IA

SEC source: 0001104659-26-113314 · tm2626914-1_4seq1.xml · nonDerivative · entry 1

DiGiovanni Jeffrey · CIK 0001752808 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 84,847

F1 · shares: These shares of common stock were withheld by the issuer to satisfy the reporting person's tax obligations in connection with the vesting of restricted stock units.

SEC source: 0001104659-26-104820 · tm2624716-2_4seq1.xml · nonDerivative · entry 1

Askarpour Shahram · CIK 0001546928 · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 493,876

F1 · shares: These shares of common stock were withheld by the issuer to satisfy the reporting person's tax obligations in connection with the vesting of restricted stock units.

SEC source: 0001104659-26-104818 · tm2624716-1_4seq1.xml · nonDerivative · entry 1

DiGiovanni Jeffrey · CIK 0001752808 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 85,758

F1 · shares: These shares of common stock were withheld by the issuer to satisfy the reporting person's tax obligations in connection with the vesting of restricted stock units.

SEC source: 0001104659-26-104747 · tm2624688-1_4seq1.xml · nonDerivative · entry 1

BRESSNER GLEN R · CIK 0000902959 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 156,155

F1 · shares: The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $19.63 to $19.66, inclusive. The reporting person undertakes to provide to Innovative Solutions & Support, Inc., any security holder of Innovative Solutions & Support, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in this footnote (1).

SEC source: 0001104659-26-083938 · tm2620592-2_4seq1.xml · derivative · entry 1

DiGiovanni Jeffrey · CIK 0001752808 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 21,793

Underlying: Common Stock · 21,793 shares

Expires 2036-07-14

F1 · derivative.exercise_price: Each Performance Stock Unit represents a contingent right to receive one share of issuer common stock. The Performance Stock Units vest in equal tranches on each of the first, second and third anniversary of the date of grant, subject to the issuer's common stock achieving specified prices per share.

F1 · derivative.exercise_date: Each Performance Stock Unit represents a contingent right to receive one share of issuer common stock. The Performance Stock Units vest in equal tranches on each of the first, second and third anniversary of the date of grant, subject to the issuer's common stock achieving specified prices per share.

SEC source: 0001104659-26-083936 · tm2620592-1_4seq1.xml · derivative · entry 1

Askarpour Shahram · CIK 0001546928 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 68,966

Underlying: Common Stock · 68,966 shares

Expires 2036-07-14

F1 · derivative.exercise_price: Each Performance Stock Unit represents a contingent right to receive one share of issuer common stock. The Performance Stock Units vest in equal tranches on each of the first, second and third anniversary of the date of grant, subject to the issuer's common stock achieving specified prices per share.

F1 · derivative.exercise_date: Each Performance Stock Unit represents a contingent right to receive one share of issuer common stock. The Performance Stock Units vest in equal tranches on each of the first, second and third anniversary of the date of grant, subject to the issuer's common stock achieving specified prices per share.

SEC source: 0001104659-26-082559 · tm2620176-1_4seq1.xml · nonDerivative · entry 1

DiGiovanni Jeffrey · CIK 0001752808 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 86,238

F1 · shares: These shares of common stock were withheld by the issuer to satisfy the reporting person's tax obligations in connection with the vesting of restricted stock units.

SEC source: 0001104659-26-080691 · tm2619829-1_4seq1.xml · nonDerivative · entry 1

DiGiovanni Jeffrey · CIK 0001752808 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 86,987

F1 · shares: These shares of common stock were withheld by the issuer to satisfy the reporting person's tax obligations in connection with the vesting of restricted stock units.

SEC source: 0001104659-26-065110 · tm2615373-1_4seq1.xml · nonDerivative · entry 1

BRESSNER GLEN R · CIK 0000902959 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 153,655

F1 · price: The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $15.88 to $15.95, inclusive. The reporting person undertakes to provide to Innovative Solutions & Support, Inc., any security holder of Innovative Solutions & Support, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in this footnote (1).

