WHD

SEC source: 0001104659-19-017224 · a4.xml · nonDerivative · entry 3

CADENT ENERGY PARTNERS II LP · CIK 0001422354 · Director · 10% owner

Cadent Energy Partners II-GP, LP · CIK 0001701703 · Director · 10% owner

Cadent Energy Partners, LLC · CIK 0001701704 · Director · 10% owner

CEP II-GP, LLC · CIK 0001701711 · Director · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,264

SEC source: 0001104659-19-017224 · a4.xml · nonDerivative · entry 2

CADENT ENERGY PARTNERS II LP · CIK 0001422354 · Director · 10% owner

Cadent Energy Partners II-GP, LP · CIK 0001701703 · Director · 10% owner

Cadent Energy Partners, LLC · CIK 0001701704 · Director · 10% owner

CEP II-GP, LLC · CIK 0001701711 · Director · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,955,264

F2 · kind: These securities were acquired in connection with the closing of the Offering. In connection with the redemption of Units, as described below, the Reporting Person acquired a corresponding number of shares of Class A Common Stock.

F2 · price: These securities were acquired in connection with the closing of the Offering. In connection with the redemption of Units, as described below, the Reporting Person acquired a corresponding number of shares of Class A Common Stock.

SEC source: 0001104659-19-017224 · a4.xml · nonDerivative · entry 1

CADENT ENERGY PARTNERS II LP · CIK 0001422354 · Director · 10% owner

Cadent Energy Partners II-GP, LP · CIK 0001701703 · Director · 10% owner

Cadent Energy Partners, LLC · CIK 0001701704 · Director · 10% owner

CEP II-GP, LLC · CIK 0001701711 · Director · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,347,466

F1 · price: These securities were disposed of in connection with the closing of the Issuer's most recent secondary public offering on March 21, 2019 (the "Offering"). In connection with the redemption of Units, as described below, the Reporting Person disposed of a corresponding number of shares of Class B Common Stock, which shares were cancelled by the Issuer.

SEC source: 0001104659-19-017217 · a4.xml · nonDerivative · entry 1

Semple Alan · CIK 0001701710 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 18,064

SEC source: 0001104659-19-017219 · a4.xml · derivative · entry 4

MCGOVERN MICHAEL Y · CIK 0001259039 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 56,018

Underlying: Class A Common Stock · 17,391 shares

Expires not disclosed

F3 · security: "Units" mean ownership interests in Cactus Wellhead, LLC ("Cactus LLC"). The Issuer is the sole managing member of Cactus LLC.

F4 · derivative.exercise_price: The first amended and restated limited liability company operating agreement of Cactus LLC provides the holders of Units with certain rights to cause Cactus LLC to acquire all or at least a minimum portion of their Units for, at Cactus LLC's election, (x) shares of Class A Common Stock at a redemption ratio of one share of Class A Common Stock for each Unit redeemed, subject to conversion rate adjustments for stock splits, stock dividends and reclassification and other similar transactions, or (y) an equivalent amount of cash (the "Redmeption Right"). In connection with the Offering, the Reporting Person exercised his Redemption Right with respect to Units owned by him.

F5 · derivative.exercise_price: Upon the exercise of the Redemption Right, the Issuer (instead of Cactus LLC) has the right (the "Call Right") to acquire each tendered Unit directly from the exchanging Unit holder for, at its election, (x) shares of Class A Common Stock at a redemption ratio of one share of Class A Common Stock for each Unit redeemed, subject to conversion rate adjustments for stock splits, stock dividends and reclassification and other similar transactions, or (y) an equivalent amount of cash. In connection with the Offering, the Issuer exercised its Call Right and acquired the tendered Units (and a corresponding number of shares of Class B Common Stock) in return for shares of Class A Common Stock.

F1 · kind: These securities were disposed of in connection with the closing of the Issuer's most recent secondary public offering on March 21, 2019 (the "Offering"). In connection with the redemption of Units, as described below, the Reporting Person disposed of a corresponding number of shares of Class B Common Stock, which shares were cancelled by the Issuer.

F6 · price: The Units were redeemed for Class A Common Stock on March 21, 2019 in connection with the Offering.

F4 · derivative.exercise_date: The first amended and restated limited liability company operating agreement of Cactus LLC provides the holders of Units with certain rights to cause Cactus LLC to acquire all or at least a minimum portion of their Units for, at Cactus LLC's election, (x) shares of Class A Common Stock at a redemption ratio of one share of Class A Common Stock for each Unit redeemed, subject to conversion rate adjustments for stock splits, stock dividends and reclassification and other similar transactions, or (y) an equivalent amount of cash (the "Redmeption Right"). In connection with the Offering, the Reporting Person exercised his Redemption Right with respect to Units owned by him.

F5 · derivative.exercise_date: Upon the exercise of the Redemption Right, the Issuer (instead of Cactus LLC) has the right (the "Call Right") to acquire each tendered Unit directly from the exchanging Unit holder for, at its election, (x) shares of Class A Common Stock at a redemption ratio of one share of Class A Common Stock for each Unit redeemed, subject to conversion rate adjustments for stock splits, stock dividends and reclassification and other similar transactions, or (y) an equivalent amount of cash. In connection with the Offering, the Issuer exercised its Call Right and acquired the tendered Units (and a corresponding number of shares of Class B Common Stock) in return for shares of Class A Common Stock.

F4 · derivative.expiration_date: The first amended and restated limited liability company operating agreement of Cactus LLC provides the holders of Units with certain rights to cause Cactus LLC to acquire all or at least a minimum portion of their Units for, at Cactus LLC's election, (x) shares of Class A Common Stock at a redemption ratio of one share of Class A Common Stock for each Unit redeemed, subject to conversion rate adjustments for stock splits, stock dividends and reclassification and other similar transactions, or (y) an equivalent amount of cash (the "Redmeption Right"). In connection with the Offering, the Reporting Person exercised his Redemption Right with respect to Units owned by him.

F5 · derivative.expiration_date: Upon the exercise of the Redemption Right, the Issuer (instead of Cactus LLC) has the right (the "Call Right") to acquire each tendered Unit directly from the exchanging Unit holder for, at its election, (x) shares of Class A Common Stock at a redemption ratio of one share of Class A Common Stock for each Unit redeemed, subject to conversion rate adjustments for stock splits, stock dividends and reclassification and other similar transactions, or (y) an equivalent amount of cash. In connection with the Offering, the Issuer exercised its Call Right and acquired the tendered Units (and a corresponding number of shares of Class B Common Stock) in return for shares of Class A Common Stock.

SEC source: 0001104659-19-017219 · a4.xml · nonDerivative · entry 3

MCGOVERN MICHAEL Y · CIK 0001259039 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,264

SEC source: 0001104659-19-017219 · a4.xml · nonDerivative · entry 2

MCGOVERN MICHAEL Y · CIK 0001259039 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 22,655

F2 · kind: These securities were acquired in connection with the closing of the Offering. In connection with the redemption of Units, as described below, the Reporting Person acquired a corresponding number of shares of Class A Common Stock.

F2 · price: These securities were acquired in connection with the closing of the Offering. In connection with the redemption of Units, as described below, the Reporting Person acquired a corresponding number of shares of Class A Common Stock.

SEC source: 0001104659-19-017219 · a4.xml · nonDerivative · entry 1

MCGOVERN MICHAEL Y · CIK 0001259039 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 56,018

F1 · price: These securities were disposed of in connection with the closing of the Issuer's most recent secondary public offering on March 21, 2019 (the "Offering"). In connection with the redemption of Units, as described below, the Reporting Person disposed of a corresponding number of shares of Class B Common Stock, which shares were cancelled by the Issuer.

SEC source: 0001104659-19-017218 · a4.xml · nonDerivative · entry 1

Rosenthal Gary L · CIK 0001198825 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 10,237

SEC source: 0001104659-19-017237 · a4.xml · derivative · entry 14

Bender Scott · CIK 0001701688 · Director · President and CEO · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 20,674,525

Underlying: Class A Common Stock · 362,492 shares

Expires not disclosed

F7 · security: "Units" mean ownership interests in Cactus Wellhead, LLC ("Cactus LLC"). The Issuer is the sole managing member of Cactus LLC.

F8 · derivative.exercise_price: The first amended and restated limited liability company operating agreement of Cactus LLC provides the holders of Units with certain rights to cause Cactus LLC to acquire all or at least a minimum portion of their Units for, at Cactus LLC's election, (x) shares of Class A Common Stock at a redemption ratio of one share of Class A Common Stock for each Unit redeemed, subject to conversion rate adjustments for stock splits, stock dividends and reclassification and other similar transactions, or (y) an equivalent amount of cash (the "Redmeption Right"). In connection with the Offering, the Reporting Person exercised his Redemption Right with respect to Units owned by him.

F9 · derivative.exercise_price: Upon the exercise of the Redemption Right, the Issuer (instead of Cactus LLC) has the right to acquire each tendered Unit directly from the exchanging Unit holder for, at its election, (x) shares of Class A Common Stock at a redemption ratio of one share of Class A Common Stock for each Unit redeemed, subject to conversion rate adjustments for stock splits, stock dividends and reclassification and other similar transactions, or (y) an equivalent amount of cash. In connection with the Offering, the Issuer exercised its Call Right and acquired the tendered Units (and a corresponding number of shares of Class B Common Stock) in return for Shares of Class A Common Stock.

F3 · kind: In connection with the Offering, Cactus Enterprises distributed Class B Common Stock and Units to certain of its members other than those controlled by the Reporting Person.

F10 · price: The Units were redeemed for Class A Common Stock on March 21, 2019 in connection with the Offering.

F8 · derivative.exercise_date: The first amended and restated limited liability company operating agreement of Cactus LLC provides the holders of Units with certain rights to cause Cactus LLC to acquire all or at least a minimum portion of their Units for, at Cactus LLC's election, (x) shares of Class A Common Stock at a redemption ratio of one share of Class A Common Stock for each Unit redeemed, subject to conversion rate adjustments for stock splits, stock dividends and reclassification and other similar transactions, or (y) an equivalent amount of cash (the "Redmeption Right"). In connection with the Offering, the Reporting Person exercised his Redemption Right with respect to Units owned by him.

F9 · derivative.exercise_date: Upon the exercise of the Redemption Right, the Issuer (instead of Cactus LLC) has the right to acquire each tendered Unit directly from the exchanging Unit holder for, at its election, (x) shares of Class A Common Stock at a redemption ratio of one share of Class A Common Stock for each Unit redeemed, subject to conversion rate adjustments for stock splits, stock dividends and reclassification and other similar transactions, or (y) an equivalent amount of cash. In connection with the Offering, the Issuer exercised its Call Right and acquired the tendered Units (and a corresponding number of shares of Class B Common Stock) in return for Shares of Class A Common Stock.

F8 · derivative.expiration_date: The first amended and restated limited liability company operating agreement of Cactus LLC provides the holders of Units with certain rights to cause Cactus LLC to acquire all or at least a minimum portion of their Units for, at Cactus LLC's election, (x) shares of Class A Common Stock at a redemption ratio of one share of Class A Common Stock for each Unit redeemed, subject to conversion rate adjustments for stock splits, stock dividends and reclassification and other similar transactions, or (y) an equivalent amount of cash (the "Redmeption Right"). In connection with the Offering, the Reporting Person exercised his Redemption Right with respect to Units owned by him.

F9 · derivative.expiration_date: Upon the exercise of the Redemption Right, the Issuer (instead of Cactus LLC) has the right to acquire each tendered Unit directly from the exchanging Unit holder for, at its election, (x) shares of Class A Common Stock at a redemption ratio of one share of Class A Common Stock for each Unit redeemed, subject to conversion rate adjustments for stock splits, stock dividends and reclassification and other similar transactions, or (y) an equivalent amount of cash. In connection with the Offering, the Issuer exercised its Call Right and acquired the tendered Units (and a corresponding number of shares of Class B Common Stock) in return for Shares of Class A Common Stock.

F4 · ownership.nature: The securities reported herein are directly owned by Cactus Enterprises. By reason of the provisions of Rule 16a-1 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), the Reporting Person may be deemed to have an indirect pecuniary interest in the securities held directly by Cactus Enterprises through his ownership interest in Cactus Enterprises. In accordance with Instruction 4(b)(iv), the entire amount of the securities held by Cactus Enterprises is reported herein. The Reporting Person disclaims beneficial ownership of any securities that he does not directly own, except to the extent of his indirect pecuniary interest therein. This report shall not be deemed an admission that the Reporting Person is a member of a group or the beneficial owner of any securities not directly owned by the Reporting Person.

