WHD

SEC source: 0001699136-20-000049 · wf-form4_160617273556201.xml · derivative · entry 4

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 17,681,734

Underlying: Class A Common Stock · 37,328 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.

F5 · kind: In connection with certain redemptions of ownership interests in Cactus Enterprises by certain of Cactus Enterprises' members pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises, Cactus Enterprises distributed Units to such members. The Reporting Person did not participate in the redemptions, and no Units were distributed to the Reporting Person or any entities controlled by the Reporting Person.

F5 · price: In connection with certain redemptions of ownership interests in Cactus Enterprises by certain of Cactus Enterprises' members pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises, Cactus Enterprises distributed Units to such members. The Reporting Person did not participate in the redemptions, and no Units were distributed to the Reporting Person or any entities controlled by the Reporting Person.

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.

F5 · derivative.expiration_date: In connection with certain redemptions of ownership interests in Cactus Enterprises by certain of Cactus Enterprises' members pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises, Cactus Enterprises distributed Units to such members. The Reporting Person did not participate in the redemptions, and no Units were distributed to the Reporting Person or any entities controlled by the Reporting Person.

F2 · 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: In connection with certain redemptions of ownership interests in Cactus Enterprises by certain of Cactus Enterprises' members pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises, Cactus Enterprises distributed Units to such members. The Reporting Person did not participate in the redemptions, and no Units were distributed to the Reporting Person or any entities controlled by the Reporting Person.

SEC source: 0001699136-20-000049 · wf-form4_160617273556201.xml · nonDerivative · entry 2

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 17,681,734

F1 · kind: In connection with certain redemptions of ownership interests in Cactus WH Enterprises, LLC ("Cactus Enterprises") by certain of Cactus Enterprises' members pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises, Cactus Enterprises distributed Class B Common Stock to such members. The Reporting Person did not participate in the redemptions, and no shares of Class B Common Stock were distributed to the Reporting Person or any entities controlled by the Reporting Person.

F1 · price: In connection with certain redemptions of ownership interests in Cactus WH Enterprises, LLC ("Cactus Enterprises") by certain of Cactus Enterprises' members pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises, Cactus Enterprises distributed Class B Common Stock to such members. The Reporting Person did not participate in the redemptions, and no shares of Class B Common Stock were distributed to the Reporting Person or any entities controlled by the Reporting Person.

F2 · 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.

SEC source: 0001699136-20-000048 · wf-form4_160617268139332.xml · derivative · entry 4

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 17,681,734

Underlying: Class A Common Stock · 37,328 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.

F5 · kind: In connection with certain redemptions of ownership interests in Cactus Enterprises by certain of Cactus Enterprises' members pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises, Cactus Enterprises distributed Units to such members. The Reporting Person did not participate in the redemptions, and no Units were distributed to the Reporting Person or any entities controlled by the Reporting Person.

F5 · price: In connection with certain redemptions of ownership interests in Cactus Enterprises by certain of Cactus Enterprises' members pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises, Cactus Enterprises distributed Units to such members. The Reporting Person did not participate in the redemptions, and no Units were distributed to the Reporting Person or any entities controlled by the Reporting Person.

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.

F5 · derivative.expiration_date: In connection with certain redemptions of ownership interests in Cactus Enterprises by certain of Cactus Enterprises' members pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises, Cactus Enterprises distributed Units to such members. The Reporting Person did not participate in the redemptions, and no Units were distributed to the Reporting Person or any entities controlled by the Reporting Person.

F2 · 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: In connection with certain redemptions of ownership interests in Cactus Enterprises by certain of Cactus Enterprises' members pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises, Cactus Enterprises distributed Units to such members. The Reporting Person did not participate in the redemptions, and no Units were distributed to the Reporting Person or any entities controlled by the Reporting Person.

SEC source: 0001699136-20-000048 · wf-form4_160617268139332.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: 17,681,734

F1 · kind: In connection with certain redemptions of ownership interests in Cactus WH Enterprises, LLC ("Cactus Enterprises") by certain of Cactus Enterprises' members pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises, Cactus Enterprises distributed Class B Common Stock to such members. The Reporting Person did not participate in the redemptions, and no shares of Class B Common Stock were distributed to the Reporting Person or any entities controlled by the Reporting Person.

F1 · price: In connection with certain redemptions of ownership interests in Cactus WH Enterprises, LLC ("Cactus Enterprises") by certain of Cactus Enterprises' members pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises, Cactus Enterprises distributed Class B Common Stock to such members. The Reporting Person did not participate in the redemptions, and no shares of Class B Common Stock were distributed to the Reporting Person or any entities controlled by the Reporting Person.

F2 · 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.

SEC source: 0001699136-20-000050 · wf-form4_160617278789452.xml · derivative · entry 3

Cactus WH Enterprises, LLC · CIK 0001701768 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 17,719,062

Underlying: Class A Common Stock · 6,819 shares

Expires not disclosed

F2 · security: "Units" mean ownership interests in Cactus Wellhead, LLC ("Cactus LLC"). The Issuer is the sole managing member of Cactus LLC.

F3 · 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.

F4 · kind: In connection with certain redemptions of ownership interests in the Reporting Entity by certain of the Reporting Entity's members pursuant to the first amended and restated limited liability company agreement of the Reporting Entity, the Reporting Entity distributed Units to such members.

F4 · price: In connection with certain redemptions of ownership interests in the Reporting Entity by certain of the Reporting Entity's members pursuant to the first amended and restated limited liability company agreement of the Reporting Entity, the Reporting Entity distributed Units to such members.

F3 · 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.

F4 · derivative.expiration_date: In connection with certain redemptions of ownership interests in the Reporting Entity by certain of the Reporting Entity's members pursuant to the first amended and restated limited liability company agreement of the Reporting Entity, the Reporting Entity distributed Units to such members.

SEC source: 0001699136-20-000050 · wf-form4_160617278789452.xml · nonDerivative · entry 1

Cactus WH Enterprises, LLC · CIK 0001701768 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 17,719,062

F1 · kind: In connection with certain redemptions of ownership interests in the Reporting Entity by certain of the Reporting Entity's members pursuant to the first amended and restated limited liability company agreement of the Reporting Entity, the Reporting Entity distributed Class B Common Stock to such members.

F1 · price: In connection with certain redemptions of ownership interests in the Reporting Entity by certain of the Reporting Entity's members pursuant to the first amended and restated limited liability company agreement of the Reporting Entity, the Reporting Entity distributed Class B Common Stock to such members.

SEC source: 0001699136-20-000049 · wf-form4_160617273556201.xml · derivative · entry 3

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 17,719,062

Underlying: Class A Common Stock · 6,819 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.

F5 · kind: In connection with certain redemptions of ownership interests in Cactus Enterprises by certain of Cactus Enterprises' members pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises, Cactus Enterprises distributed Units to such members. The Reporting Person did not participate in the redemptions, and no Units were distributed to the Reporting Person or any entities controlled by the Reporting Person.