SEC source: 0001104659-26-064646 · tm2615231-1_4seq1.xml · nonDerivative · entry 1

DiGiovanni Jeffrey · CIK 0001752808 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 87,897

F1 · shares: These shares of common stock were withheld by the issuer to satisfy the reporting person's tax obligations in connection with the vesting of restricted stock units.

SEC source: 0001104659-26-064647 · tm2615231-2_4seq1.xml · nonDerivative · entry 1

Askarpour Shahram · CIK 0001546928 · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 495,035

F1 · shares: These shares of common stock were withheld by the issuer to satisfy the reporting person's tax obligations in connection with the vesting of restricted stock units.

SEC source: 0001104659-26-045403 · tm2612234-5_4seq1.xml · nonDerivative · entry 1

Dean Garry C. · CIK 0002023687 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 29,408

F1 · shares: The RSUs were granted pursuant to the Company's 2019 Stock-Based Incentive Compensation Plan. Each RSU represents the right to receive one share of Common Stock. The RSUs are scheduled to vest on the first anniversary of the grant date, subject to continued service by the reporting person.

SEC source: 0001104659-26-045565 · tm2612280-1_4seq1.xml · nonDerivative · entry 2

Devine Denise L · CIK 0001564996 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 20,622

F2 · shares: The RSUs were granted pursuant to the Company's 2019 Stock-Based Incentive Compensation Plan. Each RSU represents the right to receive one share of Common Stock. The RSUs are scheduled to vest on the first anniversary of the grant date, subject to continued service by the reporting person.

SEC source: 0001104659-26-045565 · tm2612280-1_4seq1.xml · nonDerivative · entry 1

Devine Denise L · CIK 0001564996 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 15,004

F1 · shares: Reflects forfeiture of unvested RSUs by reporting person.

SEC source: 0001104659-26-045360 · tm2612234-3_4seq1.xml · nonDerivative · entry 1

Carolin Roger Anthony · CIK 0001351909 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 83,188

F1 · shares: The RSUs were granted pursuant to the Company's 2019 Stock-Based Incentive Compensation Plan. Each RSU represents the right to receive one share of Common Stock. The RSUs are scheduled to vest on the first anniversary of the grant date, subject to continued service by the reporting person.

SEC source: 0001104659-26-045364 · tm2612234-4_4seq1.xml · nonDerivative · entry 1

Silfen Richard A · CIK 0001307077 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,508

F1 · shares: The RSUs were granted pursuant to the Company's 2019 Stock-Based Incentive Compensation Plan. Each RSU represents the right to receive one share of Common Stock. The RSUs are scheduled to vest on the first anniversary of the grant date, subject to continued service by the reporting person.

SEC source: 0001104659-26-045359 · tm2612234-2_4seq1.xml · nonDerivative · entry 1

BRESSNER GLEN R · CIK 0000902959 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 147,355

F1 · shares: The RSUs were granted pursuant to the Company's 2019 Stock-Based Incentive Compensation Plan. Each RSU represents the right to receive one share of Common Stock. The RSUs are scheduled to vest on the first anniversary of the grant date, subject to continued service by the reporting person.

SEC source: 0001104659-26-045355 · tm2612234-1_4seq1.xml · nonDerivative · entry 1

Belland Stephen L · CIK 0001938138 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 42,559

F1 · shares: The RSUs were granted pursuant to the Company's 2019 Stock-Based Incentive Compensation Plan. Each RSU represents the right to receive one share of Common Stock. The RSUs are scheduled to vest on the first anniversary of the grant date, subject to continued service by the reporting person.

SEC source: 0001104659-26-041865 · tm2611594-1_4seq1.xml · nonDerivative · entry 1

DiGiovanni Jeffrey · CIK 0001752808 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 88,371

F1 · shares: These shares of common stock were withheld by the issuer to satisfy the reporting person's tax obligations in connection with the vesting of restricted stock units.