F5 · ownership.nature: Following all of the transactions reported herein, the Reporting Person is deemed to beneficially own 18,738,886 shares of Class B Common Stock and 18,738,886 Units owned by Cactus Enterprises.

SEC source: 0001104659-19-017237 · a4.xml · derivative · entry 13

Bender Scott · CIK 0001701688 · Director · President and CEO · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 19,234,990

Underlying: Class A Common Stock · 1,802,027 shares

Expires not disclosed

F7 · security: "Units" mean ownership interests in Cactus Wellhead, LLC ("Cactus LLC"). The Issuer is the sole managing member of Cactus LLC.

F8 · derivative.exercise_price: The first amended and restated limited liability company operating agreement of Cactus LLC provides the holders of Units with certain rights to cause Cactus LLC to acquire all or at least a minimum portion of their Units for, at Cactus LLC's election, (x) shares of Class A Common Stock at a redemption ratio of one share of Class A Common Stock for each Unit redeemed, subject to conversion rate adjustments for stock splits, stock dividends and reclassification and other similar transactions, or (y) an equivalent amount of cash (the "Redmeption Right"). In connection with the Offering, the Reporting Person exercised his Redemption Right with respect to Units owned by him.

F9 · derivative.exercise_price: Upon the exercise of the Redemption Right, the Issuer (instead of Cactus LLC) has the right to acquire each tendered Unit directly from the exchanging Unit holder for, at its election, (x) shares of Class A Common Stock at a redemption ratio of one share of Class A Common Stock for each Unit redeemed, subject to conversion rate adjustments for stock splits, stock dividends and reclassification and other similar transactions, or (y) an equivalent amount of cash. In connection with the Offering, the Issuer exercised its Call Right and acquired the tendered Units (and a corresponding number of shares of Class B Common Stock) in return for Shares of Class A Common Stock.

F2 · kind: These securities were disposed of in connection with the closing of the Offering. In connection with the redemption of Units, as described below, BIC and SJB BIC LP disposed of a corresponding number of shares of Class B Common Stock, which shares were cancelled by the Issuer.

F10 · price: The Units were redeemed for Class A Common Stock on March 21, 2019 in connection with the Offering.

F8 · derivative.exercise_date: The first amended and restated limited liability company operating agreement of Cactus LLC provides the holders of Units with certain rights to cause Cactus LLC to acquire all or at least a minimum portion of their Units for, at Cactus LLC's election, (x) shares of Class A Common Stock at a redemption ratio of one share of Class A Common Stock for each Unit redeemed, subject to conversion rate adjustments for stock splits, stock dividends and reclassification and other similar transactions, or (y) an equivalent amount of cash (the "Redmeption Right"). In connection with the Offering, the Reporting Person exercised his Redemption Right with respect to Units owned by him.

F9 · derivative.exercise_date: Upon the exercise of the Redemption Right, the Issuer (instead of Cactus LLC) has the right to acquire each tendered Unit directly from the exchanging Unit holder for, at its election, (x) shares of Class A Common Stock at a redemption ratio of one share of Class A Common Stock for each Unit redeemed, subject to conversion rate adjustments for stock splits, stock dividends and reclassification and other similar transactions, or (y) an equivalent amount of cash. In connection with the Offering, the Issuer exercised its Call Right and acquired the tendered Units (and a corresponding number of shares of Class B Common Stock) in return for Shares of Class A Common Stock.

F8 · derivative.expiration_date: The first amended and restated limited liability company operating agreement of Cactus LLC provides the holders of Units with certain rights to cause Cactus LLC to acquire all or at least a minimum portion of their Units for, at Cactus LLC's election, (x) shares of Class A Common Stock at a redemption ratio of one share of Class A Common Stock for each Unit redeemed, subject to conversion rate adjustments for stock splits, stock dividends and reclassification and other similar transactions, or (y) an equivalent amount of cash (the "Redmeption Right"). In connection with the Offering, the Reporting Person exercised his Redemption Right with respect to Units owned by him.

F9 · derivative.expiration_date: Upon the exercise of the Redemption Right, the Issuer (instead of Cactus LLC) has the right to acquire each tendered Unit directly from the exchanging Unit holder for, at its election, (x) shares of Class A Common Stock at a redemption ratio of one share of Class A Common Stock for each Unit redeemed, subject to conversion rate adjustments for stock splits, stock dividends and reclassification and other similar transactions, or (y) an equivalent amount of cash. In connection with the Offering, the Issuer exercised its Call Right and acquired the tendered Units (and a corresponding number of shares of Class B Common Stock) in return for Shares of Class A Common Stock.

F4 · ownership.nature: The securities reported herein are directly owned by Cactus Enterprises. By reason of the provisions of Rule 16a-1 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), the Reporting Person may be deemed to have an indirect pecuniary interest in the securities held directly by Cactus Enterprises through his ownership interest in Cactus Enterprises. In accordance with Instruction 4(b)(iv), the entire amount of the securities held by Cactus Enterprises is reported herein. The Reporting Person disclaims beneficial ownership of any securities that he does not directly own, except to the extent of his indirect pecuniary interest therein. This report shall not be deemed an admission that the Reporting Person is a member of a group or the beneficial owner of any securities not directly owned by the Reporting Person.

F5 · ownership.nature: Following all of the transactions reported herein, the Reporting Person is deemed to beneficially own 18,738,886 shares of Class B Common Stock and 18,738,886 Units owned by Cactus Enterprises.

SEC source: 0001104659-19-017237 · a4.xml · derivative · entry 12

Bender Scott · CIK 0001701688 · Director · President and CEO · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 21,037,017

Underlying: Class A Common Stock · 1,802,027 shares

Expires not disclosed

F7 · security: "Units" mean ownership interests in Cactus Wellhead, LLC ("Cactus LLC"). The Issuer is the sole managing member of Cactus LLC.

F8 · derivative.exercise_price: The first amended and restated limited liability company operating agreement of Cactus LLC provides the holders of Units with certain rights to cause Cactus LLC to acquire all or at least a minimum portion of their Units for, at Cactus LLC's election, (x) shares of Class A Common Stock at a redemption ratio of one share of Class A Common Stock for each Unit redeemed, subject to conversion rate adjustments for stock splits, stock dividends and reclassification and other similar transactions, or (y) an equivalent amount of cash (the "Redmeption Right"). In connection with the Offering, the Reporting Person exercised his Redemption Right with respect to Units owned by him.

F9 · derivative.exercise_price: Upon the exercise of the Redemption Right, the Issuer (instead of Cactus LLC) has the right to acquire each tendered Unit directly from the exchanging Unit holder for, at its election, (x) shares of Class A Common Stock at a redemption ratio of one share of Class A Common Stock for each Unit redeemed, subject to conversion rate adjustments for stock splits, stock dividends and reclassification and other similar transactions, or (y) an equivalent amount of cash. In connection with the Offering, the Issuer exercised its Call Right and acquired the tendered Units (and a corresponding number of shares of Class B Common Stock) in return for Shares of Class A Common Stock.

F1 · kind: These securities were acquired in connection with the closing of the Issuer's most recent secondary public offering on March 21, 2019 (the "Offering"). In connection with the Offering, Bender Investment Company, a Nevada corporation ("BIC"), and SJB BIC LP, a Texas limited partnership, both of which are controlled by the Reporting Person, redeemed a portion of their ownership interests in Cactus WH Enterprises, LLC ("Cactus Enterprises") pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises. In connection with the redemptions of interests in Cactus Enterprises, Cactus Enterprises distributed to BIC, 1,802,027 Units (as defined below) and a corresponding number of shares of Class B Common Stock of the Issuer. In addition, Cactus Enterprises distributed to SJB BIC LP 133,612 Units and a corresponding number of shares of Class B Common Stock.

F8 · price: The first amended and restated limited liability company operating agreement of Cactus LLC provides the holders of Units with certain rights to cause Cactus LLC to acquire all or at least a minimum portion of their Units for, at Cactus LLC's election, (x) shares of Class A Common Stock at a redemption ratio of one share of Class A Common Stock for each Unit redeemed, subject to conversion rate adjustments for stock splits, stock dividends and reclassification and other similar transactions, or (y) an equivalent amount of cash (the "Redmeption Right"). In connection with the Offering, the Reporting Person exercised his Redemption Right with respect to Units owned by him.

F9 · price: Upon the exercise of the Redemption Right, the Issuer (instead of Cactus LLC) has the right to acquire each tendered Unit directly from the exchanging Unit holder for, at its election, (x) shares of Class A Common Stock at a redemption ratio of one share of Class A Common Stock for each Unit redeemed, subject to conversion rate adjustments for stock splits, stock dividends and reclassification and other similar transactions, or (y) an equivalent amount of cash. In connection with the Offering, the Issuer exercised its Call Right and acquired the tendered Units (and a corresponding number of shares of Class B Common Stock) in return for Shares of Class A Common Stock.

F8 · derivative.exercise_date: The first amended and restated limited liability company operating agreement of Cactus LLC provides the holders of Units with certain rights to cause Cactus LLC to acquire all or at least a minimum portion of their Units for, at Cactus LLC's election, (x) shares of Class A Common Stock at a redemption ratio of one share of Class A Common Stock for each Unit redeemed, subject to conversion rate adjustments for stock splits, stock dividends and reclassification and other similar transactions, or (y) an equivalent amount of cash (the "Redmeption Right"). In connection with the Offering, the Reporting Person exercised his Redemption Right with respect to Units owned by him.

F9 · derivative.exercise_date: Upon the exercise of the Redemption Right, the Issuer (instead of Cactus LLC) has the right to acquire each tendered Unit directly from the exchanging Unit holder for, at its election, (x) shares of Class A Common Stock at a redemption ratio of one share of Class A Common Stock for each Unit redeemed, subject to conversion rate adjustments for stock splits, stock dividends and reclassification and other similar transactions, or (y) an equivalent amount of cash. In connection with the Offering, the Issuer exercised its Call Right and acquired the tendered Units (and a corresponding number of shares of Class B Common Stock) in return for Shares of Class A Common Stock.

F8 · derivative.expiration_date: The first amended and restated limited liability company operating agreement of Cactus LLC provides the holders of Units with certain rights to cause Cactus LLC to acquire all or at least a minimum portion of their Units for, at Cactus LLC's election, (x) shares of Class A Common Stock at a redemption ratio of one share of Class A Common Stock for each Unit redeemed, subject to conversion rate adjustments for stock splits, stock dividends and reclassification and other similar transactions, or (y) an equivalent amount of cash (the "Redmeption Right"). In connection with the Offering, the Reporting Person exercised his Redemption Right with respect to Units owned by him.

F9 · derivative.expiration_date: Upon the exercise of the Redemption Right, the Issuer (instead of Cactus LLC) has the right to acquire each tendered Unit directly from the exchanging Unit holder for, at its election, (x) shares of Class A Common Stock at a redemption ratio of one share of Class A Common Stock for each Unit redeemed, subject to conversion rate adjustments for stock splits, stock dividends and reclassification and other similar transactions, or (y) an equivalent amount of cash. In connection with the Offering, the Issuer exercised its Call Right and acquired the tendered Units (and a corresponding number of shares of Class B Common Stock) in return for Shares of Class A Common Stock.

F4 · ownership.nature: The securities reported herein are directly owned by Cactus Enterprises. By reason of the provisions of Rule 16a-1 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), the Reporting Person may be deemed to have an indirect pecuniary interest in the securities held directly by Cactus Enterprises through his ownership interest in Cactus Enterprises. In accordance with Instruction 4(b)(iv), the entire amount of the securities held by Cactus Enterprises is reported herein. The Reporting Person disclaims beneficial ownership of any securities that he does not directly own, except to the extent of his indirect pecuniary interest therein. This report shall not be deemed an admission that the Reporting Person is a member of a group or the beneficial owner of any securities not directly owned by the Reporting Person.

F5 · ownership.nature: Following all of the transactions reported herein, the Reporting Person is deemed to beneficially own 18,738,886 shares of Class B Common Stock and 18,738,886 Units owned by Cactus Enterprises.

