QRHC

SEC source: 0000921895-24-001259 · form412364002joh_05162024.xml · nonDerivative · entry 1

Johnston Brett Wade · CIK 0001950481 · Sr. VP of Finance and CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 26,570

F1 · kind: The shares were acquired under the Issuer's employee stock purchase plan in a transaction that was exempt under both Rule 16b-3(d) and Rule 16b-3(c).

F2 · price: Pursuant to the terms of the Issuer's employee stock purchase plan, the price is equal to 85% of the lesser of (i) the market value of the shares on the offering date (November 15, 2023) and (ii) the market value of the shares on the purchase date of the offering which is the last business day of the applicable offering period.

SEC source: 0000921895-24-001258 · form412364002hat_05162024.xml · nonDerivative · entry 1

Hatch S. Ray · CIK 0001663269 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 38,832

F1 · kind: The shares were acquired under the Issuer's employee stock purchase plan in a transaction that was exempt under both Rule 16b-3(d) and Rule 16b-3(c).

F2 · price: Pursuant to the terms of the Issuer's employee stock purchase plan, the price is equal to 85% of the lesser of (i) the market value of the shares on the offering date (November 15, 2023) and (ii) the market value of the shares on the purchase date of the offering which is the last business day of the applicable offering period.

SEC source: 0000921895-25-000353 · form512364002tom_02102025.xml · nonDerivative · entry 4

Tomolonius Sarah · CIK 0001685481 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 17,272

F1 · shares: The reported securities represent deferred stock units granted under the Issuer's 2012 Incentive Compensation Plan. The shares of common stock underlying such deferred stock units shall be issued upon the Reporting Person's separation from service with the Issuer.

SEC source: 0000921895-25-000354 · form512364002nol_02102025.xml · nonDerivative · entry 5

Nolan Stephen A · CIK 0001578531 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 62,901

F3 · shares: The reported securities represent deferred stock units granted under the Issuer's 2012 Incentive Compensation Plan. The shares of common stock underlying such deferred stock units shall be issued upon the Reporting Person's separation from service with the Issuer.

SEC source: 0000921895-25-000353 · form512364002tom_02102025.xml · nonDerivative · entry 3

Tomolonius Sarah · CIK 0001685481 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 16,944

F1 · shares: The reported securities represent deferred stock units granted under the Issuer's 2012 Incentive Compensation Plan. The shares of common stock underlying such deferred stock units shall be issued upon the Reporting Person's separation from service with the Issuer.

SEC source: 0000921895-25-000354 · form512364002nol_02102025.xml · nonDerivative · entry 4

Nolan Stephen A · CIK 0001578531 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 62,572

F3 · shares: The reported securities represent deferred stock units granted under the Issuer's 2012 Incentive Compensation Plan. The shares of common stock underlying such deferred stock units shall be issued upon the Reporting Person's separation from service with the Issuer.

SEC source: 0001104659-24-035008 · tm248937-1_4seq1.xml · nonDerivative · entry 2

WYNNEFIELD PARTNERS SMALL CAP VALUE LP I · CIK 0001251565 · 10% owner

WYNNEFIELD PARTNERS SMALL CAP VALUE LP · CIK 0000899083 · 10% owner

WYNNEFIELD SMALL CAP VALUE OFFSHORE FUND LTD · CIK 0001030806 · 10% owner

WYNNEFIELD CAPITAL MANAGEMENT LLC · CIK 0001056835 · 10% owner

WYNNEFIELD CAPITAL INC · CIK 0001251567 · 10% owner

Wynnefield Capital, Inc. Profit Sharing Plan · CIK 0001289453 · 10% owner

OBUS NELSON · CIK 0001017043 · 10% owner

LANDES JOSHUA · CIK 0001251568 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnotes

Disclosed balance after: 1,440,256

F2 · ownership.nature: The Reporting Person has an indirect beneficial ownership interest in 843,247 shares of Common Stock, which are directly beneficially owned by Wynnefield Partners Small Cap Value, L.P., as members of a group under Section 13(d) of the Securities Exchange Act of 1934, as amended (the "Exchange Act"). Wynnefield Partners Small Cap Value, L.P., which maintains offices at the same address as the Reporting Person, is filing this statement jointly with the Reporting Person. Wynnefield Capital Management, LLC, as the sole general partner of Wynnefield Partners Small Cap Value, L.P., has an indirect beneficial ownership interest in the shares of Common Stock that Wynnefield Partners Small Cap Value L.P. directly beneficially owns. Nelson Obus and Joshua Landes, as co-managing members of Wynnefield Capital Management, LLC, have an indirect beneficial ownership interest in the shares of Common Stock that Wynnefield Partners Small Cap Value, L.P. directly beneficially owns.

F3 · ownership.nature: The Reporting Person has an indirect beneficial ownership interest in 340,006 shares of Common Stock, which are directly beneficially owned by Wynnefield Small Cap Value Offshore Fund, Ltd., as members of a group under Section 13(d) of the Exchange Act. Wynnefield Small Cap Value Offshore Fund, Ltd., which maintains offices at the same address as the Reporting Person, is filing this statement jointly with the Reporting Person. Wynnefield Capital, Inc. as the sole investment manager of Wynnefield Small Cap Value Offshore Fund, Ltd., has an indirect beneficial ownership interest in the shares of Common Stock that Wynnefield Small Cap Value Offshore Fund, Ltd. directly beneficially owns. Nelson Obus and Joshua Landes, as principal executive officers of Wynnefield Capital, Inc., have an indirect beneficial ownership interest in the shares of Common Stock that Wynnefield Small Cap Value Offshore Fund, Ltd. directly beneficially owns.

F4 · ownership.nature: The Reporting Person has an indirect beneficial ownership interest in 257,003 shares of Common Stock, which are directly beneficially owned by Wynnefield Capital, Inc. Profit Sharing Plan, as members of a group under Section 13(d) of the Exchange Act. Wynnefield Capital, Inc. Profit Sharing Plan, which maintains offices at the same address as the Reporting Person, is filing this Form jointly with the Reporting Person. Mr. Obus and Mr. Landes, as co-trustees, has the power to vote and dispose of Wynnefield Capital, Inc. Profit Sharing Plan's investments in securities and has an indirect beneficial ownership interest in the shares of Common Stock that Wynnefield Capital, Inc. Profit Sharing Plan directly beneficially owns.

