ISSC director reports RSU grant and forfeiture

INNOVATIVE SOLUTIONS & SUPPORT INC director Denise L. Devine reported routine equity compensation changes.

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Form Type

Rhea-AI Filing Summary

INNOVATIVE SOLUTIONS & SUPPORT INC director Denise L. Devine reported routine equity compensation changes. She received a grant of 5,618 Restricted Stock Units (RSUs) under the company’s 2019 Stock-Based Incentive Compensation Plan, each RSU representing one share of common stock and scheduled to vest on the first anniversary of the grant, subject to continued service.

On the same date, 5,403 unvested RSUs were forfeited back to the issuer, reflecting a disposition to the company rather than an open-market sale. After these transactions, Devine directly holds 20,622 RSUs.

Insider Trade Summary

2 transactions reported

Mixed 2 txns

Insider Devine Denise L

Role Director

Type	Security	Shares	Price	Value
Disposition	Restricted Stock Units	5,403	$0.00	$0.00
Grant/Award	Restricted Stock Units	5,618	$0.00	$0.00

Holdings After Transaction: Restricted Stock Units — 20,622 shares (Direct)

Footnotes (2)

F1. Reflects forfeiture of unvested RSUs by reporting person.
F2. 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.

Key Figures

RSUs granted: 5,618 RSUs RSUs forfeited: 5,403 RSUs RSUs held after transactions: 15,004 RSUs

3 metrics

RSUs granted 5,618 RSUs Restricted Stock Unit grant on 2026-04-16

RSUs forfeited 5,403 RSUs Forfeiture of unvested RSUs to issuer on 2026-04-16

RSUs held after transactions 15,004 RSUs Direct RSU holdings following Form 4 transactions

Key Terms

Restricted Stock Units, Disposition to issuer, 2019 Stock-Based Incentive Compensation Plan, vest on the first anniversary

4 terms

Restricted Stock Units financial

"She received a grant of 5,618 Restricted Stock Units (RSUs) under the company’s 2019 Plan"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

Disposition to issuer financial

"5,403 unvested RSUs were forfeited back to the issuer, reflecting a disposition to the company"

2019 Stock-Based Incentive Compensation Plan financial

"The RSUs were granted pursuant to the Company's 2019 Stock-Based Incentive Compensation Plan"

vest on the first anniversary financial

"The RSUs are scheduled to vest on the first anniversary of the grant date"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider activity did ISSC director Denise L. Devine report on this Form 4?

Denise L. Devine reported a routine compensation-related RSU grant and forfeiture. She acquired 5,618 Restricted Stock Units and forfeited 5,403 unvested RSUs back to the company, ending with 15,004 RSUs held directly following these non‑market transactions.

Did Denise L. Devine buy or sell INNOVATIVE SOLUTIONS & SUPPORT (ISSC) shares in the market?

No open‑market buying or selling occurred. The Form 4 shows a grant of 5,618 RSUs and a forfeiture of 5,403 unvested RSUs to the issuer, both compensation-plan events rather than market trades involving cash purchases or sales on an exchange.

How many ISSC Restricted Stock Units does Denise L. Devine hold after these transactions?

After the reported transactions, Denise L. Devine directly holds 15,004 Restricted Stock Units. This figure reflects the 5,618 RSUs granted on the transaction date and the contemporaneous forfeiture of 5,403 unvested RSUs returned to INNOVATIVE SOLUTIONS & SUPPORT INC.

What are the key terms of the RSU grant to Denise L. Devine at ISSC?

The RSUs were granted under ISSC’s 2019 Stock‑Based Incentive Compensation Plan. Each RSU represents one share of common stock and is scheduled to vest on the first anniversary of the grant date, contingent on Denise L. Devine’s continued service with the company.

Why were 5,403 ISSC Restricted Stock Units forfeited by Denise L. Devine?

The filing notes that 5,403 unvested RSUs were forfeited by the reporting person. This disposition was to the issuer and reflects a cancellation of unvested awards under plan terms, rather than any sale of shares into the public market.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 04/20/2026 - 05:19 PM EDT

SEC Form 4

FORM 4

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

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

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^*

Devine Denise L

(Last)

(First)

(Middle)

C/O INNOVATIVE SOLUTIONS & SUPPORT, INC.

720 PENNSYLVANIA DRIVE

(Street)

EXTON

PENNSYLVANIA

19341

(City)

(State)

(Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
INNOVATIVE SOLUTIONS & SUPPORT INC [ ISSC ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director	10% Owner
	Officer (give title below)	Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
04/16/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Restricted Stock Units	04/16/2026		D		5,403⁽¹⁾	D	$0.00	15,004	D
Restricted Stock Units	04/16/2026		A		5,618⁽²⁾	A	$0.00	20,622	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)

Explanation of Responses:

1. Reflects forfeiture of unvested RSUs by reporting person.

2. 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.

	/s/ Denise L. Devine	04/20/2026
	** Signature of Reporting Person	Date
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.
* Form 4: SEC 1474 (03-26)

Source: View Original Filing on SEC EDGAR