RODRIGUEZ RICARDO C.

SEC source: 0001920996-26-000002 · wk-form4_1772837217.xml · nonDerivative · entry 1

RODRIGUEZ RICARDO C. · CIK 0001920996 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 350,000

F1 · shares: The securities are represented by restricted stock units. Each restricted stock unit represents the reporting person's right to receive one share of the issuer's common stock. 1/16th of shares subject to award will vest on May 20, 2026 and quarterly thereafter on each August 20, November 20, February 20 and May 20, subject to the reporting person's continued service on each such date, until the award is fully vested on February 20, 2030.

F2 · balance_after: Includes 350,000 restricted stock units, each of which represents a contingent right to receive one share of the issuer's common stock, subject to the applicable vesting schedule and conditions of each restricted stock unit.

SEC source: 0001920996-26-000004 · wk-form4a_1773439767.xml · nonDerivative · entry 1

RODRIGUEZ RICARDO C. · CIK 0001920996 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 350,000

F1 · shares: This Form 4/A is filed solely to correct the vesting schedule of the restricted stock units of the reporting person reported in the original filing. 3/16th of shares subject to award will vest on November 20, 2026 and quarterly thereafter on each February 20, May 20, August 20 and November 20, subject to the reporting person's continued service on each such date, until the award is fully vested on February 20, 2030.

SEC source: 0001920996-25-000010 · wk-form4_1759958161.xml · nonDerivative · entry 1

RODRIGUEZ RICARDO C. · CIK 0001920996 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 200,000

F1 · shares: The securities are represented by restricted stock units granted on October 6, 2025. Each restricted stock unit represents the reporting person's right to receive one share of the issuer's common stock. 1/4th of the restricted stock units subject to the award will vest on November 20, 2026 and the remainder will vest quarterly over three years thereafter, on each February 20, May 20, August 20 and November 20, subject to the reporting person's continued service on each such date, until the award is fully vested on November 20, 2029.

SEC source: 0000950170-25-037446 · ownership.xml · nonDerivative · entry 1

RODRIGUEZ RICARDO C. · CIK 0001920996 · CFO & Treasurer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 57,311

F1 · shares: Shares withheld by Registrant to satisfy the minimum statutory tax withholding requirements on vesting of Restricted Stock Units ("RSUs").

F2 · balance_after: Represents 6,591 shares of Common Stock and 50,720 RSUs.

SEC source: 0000950170-25-035607 · ownership.xml · derivative · entry 4

RODRIGUEZ RICARDO C. · CIK 0001920996 · CFO & Treasurer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 79,719

Underlying: Common Stock · 79,719 shares

Expires not disclosed

F5 · derivative.exercise_price: Each performance share unit ("PSU") represents a contingent right to receive one share of Common Stock upon vesting. The PSUs vest on March 5, 2028, following the completion of the performance period, which begins on January 1, 2025 and ends on December 31, 2027. Ranging between 0-200% of the target number of PSUs (as reflected in Table II above), the PSUs vest based on the total shareholder return of Common Stock relative to the total stockholder return of the components of the Russell 2000 Index.

F5 · derivative.exercise_date: Each performance share unit ("PSU") represents a contingent right to receive one share of Common Stock upon vesting. The PSUs vest on March 5, 2028, following the completion of the performance period, which begins on January 1, 2025 and ends on December 31, 2027. Ranging between 0-200% of the target number of PSUs (as reflected in Table II above), the PSUs vest based on the total shareholder return of Common Stock relative to the total stockholder return of the components of the Russell 2000 Index.

F5 · derivative.expiration_date: Each performance share unit ("PSU") represents a contingent right to receive one share of Common Stock upon vesting. The PSUs vest on March 5, 2028, following the completion of the performance period, which begins on January 1, 2025 and ends on December 31, 2027. Ranging between 0-200% of the target number of PSUs (as reflected in Table II above), the PSUs vest based on the total shareholder return of Common Stock relative to the total stockholder return of the components of the Russell 2000 Index.

SEC source: 0000950170-25-035607 · ownership.xml · derivative · entry 3

RODRIGUEZ RICARDO C. · CIK 0001920996 · CFO & Treasurer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 56,189

Underlying: Common Stock · 56,189 shares

Expires 2035-03-05

F4 · derivative.exercise_date: The options vest as to one-third of the shares on March 5, 2026, an additional one-third of the shares on March 5, 2027 and the remaining one-third of the shares on March 5, 2028.

