# EDGAR Filing Document

**Accession Number:** 0000836690
**File Stem:** 0001104659-26-053614
**Filing Date:** 2026-5
**Character Count:** 7164
**Document Hash:** 992de2d2f4a988c35323838cdeaaaa3a
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001104659-26-053614.hdr.sgml**: 20260501

**ACCESSION NUMBER**: 0001104659-26-053614

**CONFORMED SUBMISSION TYPE**: 4/A

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20260217

**FILED AS OF DATE**: 20260501

**DATE AS OF CHANGE**: 20260501

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** DiGiovanni Jeffrey
- **CENTRAL INDEX KEY:** 0001752808

**ORGANIZATION NAME:**

**FILING VALUES:**
- **FORM TYPE:** 4/A
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-41503
- **FILM NUMBER:** 26929616

**MAIL ADDRESS:**
- **STREET 1:** C/O STONEMOR PARTNERS L.P.
- **STREET 2:** 3600 HORIZON BOULEVARD
- **CITY:** TREVOSE
- **STATE:** PA
- **ZIP:** 19053
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** INNOVATIVE SOLUTIONS & SUPPORT INC
- **CENTRAL INDEX KEY:** 0000836690
- **STANDARD INDUSTRIAL CLASSIFICATION:** SERVICES-COMPUTER PROGRAMMING SERVICES [7371]
- **ORGANIZATION NAME:** 06 Technology
- **EIN:** 232507402
- **STATE OF INCORPORATION:** PA
- **FISCAL YEAR END:** 0930

**BUSINESS ADDRESS:**
- **STREET 1:** 720 PENNSYLVANIA DRIVE
- **CITY:** EXTON
- **STATE:** PA
- **ZIP:** 19341
- **BUSINESS PHONE:** 610 646 9800

**MAIL ADDRESS:**
- **STREET 1:** 720 PENNSYLVANIA DRIVE
- **CITY:** EXTON
- **STATE:** PA
- **ZIP:** 19341

### UNITED STATES SECURITIES AND EXCHANGE COMMISSION
**Washington, D.C. 20549**

## FORM 4/A

### STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

[ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

[ ] Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>DiGiovanni Jeffrey<br><sub>(Last) (First) (Middle)</sub><br>C/O INNOVATIVE SOLUTIONS & SUPPORT, INC.<br>720 PENNSYLVANIA DRIVE<br><sub>(Street)</sub><br>EXTON, PA 19341<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2026-02-17 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[ ] Director [ ] 10% Owner<br>[X] Officer (give title below) [ ] Other (specify below)<br>_Chief Financial Officer_ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>INNOVATIVE SOLUTIONS & SUPPORT INC [ ISSC ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[X] Form filed by One Reporting Person<br>[ ] Form filed by More than One Reporting Person |

---

## Table I - Non-Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | 3. Transaction Code (V) | 3. Transaction Code (V) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | Code | V | Amount | (A) or (D) | Price | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| Restricted Stock units | 2026-02-17 |  | A |  | 9455<sup>(1)</sup> | A | $19.83 | 92205 | D |  |

---

## Table II - Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | 4. Transaction Code (V) | 4. Transaction Code (V) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 6. Date Exercisable and Expiration Date | 6. Date Exercisable and Expiration Date | 7. Title and Amount of Underlying Securities | 7. Title and Amount of Underlying Securities | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | Code | V | (A) | (D) | Date Exercisable | Expiration Date | Title | Amount or Number of Shares | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| Non-Qualified Stock Option (Right to Buy) | $19.83 | 2026-02-17 |  | A |  | 16108 |  | <sup>(2)</sup> | 2036-02-17 | Commer Stock | 16108 | $0 | 16108 | D |  |
| Performance Stock Units | <sup>(3)</sup> | 2026-02-17 |  | A |  | 21307<sup>(3)</sup> |  | <sup>(4)</sup> | 2036-02-17 | Common Stock | 21307 | $0 | 21307 | D |  |

---

### Footnotes:

(1) 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.

(2) 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.

(3) 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.

(4) 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.

**Signature:** /s/ Jeffrey DiGiovanni  
**Date:** 2026-05-01

### Remarks:

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.

**Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.**