SEC source: 0001104659-19-017237 · a4.xml · derivative · entry 11

Bender Scott · CIK 0001701688 · Director · President and CEO · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 20,903,405

Underlying: Class A Common Stock · 133,612 shares

Expires not disclosed

F7 · security: "Units" mean ownership interests in Cactus Wellhead, LLC ("Cactus LLC"). The Issuer is the sole managing member of Cactus LLC.

F8 · derivative.exercise_price: The first amended and restated limited liability company operating agreement of Cactus LLC provides the holders of Units with certain rights to cause Cactus LLC to acquire all or at least a minimum portion of their Units for, at Cactus LLC's election, (x) shares of Class A Common Stock at a redemption ratio of one share of Class A Common Stock for each Unit redeemed, subject to conversion rate adjustments for stock splits, stock dividends and reclassification and other similar transactions, or (y) an equivalent amount of cash (the "Redmeption Right"). In connection with the Offering, the Reporting Person exercised his Redemption Right with respect to Units owned by him.

F9 · derivative.exercise_price: Upon the exercise of the Redemption Right, the Issuer (instead of Cactus LLC) has the right to acquire each tendered Unit directly from the exchanging Unit holder for, at its election, (x) shares of Class A Common Stock at a redemption ratio of one share of Class A Common Stock for each Unit redeemed, subject to conversion rate adjustments for stock splits, stock dividends and reclassification and other similar transactions, or (y) an equivalent amount of cash. In connection with the Offering, the Issuer exercised its Call Right and acquired the tendered Units (and a corresponding number of shares of Class B Common Stock) in return for Shares of Class A Common Stock.

F2 · kind: These securities were disposed of in connection with the closing of the Offering. In connection with the redemption of Units, as described below, BIC and SJB BIC LP disposed of a corresponding number of shares of Class B Common Stock, which shares were cancelled by the Issuer.

F10 · price: The Units were redeemed for Class A Common Stock on March 21, 2019 in connection with the Offering.

F8 · derivative.exercise_date: The first amended and restated limited liability company operating agreement of Cactus LLC provides the holders of Units with certain rights to cause Cactus LLC to acquire all or at least a minimum portion of their Units for, at Cactus LLC's election, (x) shares of Class A Common Stock at a redemption ratio of one share of Class A Common Stock for each Unit redeemed, subject to conversion rate adjustments for stock splits, stock dividends and reclassification and other similar transactions, or (y) an equivalent amount of cash (the "Redmeption Right"). In connection with the Offering, the Reporting Person exercised his Redemption Right with respect to Units owned by him.

F9 · derivative.exercise_date: Upon the exercise of the Redemption Right, the Issuer (instead of Cactus LLC) has the right to acquire each tendered Unit directly from the exchanging Unit holder for, at its election, (x) shares of Class A Common Stock at a redemption ratio of one share of Class A Common Stock for each Unit redeemed, subject to conversion rate adjustments for stock splits, stock dividends and reclassification and other similar transactions, or (y) an equivalent amount of cash. In connection with the Offering, the Issuer exercised its Call Right and acquired the tendered Units (and a corresponding number of shares of Class B Common Stock) in return for Shares of Class A Common Stock.

F8 · derivative.expiration_date: The first amended and restated limited liability company operating agreement of Cactus LLC provides the holders of Units with certain rights to cause Cactus LLC to acquire all or at least a minimum portion of their Units for, at Cactus LLC's election, (x) shares of Class A Common Stock at a redemption ratio of one share of Class A Common Stock for each Unit redeemed, subject to conversion rate adjustments for stock splits, stock dividends and reclassification and other similar transactions, or (y) an equivalent amount of cash (the "Redmeption Right"). In connection with the Offering, the Reporting Person exercised his Redemption Right with respect to Units owned by him.

F9 · derivative.expiration_date: Upon the exercise of the Redemption Right, the Issuer (instead of Cactus LLC) has the right to acquire each tendered Unit directly from the exchanging Unit holder for, at its election, (x) shares of Class A Common Stock at a redemption ratio of one share of Class A Common Stock for each Unit redeemed, subject to conversion rate adjustments for stock splits, stock dividends and reclassification and other similar transactions, or (y) an equivalent amount of cash. In connection with the Offering, the Issuer exercised its Call Right and acquired the tendered Units (and a corresponding number of shares of Class B Common Stock) in return for Shares of Class A Common Stock.

F4 · ownership.nature: The securities reported herein are directly owned by Cactus Enterprises. By reason of the provisions of Rule 16a-1 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), the Reporting Person may be deemed to have an indirect pecuniary interest in the securities held directly by Cactus Enterprises through his ownership interest in Cactus Enterprises. In accordance with Instruction 4(b)(iv), the entire amount of the securities held by Cactus Enterprises is reported herein. The Reporting Person disclaims beneficial ownership of any securities that he does not directly own, except to the extent of his indirect pecuniary interest therein. This report shall not be deemed an admission that the Reporting Person is a member of a group or the beneficial owner of any securities not directly owned by the Reporting Person.

F5 · ownership.nature: Following all of the transactions reported herein, the Reporting Person is deemed to beneficially own 18,738,886 shares of Class B Common Stock and 18,738,886 Units owned by Cactus Enterprises.

SEC source: 0001104659-19-017237 · a4.xml · derivative · entry 10

Bender Scott · CIK 0001701688 · Director · President and CEO · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 21,037,017

Underlying: Class A Common Stock · 133,612 shares

Expires not disclosed

F7 · security: "Units" mean ownership interests in Cactus Wellhead, LLC ("Cactus LLC"). The Issuer is the sole managing member of Cactus LLC.

F8 · derivative.exercise_price: The first amended and restated limited liability company operating agreement of Cactus LLC provides the holders of Units with certain rights to cause Cactus LLC to acquire all or at least a minimum portion of their Units for, at Cactus LLC's election, (x) shares of Class A Common Stock at a redemption ratio of one share of Class A Common Stock for each Unit redeemed, subject to conversion rate adjustments for stock splits, stock dividends and reclassification and other similar transactions, or (y) an equivalent amount of cash (the "Redmeption Right"). In connection with the Offering, the Reporting Person exercised his Redemption Right with respect to Units owned by him.

F9 · derivative.exercise_price: Upon the exercise of the Redemption Right, the Issuer (instead of Cactus LLC) has the right to acquire each tendered Unit directly from the exchanging Unit holder for, at its election, (x) shares of Class A Common Stock at a redemption ratio of one share of Class A Common Stock for each Unit redeemed, subject to conversion rate adjustments for stock splits, stock dividends and reclassification and other similar transactions, or (y) an equivalent amount of cash. In connection with the Offering, the Issuer exercised its Call Right and acquired the tendered Units (and a corresponding number of shares of Class B Common Stock) in return for Shares of Class A Common Stock.

F1 · kind: These securities were acquired in connection with the closing of the Issuer's most recent secondary public offering on March 21, 2019 (the "Offering"). In connection with the Offering, Bender Investment Company, a Nevada corporation ("BIC"), and SJB BIC LP, a Texas limited partnership, both of which are controlled by the Reporting Person, redeemed a portion of their ownership interests in Cactus WH Enterprises, LLC ("Cactus Enterprises") pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises. In connection with the redemptions of interests in Cactus Enterprises, Cactus Enterprises distributed to BIC, 1,802,027 Units (as defined below) and a corresponding number of shares of Class B Common Stock of the Issuer. In addition, Cactus Enterprises distributed to SJB BIC LP 133,612 Units and a corresponding number of shares of Class B Common Stock.

F8 · price: The first amended and restated limited liability company operating agreement of Cactus LLC provides the holders of Units with certain rights to cause Cactus LLC to acquire all or at least a minimum portion of their Units for, at Cactus LLC's election, (x) shares of Class A Common Stock at a redemption ratio of one share of Class A Common Stock for each Unit redeemed, subject to conversion rate adjustments for stock splits, stock dividends and reclassification and other similar transactions, or (y) an equivalent amount of cash (the "Redmeption Right"). In connection with the Offering, the Reporting Person exercised his Redemption Right with respect to Units owned by him.

F9 · price: Upon the exercise of the Redemption Right, the Issuer (instead of Cactus LLC) has the right to acquire each tendered Unit directly from the exchanging Unit holder for, at its election, (x) shares of Class A Common Stock at a redemption ratio of one share of Class A Common Stock for each Unit redeemed, subject to conversion rate adjustments for stock splits, stock dividends and reclassification and other similar transactions, or (y) an equivalent amount of cash. In connection with the Offering, the Issuer exercised its Call Right and acquired the tendered Units (and a corresponding number of shares of Class B Common Stock) in return for Shares of Class A Common Stock.

F8 · derivative.exercise_date: The first amended and restated limited liability company operating agreement of Cactus LLC provides the holders of Units with certain rights to cause Cactus LLC to acquire all or at least a minimum portion of their Units for, at Cactus LLC's election, (x) shares of Class A Common Stock at a redemption ratio of one share of Class A Common Stock for each Unit redeemed, subject to conversion rate adjustments for stock splits, stock dividends and reclassification and other similar transactions, or (y) an equivalent amount of cash (the "Redmeption Right"). In connection with the Offering, the Reporting Person exercised his Redemption Right with respect to Units owned by him.

F9 · derivative.exercise_date: Upon the exercise of the Redemption Right, the Issuer (instead of Cactus LLC) has the right to acquire each tendered Unit directly from the exchanging Unit holder for, at its election, (x) shares of Class A Common Stock at a redemption ratio of one share of Class A Common Stock for each Unit redeemed, subject to conversion rate adjustments for stock splits, stock dividends and reclassification and other similar transactions, or (y) an equivalent amount of cash. In connection with the Offering, the Issuer exercised its Call Right and acquired the tendered Units (and a corresponding number of shares of Class B Common Stock) in return for Shares of Class A Common Stock.

F8 · derivative.expiration_date: The first amended and restated limited liability company operating agreement of Cactus LLC provides the holders of Units with certain rights to cause Cactus LLC to acquire all or at least a minimum portion of their Units for, at Cactus LLC's election, (x) shares of Class A Common Stock at a redemption ratio of one share of Class A Common Stock for each Unit redeemed, subject to conversion rate adjustments for stock splits, stock dividends and reclassification and other similar transactions, or (y) an equivalent amount of cash (the "Redmeption Right"). In connection with the Offering, the Reporting Person exercised his Redemption Right with respect to Units owned by him.

F9 · derivative.expiration_date: Upon the exercise of the Redemption Right, the Issuer (instead of Cactus LLC) has the right to acquire each tendered Unit directly from the exchanging Unit holder for, at its election, (x) shares of Class A Common Stock at a redemption ratio of one share of Class A Common Stock for each Unit redeemed, subject to conversion rate adjustments for stock splits, stock dividends and reclassification and other similar transactions, or (y) an equivalent amount of cash. In connection with the Offering, the Issuer exercised its Call Right and acquired the tendered Units (and a corresponding number of shares of Class B Common Stock) in return for Shares of Class A Common Stock.

F4 · ownership.nature: The securities reported herein are directly owned by Cactus Enterprises. By reason of the provisions of Rule 16a-1 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), the Reporting Person may be deemed to have an indirect pecuniary interest in the securities held directly by Cactus Enterprises through his ownership interest in Cactus Enterprises. In accordance with Instruction 4(b)(iv), the entire amount of the securities held by Cactus Enterprises is reported herein. The Reporting Person disclaims beneficial ownership of any securities that he does not directly own, except to the extent of his indirect pecuniary interest therein. This report shall not be deemed an admission that the Reporting Person is a member of a group or the beneficial owner of any securities not directly owned by the Reporting Person.

F5 · ownership.nature: Following all of the transactions reported herein, the Reporting Person is deemed to beneficially own 18,738,886 shares of Class B Common Stock and 18,738,886 Units owned by Cactus Enterprises.

SEC source: 0001104659-19-017237 · a4.xml · nonDerivative · entry 9

Bender Scott · CIK 0001701688 · Director · President and CEO · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 13,132

SEC source: 0001104659-19-017237 · a4.xml · nonDerivative · entry 8

Bender Scott · CIK 0001701688 · Director · President and CEO · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,815,519

F6 · kind: These securities were acquired in connection with the closing of the Offering. In connection with the redemption of Units, as described below, BIC and SJB BIC LP acquired 1,802,027 and 133,612 shares of Class A Common Stock, respectively.

F6 · price: These securities were acquired in connection with the closing of the Offering. In connection with the redemption of Units, as described below, BIC and SJB BIC LP acquired 1,802,027 and 133,612 shares of Class A Common Stock, respectively.

