Serina Therapeutics Inc (SER) Key Metrics
SER valuation today
Trailing 12 months · as of October 18, 2026- Market cap
- $43.7M
- Enterprise value
- $35.8M
- P/E (TTM)
- —
- Forward P/E
- —
- PEG ratio
- —
- Price / sales
- 323.0 10-yr median 149.9
- Price / book
- 3.0
- EV / EBITDA
- 37.4
- Dividend yield
- —
- Beta
- 0.16
SER key metrics, 2016–2025
Fiscal year ended December 31, 2025 · U.S. dollarsSER valuation Price multiples at each fiscal year-end price.
Price / sales−77.2%
149.9
2025 · hover or tap a bar for each year
20162025
Free cash flow yield−45.6 pts
−92.1%
2025 · hover or tap a bar for each year
20162025
SER returns How much profit the business earns on the capital it uses.
Return on assets−138.5 pts
−280.5%
2025 · hover or tap a bar for each year
20162025
Asset turnover+166.4%
0.02
2025 · hover or tap a bar for each year
20162025
SER per-share figures Results divided by the shares outstanding at year-end.
Revenue per share+67.6%
$0.01
2025 · hover or tap a bar for each year
20162025
Earnings per share
−$1.88
2025 · hover or tap a bar for each year
20162025
Free cash flow per share
−$1.76
2025 · hover or tap a bar for each year
20162025
Book value per share
−$0.00
2025 · hover or tap a bar for each year
20162025
Shares outstanding+38.5%
10.2M
2025 · hover or tap a bar for each year
20162025
SER financial health Debt, liquidity and how easily interest is covered.
Net debt+$544,000
−$2.9M
2025 · hover or tap a bar for each year
20162025
Current ratio−28.9%
1.71
2025 · hover or tap a bar for each year
20162025
Interest coverage
-112.8
2025 · hover or tap a bar for each year
20162025
Debt / assets−29.3%
0.03
2025 · hover or tap a bar for each year
20162025
SER efficiency & capital use Working capital cycle and where the cash goes.
Days payables outstanding+4,498 days
5,743 days
2025 · hover or tap a bar for each year
20162025
Capex / revenue+6.1 pts
45.4%
2025 · hover or tap a bar for each year
20162025
SER valuation history
Fiscal year-endToday10-year median
SER returns on capital
ROEROICROA
Net income (ROE, ROA) or after-tax operating income (ROIC) divided by the average of the opening and closing balance.
SER debt vs cash
Total debtCash & short-term investments
Debt includes short- and long-term borrowings and, where reported, lease liabilities.
SER price vs earnings per share
Share price at year-endEPS (right axis)
SER key metrics
2016–2025| 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | |
|---|---|---|---|---|---|---|---|---|---|---|
| Valuation | ||||||||||
| Market capitalization | $19.5M | $36.9M | $117.5M | — | — | — | — | — | — | — |
| Enterprise value | $16.6M | $33.5M | $113.3M | — | — | — | — | — | — | — |
| P/E ratio | — | — | 22.3 | — | — | — | — | — | — | — |
| Price / sales | 149.9 | 658.4 | 37.3 | — | — | — | — | — | — | — |
| Price / book | — | 57.5 | — | — | — | — | — | — | — | — |
| EV / sales | 127.9 | 597.6 | 35.9 | — | — | — | — | — | — | — |
| EV / EBITDA | — | — | 19.2 | — | — | — | — | — | — | — |
| Earnings yield | −98.4% | −30.2% | 4.5% | — | — | — | — | — | — | — |