SEC source: 0001104659-24-035008 · tm248937-1_4seq1.xml · nonDerivative · entry 1

WYNNEFIELD PARTNERS SMALL CAP VALUE LP I · CIK 0001251565 · 10% owner

WYNNEFIELD PARTNERS SMALL CAP VALUE LP · CIK 0000899083 · 10% owner

WYNNEFIELD SMALL CAP VALUE OFFSHORE FUND LTD · CIK 0001030806 · 10% owner

WYNNEFIELD CAPITAL MANAGEMENT LLC · CIK 0001056835 · 10% owner

WYNNEFIELD CAPITAL INC · CIK 0001251567 · 10% owner

Wynnefield Capital, Inc. Profit Sharing Plan · CIK 0001289453 · 10% owner

OBUS NELSON · CIK 0001017043 · 10% owner

LANDES JOSHUA · CIK 0001251568 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,294,093

F1 · ownership.direct: The Reporting Person directly beneficially owns 1,294,093 shares of common stock, $0.001 par value per share ("Common Stock") of Quest Resource Holding Corporation (the "Issuer"). Wynnefield Capital Management, LLC, as the sole general partner of the Reporting Person, has an indirect beneficial ownership interest in the shares of Common Stock that the Reporting Person directly beneficially owns. Nelson Obus and Joshua Landes, as co-managing members of Wynnefield Capital Management, LLC, have an indirect beneficial ownership interest in the shares of Common Stock that the Reporting Person directly beneficially owns.

SEC source: 0000921895-25-000353 · form512364002tom_02102025.xml · nonDerivative · entry 2

Tomolonius Sarah · CIK 0001685481 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 16,555

F1 · shares: The reported securities represent deferred stock units granted under the Issuer's 2012 Incentive Compensation Plan. The shares of common stock underlying such deferred stock units shall be issued upon the Reporting Person's separation from service with the Issuer.

SEC source: 0000921895-25-000354 · form512364002nol_02102025.xml · nonDerivative · entry 3

Nolan Stephen A · CIK 0001578531 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 62,184

F3 · shares: The reported securities represent deferred stock units granted under the Issuer's 2012 Incentive Compensation Plan. The shares of common stock underlying such deferred stock units shall be issued upon the Reporting Person's separation from service with the Issuer.

SEC source: 0000921895-25-000353 · form512364002tom_02102025.xml · nonDerivative · entry 1

Tomolonius Sarah · CIK 0001685481 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 16,081

F1 · shares: The reported securities represent deferred stock units granted under the Issuer's 2012 Incentive Compensation Plan. The shares of common stock underlying such deferred stock units shall be issued upon the Reporting Person's separation from service with the Issuer.

SEC source: 0000921895-25-000354 · form512364002nol_02102025.xml · nonDerivative · entry 2

Nolan Stephen A · CIK 0001578531 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 61,710

F3 · shares: The reported securities represent deferred stock units granted under the Issuer's 2012 Incentive Compensation Plan. The shares of common stock underlying such deferred stock units shall be issued upon the Reporting Person's separation from service with the Issuer.

SEC source: 0000921895-25-000354 · form512364002nol_02102025.xml · nonDerivative · entry 1

Nolan Stephen A · CIK 0001578531 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 61,227

F1 · date: The reported securities represent deferred stock units granted under the Issuer's 2012 Incentive Compensation Plan, on a monthly basis and at the end of each month, starting from February 28, 2022 to December 29, 2023. The shares of common stock underlying such deferred stock units shall be issued upon the Reporting Person's separation from service with the Issuer.

F1 · shares: The reported securities represent deferred stock units granted under the Issuer's 2012 Incentive Compensation Plan, on a monthly basis and at the end of each month, starting from February 28, 2022 to December 29, 2023. The shares of common stock underlying such deferred stock units shall be issued upon the Reporting Person's separation from service with the Issuer.

F2 · price: The prices ranged from $4.09 to $8.86, inclusive. The Reporting Person undertakes to provide the Issuer and any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, further information regarding the number of deferred stock units granted at each separate price such deferred stock units were granted.

SEC source: 0000921895-23-002794 · form412364002_12222023.xml · nonDerivative · entry 1

Dunning Audrey · CIK 0001800836 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,000

SEC source: 0000921895-23-002770 · form412364002_12152023.xml · derivative · entry 7

Sweitzer David P · CIK 0001685530 · EVP and COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 21,033 shares

Expires 2028-01-16

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F5 · derivative.exercise_date: The option, representing a right to purchase a total of 100,000 shares, is exercisable in three equal annual installments beginning on January 16, 2019, which was the first anniversary of the date on which the option was granted.

SEC source: 0000921895-23-002770 · form412364002_12152023.xml · nonDerivative · entry 4

Sweitzer David P · CIK 0001685530 · EVP and COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,511

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $6.50 to $6.76, inclusive. The Reporting Person undertakes to provide the Issuer and any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, further information regarding the number of shares sold at each separate price such shares were sold.

SEC source: 0000921895-23-002770 · form412364002_12152023.xml · nonDerivative · entry 3

Sweitzer David P · CIK 0001685530 · EVP and COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 29,544

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: These shares represent the number of shares exercised by the Reporting Person.

SEC source: 0001193805-23-001593 · e619120_4-qrhc.xml · nonDerivative · entry 1

Johnston Brett Wade · CIK 0001950481 · Sr. VP of Finance and CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 24,069

SEC source: 0000921895-23-002770 · form412364002_12152023.xml · derivative · entry 6

Sweitzer David P · CIK 0001685530 · EVP and COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 21,033

Underlying: Common Stock · 2,526 shares

Expires 2028-01-16

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F5 · derivative.exercise_date: The option, representing a right to purchase a total of 100,000 shares, is exercisable in three equal annual installments beginning on January 16, 2019, which was the first anniversary of the date on which the option was granted.

SEC source: 0000921895-23-002770 · form412364002_12152023.xml · nonDerivative · entry 2

Sweitzer David P · CIK 0001685530 · EVP and COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,511

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $6.50 to $6.55, inclusive. The Reporting Person undertakes to provide the Issuer and any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, further information regarding the number of shares sold at each separate price such shares were sold.

SEC source: 0000921895-23-002770 · form412364002_12152023.xml · nonDerivative · entry 1

Sweitzer David P · CIK 0001685530 · EVP and COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,037

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: These shares represent the number of shares exercised by the Reporting Person.

SEC source: 0000921895-23-002752 · form412364002hat_12122023.xml · nonDerivative · entry 1

Hatch S. Ray · CIK 0001663269 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 37,269

F1 · price: The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $6.18 to $6.2796, inclusive. The Reporting Persons undertake to provide the Issuer and any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, further information regarding the number of shares purchased at each separate price such shares were purchased.

