Compass Therapeutics Stock Price History
NASDAQ: CMPXHealth CareBiotechnology: Biological Products (No Diagnostic Substances)USD
0.9834-0.0366 (-3.59%)
At close: Oct 8, 4:00 PM ET · Delayed 15 min
After hours: 0.9834 0.00%
CMPX price history at a glance
The price history for Compass Therapeutics (CMPX) on this page begins on April 5, 2021, when the stock closed at $8.50; it most recently closed at $1.02 on October 5, 2026. The highest price in this record is $11.00, reached on April 12, 2021; the latest close is 90.7% below that peak. Across the 4 complete calendar years in the table, CMPX finished higher in 2 and lower in 2. Its best year was 2025 (+231.4%) and its worst was 2023 (-69.0%).
Over roughly 6 years the share price changed -88.0%, a -32.0% compound annual price return (excluding dividends). In the last 12 months alone, CMPX has lost 71.7%. Prices are split-adjusted closing prices; daily open, high, low, close and volume for the past year are listed below.
Summary generated from market data by MetaCap's automated system. Methodology
Key price levels
- High since 2021
- $11.00
- Date of high
- Apr 12, 2021
- Low since 2021
- $0.765
- Date of low
- Jul 1, 2024
- 52-week high
- $6.88
- 52-week low
- $0.829
- Last close
- $1.02
CMPX returns
1 week
-1.92%
1 month
-53.85%
3 months
-56.41%
6 months
-81.11%
Year to date
-81.01%
1 year
-71.75%
3 years
-46.60%
5 years
-68.22%
CMPX price return, excluding dividends.
CMPX annual returns
| Year | Year-end close | Return |
|---|---|---|
| 2026 | 1.02 | -80.27% |
| 2025 | 5.17 | +231.41% |
| 2024 | 1.56 | 0.00% |
| 2023 | 1.56 | -68.99% |
| 2022 | 5.03 | +58.68% |
| 2021* | 3.17 | -62.71% |
* Partial year: the record begins after the start of 2021; return measured from the first available close.
2026 return is year to date.
CMPX daily prices (past year)
| Date | Open | High | Low | Close | Change |
|---|---|---|---|---|---|
| 0.9705 | 1.06 | 0.965 | 1.02 | +2.20% | |
| 0.99 | 1.02 | 0.94 | 0.998 | +3.85% | |
| 0.91 | 1.00 | 0.89 | 0.961 | +12.14% | |
| 0.94 | 0.98 | 0.829 | 0.857 | -4.88% | |
