ASPEN AEROGELS INC

Ticker: ASPN CUSIP: 04523Y105 Class: Common Stock

CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM's Holding History (CIK: 0001081019)

Note: Option positions (PUT/CALL) are excluded.

Q4 2025
Shares 78,454 Value ($000) $222 Avg Close $5.16 Range $2.79 - $9.35
Q3 2025
Shares 60,670 Value ($000) $422 Avg Close $7.05 Range $5.75 - $9.78
Q2 2025
Shares 56,519 Value ($000) $335 Avg Close $5.75 Range $4.16 - $6.92
Q1 2025
Shares 61,045 Value ($000) $390 Avg Close $9.64 Range $6.23 - $14.30
Q4 2024
Shares 61,045 Value ($000) $725 Avg Close $17.05 Range $11.59 - $27.25
Q3 2024
Shares 60,781 Value ($000) $1,683 Avg Close $25.02 Range $16.78 - $33.15
Q2 2024
Shares 59,626 Value ($000) $1,422 Avg Close $23.47 Range $14.52 - $31.74
Q1 2024
Shares 60,039 Value ($000) $1,057 Avg Close $14.74 Range $10.75 - $19.10
Q4 2023
Shares 55,305 Value ($000) $873 Avg Close $10.33 Range $6.62 - $17.32
Q3 2023
Shares 57,706 Value ($000) $496 Avg Close $7.10 Range $5.33 - $8.90
Q2 2023
Shares 72,472 Value ($000) $572 Avg Close $6.96 Range $5.41 - $8.70
Q1 2023
Shares 71,007 Value ($000) $529 Avg Close $9.94 Range $6.37 - $13.50
Q4 2022
Shares 63,829 Value ($000) $753 Avg Close $11.43 Range $8.90 - $14.44
Q3 2022
Shares 40,080 Value ($000) $370 Avg Close $12.11 Range $9.20 - $15.11
Q2 2022
Shares 37,155 Value ($000) $367 Avg Close $20.18 Range $7.93 - $35.54
Q1 2022
Shares 31,882 Value ($000) $1,099 Avg Close $32.45 Range $25.00 - $52.00
Q4 2021
Shares 34,318 Value ($000) $1,709 Avg Close $52.70 Range $43.28 - $65.99
Q3 2021
Shares 11,954 Value ($000) $550 Avg Close $39.64 Range $30.43 - $47.29
Q2 2021
Shares 29,772 Value ($000) $891 Avg Close $20.41 Range $16.33 - $31.00
Q1 2021
Shares 31,148 Value ($000) $634 Avg Close $21.09 Range $15.21 - $26.98
Q4 2020
Shares 30,828 Value ($000) $515 Avg Close $13.15 Range $10.17 - $18.22
Q3 2020
Shares 30,828 Value ($000) $338 Avg Close $7.91 Range $5.78 - $11.28
Q2 2020
Shares 30,828 Value ($000) $203 Avg Close $6.42 Range $5.19 - $8.65
Q1 2015
Shares 10,444 Value ($000) $76 Avg Close $7.57 Range $6.50 - $8.58
Q4 2014
Shares 10,444 Value ($000) $83 Avg Close $8.49 Range $6.46 - $10.50
Q3 2014
Shares 10,400 Value ($000) $105 Avg Close $10.13 Range $8.04 - $11.56