NASDAQ:ATOS | Historical Stock Price | ATOSSA THERAPEUTICS, 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
2012-11-08 to 2026-09-04
Data captured

Stock Price Chart

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

$1.79$12.58$88.67$624.73$4,401.82$31,014.902012-11-082026-08-27

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

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Historical Stock Price — 2021

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2021-12-31$24.00$24.00222,773
2021-12-30$24.90$24.90223,667
2021-12-29$24.00$24.00277,480
2021-12-28$24.90$24.90303,660
2021-12-27$25.50$25.50309,540
2021-12-23$27.00$27.00232,987
2021-12-22$27.60$27.60155,473
2021-12-21$27.90$27.90197,427
2021-12-20$28.05$28.05149,367
2021-12-17$29.55$29.55201,300
2021-12-16$28.50$28.50158,707
2021-12-15$29.55$29.55215,860
2021-12-14$28.65$28.65185,980
2021-12-13$29.55$29.55203,007
2021-12-10$30.15$30.15166,000
2021-12-09$31.65$31.65134,433
2021-12-08$33.60$33.60167,420
2021-12-07$32.10$32.10168,840
2021-12-06$30.15$30.15257,573
2021-12-03$28.95$28.95388,293
2021-12-02$31.50$31.50254,280
2021-12-01$30.90$30.90264,653
2021-11-30$34.05$34.05255,200
2021-11-29$32.25$32.25186,053
2021-11-26$34.20$34.20129,007
2021-11-24$34.35$34.35148,727
2021-11-23$33.45$33.45263,640
2021-11-22$35.25$35.25195,067
2021-11-19$35.25$35.25236,733
2021-11-18$34.35$34.35392,767
2021-11-17$36.60$36.60138,460
2021-11-16$37.50$37.50189,087
2021-11-15$38.55$38.55200,693
2021-11-12$39.75$39.75225,100
2021-11-11$38.55$38.55231,153
2021-11-10$38.55$38.55320,413
2021-11-09$39.45$39.45218,407
2021-11-08$40.95$40.95199,787
2021-11-05$41.10$41.10166,940
2021-11-04$42.15$42.15162,820
2021-11-03$42.60$42.60188,640
2021-11-02$41.70$41.70156,780
2021-11-01$42.15$42.15305,540
2021-10-29$38.55$38.55190,747
2021-10-28$40.05$40.05277,807
2021-10-27$39.45$39.45161,827
2021-10-26$39.90$39.90260,793
2021-10-25$41.40$41.40233,893
2021-10-22$41.70$41.70227,220
2021-10-21$42.45$42.45160,513
2021-10-20$43.65$43.65171,900
2021-10-19$43.50$43.50274,613
2021-10-18$41.70$41.70313,473
2021-10-15$42.90$42.90314,067
2021-10-14$43.65$43.65380,400
2021-10-13$45.75$45.75200,747
2021-10-12$45.45$45.45275,960
2021-10-11$46.95$46.95146,107
2021-10-08$47.70$47.70150,707
2021-10-07$49.05$49.05186,753
2021-10-06$45.75$45.75150,873
2021-10-05$46.50$46.50176,960
2021-10-04$45.90$45.90211,073
2021-10-01$48.75$48.75187,507
2021-09-30$48.90$48.90417,913
2021-09-29$47.25$47.25296,580
2021-09-28$49.20$49.20342,140
2021-09-27$51.75$51.75301,067
2021-09-24$50.70$50.70265,493
2021-09-23$52.65$52.65289,940
2021-09-22$50.70$50.70275,407
2021-09-21$49.20$49.20171,233
2021-09-20$49.20$49.20451,173
2021-09-17$53.70$53.70603,180
2021-09-16$51.15$51.15212,733
