NASDAQ:CLIR | Historical Stock Price | ClearSign Technologies Corp

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
2012-04-25 to 2026-09-04
Data captured

Stock Price Chart

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

$3.20$6.64$13.75$28.50$59.07$122.432012-04-252026-08-27

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

View year

Historical Stock Price — 2021

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2021-12-31$13.80$13.808,980
2021-12-30$14.10$14.107,110
2021-12-29$13.90$13.9013,990
2021-12-28$13.50$13.5015,270
2021-12-27$14.20$14.208,110
2021-12-23$14.50$14.5010,410
2021-12-22$14.60$14.6010,030
2021-12-21$13.90$13.9014,150
2021-12-20$12.60$12.6018,790
2021-12-17$12.40$12.4027,990
2021-12-16$13.80$13.8011,250
2021-12-15$13.90$13.908,950
2021-12-14$14.20$14.2019,220
2021-12-13$13.50$13.5014,090
2021-12-10$14.40$14.406,070
2021-12-09$14.70$14.7011,530
2021-12-08$15.10$15.1013,810
2021-12-07$15.20$15.208,380
2021-12-06$14.20$14.2020,520
2021-12-03$13.40$13.4032,840
2021-12-02$15.40$15.4017,010
2021-12-01$16.00$16.0014,950
2021-11-30$16.60$16.6030,480
2021-11-29$17.20$17.2032,310
2021-11-26$18.40$18.4020,660
2021-11-24$18.70$18.7061,560
2021-11-23$18.50$18.5085,540
2021-11-22$21.80$21.80114,670
2021-11-19$19.30$19.30124,050
2021-11-18$20.60$20.601,786,110
2021-11-17$15.10$15.1019,850
2021-11-16$16.00$16.0023,730
2021-11-15$17.80$17.808,420
2021-11-12$18.30$18.3022,990
2021-11-11$16.60$16.606,410
2021-11-10$16.20$16.209,450
2021-11-09$16.00$16.0013,880
2021-11-08$16.00$16.0044,280
2021-11-05$15.30$15.3021,100
2021-11-04$16.10$16.1019,310
2021-11-03$15.50$15.5048,330
2021-11-02$16.00$16.0023,950
2021-11-01$16.60$16.604,680
2021-10-29$16.20$16.2015,300
2021-10-28$16.40$16.4017,420
2021-10-27$17.10$17.108,810
2021-10-26$18.10$18.108,490
2021-10-25$17.90$17.907,620
2021-10-22$18.10$18.105,800
2021-10-21$19.70$19.7010,700
2021-10-20$18.60$18.602,430
2021-10-19$18.40$18.402,090
2021-10-18$18.30$18.305,030
2021-10-15$18.70$18.706,350
2021-10-14$18.60$18.6021,180
2021-10-13$19.90$19.907,540
2021-10-12$20.20$20.2025,120
2021-10-11$17.30$17.308,650
2021-10-08$18.10$18.1012,720
2021-10-07$17.70$17.7021,440
2021-10-06$17.60$17.6021,230
2021-10-05$19.50$19.5018,440
2021-10-04$19.80$19.806,020
2021-10-01$20.40$20.408,650
2021-09-30$20.00$20.0024,530
2021-09-29$20.90$20.9016,070
2021-09-28$22.10$22.108,380
2021-09-27$22.90$22.9011,030
2021-09-24$23.00$23.007,870
2021-09-23$23.70$23.704,670
2021-09-22$22.80$22.8012,900
2021-09-21$22.40$22.406,710
2021-09-20$22.60$22.607,870
2021-09-17$24.00$24.0025,700
2021-09-16$21.90$21.907,360
2021-09-15$22.30$22.309,740
2021-09-14$21.80$21.8012,450
2021-09-13$23.10$23.1011,290
2021-09-10$22.60$22.608,450
2021-09-09$23.10$23.1017,380
2021-09-08$22.50$22.5021,250
2021-09-07$24.90$24.90111,910
2021-09-03$22.00$22.00112,990
2021-09-02$30.10$30.103,960
2021-09-01$30.40$30.408,030
2021-08-31$31.40$31.403,500
2021-08-30$30.90$30.902,170
2021-08-27$29.60$29.607,220
2021-08-26$30.30$30.303,280
2021-08-25$30.20$30.2014,890
2021-08-24$29.00$29.008,240
2021-08-23$30.60$30.6010,740
2021-08-20$30.10$30.1020,750
2021-08-19$32.20$32.207,040
2021-08-18$33.20$33.203,080
2021-08-17$34.40$34.409,320
2021-08-16$33.80$33.8015,580
2021-08-13$36.70$36.705,840
2021-08-12$36.70$36.703,500
2021-08-11$35.80$35.803,400
2021-08-10$35.50$35.502,700
2021-08-09$35.50$35.503,610
2021-08-06$36.20$36.204,100
2021-08-05$36.40$36.403,280
2021-08-04$35.50$35.504,390
2021-08-03$36.10$36.1019,710
2021-08-02$36.70$36.7021,870
2021-07-30$41.00$41.008,270
2021-07-29$42.00$42.004,760
2021-07-28$41.50$41.502,390
2021-07-27$41.20$41.203,630
2021-07-26$40.60$40.605,070
2021-07-23$43.30$43.301,770
2021-07-22$43.60$43.602,120
2021-07-21$44.10$44.103,370
2021-07-20$42.70$42.7014,240
2021-07-19$38.80$38.8013,350
2021-07-16$42.10$42.106,250