F5 · price: In connection with certain redemptions of ownership interests in Cactus Enterprises by certain of Cactus Enterprises' members pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises, Cactus Enterprises distributed Units to such members. The Reporting Person did not participate in the redemptions, and no Units were distributed to the Reporting Person or any entities controlled by the Reporting Person.

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.

F5 · derivative.expiration_date: In connection with certain redemptions of ownership interests in Cactus Enterprises by certain of Cactus Enterprises' members pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises, Cactus Enterprises distributed Units to such members. The Reporting Person did not participate in the redemptions, and no Units were distributed to the Reporting Person or any entities controlled by the Reporting Person.

F2 · 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: In connection with certain redemptions of ownership interests in Cactus Enterprises by certain of Cactus Enterprises' members pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises, Cactus Enterprises distributed Units to such members. The Reporting Person did not participate in the redemptions, and no Units were distributed to the Reporting Person or any entities controlled by the Reporting Person.

SEC source: 0001699136-20-000049 · wf-form4_160617273556201.xml · nonDerivative · entry 1

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 17,719,062

F1 · kind: In connection with certain redemptions of ownership interests in Cactus WH Enterprises, LLC ("Cactus Enterprises") by certain of Cactus Enterprises' members pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises, Cactus Enterprises distributed Class B Common Stock to such members. The Reporting Person did not participate in the redemptions, and no shares of Class B Common Stock were distributed to the Reporting Person or any entities controlled by the Reporting Person.

F1 · price: In connection with certain redemptions of ownership interests in Cactus WH Enterprises, LLC ("Cactus Enterprises") by certain of Cactus Enterprises' members pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises, Cactus Enterprises distributed Class B Common Stock to such members. The Reporting Person did not participate in the redemptions, and no shares of Class B Common Stock were distributed to the Reporting Person or any entities controlled by the Reporting Person.

F2 · 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.

SEC source: 0001699136-20-000048 · wf-form4_160617268139332.xml · derivative · entry 3

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 17,719,062

Underlying: Class A Common Stock · 6,819 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.

F5 · kind: In connection with certain redemptions of ownership interests in Cactus Enterprises by certain of Cactus Enterprises' members pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises, Cactus Enterprises distributed Units to such members. The Reporting Person did not participate in the redemptions, and no Units were distributed to the Reporting Person or any entities controlled by the Reporting Person.

F5 · price: In connection with certain redemptions of ownership interests in Cactus Enterprises by certain of Cactus Enterprises' members pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises, Cactus Enterprises distributed Units to such members. The Reporting Person did not participate in the redemptions, and no Units were distributed to the Reporting Person or any entities controlled by the Reporting Person.

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.

F5 · derivative.expiration_date: In connection with certain redemptions of ownership interests in Cactus Enterprises by certain of Cactus Enterprises' members pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises, Cactus Enterprises distributed Units to such members. The Reporting Person did not participate in the redemptions, and no Units were distributed to the Reporting Person or any entities controlled by the Reporting Person.

F2 · 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: In connection with certain redemptions of ownership interests in Cactus Enterprises by certain of Cactus Enterprises' members pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises, Cactus Enterprises distributed Units to such members. The Reporting Person did not participate in the redemptions, and no Units were distributed to the Reporting Person or any entities controlled by the Reporting Person.

SEC source: 0001699136-20-000048 · wf-form4_160617268139332.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: 17,719,062

F1 · kind: In connection with certain redemptions of ownership interests in Cactus WH Enterprises, LLC ("Cactus Enterprises") by certain of Cactus Enterprises' members pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises, Cactus Enterprises distributed Class B Common Stock to such members. The Reporting Person did not participate in the redemptions, and no shares of Class B Common Stock were distributed to the Reporting Person or any entities controlled by the Reporting Person.

F1 · price: In connection with certain redemptions of ownership interests in Cactus WH Enterprises, LLC ("Cactus Enterprises") by certain of Cactus Enterprises' members pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises, Cactus Enterprises distributed Class B Common Stock to such members. The Reporting Person did not participate in the redemptions, and no shares of Class B Common Stock were distributed to the Reporting Person or any entities controlled by the Reporting Person.

F2 · 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.

SEC source: 0001699136-20-000044 · wf-form4_160573754511460.xml · derivative · entry 4

Cactus WH Enterprises, LLC · CIK 0001701768 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 17,725,881

Underlying: Class A Common Stock · 43,227 shares

Expires not disclosed

F2 · security: "Units" mean ownership interests in Cactus Wellhead, LLC ("Cactus LLC"). The Issuer is the sole managing member of Cactus LLC.

F3 · 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.

F4 · kind: In connection with certain redemptions of ownership interests in the Reporting Entity by certain of the Reporting Entity's members pursuant to the first amended and restated limited liability company agreement of the Reporting Entity, the Reporting Entity distributed Units to such members.

F4 · price: In connection with certain redemptions of ownership interests in the Reporting Entity by certain of the Reporting Entity's members pursuant to the first amended and restated limited liability company agreement of the Reporting Entity, the Reporting Entity distributed Units to such members.

F3 · 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.

F4 · derivative.expiration_date: In connection with certain redemptions of ownership interests in the Reporting Entity by certain of the Reporting Entity's members pursuant to the first amended and restated limited liability company agreement of the Reporting Entity, the Reporting Entity distributed Units to such members.

SEC source: 0001699136-20-000044 · wf-form4_160573754511460.xml · nonDerivative · entry 2

Cactus WH Enterprises, LLC · CIK 0001701768 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 17,725,881

F1 · kind: In connection with certain redemptions of ownership interests in the Reporting Entity by certain of the Reporting Entity's members pursuant to the first amended and restated limited liability company agreement of the Reporting Entity, the Reporting Entity distributed Class B Common Stock to such members.

F1 · price: In connection with certain redemptions of ownership interests in the Reporting Entity by certain of the Reporting Entity's members pursuant to the first amended and restated limited liability company agreement of the Reporting Entity, the Reporting Entity distributed Class B Common Stock to such members.

SEC source: 0001699136-20-000042 · wf-form4_160573735222431.xml · derivative · entry 4

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 17,725,881

Underlying: Class A Common Stock · 43,227 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.

F5 · kind: In connection with certain redemptions of ownership interests in Cactus Enterprises by certain of Cactus Enterprises' members pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises, Cactus Enterprises distributed Units to such members. The Reporting Person did not participate in the redemptions, and no Units were distributed to the Reporting Person or any entities controlled by the Reporting Person.

F5 · price: In connection with certain redemptions of ownership interests in Cactus Enterprises by certain of Cactus Enterprises' members pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises, Cactus Enterprises distributed Units to such members. The Reporting Person did not participate in the redemptions, and no Units were distributed to the Reporting Person or any entities controlled by the Reporting Person.

