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.

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Historical Stock Price — 2018

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2018-12-31$10.20$10.2028,380
2018-12-28$10.70$10.7030,290
2018-12-27$8.80$8.8035,250
2018-12-26$10.70$10.706,780
2018-12-24$11.50$11.505,210
2018-12-21$10.10$10.1025,330
2018-12-20$10.60$10.6010,090
2018-12-19$11.40$11.407,950
2018-12-18$11.30$11.3010,040
2018-12-17$11.50$11.501,790
2018-12-14$11.60$11.602,280
2018-12-13$11.20$11.2012,840
2018-12-12$11.80$11.8017,840
2018-12-11$11.60$11.6010,960
2018-12-10$12.50$12.5010,490
2018-12-07$14.00$14.005,630
2018-12-06$13.30$13.306,730
2018-12-04$14.70$14.70220
2018-12-03$14.50$14.501,710
2018-11-30$15.60$15.609,380
2018-11-29$16.90$16.909,240
2018-11-28$16.80$16.802,510
2018-11-27$17.30$17.307,240
2018-11-26$16.50$16.504,290
2018-11-23$16.80$16.802,540
2018-11-21$17.50$17.503,500
2018-11-20$16.50$16.5010,020
2018-11-19$17.50$17.506,840
2018-11-16$16.90$16.902,700
2018-11-15$17.20$17.204,470
2018-11-14$16.50$16.503,290
2018-11-13$15.80$15.805,470
2018-11-12$14.50$14.501,190
2018-11-09$15.80$15.804,990
2018-11-08$14.50$14.504,440
2018-11-07$13.50$13.502,110
2018-11-06$14.10$14.108,160
2018-11-05$13.60$13.607,610
2018-11-02$13.70$13.703,670
2018-11-01$14.10$14.101,860
2018-10-31$14.40$14.405,290
2018-10-30$14.40$14.401,950
2018-10-29$14.20$14.201,920
2018-10-26$13.80$13.808,350
2018-10-25$14.30$14.3016,370
2018-10-24$14.90$14.901,680
2018-10-23$14.50$14.506,700
2018-10-22$15.20$15.205,420
2018-10-19$14.70$14.709,430
2018-10-18$14.80$14.806,580
2018-10-17$15.10$15.1016,860
2018-10-16$15.00$15.005,520
2018-10-15$14.50$14.5014,200
2018-10-12$15.30$15.3010,550
2018-10-11$14.70$14.703,990
2018-10-10$14.40$14.409,580
2018-10-09$14.50$14.5010,550
2018-10-08$15.30$15.3010,010
2018-10-05$16.00$16.005,820
2018-10-04$16.50$16.506,180
2018-10-03$16.00$16.0014,210
2018-10-02$16.60$16.607,830
2018-10-01$16.00$16.003,970
2018-09-28$16.00$16.009,410
2018-09-27$16.80$16.806,750
2018-09-26$16.50$16.506,450
2018-09-25$17.00$17.009,690
2018-09-24$17.00$17.005,880
2018-09-21$17.00$17.009,150
2018-09-20$17.50$17.5012,280
2018-09-19$17.50$17.502,220
2018-09-18$18.00$18.0016,870
2018-09-17$16.00$16.0055,270
2018-09-14$18.00$18.002,200
2018-09-13$18.00$18.007,280
2018-09-12$18.80$18.8021,530
2018-09-11$19.30$19.309,640
2018-09-10$19.00$19.009,140
2018-09-07$19.50$19.505,360
2018-09-06$19.50$19.507,300
2018-09-05$20.00$20.007,010
2018-09-04$21.00$21.006,740
2018-08-31$20.50$20.5014,460
2018-08-30$21.70$21.7013,350
2018-08-29$21.50$21.506,670
2018-08-28$21.00$21.005,290
2018-08-27$21.00$21.007,710
2018-08-24$21.00$21.005,550
2018-08-23$21.00$21.004,360
2018-08-22$21.50$21.507,690
2018-08-21$21.00$21.009,520
2018-08-20$21.00$21.005,560
2018-08-17$21.50$21.503,130
2018-08-16$21.00$21.0027,040
2018-08-15$21.50$21.5017,390
2018-08-14$20.00$20.0016,100
2018-08-13$19.00$19.001,750
2018-08-10$19.30$19.302,080
2018-08-09$19.00$19.006,340
2018-08-08$19.00$19.004,950
2018-08-07$19.50$19.5010,690
2018-08-06$19.30$19.308,030
2018-08-03$18.50$18.505,900
2018-08-02$19.00$19.003,900
2018-08-01$18.80$18.802,530
2018-07-31$19.00$19.004,830
2018-07-30$19.80$19.808,840
2018-07-27$19.50$19.506,160
2018-07-26$20.30$20.305,320
2018-07-25$19.80$19.808,850
2018-07-24$19.50$19.503,910
2018-07-23$19.80$19.802,010
2018-07-20$19.80$19.802,170
2018-07-19$19.50$19.5010,560
2018-07-18$20.00$20.0014,180
2018-07-17$20.00$20.0019,580
2018-07-16$19.50$19.508,660
2018-07-13$19.80$19.801,730
2018-07-12$20.00$20.005,770
2018-07-11$19.80$19.801,960
2018-07-10$19.50$19.503,110
2018-07-09$19.50$19.504,890
2018-07-06$19.80$19.809,600