| Free cash flow yield | −92.1% | −46.5% | −2.5% | — | — | — | — | — | — | — |
| Shareholder yield (dividends + buybacks) | 0.0% | 0.0% | — | — | — | — | — | — | — | — |
| Share price at fiscal year-end | $1.91 | $5.01 | $13.96 | $20.02 | $39.53 | $55.12 | $66.01 | $108.44 | — | — |
| Per share | ||||||||||
| Revenue per share | $0.01 | $0.01 | $0.37 | — | — | — | — | — | — | — |
| Earnings per share | −$1.88 | −$1.51 | $0.63 | — | — | — | — | — | — | — |
| Operating cash flow per share | −$1.76 | −$2.33 | −$0.29 | — | — | — | — | — | — | — |
| Free cash flow per share | −$1.76 | −$2.33 | −$0.35 | — | — | — | — | — | — | — |
| Cash per share | $0.30 | $0.50 | $0.91 | — | — | — | — | — | — | — |
| Book value per share | −$0.00 | $0.09 | −$3.84 | — | — | — | — | — | — | — |
| Tangible book value per share | −$0.00 | $0.09 | −$3.91 | — | — | — | — | — | — | — |
| Capex per share | $0.01 | $0.00 | $0.06 | — | — | — | — | — | — | — |
| Debt per share | $0.02 | $0.04 | $0.41 | — | — | — | — | — | — | — |
| Shares outstanding | 10.2M | 7.4M | 8.4M | — | — | — | — | — | — | — |
| Change in shares outstanding | +38.5% | −12.5% | — | — | — | — | — | — | — | — |
| Returns & profitability | ||||||||||
| Return on equity (ROE) | — | — | — | — | — | — | −251.5% | −101.9% | — | — |
| Return on invested capital (ROIC) | — | — | — | −340.7% | −179.1% | −664.4% | −774.5% | — | — | — |
| Return on assets (ROA) | −280.5% | −142.0% | 86.3% | −83.9% | −35.7% | −191.2% | −134.2% | −73.9% | −102.4% | −480.7% |
| Return on tangible assets | −276.0% | −165.7% | 63.0% | −107.2% | −55.4% | −465.7% | −229.7% | −70.3% | −68.3% | −480.7% |
| Free cash flow margin | — | — | −94.5% | −417.1% | −68.1% | — | −625.1% | −708.3% | −447.7% | −507.2% |
| Income quality (OCF / net income) | — | — | −0.47 | — | — | — | — | — | — | — |
| Financial health | ||||||||||
| Total debt | $196,000 | $268,000 | $3.4M | $18.1M | $13.2M | $6.3M | $2.0M | — | — | — |
| Cash & short-term investments | $3.1M | $3.7M | $7.6M | $645,000 | $584,000 | $527,000 | $2.4M | $6.7M | $7.4M | $259,000 |
| Net debt | −$2.9M | −$3.4M | −$4.2M | $17.5M | $12.6M | $5.8M | −$396,000 | −$6.7M | −$7.4M | −$259,000 |
| Debt / equity | — | 0.42 | — | — | — | — | 0.88 | — | — | — |
| Debt / assets | 0.03 | 0.04 | 0.38 | 5.59 | 4.19 | 1.60 | 0.26 | — | — | — |
| Net debt / EBITDA | — | — | −0.71 | — | — | — | — | — | — | — |
| Current ratio | 1.71 | 2.40 | 5.39 | 0.24 | 0.25 | 0.43 | 1.23 | 3.22 | 5.79 | 0.03 |
| Quick ratio | 1.71 | 2.40 | 5.39 | 0.42 | 0.43 | 0.43 | 1.23 | 3.22 | 5.79 | 0.03 |
| Interest coverage | -112.8 | -32.4 | -5.6 | -143.0 | -527.3 | -25.8 | — | — | -701.4 | -509.6 |
| Working capital | $2.5M | $3.3M | $6.2M | −$7.6M | −$6.7M | −$3.1M | $757,000 | $5.4M | $6.3M | −$24.9M |
| Invested capital | −$2.9M | −$2.8M | −$36.5M | $267,000 | $786,000 | $653,000 | $1.8M | $740,000 | −$95,000 | −$23.7M |
| Tangible asset value | −$37,000 | $508,000 | −$32.9M | −$18.1M | −$12.7M | −$7.0M | $466,000 | $8.2M | $8.3M | −$22.4M |