2021-09-15$49.95$49.95431,907
2021-09-14$48.90$48.90436,080
2021-09-13$52.50$52.50784,420
2021-09-10$59.55$59.55748,753
2021-09-09$54.90$54.90263,547
2021-09-08$53.40$53.40293,347
2021-09-07$54.90$54.90324,173
2021-09-03$56.25$56.25468,307
2021-09-02$57.00$57.001,048,113
2021-09-01$56.40$56.40644,260
2021-08-31$57.00$57.00539,993
2021-08-30$52.95$52.95434,493
2021-08-27$55.95$55.95350,373
2021-08-26$56.55$56.55317,407
2021-08-25$55.65$55.65395,607
2021-08-24$54.90$54.90560,320
2021-08-23$50.25$50.25389,127
2021-08-20$48.90$48.90232,833
2021-08-19$48.00$48.00294,093
2021-08-18$48.90$48.90344,240
2021-08-17$48.45$48.45375,967
2021-08-16$46.95$46.95286,653
2021-08-13$48.30$48.30382,240
2021-08-12$49.65$49.65555,507
2021-08-11$47.70$47.70480,340
2021-08-10$49.35$49.35292,787
2021-08-09$49.95$49.95309,020
2021-08-06$50.70$50.70366,993
2021-08-05$49.95$49.95588,793
2021-08-04$47.25$47.251,431,967
2021-08-03$43.35$43.35595,773
2021-08-02$43.65$43.65828,907
2021-07-30$44.85$44.852,752,367
2021-07-29$58.50$58.50517,260
2021-07-28$59.25$59.25504,280
2021-07-27$58.80$58.80541,700
2021-07-26$59.40$59.40821,940
2021-07-23$62.70$62.701,477,813
2021-07-22$61.65$61.65538,680
2021-07-21$63.60$63.60988,167
2021-07-20$59.10$59.10777,967
2021-07-19$58.50$58.501,661,193
2021-07-16$67.50$67.502,986,047
2021-07-15$84.30$84.301,275,640
2021-07-14$95.25$95.251,887,820
2021-07-13$95.10$95.102,578,800
2021-07-12$83.85$83.85791,860
2021-07-09$79.80$79.80964,813
2021-07-08$83.25$83.25659,153
2021-07-07$83.25$83.25888,687
2021-07-06$85.35$85.351,717,247
2021-07-02$80.55$80.551,858,833
2021-07-01$96.00$96.00941,407
2021-06-30$94.80$94.802,089,047
2021-06-29$108.30$108.301,183,293
2021-06-28$123.75$123.752,697,867
2021-06-25$129.30$129.306,167,547
2021-06-24$118.80$118.803,612,353
2021-06-23$107.25$107.251,510,547
2021-06-22$105.30$105.305,113,333
2021-06-21$88.35$88.35981,080
2021-06-18$80.25$80.251,112,733
2021-06-17$77.10$77.101,526,800
2021-06-16$69.75$69.75506,927
2021-06-15$69.30$69.30538,540
2021-06-14$69.30$69.30930,753
2021-06-11$64.65$64.65926,107
2021-06-10$61.05$61.051,687,393
2021-06-09$66.00$66.003,642,593
2021-06-08$91.05$91.052,917,653
2021-06-07$90.15$90.154,225,893
2021-06-04$69.30$69.301,168,747
2021-06-03$66.60$66.601,323,007
2021-06-02$59.10$59.101,522,767
2021-06-01$58.05$58.051,376,640
2021-05-28$48.30$48.30332,587
2021-05-27$47.70$47.70409,167
2021-05-26$46.80$46.80464,767
2021-05-25$45.90$45.90411,200
2021-05-24$47.40$47.40416,247
2021-05-21$48.45$48.45771,673
2021-05-20$48.75$48.75452,427
2021-05-19$48.45$48.45602,673
2021-05-18$47.85$47.851,256,667
2021-05-17$48.45$48.452,174,873
2021-05-14$43.50$43.501,609,507
2021-05-13$35.40$35.40561,100
2021-05-12$36.90$36.90610,160