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.

F5 · derivative.expiration_date: In connection with certain redemptions of ownership interests in Cactus Enterprises by certain of Cactus Enterprises' members pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises, Cactus Enterprises distributed Units to such members. The Reporting Person did not participate in the redemptions, and no Units were distributed to the Reporting Person or any entities controlled by the Reporting Person.

F2 · 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: In connection with certain redemptions of ownership interests in Cactus Enterprises by certain of Cactus Enterprises' members pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises, Cactus Enterprises distributed Units to such members. The Reporting Person did not participate in the redemptions, and no Units were distributed to the Reporting Person or any entities controlled by the Reporting Person.

SEC source: 0001699136-20-000042 · wf-form4_160573735222431.xml · nonDerivative · entry 2

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 17,725,881

F1 · kind: In connection with certain redemptions of ownership interests in Cactus WH Enterprises, LLC ("Cactus Enterprises") by certain of Cactus Enterprises' members pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises, Cactus Enterprises distributed Class B Common Stock to such members. The Reporting Person did not participate in the redemptions, and no shares of Class B Common Stock were distributed to the Reporting Person or any entities controlled by the Reporting Person.

F1 · price: In connection with certain redemptions of ownership interests in Cactus WH Enterprises, LLC ("Cactus Enterprises") by certain of Cactus Enterprises' members pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises, Cactus Enterprises distributed Class B Common Stock to such members. The Reporting Person did not participate in the redemptions, and no shares of Class B Common Stock were distributed to the Reporting Person or any entities controlled by the Reporting Person.

F2 · 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.

SEC source: 0001699136-20-000040 · wf-form4_160573685720970.xml · derivative · entry 4

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 17,725,881

Underlying: Class A Common Stock · 43,227 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.

F5 · kind: In connection with certain redemptions of ownership interests in Cactus Enterprises by certain of Cactus Enterprises' members pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises, Cactus Enterprises distributed Units to such members. The Reporting Person did not participate in the redemptions, and no Units were distributed to the Reporting Person or any entities controlled by the Reporting Person.

F5 · price: In connection with certain redemptions of ownership interests in Cactus Enterprises by certain of Cactus Enterprises' members pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises, Cactus Enterprises distributed Units to such members. The Reporting Person did not participate in the redemptions, and no Units were distributed to the Reporting Person or any entities controlled by the Reporting Person.

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.

F5 · derivative.expiration_date: In connection with certain redemptions of ownership interests in Cactus Enterprises by certain of Cactus Enterprises' members pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises, Cactus Enterprises distributed Units to such members. The Reporting Person did not participate in the redemptions, and no Units were distributed to the Reporting Person or any entities controlled by the Reporting Person.

F2 · 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: In connection with certain redemptions of ownership interests in Cactus Enterprises by certain of Cactus Enterprises' members pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises, Cactus Enterprises distributed Units to such members. The Reporting Person did not participate in the redemptions, and no Units were distributed to the Reporting Person or any entities controlled by the Reporting Person.

SEC source: 0001699136-20-000040 · wf-form4_160573685720970.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: 17,725,881

F1 · kind: In connection with certain redemptions of ownership interests in Cactus WH Enterprises, LLC ("Cactus Enterprises") by certain of Cactus Enterprises' members pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises, Cactus Enterprises distributed Class B Common Stock to such members. The Reporting Person did not participate in the redemptions, and no shares of Class B Common Stock were distributed to the Reporting Person or any entities controlled by the Reporting Person.

F1 · price: In connection with certain redemptions of ownership interests in Cactus WH Enterprises, LLC ("Cactus Enterprises") by certain of Cactus Enterprises' members pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises, Cactus Enterprises distributed Class B Common Stock to such members. The Reporting Person did not participate in the redemptions, and no shares of Class B Common Stock were distributed to the Reporting Person or any entities controlled by the Reporting Person.

F2 · 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.

SEC source: 0001699136-20-000044 · wf-form4_160573754511460.xml · derivative · entry 3

Cactus WH Enterprises, LLC · CIK 0001701768 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 17,769,108

Underlying: Class A Common Stock · 23,133 shares

Expires not disclosed

F2 · security: "Units" mean ownership interests in Cactus Wellhead, LLC ("Cactus LLC"). The Issuer is the sole managing member of Cactus LLC.

F3 · 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.

F4 · kind: In connection with certain redemptions of ownership interests in the Reporting Entity by certain of the Reporting Entity's members pursuant to the first amended and restated limited liability company agreement of the Reporting Entity, the Reporting Entity distributed Units to such members.

F4 · price: In connection with certain redemptions of ownership interests in the Reporting Entity by certain of the Reporting Entity's members pursuant to the first amended and restated limited liability company agreement of the Reporting Entity, the Reporting Entity distributed Units to such members.

F3 · 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.

F4 · derivative.expiration_date: In connection with certain redemptions of ownership interests in the Reporting Entity by certain of the Reporting Entity's members pursuant to the first amended and restated limited liability company agreement of the Reporting Entity, the Reporting Entity distributed Units to such members.

SEC source: 0001699136-20-000044 · wf-form4_160573754511460.xml · nonDerivative · entry 1

Cactus WH Enterprises, LLC · CIK 0001701768 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 17,769,108

F1 · kind: In connection with certain redemptions of ownership interests in the Reporting Entity by certain of the Reporting Entity's members pursuant to the first amended and restated limited liability company agreement of the Reporting Entity, the Reporting Entity distributed Class B Common Stock to such members.

F1 · price: In connection with certain redemptions of ownership interests in the Reporting Entity by certain of the Reporting Entity's members pursuant to the first amended and restated limited liability company agreement of the Reporting Entity, the Reporting Entity distributed Class B Common Stock to such members.

SEC source: 0001699136-20-000042 · wf-form4_160573735222431.xml · derivative · entry 3

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 17,769,108

Underlying: Class A Common Stock · 23,133 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.

F5 · kind: In connection with certain redemptions of ownership interests in Cactus Enterprises by certain of Cactus Enterprises' members pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises, Cactus Enterprises distributed Units to such members. The Reporting Person did not participate in the redemptions, and no Units were distributed to the Reporting Person or any entities controlled by the Reporting Person.

F5 · price: In connection with certain redemptions of ownership interests in Cactus Enterprises by certain of Cactus Enterprises' members pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises, Cactus Enterprises distributed Units to such members. The Reporting Person did not participate in the redemptions, and no Units were distributed to the Reporting Person or any entities controlled by the Reporting Person.

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.

F5 · derivative.expiration_date: In connection with certain redemptions of ownership interests in Cactus Enterprises by certain of Cactus Enterprises' members pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises, Cactus Enterprises distributed Units to such members. The Reporting Person did not participate in the redemptions, and no Units were distributed to the Reporting Person or any entities controlled by the Reporting Person.

