NYSE:ASPN | Historical Stock Price | ASPEN AEROGELS 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
2014-06-13 to 2026-09-04
Data captured

Stock Price Chart

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

$1.86$3.79$7.71$15.70$31.95$65.022014-06-132026-08-27

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

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Historical Stock Price — 2025

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2025-12-31$2.83$2.832,772,400
2025-12-30$2.95$2.957,043,100
2025-12-29$2.97$2.972,232,500
2025-12-26$2.94$2.941,230,200
2025-12-24$2.97$2.97698,100
2025-12-23$2.95$2.951,829,000
2025-12-22$2.91$2.911,369,700
2025-12-19$2.96$2.962,707,400
2025-12-18$2.90$2.901,673,600
2025-12-17$2.94$2.942,006,600
2025-12-16$3.08$3.081,565,800
2025-12-15$3.11$3.111,308,100
2025-12-12$3.22$3.221,047,600
2025-12-11$3.37$3.371,184,000
2025-12-10$3.30$3.301,594,900
2025-12-09$3.30$3.301,625,400
2025-12-08$3.29$3.291,710,400
2025-12-05$3.54$3.541,887,500
2025-12-04$3.63$3.632,561,900
2025-12-03$3.48$3.481,533,400
2025-12-02$3.42$3.422,133,000
2025-12-01$3.36$3.362,455,400
2025-11-28$3.22$3.221,590,500
2025-11-26$3.16$3.161,298,400
2025-11-25$3.21$3.211,344,900
2025-11-24$3.13$3.132,119,600
2025-11-21$3.10$3.102,849,800
2025-11-20$2.93$2.932,446,700
2025-11-19$3.08$3.082,342,500
2025-11-18$3.12$3.122,791,700
2025-11-17$3.06$3.063,002,100
2025-11-14$3.08$3.084,281,700
2025-11-13$3.22$3.224,254,900
2025-11-12$3.43$3.432,654,500
2025-11-11$3.62$3.623,579,000
2025-11-10$3.67$3.674,676,500
2025-11-07$3.86$3.869,068,900
2025-11-06$4.11$4.1114,122,400
2025-11-05$7.41$7.411,752,200
2025-11-04$7.19$7.192,044,000
2025-11-03$7.75$7.751,685,900
2025-10-31$8.14$8.143,377,900
2025-10-30$7.53$7.531,175,400
2025-10-29$7.90$7.901,461,300
2025-10-28$7.99$7.991,043,000
2025-10-27$8.13$8.131,819,600
2025-10-24$8.50$8.501,406,000
2025-10-23$8.15$8.151,177,700
2025-10-22$7.81$7.811,862,200
2025-10-21$7.92$7.921,955,200
2025-10-20$8.31$8.311,141,600
2025-10-17$7.94$7.941,708,200
2025-10-16$8.31$8.313,127,300
2025-10-15$8.82$8.822,525,100
2025-10-14$8.09$8.092,404,600
2025-10-13$8.46$8.462,024,700
2025-10-10$7.97$7.973,863,300
2025-10-09$7.95$7.951,522,000
2025-10-08$8.31$8.311,975,600
2025-10-07$8.06$8.062,255,600
2025-10-06$8.70$8.703,729,200
2025-10-03$7.76$7.762,400,300
2025-10-02$7.21$7.211,363,400
2025-10-01$7.30$7.301,386,100
2025-09-30$6.96$6.961,399,100
2025-09-29$7.08$7.081,770,300
2025-09-26$7.10$7.101,159,000
2025-09-25$6.87$6.871,143,200
2025-09-24$6.98$6.98958,300
2025-09-23$7.12$7.121,837,300
2025-09-22$7.28$7.281,841,800
2025-09-19$6.84$6.842,030,900
2025-09-18$6.98$6.981,342,000