SEC source: 0001104659-23-125373 · tm2332732-1_4seq1.xml · nonDerivative · entry 4

WYNNEFIELD PARTNERS SMALL CAP VALUE LP I · CIK 0001251565 · 10% owner

WYNNEFIELD PARTNERS SMALL CAP VALUE LP · CIK 0000899083 · 10% owner

WYNNEFIELD SMALL CAP VALUE OFFSHORE FUND LTD · CIK 0001030806 · 10% owner

WYNNEFIELD CAPITAL MANAGEMENT LLC · CIK 0001056835 · 10% owner

WYNNEFIELD CAPITAL INC · CIK 0001251567 · 10% owner

Wynnefield Capital, Inc. Profit Sharing Plan · CIK 0001289453 · 10% owner

OBUS NELSON · CIK 0001017043 · 10% owner

LANDES JOSHUA · CIK 0001251568 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnotes

Disclosed balance after: 1,427,758

F5 · price: The price reported in Column 4 is a weighted average price. These shares of Common Stock of the Issuer were purchased in multiple transactions at prices ranging from $6.19 - $6.20. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares of Common Stock purchased at each separate price within the ranges set forth in this footnote (5) to this Form 4.

F2 · ownership.nature: The Reporting Person has an indirect beneficial ownership interest in 831,204 shares of Common Stock, which are directly beneficially owned by Wynnefield Partners Small Cap Value, L.P., as members of a group under Section 13(d) of the Securities Exchange Act of 1934, as amended (the "Exchange Act"). Wynnefield Partners Small Cap Value, L.P., which maintains offices at the same address as the Reporting Person, is filing this statement jointly with the Reporting Person. Wynnefield Capital Management, LLC, as the sole general partner of Wynnefield Partners Small Cap Value, L.P., has an indirect beneficial ownership interest in the shares of Common Stock that Wynnefield Partners Small Cap Value L.P. directly beneficially owns. Nelson Obus and Joshua Landes, as co-managing members of Wynnefield Capital Management, LLC, have an indirect beneficial ownership interest in the shares of Common Stock that Wynnefield Partners Small Cap Value, L.P. directly beneficially owns

F3 · ownership.nature: The Reporting Person has an indirect beneficial ownership interest in 331,751 shares of Common Stock, which are directly beneficially owned by Wynnefield Small Cap Value Offshore Fund, Ltd., as members of a group under Section 13(d) of the Exchange Act. Wynnefield Small Cap Value Offshore Fund, Ltd., which maintains offices at the same address as the Reporting Person, is filing this statement jointly with the Reporting Person. Wynnefield Capital, Inc. as the sole investment manager of Wynnefield Small Cap Value Offshore Fund, Ltd., has an indirect beneficial ownership interest in the shares of Common Stock that Wynnefield Small Cap Value Offshore Fund, Ltd. directly beneficially owns. Nelson Obus and Joshua Landes, as principal executive officers of Wynnefield Capital, Inc., have an indirect beneficial ownership interest in the shares of Common Stock that Wynnefield Small Cap Value Offshore Fund, Ltd. directly beneficially owns.

F4 · ownership.nature: The Reporting Person has an indirect beneficial ownership interest in 264,803 shares of Common Stock, which are directly beneficially owned by Wynnefield Capital, Inc. Profit Sharing Plan, as members of a group under Section 13(d) of the Exchange Act. Wynnefield Capital, Inc. Profit Sharing Plan, which maintains offices at the same address as the Reporting Person, is filing this Form jointly with the Reporting Person. Mr. Obus and Mr. Landes, as co-trustees, has the power to vote and dispose of Wynnefield Capital, Inc. Profit Sharing Plan's investments in securities and has an indirect beneficial ownership interest in the shares of Common Stock that Wynnefield Capital, Inc. Profit Sharing Plan directly beneficially owns.

SEC source: 0001104659-23-125373 · tm2332732-1_4seq1.xml · nonDerivative · entry 3

WYNNEFIELD PARTNERS SMALL CAP VALUE LP I · CIK 0001251565 · 10% owner

WYNNEFIELD PARTNERS SMALL CAP VALUE LP · CIK 0000899083 · 10% owner

WYNNEFIELD SMALL CAP VALUE OFFSHORE FUND LTD · CIK 0001030806 · 10% owner

WYNNEFIELD CAPITAL MANAGEMENT LLC · CIK 0001056835 · 10% owner

WYNNEFIELD CAPITAL INC · CIK 0001251567 · 10% owner

Wynnefield Capital, Inc. Profit Sharing Plan · CIK 0001289453 · 10% owner

OBUS NELSON · CIK 0001017043 · 10% owner

LANDES JOSHUA · CIK 0001251568 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,275,369

F5 · price: The price reported in Column 4 is a weighted average price. These shares of Common Stock of the Issuer were purchased in multiple transactions at prices ranging from $6.19 - $6.20. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares of Common Stock purchased at each separate price within the ranges set forth in this footnote (5) to this Form 4.

F1 · ownership.direct: The Reporting Person directly beneficially owns 1,275,369 shares of common stock, $0.001 par value per share ("Common Stock") of Quest Resource Holding Corporation (the "Issuer"). Wynnefield Capital Management, LLC, as the sole general partner of the Reporting Person, has an indirect beneficial ownership interest in the shares of Common Stock that the Reporting Person directly beneficially owns. Nelson Obus and Joshua Landes, as co-managing members of Wynnefield Capital Management, LLC, have an indirect beneficial ownership interest in the shares of Common Stock that the Reporting Person directly beneficially owns.

SEC source: 0000921895-23-002748 · form412364002_12122023.xml · derivative · entry 9

Sweitzer David P · CIK 0001685530 · EVP and COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 23,559

Underlying: Common Stock · 47,256 shares

Expires 2028-01-16

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F6 · derivative.exercise_date: The option, representing a right to purchase a total of 100,000 shares, is exercisable in three equal annual installments beginning on January 16, 2019, which was the first anniversary of the date on which the option was granted.

SEC source: 0000921895-23-002748 · form412364002_12122023.xml · nonDerivative · entry 5

Sweitzer David P · CIK 0001685530 · EVP and COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,511

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $6.13 to $6.355, inclusive. The Reporting Person undertakes to provide the Issuer and any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, further information regarding the number of shares sold at each separate price such shares were sold.

SEC source: 0000921895-23-002748 · form412364002_12122023.xml · nonDerivative · entry 4

Sweitzer David P · CIK 0001685530 · EVP and COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 55,767

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: These shares represent the number of shares exercised by the Reporting Person.