F2 · 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: In connection with certain redemptions of ownership interests in Cactus Enterprises by certain of Cactus Enterprises' members pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises, Cactus Enterprises distributed Units to such members. The Reporting Person did not participate in the redemptions, and no Units were distributed to the Reporting Person or any entities controlled by the Reporting Person.

SEC source: 0001699136-20-000042 · wf-form4_160573735222431.xml · nonDerivative · entry 1

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 17,769,108

F1 · kind: In connection with certain redemptions of ownership interests in Cactus WH Enterprises, LLC ("Cactus Enterprises") by certain of Cactus Enterprises' members pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises, Cactus Enterprises distributed Class B Common Stock to such members. The Reporting Person did not participate in the redemptions, and no shares of Class B Common Stock were distributed to the Reporting Person or any entities controlled by the Reporting Person.

F1 · price: In connection with certain redemptions of ownership interests in Cactus WH Enterprises, LLC ("Cactus Enterprises") by certain of Cactus Enterprises' members pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises, Cactus Enterprises distributed Class B Common Stock to such members. The Reporting Person did not participate in the redemptions, and no shares of Class B Common Stock were distributed to the Reporting Person or any entities controlled by the Reporting Person.

F2 · 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.

SEC source: 0001699136-20-000040 · wf-form4_160573685720970.xml · derivative · entry 3

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 17,769,108

Underlying: Class A Common Stock · 23,133 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.

F5 · kind: In connection with certain redemptions of ownership interests in Cactus Enterprises by certain of Cactus Enterprises' members pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises, Cactus Enterprises distributed Units to such members. The Reporting Person did not participate in the redemptions, and no Units were distributed to the Reporting Person or any entities controlled by the Reporting Person.

F5 · price: In connection with certain redemptions of ownership interests in Cactus Enterprises by certain of Cactus Enterprises' members pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises, Cactus Enterprises distributed Units to such members. The Reporting Person did not participate in the redemptions, and no Units were distributed to the Reporting Person or any entities controlled by the Reporting Person.

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.

F5 · derivative.expiration_date: In connection with certain redemptions of ownership interests in Cactus Enterprises by certain of Cactus Enterprises' members pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises, Cactus Enterprises distributed Units to such members. The Reporting Person did not participate in the redemptions, and no Units were distributed to the Reporting Person or any entities controlled by the Reporting Person.

F2 · 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: In connection with certain redemptions of ownership interests in Cactus Enterprises by certain of Cactus Enterprises' members pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises, Cactus Enterprises distributed Units to such members. The Reporting Person did not participate in the redemptions, and no Units were distributed to the Reporting Person or any entities controlled by the Reporting Person.

SEC source: 0001699136-20-000040 · wf-form4_160573685720970.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: 17,769,108

F1 · kind: In connection with certain redemptions of ownership interests in Cactus WH Enterprises, LLC ("Cactus Enterprises") by certain of Cactus Enterprises' members pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises, Cactus Enterprises distributed Class B Common Stock to such members. The Reporting Person did not participate in the redemptions, and no shares of Class B Common Stock were distributed to the Reporting Person or any entities controlled by the Reporting Person.

F1 · price: In connection with certain redemptions of ownership interests in Cactus WH Enterprises, LLC ("Cactus Enterprises") by certain of Cactus Enterprises' members pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises, Cactus Enterprises distributed Class B Common Stock to such members. The Reporting Person did not participate in the redemptions, and no shares of Class B Common Stock were distributed to the Reporting Person or any entities controlled by the Reporting Person.

F2 · 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.

SEC source: 0001699136-21-000022 · wf-form5_161350148015725.xml · derivative · entry 2

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 17,631,734

Underlying: Class A Common Stock · 0 shares

Expires not disclosed

F1 · security: On October 31, 2020, the Reporting Person gifted non-voting shares in an entity through which he and a member of his immediate family indirectly beneficially owns shares of Class B Common Stock of the Issuer and units representing limited liability company interests ("Units") in Cactus Wellhead, LLC ("Cactus LLC"), an entity in which the Issuer is the sole managing member, to trusts established for the benefit of the reporting person's children and grandchildren. The reported transactions did not transfer voting or investment power over the Class B Common Stock, and therefore, the number of shares of Class B Common Stock and Units deemed beneficially owned by the Reporting Person remains unchanged.

F3 · 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.

F1 · shares: On October 31, 2020, the Reporting Person gifted non-voting shares in an entity through which he and a member of his immediate family indirectly beneficially owns shares of Class B Common Stock of the Issuer and units representing limited liability company interests ("Units") in Cactus Wellhead, LLC ("Cactus LLC"), an entity in which the Issuer is the sole managing member, to trusts established for the benefit of the reporting person's children and grandchildren. The reported transactions did not transfer voting or investment power over the Class B Common Stock, and therefore, the number of shares of Class B Common Stock and Units deemed beneficially owned by the Reporting Person remains unchanged.

F3 · 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.

F3 · 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.

F1 · derivative.underlying_shares: On October 31, 2020, the Reporting Person gifted non-voting shares in an entity through which he and a member of his immediate family indirectly beneficially owns shares of Class B Common Stock of the Issuer and units representing limited liability company interests ("Units") in Cactus Wellhead, LLC ("Cactus LLC"), an entity in which the Issuer is the sole managing member, to trusts established for the benefit of the reporting person's children and grandchildren. The reported transactions did not transfer voting or investment power over the Class B Common Stock, and therefore, the number of shares of Class B Common Stock and Units deemed beneficially owned by the Reporting Person remains unchanged.

F3 · derivative.underlying_shares: 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.

F2 · ownership.nature: The securities reported herein are directly owned by Cactus WH Enterprises, LLC ("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.

SEC source: 0001699136-21-000022 · wf-form5_161350148015725.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: 17,631,734

F1 · shares: On October 31, 2020, the Reporting Person gifted non-voting shares in an entity through which he and a member of his immediate family indirectly beneficially owns shares of Class B Common Stock of the Issuer and units representing limited liability company interests ("Units") in Cactus Wellhead, LLC ("Cactus LLC"), an entity in which the Issuer is the sole managing member, to trusts established for the benefit of the reporting person's children and grandchildren. The reported transactions did not transfer voting or investment power over the Class B Common Stock, and therefore, the number of shares of Class B Common Stock and Units deemed beneficially owned by the Reporting Person remains unchanged.

F2 · ownership.nature: The securities reported herein are directly owned by Cactus WH Enterprises, LLC ("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.