| Net current asset value | −$908,000 | −$540,000 | −$33.6M | −$18.1M | −$12.8M | −$7.0M | −$771,000 | $5.4M | $6.3M | −$24.9M |
| Graham net-net per share | −$0.39 | −$0.35 | −$3.99 | — | — | — | — | — | — | — |
| Capital allocation | ||||||||||
| Share buybacks (net) | $0 | $0 | — | $0 | — | — | — | — | — | — |
| Capex / revenue | 45.4% | 39.3% | 16.0% | 1.9% | 3.1% | 37.0% | 37.1% | 135.6% | 0.1% | 1.4% |
| Capex / depreciation | 0.81 | 0.11 | 5.60 | 0.16 | 3.25 | 0.02 | 0.67 | 3.54 | 0.00 | 0.03 |
| Stock-based compensation / revenue | 2,917.7% | 4,633.9% | 0.8% | 1.4% | 2.4% | — | — | — | — | — |
| R&D / revenue | 10,119.2% | 13,357.1% | 75.7% | 314.6% | 109.6% | 6,633.3% | 309.4% | 383.5% | 375.1% | 472.5% |
| SG&A / revenue | 8,459.2% | 17,185.7% | 123.5% | 257.8% | 37.5% | — | — | — | — | — |
| Efficiency | ||||||||||
| Days sales outstanding | — | — | 3.5 | 10.6 | 18.5 | 2,328.6 | 52.2 | 31.1 | 53.9 | 67.5 |
| Days of inventory on hand | — | — | — | -4,277.8 | -154.4 | — | — | — | — | — |
| Days payables outstanding | 5,743.4 | 1,245.5 | 2,327.9 | 957.8 | 45.8 | 168.3 | 104.2 | 48.8 | 89.5 | 104.6 |
| Cash conversion cycle (days) | — | — | -2,324.4 | -5,225.0 | -181.8 | 2,160.3 | -52.0 | -17.7 | -35.6 | -37.1 |
| Receivables turnover | — | — | 103.38 | 34.48 | 19.74 | 0.16 | 7.00 | 11.73 | 6.77 | 5.41 |
| Payables turnover | 0.06 | 0.29 | 0.16 | 0.38 | 7.96 | 2.17 | 3.50 | 7.48 | 4.08 | 3.49 |
| Asset turnover | 0.02 | 0.01 | 0.52 | 0.16 | 0.98 | 0.01 | 0.19 | 0.14 | 0.22 | 0.52 |
| Average receivables | — | — | $30,500 | $14,500 | $175,500 | $344,500 | $247,000 | $119,000 | $207,500 | $308,000 |
| Average payables | $1.3M | $662,000 | $574,000 | $380,500 | $477,000 | $590,500 | $285,000 | $112,500 | $168,000 | $261,000 |
| Average inventory | — | — | — | −$1.7M | −$1.6M | — | — | — | — | — |
| Intangibles / total assets | 0.0% | 0.0% | 6.8% | 22.8% | 27.6% | 40.6% | 28.9% | 0.0% | 0.0% | 0.0% |
Computed from SER's annual financial statements (latest annual report filed March 25, 2026) and the closing share price on each fiscal year-end, adjusted for stock splits. Figures in U.S. dollars; data from EODHD. Averages use the opening and closing balance of each year.
SER valuation and financial ratios
It ended the year with $0.2 million of debt and $3.1 million in cash and short-term investments, a net cash position of $2.9 million.
See the SER income statement, the SER chart for price history, or the SER stock overview for the latest quote and news.
SER key metrics FAQ
How much debt does Serina Therapeutics have?
Serina Therapeutics had total debt of $0.2 million at the end of fiscal 2025 and more cash than debt.
What is Serina Therapeutics's free cash flow yield?
Serina Therapeutics generated -$18.0 million of free cash flow in fiscal 2025, a free cash flow yield of −92.1% on its market value at year-end ($19.5 million).
What is Serina Therapeutics's current ratio?
Serina Therapeutics's current ratio was 1.71 at the end of fiscal 2025: current assets were 1.71 times current liabilities.