| 1.03 | 1.06 | 0.901 | 0.901 | -13.37% | |
| 1.10 | 1.10 | 1.02 | 1.04 | -5.45% | |
| 1.13 | 1.15 | 1.09 | 1.10 | -0.90% | |
| 1.15 | 1.15 | 1.10 | 1.11 | -1.77% | |
| 1.17 | 1.20 | 1.12 | 1.13 | -0.44% | |
| 1.17 | 1.17 | 1.10 | 1.14 | -2.99% | |
| 1.22 | 1.23 | 1.13 | 1.17 | -5.65% | |
| 1.25 | 1.44 | 1.15 | 1.24 | -31.87% | |
| 1.88 | 1.88 | 1.80 | 1.82 | -4.21% | |
| 1.86 | 1.90 | 1.81 | 1.90 | +2.70% | |
| 1.88 | 1.94 | 1.84 | 1.85 | +1.09% | |
| 1.87 | 1.90 | 1.80 | 1.83 | -1.08% | |
| 1.98 | 1.98 | 1.85 | 1.85 | -5.61% | |
| 2.03 | 2.04 | 1.96 | 1.96 | -2.00% | |
| 2.08 | 2.09 | 1.96 | 2.00 | -2.44% | |
| 2.17 | 2.17 | 2.04 | 2.05 | -5.96% | |
| 2.22 | 2.25 | 2.17 | 2.18 | -1.36% | |
| 2.32 | 2.33 | 2.20 | 2.21 | -7.14% | |
| 2.34 | 2.45 | 2.33 | 2.38 | +0.42% | |
| 2.44 | 2.44 | 2.35 | 2.37 | -2.47% | |
| 2.31 | 2.46 | 2.31 | 2.43 | +5.19% | |
| 2.37 | 2.40 | 2.29 | 2.31 | -3.35% | |
| 2.40 | 2.40 | 2.31 | 2.39 | -0.42% | |
| 2.51 | 2.51 | 2.40 | 2.40 | -4.76% | |
| 2.44 | 2.53 | 2.40 | 2.52 | +3.70% | |
| 2.51 | 2.52 | 2.41 | 2.43 | -3.95% | |
| 2.40 | 2.55 | 2.39 | 2.53 | +5.42% | |
| 2.42 | 2.43 | 2.32 | 2.40 | 0.00% | |
| 2.39 | 2.45 | 2.33 | 2.40 | +1.69% | |
| 2.42 | 2.46 | 2.31 | 2.36 | -4.84% | |
| 2.42 | 2.52 | 2.41 | 2.48 | +3.77% | |
| 2.28 | 2.44 | 2.24 | 2.39 | +3.46% | |
| 2.20 | 2.37 | 2.20 | 2.31 | +2.67% | |
| 2.30 | 2.30 | 2.23 | 2.25 | -0.44% | |
| 2.36 | 2.37 | 2.23 | 2.26 | -4.64% | |
| 2.20 | 2.39 | 2.17 | 2.37 | +7.73% | |
| 2.20 | 2.38 | 2.20 | 2.20 | -0.90% | |
| 2.15 | 2.23 | 2.11 | 2.22 | +3.26% | |
| 2.05 | 2.18 | 2.03 | 2.15 | +8.04% | |
| 1.93 | 2.00 | 1.87 | 1.99 | +5.29% | |
| 2.00 | 2.01 | 1.85 | 1.89 | -4.55% | |
| 1.90 | 2.00 | 1.89 | 1.98 | +5.04% | |
| 1.94 | 1.95 | 1.85 | 1.89 | -1.31% | |
| 1.95 | 1.96 | 1.86 | 1.91 | -1.55% | |
| 1.93 | 1.96 | 1.91 | 1.94 | 0.00% | |
| 2.04 | 2.04 | 1.94 | 1.94 | -4.90% | |
| 2.07 | 2.08 | 1.97 | 2.04 | -1.92% | |
| 2.11 | 2.23 | 2.08 | 2.08 | +0.48% | |
| 2.12 | 2.14 | 2.06 | 2.07 | -2.36% | |
| 2.02 | 2.14 | 1.99 | 2.12 | +3.92% | |