SEC source: 0000950170-25-035607 · ownership.xml · nonDerivative · entry 2

RODRIGUEZ RICARDO C. · CIK 0001920996 · CFO & Treasurer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 59,235

F2 · shares: Each Restricted Stock Unit ("RSU") represents the right to receive one share of Common Stock upon vesting. The RSUs vest as to one-third of the shares on March 5, 2026, an additional one-third of the shares on March 5, 2027 and the remaining one-third of the shares on March 5, 2028.

F3 · balance_after: Represents 3,008 shares of Common Stock and 56,227 RSUs.

SEC source: 0000950170-25-035607 · ownership.xml · nonDerivative · entry 1

RODRIGUEZ RICARDO C. · CIK 0001920996 · CFO & Treasurer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 19,376

F1 · shares: Shares withheld by Registrant to satisfy the minimum statutory tax withholding requirements on vesting of Restricted Stock Units ("RSUs").

SEC source: 0000950170-25-027877 · ownership.xml · nonDerivative · entry 1

RODRIGUEZ RICARDO C. · CIK 0001920996 · CFO & Treasurer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 20,312

F1 · shares: Shares withheld by Registrant to satisfy the minimum statutory tax withholding requirements on vesting of Restricted Stock Units ("RSUs").

F2 · balance_after: Represents 1,267 shares of Common Stock and 19,045 RSUs.

SEC source: 0000950170-25-027209 · ownership.xml · nonDerivative · entry 1

RODRIGUEZ RICARDO C. · CIK 0001920996 · CFO & Treasurer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 20,485

F1 · shares: Shares withheld by Registrant to satisfy the minimum statutory tax withholding requirements on vesting of Restricted Stock Units ("RSUs").

F2 · balance_after: Represents 946 shares of Common Stock and 19,539 RSUs.

SEC source: 0000950170-24-101328 · ownership.xml · derivative · entry 6

RODRIGUEZ RICARDO C. · CIK 0001920996 · CFO & Treasurer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 50,679

Underlying: Common Stock · 25,300 shares

Expires 2033-06-01

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: The transactions reported on this Form 4 were effected pursuant to a Rule 10b5-1 Trading Plan previously adopted by the reporting person on May 16, 2024.

F6 · derivative.exercise_date: The options are currently vested with respect to 25,326 shares. The remaining options vest in two installments as follows: 25,327 shares on March 8, 2025 and 25,326 shares on March 8, 2026.

SEC source: 0000950170-24-101328 · ownership.xml · nonDerivative · entry 5

RODRIGUEZ RICARDO C. · CIK 0001920996 · CFO & Treasurer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 20,790

F1 · kind: The transactions reported on this Form 4 were effected pursuant to a Rule 10b5-1 Trading Plan previously adopted by the reporting person on May 16, 2024.

F5 · balance_after: Represents 20,790 Restricted Stock Units.

SEC source: 0000950170-24-101328 · ownership.xml · nonDerivative · entry 4

RODRIGUEZ RICARDO C. · CIK 0001920996 · CFO & Treasurer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 20,890

F1 · kind: The transactions reported on this Form 4 were effected pursuant to a Rule 10b5-1 Trading Plan previously adopted by the reporting person on May 16, 2024.

F4 · price: These transactions were executed in multiple trades at prices ranging from $29.68 to $30.59. The reporting person will provide to the staff of the Securities and Exchange Commission, the issuer, or any security holder of the issuer, upon request, full information regarding the number of shares sold at each separate price.

SEC source: 0000950170-24-101328 · ownership.xml · nonDerivative · entry 3

RODRIGUEZ RICARDO C. · CIK 0001920996 · CFO & Treasurer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 27,955

F1 · kind: The transactions reported on this Form 4 were effected pursuant to a Rule 10b5-1 Trading Plan previously adopted by the reporting person on May 16, 2024.

F3 · price: These transactions were executed in multiple trades at prices ranging from $30.55 to $30.71. The reporting person will provide to the staff of the Securities and Exchange Commission, the issuer, or any security holder of the issuer, upon request, full information regarding the number of shares sold at each separate price.

SEC source: 0000950170-24-101328 · ownership.xml · nonDerivative · entry 2

RODRIGUEZ RICARDO C. · CIK 0001920996 · CFO & Treasurer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 29,057

F1 · kind: The transactions reported on this Form 4 were effected pursuant to a Rule 10b5-1 Trading Plan previously adopted by the reporting person on May 16, 2024.

F2 · price: These transactions were executed in multiple trades at prices ranging from $29.55 to $30.50. The reporting person will provide to the staff of the Securities and Exchange Commission, the issuer, or any security holder of the issuer, upon request, full information regarding the number of shares sold at each separate price.