SEC source: 0001104659-19-017237 · a4.xml · nonDerivative · entry 7

Bender Scott · CIK 0001701688 · Director · President and CEO · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 13,132

SEC source: 0001104659-19-017237 · a4.xml · nonDerivative · entry 6

Bender Scott · CIK 0001701688 · Director · President and CEO · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 146,744

F6 · kind: These securities were acquired in connection with the closing of the Offering. In connection with the redemption of Units, as described below, BIC and SJB BIC LP acquired 1,802,027 and 133,612 shares of Class A Common Stock, respectively.

F6 · price: These securities were acquired in connection with the closing of the Offering. In connection with the redemption of Units, as described below, BIC and SJB BIC LP acquired 1,802,027 and 133,612 shares of Class A Common Stock, respectively.

SEC source: 0001104659-19-017237 · a4.xml · nonDerivative · entry 5

Bender Scott · CIK 0001701688 · Director · President and CEO · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 20,674,525

F3 · kind: In connection with the Offering, Cactus Enterprises distributed Class B Common Stock and Units to certain of its members other than those controlled by the Reporting Person.

F3 · price: In connection with the Offering, Cactus Enterprises distributed Class B Common Stock and Units to certain of its members other than those controlled by the Reporting Person.

F4 · ownership.nature: The securities reported herein are directly owned by Cactus Enterprises. By reason of the provisions of Rule 16a-1 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), the Reporting Person may be deemed to have an indirect pecuniary interest in the securities held directly by Cactus Enterprises through his ownership interest in Cactus Enterprises. In accordance with Instruction 4(b)(iv), the entire amount of the securities held by Cactus Enterprises is reported herein. The Reporting Person disclaims beneficial ownership of any securities that he does not directly own, except to the extent of his indirect pecuniary interest therein. This report shall not be deemed an admission that the Reporting Person is a member of a group or the beneficial owner of any securities not directly owned by the Reporting Person.

F5 · ownership.nature: Following all of the transactions reported herein, the Reporting Person is deemed to beneficially own 18,738,886 shares of Class B Common Stock and 18,738,886 Units owned by Cactus Enterprises.

SEC source: 0001104659-19-017237 · a4.xml · nonDerivative · entry 4

Bender Scott · CIK 0001701688 · Director · President and CEO · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 19,234,990

F2 · price: These securities were disposed of in connection with the closing of the Offering. In connection with the redemption of Units, as described below, BIC and SJB BIC LP disposed of a corresponding number of shares of Class B Common Stock, which shares were cancelled by the Issuer.

F4 · ownership.nature: The securities reported herein are directly owned by Cactus Enterprises. By reason of the provisions of Rule 16a-1 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), the Reporting Person may be deemed to have an indirect pecuniary interest in the securities held directly by Cactus Enterprises through his ownership interest in Cactus Enterprises. In accordance with Instruction 4(b)(iv), the entire amount of the securities held by Cactus Enterprises is reported herein. The Reporting Person disclaims beneficial ownership of any securities that he does not directly own, except to the extent of his indirect pecuniary interest therein. This report shall not be deemed an admission that the Reporting Person is a member of a group or the beneficial owner of any securities not directly owned by the Reporting Person.

F5 · ownership.nature: Following all of the transactions reported herein, the Reporting Person is deemed to beneficially own 18,738,886 shares of Class B Common Stock and 18,738,886 Units owned by Cactus Enterprises.

SEC source: 0001104659-19-017237 · a4.xml · nonDerivative · entry 3

Bender Scott · CIK 0001701688 · Director · President and CEO · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 21,037,017

F1 · price: These securities were acquired in connection with the closing of the Issuer's most recent secondary public offering on March 21, 2019 (the "Offering"). In connection with the Offering, Bender Investment Company, a Nevada corporation ("BIC"), and SJB BIC LP, a Texas limited partnership, both of which are controlled by the Reporting Person, redeemed a portion of their ownership interests in Cactus WH Enterprises, LLC ("Cactus Enterprises") pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises. In connection with the redemptions of interests in Cactus Enterprises, Cactus Enterprises distributed to BIC, 1,802,027 Units (as defined below) and a corresponding number of shares of Class B Common Stock of the Issuer. In addition, Cactus Enterprises distributed to SJB BIC LP 133,612 Units and a corresponding number of shares of Class B Common Stock.

F4 · ownership.nature: The securities reported herein are directly owned by Cactus Enterprises. By reason of the provisions of Rule 16a-1 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), the Reporting Person may be deemed to have an indirect pecuniary interest in the securities held directly by Cactus Enterprises through his ownership interest in Cactus Enterprises. In accordance with Instruction 4(b)(iv), the entire amount of the securities held by Cactus Enterprises is reported herein. The Reporting Person disclaims beneficial ownership of any securities that he does not directly own, except to the extent of his indirect pecuniary interest therein. This report shall not be deemed an admission that the Reporting Person is a member of a group or the beneficial owner of any securities not directly owned by the Reporting Person.

F5 · ownership.nature: Following all of the transactions reported herein, the Reporting Person is deemed to beneficially own 18,738,886 shares of Class B Common Stock and 18,738,886 Units owned by Cactus Enterprises.

SEC source: 0001104659-19-017237 · a4.xml · nonDerivative · entry 2

Bender Scott · CIK 0001701688 · Director · President and CEO · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 20,903,405

F2 · price: These securities were disposed of in connection with the closing of the Offering. In connection with the redemption of Units, as described below, BIC and SJB BIC LP disposed of a corresponding number of shares of Class B Common Stock, which shares were cancelled by the Issuer.

F4 · ownership.nature: The securities reported herein are directly owned by Cactus Enterprises. By reason of the provisions of Rule 16a-1 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), the Reporting Person may be deemed to have an indirect pecuniary interest in the securities held directly by Cactus Enterprises through his ownership interest in Cactus Enterprises. In accordance with Instruction 4(b)(iv), the entire amount of the securities held by Cactus Enterprises is reported herein. The Reporting Person disclaims beneficial ownership of any securities that he does not directly own, except to the extent of his indirect pecuniary interest therein. This report shall not be deemed an admission that the Reporting Person is a member of a group or the beneficial owner of any securities not directly owned by the Reporting Person.

F5 · ownership.nature: Following all of the transactions reported herein, the Reporting Person is deemed to beneficially own 18,738,886 shares of Class B Common Stock and 18,738,886 Units owned by Cactus Enterprises.

SEC source: 0001104659-19-017237 · a4.xml · nonDerivative · entry 1

Bender Scott · CIK 0001701688 · Director · President and CEO · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 21,037,017

F1 · price: These securities were acquired in connection with the closing of the Issuer's most recent secondary public offering on March 21, 2019 (the "Offering"). In connection with the Offering, Bender Investment Company, a Nevada corporation ("BIC"), and SJB BIC LP, a Texas limited partnership, both of which are controlled by the Reporting Person, redeemed a portion of their ownership interests in Cactus WH Enterprises, LLC ("Cactus Enterprises") pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises. In connection with the redemptions of interests in Cactus Enterprises, Cactus Enterprises distributed to BIC, 1,802,027 Units (as defined below) and a corresponding number of shares of Class B Common Stock of the Issuer. In addition, Cactus Enterprises distributed to SJB BIC LP 133,612 Units and a corresponding number of shares of Class B Common Stock.

F4 · ownership.nature: The securities reported herein are directly owned by Cactus Enterprises. By reason of the provisions of Rule 16a-1 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), the Reporting Person may be deemed to have an indirect pecuniary interest in the securities held directly by Cactus Enterprises through his ownership interest in Cactus Enterprises. In accordance with Instruction 4(b)(iv), the entire amount of the securities held by Cactus Enterprises is reported herein. The Reporting Person disclaims beneficial ownership of any securities that he does not directly own, except to the extent of his indirect pecuniary interest therein. This report shall not be deemed an admission that the Reporting Person is a member of a group or the beneficial owner of any securities not directly owned by the Reporting Person.

F5 · ownership.nature: Following all of the transactions reported herein, the Reporting Person is deemed to beneficially own 18,738,886 shares of Class B Common Stock and 18,738,886 Units owned by Cactus Enterprises.

SEC source: 0001104659-19-017236 · a4.xml · derivative · entry 14

Bender Joel · CIK 0001701689 · Director · COO and Senior VP · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 20,674,525

Underlying: Class A Common Stock · 362,492 shares

Expires not disclosed

F7 · security: "Units" mean ownership interests in Cactus Wellhead, LLC ("Cactus LLC"). The Issuer is the sole managing member of Cactus LLC.

F8 · derivative.exercise_price: The first amended and restated limited liability company operating agreement of Cactus LLC provides the holders of Units with certain rights to cause Cactus LLC to acquire all or at least a minimum portion of their Units for, at Cactus LLC's election, (x) shares of Class A Common Stock at a redemption ratio of one share of Class A Common Stock for each Unit redeemed, subject to conversion rate adjustments for stock splits, stock dividends and reclassification and other similar transactions, or (y) an equivalent amount of cash (the "Redmeption Right"). In connection with the Offering, the Reporting Person exercised his Redemption Right with respect to Units owned by him.

F9 · derivative.exercise_price: Upon the exercise of the Redemption Right, the Issuer (instead of Cactus LLC) has the right to acquire each tendered Unit directly from the exchanging Unit holder for, at its election, (x) shares of Class A Common Stock at a redemption ratio of one share of Class A Common Stock for each Unit redeemed, subject to conversion rate adjustments for stock splits, stock dividends and reclassification and other similar transactions, or (y) an equivalent amount of cash. In connection with the Offering, the Issuer exercised its Call Right and acquired the tendered Units (and a corresponding number of shares of Class B Common Stock) in return for Shares of Class A Common Stock.

F3 · kind: In connection with the Offering, Cactus Enterprises distributed Class B Common Stock and Units to certain of its members other than those controlled by the Reporting Person.

F10 · price: The Units were redeemed for Class A Common Stock on March 21, 2019 in connection with the Offering.

F8 · derivative.exercise_date: The first amended and restated limited liability company operating agreement of Cactus LLC provides the holders of Units with certain rights to cause Cactus LLC to acquire all or at least a minimum portion of their Units for, at Cactus LLC's election, (x) shares of Class A Common Stock at a redemption ratio of one share of Class A Common Stock for each Unit redeemed, subject to conversion rate adjustments for stock splits, stock dividends and reclassification and other similar transactions, or (y) an equivalent amount of cash (the "Redmeption Right"). In connection with the Offering, the Reporting Person exercised his Redemption Right with respect to Units owned by him.

F9 · derivative.exercise_date: Upon the exercise of the Redemption Right, the Issuer (instead of Cactus LLC) has the right to acquire each tendered Unit directly from the exchanging Unit holder for, at its election, (x) shares of Class A Common Stock at a redemption ratio of one share of Class A Common Stock for each Unit redeemed, subject to conversion rate adjustments for stock splits, stock dividends and reclassification and other similar transactions, or (y) an equivalent amount of cash. In connection with the Offering, the Issuer exercised its Call Right and acquired the tendered Units (and a corresponding number of shares of Class B Common Stock) in return for Shares of Class A Common Stock.

F8 · derivative.expiration_date: The first amended and restated limited liability company operating agreement of Cactus LLC provides the holders of Units with certain rights to cause Cactus LLC to acquire all or at least a minimum portion of their Units for, at Cactus LLC's election, (x) shares of Class A Common Stock at a redemption ratio of one share of Class A Common Stock for each Unit redeemed, subject to conversion rate adjustments for stock splits, stock dividends and reclassification and other similar transactions, or (y) an equivalent amount of cash (the "Redmeption Right"). In connection with the Offering, the Reporting Person exercised his Redemption Right with respect to Units owned by him.

F9 · derivative.expiration_date: Upon the exercise of the Redemption Right, the Issuer (instead of Cactus LLC) has the right to acquire each tendered Unit directly from the exchanging Unit holder for, at its election, (x) shares of Class A Common Stock at a redemption ratio of one share of Class A Common Stock for each Unit redeemed, subject to conversion rate adjustments for stock splits, stock dividends and reclassification and other similar transactions, or (y) an equivalent amount of cash. In connection with the Offering, the Issuer exercised its Call Right and acquired the tendered Units (and a corresponding number of shares of Class B Common Stock) in return for Shares of Class A Common Stock.