| 2.09 | 2.11 | 2.00 | 2.04 | -2.86% | |
| 2.02 | 2.10 | 2.01 | 2.10 | +3.96% | |
| 2.07 | 2.13 | 2.01 | 2.02 | -1.46% | |
| 2.06 | 2.12 | 2.01 | 2.05 | -2.38% | |
| 2.13 | 2.15 | 2.07 | 2.10 | -1.87% | |
| 2.18 | 2.19 | 2.11 | 2.14 | -2.28% | |
| 2.25 | 2.26 | 2.18 | 2.19 | -3.10% | |
| 2.30 | 2.31 | 2.19 | 2.26 | -3.00% | |
| 2.30 | 2.36 | 2.19 | 2.33 | +0.87% | |
| 2.33 | 2.36 | 2.27 | 2.31 | -1.28% | |
| 2.26 | 2.35 | 2.21 | 2.34 | +0.86% | |
| 2.30 | 2.32 | 2.15 | 2.32 | +1.31% | |
| 2.27 | 2.30 | 2.20 | 2.29 | +0.88% | |
| 2.20 | 2.29 | 2.17 | 2.27 | +4.13% | |
| 2.18 | 2.21 | 2.13 | 2.18 | -0.46% | |
| 2.16 | 2.29 | 2.13 | 2.19 | +1.39% | |
| 2.08 | 2.17 | 2.07 | 2.16 | +3.85% | |
| 2.06 | 2.13 | 2.02 | 2.08 | +0.48% | |
| 2.03 | 2.11 | 2.02 | 2.07 | +2.48% | |
| 2.06 | 2.10 | 2.02 | 2.02 | -1.94% | |
| 2.04 | 2.11 | 2.04 | 2.06 | -1.90% | |
| 2.04 | 2.10 | 2.02 | 2.10 | +3.96% | |
| 2.08 | 2.13 | 2.00 | 2.02 | -1.46% | |
| 1.99 | 2.14 | 1.99 | 2.05 | +4.06% | |
| 2.01 | 2.04 | 1.96 | 1.97 | -3.43% | |
| 2.05 | 2.10 | 2.02 | 2.04 | +0.49% | |
| 2.00 | 2.08 | 1.98 | 2.03 | +1.00% | |
| 1.91 | 2.04 | 1.88 | 2.01 | +4.69% | |
| 2.06 | 2.11 | 1.91 | 1.92 | -6.80% | |
| 2.04 | 2.10 | 2.03 | 2.06 | +1.98% | |
| 2.04 | 2.07 | 2.00 | 2.02 | -0.98% | |
| 2.10 | 2.12 | 2.03 | 2.04 | -4.23% | |
| 2.07 | 2.18 | 2.07 | 2.13 | +1.43% | |
| 2.08 | 2.11 | 2.04 | 2.10 | +0.96% | |
| 2.13 | 2.17 | 2.06 | 2.08 | -6.31% | |
| 2.31 | 2.32 | 2.18 | 2.22 | -6.72% | |
| 2.43 | 2.47 | 2.29 | 2.38 | -1.24% | |
| 2.23 | 2.44 | 2.16 | 2.41 | +6.17% | |
| 2.18 | 2.44 | 2.18 | 2.27 | +3.18% | |
| 2.04 | 2.23 | 2.01 | 2.20 | +6.28% | |
| 1.91 | 2.15 | 1.88 | 2.07 | +7.25% | |
| 1.84 | 1.99 | 1.84 | 1.93 | +2.12% | |
| 1.80 | 1.91 | 1.78 | 1.89 | +4.42% | |
| 1.80 | 1.84 | 1.75 | 1.81 | -1.09% | |
| 1.86 | 1.94 | 1.79 | 1.83 | -1.61% | |
| 1.93 | 1.96 | 1.85 | 1.86 | -6.06% | |
| 1.92 | 2.02 | 1.88 | 1.98 | +0.51% | |
| 1.88 | 1.99 | 1.83 | 1.97 | +5.35% | |
| 1.83 | 1.90 | 1.81 | 1.87 | +2.19% | |
| 1.78 | 1.91 | 1.78 | 1.83 | 0.00% | |
