SEI

SEC source: 0002036327-25-000006 · form4-11062025_111146.xml · nonDerivative · entry 2

KTR Management Company, LLC · CIK 0002036327 · 10% owner

Tuma John · CIK 0002036391 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,114,783

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.

F2 · kind: Subject to the terms of the Second Amended and Restated Limited Liability Company Agreement of Solaris Energy Infrastructure, LLC ("Solaris LLC"), dated as of May 11, 2017, as amended from time to time, included as Exhibit 10.1 to the Issuer's Current Report on Form 8-K filed with the U.S. Securities and Exchange Commission (the "SEC") on May 17, 2017, units of Solaris LLC ("Solaris LLC Units") (together with a corresponding number of shares of the Issuer's Class B common stock) are exchangeable from time to time for shares of the Issuer's Class A common stock, par value $0.01 per share ("Class A common stock"). The shares of Class B common stock reported herein were cancelled for no consideration on a one-for-one basis upon the redemption by the reporting persons of its Solaris LLC Units (together with a corresponding number of shares of Class B common stock) for the shares of Class A common stock reported herein.

F2 · price: Subject to the terms of the Second Amended and Restated Limited Liability Company Agreement of Solaris Energy Infrastructure, LLC ("Solaris LLC"), dated as of May 11, 2017, as amended from time to time, included as Exhibit 10.1 to the Issuer's Current Report on Form 8-K filed with the U.S. Securities and Exchange Commission (the "SEC") on May 17, 2017, units of Solaris LLC ("Solaris LLC Units") (together with a corresponding number of shares of the Issuer's Class B common stock) are exchangeable from time to time for shares of the Issuer's Class A common stock, par value $0.01 per share ("Class A common stock"). The shares of Class B common stock reported herein were cancelled for no consideration on a one-for-one basis upon the redemption by the reporting persons of its Solaris LLC Units (together with a corresponding number of shares of Class B common stock) for the shares of Class A common stock reported herein.

F4 · ownership.direct: Represents securities held directly by KTR. John Tuma owns all of the issued and outstanding equity interests of KTR and has the sole authority to vote or dispose of the shares held by KTR in his sole discretion. Mr. Tuma may therefore be deemed to beneficially own the securities of the Issuer held directly by KTR.

SEC source: 0002036327-25-000006 · form4-11062025_111146.xml · nonDerivative · entry 1

KTR Management Company, LLC · CIK 0002036327 · 10% owner

Tuma John · CIK 0002036391 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,000,000

F1 · security: Each share of Class B common stock, par value $0.00 per share ("Class B common stock") of Solaris Energy Infrastructure, Inc. (the "Issuer") has no economic rights but entitles the holder to one vote on all matters to be voted on by the stockholders generally.

F2 · kind: Subject to the terms of the Second Amended and Restated Limited Liability Company Agreement of Solaris Energy Infrastructure, LLC ("Solaris LLC"), dated as of May 11, 2017, as amended from time to time, included as Exhibit 10.1 to the Issuer's Current Report on Form 8-K filed with the U.S. Securities and Exchange Commission (the "SEC") on May 17, 2017, units of Solaris LLC ("Solaris LLC Units") (together with a corresponding number of shares of the Issuer's Class B common stock) are exchangeable from time to time for shares of the Issuer's Class A common stock, par value $0.01 per share ("Class A common stock"). The shares of Class B common stock reported herein were cancelled for no consideration on a one-for-one basis upon the redemption by the reporting persons of its Solaris LLC Units (together with a corresponding number of shares of Class B common stock) for the shares of Class A common stock reported herein.

F2 · price: Subject to the terms of the Second Amended and Restated Limited Liability Company Agreement of Solaris Energy Infrastructure, LLC ("Solaris LLC"), dated as of May 11, 2017, as amended from time to time, included as Exhibit 10.1 to the Issuer's Current Report on Form 8-K filed with the U.S. Securities and Exchange Commission (the "SEC") on May 17, 2017, units of Solaris LLC ("Solaris LLC Units") (together with a corresponding number of shares of the Issuer's Class B common stock) are exchangeable from time to time for shares of the Issuer's Class A common stock, par value $0.01 per share ("Class A common stock"). The shares of Class B common stock reported herein were cancelled for no consideration on a one-for-one basis upon the redemption by the reporting persons of its Solaris LLC Units (together with a corresponding number of shares of Class B common stock) for the shares of Class A common stock reported herein.