F4 · ownership.nature: The securities reported herein are directly owned by Cactus Enterprises. By reason of the provisions of Rule 16a-1 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), the Reporting Person may be deemed to have an indirect pecuniary interest in the securities held directly by Cactus Enterprises through his ownership interest in Cactus Enterprises. In accordance with Instruction 4(b)(iv), the entire amount of the securities held by Cactus Enterprises is reported herein. The Reporting Person disclaims beneficial ownership of any securities that he does not directly own, except to the extent of his indirect pecuniary interest therein. This report shall not be deemed an admission that the Reporting Person is a member of a group or the beneficial owner of any securities not directly owned by the Reporting Person.

F5 · ownership.nature: Following all of the transactions reported herein, the Reporting Person is deemed to beneficially own 18,738,886 shares of Class B Common Stock and 18,738,886 Units owned by Cactus Enterprises.

SEC source: 0001104659-19-017236 · a4.xml · derivative · entry 13

Bender Joel · CIK 0001701689 · Director · COO and Senior VP · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 19,234,990

Underlying: Class A Common Stock · 1,802,027 shares

Expires not disclosed

F7 · security: "Units" mean ownership interests in Cactus Wellhead, LLC ("Cactus LLC"). The Issuer is the sole managing member of Cactus LLC.

F8 · derivative.exercise_price: The first amended and restated limited liability company operating agreement of Cactus LLC provides the holders of Units with certain rights to cause Cactus LLC to acquire all or at least a minimum portion of their Units for, at Cactus LLC's election, (x) shares of Class A Common Stock at a redemption ratio of one share of Class A Common Stock for each Unit redeemed, subject to conversion rate adjustments for stock splits, stock dividends and reclassification and other similar transactions, or (y) an equivalent amount of cash (the "Redmeption Right"). In connection with the Offering, the Reporting Person exercised his Redemption Right with respect to Units owned by him.

F9 · derivative.exercise_price: Upon the exercise of the Redemption Right, the Issuer (instead of Cactus LLC) has the right to acquire each tendered Unit directly from the exchanging Unit holder for, at its election, (x) shares of Class A Common Stock at a redemption ratio of one share of Class A Common Stock for each Unit redeemed, subject to conversion rate adjustments for stock splits, stock dividends and reclassification and other similar transactions, or (y) an equivalent amount of cash. In connection with the Offering, the Issuer exercised its Call Right and acquired the tendered Units (and a corresponding number of shares of Class B Common Stock) in return for Shares of Class A Common Stock.

F2 · kind: These securities were disposed of in connection with the closing of the Offering. In connection with the redemption of Units, as described below, BIC and JAB BIC LP disposed of a corresponding number of shares of Class B Common Stock, which shares were cancelled by the Issuer.

F10 · price: The Units were redeemed for Class A Common Stock on March 21, 2019 in connection with the Offering.

F8 · derivative.exercise_date: The first amended and restated limited liability company operating agreement of Cactus LLC provides the holders of Units with certain rights to cause Cactus LLC to acquire all or at least a minimum portion of their Units for, at Cactus LLC's election, (x) shares of Class A Common Stock at a redemption ratio of one share of Class A Common Stock for each Unit redeemed, subject to conversion rate adjustments for stock splits, stock dividends and reclassification and other similar transactions, or (y) an equivalent amount of cash (the "Redmeption Right"). In connection with the Offering, the Reporting Person exercised his Redemption Right with respect to Units owned by him.

F9 · derivative.exercise_date: Upon the exercise of the Redemption Right, the Issuer (instead of Cactus LLC) has the right to acquire each tendered Unit directly from the exchanging Unit holder for, at its election, (x) shares of Class A Common Stock at a redemption ratio of one share of Class A Common Stock for each Unit redeemed, subject to conversion rate adjustments for stock splits, stock dividends and reclassification and other similar transactions, or (y) an equivalent amount of cash. In connection with the Offering, the Issuer exercised its Call Right and acquired the tendered Units (and a corresponding number of shares of Class B Common Stock) in return for Shares of Class A Common Stock.

F8 · derivative.expiration_date: The first amended and restated limited liability company operating agreement of Cactus LLC provides the holders of Units with certain rights to cause Cactus LLC to acquire all or at least a minimum portion of their Units for, at Cactus LLC's election, (x) shares of Class A Common Stock at a redemption ratio of one share of Class A Common Stock for each Unit redeemed, subject to conversion rate adjustments for stock splits, stock dividends and reclassification and other similar transactions, or (y) an equivalent amount of cash (the "Redmeption Right"). In connection with the Offering, the Reporting Person exercised his Redemption Right with respect to Units owned by him.

F9 · derivative.expiration_date: Upon the exercise of the Redemption Right, the Issuer (instead of Cactus LLC) has the right to acquire each tendered Unit directly from the exchanging Unit holder for, at its election, (x) shares of Class A Common Stock at a redemption ratio of one share of Class A Common Stock for each Unit redeemed, subject to conversion rate adjustments for stock splits, stock dividends and reclassification and other similar transactions, or (y) an equivalent amount of cash. In connection with the Offering, the Issuer exercised its Call Right and acquired the tendered Units (and a corresponding number of shares of Class B Common Stock) in return for Shares of Class A Common Stock.

F4 · ownership.nature: The securities reported herein are directly owned by Cactus Enterprises. By reason of the provisions of Rule 16a-1 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), the Reporting Person may be deemed to have an indirect pecuniary interest in the securities held directly by Cactus Enterprises through his ownership interest in Cactus Enterprises. In accordance with Instruction 4(b)(iv), the entire amount of the securities held by Cactus Enterprises is reported herein. The Reporting Person disclaims beneficial ownership of any securities that he does not directly own, except to the extent of his indirect pecuniary interest therein. This report shall not be deemed an admission that the Reporting Person is a member of a group or the beneficial owner of any securities not directly owned by the Reporting Person.

F5 · ownership.nature: Following all of the transactions reported herein, the Reporting Person is deemed to beneficially own 18,738,886 shares of Class B Common Stock and 18,738,886 Units owned by Cactus Enterprises.

SEC source: 0001104659-19-017236 · a4.xml · derivative · entry 12

Bender Joel · CIK 0001701689 · Director · COO and Senior VP · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 21,037,017

Underlying: Class A Common Stock · 1,802,027 shares

Expires not disclosed

F7 · security: "Units" mean ownership interests in Cactus Wellhead, LLC ("Cactus LLC"). The Issuer is the sole managing member of Cactus LLC.

F8 · derivative.exercise_price: The first amended and restated limited liability company operating agreement of Cactus LLC provides the holders of Units with certain rights to cause Cactus LLC to acquire all or at least a minimum portion of their Units for, at Cactus LLC's election, (x) shares of Class A Common Stock at a redemption ratio of one share of Class A Common Stock for each Unit redeemed, subject to conversion rate adjustments for stock splits, stock dividends and reclassification and other similar transactions, or (y) an equivalent amount of cash (the "Redmeption Right"). In connection with the Offering, the Reporting Person exercised his Redemption Right with respect to Units owned by him.

F9 · derivative.exercise_price: Upon the exercise of the Redemption Right, the Issuer (instead of Cactus LLC) has the right to acquire each tendered Unit directly from the exchanging Unit holder for, at its election, (x) shares of Class A Common Stock at a redemption ratio of one share of Class A Common Stock for each Unit redeemed, subject to conversion rate adjustments for stock splits, stock dividends and reclassification and other similar transactions, or (y) an equivalent amount of cash. In connection with the Offering, the Issuer exercised its Call Right and acquired the tendered Units (and a corresponding number of shares of Class B Common Stock) in return for Shares of Class A Common Stock.

F1 · kind: These securities were acquired in connection with the closing of the Issuer's most recent secondary public offering on March 21, 2019 (the "Offering"). In connection with the Offering, Bender Investment Company, a Nevada corporation ("BIC"), and JAB BIC LP, a Texas limited partnership, both of which are controlled by the Reporting Person, redeemed a portion of their ownership interests in Cactus WH Enterprises, LLC ("Cactus Enterprises") pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises. In connection with the redemptions of interests in Cactus Enterprises, Cactus Enterprises distributed to BIC, 1,802,027 Units (as defined below) and a corresponding number of shares of Class B Common Stock of the Issuer. In addition, Cactus Enterprises distributed to JAB BIC LP 133,612 Units and a corresponding number of shares of Class B Common Stock.

F8 · price: The first amended and restated limited liability company operating agreement of Cactus LLC provides the holders of Units with certain rights to cause Cactus LLC to acquire all or at least a minimum portion of their Units for, at Cactus LLC's election, (x) shares of Class A Common Stock at a redemption ratio of one share of Class A Common Stock for each Unit redeemed, subject to conversion rate adjustments for stock splits, stock dividends and reclassification and other similar transactions, or (y) an equivalent amount of cash (the "Redmeption Right"). In connection with the Offering, the Reporting Person exercised his Redemption Right with respect to Units owned by him.

F9 · price: Upon the exercise of the Redemption Right, the Issuer (instead of Cactus LLC) has the right to acquire each tendered Unit directly from the exchanging Unit holder for, at its election, (x) shares of Class A Common Stock at a redemption ratio of one share of Class A Common Stock for each Unit redeemed, subject to conversion rate adjustments for stock splits, stock dividends and reclassification and other similar transactions, or (y) an equivalent amount of cash. In connection with the Offering, the Issuer exercised its Call Right and acquired the tendered Units (and a corresponding number of shares of Class B Common Stock) in return for Shares of Class A Common Stock.

F8 · derivative.exercise_date: The first amended and restated limited liability company operating agreement of Cactus LLC provides the holders of Units with certain rights to cause Cactus LLC to acquire all or at least a minimum portion of their Units for, at Cactus LLC's election, (x) shares of Class A Common Stock at a redemption ratio of one share of Class A Common Stock for each Unit redeemed, subject to conversion rate adjustments for stock splits, stock dividends and reclassification and other similar transactions, or (y) an equivalent amount of cash (the "Redmeption Right"). In connection with the Offering, the Reporting Person exercised his Redemption Right with respect to Units owned by him.

F9 · derivative.exercise_date: Upon the exercise of the Redemption Right, the Issuer (instead of Cactus LLC) has the right to acquire each tendered Unit directly from the exchanging Unit holder for, at its election, (x) shares of Class A Common Stock at a redemption ratio of one share of Class A Common Stock for each Unit redeemed, subject to conversion rate adjustments for stock splits, stock dividends and reclassification and other similar transactions, or (y) an equivalent amount of cash. In connection with the Offering, the Issuer exercised its Call Right and acquired the tendered Units (and a corresponding number of shares of Class B Common Stock) in return for Shares of Class A Common Stock.

F8 · derivative.expiration_date: The first amended and restated limited liability company operating agreement of Cactus LLC provides the holders of Units with certain rights to cause Cactus LLC to acquire all or at least a minimum portion of their Units for, at Cactus LLC's election, (x) shares of Class A Common Stock at a redemption ratio of one share of Class A Common Stock for each Unit redeemed, subject to conversion rate adjustments for stock splits, stock dividends and reclassification and other similar transactions, or (y) an equivalent amount of cash (the "Redmeption Right"). In connection with the Offering, the Reporting Person exercised his Redemption Right with respect to Units owned by him.

F9 · derivative.expiration_date: Upon the exercise of the Redemption Right, the Issuer (instead of Cactus LLC) has the right to acquire each tendered Unit directly from the exchanging Unit holder for, at its election, (x) shares of Class A Common Stock at a redemption ratio of one share of Class A Common Stock for each Unit redeemed, subject to conversion rate adjustments for stock splits, stock dividends and reclassification and other similar transactions, or (y) an equivalent amount of cash. In connection with the Offering, the Issuer exercised its Call Right and acquired the tendered Units (and a corresponding number of shares of Class B Common Stock) in return for Shares of Class A Common Stock.

F4 · ownership.nature: The securities reported herein are directly owned by Cactus Enterprises. By reason of the provisions of Rule 16a-1 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), the Reporting Person may be deemed to have an indirect pecuniary interest in the securities held directly by Cactus Enterprises through his ownership interest in Cactus Enterprises. In accordance with Instruction 4(b)(iv), the entire amount of the securities held by Cactus Enterprises is reported herein. The Reporting Person disclaims beneficial ownership of any securities that he does not directly own, except to the extent of his indirect pecuniary interest therein. This report shall not be deemed an admission that the Reporting Person is a member of a group or the beneficial owner of any securities not directly owned by the Reporting Person.