| 1.80 | 1.90 | 1.75 | 1.83 | +1.10% | |
| 1.86 | 1.87 | 1.75 | 1.81 | -3.21% | |
| 1.90 | 1.95 | 1.84 | 1.87 | -4.10% | |
| 1.95 | 2.00 | 1.84 | 1.95 | +0.52% | |
| 2.00 | 2.02 | 1.86 | 1.94 | -1.02% | |
| 1.79 | 2.01 | 1.75 | 1.96 | +10.73% | |
| 1.69 | 1.82 | 1.67 | 1.77 | +5.99% | |
| 1.91 | 1.91 | 1.64 | 1.67 | -9.24% | |
| 1.91 | 2.18 | 1.80 | 1.84 | +2.79% | |
| 1.77 | 2.49 | 1.61 | 1.79 | -64.41% | |
| 5.22 | 5.49 | 4.90 | 5.03 | -3.45% | |
| 5.32 | 5.34 | 5.11 | 5.21 | -2.07% | |
| 5.36 | 5.39 | 5.22 | 5.32 | +1.53% | |
| 5.42 | 5.58 | 5.19 | 5.24 | -3.23% | |
| 6.11 | 6.24 | 5.41 | 5.42 | -9.75% | |
| 6.60 | 6.67 | 5.87 | 6.00 | -8.12% | |
| 5.87 | 6.85 | 5.81 | 6.53 | +11.62% | |
| 5.48 | 5.92 | 5.38 | 5.85 | +7.54% | |
| 5.20 | 5.48 | 5.14 | 5.44 | +4.62% | |
| 5.18 | 5.25 | 5.01 | 5.20 | +0.58% | |
| 5.45 | 5.50 | 5.00 | 5.17 | -5.14% | |
| 5.32 | 5.60 | 5.30 | 5.45 | +0.93% | |
| 5.50 | 5.59 | 5.29 | 5.40 | +1.69% | |
| 5.45 | 5.53 | 5.20 | 5.31 | -3.28% | |
| 5.47 | 5.73 | 5.46 | 5.49 | +0.73% | |
| 5.25 | 5.50 | 5.18 | 5.45 | +0.37% | |
| 5.41 | 5.51 | 5.11 | 5.43 | +2.65% | |
| 5.26 | 5.38 | 5.06 | 5.29 | +3.73% | |
| 5.21 | 5.24 | 5.07 | 5.10 | -2.11% | |
| 5.29 | 5.37 | 5.15 | 5.21 | -2.25% | |
| 5.41 | 5.67 | 5.30 | 5.33 | -2.91% | |
| 5.42 | 5.56 | 5.39 | 5.49 | +3.00% | |
| 4.96 | 5.39 | 4.87 | 5.33 | +5.75% | |
| 5.16 | 5.29 | 5.00 | 5.04 | -2.14% | |
| 5.40 | 5.44 | 5.14 | 5.15 | -4.45% | |
| 5.27 | 5.40 | 5.19 | 5.39 | +1.32% | |
| 5.41 | 5.41 | 5.23 | 5.32 | -2.39% | |
| 5.39 | 5.54 | 5.31 | 5.45 | +0.74% | |
| 5.24 | 5.53 | 5.20 | 5.41 | +4.24% | |
| 5.27 | 5.36 | 5.07 | 5.19 | 0.00% | |
| 5.50 | 5.59 | 5.18 | 5.19 | -7.16% | |
| 5.60 | 5.70 | 5.48 | 5.59 | +0.36% | |
| 5.49 | 5.78 | 5.42 | 5.57 | +2.77% | |
| 5.34 | 5.54 | 5.29 | 5.42 | -1.63% | |
| 5.41 | 5.53 | 5.29 | 5.51 | -0.36% | |
| 5.53 | 5.87 | 5.44 | 5.53 | -2.81% | |
| 5.59 | 5.88 | 5.54 | 5.69 | +2.89% | |
| 5.50 | 5.86 | 5.43 | 5.53 | -2.64% | |
| 5.44 | 5.81 | 5.32 | 5.68 | +0.53% | |
| 5.73 | 5.83 | 5.61 | 5.65 | -2.25% | |
| 5.93 | 5.94 | 5.60 | 5.78 | -1.87% | |
