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Last Month
Last Quarter
Last Year
All Time
| Date | Analyst Firm | Action | Previous Grade | New Grade |
|---|---|---|---|---|
| 2025-11-17 | HC Wainwright & Co. | Downgrade | Buy | Neutral |
| 2025-10-28 | RBC Capital | Maintain | Sector Perform | Sector Perform |
| 2025-09-23 | HC Wainwright & Co. | Maintain | Buy | Buy |
| 2025-08-13 | Chardan Capital | Maintain | Buy | Buy |
| 2025-06-26 | Mizuho | Maintain | Outperform | Outperform |
| 2025-05-15 | Chardan Capital | Maintain | Buy | Buy |
| 2025-05-15 | HC Wainwright & Co. | Maintain | Buy | Buy |
| 2025-05-15 | RBC Capital | Maintain | Sector Perform | Sector Perform |
| 2025-04-17 | Chardan Capital | Maintain | Buy | Buy |
| 2025-04-16 | RBC Capital | Maintain | Sector Perform | Sector Perform |
| 2025-04-16 | HC Wainwright & Co. | Maintain | Buy | Buy |
| 2024-11-19 | HC Wainwright & Co. | Maintain | Buy | Buy |
| 2024-11-05 | RBC Capital | Maintain | Sector Perform | Sector Perform |
| 2024-08-14 | Truist Securities | Maintain | Buy | Buy |
| 2024-08-13 | HC Wainwright & Co. | Maintain | Buy | Buy |
| 2024-08-13 | HC Wainwright& Co. | Maintain | Buy | Buy |
| 2024-08-13 | RBC Capital | Maintain | Sector Perform | Sector Perform |
| 2024-07-18 | Chardan Capital | Maintain | Buy | Buy |
| 2024-05-15 | Truist Securities | Maintain | Buy | Buy |
| 2024-05-10 | HC Wainwright & Co. | Maintain | Buy | Buy |
| 2024-04-29 | Mizuho | Maintain | Buy | Buy |
| 2024-03-19 | RBC Capital | Maintain | Sector Perform | Sector Perform |
| 2024-03-19 | Chardan Capital | Maintain | Buy | Buy |
| 2024-02-06 | Mizuho | Maintain | Buy | Buy |
| 2023-09-05 | Truist Securities | Maintain | Buy | Buy |
| 2023-08-11 | Chardan Capital | Upgrade | Neutral | Buy |
| 2023-03-07 | Ladenburg Thalmann | Maintain | Buy | Buy |
| 2022-11-11 | RBC Capital | Maintain | Sector Perform | Sector Perform |
| 2022-11-11 | Chardan Capital | Maintain | Neutral | Neutral |
| 2022-08-12 | Chardan Capital | Maintain | Neutral | Neutral |
| 2022-07-07 | Truist Securities | Upgrade | Hold | Buy |
| 2021-07-23 | Chardan Capital | Maintain | Neutral | Neutral |
| 2021-07-23 | SVB Leerink | Maintain | Market Perform | Market Perform |
| 2021-07-23 | Cantor Fitzgerald | Downgrade | Overweight | Neutral |
| 2021-05-03 | SVB Leerink | Downgrade | Outperform | Market Perform |
| 2021-04-29 | RBC Capital | Downgrade | Outperform | Sector Perform |
| 2021-04-29 | Truist Securities | Downgrade | Buy | Hold |
| 2021-04-29 | SVB Leerink | Maintain | Outperform | Outperform |
| 2021-04-29 | Chardan Capital | Downgrade | Buy | Neutral |
| 2020-11-12 | Raymond James | Upgrade | Underperform | Market Perform |
| 2020-08-11 | SVB Leerink | Maintain | Outperform | Outperform |
| 2020-05-13 | RBC Capital | Maintain | Outperform | Outperform |
| 2020-05-05 | SVB Leerink | Maintain | Outperform | Outperform |
| 2020-05-05 | SunTrust Robinson Humphrey | Upgrade | Hold | Buy |
| 2020-04-28 | Goldman Sachs | Maintain | Buy | Buy |
| 2020-03-16 | SVB Leerink | Maintain | Outperform | Outperform |
| 2020-02-10 | Chardan Capital | Upgrade | Neutral | Buy |
| 2020-02-10 | Cantor Fitzgerald | Upgrade | Neutral | Overweight |
| 2020-01-13 | PiperJaffray | Maintain | Overweight | Overweight |
| 2019-09-13 | SunTrust Robinson Humphrey | Maintain | Hold | Hold |
| 2018-11-05 | Cantor Fitzgerald | Downgrade | Overweight | Neutral |
| 2018-11-02 | Raymond James | Downgrade | Outperform | Market Perform |
| 2018-11-02 | SunTrust Robinson Humphrey | Downgrade | Buy | Hold |
| 2018-09-21 | Cantor Fitzgerald | Maintain | Overweight | Overweight |
| 2018-08-30 | SunTrust Robinson Humphrey | Maintain | Buy | Buy |
| 2017-10-12 | Raymond James | Maintain | Outperform | Outperform |
| 2016-06-08 | Chardan Capital | Downgrade | Buy | Neutral |
| 2016-03-01 | Chardan Capital | Maintain | Buy | Buy |
| 2015-06-23 | Chardan Capital | Upgrade | Sell | Neutral |
| 2015-06-16 | Chardan Capital | Downgrade | Neutral | Sell |
| 2015-06-16 | SunTrust Robinson Humphrey | Downgrade | Buy | Neutral |
| 2015-06-16 | William Blair | Downgrade | Outperform | Market Perform |
| 2015-03-26 | Jefferies | Maintain | Buy | Buy |
| 2015-03-10 | SunTrust Robinson Humphrey | Maintain | Buy | Buy |
| 2015-02-19 | Chardan Capital | Maintain | Neutral | Neutral |
| 2015-02-13 | Jefferies | Maintain | Buy | Buy |
| 2014-08-25 | PiperJaffray | Maintain | Overweight | Overweight |
| 2014-08-25 | Jefferies | Maintain | Buy | Buy |
| 2014-08-25 | Cowen & Co. | Maintain | Outperform | Outperform |
| 2014-08-25 | William Blair | Maintain | Outperform | Outperform |