SEC source: 0001104659-23-125373 · tm2332732-1_4seq1.xml · nonDerivative · entry 2

WYNNEFIELD PARTNERS SMALL CAP VALUE LP I · CIK 0001251565 · 10% owner

WYNNEFIELD PARTNERS SMALL CAP VALUE LP · CIK 0000899083 · 10% owner

WYNNEFIELD SMALL CAP VALUE OFFSHORE FUND LTD · CIK 0001030806 · 10% owner

WYNNEFIELD CAPITAL MANAGEMENT LLC · CIK 0001056835 · 10% owner

WYNNEFIELD CAPITAL INC · CIK 0001251567 · 10% owner

Wynnefield Capital, Inc. Profit Sharing Plan · CIK 0001289453 · 10% owner

OBUS NELSON · CIK 0001017043 · 10% owner

LANDES JOSHUA · CIK 0001251568 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnotes

Disclosed balance after: 1,426,737

F2 · ownership.nature: The Reporting Person has an indirect beneficial ownership interest in 831,204 shares of Common Stock, which are directly beneficially owned by Wynnefield Partners Small Cap Value, L.P., as members of a group under Section 13(d) of the Securities Exchange Act of 1934, as amended (the "Exchange Act"). Wynnefield Partners Small Cap Value, L.P., which maintains offices at the same address as the Reporting Person, is filing this statement jointly with the Reporting Person. Wynnefield Capital Management, LLC, as the sole general partner of Wynnefield Partners Small Cap Value, L.P., has an indirect beneficial ownership interest in the shares of Common Stock that Wynnefield Partners Small Cap Value L.P. directly beneficially owns. Nelson Obus and Joshua Landes, as co-managing members of Wynnefield Capital Management, LLC, have an indirect beneficial ownership interest in the shares of Common Stock that Wynnefield Partners Small Cap Value, L.P. directly beneficially owns

F3 · ownership.nature: The Reporting Person has an indirect beneficial ownership interest in 331,751 shares of Common Stock, which are directly beneficially owned by Wynnefield Small Cap Value Offshore Fund, Ltd., as members of a group under Section 13(d) of the Exchange Act. Wynnefield Small Cap Value Offshore Fund, Ltd., which maintains offices at the same address as the Reporting Person, is filing this statement jointly with the Reporting Person. Wynnefield Capital, Inc. as the sole investment manager of Wynnefield Small Cap Value Offshore Fund, Ltd., has an indirect beneficial ownership interest in the shares of Common Stock that Wynnefield Small Cap Value Offshore Fund, Ltd. directly beneficially owns. Nelson Obus and Joshua Landes, as principal executive officers of Wynnefield Capital, Inc., have an indirect beneficial ownership interest in the shares of Common Stock that Wynnefield Small Cap Value Offshore Fund, Ltd. directly beneficially owns.

F4 · ownership.nature: The Reporting Person has an indirect beneficial ownership interest in 264,803 shares of Common Stock, which are directly beneficially owned by Wynnefield Capital, Inc. Profit Sharing Plan, as members of a group under Section 13(d) of the Exchange Act. Wynnefield Capital, Inc. Profit Sharing Plan, which maintains offices at the same address as the Reporting Person, is filing this Form jointly with the Reporting Person. Mr. Obus and Mr. Landes, as co-trustees, has the power to vote and dispose of Wynnefield Capital, Inc. Profit Sharing Plan's investments in securities and has an indirect beneficial ownership interest in the shares of Common Stock that Wynnefield Capital, Inc. Profit Sharing Plan directly beneficially owns.

SEC source: 0001104659-23-125373 · tm2332732-1_4seq1.xml · nonDerivative · entry 1

WYNNEFIELD PARTNERS SMALL CAP VALUE LP I · CIK 0001251565 · 10% owner

WYNNEFIELD PARTNERS SMALL CAP VALUE LP · CIK 0000899083 · 10% owner

WYNNEFIELD SMALL CAP VALUE OFFSHORE FUND LTD · CIK 0001030806 · 10% owner

WYNNEFIELD CAPITAL MANAGEMENT LLC · CIK 0001056835 · 10% owner

WYNNEFIELD CAPITAL INC · CIK 0001251567 · 10% owner

Wynnefield Capital, Inc. Profit Sharing Plan · CIK 0001289453 · 10% owner

OBUS NELSON · CIK 0001017043 · 10% owner

LANDES JOSHUA · CIK 0001251568 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,273,781

F1 · ownership.direct: The Reporting Person directly beneficially owns 1,275,369 shares of common stock, $0.001 par value per share ("Common Stock") of Quest Resource Holding Corporation (the "Issuer"). Wynnefield Capital Management, LLC, as the sole general partner of the Reporting Person, has an indirect beneficial ownership interest in the shares of Common Stock that the Reporting Person directly beneficially owns. Nelson Obus and Joshua Landes, as co-managing members of Wynnefield Capital Management, LLC, have an indirect beneficial ownership interest in the shares of Common Stock that the Reporting Person directly beneficially owns.

SEC source: 0000921895-23-002748 · form412364002_12122023.xml · derivative · entry 8

Sweitzer David P · CIK 0001685530 · EVP and COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 70,815

Underlying: Common Stock · 29,185 shares

Expires 2028-01-16

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F6 · derivative.exercise_date: The option, representing a right to purchase a total of 100,000 shares, is exercisable in three equal annual installments beginning on January 16, 2019, which was the first anniversary of the date on which the option was granted.

SEC source: 0000921895-23-002748 · form412364002_12122023.xml · derivative · entry 7

Sweitzer David P · CIK 0001685530 · EVP and COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 14,583 shares

Expires 2026-10-03

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F5 · derivative.exercise_date: The option, representing a right to purchase a total of 62,500 shares, is exercisable in five equal annual installments beginning on October 3, 2017, which was the first anniversary of the date on which the option was granted.

SEC source: 0000921895-23-002748 · form412364002_12122023.xml · nonDerivative · entry 3

Sweitzer David P · CIK 0001685530 · EVP and COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,511

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $6.19 to $6.79, inclusive. The Reporting Person undertakes to provide the Issuer and any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, further information regarding the number of shares sold at each separate price such shares were sold.

SEC source: 0000921895-23-002748 · form412364002_12122023.xml · nonDerivative · entry 2

Sweitzer David P · CIK 0001685530 · EVP and COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 52,279

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: These shares represent the number of shares exercised by the Reporting Person.

SEC source: 0000921895-23-002748 · form412364002_12122023.xml · nonDerivative · entry 1

Sweitzer David P · CIK 0001685530 · EVP and COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 23,094

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: These shares represent the number of shares exercised by the Reporting Person.

SEC source: 0001104659-23-124722 · tm2332467-1_4seq1.xml · nonDerivative · entry 3

WYNNEFIELD PARTNERS SMALL CAP VALUE LP I · CIK 0001251565 · 10% owner

WYNNEFIELD PARTNERS SMALL CAP VALUE LP · CIK 0000899083 · 10% owner

WYNNEFIELD SMALL CAP VALUE OFFSHORE FUND LTD · CIK 0001030806 · 10% owner

WYNNEFIELD CAPITAL MANAGEMENT LLC · CIK 0001056835 · 10% owner

WYNNEFIELD CAPITAL INC · CIK 0001251567 · 10% owner

Wynnefield Capital, Inc. Profit Sharing Plan · CIK 0001289453 · 10% owner

OBUS NELSON · CIK 0001017043 · 10% owner

LANDES JOSHUA · CIK 0001251568 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,270,610

F2 · ownership.direct: The Reporting Person directly beneficially owns 1,270,610 shares of Common Stock of the Issuer. Wynnefield Capital Management, LLC, as the sole general partner of the Reporting Person, has an indirect beneficial ownership interest in the shares of Common Stock that the Reporting Person directly beneficially owns. Nelson Obus and Joshua Landes, as co-managing members of Wynnefield Capital Management, LLC, have an indirect beneficial ownership interest in the shares of Common Stock that the Reporting Person directly beneficially owns.