| 6.00 | 6.07 | 5.81 | 5.89 | -1.83% | |
| 5.93 | 6.03 | 5.84 | 6.00 | +1.87% | |
| 6.15 | 6.20 | 5.75 | 5.89 | -4.54% | |
| 6.31 | 6.43 | 6.14 | 6.17 | -3.44% | |
| 6.43 | 6.50 | 6.25 | 6.39 | -1.24% | |
| 6.37 | 6.60 | 6.30 | 6.47 | +1.25% | |
| 6.25 | 6.55 | 6.23 | 6.39 | +1.75% | |
| 6.53 | 6.60 | 6.21 | 6.28 | -0.95% | |
| 6.44 | 6.50 | 6.26 | 6.34 | -1.55% | |
| 6.60 | 6.67 | 6.29 | 6.44 | -2.42% | |
| 6.79 | 6.82 | 6.52 | 6.60 | -1.35% | |
| 6.50 | 6.82 | 6.40 | 6.69 | +2.61% | |
| 6.35 | 6.69 | 6.29 | 6.52 | +4.82% | |
| 6.27 | 6.56 | 6.20 | 6.22 | -1.74% | |
| 6.65 | 6.67 | 6.25 | 6.33 | -1.40% | |
| 6.59 | 6.88 | 6.25 | 6.42 | -1.53% | |
| 6.39 | 6.71 | 6.38 | 6.52 | +1.87% | |
| 6.29 | 6.47 | 6.21 | 6.40 | +0.31% | |
| 6.17 | 6.44 | 6.06 | 6.38 | +3.57% | |
| 6.45 | 6.49 | 6.05 | 6.16 | -3.90% | |
| 6.16 | 6.48 | 6.13 | 6.41 | +3.55% | |
| 5.85 | 6.21 | 5.69 | 6.19 | +4.92% | |
| 6.25 | 6.35 | 5.89 | 5.90 | -5.90% | |
| 5.93 | 6.40 | 5.92 | 6.27 | +6.27% | |
| 5.71 | 5.96 | 5.64 | 5.90 | +3.33% | |
| 5.60 | 5.81 | 5.50 | 5.71 | +0.18% | |
| 5.82 | 5.85 | 5.55 | 5.70 | -1.72% | |
| 6.11 | 6.25 | 5.62 | 5.80 | -3.97% | |
| 5.57 | 6.17 | 5.43 | 6.04 | +8.24% | |
| 5.18 | 5.62 | 5.15 | 5.58 | +7.10% | |
| 5.37 | 5.44 | 5.09 | 5.21 | -2.62% | |
| 5.20 | 5.70 | 5.16 | 5.35 | +3.48% | |
| 5.41 | 5.41 | 5.13 | 5.17 | -5.14% | |
| 4.93 | 5.57 | 4.93 | 5.45 | +11.00% | |
| 4.91 | 5.05 | 4.79 | 4.91 | -1.60% | |
| 5.36 | 5.36 | 4.85 | 4.99 | -3.48% | |
| 5.36 | 5.41 | 5.05 | 5.17 | -3.72% | |
| 5.37 | 5.45 | 5.19 | 5.37 | -0.19% | |
| 5.22 | 5.39 | 5.06 | 5.38 | +4.47% | |
| 5.10 | 5.22 | 5.05 | 5.15 | -0.39% | |
| 5.14 | 5.20 | 5.05 | 5.17 | +0.58% | |
| 5.18 | 5.20 | 5.03 | 5.14 | 0.00% | |
| 5.15 | 5.24 | 5.03 | 5.14 | 0.00% | |
| 5.03 | 5.27 | 5.00 | 5.14 | +3.01% | |
| 5.07 | 5.19 | 4.95 | 4.99 | -0.99% | |
| 5.11 | 5.15 | 4.95 | 5.04 | +1.61% | |
| 5.25 | 5.30 | 4.83 | 4.96 | -5.34% | |
| 5.01 | 5.32 | 5.00 | 5.24 | +3.15% | |
| 5.18 | 5.28 | 5.05 | 5.08 | -1.55% | |
| 5.38 | 5.43 | 5.15 | 5.16 | -4.27% | |