SEC source: 0000950170-24-101328 · ownership.xml · nonDerivative · entry 1

RODRIGUEZ RICARDO C. · CIK 0001920996 · CFO & Treasurer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 53,255

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: The transactions reported on this Form 4 were effected pursuant to a Rule 10b5-1 Trading Plan previously adopted by the reporting person on May 16, 2024.

SEC source: 0000950170-24-029208 · ownership.xml · nonDerivative · entry 1

RODRIGUEZ RICARDO C. · CIK 0001920996 · CFO & Treasurer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 27,955

F1 · shares: Shares withheld by Registrant to satisfy the minimum statutory tax withholding requirements on vesting of Restricted Stock Units ("RSUs").

F2 · balance_after: Represents 7,165 shares of Common Stock and 20,790 RSUs.

SEC source: 0000950170-24-028168 · ownership.xml · derivative · entry 2

RODRIGUEZ RICARDO C. · CIK 0001920996 · CFO & Treasurer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 35,249

Underlying: Common Stock · 35,249 shares

Expires 2034-03-05

F3 · derivative.exercise_date: The options vest as to one-third of the shares on March 5, 2025, an additional one-third of the shares on March 5, 2026 and the remaining one-third of the shares on March 5, 2027.

SEC source: 0000950170-24-028168 · ownership.xml · nonDerivative · entry 1

RODRIGUEZ RICARDO C. · CIK 0001920996 · CFO & Treasurer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 29,779

F1 · shares: Each Restricted Stock Unit ("RSU") represents the right to receive one share of Common Stock upon vesting. The RSUs vest as to one-third of the shares on March 5, 2025, an additional one-third of the shares on March 5, 2026 and the remaining one-third of the shares on March 5, 2027.

F2 · balance_after: Represents 3,483 shares of Common Stock and 26,296 RSUs.

SEC source: 0000950170-24-028020 · ownership.xml · nonDerivative · entry 1

RODRIGUEZ RICARDO C. · CIK 0001920996 · CFO & Treasurer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 21,747

F1 · shares: Represents unearned performance-based restricted shares granted on June 2, 2022 that were cancelled on March 5, 2024.

F2 · balance_after: Represents 3,483 shares of Common Stock and18,264 RSUs.

SEC source: 0000950170-24-020883 · ownership.xml · nonDerivative · entry 2

RODRIGUEZ RICARDO C. · CIK 0001920996 · CFO & Treasurer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 75,337

F1 · shares: Shares withheld by Registrant to satisfy the minimum statutory tax withholding requirements on vesting of Restricted Stock Units ("RSUs").

F2 · balance_after: Represents 3,483 shares of Common Stock, 18,264 RSUs and 53,590 shares of Restricted Stock.

SEC source: 0000950170-24-020883 · ownership.xml · nonDerivative · entry 1

RODRIGUEZ RICARDO C. · CIK 0001920996 · CFO & Treasurer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 75,509

F1 · shares: Shares withheld by Registrant to satisfy the minimum statutory tax withholding requirements on vesting of Restricted Stock Units ("RSUs").

SEC source: 0000950170-23-064425 · ownership.xml · nonDerivative · entry 1

RODRIGUEZ RICARDO C. · CIK 0001920996 · CFO & Treasurer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 75,811

F1 · shares: Shares withheld by Registrant to satisfy the minimum statutory tax withholding requirements on vesting of Restricted Stock Units ("RSUs").

F2 · balance_after: Represents 2,592 shares of Common Stock, 19,629 RSUs and 53,590 shares of Restricted Stock.

SEC source: 0001209191-23-048827 · doc4.xml · derivative · entry 1

RODRIGUEZ RICARDO C. · CIK 0001920996 · SVP, CFO & Treasurer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 85,000

Underlying: Common Stock · 85,000 shares

Expires 2033-09-07

F1 · derivative.exercise_date: The options will vest in full on September 7, 2026, subject to continuous service through such date.

SEC source: 0001209191-23-033659 · doc4.xml · derivative · entry 2

RODRIGUEZ RICARDO C. · CIK 0001920996 · SVP, CFO & Treasurer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 75,979

Underlying: Common Stock · 75,979 shares

Expires 2033-06-01

F3 · derivative.exercise_date: The options vest as to one-third of the shares on March 8, 2024, an additional one-third of the shares on March 8, 2025 and the remaining one-third of the shares on March 8, 2026.

SEC source: 0001209191-23-033659 · doc4.xml · nonDerivative · entry 1

RODRIGUEZ RICARDO C. · CIK 0001920996 · SVP, CFO & Treasurer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 75,922

F1 · shares: Each Restricted Stock Unit ("RSU") represents the right to receive one share of Common Stock upon vesting. The RSUs vest as to one-third of the shares on March 8, 2024, an additional one-third of the shares on March 8, 2025 and the remaining one-third of the shares on March 8, 2026.