SEC source: 0001104659-23-124722 · tm2332467-1_4seq1.xml · nonDerivative · entry 2

WYNNEFIELD PARTNERS SMALL CAP VALUE LP I · CIK 0001251565 · 10% owner

WYNNEFIELD PARTNERS SMALL CAP VALUE LP · CIK 0000899083 · 10% owner

WYNNEFIELD SMALL CAP VALUE OFFSHORE FUND LTD · CIK 0001030806 · 10% owner

WYNNEFIELD CAPITAL MANAGEMENT LLC · CIK 0001056835 · 10% owner

WYNNEFIELD CAPITAL INC · CIK 0001251567 · 10% owner

Wynnefield Capital, Inc. Profit Sharing Plan · CIK 0001289453 · 10% owner

OBUS NELSON · CIK 0001017043 · 10% owner

LANDES JOSHUA · CIK 0001251568 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnotes

Disclosed balance after: 1,423,408

F1 · price: The price reported in Column 4 is a weighted average price. These shares of common stock, $0.001 par value per share ("Common Stock") of Quest Resource Holding Corporation (the "Issuer") were purchased in multiple transactions at prices ranging from $6.90 - $6.92. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares of Common Stock purchased at each separate price within the ranges set forth in this footnote (1) to this Form 4.

F3 · ownership.nature: The Reporting Person has an indirect beneficial ownership interest in 828,143 shares of Common Stock, which are directly beneficially owned by Wynnefield Partners Small Cap Value, L.P., as members of a group under Section 13(d) of the Securities Exchange Act of 1934, as amended (the "Exchange Act"). Wynnefield Partners Small Cap Value, L.P., which maintains offices at the same address as the Reporting Person, is filing this statement jointly with the Reporting Person. Wynnefield Capital Management, LLC, as the sole general partner of Wynnefield Partners Small Cap Value, L.P., has an indirect beneficial ownership interest in the shares of Common Stock that Wynnefield Partners Small Cap Value L.P. directly beneficially owns. Nelson Obus and Joshua Landes, as co-managing members of Wynnefield Capital Management, LLC, have an indirect beneficial ownership interest in the shares of Common Stock that Wynnefield Partners Small Cap Value, L.P. directly beneficially owns.

F4 · ownership.nature: The Reporting Person has an indirect beneficial ownership interest in 330,462 shares of Common Stock, which are directly beneficially owned by Wynnefield Small Cap Value Offshore Fund, Ltd., as members of a group under Section 13(d) of the Exchange Act. Wynnefield Small Cap Value Offshore Fund, Ltd., which maintains offices at the same address as the Reporting Person, is filing this statement jointly with the Reporting Person. Wynnefield Capital, Inc. as the sole investment manager of Wynnefield Small Cap Value Offshore Fund, Ltd., has an indirect beneficial ownership interest in the shares of Common Stock that Wynnefield Small Cap Value Offshore Fund, Ltd. directly beneficially owns. Nelson Obus and Joshua Landes, as principal executive officers of Wynnefield Capital, Inc., have an indirect beneficial ownership interest in the shares of Common Stock that Wynnefield Small Cap Value Offshore Fund, Ltd. directly beneficially owns.

F5 · ownership.nature: The Reporting Person has an indirect beneficial ownership interest in 264,803 shares of Common Stock, which are directly beneficially owned by Wynnefield Capital, Inc. Profit Sharing Plan, as members of a group under Section 13(d) of the Exchange Act. Wynnefield Capital, Inc. Profit Sharing Plan, which maintains offices at the same address as the Reporting Person, is filing this Form jointly with the Reporting Person. Mr. Obus and Mr. Landes, as co-trustees, has the power to vote and dispose of Wynnefield Capital, Inc. Profit Sharing Plan's investments in securities and has an indirect beneficial ownership interest in the shares of Common Stock that Wynnefield Capital, Inc. Profit Sharing Plan directly beneficially owns.

SEC source: 0001104659-23-124722 · tm2332467-1_4seq1.xml · nonDerivative · entry 1

WYNNEFIELD PARTNERS SMALL CAP VALUE LP I · CIK 0001251565 · 10% owner

WYNNEFIELD PARTNERS SMALL CAP VALUE LP · CIK 0000899083 · 10% owner

WYNNEFIELD SMALL CAP VALUE OFFSHORE FUND LTD · CIK 0001030806 · 10% owner

WYNNEFIELD CAPITAL MANAGEMENT LLC · CIK 0001056835 · 10% owner

WYNNEFIELD CAPITAL INC · CIK 0001251567 · 10% owner

Wynnefield Capital, Inc. Profit Sharing Plan · CIK 0001289453 · 10% owner

OBUS NELSON · CIK 0001017043 · 10% owner

LANDES JOSHUA · CIK 0001251568 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,270,365

F1 · price: The price reported in Column 4 is a weighted average price. These shares of common stock, $0.001 par value per share ("Common Stock") of Quest Resource Holding Corporation (the "Issuer") were purchased in multiple transactions at prices ranging from $6.90 - $6.92. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares of Common Stock purchased at each separate price within the ranges set forth in this footnote (1) to this Form 4.

F2 · ownership.direct: The Reporting Person directly beneficially owns 1,270,610 shares of Common Stock of the Issuer. Wynnefield Capital Management, LLC, as the sole general partner of the Reporting Person, has an indirect beneficial ownership interest in the shares of Common Stock that the Reporting Person directly beneficially owns. Nelson Obus and Joshua Landes, as co-managing members of Wynnefield Capital Management, LLC, have an indirect beneficial ownership interest in the shares of Common Stock that the Reporting Person directly beneficially owns.

SEC source: 0001104659-23-124035 · tm2332330-1_4seq1.xml · nonDerivative · entry 3

WYNNEFIELD PARTNERS SMALL CAP VALUE LP I · CIK 0001251565 · 10% owner

WYNNEFIELD PARTNERS SMALL CAP VALUE LP · CIK 0000899083 · 10% owner

WYNNEFIELD SMALL CAP VALUE OFFSHORE FUND LTD · CIK 0001030806 · 10% owner

WYNNEFIELD CAPITAL MANAGEMENT LLC · CIK 0001056835 · 10% owner

WYNNEFIELD CAPITAL INC · CIK 0001251567 · 10% owner

Wynnefield Capital, Inc. Profit Sharing Plan · CIK 0001289453 · 10% owner

OBUS NELSON · CIK 0001017043 · 10% owner

LANDES JOSHUA · CIK 0001251568 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnotes

Disclosed balance after: 1,422,466

F2 · price: The price reported in Column 4 is a weighted average price. These shares of Common Stock of the Issuer were purchased in multiple transactions at prices ranging from $6.93 - $6.94. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares of Common Stock purchased at each separate price within the ranges set forth in this footnote (2) to this Form 4.