F3 · balance_after: Includes securities received in connection with transactions contemplated by the Contribution Agreement, dated July 9, 2024, by and among the Issuer, Solaris LLC, John A. Johnson, John Tuma, J Turbines and KTR Management Company, LLC ("KTR"), a Texas limited liability company. On September 11, 2024, J Turbines and KTR each received, among other things, 8,114,783 shares of the Issuer's Class B common stock, together with a corresponding number of Solaris LLC Units in exchange for all of the issued and outstanding equity interests of Mobile Energy Rentals LLC, a Texas limited liability company, as more fully described in the Schedule 13D filed by the reporting persons with the SEC on September 13, 2024.

F4 · ownership.direct: Represents securities held directly by KTR. John Tuma owns all of the issued and outstanding equity interests of KTR and has the sole authority to vote or dispose of the shares held by KTR in his sole discretion. Mr. Tuma may therefore be deemed to beneficially own the securities of the Issuer held directly by KTR.

SEC source: 0002036327-25-000008 · form4a-11072025_041101.xml · derivative · entry 1

KTR Management Company, LLC · CIK 0002036327 · 10% owner

Tuma John · CIK 0002036391 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,000,000

Underlying: Class A Common Stock · 2,114,783 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 · security: Subject to the terms of the Second Amended and Restated Limited Liability Company Agreement of Solaris Energy Infrastructure, LLC ("Solaris LLC"), dated as of May 11, 2017, as amended from time to time, included as Exhibit 10.1 to the Issuer's Current Report on Form 8-K filed with the U.S. Securities and Exchange Commission (the "SEC") on May 17, 2017, units of Solaris LLC ("Solaris LLC Units") (together with a corresponding number of shares of the Issuer's Class B common stock) are exchangeable from time to time for shares of the Issuer's Class A common stock, par value $0.01 per share ("Class A common stock"). The shares of Class B common stock reported herein were cancelled for no consideration on a one-for-one basis upon the redemption by the reporting persons of its Solaris LLC Units (together with a corresponding number of shares of Class B common stock) for the shares of Class A common stock reported herein.

F1 · derivative.exercise_price: Subject to the terms of the Second Amended and Restated Limited Liability Company Agreement of Solaris Energy Infrastructure, LLC ("Solaris LLC"), dated as of May 11, 2017, as amended from time to time, included as Exhibit 10.1 to the Issuer's Current Report on Form 8-K filed with the U.S. Securities and Exchange Commission (the "SEC") on May 17, 2017, units of Solaris LLC ("Solaris LLC Units") (together with a corresponding number of shares of the Issuer's Class B common stock) are exchangeable from time to time for shares of the Issuer's Class A common stock, par value $0.01 per share ("Class A common stock"). The shares of Class B common stock reported herein were cancelled for no consideration on a one-for-one basis upon the redemption by the reporting persons of its Solaris LLC Units (together with a corresponding number of shares of Class B common stock) for the shares of Class A common stock reported herein.

F2 · date: The original Form 4, filed on November 6, 2025, is being amended by this Form 4 amendment solely to correct an administrative error, which inadvertently misreported the transaction date as November 6, 2025 when in fact, the transaction occurred on November 4, 2025.

F1 · kind: Subject to the terms of the Second Amended and Restated Limited Liability Company Agreement of Solaris Energy Infrastructure, LLC ("Solaris LLC"), dated as of May 11, 2017, as amended from time to time, included as Exhibit 10.1 to the Issuer's Current Report on Form 8-K filed with the U.S. Securities and Exchange Commission (the "SEC") on May 17, 2017, units of Solaris LLC ("Solaris LLC Units") (together with a corresponding number of shares of the Issuer's Class B common stock) are exchangeable from time to time for shares of the Issuer's Class A common stock, par value $0.01 per share ("Class A common stock"). The shares of Class B common stock reported herein were cancelled for no consideration on a one-for-one basis upon the redemption by the reporting persons of its Solaris LLC Units (together with a corresponding number of shares of Class B common stock) for the shares of Class A common stock reported herein.

F1 · derivative.exercise_date: Subject to the terms of the Second Amended and Restated Limited Liability Company Agreement of Solaris Energy Infrastructure, LLC ("Solaris LLC"), dated as of May 11, 2017, as amended from time to time, included as Exhibit 10.1 to the Issuer's Current Report on Form 8-K filed with the U.S. Securities and Exchange Commission (the "SEC") on May 17, 2017, units of Solaris LLC ("Solaris LLC Units") (together with a corresponding number of shares of the Issuer's Class B common stock) are exchangeable from time to time for shares of the Issuer's Class A common stock, par value $0.01 per share ("Class A common stock"). The shares of Class B common stock reported herein were cancelled for no consideration on a one-for-one basis upon the redemption by the reporting persons of its Solaris LLC Units (together with a corresponding number of shares of Class B common stock) for the shares of Class A common stock reported herein.

