| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| DiGiovanni Jeffrey | Chief Financial Officer | C/O INNOVATIVE SOLUTIONS & SUPPORT, INC., 720 PENNSYLVANIA DRIVE, EXTON | /s/ Jeffrey DiGiovanni | 13 Jan 2026 | 0001752808 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | ISSC | Common Stock | Tax liability | $16,318 | -868 | -1% | $18.80 | 82,750 | 13 Jan 2026 | Direct | F1 |
| Id | Content |
|---|---|
| F1 | 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. |