SEC source: 0001104659-26-039183 · tm2611048-1_4seq1.xml · nonDerivative · entry 1

DiGiovanni Jeffrey · CIK 0001752808 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 89,136

F1 · shares: These shares of common stock were withheld by the issuer to satisfy the reporting person's tax obligations in connection with the vesting of restricted stock units.

SEC source: 0001104659-26-019296 · tm267205-1_4seq1.xml · nonDerivative · entry 1

Askarpour Shahram · CIK 0001546928 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 495,941

F1 · shares: These shares of common stock were withheld by the issuer to satisfy the reporting person's tax obligations in connection with the vesting of restricted stock units.

SEC source: 0001104659-26-018021 · tm266945-1_4seq1.xml · nonDerivative · entry 1

DiGiovanni Jeffrey · CIK 0001752808 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 90,033

F1 · shares: These shares of common stock were withheld by the issuer to satisfy the reporting person's tax obligations in connection with the vesting of restricted stock units.

SEC source: 0001104659-26-018022 · tm266945-2_4seq1.xml · nonDerivative · entry 1

Askarpour Shahram · CIK 0001546928 · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 498,817

F1 · shares: These shares of common stock were withheld by the issuer to satisfy the reporting person's tax obligations in connection with the vesting of restricted stock units.

SEC source: 0001104659-26-017721 · tm266877-3_4seq1.xml · nonDerivative · entry 1

Silfen Richard A · CIK 0001307077 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,890

F1 · shares: The RSUs were granted pursuant to the Company's 2019 Stock-Based Incentive Compensation Plan. Each RSU represents the right to receive one share of Common Stock. The RSUs are scheduled to vest on the first anniversary of the grant date, subject to continued service by the reporting person.

SEC source: 0001104659-26-017675 · tm266877-2_4seq1.xml · derivative · entry 3

Askarpour Shahram · CIK 0001546928 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 20,171

Underlying: Common Stock · 20,171 shares

Expires 2036-02-17

F3 · derivative.exercise_price: Each Performance Stock Unit represents a contingent right to receive one share of issuer common stock. The Performance Stock Units vest in equal tranches on each of the first, second and third anniversary of the date of grant, subject to the issuer's common stock achieving specified prices per share.

F3 · derivative.exercise_date: Each Performance Stock Unit represents a contingent right to receive one share of issuer common stock. The Performance Stock Units vest in equal tranches on each of the first, second and third anniversary of the date of grant, subject to the issuer's common stock achieving specified prices per share.

SEC source: 0001104659-26-017675 · tm266877-2_4seq1.xml · derivative · entry 2

Askarpour Shahram · CIK 0001546928 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 34,364

Underlying: Common Stock · 34,364 shares

Expires 2036-02-17

F2 · derivative.exercise_date: The non-qualified stock option was granted pursuant to the Company's 2019 Stock-Based Incentive Compensation Plan. The option is scheduled to vest in accordance with the following schedule: 1/4th on the first anniversary of the grant date and 1/12th on each quarterly anniversary of the grant date thereafter, subject to continued employment by the reporting person.

SEC source: 0001104659-26-017675 · tm266877-2_4seq1.xml · nonDerivative · entry 1

Askarpour Shahram · CIK 0001546928 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 502,442

F1 · shares: The RSUs were granted pursuant to the Company's 2019 Stock-Based Incentive Compensation Plan. Each RSU represents the right to receive one share of Common Stock, subject to adjustment as provided in the Award Agreement. The RSUs are scheduled to vest in accordance with the following schedule: 1/3rd on the first anniversary of the grant date and 1/8th on each quarterly anniversary of the grant date thereafter, subject to continued employment by the reporting person.