2021-05-11$39.30$39.30768,833
2021-05-10$41.55$41.551,304,393
2021-05-07$41.10$41.101,241,953
2021-05-06$35.40$35.40865,887
2021-05-05$36.30$36.30957,913
2021-05-04$34.65$34.65592,407
2021-05-03$37.20$37.20781,967
2021-04-30$34.95$34.951,010,020
2021-04-29$34.80$34.802,514,647
2021-04-28$33.00$33.001,389,760
2021-04-27$29.40$29.40514,560
2021-04-26$29.40$29.40350,873
2021-04-23$26.55$26.55295,500
2021-04-22$26.10$26.10342,673
2021-04-21$25.50$25.50279,600
2021-04-20$23.25$23.25365,780
2021-04-19$22.80$22.80461,953
2021-04-16$24.45$24.45365,020
2021-04-15$25.95$25.95444,100
2021-04-14$27.90$27.90435,120
2021-04-13$27.60$27.60379,707
2021-04-12$28.50$28.50468,167
2021-04-09$30.30$30.30185,860
2021-04-08$30.90$30.90422,707
2021-04-07$32.40$32.40371,940
2021-04-06$30.60$30.60237,513
2021-04-05$31.80$31.80421,580
2021-04-01$32.40$32.40449,700
2021-03-31$31.65$31.65471,140
2021-03-30$30.75$30.75465,867
2021-03-29$30.75$30.75602,380
2021-03-26$32.40$32.40604,233
2021-03-25$33.90$33.90603,693
2021-03-24$32.40$32.40692,373
2021-03-23$35.85$35.85513,760
2021-03-22$37.50$37.501,366,173
2021-03-19$41.70$41.70686,867
2021-03-18$40.65$40.65377,527
2021-03-17$43.50$43.50437,647
2021-03-16$40.80$40.80484,673
2021-03-15$43.65$43.65394,967
2021-03-12$43.65$43.65803,440
2021-03-11$48.30$48.303,141,147
2021-03-10$43.65$43.651,823,013
2021-03-09$37.20$37.20920,940
2021-03-08$31.95$31.95425,880
2021-03-05$33.45$33.45838,553
2021-03-04$32.10$32.10798,913
2021-03-03$38.25$38.25605,153
2021-03-02$40.65$40.65395,893
2021-03-01$42.75$42.751,203,947
2021-02-26$40.80$40.80785,347
2021-02-25$43.65$43.651,517,767
2021-02-24$41.70$41.70431,273
2021-02-23$38.25$38.25942,933
2021-02-22$43.95$43.95798,780
2021-02-19$46.65$46.65514,933
2021-02-18$46.65$46.65607,013
2021-02-17$49.35$49.35814,627
2021-02-16$52.20$52.20670,340
2021-02-12$54.60$54.602,094,827
2021-02-11$47.85$47.851,285,240
2021-02-10$52.20$52.201,434,800
2021-02-09$56.10$56.101,274,733
2021-02-08$57.90$57.901,364,033
2021-02-05$58.35$58.352,551,333
2021-02-04$64.95$64.958,425,240
2021-02-03$48.75$48.753,753,887
2021-02-02$42.00$42.005,239,193
2021-02-01$35.55$35.551,601,267
2021-01-29$33.15$33.151,206,407
2021-01-28$31.20$31.201,593,333
2021-01-27$33.30$33.303,062,047
2021-01-26$39.15$39.1510,166,247
2021-01-25$44.70$44.706,937,247
2021-01-22$28.05$28.052,748,940
2021-01-21$25.05$25.054,164,460
2021-01-20$23.10$23.101,431,813
2021-01-19$21.15$21.151,165,173
2021-01-15$18.75$18.751,046,960
2021-01-14$18.75$18.751,664,100
2021-01-13$17.70$17.701,636,913
2021-01-12$15.75$15.751,054,773
2021-01-11$16.50$16.501,936,860
2021-01-08$14.40$14.40763,340
2021-01-07$14.25$14.25830,940
2021-01-06$13.80$13.802,125,340
2021-01-05$17.10$17.101,519,340
2021-01-04$14.25$14.25458,547