2025-09-17$6.60$6.601,541,900
2025-09-16$6.70$6.70929,300
2025-09-15$6.71$6.711,651,300
2025-09-12$6.59$6.591,343,100
2025-09-11$6.80$6.802,264,700
2025-09-10$6.27$6.272,241,200
2025-09-09$6.66$6.661,594,000
2025-09-08$6.76$6.761,908,200
2025-09-05$6.61$6.611,845,500
2025-09-04$6.35$6.351,203,600
2025-09-03$6.67$6.67973,200
2025-09-02$6.66$6.661,404,800
2025-08-29$6.84$6.841,079,300
2025-08-28$6.96$6.961,338,800
2025-08-27$7.02$7.021,086,700
2025-08-26$7.12$7.121,281,200
2025-08-25$6.93$6.93908,800
2025-08-22$7.01$7.011,652,900
2025-08-21$6.64$6.641,224,300
2025-08-20$6.68$6.681,514,100
2025-08-19$6.84$6.841,897,800
2025-08-18$7.11$7.111,280,200
2025-08-15$7.25$7.252,066,300
2025-08-14$7.06$7.061,684,600
2025-08-13$7.47$7.472,482,800
2025-08-12$7.42$7.422,303,700
2025-08-11$6.95$6.954,793,500
2025-08-08$7.55$7.553,919,100
2025-08-07$7.57$7.577,998,500
2025-08-06$8.24$8.246,136,500
2025-08-05$8.26$8.262,379,000
2025-08-04$7.88$7.881,529,500
2025-08-01$7.60$7.602,398,400
2025-07-31$7.66$7.662,131,100
2025-07-30$7.90$7.903,523,500
2025-07-29$7.80$7.803,612,900
2025-07-28$7.73$7.731,473,800
2025-07-25$7.77$7.771,537,800
2025-07-24$7.78$7.782,199,800
2025-07-23$8.15$8.153,848,400
2025-07-22$7.77$7.772,758,200
2025-07-21$7.39$7.392,724,800
2025-07-18$7.23$7.232,612,000
2025-07-17$6.66$6.661,094,400
2025-07-16$6.34$6.341,224,700
2025-07-15$6.49$6.491,174,700
2025-07-14$6.57$6.571,393,700
2025-07-11$6.83$6.831,330,500
2025-07-10$7.00$7.001,258,000
2025-07-09$6.85$6.852,548,500
2025-07-08$7.04$7.043,143,200
2025-07-07$6.34$6.341,456,400
2025-07-03$6.46$6.46673,500
2025-07-02$6.34$6.341,298,600
2025-07-01$6.14$6.141,734,100
2025-06-30$5.92$5.921,628,100
2025-06-27$5.88$5.882,760,900
2025-06-26$6.15$6.151,846,900
2025-06-25$5.73$5.731,516,800
2025-06-24$6.07$6.071,084,300
2025-06-23$5.82$5.821,200,500
2025-06-20$5.79$5.792,208,700
2025-06-18$5.92$5.92924,900
2025-06-17$5.94$5.94932,800
2025-06-16$6.29$6.291,228,700
2025-06-13$6.16$6.16944,400
2025-06-12$6.42$6.42971,000
2025-06-11$6.50$6.501,357,600
2025-06-10$6.38$6.381,363,400
2025-06-09$6.17$6.171,311,700
2025-06-06$6.02$6.021,263,900
2025-06-05$5.79$5.791,242,100
2025-06-04$5.91$5.911,249,400
2025-06-03$5.84$5.841,557,000
2025-06-02$5.69$5.691,544,800
2025-05-30$5.76$5.761,529,100
2025-05-29$5.96$5.962,347,700
2025-05-28$6.42$6.421,467,800
2025-05-27$6.68$6.682,888,900
2025-05-23$6.39$6.393,828,500
2025-05-22$6.42$6.421,885,300
2025-05-21$6.09$6.092,605,400
2025-05-20$6.35$6.352,023,700
2025-05-19$6.22$6.222,566,300
2025-05-16$6.34$6.342,891,400
2025-05-15$5.69$5.691,762,700
2025-05-14$5.73$5.732,125,900
2025-05-13$5.94$5.944,126,800
2025-05-12$5.26$5.263,079,000
2025-05-09$4.95$4.953,837,000