SEC source: 0001699136-21-000021 · wf-form5_161350142182524.xml · derivative · entry 2

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 17,631,734

Underlying: Class A Common Stock · 0 shares

Expires not disclosed

F1 · security: On October 31, 2020, the Reporting Person gifted non-voting shares in an entity through which he and a member of his immediate family indirectly beneficially owns shares of Class B Common Stock of the Issuer and units representing limited liability company interests ("Units") in Cactus Wellhead, LLC ("Cactus LLC"), an entity in which the Issuer is the sole managing member, to trusts established for the benefit of the reporting person's children. The reported transactions did not transfer voting or investment power over the Class B Common Stock or Units, and therefore, the number of shares of Class B Common Stock and Units deemed beneficially owned by the Reporting Person remains unchanged.

F3 · 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.

F1 · shares: On October 31, 2020, the Reporting Person gifted non-voting shares in an entity through which he and a member of his immediate family indirectly beneficially owns shares of Class B Common Stock of the Issuer and units representing limited liability company interests ("Units") in Cactus Wellhead, LLC ("Cactus LLC"), an entity in which the Issuer is the sole managing member, to trusts established for the benefit of the reporting person's children. The reported transactions did not transfer voting or investment power over the Class B Common Stock or Units, and therefore, the number of shares of Class B Common Stock and Units deemed beneficially owned by the Reporting Person remains unchanged.

F3 · 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.

F3 · 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.

F1 · derivative.underlying_shares: On October 31, 2020, the Reporting Person gifted non-voting shares in an entity through which he and a member of his immediate family indirectly beneficially owns shares of Class B Common Stock of the Issuer and units representing limited liability company interests ("Units") in Cactus Wellhead, LLC ("Cactus LLC"), an entity in which the Issuer is the sole managing member, to trusts established for the benefit of the reporting person's children. The reported transactions did not transfer voting or investment power over the Class B Common Stock or Units, and therefore, the number of shares of Class B Common Stock and Units deemed beneficially owned by the Reporting Person remains unchanged.

F3 · derivative.underlying_shares: 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.

F2 · ownership.nature: The securities reported herein are directly owned by Cactus WH Enterprises, LLC ("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.

SEC source: 0001699136-21-000021 · wf-form5_161350142182524.xml · nonDerivative · entry 1

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 17,631,734

F1 · shares: On October 31, 2020, the Reporting Person gifted non-voting shares in an entity through which he and a member of his immediate family indirectly beneficially owns shares of Class B Common Stock of the Issuer and units representing limited liability company interests ("Units") in Cactus Wellhead, LLC ("Cactus LLC"), an entity in which the Issuer is the sole managing member, to trusts established for the benefit of the reporting person's children. The reported transactions did not transfer voting or investment power over the Class B Common Stock or Units, and therefore, the number of shares of Class B Common Stock and Units deemed beneficially owned by the Reporting Person remains unchanged.

F2 · ownership.nature: The securities reported herein are directly owned by Cactus WH Enterprises, LLC ("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.

SEC source: 0001699136-20-000028 · wf-form4_160381167188445.xml · derivative · entry 3

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 36,689

Underlying: Class A Common Stock · 3,038 shares

Expires not disclosed

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

F1 · derivative.exercise_price: Restricted stock units convert into Class A common stock on a one-for-one basis.

F3 · derivative.exercise_date: On October 24, 2018, the reporting person was granted 9,116 restricted stock units, vesting in three equal annual installments beginning on the first anniversary of the grant date.

F3 · derivative.expiration_date: On October 24, 2018, the reporting person was granted 9,116 restricted stock units, vesting in three equal annual installments beginning on the first anniversary of the grant date.

SEC source: 0001699136-20-000028 · wf-form4_160381167188445.xml · nonDerivative · entry 2

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,390

F2 · shares: Represents shares withheld by the Company to satisfy tax withholding obligations upon the vesting of previously granted restricted stock units.

SEC source: 0001699136-20-000028 · wf-form4_160381167188445.xml · nonDerivative · entry 1

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,373

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

F1 · price: Restricted stock units convert into Class A common stock on a one-for-one basis.

SEC source: 0001699136-20-000020 · wf-form4_159804232892084.xml · derivative · entry 2

Cactus WH Enterprises, LLC · CIK 0001701768 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 17,792,241

Underlying: Class A Common Stock · 5,137 shares

Expires not disclosed

F2 · security: "Units" mean ownership interests in Cactus Wellhead, LLC ("Cactus LLC"). The Issuer is the sole managing member of Cactus LLC.

F3 · 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.

F4 · kind: In connection with certain redemptions of ownership interests in the Reporting Entity by certain of the Reporting Entity's members pursuant to the first amended and restated limited liability company agreement of the Reporting Entity, the Reporting Entity distributed Units to such members.

F4 · price: In connection with certain redemptions of ownership interests in the Reporting Entity by certain of the Reporting Entity's members pursuant to the first amended and restated limited liability company agreement of the Reporting Entity, the Reporting Entity distributed Units to such members.

F3 · 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.

F4 · derivative.expiration_date: In connection with certain redemptions of ownership interests in the Reporting Entity by certain of the Reporting Entity's members pursuant to the first amended and restated limited liability company agreement of the Reporting Entity, the Reporting Entity distributed Units to such members.

SEC source: 0001699136-20-000020 · wf-form4_159804232892084.xml · nonDerivative · entry 1

Cactus WH Enterprises, LLC · CIK 0001701768 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 17,792,241

F1 · kind: In connection with certain redemptions of ownership interests in the Reporting Entity by certain of the Reporting Entity's members pursuant to the first amended and restated limited liability company agreement of the Reporting Entity, the Reporting Entity distributed Class B Common Stock to such members.

F1 · price: In connection with certain redemptions of ownership interests in the Reporting Entity by certain of the Reporting Entity's members pursuant to the first amended and restated limited liability company agreement of the Reporting Entity, the Reporting Entity distributed Class B Common Stock to such members.

SEC source: 0001699136-20-000021 · wf-form4_159804238093263.xml · derivative · entry 2

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 17,792,241

Underlying: Class A Common Stock · 5,137 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.

F6 · kind: In connection with certain redemptions of ownership interests in Cactus Enterprises by certain of Cactus Enterprises' members pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises, Cactus Enterprises distributed Units to such members. The Reporting Person did not participate in the redemptions, and no Units were distributed to the Reporting Person or any entities controlled by the Reporting Person.

F6 · price: In connection with certain redemptions of ownership interests in Cactus Enterprises by certain of Cactus Enterprises' members pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises, Cactus Enterprises distributed Units to such members. The Reporting Person did not participate in the redemptions, and no Units were distributed to the Reporting Person or any entities controlled by the Reporting Person.

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.

F6 · derivative.expiration_date: In connection with certain redemptions of ownership interests in Cactus Enterprises by certain of Cactus Enterprises' members pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises, Cactus Enterprises distributed Units to such members. The Reporting Person did not participate in the redemptions, and no Units were distributed to the Reporting Person or any entities controlled by the Reporting Person.

F2 · 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.

F3 · ownership.nature: (Continued from footnote 2) 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.