| 5.25 | 5.44 | 5.17 | 5.39 | +2.67% | |
| 5.17 | 5.36 | 5.10 | 5.25 | +2.14% | |
| 5.36 | 5.39 | 5.09 | 5.14 | -4.10% | |
| 5.59 | 5.76 | 5.31 | 5.36 | -3.07% | |
| 5.59 | 5.74 | 5.48 | 5.53 | -0.18% | |
| 5.25 | 5.61 | 5.25 | 5.54 | +4.92% | |
| 5.39 | 5.39 | 5.17 | 5.28 | +1.15% | |
| 5.60 | 5.65 | 5.13 | 5.22 | -4.40% | |
| 5.85 | 5.86 | 5.33 | 5.46 | -5.86% | |
| 5.51 | 5.85 | 5.45 | 5.80 | +7.61% | |
| 5.09 | 5.40 | 4.96 | 5.39 | +7.58% | |
| 4.99 | 5.03 | 4.73 | 5.01 | +1.21% | |
| 4.95 | 5.16 | 4.92 | 4.95 | +1.64% | |
| 4.85 | 5.00 | 4.81 | 4.87 | +0.41% | |
| 4.94 | 5.07 | 4.79 | 4.85 | -1.02% | |
| 4.93 | 5.11 | 4.90 | 4.90 | -0.61% | |
| 4.86 | 5.05 | 4.83 | 4.93 | +0.82% | |
| 4.87 | 5.06 | 4.77 | 4.89 | +1.24% | |
| 4.66 | 5.03 | 4.62 | 4.83 | +1.26% | |
| 4.90 | 4.92 | 4.69 | 4.77 | -2.65% | |
| 4.61 | 5.05 | 4.54 | 4.90 | +5.83% | |
| 4.22 | 4.68 | 4.22 | 4.63 | +8.18% | |
| 4.24 | 4.36 | 4.07 | 4.28 | +1.18% | |
| 4.00 | 4.24 | 3.81 | 4.23 | +5.75% | |
| 3.82 | 4.10 | 3.78 | 4.00 | +4.71% | |
| 3.82 | 3.91 | 3.49 | 3.82 | +0.79% | |
| 3.69 | 3.89 | 3.67 | 3.79 | +1.34% | |
| 3.77 | 3.95 | 3.65 | 3.74 | 0.00% | |
| 3.72 | 3.84 | 3.63 | 3.74 | +0.54% | |
| 3.74 | 3.85 | 3.68 | 3.72 | -1.59% | |
| 4.08 | 4.08 | 3.77 | 3.78 | -7.80% | |
| 4.09 | 4.27 | 3.99 | 4.10 | -0.24% | |
| 3.98 | 4.20 | 3.95 | 4.11 | +3.53% | |
| 3.90 | 4.11 | 3.89 | 3.97 | +2.06% | |
| 4.14 | 4.17 | 3.86 | 3.89 | -6.49% | |
| 4.06 | 4.21 | 3.88 | 4.16 | +1.46% | |
| 4.05 | 4.26 | 4.00 | 4.10 | +1.23% | |
| 4.28 | 4.37 | 4.01 | 4.05 | -4.93% | |
| 4.35 | 4.46 | 4.15 | 4.26 | -5.75% | |
| 4.77 | 4.86 | 4.43 | 4.52 | -5.24% | |
| 4.34 | 4.78 | 4.34 | 4.77 | +9.91% | |
| 4.20 | 4.39 | 4.12 | 4.34 | +1.28% | |
| 4.25 | 4.40 | 4.06 | 4.29 | +1.06% | |
| 4.07 | 4.31 | 4.00 | 4.24 | +4.18% | |
| 3.88 | 4.09 | 3.84 | 4.07 | +4.36% | |
| 3.61 | 3.93 | 3.55 | 3.90 | +8.03% | |
| 3.67 | 3.68 | 3.52 | 3.61 | — |
Prices are adjusted for stock splits. See adjusted closing price for how dividends and splits affect history, and the CMPX chart for longer ranges.