Synthetic Biologics Inc (SYN)
NYSE
Synthetic Biologics Inc Stock Price History
Synthetic Biologics Inc
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Historical daily closing price for Synthetic Biologics Inc since 2006, adjusted for splits and dividends. The latest closing stock price for Synthetic Biologics Inc as of June 3, 2026 is 0.29.
- The all-time high Synthetic Biologics Inc stock closing price was 197137.50 on January 9, 2007.
- The Synthetic Biologics Inc 52-week high stock price is 0.84, which is 191.7% above the current share price.
- The Synthetic Biologics Inc 52-week low stock price is 0.17, which is 39.2% below the current share price.
- The average Synthetic Biologics Inc stock price for the last 52 weeks is 0.32.
Annual Close Price
YEAR-END CLOSE · USD
ANNUAL % CHANGE · %
| Year | Average | Year Open | Year High | Year Low | Year Close | Annual % Change |
|---|---|---|---|---|---|---|
| 2026 | 0.24 | 0.26 | 0.41 | 0.17 | 0.29 | +36.88% |
| 2025 | 0.72 | 1.65 | 1.91 | 0.18 | 0.21 | -87.98% |
| 2024 | 6.63 | 11.03 | 15.43 | 1.14 | 1.75 | -83.72% |
| 2023 | 16.44 | 13.45 | 28.25 | 9.76 | 10.75 | -5.43% |
| 2022 | 45.32 | 74.70 | 107.50 | 10.00 | 11.37 | -83.29% |
| 2021 | 139.21 | 125.03 | 292.50 | 68.05 | 68.05 | -28.93% |
| 2020 | 107.54 | 125.47 | 177.60 | 67.55 | 95.75 | -24.44% |
| 2019 | 133.76 | 147.68 | 202.50 | 97.17 | 126.72 | -9.48% |
| 2018 | 1846.66 | 4592.88 | 5030.38 | 130.27 | 140.00 | -96.85% |
| 2017 | 5993.18 | 7595.00 | 8837.50 | 3710.88 | 4445.00 | -33.39% |
| 2016 | 14787.03 | 19862.50 | 23887.50 | 6623.75 | 6672.75 | -66.70% |
Synthetic Biologics Inc Stock Price History — FAQ
Synthetic Biologics Inc (SYN) stock price history — annual and quarterly figures with year-over-year growth and charts.
Where can I see SYN's stock price history history?
The chart and table above show Synthetic Biologics Inc's stock price history by year and by quarter, including the growth rate.