F6 · ownership.nature: In connection with certain redemptions of ownership interests in Cactus Enterprises by certain of Cactus Enterprises' members pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises, Cactus Enterprises distributed Units to such members. The Reporting Person did not participate in the redemptions, and no Units were distributed to the Reporting Person or any entities controlled by the Reporting Person.

SEC source: 0001699136-20-000021 · wf-form4_159804238093263.xml · nonDerivative · entry 1

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 17,792,241

F1 · kind: In connection with certain redemptions of ownership interests in Cactus WH Enterprises, LLC ("Cactus Enterprises") by certain of Cactus Enterprises' members pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises, Cactus Enterprises distributed Class B Common Stock to such members. The Reporting Person did not participate in the redemptions, and no shares of Class B Common Stock were distributed to the Reporting Person or any entities controlled by the Reporting Person.

F1 · price: In connection with certain redemptions of ownership interests in Cactus WH Enterprises, LLC ("Cactus Enterprises") by certain of Cactus Enterprises' members pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises, Cactus Enterprises distributed Class B Common Stock to such members. The Reporting Person did not participate in the redemptions, and no shares of Class B Common Stock were distributed to the Reporting Person or any entities controlled by the Reporting Person.

F2 · 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.

F3 · ownership.nature: (Continued from footnote 2) 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.

SEC source: 0001699136-20-000019 · wf-form4_159804226914562.xml · derivative · entry 2

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 17,792,241

Underlying: Class A Common Stock · 5,137 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.

F6 · kind: In connection with certain redemptions of ownership interests in Cactus Enterprises by certain of Cactus Enterprises' members pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises, Cactus Enterprises distributed Units to such members. The Reporting Person did not participate in the redemptions, and no Units were distributed to the Reporting Person or any entities controlled by the Reporting Person.

F6 · price: In connection with certain redemptions of ownership interests in Cactus Enterprises by certain of Cactus Enterprises' members pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises, Cactus Enterprises distributed Units to such members. The Reporting Person did not participate in the redemptions, and no Units were distributed to the Reporting Person or any entities controlled by the Reporting Person.

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.

F6 · derivative.expiration_date: In connection with certain redemptions of ownership interests in Cactus Enterprises by certain of Cactus Enterprises' members pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises, Cactus Enterprises distributed Units to such members. The Reporting Person did not participate in the redemptions, and no Units were distributed to the Reporting Person or any entities controlled by the Reporting Person.

F2 · 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.

F3 · ownership.nature: (Continued from footnote 2) 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.

F6 · ownership.nature: In connection with certain redemptions of ownership interests in Cactus Enterprises by certain of Cactus Enterprises' members pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises, Cactus Enterprises distributed Units to such members. The Reporting Person did not participate in the redemptions, and no Units were distributed to the Reporting Person or any entities controlled by the Reporting Person.

SEC source: 0001699136-20-000019 · wf-form4_159804226914562.xml · nonDerivative · entry 1

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 17,792,241

F1 · kind: In connection with certain redemptions of ownership interests in Cactus WH Enterprises, LLC ("Cactus Enterprises") by certain of Cactus Enterprises' members pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises, Cactus Enterprises distributed Class B Common Stock to such members. The Reporting Person did not participate in the redemptions, and no shares of Class B Common Stock were distributed to the Reporting Person or any entities controlled by the Reporting Person.

F1 · price: In connection with certain redemptions of ownership interests in Cactus WH Enterprises, LLC ("Cactus Enterprises") by certain of Cactus Enterprises' members pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises, Cactus Enterprises distributed Class B Common Stock to such members. The Reporting Person did not participate in the redemptions, and no shares of Class B Common Stock were distributed to the Reporting Person or any entities controlled by the Reporting Person.

F2 · 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.

F3 · ownership.nature: (Continued from footnote 2) 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.

SEC source: 0001699136-20-000013 · wf-form4_159776040104845.xml · derivative · entry 2

Cactus WH Enterprises, LLC · CIK 0001701768 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 17,797,378

Underlying: Class A Common Stock · 62,565 shares

Expires not disclosed

F2 · security: "Units" mean ownership interests in Cactus Wellhead, LLC ("Cactus LLC"). The Issuer is the sole managing member of Cactus LLC.

F3 · 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.

F4 · kind: In connection with certain redemptions of ownership interests in the Reporting Entity by certain of the Reporting Entity's members pursuant to the first amended and restated limited liability company agreement of the Reporting Entity, the Reporting Entity distributed Units to such members.

F4 · price: In connection with certain redemptions of ownership interests in the Reporting Entity by certain of the Reporting Entity's members pursuant to the first amended and restated limited liability company agreement of the Reporting Entity, the Reporting Entity distributed Units to such members.

F3 · 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.

F4 · derivative.expiration_date: In connection with certain redemptions of ownership interests in the Reporting Entity by certain of the Reporting Entity's members pursuant to the first amended and restated limited liability company agreement of the Reporting Entity, the Reporting Entity distributed Units to such members.

SEC source: 0001699136-20-000013 · wf-form4_159776040104845.xml · nonDerivative · entry 1

Cactus WH Enterprises, LLC · CIK 0001701768 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 17,797,378

F1 · kind: In connection with certain redemptions of ownership interests in the Reporting Entity by certain of the Reporting Entity's members pursuant to the first amended and restated limited liability company agreement of the Reporting Entity, the Reporting Entity distributed Class B Common Stock to such members.

F1 · price: In connection with certain redemptions of ownership interests in the Reporting Entity by certain of the Reporting Entity's members pursuant to the first amended and restated limited liability company agreement of the Reporting Entity, the Reporting Entity distributed Class B Common Stock to such members.

SEC source: 0001699136-20-000015 · wf-form4_159776064681162.xml · derivative · entry 2

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 17,797,378

Underlying: Class A Common Stock · 62,565 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.

F6 · kind: In connection with certain redemptions of ownership interests in Cactus Enterprises by certain of Cactus Enterprises' members pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises, Cactus Enterprises distributed Units to such members. The Reporting Person did not participate in the redemptions, and no Units were distributed to the Reporting Person or any entities controlled by the Reporting Person.

F6 · price: In connection with certain redemptions of ownership interests in Cactus Enterprises by certain of Cactus Enterprises' members pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises, Cactus Enterprises distributed Units to such members. The Reporting Person did not participate in the redemptions, and no Units were distributed to the Reporting Person or any entities controlled by the Reporting Person.

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.

F6 · derivative.expiration_date: In connection with certain redemptions of ownership interests in Cactus Enterprises by certain of Cactus Enterprises' members pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises, Cactus Enterprises distributed Units to such members. The Reporting Person did not participate in the redemptions, and no Units were distributed to the Reporting Person or any entities controlled by the Reporting Person.

F2 · 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.

F3 · ownership.nature: (Continued from footnote 2) 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.