SEC source: 0001104659-26-017674 · tm266877-1_4seq1.xml · derivative · entry 3

DiGiovanni Jeffrey · CIK 0001752808 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,455

Underlying: Common Stock · 9,455 shares

Expires 2036-02-17

F3 · derivative.exercise_price: Each Performance Stock Unit represents a contingent right to receive one share of issuer common stock. The Performance Stock Units vest in equal tranches on each of the first, second and third anniversary of the date of grant, subject to the issuer's common stock achieving specified prices per share.

F3 · derivative.exercise_date: Each Performance Stock Unit represents a contingent right to receive one share of issuer common stock. The Performance Stock Units vest in equal tranches on each of the first, second and third anniversary of the date of grant, subject to the issuer's common stock achieving specified prices per share.

SEC source: 0001104659-26-017674 · tm266877-1_4seq1.xml · derivative · entry 2

DiGiovanni Jeffrey · CIK 0001752808 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 16,108

Underlying: Common Stock · 16,108 shares

Expires 2036-02-17

F2 · derivative.exercise_date: The non-qualified stock option was granted pursuant to the Company's 2019 Stock-Based Incentive Compensation Plan. The option is scheduled to vest in accordance with the following schedule: 1/4th on the first anniversary of the grant date and 1/12th on each quarterly anniversary of the grant date thereafter, subject to continued employment by the reporting person.

SEC source: 0001104659-26-017674 · tm266877-1_4seq1.xml · nonDerivative · entry 1

DiGiovanni Jeffrey · CIK 0001752808 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 92,205

F1 · shares: The RSUs were granted pursuant to the Company's 2019 Stock-Based Incentive Compensation Plan. Each RSU represents the right to receive one share of Common Stock, subject to adjustment as provided in the Award Agreement. The RSUs are scheduled to vest in accordance with the following schedule: 1/3rd on the first anniversary of the grant date and 1/8th on each quarterly anniversary of the grant date thereafter, subject to continued employment by the reporting person.

SEC source: 0001104659-26-053614 · tm2613242-2_4aseq1.xml · derivative · entry 3

DiGiovanni Jeffrey · CIK 0001752808 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 21,307

Underlying: Common Stock · 21,307 shares

Expires 2036-02-17

F3 · derivative.exercise_price: The Reporting Person is amending the Form 4 filed on February 19, 2026 to correct the number of performance stock units granted to the Reporting person, which were originally understated due to a clerical error.

F3 · shares: The Reporting Person is amending the Form 4 filed on February 19, 2026 to correct the number of performance stock units granted to the Reporting person, which were originally understated due to a clerical error.

F4 · derivative.exercise_date: Each Performance Stock Unit represents a contingent right to receive one share of issuer common stock. The Performance Stock Units vest upon the issuer's common stock achieving specified prices per share.

SEC source: 0001104659-26-053614 · tm2613242-2_4aseq1.xml · derivative · entry 2

DiGiovanni Jeffrey · CIK 0001752808 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 16,108

Underlying: Commer Stock · 16,108 shares

Expires 2036-02-17

F2 · derivative.exercise_date: The non-qualified stock option was granted pursuant to the Company's 2019 Stock-Based Incentive Compensation Plan. The option is scheduled to vest in accordance with the following schedule: 1/4th on the first anniversary of the grant date and 1/12th on each quarterly anniversary of the grant date thereafter, subject to continued employment by the reporting person.

SEC source: 0001104659-26-053614 · tm2613242-2_4aseq1.xml · nonDerivative · entry 1

DiGiovanni Jeffrey · CIK 0001752808 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 92,205

F1 · shares: The RSUs were granted pursuant to the Company's 2019 Stock-Based Incentive Compensation Plan. Each RSU represents the right to receive one share of Common Stock, subject to adjustment as provided in the Award Agreement. The RSUs are scheduled to vest in accordance with the following schedule: 1/4th on the first anniversary of the grant date and 1/12th on each quarterly anniversary of the grant date thereafter, subject to continued employment by the reporting person.