2018-07-05$20.00$20.001,430
2018-07-03$19.00$19.004,310
2018-07-02$20.00$20.002,770
2018-06-29$20.00$20.0016,750
2018-06-28$20.00$20.009,250
2018-06-27$18.00$18.009,860
2018-06-26$17.80$17.801,440
2018-06-25$17.50$17.5014,110
2018-06-22$18.50$18.5022,000
2018-06-21$18.50$18.507,110
2018-06-20$19.00$19.009,110
2018-06-19$19.00$19.009,540
2018-06-18$20.00$20.007,210
2018-06-15$21.30$21.305,340
2018-06-14$21.00$21.009,750
2018-06-13$20.50$20.503,120
2018-06-12$21.00$21.002,110
2018-06-11$20.50$20.502,430
2018-06-08$20.80$20.802,130
2018-06-07$20.50$20.504,570
2018-06-06$20.50$20.505,920
2018-06-05$20.50$20.504,950
2018-06-04$20.50$20.504,030
2018-06-01$20.80$20.807,040
2018-05-31$20.00$20.005,500
2018-05-30$20.00$20.004,210
2018-05-29$21.00$21.009,210
2018-05-25$19.50$19.505,010
2018-05-24$19.50$19.504,380
2018-05-23$20.00$20.002,410
2018-05-22$19.50$19.501,670
2018-05-21$19.50$19.504,400
2018-05-18$20.50$20.502,310
2018-05-17$19.80$19.805,350
2018-05-16$19.50$19.507,760
2018-05-15$19.80$19.802,920
2018-05-14$20.00$20.003,210
2018-05-11$19.30$19.309,270
2018-05-10$18.00$18.006,180
2018-05-09$17.50$17.501,870
2018-05-08$17.50$17.5017,710
2018-05-07$17.50$17.501,240
2018-05-04$18.00$18.004,310
2018-05-03$18.50$18.507,420
2018-05-02$18.30$18.307,120
2018-05-01$18.30$18.302,750
2018-04-30$18.00$18.001,390
2018-04-27$18.30$18.302,710
2018-04-26$17.50$17.505,670
2018-04-25$18.00$18.006,190
2018-04-24$17.50$17.5012,660
2018-04-23$17.50$17.5029,230
2018-04-20$18.50$18.508,250
2018-04-19$19.50$19.503,640
2018-04-18$19.00$19.005,130
2018-04-17$19.50$19.507,450
2018-04-16$19.80$19.8012,020
2018-04-13$20.00$20.0016,810
2018-04-12$19.00$19.0020,960
2018-04-11$20.00$20.004,820
2018-04-10$20.00$20.0027,990
2018-04-09$20.00$20.0025,200
2018-04-06$20.50$20.507,100
2018-04-05$21.50$21.5017,320
2018-04-04$21.00$21.006,580
2018-04-03$20.00$20.008,130
2018-04-02$20.00$20.007,890
2018-03-29$20.30$20.3012,280
2018-03-28$19.30$19.3026,350
2018-03-27$20.00$20.0020,420
2018-03-26$20.50$20.5043,890
2018-03-23$20.50$20.5025,140
2018-03-22$22.00$22.0020,650
2018-03-21$22.30$22.3036,350
2018-03-20$23.00$23.0043,250
2018-03-19$22.90$22.9013,980
2018-03-16$23.50$23.505,420
2018-03-15$23.50$23.5020,460
2018-03-14$23.00$23.009,990
2018-03-13$23.00$23.006,770
2018-03-12$23.00$23.0011,480
2018-03-09$23.00$23.0018,480
2018-03-08$24.50$24.5037,950
2018-03-07$23.30$23.3033,330
2018-03-06$23.30$23.3022,190
2018-03-05$23.00$23.0016,600
2018-03-02$23.30$23.3014,390
2018-03-01$22.50$22.5032,770
2018-02-28$22.50$22.5036,280
2018-02-27$23.30$23.3021,850
2018-02-26$24.50$24.5038,580
2018-02-23$24.80$24.80235,330
2018-02-22$23.50$23.5048,380
2018-02-21$25.50$25.506,810
2018-02-20$26.50$26.509,630
2018-02-16$27.30$27.307,420
2018-02-15$28.00$28.0012,860
2018-02-14$28.00$28.0023,450
2018-02-13$26.50$26.5026,510
2018-02-12$23.80$23.8015,260
2018-02-09$24.00$24.0025,190
2018-02-08$22.00$22.0011,100
2018-02-07$22.50$22.5016,660
2018-02-06$21.50$21.5014,670
2018-02-05$21.00$21.0020,470
2018-02-02$22.00$22.0015,040
2018-02-01$21.50$21.5010,470
2018-01-31$21.50$21.5015,520
2018-01-30$23.50$23.5012,780
2018-01-29$25.00$25.0031,610
2018-01-26$26.00$26.0028,500
2018-01-25$23.00$23.0024,360
2018-01-24$22.50$22.5023,220
2018-01-23$22.80$22.8032,950
2018-01-22$23.50$23.5016,580
2018-01-19$25.00$25.008,910
2018-01-18$25.00$25.0014,060
2018-01-17$23.00$23.0029,440
2018-01-16$25.00$25.0021,340
2018-01-12$25.00$25.0028,100
2018-01-11$28.50$28.5024,510
2018-01-10$31.00$31.0034,720
2018-01-09$29.00$29.0039,320
2018-01-08$29.50$29.5025,100
2018-01-05$30.50$30.5065,220
2018-01-04$32.00$32.0027,760
2018-01-03$33.50$33.5018,640
2018-01-02$35.00$35.0036,350