Altimmune, Inc. (ALT)
NASDAQ: ALT · Real-Time Price · USD
3.880
+0.340 (9.60%)
At close: Mar 9, 2026, 4:00 PM EDT
3.840
-0.040 (-1.03%)
After-hours: Mar 9, 2026, 7:37 PM EDT
Altimmune Stock Price History
Historical Data
| Date | Open | High | Low | Close | Adj. Close | Change | Volume |
|---|---|---|---|---|---|---|---|
| Mar 9, 2026 | 3.64 | 3.89 | 3.61 | 3.88 | 3.88 | 9.60% | 5,314,913 |
| Mar 6, 2026 | 3.54 | 3.75 | 3.42 | 3.54 | 3.54 | 1.00% | 5,371,259 |
| Mar 5, 2026 | 4.10 | 4.20 | 3.50 | 3.51 | 3.51 | -17.92% | 7,587,160 |
| Mar 4, 2026 | 4.19 | 4.35 | 4.13 | 4.27 | 4.27 | 2.64% | 2,238,014 |
| Mar 3, 2026 | 4.05 | 4.26 | 4.04 | 4.16 | 4.16 | - | 2,858,485 |
| Mar 2, 2026 | 4.24 | 4.27 | 4.15 | 4.16 | 4.16 | -3.48% | 2,379,543 |
| Feb 27, 2026 | 4.40 | 4.47 | 4.29 | 4.31 | 4.31 | -3.36% | 3,018,485 |
| Feb 26, 2026 | 4.56 | 4.59 | 4.38 | 4.46 | 4.46 | -2.19% | 1,902,855 |
| Feb 25, 2026 | 4.59 | 4.61 | 4.49 | 4.56 | 4.56 | -0.22% | 2,056,523 |
| Feb 24, 2026 | 4.52 | 4.83 | 4.52 | 4.57 | 4.57 | 1.11% | 2,978,948 |
| Feb 23, 2026 | 4.34 | 4.64 | 4.34 | 4.52 | 4.52 | 3.20% | 3,179,227 |
| Feb 20, 2026 | 4.49 | 4.51 | 4.36 | 4.38 | 4.38 | -2.45% | 4,136,634 |
| Feb 19, 2026 | 4.47 | 4.53 | 4.27 | 4.49 | 4.49 | 0.67% | 3,275,381 |
| Feb 18, 2026 | 4.50 | 4.55 | 4.42 | 4.46 | 4.46 | -0.89% | 2,829,078 |
| Feb 17, 2026 | 4.54 | 4.64 | 4.48 | 4.50 | 4.50 | -0.66% | 1,885,381 |
| Feb 13, 2026 | 4.62 | 4.75 | 4.53 | 4.53 | 4.53 | -0.88% | 3,887,968 |
| Feb 12, 2026 | 4.65 | 4.70 | 4.47 | 4.57 | 4.57 | -1.30% | 2,236,562 |
| Feb 11, 2026 | 4.72 | 4.75 | 4.54 | 4.63 | 4.63 | -0.43% | 1,866,963 |
| Feb 10, 2026 | 4.70 | 4.83 | 4.62 | 4.65 | 4.65 | -0.85% | 2,140,747 |
| Feb 9, 2026 | 4.85 | 4.96 | 4.65 | 4.69 | 4.69 | -3.70% | 3,722,751 |
| Feb 6, 2026 | 5.00 | 5.09 | 4.84 | 4.87 | 4.87 | -1.02% | 3,846,002 |
| Feb 5, 2026 | 5.09 | 5.28 | 4.88 | 4.92 | 4.92 | -4.09% | 3,972,566 |
| Feb 4, 2026 | 5.47 | 5.53 | 5.09 | 5.13 | 5.13 | -6.22% | 3,557,492 |
| Feb 3, 2026 | 5.55 | 5.64 | 5.21 | 5.47 | 5.47 | -1.44% | 4,565,876 |
| Feb 2, 2026 | 5.56 | 5.75 | 5.26 | 5.55 | 5.55 | -0.89% | 5,175,809 |
| Jan 30, 2026 | 5.05 | 5.66 | 5.03 | 5.60 | 5.60 | 9.80% | 6,280,832 |
| Jan 29, 2026 | 5.22 | 5.49 | 5.03 | 5.10 | 5.10 | -0.39% | 4,089,514 |
| Jan 28, 2026 | 5.93 | 6.36 | 5.04 | 5.12 | 5.12 | -17.15% | 13,079,967 |
| Jan 27, 2026 | 5.64 | 6.22 | 5.60 | 6.18 | 6.18 | 9.19% | 5,788,732 |
| Jan 26, 2026 | 5.50 | 5.69 | 5.19 | 5.66 | 5.66 | 2.91% | 5,736,699 |
| Jan 23, 2026 | 5.40 | 6.44 | 5.34 | 5.50 | 5.50 | 2.23% | 15,507,157 |
| Jan 22, 2026 | 4.65 | 5.40 | 4.65 | 5.38 | 5.38 | 16.45% | 8,194,956 |
| Jan 21, 2026 | 4.25 | 4.63 | 4.19 | 4.62 | 4.62 | 9.22% | 3,909,231 |
| Jan 20, 2026 | 4.10 | 4.26 | 4.03 | 4.23 | 4.23 | -0.24% | 4,516,644 |
| Jan 16, 2026 | 4.30 | 4.37 | 4.17 | 4.24 | 4.24 | - | 2,598,239 |
| Jan 15, 2026 | 4.15 | 4.40 | 4.05 | 4.24 | 4.24 | 1.44% | 4,553,954 |
| Jan 14, 2026 | 4.00 | 4.21 | 3.98 | 4.18 | 4.18 | 4.24% | 3,266,539 |
| Jan 13, 2026 | 4.04 | 4.10 | 3.96 | 4.01 | 4.01 | -0.99% | 2,604,176 |
| Jan 12, 2026 | 4.08 | 4.13 | 4.00 | 4.05 | 4.05 | 0.75% | 2,763,838 |
| Jan 9, 2026 | 4.12 | 4.18 | 3.99 | 4.02 | 4.02 | -1.47% | 3,075,210 |
| Jan 8, 2026 | 4.15 | 4.22 | 4.02 | 4.08 | 4.08 | -2.63% | 3,843,084 |
| Jan 7, 2026 | 4.00 | 4.36 | 3.98 | 4.19 | 4.19 | 5.81% | 7,287,334 |
| Jan 6, 2026 | 4.08 | 4.18 | 3.86 | 3.96 | 3.96 | -3.18% | 5,650,592 |
| Jan 5, 2026 | 4.10 | 4.53 | 3.96 | 4.09 | 4.09 | 16.52% | 27,007,058 |
| Jan 2, 2026 | 3.62 | 3.66 | 3.48 | 3.51 | 3.51 | -2.77% | 3,567,389 |
| Dec 31, 2025 | 3.60 | 3.63 | 3.52 | 3.61 | 3.61 | - | 4,293,108 |
| Dec 30, 2025 | 3.68 | 3.72 | 3.60 | 3.61 | 3.61 | -1.90% | 3,158,386 |
| Dec 29, 2025 | 3.84 | 3.84 | 3.65 | 3.68 | 3.68 | -4.66% | 4,528,500 |
| Dec 26, 2025 | 3.97 | 3.99 | 3.84 | 3.86 | 3.86 | -3.02% | 2,924,280 |
| Dec 24, 2025 | 4.05 | 4.11 | 3.97 | 3.98 | 3.98 | -0.50% | 2,079,886 |