Quest Resource director granted 12,619 stock units

FRIEDBERG DANIEL M. reported acquisition or exercise transactions in this Form 4 filing.

Rhea-AI Filing Summary

FRIEDBERG DANIEL M. reported acquisition or exercise transactions in this Form 4 filing.

Quest Resource Holding Corp director and 10% owner Daniel M. Friedberg received 12,619 deferred stock units (DSUs) of common stock at $1.19 per share under the company’s 2024 Incentive Compensation Plan. The shares underlying these DSUs will be issued when he separates from service with the company.

After this grant, Friedberg holds 83,779 DSUs in total, including 18,153 DSUs from the 2012 plan and 65,626 DSUs from the 2024 plan. He also has 49,085 direct common share interests, made up of 20,000 restricted stock units scheduled to fully vest on August 13, 2026 and 29,085 shares of common stock, plus 2,842,353 shares held indirectly through Hampstead Park Environmental Services Investment Fund LLC.

Insider Trade Summary

Grant/Award: 12,619 shares

Grant/Award 3 txns

Insider FRIEDBERG DANIEL M., Hampstead Park Capital Management, LLC, Hampstead Park Environmental Services Investment Fund LLC

Role Director, 10% Owner | 10% Owner | 10% Owner

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	12,619	$1.19	$15K
holding	Common Stock	--	--	--
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 132,864 shares (Direct); Common Stock — 2,842,353 shares (Indirect, By: Hampstead Park Environmental Services Investment Fund LLC)

Footnotes (4)

1. F1. 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. F2. The reported securities include (a) 18,153 DSUs granted under the Issuer's 2012 Incentive Compensation Plan and (b) 65,626 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. F3. Includes (a) 20,000 restricted stock units that are scheduled to fully vest on August 13, 2026 and (b) 29,085 shares of common stock beneficially owned by Mr. Friedberg.
4. F4. 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.

Key Figures

DSU grant: 12,619 DSUs at $1.19/share Total DSUs after grant: 83,779 DSUs Direct common interests: 49,085 shares/units +2 more

5 metrics

DSU grant 12,619 DSUs at $1.19/share Deferred stock units granted under 2024 Incentive Compensation Plan

Total DSUs after grant 83,779 DSUs 18,153 from 2012 plan and 65,626 from 2024 plan

Direct common interests 49,085 shares/units 20,000 RSUs vesting August 13, 2026 and 29,085 shares

Indirect holdings 2,842,353 shares Common stock held via Hampstead Park Environmental Services Investment Fund LLC

RSU vesting date August 13, 2026 20,000 restricted stock units scheduled to fully vest on this date

Key Terms

deferred stock units ("DSUs"), restricted stock units, Incentive Compensation Plan, beneficially owned

4 terms

deferred stock units ("DSUs") financial

"These reported securities represent deferred stock units ("DSUs") granted under the Issuer's 2024 Incentive Compensation Plan."

restricted stock units financial

"Includes (a) 20,000 restricted stock units that are scheduled to fully vest on August 13, 2026"

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.

Incentive Compensation Plan financial

"granted under the Issuer's 2012 Incentive Compensation Plan and (b) 65,626 DSUs granted under the Issuer's 2024 Incentive Compensation Plan."

An incentive compensation plan is a formal program that rewards employees and executives with bonuses, stock, or other payments tied to specific performance goals—such as revenue, profit, productivity, or long‑term share price. Investors watch these plans because they shape how leaders make decisions and take risks; like paying a coach by wins rather than effort, well‑designed plans can drive sustainable growth while poor designs can encourage short‑term behaviors that harm shareholder value.

beneficially owned financial

"and (b) 29,085 shares of common stock beneficially owned by Mr. Friedberg."

Beneficially owned describes securities or assets where a person has the economic rights and control—such as the right to receive dividends and to direct voting—even if legal title is held in another name. Think of it like having the keys and using a car that’s registered to someone else: you get the benefits and make decisions. Investors care because beneficial ownership reveals who truly controls value and voting power, affecting corporate decisions and takeover dynamics.

FAQ

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

What insider transaction did QRHC director Daniel Friedberg report?

Daniel M. Friedberg reported receiving 12,619 deferred stock units at $1.19 per share. These DSUs are a compensation grant under Quest Resource’s 2024 Incentive Compensation Plan, with the underlying common shares to be issued when he separates from service with the company.

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

Following the latest grant, Daniel Friedberg holds 83,779 deferred stock units in total. This consists of 18,153 DSUs from the 2012 Incentive Compensation Plan and 65,626 DSUs from the 2024 Incentive Compensation Plan, all payable in common stock upon his separation from service.

What direct equity stake does Daniel Friedberg have in Quest Resource (QRHC)?

Daniel Friedberg has 49,085 direct common share-related interests. This includes 20,000 restricted stock units scheduled to fully vest on August 13, 2026 and 29,085 shares of common stock that he beneficially owns, in addition to his holdings in deferred stock units.

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

An indirect holding of 2,842,353 Quest Resource common shares is attributed to Hampstead Park Environmental Services Investment Fund LLC. Hampstead Park Capital Management, LLC is its sole member, and Daniel Friedberg is CEO of Hampstead Park Capital and a director of Quest Resource.

When will the QRHC shares underlying Daniel Friedberg’s DSUs be issued?

The common shares underlying Daniel Friedberg’s deferred stock units will be issued upon his separation from service with Quest Resource. This applies both to DSUs granted under the 2012 Incentive Compensation Plan and those granted under the 2024 Incentive Compensation Plan.

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

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Accepted by SEC EDGAR 04/02/2026 - 05:15 PM Learn about SEC filing dates

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^*

FRIEDBERG DANIEL M.

(Last) (First) (Middle)

C/O HAMPSTEAD PARK CAPITAL MANAGEMENT

6 LIGHTHOUSE LANE

(Street)

OLD GREENWICH CONNECTICUT 06870

(City) (State) (Zip)

UNITED STATES

(Country)

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)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
03/31/2026

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

	Form filed by One Reporting Person
X	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)
			Code	V	Amount	(A) or (D)	Price
Common Stock	03/31/2026		A		12,619(1)	A	$1.19	83,779(2)	D
Common Stock								49,085(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 CONNECTICUT 06870

(City) (State) (Zip)

UNITED STATES

(Country)

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 CONNECTICUT 06870

(City) (State) (Zip)

UNITED STATES

(Country)

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 CONNECTICUT 06870

(City) (State) (Zip)

UNITED STATES

(Country)

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) 65,626 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 restricted stock units that are scheduled to fully vest on August 13, 2026 and (b) 29,085 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	04/02/2026
	Hampstead Park Capital Management, LLC; By: /s/ Daniel Friedberg, Chief Executive Officer	04/02/2026
	Hampstead Park Environmental Services Investment Fund LLC; By: Hampstead Park Capital Management, LLC; By: /s/ Daniel Friedberg, Chief Executive Officer	04/02/2026
	** 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)