NYSE:ASPN | Stock Price History | 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.

Historical Stock Price

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2026-09-04$4.8520,490
2026-09-03$4.9128,115
2026-09-02$4.8232,321
2026-09-01$4.8554,499
2026-08-31$5.0055,804
2026-08-28$5.2559,255
2026-08-27$5.23$5.23671,700$5.3351,995
2026-08-26$5.19$5.19535,000$5.2132,603
2026-08-25$5.23$5.23846,300$5.1053,653
2026-08-24$5.01$5.01740,800$4.9847,742
2026-08-21$5.18$5.18713,600$5.2024,192
2026-08-20$5.11$5.11900,600$5.4236,102
2026-08-19$5.45$5.45735,400$5.6244,019
2026-08-18$5.58$5.58857,800$5.6748,395
2026-08-17$5.82$5.82818,200$5.7348,321
2026-08-14$5.85$5.851,018,800$5.9962,994
2026-08-13$6.07$6.07967,200$6.0852,999
2026-08-12$6.15$6.151,044,600$6.3464,381
2026-08-11$6.14$6.14991,600$6.4167,892
2026-08-10$6.29$6.291,222,200$6.3477,611
2026-08-07$6.25$6.252,299,400$7.04123,257
2026-08-06$6.89$6.8914,401,100$7.38557,633
2026-08-05$5.01$5.011,248,000$5.0760,146
2026-08-04$5.06$5.061,042,700$4.9553,042
2026-08-03$4.73$4.73898,300$4.5943,176
2026-07-31$4.63$4.63991,500$4.6342,261
2026-07-30$4.51$4.511,303,300$4.3256,603
2026-07-29$4.09$4.091,177,200$4.4357,865
2026-07-28$4.39$4.39901,700$4.6448,945
2026-07-27$4.65$4.651,252,600$4.7673,317
2026-07-24$4.67$4.671,195,300$5.1382,921
2026-07-23$5.16$5.16829,000$5.2830,359
2026-07-22$5.31$5.31893,800$5.4031,406
2026-07-21$5.43$5.43890,000$5.0945,168
2026-07-20$5.03$5.03720,400$5.1147,413
2026-07-17$5.13$5.13885,900
2026-07-16$5.05$5.05813,000
2026-07-15$5.30$5.30685,400
2026-07-14$5.27$5.27640,300
2026-07-13$5.18$5.18914,000
2026-07-10$5.16$5.16717,700
2026-07-09$5.24$5.24679,500
2026-07-08$5.19$5.19949,300
2026-07-07$5.14$5.141,362,600
2026-07-06$5.47$5.471,132,700
2026-07-02$5.58$5.581,513,200
2026-07-01$5.93$5.931,187,300
2026-06-30$6.34$6.342,063,000
2026-06-29$5.98$5.981,972,800
2026-06-26$5.63$5.633,371,400
2026-06-25$5.68$5.681,206,500
2026-06-24$5.73$5.731,263,100
2026-06-23$5.90$5.901,631,300
2026-06-22$6.37$6.371,797,900
2026-06-18$6.32$6.322,201,500
2026-06-17$6.05$6.051,559,300
2026-06-16$5.82$5.821,808,600
2026-06-15$6.04$6.041,225,700
2026-06-12$5.92$5.92941,400
2026-06-11$5.72$5.721,373,100
2026-06-10$5.44$5.44882,500
2026-06-09$5.52$5.521,663,900
2026-06-08$5.64$5.64943,200
2026-06-05$5.64$5.641,267,500
2026-06-04$6.23$6.231,250,400
2026-06-03$5.90$5.901,348,800
2026-06-02$6.22$6.221,373,700
2026-06-01$6.22$6.221,252,700
2026-05-29$6.40$6.401,606,300
2026-05-28$6.37$6.372,076,300
2026-05-27$6.36$6.362,272,900
2026-05-26$5.97$5.971,269,300
2026-05-22$5.79$5.791,306,100
2026-05-21$5.47$5.471,615,500
2026-05-20$5.10$5.101,088,800
2026-05-19$5.06$5.061,295,400
2026-05-18$5.33$5.331,270,800
2026-05-15$5.60$5.602,023,100
2026-05-14$5.82$5.822,993,200
2026-05-13$5.40$5.402,721,300
2026-05-12$5.06$5.062,543,500
2026-05-11$5.12$5.122,196,000
2026-05-08$5.04$5.042,013,100
2026-05-07$5.12$5.125,397,600
2026-05-06$4.12$4.121,844,500
2026-05-05$4.14$4.141,590,200
2026-05-04$3.88$3.881,606,800
2026-05-01$4.27$4.272,320,100
2026-04-30$3.71$3.712,153,600
2026-04-29$3.61$3.61778,100
2026-04-28$3.61$3.611,326,900
2026-04-27$3.64$3.641,465,600
2026-04-24$3.50$3.501,522,200
2026-04-23$3.36$3.362,148,800
2026-04-22$3.25$3.252,901,200
2026-04-21$3.55$3.551,073,800
2026-04-20$3.56$3.561,165,600
2026-04-17$3.48$3.481,676,900
2026-04-16$3.52$3.521,308,600
2026-04-15$3.33$3.331,482,600