F6 · ownership.nature: In connection with certain redemptions of ownership interests in Cactus Enterprises by certain of Cactus Enterprises' members pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises, Cactus Enterprises distributed Units to such members. The Reporting Person did not participate in the redemptions, and no Units were distributed to the Reporting Person or any entities controlled by the Reporting Person.

SEC source: 0001699136-20-000015 · wf-form4_159776064681162.xml · nonDerivative · entry 1

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 17,797,378

F1 · kind: In connection with certain redemptions of ownership interests in Cactus WH Enterprises, LLC ("Cactus Enterprises") by certain of Cactus Enterprises' members pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises, Cactus Enterprises distributed Class B Common Stock to such members. The Reporting Person did not participate in the redemptions, and no shares of Class B Common Stock were distributed to the Reporting Person or any entities controlled by the Reporting Person.

F1 · price: In connection with certain redemptions of ownership interests in Cactus WH Enterprises, LLC ("Cactus Enterprises") by certain of Cactus Enterprises' members pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises, Cactus Enterprises distributed Class B Common Stock to such members. The Reporting Person did not participate in the redemptions, and no shares of Class B Common Stock were distributed to the Reporting Person or any entities controlled by the Reporting Person.

F2 · 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.

F3 · ownership.nature: (Continued from footnote 2) 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.

SEC source: 0001699136-20-000014 · wf-form4_159776058659468.xml · derivative · entry 2

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 17,797,378

Underlying: Class A Common Stock · 62,565 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.

F6 · kind: In connection with certain redemptions of ownership interests in Cactus Enterprises by certain of Cactus Enterprises' members pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises, Cactus Enterprises distributed Units to such members. The Reporting Person did not participate in the redemptions, and no Units were distributed to the Reporting Person or any entities controlled by the Reporting Person.

F6 · price: In connection with certain redemptions of ownership interests in Cactus Enterprises by certain of Cactus Enterprises' members pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises, Cactus Enterprises distributed Units to such members. The Reporting Person did not participate in the redemptions, and no Units were distributed to the Reporting Person or any entities controlled by the Reporting Person.

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.

F6 · derivative.expiration_date: In connection with certain redemptions of ownership interests in Cactus Enterprises by certain of Cactus Enterprises' members pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises, Cactus Enterprises distributed Units to such members. The Reporting Person did not participate in the redemptions, and no Units were distributed to the Reporting Person or any entities controlled by the Reporting Person.

F2 · 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.

F3 · ownership.nature: (Continued from footnote 2) 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.

F6 · ownership.nature: In connection with certain redemptions of ownership interests in Cactus Enterprises by certain of Cactus Enterprises' members pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises, Cactus Enterprises distributed Units to such members. The Reporting Person did not participate in the redemptions, and no Units were distributed to the Reporting Person or any entities controlled by the Reporting Person.

SEC source: 0001699136-20-000014 · wf-form4_159776058659468.xml · nonDerivative · entry 1

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 17,797,378

F1 · kind: In connection with certain redemptions of ownership interests in Cactus WH Enterprises, LLC ("Cactus Enterprises") by certain of Cactus Enterprises' members pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises, Cactus Enterprises distributed Class B Common Stock to such members. The Reporting Person did not participate in the redemptions, and no shares of Class B Common Stock were distributed to the Reporting Person or any entities controlled by the Reporting Person.

F1 · price: In connection with certain redemptions of ownership interests in Cactus WH Enterprises, LLC ("Cactus Enterprises") by certain of Cactus Enterprises' members pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises, Cactus Enterprises distributed Class B Common Stock to such members. The Reporting Person did not participate in the redemptions, and no shares of Class B Common Stock were distributed to the Reporting Person or any entities controlled by the Reporting Person.

F2 · 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.

F3 · ownership.nature: (Continued from footnote 2) 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.

SEC source: 0001104659-20-065887 · a4.xml · derivative · entry 2

Cactus WH Enterprises, LLC · CIK 0001701768 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 17,859,943

Underlying: Class A Common Stock · 10,500 shares

Expires not disclosed

F2 · security: "Units" mean ownership interests in Cactus Wellhead, LLC ("Cactus LLC"). The Issuer is the sole managing member of Cactus LLC.

F3 · 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.

F4 · kind: In connection with certain redemptions of ownership interests in the Reporting Entity by certain of the Reporting Entity's members pursuant to the first amended and restated limited liability company agreement of the Reporting Entity, the Reporting Entity distributed Units to such members.

F4 · price: In connection with certain redemptions of ownership interests in the Reporting Entity by certain of the Reporting Entity's members pursuant to the first amended and restated limited liability company agreement of the Reporting Entity, the Reporting Entity distributed Units to such members.

F3 · 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.

F4 · derivative.expiration_date: In connection with certain redemptions of ownership interests in the Reporting Entity by certain of the Reporting Entity's members pursuant to the first amended and restated limited liability company agreement of the Reporting Entity, the Reporting Entity distributed Units to such members.

SEC source: 0001104659-20-065887 · a4.xml · nonDerivative · entry 1

Cactus WH Enterprises, LLC · CIK 0001701768 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 17,859,943

F1 · kind: In connection with certain redemptions of ownership interests in the Reporting Entity by certain of the Reporting Entity's members pursuant to the first amended and restated limited liability company agreement of the Reporting Entity, the Reporting Entity distributed Class B Common Stock to such members.

F1 · price: In connection with certain redemptions of ownership interests in the Reporting Entity by certain of the Reporting Entity's members pursuant to the first amended and restated limited liability company agreement of the Reporting Entity, the Reporting Entity distributed Class B Common Stock to such members.

SEC source: 0001104659-20-065886 · a4.xml · derivative · entry 2

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 17,859,943

Underlying: Class A Common Stock · 10,500 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.

F6 · kind: In connection with certain redemptions of ownership interests in Cactus Enterprises by certain of Cactus Enterprises' members pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises, Cactus Enterprises distributed Units to such members. The Reporting Person did not participate in the redemptions, and no Units were distributed to the Reporting Person or any entities controlled by the Reporting Person.

F6 · price: In connection with certain redemptions of ownership interests in Cactus Enterprises by certain of Cactus Enterprises' members pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises, Cactus Enterprises distributed Units to such members. The Reporting Person did not participate in the redemptions, and no Units were distributed to the Reporting Person or any entities controlled by the Reporting Person.

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.

F6 · derivative.expiration_date: In connection with certain redemptions of ownership interests in Cactus Enterprises by certain of Cactus Enterprises' members pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises, Cactus Enterprises distributed Units to such members. The Reporting Person did not participate in the redemptions, and no Units were distributed to the Reporting Person or any entities controlled by the Reporting Person.

F2 · 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.

F3 · ownership.nature: (Continued from footnote 2) 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.

F6 · ownership.nature: In connection with certain redemptions of ownership interests in Cactus Enterprises by certain of Cactus Enterprises' members pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises, Cactus Enterprises distributed Units to such members. The Reporting Person did not participate in the redemptions, and no Units were distributed to the Reporting Person or any entities controlled by the Reporting Person.