F3 · ownership.nature: The Reporting Person has an indirect beneficial ownership interest in 827,566 shares of Common Stock, which are directly beneficially owned by Wynnefield Partners Small Cap Value, L.P., as members of a group under Section 13(d) of the Securities Exchange Act of 1934, as amended (the "Exchange Act"). Wynnefield Partners Small Cap Value, L.P., which maintains offices at the same address as the Reporting Person, is filing this statement jointly with the Reporting Person. Wynnefield Capital Management, LLC, as the sole general partner of Wynnefield Partners Small Cap Value, L.P., has an indirect beneficial ownership interest in the shares of Common Stock that Wynnefield Partners Small Cap Value L.P. directly beneficially owns. Nelson Obus and Joshua Landes, as co-managing members of Wynnefield Capital Management, LLC, have an indirect beneficial ownership interest in the shares of Common Stock that Wynnefield Partners Small Cap Value, L.P. directly beneficially owns.

F4 · ownership.nature: The Reporting Person has an indirect beneficial ownership interest in 330,097 shares of Common Stock, which are directly beneficially owned by Wynnefield Small Cap Value Offshore Fund, Ltd., as members of a group under Section 13(d) of the Exchange Act. Wynnefield Small Cap Value Offshore Fund, Ltd., which maintains offices at the same address as the Reporting Person, is filing this statement jointly with the Reporting Person. Wynnefield Capital, Inc. as the sole investment manager of Wynnefield Small Cap Value Offshore Fund, Ltd., has an indirect beneficial ownership interest in the shares of Common Stock that Wynnefield Small Cap Value Offshore Fund, Ltd. directly beneficially owns. Nelson Obus and Joshua Landes, as principal executive officers of Wynnefield Capital, Inc., have an indirect beneficial ownership interest in the shares of Common Stock that Wynnefield Small Cap Value Offshore Fund, Ltd. directly beneficially owns.

F5 · ownership.nature: The Reporting Person has an indirect beneficial ownership interest in 264,803 shares of Common Stock, which are directly beneficially owned by Wynnefield Capital, Inc. Profit Sharing Plan, as members of a group under Section 13(d) of the Exchange Act. Wynnefield Capital, Inc. Profit Sharing Plan, which maintains offices at the same address as the Reporting Person, is filing this Form jointly with the Reporting Person. Mr. Obus and Mr. Landes, as co-trustees, has the power to vote and dispose of Wynnefield Capital, Inc. Profit Sharing Plan's investments in securities and has an indirect beneficial ownership interest in the shares of Common Stock that Wynnefield Capital, Inc. Profit Sharing Plan directly beneficially owns.

SEC source: 0001104659-23-124035 · tm2332330-1_4seq1.xml · nonDerivative · entry 2

WYNNEFIELD PARTNERS SMALL CAP VALUE LP I · CIK 0001251565 · 10% owner

WYNNEFIELD PARTNERS SMALL CAP VALUE LP · CIK 0000899083 · 10% owner

WYNNEFIELD SMALL CAP VALUE OFFSHORE FUND LTD · CIK 0001030806 · 10% owner

WYNNEFIELD CAPITAL MANAGEMENT LLC · CIK 0001056835 · 10% owner

WYNNEFIELD CAPITAL INC · CIK 0001251567 · 10% owner

Wynnefield Capital, Inc. Profit Sharing Plan · CIK 0001289453 · 10% owner

OBUS NELSON · CIK 0001017043 · 10% owner

LANDES JOSHUA · CIK 0001251568 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,269,467

F2 · price: The price reported in Column 4 is a weighted average price. These shares of Common Stock of the Issuer were purchased in multiple transactions at prices ranging from $6.93 - $6.94. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares of Common Stock purchased at each separate price within the ranges set forth in this footnote (2) to this Form 4.

F1 · ownership.direct: The Reporting Person directly beneficially owns 1,269,467 shares of common stock, $0.001 par value per share ("Common Stock") of Quest Resource Holding Corporation (the "Issuer"). Wynnefield Capital Management, LLC, as the sole general partner of the Reporting Person, has an indirect beneficial ownership interest in the shares of Common Stock that the Reporting Person directly beneficially owns. Nelson Obus and Joshua Landes, as co-managing members of Wynnefield Capital Management, LLC, have an indirect beneficial ownership interest in the shares of Common Stock that the Reporting Person directly beneficially owns.

SEC source: 0001104659-23-124035 · tm2332330-1_4seq1.xml · nonDerivative · entry 1

WYNNEFIELD PARTNERS SMALL CAP VALUE LP I · CIK 0001251565 · 10% owner

WYNNEFIELD PARTNERS SMALL CAP VALUE LP · CIK 0000899083 · 10% owner

WYNNEFIELD SMALL CAP VALUE OFFSHORE FUND LTD · CIK 0001030806 · 10% owner

WYNNEFIELD CAPITAL MANAGEMENT LLC · CIK 0001056835 · 10% owner

WYNNEFIELD CAPITAL INC · CIK 0001251567 · 10% owner

Wynnefield Capital, Inc. Profit Sharing Plan · CIK 0001289453 · 10% owner

OBUS NELSON · CIK 0001017043 · 10% owner

LANDES JOSHUA · CIK 0001251568 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,265,535

F1 · ownership.direct: The Reporting Person directly beneficially owns 1,269,467 shares of common stock, $0.001 par value per share ("Common Stock") of Quest Resource Holding Corporation (the "Issuer"). Wynnefield Capital Management, LLC, as the sole general partner of the Reporting Person, has an indirect beneficial ownership interest in the shares of Common Stock that the Reporting Person directly beneficially owns. Nelson Obus and Joshua Landes, as co-managing members of Wynnefield Capital Management, LLC, have an indirect beneficial ownership interest in the shares of Common Stock that the Reporting Person directly beneficially owns.

SEC source: 0000921895-23-002679 · form412364002_11212023.xml · derivative · entry 4

Miller Ronald L. Jr. · CIK 0001560790 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 48,000

Underlying: Common Stock · 12,000 shares

Expires 2026-06-14

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F6 · derivative.exercise_date: The number of shares subject to the option vested and became exercisable on the last day of each month commencing on the last day of the month in which the option was granted.

SEC source: 0000921895-23-002679 · form412364002_11212023.xml · nonDerivative · entry 2

Miller Ronald L. Jr. · CIK 0001560790 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,600

F2 · price: This transaction was executed in multiple trades at prices ranging from $7.09 to $7.35. The price above reflects the weighted average sale price.