F5 · ownership.nature: Following all of the transactions reported herein, the Reporting Person is deemed to beneficially own 18,738,886 shares of Class B Common Stock and 18,738,886 Units owned by Cactus Enterprises.

SEC source: 0001104659-19-017236 · a4.xml · derivative · entry 11

Bender Joel · CIK 0001701689 · Director · COO and Senior VP · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 20,903,405

Underlying: Class A Common Stock · 133,612 shares

Expires not disclosed

F7 · security: "Units" mean ownership interests in Cactus Wellhead, LLC ("Cactus LLC"). The Issuer is the sole managing member of Cactus LLC.

F8 · derivative.exercise_price: The first amended and restated limited liability company operating agreement of Cactus LLC provides the holders of Units with certain rights to cause Cactus LLC to acquire all or at least a minimum portion of their Units for, at Cactus LLC's election, (x) shares of Class A Common Stock at a redemption ratio of one share of Class A Common Stock for each Unit redeemed, subject to conversion rate adjustments for stock splits, stock dividends and reclassification and other similar transactions, or (y) an equivalent amount of cash (the "Redmeption Right"). In connection with the Offering, the Reporting Person exercised his Redemption Right with respect to Units owned by him.

F9 · derivative.exercise_price: Upon the exercise of the Redemption Right, the Issuer (instead of Cactus LLC) has the right to acquire each tendered Unit directly from the exchanging Unit holder for, at its election, (x) shares of Class A Common Stock at a redemption ratio of one share of Class A Common Stock for each Unit redeemed, subject to conversion rate adjustments for stock splits, stock dividends and reclassification and other similar transactions, or (y) an equivalent amount of cash. In connection with the Offering, the Issuer exercised its Call Right and acquired the tendered Units (and a corresponding number of shares of Class B Common Stock) in return for Shares of Class A Common Stock.

F2 · kind: These securities were disposed of in connection with the closing of the Offering. In connection with the redemption of Units, as described below, BIC and JAB BIC LP disposed of a corresponding number of shares of Class B Common Stock, which shares were cancelled by the Issuer.

F10 · price: The Units were redeemed for Class A Common Stock on March 21, 2019 in connection with the Offering.

F8 · derivative.exercise_date: The first amended and restated limited liability company operating agreement of Cactus LLC provides the holders of Units with certain rights to cause Cactus LLC to acquire all or at least a minimum portion of their Units for, at Cactus LLC's election, (x) shares of Class A Common Stock at a redemption ratio of one share of Class A Common Stock for each Unit redeemed, subject to conversion rate adjustments for stock splits, stock dividends and reclassification and other similar transactions, or (y) an equivalent amount of cash (the "Redmeption Right"). In connection with the Offering, the Reporting Person exercised his Redemption Right with respect to Units owned by him.

F9 · derivative.exercise_date: Upon the exercise of the Redemption Right, the Issuer (instead of Cactus LLC) has the right to acquire each tendered Unit directly from the exchanging Unit holder for, at its election, (x) shares of Class A Common Stock at a redemption ratio of one share of Class A Common Stock for each Unit redeemed, subject to conversion rate adjustments for stock splits, stock dividends and reclassification and other similar transactions, or (y) an equivalent amount of cash. In connection with the Offering, the Issuer exercised its Call Right and acquired the tendered Units (and a corresponding number of shares of Class B Common Stock) in return for Shares of Class A Common Stock.

F8 · derivative.expiration_date: The first amended and restated limited liability company operating agreement of Cactus LLC provides the holders of Units with certain rights to cause Cactus LLC to acquire all or at least a minimum portion of their Units for, at Cactus LLC's election, (x) shares of Class A Common Stock at a redemption ratio of one share of Class A Common Stock for each Unit redeemed, subject to conversion rate adjustments for stock splits, stock dividends and reclassification and other similar transactions, or (y) an equivalent amount of cash (the "Redmeption Right"). In connection with the Offering, the Reporting Person exercised his Redemption Right with respect to Units owned by him.

F9 · derivative.expiration_date: Upon the exercise of the Redemption Right, the Issuer (instead of Cactus LLC) has the right to acquire each tendered Unit directly from the exchanging Unit holder for, at its election, (x) shares of Class A Common Stock at a redemption ratio of one share of Class A Common Stock for each Unit redeemed, subject to conversion rate adjustments for stock splits, stock dividends and reclassification and other similar transactions, or (y) an equivalent amount of cash. In connection with the Offering, the Issuer exercised its Call Right and acquired the tendered Units (and a corresponding number of shares of Class B Common Stock) in return for Shares of Class A Common Stock.

F4 · ownership.nature: The securities reported herein are directly owned by Cactus Enterprises. By reason of the provisions of Rule 16a-1 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), the Reporting Person may be deemed to have an indirect pecuniary interest in the securities held directly by Cactus Enterprises through his ownership interest in Cactus Enterprises. In accordance with Instruction 4(b)(iv), the entire amount of the securities held by Cactus Enterprises is reported herein. The Reporting Person disclaims beneficial ownership of any securities that he does not directly own, except to the extent of his indirect pecuniary interest therein. This report shall not be deemed an admission that the Reporting Person is a member of a group or the beneficial owner of any securities not directly owned by the Reporting Person.

F5 · ownership.nature: Following all of the transactions reported herein, the Reporting Person is deemed to beneficially own 18,738,886 shares of Class B Common Stock and 18,738,886 Units owned by Cactus Enterprises.

SEC source: 0001104659-19-017236 · a4.xml · derivative · entry 10

Bender Joel · CIK 0001701689 · Director · COO and Senior VP · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 21,037,017

Underlying: Class A Common Stock · 133,612 shares

Expires not disclosed

F7 · security: "Units" mean ownership interests in Cactus Wellhead, LLC ("Cactus LLC"). The Issuer is the sole managing member of Cactus LLC.

F8 · derivative.exercise_price: The first amended and restated limited liability company operating agreement of Cactus LLC provides the holders of Units with certain rights to cause Cactus LLC to acquire all or at least a minimum portion of their Units for, at Cactus LLC's election, (x) shares of Class A Common Stock at a redemption ratio of one share of Class A Common Stock for each Unit redeemed, subject to conversion rate adjustments for stock splits, stock dividends and reclassification and other similar transactions, or (y) an equivalent amount of cash (the "Redmeption Right"). In connection with the Offering, the Reporting Person exercised his Redemption Right with respect to Units owned by him.

F9 · derivative.exercise_price: Upon the exercise of the Redemption Right, the Issuer (instead of Cactus LLC) has the right to acquire each tendered Unit directly from the exchanging Unit holder for, at its election, (x) shares of Class A Common Stock at a redemption ratio of one share of Class A Common Stock for each Unit redeemed, subject to conversion rate adjustments for stock splits, stock dividends and reclassification and other similar transactions, or (y) an equivalent amount of cash. In connection with the Offering, the Issuer exercised its Call Right and acquired the tendered Units (and a corresponding number of shares of Class B Common Stock) in return for Shares of Class A Common Stock.

F1 · kind: These securities were acquired in connection with the closing of the Issuer's most recent secondary public offering on March 21, 2019 (the "Offering"). In connection with the Offering, Bender Investment Company, a Nevada corporation ("BIC"), and JAB BIC LP, a Texas limited partnership, both of which are controlled by the Reporting Person, redeemed a portion of their ownership interests in Cactus WH Enterprises, LLC ("Cactus Enterprises") pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises. In connection with the redemptions of interests in Cactus Enterprises, Cactus Enterprises distributed to BIC, 1,802,027 Units (as defined below) and a corresponding number of shares of Class B Common Stock of the Issuer. In addition, Cactus Enterprises distributed to JAB BIC LP 133,612 Units and a corresponding number of shares of Class B Common Stock.

F8 · price: The first amended and restated limited liability company operating agreement of Cactus LLC provides the holders of Units with certain rights to cause Cactus LLC to acquire all or at least a minimum portion of their Units for, at Cactus LLC's election, (x) shares of Class A Common Stock at a redemption ratio of one share of Class A Common Stock for each Unit redeemed, subject to conversion rate adjustments for stock splits, stock dividends and reclassification and other similar transactions, or (y) an equivalent amount of cash (the "Redmeption Right"). In connection with the Offering, the Reporting Person exercised his Redemption Right with respect to Units owned by him.

F9 · price: Upon the exercise of the Redemption Right, the Issuer (instead of Cactus LLC) has the right to acquire each tendered Unit directly from the exchanging Unit holder for, at its election, (x) shares of Class A Common Stock at a redemption ratio of one share of Class A Common Stock for each Unit redeemed, subject to conversion rate adjustments for stock splits, stock dividends and reclassification and other similar transactions, or (y) an equivalent amount of cash. In connection with the Offering, the Issuer exercised its Call Right and acquired the tendered Units (and a corresponding number of shares of Class B Common Stock) in return for Shares of Class A Common Stock.

F8 · derivative.exercise_date: The first amended and restated limited liability company operating agreement of Cactus LLC provides the holders of Units with certain rights to cause Cactus LLC to acquire all or at least a minimum portion of their Units for, at Cactus LLC's election, (x) shares of Class A Common Stock at a redemption ratio of one share of Class A Common Stock for each Unit redeemed, subject to conversion rate adjustments for stock splits, stock dividends and reclassification and other similar transactions, or (y) an equivalent amount of cash (the "Redmeption Right"). In connection with the Offering, the Reporting Person exercised his Redemption Right with respect to Units owned by him.

F9 · derivative.exercise_date: Upon the exercise of the Redemption Right, the Issuer (instead of Cactus LLC) has the right to acquire each tendered Unit directly from the exchanging Unit holder for, at its election, (x) shares of Class A Common Stock at a redemption ratio of one share of Class A Common Stock for each Unit redeemed, subject to conversion rate adjustments for stock splits, stock dividends and reclassification and other similar transactions, or (y) an equivalent amount of cash. In connection with the Offering, the Issuer exercised its Call Right and acquired the tendered Units (and a corresponding number of shares of Class B Common Stock) in return for Shares of Class A Common Stock.

F8 · derivative.expiration_date: The first amended and restated limited liability company operating agreement of Cactus LLC provides the holders of Units with certain rights to cause Cactus LLC to acquire all or at least a minimum portion of their Units for, at Cactus LLC's election, (x) shares of Class A Common Stock at a redemption ratio of one share of Class A Common Stock for each Unit redeemed, subject to conversion rate adjustments for stock splits, stock dividends and reclassification and other similar transactions, or (y) an equivalent amount of cash (the "Redmeption Right"). In connection with the Offering, the Reporting Person exercised his Redemption Right with respect to Units owned by him.

F9 · derivative.expiration_date: Upon the exercise of the Redemption Right, the Issuer (instead of Cactus LLC) has the right to acquire each tendered Unit directly from the exchanging Unit holder for, at its election, (x) shares of Class A Common Stock at a redemption ratio of one share of Class A Common Stock for each Unit redeemed, subject to conversion rate adjustments for stock splits, stock dividends and reclassification and other similar transactions, or (y) an equivalent amount of cash. In connection with the Offering, the Issuer exercised its Call Right and acquired the tendered Units (and a corresponding number of shares of Class B Common Stock) in return for Shares of Class A Common Stock.

F4 · ownership.nature: The securities reported herein are directly owned by Cactus Enterprises. By reason of the provisions of Rule 16a-1 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), the Reporting Person may be deemed to have an indirect pecuniary interest in the securities held directly by Cactus Enterprises through his ownership interest in Cactus Enterprises. In accordance with Instruction 4(b)(iv), the entire amount of the securities held by Cactus Enterprises is reported herein. The Reporting Person disclaims beneficial ownership of any securities that he does not directly own, except to the extent of his indirect pecuniary interest therein. This report shall not be deemed an admission that the Reporting Person is a member of a group or the beneficial owner of any securities not directly owned by the Reporting Person.

F5 · ownership.nature: Following all of the transactions reported herein, the Reporting Person is deemed to beneficially own 18,738,886 shares of Class B Common Stock and 18,738,886 Units owned by Cactus Enterprises.

