NASDAQ:ALT | Stock Price History | Altimmune, Inc.

Complete retained daily price history on its own workbook tab. Split-adjusted close keeps every historical share price on one comparable split basis. Cumulative dividend-reinvested close is the daily close of a rebased total-return index: it starts with one share at the earliest retained close, reinvests every distribution, and normalizes every forward and reverse split exactly once. Admitted exchange opening prices remain a distinct current-session series.

Available history
2017-05-26 to 2026-09-04
Data captured

Stock Price Chart

Blue: Split-adjusted close · Orange: Cumulative dividend-reinvested close

$1.48$3.68$9.14$22.69$56.33$139.862017-05-262026-08-27

Logarithmic scale. Both lines share the same starting value for the selected range.

Historical Stock Price

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2026-09-04$3.28155,404
2026-09-03$3.31100,219
2026-09-02$3.14519,341
2026-09-01$3.0999,649
2026-08-31$3.08100,898
2026-08-28$3.22248,255
2026-08-27$3.24$3.242,276,800$3.19118,854
2026-08-26$3.15$3.154,046,200$3.20352,252
2026-08-25$3.20$3.203,814,600$3.14332,278
2026-08-24$3.11$3.112,715,900$3.1392,784
2026-08-21$3.11$3.116,148,000$2.97274,109
2026-08-20$2.95$2.954,681,400$3.08217,930
2026-08-19$3.12$3.1210,824,100$3.061,039,278
2026-08-18$2.97$2.972,472,100$3.00136,293
2026-08-17$3.00$3.004,056,900$2.95170,379
2026-08-14$2.94$2.943,074,000$2.9287,453
2026-08-13$2.88$2.884,109,000$2.96122,687
2026-08-12$2.93$2.936,045,800$3.06245,064
2026-08-11$3.00$3.003,634,600$3.06217,986
2026-08-10$3.05$3.055,260,500$3.08378,104
2026-08-07$3.08$3.084,506,100$3.06304,564
2026-08-06$3.01$3.013,977,300$3.02231,821
2026-08-05$3.03$3.033,164,000$3.08159,911
2026-08-04$3.07$3.078,163,000$3.01722,634
2026-08-03$3.00$3.004,647,300$2.89189,660
2026-07-31$2.84$2.843,892,100$2.98208,723
2026-07-30$2.98$2.985,437,200$2.93364,325
2026-07-29$2.92$2.928,295,600$3.00698,780
2026-07-28$2.99$2.9917,142,600$3.17839,309
2026-07-27$2.96$2.964,059,600$2.83228,516
2026-07-24$2.77$2.771,911,600$2.86191,935
2026-07-23$2.84$2.841,625,800$2.7889,475
2026-07-22$2.81$2.812,290,500$2.8197,700
2026-07-21$2.82$2.821,984,600$2.7987,606
2026-07-20$2.81$2.812,614,500$2.91145,960
2026-07-17$2.87$2.872,963,800
2026-07-16$2.85$2.852,995,400
2026-07-15$2.98$2.982,862,400
2026-07-14$2.93$2.933,299,000
2026-07-13$2.99$2.992,457,100
2026-07-10$3.05$3.052,992,900
2026-07-09$3.12$3.122,877,000
2026-07-08$3.11$3.113,520,300
2026-07-07$3.02$3.024,619,800
2026-07-06$3.08$3.084,348,100
2026-07-02$3.16$3.164,055,500
2026-07-01$3.15$3.157,976,000
2026-06-30$3.04$3.044,332,500
2026-06-29$2.94$2.943,638,900
2026-06-26$2.82$2.8217,105,400
2026-06-25$2.87$2.872,781,400
2026-06-24$2.95$2.953,494,100
2026-06-23$2.91$2.914,223,900
2026-06-22$2.93$2.935,776,500
2026-06-18$2.70$2.7011,688,200
2026-06-17$2.64$2.643,570,900
2026-06-16$2.62$2.622,907,200
2026-06-15$2.64$2.643,516,900
2026-06-12$2.61$2.612,142,300
2026-06-11$2.59$2.593,425,300
2026-06-10$2.61$2.613,042,400
2026-06-09$2.66$2.663,352,800
2026-06-08$2.73$2.732,172,800
2026-06-05$2.71$2.713,129,200
2026-06-04$2.92$2.922,818,700
2026-06-03$2.87$2.873,033,300
2026-06-02$2.90$2.903,144,500
2026-06-01$3.01$3.012,294,400
2026-05-29$3.05$3.052,594,100
2026-05-28$3.07$3.073,932,800
2026-05-27$2.98$2.982,587,800
2026-05-26$2.93$2.932,154,100
2026-05-22$2.90$2.901,988,600
2026-05-21$2.93$2.933,062,800
2026-05-20$2.82$2.822,229,200
2026-05-19$2.74$2.742,514,300
2026-05-18$2.80$2.803,462,100
2026-05-15$2.85$2.852,286,900
2026-05-14$2.92$2.922,388,400
2026-05-13$3.02$3.023,584,600
2026-05-12$3.08$3.082,436,600
2026-05-11$3.09$3.092,937,200
2026-05-08$3.09$3.092,858,200
2026-05-07$3.04$3.043,720,500
2026-05-06$3.26$3.264,096,700
2026-05-05$3.06$3.063,470,400
2026-05-04$3.02$3.025,175,700
2026-05-01$2.82$2.824,956,800
2026-04-30$2.60$2.605,675,500
2026-04-29$2.63$2.634,888,600
2026-04-28$2.74$2.744,870,600
2026-04-27$2.80$2.805,894,900
2026-04-24$2.85$2.8514,733,700
2026-04-23$2.89$2.8930,489,000
2026-04-22$3.47$3.472,948,100
2026-04-21$3.41$3.413,251,000
2026-04-20$3.56$3.562,161,600
2026-04-17$3.50$3.502,868,800
2026-04-16$3.51$3.512,580,500
2026-04-15$3.40$3.402,080,100