Quest Resource director buys 11,000 shares

Quest Resource Holding Corp director Robert J. Lipstein reported an open-market purchase of 11,000 shares of common stock on March 18, 2026 at an average price of 0.8961 per share.

Accepted by SEC EDGAR 03/19/2026 - 07:44 PM EDT Learn about SEC filing dates

Rhea-AI Filing Summary

Quest Resource Holding Corp director Robert J. Lipstein reported an open-market purchase of 11,000 shares of common stock on March 18, 2026 at an average price of 0.8961 per share. Following this trade, he directly holds 48,500 common shares, including 20,000 restricted stock units scheduled to fully vest on August 13, 2026 and 28,500 shares of common stock beneficially owned.

Insider Trade Summary

Net Buyer: 11,000 shares

Net Buy 1 txn

Insider Lipstein Robert J

Role Director

Bought 11,000 shs ($10K)

Type	Security	Shares	Price	Value
Purchase	Common Stock	11,000	$0.8961	$10K

Holdings After Transaction: Common Stock — 48,500 shares (Direct)

Footnotes (1)

1. F1. Includes (a) 20,000 restricted stock units that are scheduled to fully vest on August 13, 2026 and (b) 28,500 shares of common stock beneficially owned by the Reporting Person.

FAQ

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What insider transaction did QRHC director Robert J. Lipstein report?

Robert J. Lipstein reported buying 11,000 Quest Resource Holding Corp common shares in an open-market transaction. The purchase occurred on March 18, 2026 at an average price of 0.8961 per share, indicating a direct increase in his personal equity stake.

How many QRHC shares does Robert J. Lipstein own after this Form 4?

After the reported transaction, Robert J. Lipstein directly holds 48,500 Quest Resource Holding Corp common shares. This total includes 20,000 restricted stock units scheduled to vest on August 13, 2026 and 28,500 shares of common stock that he beneficially owns.

What type of Form 4 transaction did QRHC’s Robert J. Lipstein execute?

The Form 4 shows an open-market purchase of common stock by Robert J. Lipstein. The transaction used code “P,” which represents a purchase in an open market or private transaction, and increased his holdings rather than reflecting a sale or derivative exercise.

How many QRHC restricted stock units does Robert J. Lipstein hold and when do they vest?

Robert J. Lipstein holds 20,000 restricted stock units of Quest Resource Holding Corp. According to the filing footnote, these RSUs are scheduled to fully vest on August 13, 2026, at which point they convert into freely owned common shares, assuming applicable conditions are satisfied.

What portion of Robert J. Lipstein’s QRHC position is beneficially owned common stock?

The filing states that 28,500 of Robert J. Lipstein’s Quest Resource Holding Corp holdings are common shares beneficially owned. Combined with 20,000 restricted stock units, these positions result in total direct holdings of 48,500 common shares following the March 18, 2026 purchase.

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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

X

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^*

Lipstein Robert J

(Last) (First) (Middle)

C/O QUEST RESOURCE HOLDING CORPORATION

433 E. LAS COLINAS BOULEVARD, SUITE 675

(Street)

IRVING TEXAS 75039

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
03/18/2026

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)
			Code	V	Amount	(A) or (D)	Price
Common Stock	03/18/2026		P		11,000	A	$0.8961	48,500(1)	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)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Includes (a) 20,000 restricted stock units that are scheduled to fully vest on August 13, 2026 and (b) 28,500 shares of common stock beneficially owned by the Reporting Person.

	/s/ Laura Nisbett, as Attorney-in-Fact	03/19/2026
	** 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)