SEC source: 0001104659-19-017236 · a4.xml · nonDerivative · entry 9

Bender Joel · CIK 0001701689 · Director · COO and Senior VP · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 13,132

SEC source: 0001104659-19-017236 · a4.xml · nonDerivative · entry 8

Bender Joel · CIK 0001701689 · Director · COO and Senior VP · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,815,159

F6 · kind: These securities were acquired in connection with the closing of the Offering. In connection with the redemption of Units, as described below, BIC and JAB BIC LP acquired 1,802,027 and 133,612 shares of Class A Common Stock, respectively.

F6 · price: These securities were acquired in connection with the closing of the Offering. In connection with the redemption of Units, as described below, BIC and JAB BIC LP acquired 1,802,027 and 133,612 shares of Class A Common Stock, respectively.

SEC source: 0001104659-19-017236 · a4.xml · nonDerivative · entry 7

Bender Joel · CIK 0001701689 · Director · COO and Senior VP · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 13,132

SEC source: 0001104659-19-017236 · a4.xml · nonDerivative · entry 6

Bender Joel · CIK 0001701689 · Director · COO and Senior VP · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 146,744

F6 · kind: These securities were acquired in connection with the closing of the Offering. In connection with the redemption of Units, as described below, BIC and JAB BIC LP acquired 1,802,027 and 133,612 shares of Class A Common Stock, respectively.

F6 · price: These securities were acquired in connection with the closing of the Offering. In connection with the redemption of Units, as described below, BIC and JAB BIC LP acquired 1,802,027 and 133,612 shares of Class A Common Stock, respectively.

SEC source: 0001104659-19-017236 · a4.xml · nonDerivative · entry 5

Bender Joel · CIK 0001701689 · Director · COO and Senior VP · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 20,674,525

F3 · kind: In connection with the Offering, Cactus Enterprises distributed Class B Common Stock and Units to certain of its members other than those controlled by the Reporting Person.

F3 · price: In connection with the Offering, Cactus Enterprises distributed Class B Common Stock and Units to certain of its members other than those controlled by the Reporting Person.

F4 · ownership.nature: The securities reported herein are directly owned by Cactus Enterprises. By reason of the provisions of Rule 16a-1 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), the Reporting Person may be deemed to have an indirect pecuniary interest in the securities held directly by Cactus Enterprises through his ownership interest in Cactus Enterprises. In accordance with Instruction 4(b)(iv), the entire amount of the securities held by Cactus Enterprises is reported herein. The Reporting Person disclaims beneficial ownership of any securities that he does not directly own, except to the extent of his indirect pecuniary interest therein. This report shall not be deemed an admission that the Reporting Person is a member of a group or the beneficial owner of any securities not directly owned by the Reporting Person.

F5 · ownership.nature: Following all of the transactions reported herein, the Reporting Person is deemed to beneficially own 18,738,886 shares of Class B Common Stock and 18,738,886 Units owned by Cactus Enterprises.

SEC source: 0001104659-19-017236 · a4.xml · nonDerivative · entry 4

Bender Joel · CIK 0001701689 · Director · COO and Senior VP · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 19,234,990

F2 · price: These securities were disposed of in connection with the closing of the Offering. In connection with the redemption of Units, as described below, BIC and JAB BIC LP disposed of a corresponding number of shares of Class B Common Stock, which shares were cancelled by the Issuer.

F4 · ownership.nature: The securities reported herein are directly owned by Cactus Enterprises. By reason of the provisions of Rule 16a-1 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), the Reporting Person may be deemed to have an indirect pecuniary interest in the securities held directly by Cactus Enterprises through his ownership interest in Cactus Enterprises. In accordance with Instruction 4(b)(iv), the entire amount of the securities held by Cactus Enterprises is reported herein. The Reporting Person disclaims beneficial ownership of any securities that he does not directly own, except to the extent of his indirect pecuniary interest therein. This report shall not be deemed an admission that the Reporting Person is a member of a group or the beneficial owner of any securities not directly owned by the Reporting Person.

F5 · ownership.nature: Following all of the transactions reported herein, the Reporting Person is deemed to beneficially own 18,738,886 shares of Class B Common Stock and 18,738,886 Units owned by Cactus Enterprises.

SEC source: 0001104659-19-017236 · a4.xml · nonDerivative · entry 3

Bender Joel · CIK 0001701689 · Director · COO and Senior VP · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 21,037,017

F1 · price: These securities were acquired in connection with the closing of the Issuer's most recent secondary public offering on March 21, 2019 (the "Offering"). In connection with the Offering, Bender Investment Company, a Nevada corporation ("BIC"), and JAB BIC LP, a Texas limited partnership, both of which are controlled by the Reporting Person, redeemed a portion of their ownership interests in Cactus WH Enterprises, LLC ("Cactus Enterprises") pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises. In connection with the redemptions of interests in Cactus Enterprises, Cactus Enterprises distributed to BIC, 1,802,027 Units (as defined below) and a corresponding number of shares of Class B Common Stock of the Issuer. In addition, Cactus Enterprises distributed to JAB BIC LP 133,612 Units and a corresponding number of shares of Class B Common Stock.

F4 · ownership.nature: The securities reported herein are directly owned by Cactus Enterprises. By reason of the provisions of Rule 16a-1 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), the Reporting Person may be deemed to have an indirect pecuniary interest in the securities held directly by Cactus Enterprises through his ownership interest in Cactus Enterprises. In accordance with Instruction 4(b)(iv), the entire amount of the securities held by Cactus Enterprises is reported herein. The Reporting Person disclaims beneficial ownership of any securities that he does not directly own, except to the extent of his indirect pecuniary interest therein. This report shall not be deemed an admission that the Reporting Person is a member of a group or the beneficial owner of any securities not directly owned by the Reporting Person.

F5 · ownership.nature: Following all of the transactions reported herein, the Reporting Person is deemed to beneficially own 18,738,886 shares of Class B Common Stock and 18,738,886 Units owned by Cactus Enterprises.

SEC source: 0001104659-19-017236 · a4.xml · nonDerivative · entry 2

Bender Joel · CIK 0001701689 · Director · COO and Senior VP · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 20,903,405

F2 · price: These securities were disposed of in connection with the closing of the Offering. In connection with the redemption of Units, as described below, BIC and JAB BIC LP disposed of a corresponding number of shares of Class B Common Stock, which shares were cancelled by the Issuer.

F4 · ownership.nature: The securities reported herein are directly owned by Cactus Enterprises. By reason of the provisions of Rule 16a-1 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), the Reporting Person may be deemed to have an indirect pecuniary interest in the securities held directly by Cactus Enterprises through his ownership interest in Cactus Enterprises. In accordance with Instruction 4(b)(iv), the entire amount of the securities held by Cactus Enterprises is reported herein. The Reporting Person disclaims beneficial ownership of any securities that he does not directly own, except to the extent of his indirect pecuniary interest therein. This report shall not be deemed an admission that the Reporting Person is a member of a group or the beneficial owner of any securities not directly owned by the Reporting Person.

F5 · ownership.nature: Following all of the transactions reported herein, the Reporting Person is deemed to beneficially own 18,738,886 shares of Class B Common Stock and 18,738,886 Units owned by Cactus Enterprises.

SEC source: 0001104659-19-017236 · a4.xml · nonDerivative · entry 1

Bender Joel · CIK 0001701689 · Director · COO and Senior VP · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 21,037,017

F1 · price: These securities were acquired in connection with the closing of the Issuer's most recent secondary public offering on March 21, 2019 (the "Offering"). In connection with the Offering, Bender Investment Company, a Nevada corporation ("BIC"), and JAB BIC LP, a Texas limited partnership, both of which are controlled by the Reporting Person, redeemed a portion of their ownership interests in Cactus WH Enterprises, LLC ("Cactus Enterprises") pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises. In connection with the redemptions of interests in Cactus Enterprises, Cactus Enterprises distributed to BIC, 1,802,027 Units (as defined below) and a corresponding number of shares of Class B Common Stock of the Issuer. In addition, Cactus Enterprises distributed to JAB BIC LP 133,612 Units and a corresponding number of shares of Class B Common Stock.

F4 · ownership.nature: The securities reported herein are directly owned by Cactus Enterprises. By reason of the provisions of Rule 16a-1 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), the Reporting Person may be deemed to have an indirect pecuniary interest in the securities held directly by Cactus Enterprises through his ownership interest in Cactus Enterprises. In accordance with Instruction 4(b)(iv), the entire amount of the securities held by Cactus Enterprises is reported herein. The Reporting Person disclaims beneficial ownership of any securities that he does not directly own, except to the extent of his indirect pecuniary interest therein. This report shall not be deemed an admission that the Reporting Person is a member of a group or the beneficial owner of any securities not directly owned by the Reporting Person.

F5 · ownership.nature: Following all of the transactions reported herein, the Reporting Person is deemed to beneficially own 18,738,886 shares of Class B Common Stock and 18,738,886 Units owned by Cactus Enterprises.

SEC source: 0001104659-19-017226 · a4.xml · derivative · entry 6

Bender Steven · CIK 0001701687 · VP of Operations

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Class A Common Stock · 228,880 shares

Expires not disclosed

F4 · security: "Units" mean ownership interests in Cactus Wellhead, LLC ("Cactus LLC"). The Issuer is the sole managing member of Cactus LLC.

F5 · derivative.exercise_price: The first amended and restated limited liability company operating agreement of Cactus LLC provides the holders of Units with certain rights to cause Cactus LLC to acquire all or at least a minimum portion of their Units for, at Cactus LLC's election, (x) shares of Class A Common Stock at a redemption ratio of one share of Class A Common Stock for each Unit redeemed, subject to conversion rate adjustments for stock splits, stock dividends and reclassification and other similar transactions, or (y) an equivalent amount of cash (the "Redmeption Right"). In connection with the Offering, the Reporting Person exercised his Redemption Right with respect to Units owned by him.

F6 · derivative.exercise_price: Upon the exercise of the Redemption Right, the Issuer (instead of Cactus LLC) has the right (the "Call Right") to acquire each tendered Unit directly from the exchanging Unit holder for, at its election, (x) shares of Class A Common Stock at a redemption ratio of one share of Class A Common Stock for each Unit redeemed, subject to conversion rate adjustments for stock splits, stock dividends and reclassification and other similar transactions, or (y) an equivalent amount of cash. In connection with the Offering, the Issuer exercised its Call Right and acquired the tendered Units (and a corresponding number of shares of Class B Common Stock) in return for shares of Class A Common Stock.

F2 · kind: These securities were disposed of in connection with the closing of the Offering. In connection with the redemption of Units, as described below, the Reporting Person disposed of a corresponding number of shares of Class B Common Stock, which shares were cancelled by the Issuer.

F7 · price: The Units were redeemed for Class A Common Stock on March 21, 2019 in connection with the Offering.

F5 · derivative.exercise_date: The first amended and restated limited liability company operating agreement of Cactus LLC provides the holders of Units with certain rights to cause Cactus LLC to acquire all or at least a minimum portion of their Units for, at Cactus LLC's election, (x) shares of Class A Common Stock at a redemption ratio of one share of Class A Common Stock for each Unit redeemed, subject to conversion rate adjustments for stock splits, stock dividends and reclassification and other similar transactions, or (y) an equivalent amount of cash (the "Redmeption Right"). In connection with the Offering, the Reporting Person exercised his Redemption Right with respect to Units owned by him.

F6 · derivative.exercise_date: Upon the exercise of the Redemption Right, the Issuer (instead of Cactus LLC) has the right (the "Call Right") to acquire each tendered Unit directly from the exchanging Unit holder for, at its election, (x) shares of Class A Common Stock at a redemption ratio of one share of Class A Common Stock for each Unit redeemed, subject to conversion rate adjustments for stock splits, stock dividends and reclassification and other similar transactions, or (y) an equivalent amount of cash. In connection with the Offering, the Issuer exercised its Call Right and acquired the tendered Units (and a corresponding number of shares of Class B Common Stock) in return for shares of Class A Common Stock.

F5 · derivative.expiration_date: The first amended and restated limited liability company operating agreement of Cactus LLC provides the holders of Units with certain rights to cause Cactus LLC to acquire all or at least a minimum portion of their Units for, at Cactus LLC's election, (x) shares of Class A Common Stock at a redemption ratio of one share of Class A Common Stock for each Unit redeemed, subject to conversion rate adjustments for stock splits, stock dividends and reclassification and other similar transactions, or (y) an equivalent amount of cash (the "Redmeption Right"). In connection with the Offering, the Reporting Person exercised his Redemption Right with respect to Units owned by him.