2021-07-15$42.00$42.007,000
2021-07-14$43.00$43.006,760
2021-07-13$46.30$46.303,660
2021-07-12$46.60$46.602,570
2021-07-09$46.40$46.401,970
2021-07-08$44.50$44.503,020
2021-07-07$44.20$44.2011,490
2021-07-06$46.60$46.606,230
2021-07-02$48.60$48.605,740
2021-07-01$49.00$49.009,070
2021-06-30$48.00$48.004,870
2021-06-29$48.00$48.003,460
2021-06-28$47.10$47.107,270
2021-06-25$49.50$49.5014,450
2021-06-24$49.50$49.503,950
2021-06-23$49.50$49.506,270
2021-06-22$47.80$47.803,660
2021-06-21$47.60$47.606,850
2021-06-18$46.00$46.008,290
2021-06-17$47.50$47.506,450
2021-06-16$49.10$49.1025,020
2021-06-15$51.00$51.0010,530
2021-06-14$52.10$52.108,570
2021-06-11$52.70$52.703,520
2021-06-10$52.20$52.205,420
2021-06-09$51.30$51.304,630
2021-06-08$52.30$52.3010,650
2021-06-07$50.40$50.408,950
2021-06-04$49.20$49.206,960
2021-06-03$51.80$51.8010,870
2021-06-02$50.70$50.7012,160
2021-06-01$49.10$49.105,650
2021-05-28$49.20$49.2014,760
2021-05-27$48.10$48.108,760
2021-05-26$47.10$47.105,830
2021-05-25$44.60$44.603,130
2021-05-24$45.90$45.903,860
2021-05-21$46.70$46.706,960
2021-05-20$46.40$46.406,050
2021-05-19$43.90$43.906,060
2021-05-18$42.40$42.406,440
2021-05-17$40.20$40.2016,310
2021-05-14$41.70$41.7010,480
2021-05-13$39.90$39.9019,790
2021-05-12$41.10$41.1010,150
2021-05-11$43.60$43.6012,750
2021-05-10$41.50$41.5018,950
2021-05-07$44.20$44.2012,570
2021-05-06$42.20$42.2021,090
2021-05-05$44.80$44.8011,350
2021-05-04$43.30$43.3016,480
2021-05-03$46.40$46.4022,110
2021-04-30$47.80$47.8011,580
2021-04-29$47.80$47.8038,990
2021-04-28$50.00$50.00102,590
2021-04-27$43.00$43.0013,390
2021-04-26$43.70$43.7012,030
2021-04-23$43.70$43.708,510
2021-04-22$41.50$41.5024,970
2021-04-21$42.90$42.9015,310
2021-04-20$44.20$44.2014,850
2021-04-19$45.80$45.8027,330
2021-04-16$51.30$51.3029,350
2021-04-15$46.60$46.6018,340
2021-04-14$44.00$44.0018,180
2021-04-13$44.30$44.3021,660
2021-04-12$45.80$45.8023,190
2021-04-09$50.10$50.1019,010
2021-04-08$52.20$52.2011,170
2021-04-07$50.50$50.5022,210
2021-04-06$54.40$54.4030,600
2021-04-05$56.90$56.9027,350
2021-04-01$58.00$58.0048,930
2021-03-31$56.80$56.8064,600
2021-03-30$56.00$56.0047,800
2021-03-29$53.90$53.9021,240
2021-03-26$52.80$52.8012,920
2021-03-25$51.00$51.0017,900
2021-03-24$49.70$49.7027,660
2021-03-23$47.00$47.0031,540
2021-03-22$53.20$53.2042,980
2021-03-19$48.10$48.1013,530
2021-03-18$45.70$45.7015,730
2021-03-17$48.50$48.507,350
2021-03-16$47.80$47.806,270
2021-03-15$48.60$48.608,170
2021-03-12$50.30$50.3031,740
2021-03-11$46.80$46.805,310
2021-03-10$45.70$45.706,480
2021-03-09$45.90$45.9011,590
2021-03-08$44.00$44.0011,060
2021-03-05$44.60$44.6028,060
2021-03-04$42.00$42.0020,610
2021-03-03$46.10$46.1011,290
2021-03-02$48.10$48.109,350
2021-03-01$47.90$47.908,990
2021-02-26$47.30$47.3023,340
2021-02-25$47.40$47.4029,930
2021-02-24$48.70$48.7020,190
2021-02-23$43.30$43.3042,680
2021-02-22$42.70$42.7027,320
2021-02-19$50.30$50.3047,660
2021-02-18$46.70$46.7019,710
2021-02-17$46.20$46.2028,920
2021-02-16$46.00$46.0034,370
2021-02-12$43.30$43.3014,120
2021-02-11$40.80$40.8032,700
2021-02-10$44.40$44.4014,620
2021-02-09$45.00$45.0020,890
2021-02-08$45.30$45.3027,730
2021-02-05$44.20$44.2021,130
2021-02-04$43.10$43.1026,110
2021-02-03$45.20$45.2083,170
2021-02-02$39.50$39.5059,670
2021-02-01$39.90$39.907,340
2021-01-29$39.90$39.9016,040
2021-01-28$40.20$40.2010,360
2021-01-27$39.60$39.6025,650
2021-01-26$38.30$38.308,660
2021-01-25$39.20$39.2018,220
2021-01-22$39.70$39.708,410
2021-01-21$39.40$39.408,040
2021-01-20$38.50$38.5024,470
2021-01-19$39.30$39.3026,370
2021-01-15$39.30$39.3026,530
2021-01-14$39.10$39.1022,600
2021-01-13$39.10$39.1015,320
2021-01-12$38.50$38.5039,580
2021-01-11$38.60$38.6047,840
2021-01-08$33.70$33.7056,620
2021-01-07$31.70$31.7021,220
2021-01-06$29.90$29.9011,100
2021-01-05$29.40$29.4012,490
2021-01-04$28.80$28.8022,760