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 — 2023

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2023-12-29$13.20$13.20105,707
2023-12-28$14.70$14.70173,213
2023-12-27$13.50$13.5053,220
2023-12-26$12.60$12.6049,593
2023-12-22$11.70$11.7034,687
2023-12-21$11.10$11.1016,447
2023-12-20$10.95$10.9516,240
2023-12-19$10.80$10.8018,560
2023-12-18$10.80$10.8014,380
2023-12-15$11.10$11.1014,093
2023-12-14$10.95$10.9518,527
2023-12-13$11.10$11.1016,187
2023-12-12$10.50$10.5014,267
2023-12-11$10.95$10.9511,300
2023-12-08$11.25$11.2512,780
2023-12-07$11.10$11.1011,667
2023-12-06$11.10$11.1012,420
2023-12-05$11.40$11.4016,913
2023-12-04$11.10$11.1027,887
2023-12-01$11.40$11.4016,360
2023-11-30$11.10$11.1012,993
2023-11-29$10.95$10.9519,353
2023-11-28$11.70$11.7018,767
2023-11-27$12.15$12.1525,420
2023-11-24$11.85$11.858,473
2023-11-22$11.55$11.5514,847
2023-11-21$11.55$11.5545,473
2023-11-20$11.10$11.1025,720
2023-11-17$10.20$10.2013,887
2023-11-16$10.20$10.2010,813
2023-11-15$9.75$9.7523,707
2023-11-14$9.60$9.6014,927
2023-11-13$9.45$9.4522,527
2023-11-10$9.60$9.6023,780
2023-11-09$9.90$9.9022,813
2023-11-08$10.65$10.6515,013
2023-11-07$11.10$11.1040,160
2023-11-06$10.20$10.2016,173
2023-11-03$10.50$10.5018,993
2023-11-02$10.50$10.5049,167
2023-11-01$10.20$10.2011,773
2023-10-31$10.05$10.0510,413
2023-10-30$9.75$9.7515,793
2023-10-27$10.05$10.059,067
2023-10-26$10.05$10.0520,447
2023-10-25$9.90$9.9012,033
2023-10-24$9.75$9.7510,860
2023-10-23$9.90$9.9017,513
2023-10-20$9.90$9.9016,000
2023-10-19$9.90$9.9023,867
2023-10-18$10.05$10.0516,360
2023-10-17$10.20$10.2028,700
2023-10-16$10.05$10.0518,060
2023-10-13$9.90$9.9015,387
2023-10-12$10.05$10.0540,427
2023-10-11$10.50$10.5024,120
2023-10-10$10.65$10.6513,067
2023-10-09$10.35$10.3528,753
2023-10-06$10.80$10.8014,967
2023-10-05$10.80$10.8011,473
2023-10-04$10.65$10.6521,653
2023-10-03$10.65$10.6511,193
2023-10-02$10.65$10.6525,620
2023-09-29$11.10$11.1015,273
2023-09-28$11.40$11.4021,147
2023-09-27$11.55$11.5564,633
2023-09-26$11.10$11.1074,033
2023-09-25$11.55$11.5526,947
2023-09-22$12.45$12.4536,893
2023-09-21$11.85$11.8512,353
2023-09-20$11.55$11.5518,467
2023-09-19$11.85$11.8515,480
2023-09-18$12.00$12.0033,640
2023-09-15$11.85$11.859,353
2023-09-14$11.85$11.8524,233
2023-09-13$12.00$12.0019,420
2023-09-12$12.30$12.3017,353
2023-09-11$12.90$12.9044,267
2023-09-08$12.45$12.4595,873
2023-09-07$11.10$11.1036,633
2023-09-06$11.55$11.5522,527
2023-09-05$11.55$11.5522,893
2023-09-01$12.00$12.0026,033
2023-08-31$11.85$11.8556,827
2023-08-30$12.45$12.4535,333
2023-08-29$13.05$13.0516,660
2023-08-28$12.75$12.7513,133
2023-08-25$12.75$12.7523,360
2023-08-24$13.05$13.0522,553
2023-08-23$13.50$13.5018,140
2023-08-22$13.80$13.8044,027
2023-08-21$13.80$13.8016,027
2023-08-18$13.35$13.3525,653
2023-08-17$13.20$13.2023,340
2023-08-16$13.35$13.3537,040
2023-08-15$13.20$13.2073,553
2023-08-14$14.40$14.4071,613
2023-08-11$15.75$15.7525,680
2023-08-10$15.45$15.4533,280
2023-08-09$15.45$15.4528,967
2023-08-08$16.05$16.0531,673
2023-08-07$15.60$15.6036,793
2023-08-04$15.90$15.9017,060
2023-08-03$16.20$16.2022,360
2023-08-02$16.20$16.2030,067
2023-08-01$16.50$16.5018,767
2023-07-31$16.50$16.5022,480
2023-07-28$16.65$16.6535,840
2023-07-27$15.60$15.6039,567
2023-07-26$16.20$16.2037,893
2023-07-25$15.75$15.7544,180
2023-07-24$16.35$16.3554,447
2023-07-21$16.95$16.9537,400
2023-07-20$17.10$17.1060,300
2023-07-19$16.05$16.05103,133
2023-07-18$17.10$17.1082,013
2023-07-17$18.00$18.0040,793
2023-07-14$18.60$18.6042,813
2023-07-13$18.15$18.15133,780
2023-07-12$20.25$20.25107,053
2023-07-11$19.05$19.0571,913
2023-07-10$18.00$18.0071,160
2023-07-07$17.85$17.8551,420