SEC source: 0001104659-20-065886 · a4.xml · nonDerivative · entry 1

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 17,859,943

F1 · kind: In connection with certain redemptions of ownership interests in Cactus WH Enterprises, LLC ("Cactus Enterprises") by certain of Cactus Enterprises' members pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises, Cactus Enterprises distributed Class B Common Stock to such members. The Reporting Person did not participate in the redemptions, and no shares of Class B Common Stock were distributed to the Reporting Person or any entities controlled by the Reporting Person.

F1 · price: In connection with certain redemptions of ownership interests in Cactus WH Enterprises, LLC ("Cactus Enterprises") by certain of Cactus Enterprises' members pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises, Cactus Enterprises distributed Class B Common Stock to such members. The Reporting Person did not participate in the redemptions, and no shares of Class B Common Stock were distributed to the Reporting Person or any entities controlled by the Reporting Person.

F2 · 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.

F3 · ownership.nature: (Continued from footnote 2) 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.

SEC source: 0001104659-20-065885 · a4.xml · derivative · entry 2

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 17,859,943

Underlying: Class A Common Stock · 10,500 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.

F6 · kind: In connection with certain redemptions of ownership interests in Cactus Enterprises by certain of Cactus Enterprises' members pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises, Cactus Enterprises distributed Units to such members. The Reporting Person did not participate in the redemptions, and no Units were distributed to the Reporting Person or any entities controlled by the Reporting Person.

F6 · price: In connection with certain redemptions of ownership interests in Cactus Enterprises by certain of Cactus Enterprises' members pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises, Cactus Enterprises distributed Units to such members. The Reporting Person did not participate in the redemptions, and no Units were distributed to the Reporting Person or any entities controlled by the Reporting Person.

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.

F6 · derivative.expiration_date: In connection with certain redemptions of ownership interests in Cactus Enterprises by certain of Cactus Enterprises' members pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises, Cactus Enterprises distributed Units to such members. The Reporting Person did not participate in the redemptions, and no Units were distributed to the Reporting Person or any entities controlled by the Reporting Person.

F2 · 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.

F3 · ownership.nature: (Continued from footnote 2) 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.

F6 · ownership.nature: In connection with certain redemptions of ownership interests in Cactus Enterprises by certain of Cactus Enterprises' members pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises, Cactus Enterprises distributed Units to such members. The Reporting Person did not participate in the redemptions, and no Units were distributed to the Reporting Person or any entities controlled by the Reporting Person.

SEC source: 0001104659-20-065885 · a4.xml · nonDerivative · entry 1

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 17,859,943

F1 · kind: In connection with certain redemptions of ownership interests in Cactus WH Enterprises, LLC ("Cactus Enterprises") by certain of Cactus Enterprises' members pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises, Cactus Enterprises distributed Class B Common Stock to such members. The Reporting Person did not participate in the redemptions, and no shares of Class B Common Stock were distributed to the Reporting Person or any entities controlled by the Reporting Person.

F1 · price: In connection with certain redemptions of ownership interests in Cactus WH Enterprises, LLC ("Cactus Enterprises") by certain of Cactus Enterprises' members pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises, Cactus Enterprises distributed Class B Common Stock to such members. The Reporting Person did not participate in the redemptions, and no shares of Class B Common Stock were distributed to the Reporting Person or any entities controlled by the Reporting Person.

F2 · 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.

F3 · ownership.nature: (Continued from footnote 2) 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.

SEC source: 0001104659-20-064321 · a4.xml · derivative · entry 2

Cactus WH Enterprises, LLC · CIK 0001701768 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 17,870,443

Underlying: Class A Common Stock · 63,913 shares

Expires not disclosed

F2 · security: "Units" mean ownership interests in Cactus Wellhead, LLC ("Cactus LLC"). The Issuer is the sole managing member of Cactus LLC.

F3 · 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.

F4 · kind: In connection with certain redemptions of ownership interests in the Reporting Entity by certain of the Reporting Entity's members pursuant to the first amended and restated limited liability company agreement of the Reporting Entity, the Reporting Entity distributed Units to such members.

F4 · price: In connection with certain redemptions of ownership interests in the Reporting Entity by certain of the Reporting Entity's members pursuant to the first amended and restated limited liability company agreement of the Reporting Entity, the Reporting Entity distributed Units to such members.

F3 · 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.

F4 · derivative.expiration_date: In connection with certain redemptions of ownership interests in the Reporting Entity by certain of the Reporting Entity's members pursuant to the first amended and restated limited liability company agreement of the Reporting Entity, the Reporting Entity distributed Units to such members.

SEC source: 0001104659-20-064321 · a4.xml · nonDerivative · entry 1

Cactus WH Enterprises, LLC · CIK 0001701768 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 17,870,443

F1 · kind: In connection with certain redemptions of ownership interests in the Reporting Entity by certain of the Reporting Entity's members pursuant to the first amended and restated limited liability company agreement of the Reporting Entity, the Reporting Entity distributed Class B Common Stock to such members.

F1 · price: In connection with certain redemptions of ownership interests in the Reporting Entity by certain of the Reporting Entity's members pursuant to the first amended and restated limited liability company agreement of the Reporting Entity, the Reporting Entity distributed Class B Common Stock to such members.

SEC source: 0001104659-20-064320 · a4.xml · derivative · entry 2

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 17,870,443

Underlying: Class A Common Stock · 63,913 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.

F6 · kind: In connection with certain redemptions of ownership interests in Cactus Enterprises by certain of Cactus Enterprises' members pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises, Cactus Enterprises distributed Units to such members. The Reporting Person did not participate in the redemptions, and no Units were distributed to the Reporting Person or any entities controlled by the Reporting Person.

F6 · price: In connection with certain redemptions of ownership interests in Cactus Enterprises by certain of Cactus Enterprises' members pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises, Cactus Enterprises distributed Units to such members. The Reporting Person did not participate in the redemptions, and no Units were distributed to the Reporting Person or any entities controlled by the Reporting Person.

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.

F6 · derivative.expiration_date: In connection with certain redemptions of ownership interests in Cactus Enterprises by certain of Cactus Enterprises' members pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises, Cactus Enterprises distributed Units to such members. The Reporting Person did not participate in the redemptions, and no Units were distributed to the Reporting Person or any entities controlled by the Reporting Person.

F2 · 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.

F3 · ownership.nature: (Continued from footnote 2) 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.

F6 · ownership.nature: In connection with certain redemptions of ownership interests in Cactus Enterprises by certain of Cactus Enterprises' members pursuant to the first amended and restated limited liability company agreement of Cactus Enterprises, Cactus Enterprises distributed Units to such members. The Reporting Person did not participate in the redemptions, and no Units were distributed to the Reporting Person or any entities controlled by the Reporting Person.