Quest Resource (NASDAQ: QRHC) director reports new DSU grant and large indirect stake

Rhea-AI Filing Summary

Quest Resource Holding Corp director and 10% owner Daniel M. Friedberg reported an equity award of 8,532 deferred stock units (DSUs) at $1.76 per unit. These DSUs were granted under the company’s 2024 Incentive Compensation Plan and will convert into common shares when he separates from service.

Following this grant, Friedberg holds 71,160 DSUs in total, including prior awards under the 2012 and 2024 incentive plans. He also has 20,000 restricted stock units scheduled to fully vest on August 13, 2026, and 20,585 shares of common stock held directly. In addition, 2,842,353 common shares are held indirectly through Hampstead Park Environmental Services Investment Fund LLC, which is controlled by Hampstead Park Capital Management, LLC, where Friedberg serves as Chief Executive Officer.

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

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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^*

FRIEDBERG DANIEL M.

(Last) (First) (Middle)

C/O HAMPSTEAD PARK CAPITAL MANAGEMENT

6 LIGHTHOUSE LANE

(Street)

OLD GREENWICH CT 06870

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Quest Resource Holding Corp [ QRHC ]

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

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

3. Date of Earliest Transaction (Month/Day/Year)
02/28/2026

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

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

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

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)
			Code	V	Amount	(A) or (D)	Price
Common Stock	02/28/2026		A		8,532(1)	A	$1.76	71,160(2)	D
Common Stock								40,585(3)	D
Common Stock								2,842,353	I	By: Hampstead Park Environmental Services Investment Fund LLC(4)

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)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

1. Name and Address of Reporting Person^*

FRIEDBERG DANIEL M.

(Last) (First) (Middle)

C/O HAMPSTEAD PARK CAPITAL MANAGEMENT

6 LIGHTHOUSE LANE

(Street)

OLD GREENWICH CT 06870

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer

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

1. Name and Address of Reporting Person^*

Hampstead Park Capital Management, LLC

(Last) (First) (Middle)

6 LIGHTHOUSE LANE

(Street)

OLD GREENWICH CT 06870

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer

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

1. Name and Address of Reporting Person^*

Hampstead Park Environmental Services Investment Fund LLC

(Last) (First) (Middle)

6 LIGHTHOUSE LANE

(Street)

OLD GREENWICH CT 06870

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer

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

Explanation of Responses:

1. These reported securities represent deferred stock units ("DSUs") granted under the Issuer's 2024 Incentive Compensation Plan. The shares of common stock underlying such DSUs shall be issued upon Mr. Friedberg's separation from service with the Issuer.

2. The reported securities include (a) 18,153 DSUs granted under the Issuer's 2012 Incentive Compensation Plan and (b) 53,007 DSUs granted under the Issuer's 2024 Incentive Compensation Plan. The shares of common stock underlying such DSUs shall be issued upon Mr. Friedberg's separation from service with the Issuer.

3. Includes (a) 20,000 RSUs that are scheduled to fully vest on August 13, 2026 and (b) 20,585 shares of common stock beneficially owned by Mr. Friedberg.

4. This Form 4 is filed jointly by Hampstead Park Environmental Services Investment Fund LLC ("Hampstead Park Environmental"), Daniel Friedberg and Hampstead Park Capital Management, LLC ("Hampstead Park Capital"). Hampstead Park Capital is the sole member of Hampstead Park Environmental, and Mr. Friedberg is the Chief Executive Officer of Hampstead Park Capital; each may therefore be deemed to control Hampstead Park Environmental. In addition, Mr. Friedberg is a Director of the Issuer.

	/s/ Daniel Friedberg	03/03/2026
	Hampstead Park Capital Management, LLC; By: /s/ Daniel Friedberg, Chief Executive Officer	03/03/2026
	Hampstead Park Environmental Services Investment Fund LLC; By: Hampstead Park Capital Management, LLC; By: /s/ Daniel Friedberg, Chief Executive Officer	03/03/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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FAQ

What insider transaction did QRHC director Daniel Friedberg report on this Form 4?

Daniel M. Friedberg reported an acquisition of 8,532 deferred stock units at $1.76 each. These DSUs were granted under Quest Resource Holding Corp’s 2024 Incentive Compensation Plan and will be settled in common shares when he separates from service with the company.

How many deferred stock units does QRHC’s Daniel Friedberg now hold?

After the latest grant, Daniel Friedberg holds 71,160 deferred stock units in total. This includes 18,153 DSUs under the 2012 Incentive Compensation Plan and 53,007 DSUs under the 2024 Incentive Compensation Plan, all payable in common shares upon his separation from service.

What other equity awards and shares does Daniel Friedberg hold in QRHC?

Daniel Friedberg also holds 20,000 restricted stock units that are scheduled to fully vest on August 13, 2026, plus 20,585 shares of Quest Resource Holding Corp common stock directly. These positions are in addition to his deferred stock units reported in the filing.

What indirect ownership in QRHC is associated with Hampstead Park Environmental Services Investment Fund LLC?

The Form 4 reports 2,842,353 Quest Resource Holding Corp common shares held indirectly through Hampstead Park Environmental Services Investment Fund LLC. Hampstead Park Capital Management, LLC is the sole member of that fund, and Daniel Friedberg is Chief Executive Officer of Hampstead Park Capital.

Why is the QRHC Form 4 filed jointly by Daniel Friedberg and Hampstead Park entities?

The Form 4 is filed jointly because Hampstead Park Environmental Services Investment Fund LLC, Hampstead Park Capital Management, LLC, and Daniel Friedberg are related. Hampstead Park Capital is the sole member of the fund, and Friedberg is its Chief Executive Officer and also a director of Quest Resource Holding Corp.

When will QRHC shares underlying Daniel Friedberg’s deferred stock units be issued?

The common shares underlying Daniel Friedberg’s deferred stock units will be issued upon his separation from service with Quest Resource Holding Corp. Both the DSUs granted under the 2012 and 2024 incentive compensation plans share this same settlement condition according to the Form 4 footnotes.