2025-05-08$4.31$4.3110,004,200
2025-05-07$5.69$5.692,344,800
2025-05-06$5.50$5.501,536,300
2025-05-05$5.49$5.491,354,000
2025-05-02$5.83$5.831,471,300
2025-05-01$5.55$5.551,201,000
2025-04-30$5.40$5.401,305,200
2025-04-29$5.40$5.401,151,800
2025-04-28$5.57$5.57983,100
2025-04-25$5.55$5.55837,200
2025-04-24$5.46$5.461,572,700
2025-04-23$5.23$5.231,652,200
2025-04-22$5.16$5.161,147,900
2025-04-21$5.07$5.071,238,200
2025-04-17$5.21$5.211,174,700
2025-04-16$5.17$5.171,608,900
2025-04-15$5.18$5.181,621,100
2025-04-14$5.31$5.311,333,600
2025-04-11$5.16$5.161,694,500
2025-04-10$5.10$5.101,864,600
2025-04-09$5.51$5.513,728,000
2025-04-08$5.02$5.022,168,500
2025-04-07$5.34$5.342,705,600
2025-04-04$5.47$5.472,905,300
2025-04-03$5.62$5.622,393,900
2025-04-02$6.42$6.42999,400
2025-04-01$6.35$6.351,122,600
2025-03-31$6.39$6.391,900,600
2025-03-28$6.58$6.581,946,200
2025-03-27$6.95$6.951,082,800
2025-03-26$7.04$7.041,031,100
2025-03-25$7.15$7.151,780,300
2025-03-24$7.07$7.071,316,000
2025-03-21$7.04$7.041,498,900
2025-03-20$6.93$6.931,437,700
2025-03-19$7.35$7.351,230,300
2025-03-18$7.04$7.041,155,800
2025-03-17$7.35$7.351,049,800
2025-03-14$7.38$7.381,179,500
2025-03-13$6.93$6.931,271,300
2025-03-12$7.37$7.371,527,600
2025-03-11$7.43$7.431,185,800
2025-03-10$7.69$7.692,153,300
2025-03-07$7.95$7.951,776,400
2025-03-06$7.80$7.801,528,900
2025-03-05$7.84$7.841,480,800
2025-03-04$7.30$7.302,072,500
2025-03-03$7.17$7.172,131,300
2025-02-28$7.61$7.612,057,300
2025-02-27$7.55$7.552,662,000
2025-02-26$7.38$7.381,821,400
2025-02-25$7.46$7.462,445,000
2025-02-24$7.77$7.772,150,100
2025-02-21$8.04$8.042,209,900
2025-02-20$8.15$8.152,371,000
2025-02-19$8.30$8.301,800,400
2025-02-18$8.54$8.542,799,800
2025-02-14$8.63$8.635,249,200
2025-02-13$9.00$9.0012,444,200
2025-02-12$11.75$11.754,936,700
2025-02-11$12.14$12.142,477,400
2025-02-10$12.00$12.001,786,400
2025-02-07$11.47$11.471,068,600
2025-02-06$11.63$11.631,289,400
2025-02-05$11.28$11.281,356,300
2025-02-04$11.61$11.611,176,200
2025-02-03$11.57$11.571,367,300
2025-01-31$11.69$11.691,164,200
2025-01-30$11.75$11.751,061,300
2025-01-29$11.56$11.561,251,800
2025-01-28$11.39$11.392,318,200
2025-01-27$10.98$10.981,714,800
2025-01-24$11.53$11.531,502,500
2025-01-23$11.66$11.661,699,900
2025-01-22$11.33$11.331,761,400
2025-01-21$11.65$11.652,179,700
2025-01-17$12.72$12.721,371,900
2025-01-16$12.56$12.561,326,700
2025-01-15$12.72$12.721,150,800
2025-01-14$12.47$12.471,184,800
2025-01-13$12.73$12.731,624,300
2025-01-10$12.54$12.541,313,700
2025-01-08$13.16$13.161,385,700
2025-01-07$13.30$13.301,491,600
2025-01-06$13.90$13.902,397,100
2025-01-03$13.02$13.021,581,200
2025-01-02$12.17$12.171,260,400