Innovative Solutions director awarded 5,618 RSUs

Silfen Richard A reported acquisition or exercise transactions in this Form 4 filing.

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Form Type

Rhea-AI Filing Summary

Silfen Richard A reported acquisition or exercise transactions in this Form 4 filing.

Innovative Solutions & Support Inc. director Richard A. Silfen received a grant of 5,618 Restricted Stock Units (RSUs). The award was made at a stated price of $0.00 per unit as part of his equity compensation.

The RSUs were granted under the company’s 2019 Stock-Based Incentive Compensation Plan. Each RSU represents the right to receive one share of common stock, and the units are scheduled to vest on the first anniversary of the grant date, subject to his continued service. Following this grant, Silfen directly holds 7,508 shares or share-equivalent RSUs.

Insider Trade Summary

Grant/Award: 5,618 shares

Grant/Award 1 txn

Insider Silfen Richard A

Role Director

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

Holdings After Transaction: Restricted Stock Units — 7,508 shares (Direct)

Footnotes (1)

F1. 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 units Grant price: $0.00 per unit Total holdings after grant: 7,508 shares/RSUs +1 more

4 metrics

RSUs granted 5,618 units Restricted Stock Units granted on April 16, 2026

Grant price $0.00 per unit Stated price for the 5,618 RSUs

Total holdings after grant 7,508 shares/RSUs Direct ownership following the RSU award

Vesting schedule First anniversary of grant date RSUs vest after one year of continued service

Key Terms

Restricted Stock Units, 2019 Stock-Based Incentive Compensation Plan, vest

3 terms

Restricted Stock Units financial

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

2019 Stock-Based Incentive Compensation Plan financial

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

vest financial

"The RSUs are scheduled to vest on the first anniversary of the grant date, subject to continued service"

A vest is the process by which an employee earns the right to receive certain benefits or ownership interests, such as stock or retirement funds, over time. It’s similar to earning a reward gradually, ensuring that the benefit becomes fully yours only after a set period or meeting specific conditions. This makes it important for investors because it determines when they can actually claim or use those benefits.

FAQ

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

What insider transaction did ISSC director Richard A. Silfen report?

Richard A. Silfen reported receiving 5,618 Restricted Stock Units (RSUs). The grant was made at a stated price of $0.00 per unit under Innovative Solutions & Support Inc.’s 2019 Stock-Based Incentive Compensation Plan as part of his director equity compensation.

How many ISSC shares or equivalents does Richard A. Silfen hold after this Form 4?

After this RSU grant, Richard A. Silfen holds 7,508 shares or share-equivalent RSUs. This total reflects his direct ownership position following the award of 5,618 Restricted Stock Units reported in the Form 4 filing.

When will the newly granted ISSC RSUs to Richard A. Silfen vest?

The 5,618 RSUs granted to Richard A. Silfen are scheduled to vest on the first anniversary of the grant date. Vesting is conditioned on his continued service with Innovative Solutions & Support Inc. through that one-year period.

Under which plan were the ISSC RSUs granted to director Richard A. Silfen?

The RSUs were granted under Innovative Solutions & Support Inc.’s 2019 Stock-Based Incentive Compensation Plan. This plan provides equity-based awards like Restricted Stock Units to directors and other eligible participants as part of their overall compensation.

What does each RSU granted to ISSC director Richard A. Silfen represent?

Each RSU represents the right to receive one share of Innovative Solutions & Support Inc. common stock. Delivery of the underlying shares will occur upon vesting of the RSUs, assuming Silfen continues to provide service through the scheduled vesting date.

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

Form 4 Insider Transactions: What Each Field Means →

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Accepted by SEC EDGAR 04/20/2026 - 12:35 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^*

Silfen Richard A

(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		A	V	5,618⁽¹⁾	A	$0.00	7,508	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. 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/ Richard A Silfen	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