F3 · balance_after: These shares represent shares of common stock of the Issuer held by the Reporting Person.

SEC source: 0000921895-23-002679 · form412364002_11212023.xml · nonDerivative · entry 1

Miller Ronald L. Jr. · CIK 0001560790 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 14,600

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: These shares represent the number of shares exercised by the Reporting Person.

SEC source: 0000921895-23-002664 · form412364002hat_11162023.xml · nonDerivative · entry 1

Hatch S. Ray · CIK 0001663269 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 35,269

F1 · kind: The shares were acquired under the Issuer's employee stock purchase plan in a transaction that was exempt under both Rule 16b-3(d) and Rule 16b-3(c).

F2 · price: Pursuant to the terms of the Issuer's employee stock purchase plan, the price is equal to 85% of the lesser of (i) the market value of the shares on the offering date (May 15, 2023) and (ii) the market value of the shares on the purchase date of the offering which is the last business day of the applicable offering period.

SEC source: 0000921895-23-002663 · form412364002joh_11162023.xml · nonDerivative · entry 1

Johnston Brett Wade · CIK 0001950481 · Sr. VP of Finance and CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 21,069

F1 · kind: The shares were acquired under the Issuer's employee stock purchase plan in a transaction that was exempt under both Rule 16b-3(d) and Rule 16b-3(c).

F2 · price: Pursuant to the terms of the Issuer's employee stock purchase plan, the price is equal to 85% of the lesser of (i) the market value of the shares on the offering date (May 15, 2023) and (ii) the market value of the shares on the purchase date of the offering which is the last business day of the applicable offering period.

SEC source: 0001104659-23-113781 · tm2329715-1_4seq1.xml · nonDerivative · entry 1

WYNNEFIELD PARTNERS SMALL CAP VALUE LP I · CIK 0001251565 · 10% owner

WYNNEFIELD PARTNERS SMALL CAP VALUE LP · CIK 0000899083 · 10% owner

WYNNEFIELD SMALL CAP VALUE OFFSHORE FUND LTD · CIK 0001030806 · 10% owner

WYNNEFIELD CAPITAL MANAGEMENT LLC · CIK 0001056835 · 10% owner

WYNNEFIELD CAPITAL INC · CIK 0001251567 · 10% owner

Wynnefield Capital, Inc. Profit Sharing Plan · CIK 0001289453 · 10% owner

OBUS NELSON · CIK 0001017043 · 10% owner

LANDES JOSHUA · CIK 0001251568 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,265,435

F1 · ownership.direct: The Reporting Person directly beneficially owns 1,265,435 shares of common stock, $0.001 par value per share ("Common Stock") of Quest Resource Holding Corporation (the "Issuer"). Wynnefield Capital Management, LLC, as the sole general partner of the Reporting Person, has an indirect beneficial ownership interest in the shares of Common Stock that the Reporting Person directly beneficially owns. Nelson Obus and Joshua Landes, as co-managing members of Wynnefield Capital Management, LLC, have an indirect beneficial ownership interest in the shares of Common Stock that the Reporting Person directly beneficially owns.

SEC source: 0001104659-23-112947 · tm2329520-1_4seq1.xml · nonDerivative · entry 4

WYNNEFIELD PARTNERS SMALL CAP VALUE LP I · CIK 0001251565 · 10% owner

WYNNEFIELD PARTNERS SMALL CAP VALUE LP · CIK 0000899083 · 10% owner

WYNNEFIELD SMALL CAP VALUE OFFSHORE FUND LTD · CIK 0001030806 · 10% owner

WYNNEFIELD CAPITAL MANAGEMENT LLC · CIK 0001056835 · 10% owner

WYNNEFIELD CAPITAL INC · CIK 0001251567 · 10% owner

Wynnefield Capital, Inc. Profit Sharing Plan · CIK 0001289453 · 10% owner

OBUS NELSON · CIK 0001017043 · 10% owner

LANDES JOSHUA · CIK 0001251568 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnotes

Disclosed balance after: 1,418,338

F2 · price: The price reported in Column 4 is a weighted average price. These shares of Common Stock of the Issuer were purchased in multiple transactions at prices ranging from $7.23-$7.25. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares of Common Stock purchased at each separate price within the ranges set forth in this footnote (2) to this Form 4.

F3 · ownership.nature: The Reporting Person has an indirect beneficial ownership interest in 825,037 shares of Common Stock, which are directly beneficially owned by Wynnefield Partners Small Cap Value, L.P., as members of a group under Section 13(d) of the Securities Exchange Act of 1934, as amended (the "Exchange Act"). Wynnefield Partners Small Cap Value, L.P., which maintains offices at the same address as the Reporting Person, is filing this statement jointly with the Reporting Person. Wynnefield Capital Management, LLC, as the sole general partner of Wynnefield Partners Small Cap Value, L.P., has an indirect beneficial ownership interest in the shares of Common Stock that Wynnefield Partners Small Cap Value L.P. directly beneficially owns. Nelson Obus and Joshua Landes, as co-managing members of Wynnefield Capital Management, LLC, have an indirect beneficial ownership interest in the shares of Common Stock that Wynnefield Partners Small Cap Value, L.P. directly beneficially owns.

F4 · ownership.nature: The Reporting Person has an indirect beneficial ownership interest in 328,498 shares of Common Stock, which are directly beneficially owned by Wynnefield Small Cap Value Offshore Fund, Ltd., as members of a group under Section 13(d) of the Exchange Act. Wynnefield Small Cap Value Offshore Fund, Ltd., which maintains offices at the same address as the Reporting Person, is filing this statement jointly with the Reporting Person. Wynnefield Capital, Inc. as the sole investment manager of Wynnefield Small Cap Value Offshore Fund, Ltd., has an indirect beneficial ownership interest in the shares of Common Stock that Wynnefield Small Cap Value Offshore Fund, Ltd. directly beneficially owns. Nelson Obus and Joshua Landes, as principal executive officers of Wynnefield Capital, Inc., have an indirect beneficial ownership interest in the shares of Common Stock that Wynnefield Small Cap Value Offshore Fund, Ltd. directly beneficially owns.

F5 · ownership.nature: The Reporting Person has an indirect beneficial ownership interest in 264,803 shares of Common Stock, which are directly beneficially owned by Wynnefield Capital, Inc. Profit Sharing Plan, as members of a group under Section 13(d) of the Exchange Act. Wynnefield Capital, Inc. Profit Sharing Plan, which maintains offices at the same address as the Reporting Person, is filing this Form jointly with the Reporting Person. Mr. Obus and Mr. Landes, as co-trustees, has the power to vote and dispose of Wynnefield Capital, Inc. Profit Sharing Plan's investments in securities and has an indirect beneficial ownership interest in the shares of Common Stock that Wynnefield Capital, Inc. Profit Sharing Plan directly beneficially owns.