F2 · balance_after: Represents 2,325 shares of Common Stock, 20,007 RSUs and 53,590 shares of Restricted Stock.

SEC source: 0001209191-23-013771 · doc4.xml · nonDerivative · entry 1

RODRIGUEZ RICARDO C. · CIK 0001920996 · SVP, CFO & Treasurer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 59,403

F1 · shares: Shares withheld by Registrant to satisfy the minimum statutory tax withholding requirements on vesting of Restricted Stock Units ("RSUs").

F2 · balance_after: Represents 2,325 shares of Common Stock, 3,488 RSUs and 53,590 shares of Restricted Stock.

SEC source: 0001209191-23-013359 · doc4.xml · nonDerivative · entry 1

RODRIGUEZ RICARDO C. · CIK 0001920996 · SVP, CFO & Treasurer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 59,575

F1 · shares: Shares withheld by Registrant to satisfy the minimum statutory tax withholding requirements on vesting of Restricted Stock Units ("RSUs").

F2 · balance_after: Represents 2,003 shares of Common Stock, 3,982 RSUs and 53,590 shares of Restricted Stock.

SEC source: 0001209191-22-057600 · doc4.xml · nonDerivative · entry 1

RODRIGUEZ RICARDO C. · CIK 0001920996 · SVP, CFO & Treasurer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 59,878

F1 · shares: Shares withheld by Registrant to satisfy minimum statutory tax withholding requirements on vesting of Restricted Stock Units ("RSUs").

F2 · balance_after: Represents 1,434 shares of common stock, 4,854 RSUs and 53,590 Restricted Stock.

SEC source: 0001209191-22-034712 · doc4.xml · nonDerivative · entry 1

RODRIGUEZ RICARDO C. · CIK 0001920996 · SVP, CFO & Treasurer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 60,476

F1 · shares: The reporting person was granted restricted shares of common stock (the "Award") pursuant to a Performance-Based Restricted Stock Agreement by and between Aspen Aerogels, Inc. and the reporting person subject to the 2014 Employee, Director and Consultant Equity Incentive Plan. In order for a tranche of this Award to vest, both time and performance vesting conditions must be satisfied. For the time vesting condition, a tranche will vest at the later of (i) three years from the grant date or (ii) one year from the date when an applicable performance hurdle is achieved, subject to a maximum five-year vesting period for shares with respect to which the performance hurdle has been achieved. With respect to the performance vesting condition, there are three tranches with different share price hurdles and a five-year total performance period. If a share price hurdle is not met after five years, the applicable tranche is forfeited.

F2 · shares: (cont.) The share price hurdle is met by reference to a 30-day volume weighted average price (VWAP) that is maintained for 60 days (the "Share Price Hurdle"). The first tranche consists of 34% of the restricted shares of common stock granted under the Award, with the Share Price Hurdle equal to $43.33.The second tranche consists of 33% of the restricted shares of common stock granted under the Award, with the Share Price Hurdle equal to $64.99. The third tranche consists of 33% of the restricted shares of common stock granted under the Award, with the Share Price Hurdle equal to $86.65.

F1 · price: The reporting person was granted restricted shares of common stock (the "Award") pursuant to a Performance-Based Restricted Stock Agreement by and between Aspen Aerogels, Inc. and the reporting person subject to the 2014 Employee, Director and Consultant Equity Incentive Plan. In order for a tranche of this Award to vest, both time and performance vesting conditions must be satisfied. For the time vesting condition, a tranche will vest at the later of (i) three years from the grant date or (ii) one year from the date when an applicable performance hurdle is achieved, subject to a maximum five-year vesting period for shares with respect to which the performance hurdle has been achieved. With respect to the performance vesting condition, there are three tranches with different share price hurdles and a five-year total performance period. If a share price hurdle is not met after five years, the applicable tranche is forfeited.

F2 · price: (cont.) The share price hurdle is met by reference to a 30-day volume weighted average price (VWAP) that is maintained for 60 days (the "Share Price Hurdle"). The first tranche consists of 34% of the restricted shares of common stock granted under the Award, with the Share Price Hurdle equal to $43.33.The second tranche consists of 33% of the restricted shares of common stock granted under the Award, with the Share Price Hurdle equal to $64.99. The third tranche consists of 33% of the restricted shares of common stock granted under the Award, with the Share Price Hurdle equal to $86.65.

F3 · balance_after: Represents 6,886 Restricted Stock Units and 53,590 shares of Restricted Stock.