F6 · derivative.expiration_date: Upon the exercise of the Redemption Right, the Issuer (instead of Cactus LLC) has the right (the "Call Right") to acquire each tendered Unit directly from the exchanging Unit holder for, at its election, (x) shares of Class A Common Stock at a redemption ratio of one share of Class A Common Stock for each Unit redeemed, subject to conversion rate adjustments for stock splits, stock dividends and reclassification and other similar transactions, or (y) an equivalent amount of cash. In connection with the Offering, the Issuer exercised its Call Right and acquired the tendered Units (and a corresponding number of shares of Class B Common Stock) in return for shares of Class A Common Stock.

SEC source: 0001104659-19-017226 · a4.xml · derivative · entry 5

Bender Steven · CIK 0001701687 · VP of Operations

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 228,880

Underlying: Class A Common Stock · 228,880 shares

Expires not disclosed

F4 · security: "Units" mean ownership interests in Cactus Wellhead, LLC ("Cactus LLC"). The Issuer is the sole managing member of Cactus LLC.

F5 · derivative.exercise_price: The first amended and restated limited liability company operating agreement of Cactus LLC provides the holders of Units with certain rights to cause Cactus LLC to acquire all or at least a minimum portion of their Units for, at Cactus LLC's election, (x) shares of Class A Common Stock at a redemption ratio of one share of Class A Common Stock for each Unit redeemed, subject to conversion rate adjustments for stock splits, stock dividends and reclassification and other similar transactions, or (y) an equivalent amount of cash (the "Redmeption Right"). In connection with the Offering, the Reporting Person exercised his Redemption Right with respect to Units owned by him.

F6 · derivative.exercise_price: Upon the exercise of the Redemption Right, the Issuer (instead of Cactus LLC) has the right (the "Call Right") to acquire each tendered Unit directly from the exchanging Unit holder for, at its election, (x) shares of Class A Common Stock at a redemption ratio of one share of Class A Common Stock for each Unit redeemed, subject to conversion rate adjustments for stock splits, stock dividends and reclassification and other similar transactions, or (y) an equivalent amount of cash. In connection with the Offering, the Issuer exercised its Call Right and acquired the tendered Units (and a corresponding number of shares of Class B Common Stock) in return for shares of Class A Common Stock.

F1 · kind: These securities were acquired in connection with the closing of the Issuer's most recent secondary public offering on March 21, 2019 (the "Offering"). In connection with the Offering, the Reporting Person redeemed a portion of his ownership interests in Cactus WH Enterprises, LLC ("Cactus Enterprises") pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises (the "Cactus Enterprises Agreement"), in return for which Cactus Enterprises distributed to the Reporting Person, a corresponding number of shares of Class B Common Stock and a corresponding number of Units (as defined below).

F5 · price: The first amended and restated limited liability company operating agreement of Cactus LLC provides the holders of Units with certain rights to cause Cactus LLC to acquire all or at least a minimum portion of their Units for, at Cactus LLC's election, (x) shares of Class A Common Stock at a redemption ratio of one share of Class A Common Stock for each Unit redeemed, subject to conversion rate adjustments for stock splits, stock dividends and reclassification and other similar transactions, or (y) an equivalent amount of cash (the "Redmeption Right"). In connection with the Offering, the Reporting Person exercised his Redemption Right with respect to Units owned by him.

F6 · price: Upon the exercise of the Redemption Right, the Issuer (instead of Cactus LLC) has the right (the "Call Right") to acquire each tendered Unit directly from the exchanging Unit holder for, at its election, (x) shares of Class A Common Stock at a redemption ratio of one share of Class A Common Stock for each Unit redeemed, subject to conversion rate adjustments for stock splits, stock dividends and reclassification and other similar transactions, or (y) an equivalent amount of cash. In connection with the Offering, the Issuer exercised its Call Right and acquired the tendered Units (and a corresponding number of shares of Class B Common Stock) in return for shares of Class A Common Stock.

F5 · derivative.exercise_date: The first amended and restated limited liability company operating agreement of Cactus LLC provides the holders of Units with certain rights to cause Cactus LLC to acquire all or at least a minimum portion of their Units for, at Cactus LLC's election, (x) shares of Class A Common Stock at a redemption ratio of one share of Class A Common Stock for each Unit redeemed, subject to conversion rate adjustments for stock splits, stock dividends and reclassification and other similar transactions, or (y) an equivalent amount of cash (the "Redmeption Right"). In connection with the Offering, the Reporting Person exercised his Redemption Right with respect to Units owned by him.

F6 · derivative.exercise_date: Upon the exercise of the Redemption Right, the Issuer (instead of Cactus LLC) has the right (the "Call Right") to acquire each tendered Unit directly from the exchanging Unit holder for, at its election, (x) shares of Class A Common Stock at a redemption ratio of one share of Class A Common Stock for each Unit redeemed, subject to conversion rate adjustments for stock splits, stock dividends and reclassification and other similar transactions, or (y) an equivalent amount of cash. In connection with the Offering, the Issuer exercised its Call Right and acquired the tendered Units (and a corresponding number of shares of Class B Common Stock) in return for shares of Class A Common Stock.

F5 · derivative.expiration_date: The first amended and restated limited liability company operating agreement of Cactus LLC provides the holders of Units with certain rights to cause Cactus LLC to acquire all or at least a minimum portion of their Units for, at Cactus LLC's election, (x) shares of Class A Common Stock at a redemption ratio of one share of Class A Common Stock for each Unit redeemed, subject to conversion rate adjustments for stock splits, stock dividends and reclassification and other similar transactions, or (y) an equivalent amount of cash (the "Redmeption Right"). In connection with the Offering, the Reporting Person exercised his Redemption Right with respect to Units owned by him.

F6 · derivative.expiration_date: Upon the exercise of the Redemption Right, the Issuer (instead of Cactus LLC) has the right (the "Call Right") to acquire each tendered Unit directly from the exchanging Unit holder for, at its election, (x) shares of Class A Common Stock at a redemption ratio of one share of Class A Common Stock for each Unit redeemed, subject to conversion rate adjustments for stock splits, stock dividends and reclassification and other similar transactions, or (y) an equivalent amount of cash. In connection with the Offering, the Issuer exercised its Call Right and acquired the tendered Units (and a corresponding number of shares of Class B Common Stock) in return for shares of Class A Common Stock.

SEC source: 0001104659-19-017226 · a4.xml · nonDerivative · entry 4

Bender Steven · CIK 0001701687 · VP of Operations

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,820

SEC source: 0001104659-19-017226 · a4.xml · nonDerivative · entry 3

Bender Steven · CIK 0001701687 · VP of Operations

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 236,700

F3 · kind: These securities were acquired in connection with the closing of the Offering. In connection with the redemption of Units, as described below, the Reporting Person acquired a corresponding number of shares of Class A Common Stock.

F3 · price: These securities were acquired in connection with the closing of the Offering. In connection with the redemption of Units, as described below, the Reporting Person acquired a corresponding number of shares of Class A Common Stock.

SEC source: 0001104659-19-017226 · a4.xml · nonDerivative · entry 2

Bender Steven · CIK 0001701687 · VP of Operations

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

F2 · price: These securities were disposed of in connection with the closing of the Offering. In connection with the redemption of Units, as described below, the Reporting Person disposed of a corresponding number of shares of Class B Common Stock, which shares were cancelled by the Issuer.

SEC source: 0001104659-19-017226 · a4.xml · nonDerivative · entry 1

Bender Steven · CIK 0001701687 · VP of Operations

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 228,880

F1 · price: These securities were acquired in connection with the closing of the Issuer's most recent secondary public offering on March 21, 2019 (the "Offering"). In connection with the Offering, the Reporting Person redeemed a portion of his ownership interests in Cactus WH Enterprises, LLC ("Cactus Enterprises") pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises (the "Cactus Enterprises Agreement"), in return for which Cactus Enterprises distributed to the Reporting Person, a corresponding number of shares of Class B Common Stock and a corresponding number of Units (as defined below).

SEC source: 0001104659-19-014667 · a4.xml · derivative · entry 1

ODONNELL JOHN A · CIK 0001173592 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,675

Underlying: Class A Common Stock · 2,675 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of the Issuer's Class A common stock.

F2 · derivative.exercise_date: The restricted stock units vest on the first anniversary of the award date. Vested shares will be delivered to the reporting person within 60 days of the vesting date.

F2 · derivative.expiration_date: The restricted stock units vest on the first anniversary of the award date. Vested shares will be delivered to the reporting person within 60 days of the vesting date.

SEC source: 0001104659-19-014669 · a4.xml · derivative · entry 1

Semple Alan · CIK 0001701710 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 46,535

Underlying: Class A Common Stock · 2,675 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of the Issuer's Class A common stock.

F2 · derivative.exercise_date: The restricted stock units vest on the first anniversary of the award date. Vested shares will be delivered to the reporting person within 60 days of the vesting date.

F2 · derivative.expiration_date: The restricted stock units vest on the first anniversary of the award date. Vested shares will be delivered to the reporting person within 60 days of the vesting date.

F3 · balance_after: Includes restricted stock units previously granted to the reporting person that remain subject to vesting.

SEC source: 0001104659-19-014670 · a4.xml · derivative · entry 1

SMITH IKE C. · CIK 0001466006 · Chief Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 25,900

Underlying: Class A Common Stock · 6,382 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of the Issuer's Class A common stock.

F2 · derivative.exercise_date: The restricted stock units vest in three equal annual installments beginning on the first anniversary of the award date. Vested shares will be delivered to the reporting person within 60 days of the vesting date.

F2 · derivative.expiration_date: The restricted stock units vest in three equal annual installments beginning on the first anniversary of the award date. Vested shares will be delivered to the reporting person within 60 days of the vesting date.

F3 · balance_after: Includes restricted stock units previously granted to the reporting person that remain subject to vesting.

SEC source: 0001104659-19-014666 · a4.xml · derivative · entry 1

MCGOVERN MICHAEL Y · CIK 0001259039 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,675

Underlying: Class A Common Stock · 2,675 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of the Issuer's Class A common stock.

F2 · derivative.exercise_date: The restricted stock units vest on the first anniversary of the award date. Vested shares will be delivered to the reporting person within 60 days of the vesting date.

F2 · derivative.expiration_date: The restricted stock units vest on the first anniversary of the award date. Vested shares will be delivered to the reporting person within 60 days of the vesting date.

SEC source: 0001104659-19-014668 · a4.xml · derivative · entry 1

Rosenthal Gary L · CIK 0001198825 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 46,535

Underlying: Class A Common Stock · 2,675 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of the Issuer's Class A common stock.

F2 · derivative.exercise_date: The restricted stock units vest on the first anniversary of the award date. Vested shares will be delivered to the reporting person within 60 days of the vesting date.

F2 · derivative.expiration_date: The restricted stock units vest on the first anniversary of the award date. Vested shares will be delivered to the reporting person within 60 days of the vesting date.

F3 · balance_after: Includes restricted stock units previously granted to the reporting person that remain subject to vesting.

SEC source: 0001104659-19-014671 · a4.xml · derivative · entry 1

Tadlock Stephen · CIK 0001710396 · VP and Chief Admin Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 106,008

Underlying: Class A Common Stock · 40,218 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of the Issuer's Class A common stock.

F2 · derivative.exercise_date: The restricted stock units vest in three equal annual installments beginning on the first anniversary of the award date. Vested shares will be delivered to the reporting person within 60 days of the vesting date.

F2 · derivative.expiration_date: The restricted stock units vest in three equal annual installments beginning on the first anniversary of the award date. Vested shares will be delivered to the reporting person within 60 days of the vesting date.

F3 · balance_after: Includes restricted stock units previously granted to the reporting person that remain subject to vesting.

SEC source: 0001104659-19-014665 · a4.xml · derivative · entry 1

Isaac David John · CIK 0001754023 · GC and VP of Administration

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 21,157

Underlying: Class A Common Stock · 12,041 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of the Issuer's Class A common stock.

F2 · derivative.exercise_date: The restricted stock units vest in three equal annual installments beginning on the first anniversary of the award date. Vested shares will be delivered to the reporting person within 60 days of the vesting date.

F2 · derivative.expiration_date: The restricted stock units vest in three equal annual installments beginning on the first anniversary of the award date. Vested shares will be delivered to the reporting person within 60 days of the vesting date.

F3 · balance_after: Includes restricted stock units previously granted to the reporting person that remain subject to vesting.