SEC source: 0001104659-23-112947 · tm2329520-1_4seq1.xml · nonDerivative · entry 3

WYNNEFIELD PARTNERS SMALL CAP VALUE LP I · CIK 0001251565 · 10% owner

WYNNEFIELD PARTNERS SMALL CAP VALUE LP · CIK 0000899083 · 10% owner

WYNNEFIELD SMALL CAP VALUE OFFSHORE FUND LTD · CIK 0001030806 · 10% owner

WYNNEFIELD CAPITAL MANAGEMENT LLC · CIK 0001056835 · 10% owner

WYNNEFIELD CAPITAL INC · CIK 0001251567 · 10% owner

Wynnefield Capital, Inc. Profit Sharing Plan · CIK 0001289453 · 10% owner

OBUS NELSON · CIK 0001017043 · 10% owner

LANDES JOSHUA · CIK 0001251568 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,264,828

F2 · price: The price reported in Column 4 is a weighted average price. These shares of Common Stock of the Issuer were purchased in multiple transactions at prices ranging from $7.23-$7.25. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares of Common Stock purchased at each separate price within the ranges set forth in this footnote (2) to this Form 4.

F1 · ownership.direct: The Reporting Person directly beneficially owns 1,264,828 shares of common stock, $0.001 par value per share ("Common Stock") of Quest Resource Holding Corporation (the "Issuer"). Wynnefield Capital Management, LLC, as the sole general partner of the Reporting Person, has an indirect beneficial ownership interest in the shares of Common Stock that the Reporting Person directly beneficially owns. Nelson Obus and Joshua Landes, as co-managing members of Wynnefield Capital Management, LLC, have an indirect beneficial ownership interest in the shares of Common Stock that the Reporting Person directly beneficially owns.

SEC source: 0001104659-23-112947 · tm2329520-1_4seq1.xml · nonDerivative · entry 2

WYNNEFIELD PARTNERS SMALL CAP VALUE LP I · CIK 0001251565 · 10% owner

WYNNEFIELD PARTNERS SMALL CAP VALUE LP · CIK 0000899083 · 10% owner

WYNNEFIELD SMALL CAP VALUE OFFSHORE FUND LTD · CIK 0001030806 · 10% owner

WYNNEFIELD CAPITAL MANAGEMENT LLC · CIK 0001056835 · 10% owner

WYNNEFIELD CAPITAL INC · CIK 0001251567 · 10% owner

Wynnefield Capital, Inc. Profit Sharing Plan · CIK 0001289453 · 10% owner

OBUS NELSON · CIK 0001017043 · 10% owner

LANDES JOSHUA · CIK 0001251568 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnotes

Disclosed balance after: 1,415,583

F3 · ownership.nature: The Reporting Person has an indirect beneficial ownership interest in 825,037 shares of Common Stock, which are directly beneficially owned by Wynnefield Partners Small Cap Value, L.P., as members of a group under Section 13(d) of the Securities Exchange Act of 1934, as amended (the "Exchange Act"). Wynnefield Partners Small Cap Value, L.P., which maintains offices at the same address as the Reporting Person, is filing this statement jointly with the Reporting Person. Wynnefield Capital Management, LLC, as the sole general partner of Wynnefield Partners Small Cap Value, L.P., has an indirect beneficial ownership interest in the shares of Common Stock that Wynnefield Partners Small Cap Value L.P. directly beneficially owns. Nelson Obus and Joshua Landes, as co-managing members of Wynnefield Capital Management, LLC, have an indirect beneficial ownership interest in the shares of Common Stock that Wynnefield Partners Small Cap Value, L.P. directly beneficially owns.

F4 · ownership.nature: The Reporting Person has an indirect beneficial ownership interest in 328,498 shares of Common Stock, which are directly beneficially owned by Wynnefield Small Cap Value Offshore Fund, Ltd., as members of a group under Section 13(d) of the Exchange Act. Wynnefield Small Cap Value Offshore Fund, Ltd., which maintains offices at the same address as the Reporting Person, is filing this statement jointly with the Reporting Person. Wynnefield Capital, Inc. as the sole investment manager of Wynnefield Small Cap Value Offshore Fund, Ltd., has an indirect beneficial ownership interest in the shares of Common Stock that Wynnefield Small Cap Value Offshore Fund, Ltd. directly beneficially owns. Nelson Obus and Joshua Landes, as principal executive officers of Wynnefield Capital, Inc., have an indirect beneficial ownership interest in the shares of Common Stock that Wynnefield Small Cap Value Offshore Fund, Ltd. directly beneficially owns.

F5 · ownership.nature: The Reporting Person has an indirect beneficial ownership interest in 264,803 shares of Common Stock, which are directly beneficially owned by Wynnefield Capital, Inc. Profit Sharing Plan, as members of a group under Section 13(d) of the Exchange Act. Wynnefield Capital, Inc. Profit Sharing Plan, which maintains offices at the same address as the Reporting Person, is filing this Form jointly with the Reporting Person. Mr. Obus and Mr. Landes, as co-trustees, has the power to vote and dispose of Wynnefield Capital, Inc. Profit Sharing Plan's investments in securities and has an indirect beneficial ownership interest in the shares of Common Stock that Wynnefield Capital, Inc. Profit Sharing Plan directly beneficially owns.

SEC source: 0001104659-23-112947 · tm2329520-1_4seq1.xml · nonDerivative · entry 1

WYNNEFIELD PARTNERS SMALL CAP VALUE LP I · CIK 0001251565 · 10% owner

WYNNEFIELD PARTNERS SMALL CAP VALUE LP · CIK 0000899083 · 10% owner

WYNNEFIELD SMALL CAP VALUE OFFSHORE FUND LTD · CIK 0001030806 · 10% owner

WYNNEFIELD CAPITAL MANAGEMENT LLC · CIK 0001056835 · 10% owner

WYNNEFIELD CAPITAL INC · CIK 0001251567 · 10% owner

Wynnefield Capital, Inc. Profit Sharing Plan · CIK 0001289453 · 10% owner

OBUS NELSON · CIK 0001017043 · 10% owner

LANDES JOSHUA · CIK 0001251568 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,262,203

F1 · ownership.direct: The Reporting Person directly beneficially owns 1,264,828 shares of common stock, $0.001 par value per share ("Common Stock") of Quest Resource Holding Corporation (the "Issuer"). Wynnefield Capital Management, LLC, as the sole general partner of the Reporting Person, has an indirect beneficial ownership interest in the shares of Common Stock that the Reporting Person directly beneficially owns. Nelson Obus and Joshua Landes, as co-managing members of Wynnefield Capital Management, LLC, have an indirect beneficial ownership interest in the shares of Common Stock that the Reporting Person directly beneficially owns.