F1 · derivative.expiration_date: Subject to the terms of the Second Amended and Restated Limited Liability Company Agreement of Solaris Energy Infrastructure, LLC ("Solaris LLC"), dated as of May 11, 2017, as amended from time to time, included as Exhibit 10.1 to the Issuer's Current Report on Form 8-K filed with the U.S. Securities and Exchange Commission (the "SEC") on May 17, 2017, units of Solaris LLC ("Solaris LLC Units") (together with a corresponding number of shares of the Issuer's Class B common stock) are exchangeable from time to time for shares of the Issuer's Class A common stock, par value $0.01 per share ("Class A common stock"). The shares of Class B common stock reported herein were cancelled for no consideration on a one-for-one basis upon the redemption by the reporting persons of its Solaris LLC Units (together with a corresponding number of shares of Class B common stock) for the shares of Class A common stock reported herein.

F3 · ownership.direct: Represents securities held directly by KTR. John Tuma owns all of the issued and outstanding equity interests of KTR and has the sole authority to vote or dispose of the shares held by KTR in his sole discretion. Mr. Tuma may therefore be deemed to beneficially own the securities of the Issuer held directly by KTR.

SEC source: 0001714868-25-000010 · form4-10172025_081045.xml · nonDerivative · entry 1

Brock Amanda M · CIK 0001714868 · Director · Co-Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 137,411

F1 · shares: Restricted Stock Award pursuant to the Solaris Energy Infrastructure, Inc. Long Term Incentive Plan. The award vests in three equal annual installments on the first three anniversaries from November 15, 2025.

F2 · balance_after: Includes 125,000 shares of Class A common stock subject to previously granted Restricted Stock Awards that remain subject to vesting.

SEC source: 0001415889-25-024358 · form4-09122025_080912.xml · nonDerivative · entry 1

BURKE JAMES R · CIK 0001227489 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 16,973

F1 · price: The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $29.19 to $29.29 per share. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the U.S. Securities and Exchange Commission (the "SEC"), upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F2 · balance_after: Includes 5,696 shares of Class A common stock subject to previously granted Restricted Stock Awards that remain subject to vesting.

SEC source: 0001415889-25-023973 · form4-09092025_080917.xml · nonDerivative · entry 1

Zartler William A · CIK 0001520378 · Director · CHAIRMAN AND CEO · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,049,227

F1 · price: The reported price in Column 4 is a weighted average purchase price. These shares were purchased in multiple transactions at prices ranging from $24.80 to $24.84 per share. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the U.S. Securities and Exchange Commission (the "SEC"), upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F2 · balance_after: Includes 450,381 shares of Class A common stock from previously granted Restricted Stock Awards that remain subject to vesting.

SEC source: 0001415889-25-023972 · form4-09092025_080949.xml · nonDerivative · entry 1

Ramachandran Kyle S. · CIK 0001705386 · PRESIDENT AND CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 370,338

F1 · balance_after: Includes 158,808 shares of Class A common stock from previously granted Restricted Stock Awards that remain subject to vesting.

SEC source: 0001415889-25-023216 · form4-08282025_080806.xml · nonDerivative · entry 1

Powell Christopher M · CIK 0001710164 · CHIEF LEGAL OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 130,615

F1 · balance_after: Includes 85,467 shares of Class A common stock from previously granted Restricted Stock Awards that remain subject to vesting.

SEC source: 0001415889-25-023024 · form4-08262025_040801.xml · nonDerivative · entry 2

Giesinger Edgar R. JR. · CIK 0001658831 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 90,956

F3 · price: The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $28.67 to $29.19 per share. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the U.S. Securities and Exchange Commission (the "SEC"), upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F2 · balance_after: Includes 6,052 shares of Class A common stock subject to previously granted Restricted Stock Awards that remain subject to vesting.

SEC source: 0001415889-25-023024 · form4-08262025_040801.xml · nonDerivative · entry 1

Giesinger Edgar R. JR. · CIK 0001658831 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 100,956

F1 · shares: Restricted Stock Award pursuant to the Solaris Energy Infrastructure, Inc. Long Term Incentive Plan. The award vests in full on the first anniversary of the grant date.

F2 · balance_after: Includes 6,052 shares of Class A common stock subject to previously granted Restricted Stock Awards that remain subject to vesting.

SEC source: 0001415889-25-023028 · form4-08262025_040808.xml · nonDerivative · entry 1

Walker Ray N JR · CIK 0001483960 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 62,601

F1 · shares: Restricted Stock Award pursuant to the Solaris Energy Infrastructure, Inc. Long Term Incentive Plan. The award vests in full on the first anniversary of the grant date.