SEC source: 0001104659-26-053609 · tm2613242-1_4aseq1.xml · derivative · entry 3

Askarpour Shahram · CIK 0001546928 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 45,455

Underlying: Common Stock · 45,455 shares

Expires 2036-02-17

F3 · derivative.exercise_price: The Reporting Person is amending the Form 4 filed on February 19, 2026 to correct the number of performance stock units granted to the Reporting person, which were originally understated due to a clerical error.

F3 · shares: The Reporting Person is amending the Form 4 filed on February 19, 2026 to correct the number of performance stock units granted to the Reporting person, which were originally understated due to a clerical error.

F4 · derivative.exercise_date: Each Performance Stock Unit represents a contingent right to receive one share of issuer common stock. The Performance Stock Units vest upon the issuer's common stock achieving specified prices per share.

SEC source: 0001104659-26-053609 · tm2613242-1_4aseq1.xml · derivative · entry 2

Askarpour Shahram · CIK 0001546928 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 34,364

Underlying: Common Stock · 34,364 shares

Expires 2036-02-17

F2 · derivative.exercise_date: The non-qualified stock option was granted pursuant to the Company's 2019 Stock-Based Incentive Compensation Plan. The option is scheduled to vest in accordance with the following schedule: 1/4th on the first anniversary of the grant date and 1/12th on each quarterly anniversary of the grant date thereafter, subject to continued employment by the reporting person.

SEC source: 0001104659-26-053609 · tm2613242-1_4aseq1.xml · nonDerivative · entry 1

Askarpour Shahram · CIK 0001546928 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 502,442

F1 · shares: The RSUs were granted pursuant to the Company's 2019 Stock-Based Incentive Compensation Plan. Each RSU represents the right to receive one share of Common Stock, subject to adjustment as provided in the Award Agreement. The RSUs are scheduled to vest in accordance with the following schedule: 1/4th on the first anniversary of the grant date and 1/12th on each quarterly anniversary of the grant date thereafter, subject to continued employment by the reporting person.

SEC source: 0001104659-26-003458 · tm263126-1_4seq1.xml · nonDerivative · entry 1

DiGiovanni Jeffrey · CIK 0001752808 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 82,750

F1 · shares: These shares of common stock were withheld by the issuer to satisfy the reporting person's tax obligations in connection with the vesting of restricted stock units.

SEC source: 0001104659-26-003460 · tm263126-2_4seq1.xml · nonDerivative · entry 1

Askarpour Shahram · CIK 0001546928 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 482,271

F1 · shares: These shares of common stock were withheld by the issuer to satisfy the reporting person's tax obligations in connection with the vesting of restricted stock units.

SEC source: 0001104659-26-000679 · tm261924-1_4seq1.xml · nonDerivative · entry 1

DiGiovanni Jeffrey · CIK 0001752808 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 83,618

F1 · shares: These shares of common stock were withheld by the issuer to satisfy the reporting person's tax obligations in connection with the vesting of restricted stock units.

SEC source: 0001104659-25-115526 · tm2532097-1_4seq1.xml · derivative · entry 2

Askarpour Shahram · CIK 0001546928 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 201,000 shares

Expires not disclosed

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 · derivative.exercise_price: Performance stock units convert into common stock on a one-for-one basis.

F2 · derivative.exercise_date: On November 20, 2024, the reporting person was granted 201,000 Performance Stock Units, which vest, subject to the terms of the Innovative Solutions and Support, Inc. 2019 Stock-Based Incentive Compensation Plan, in three equal tranches upon the issuer's common stock achieving specified prices per share.

F2 · derivative.expiration_date: On November 20, 2024, the reporting person was granted 201,000 Performance Stock Units, which vest, subject to the terms of the Innovative Solutions and Support, Inc. 2019 Stock-Based Incentive Compensation Plan, in three equal tranches upon the issuer's common stock achieving specified prices per share.