2023-07-06$18.45$18.4573,693
2023-07-05$18.00$18.0077,280
2023-07-03$19.50$19.5062,873
2023-06-30$18.90$18.90282,520
2023-06-29$19.20$19.20273,813
2023-06-28$17.55$17.55394,553
2023-06-27$14.40$14.4071,720
2023-06-26$13.20$13.2036,167
2023-06-23$13.35$13.3535,753
2023-06-22$13.65$13.6522,860
2023-06-21$13.80$13.8080,827
2023-06-20$14.40$14.4057,727
2023-06-16$13.05$13.0523,807
2023-06-15$13.50$13.5037,273
2023-06-14$13.50$13.5025,553
2023-06-13$13.95$13.9527,947
2023-06-12$13.80$13.8033,173
2023-06-09$13.20$13.2049,553
2023-06-08$14.55$14.5526,980
2023-06-07$14.40$14.4028,160
2023-06-06$14.25$14.2545,373
2023-06-05$13.80$13.8063,400
2023-06-02$14.10$14.1031,040
2023-06-01$13.80$13.8033,533
2023-05-31$13.95$13.9529,333
2023-05-30$13.80$13.8078,340
2023-05-26$13.05$13.05108,000
2023-05-25$14.55$14.55198,313
2023-05-24$13.05$13.0571,687
2023-05-23$12.60$12.60207,453
2023-05-22$10.95$10.9523,507
2023-05-19$10.95$10.9530,000
2023-05-18$10.65$10.6518,520
2023-05-17$10.65$10.6525,340
2023-05-16$10.65$10.6521,633
2023-05-15$10.65$10.6518,093
2023-05-12$10.50$10.5015,280
2023-05-11$10.20$10.2020,673
2023-05-10$10.20$10.2015,573
2023-05-09$10.80$10.8038,873
2023-05-08$10.50$10.5020,280
2023-05-05$10.35$10.3522,827
2023-05-04$10.20$10.2022,913
2023-05-03$9.90$9.9032,380
2023-05-02$9.60$9.6021,140
2023-05-01$9.00$9.0014,787
2023-04-28$9.60$9.6012,453
2023-04-27$9.45$9.4527,013
2023-04-26$9.00$9.0018,247
2023-04-25$9.45$9.4538,940
2023-04-24$10.05$10.0532,867
2023-04-21$10.50$10.5014,613
2023-04-20$10.80$10.8013,340
2023-04-19$11.10$11.1011,813
2023-04-18$11.25$11.259,307
2023-04-17$11.10$11.1016,033
2023-04-14$11.10$11.1017,887
2023-04-13$11.10$11.1011,033
2023-04-12$10.80$10.8012,733
2023-04-11$11.10$11.1017,140
2023-04-10$10.65$10.6514,167
2023-04-06$10.80$10.808,727
2023-04-05$10.65$10.6522,500
2023-04-04$10.80$10.8010,700
2023-04-03$11.25$11.2527,267
2023-03-31$10.80$10.8022,667
2023-03-30$10.65$10.6527,527
2023-03-29$10.35$10.3519,220
2023-03-28$10.20$10.2017,847
2023-03-27$9.90$9.9018,933
2023-03-24$10.50$10.509,393
2023-03-23$10.20$10.2021,580
2023-03-22$10.80$10.8025,593
2023-03-21$10.05$10.0520,540
2023-03-20$9.90$9.9019,127
2023-03-17$10.35$10.3511,913
2023-03-16$10.20$10.2012,507
2023-03-15$9.75$9.7528,693
2023-03-14$10.05$10.0518,880
2023-03-13$9.75$9.7525,567
2023-03-10$10.05$10.0537,947
2023-03-09$10.65$10.6516,480
2023-03-08$10.65$10.6523,107
2023-03-07$10.80$10.8017,993
2023-03-06$10.80$10.8020,687
2023-03-03$10.80$10.8037,567
2023-03-02$10.80$10.8016,033
2023-03-01$10.95$10.9511,333
2023-02-28$11.10$11.1017,427
2023-02-27$11.40$11.4020,200
2023-02-24$11.25$11.2520,847
2023-02-23$11.10$11.1019,107
2023-02-22$10.80$10.8014,413
2023-02-21$11.25$11.2526,287
2023-02-17$12.00$12.0014,040
2023-02-16$12.15$12.1529,800
2023-02-15$11.55$11.5515,320
2023-02-14$11.70$11.7020,613
2023-02-13$12.00$12.0055,340
2023-02-10$10.95$10.9520,233
2023-02-09$11.40$11.4019,707
2023-02-08$11.55$11.5558,373
2023-02-07$12.45$12.4522,367
2023-02-06$12.30$12.3039,333
2023-02-03$12.45$12.4535,653
2023-02-02$12.45$12.4536,973
2023-02-01$12.00$12.0028,240
2023-01-31$12.00$12.0020,853
2023-01-30$12.00$12.0022,333
2023-01-27$12.30$12.3023,660
2023-01-26$12.15$12.1523,500
2023-01-25$12.60$12.6047,387
2023-01-24$11.40$11.4014,753
2023-01-23$11.70$11.7043,047
2023-01-20$12.15$12.1545,327
2023-01-19$12.60$12.60105,293
2023-01-18$13.65$13.65126,480
2023-01-17$13.65$13.6569,733
2023-01-13$12.75$12.7585,013
2023-01-12$11.25$11.2541,873
2023-01-11$10.80$10.8038,973
2023-01-10$10.05$10.0538,800
2023-01-09$10.50$10.5031,173
2023-01-06$10.80$10.8042,400
2023-01-05$10.65$10.6559,067
2023-01-04$9.30$9.3033,147
2023-01-03$8.85$8.8546,127