31 | 2023-12-31 | |
|---|---|---|---|
| Current Ratio | 24.6 | 24.2 | — |
| Quick Ratio | 24.1 | 23.7 | — |
Cash Flow
| 2025-12-31 | 2024-12-31 | 2023-12-31 | |
|---|---|---|---|
| Free Cash Flow | $-82M | $-56M | — |
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