SEC source: 0001104659-25-115526 · tm2532097-1_4seq1.xml · nonDerivative · entry 1

Askarpour Shahram · CIK 0001546928 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 572,317

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 · price: Performance stock units convert into common stock on a one-for-one basis.

SEC source: 0001104659-25-117861 · tm2532397-1_4aseq1.xml · derivative · entry 3

Askarpour Shahram · CIK 0001546928 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 201,000 shares

Expires not disclosed

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 · derivative.exercise_price: Performance stock units convert into common stock on a one-for-one basis.

F3 · derivative.exercise_date: On November 20, 2024, the reporting person was granted 201,000 Performance Stock Units, which vested on the one year anniversary of grant and otherwise in accordance with the Performance Stock Unit award.

F3 · derivative.expiration_date: On November 20, 2024, the reporting person was granted 201,000 Performance Stock Units, which vested on the one year anniversary of grant and otherwise in accordance with the Performance Stock Unit award.

SEC source: 0001104659-25-117861 · tm2532397-1_4aseq1.xml · nonDerivative · entry 2

Askarpour Shahram · CIK 0001546928 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 484,399

F2 · shares: These shares of common stock were withheld by the issuer to satisfy the reporting person's tax obligations in connection with the vesting of performance stock units.

SEC source: 0001104659-25-117861 · tm2532397-1_4aseq1.xml · nonDerivative · entry 1

Askarpour Shahram · CIK 0001546928 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 572,317

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 · price: Performance stock units convert into common stock on a one-for-one basis.

SEC source: 0001946479-25-000025 · primary_doc.xml · nonDerivative · entry 3

Harborne Christopher · CIK 0001946479 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 1,583,411

F1 · ownership.nature: These shares of common stock, par value $0.001 per share, of Innovative Solutions and Support, Inc. are directly held by Klear Kite LLC, a Delaware limited liability company, whose sole member is Christopher Harborne.

SEC source: 0001946479-25-000025 · primary_doc.xml · nonDerivative · entry 2

Harborne Christopher · CIK 0001946479 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 1,728,420

F1 · ownership.nature: These shares of common stock, par value $0.001 per share, of Innovative Solutions and Support, Inc. are directly held by Klear Kite LLC, a Delaware limited liability company, whose sole member is Christopher Harborne.

SEC source: 0001946479-25-000025 · primary_doc.xml · nonDerivative · entry 1

Harborne Christopher · CIK 0001946479 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 1,760,000

F1 · ownership.nature: These shares of common stock, par value $0.001 per share, of Innovative Solutions and Support, Inc. are directly held by Klear Kite LLC, a Delaware limited liability company, whose sole member is Christopher Harborne.

SEC source: 0001946479-25-000024 · primary_doc.xml · nonDerivative · entry 1

Harborne Christopher · CIK 0001946479 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 1,800,919

F1 · ownership.nature: These shares of common stock, par value $0.001 per share, of Innovative Solutions and Support, Inc. are directly held by Klear Kite LLC, a Delaware limited liability company, whose sole member is Christopher Harborne.

SEC source: 0001946479-25-000023 · primary_doc.xml · nonDerivative · entry 1

Harborne Christopher · CIK 0001946479 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 1,860,586

F1 · ownership.nature: These shares of common stock, par value $0.001 per share, of Innovative Solutions and Support, Inc. are directly held by Klear Kite LLC, a Delaware limited liability company, whose sole member is Christopher Harborne.

SEC source: 0001946479-25-000020 · primary_doc.xml · nonDerivative · entry 1

Harborne Christopher · CIK 0001946479 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 1,951,241

F1 · ownership.nature: These shares of common stock, par value $0.001 per share, of Innovative Solutions and Support, Inc. are directly held by Klear Kite LLC, a Delaware limited liability company, whose sole member is Christopher Harborne.