F2 · balance_after: Includes 5,696 shares of Class A common stock subject to previously granted Restricted Stock Awards that remain subject to vesting.

SEC source: 0001415889-25-023026 · form4-08262025_040805.xml · nonDerivative · entry 1

TEAGUE AJ · CIK 0001183251 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 104,155

F1 · shares: Restricted Stock Award pursuant to the Solaris Energy Infrastructure, Inc. Long Term Incentive Plan. The award vests in full on the first anniversary of the grant date.

F2 · balance_after: Includes 5,696 shares of Class A common stock subject to previously granted Restricted Stock Awards that remain subject to vesting.

SEC source: 0001415889-25-023030 · form4-08262025_040812.xml · nonDerivative · entry 1

BURKE JAMES R · CIK 0001227489 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 21,973

F1 · shares: Restricted Stock Award pursuant to the Solaris Energy Infrastructure, Inc. Long Term Incentive Plan. The award vests in full on the first anniversary of the grant date.

F2 · balance_after: Includes 5,696 shares of Class A common stock subject to previously granted Restricted Stock Awards that remain subject to vesting.

SEC source: 0001415889-25-023029 · form4-08262025_040810.xml · nonDerivative · entry 1

YZAGUIRRE MARIO MAX · CIK 0001198626 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,324

F1 · shares: Restricted Stock Award pursuant to the Solaris Energy Infrastructure, Inc. Long Term Incentive Plan. The award vests in full on the first anniversary of the grant date.

F2 · balance_after: Includes 8,324 shares of Class A common stock subject to previously granted Restricted Stock Awards that remain subject to vesting.

SEC source: 0001415889-25-023027 · form4-08262025_040806.xml · nonDerivative · entry 1

Keenan W Howard JR · CIK 0001370287 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 89,050

F1 · shares: Restricted Stock Award pursuant to the Solaris Energy Infrastructure, Inc. Long Term Incentive Plan. The award vests in full on the first anniversary of the grant date.

F2 · balance_after: Includes 5,518 shares of Class A common stock subject to previously granted Restricted Stock Awards that remain subject to vesting.

SEC source: 0001415889-25-023025 · form4-08262025_040803.xml · nonDerivative · entry 1

Argo Laurie H · CIK 0001622230 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 52,339

F1 · shares: Restricted Stock Award pursuant to the Solaris Energy Infrastructure, Inc. Long Term Incentive Plan. The award vests in full on the first anniversary of the grant date.

F2 · balance_after: Includes 6,275 shares of Class A common stock subject to previously granted Restricted Stock Awards that remain subject to vesting.

SEC source: 0001415889-25-021336 · form4-08082025_040801.xml · derivative · entry 4

KTR Management Company, LLC · CIK 0002036327 · 10% owner

Tuma John · CIK 0002036391 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,114,783

Underlying: Class A Common Stock · 4,000,000 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.

F2 · security: Subject to the terms of the Second Amended and Restated Limited Liability Company Agreement of Solaris Energy Infrastructure, LLC ("Solaris LLC"), dated as of May 11, 2017, as amended from time to time, included as Exhibit 10.1 to the Issuer's Current Report on Form 8-K filed with the U.S. Securities and Exchange Commission (the "SEC") on May 17, 2017, units of Solaris LLC ("Solaris LLC Units") (together with a corresponding number of shares of the Issuer's Class B common stock) are exchangeable from time to time for shares of the Issuer's Class A common stock, par value $0.01 per share ("Class A common stock"). The shares of Class B common stock reported herein were cancelled for no consideration on a one-for-one basis upon the redemption by the reporting persons of its Solaris LLC Units (together with a corresponding number of shares of Class B common stock) for the shares of Class A common stock reported herein.

F2 · derivative.exercise_price: Subject to the terms of the Second Amended and Restated Limited Liability Company Agreement of Solaris Energy Infrastructure, LLC ("Solaris LLC"), dated as of May 11, 2017, as amended from time to time, included as Exhibit 10.1 to the Issuer's Current Report on Form 8-K filed with the U.S. Securities and Exchange Commission (the "SEC") on May 17, 2017, units of Solaris LLC ("Solaris LLC Units") (together with a corresponding number of shares of the Issuer's Class B common stock) are exchangeable from time to time for shares of the Issuer's Class A common stock, par value $0.01 per share ("Class A common stock"). The shares of Class B common stock reported herein were cancelled for no consideration on a one-for-one basis upon the redemption by the reporting persons of its Solaris LLC Units (together with a corresponding number of shares of Class B common stock) for the shares of Class A common stock reported herein.

F2 · kind: Subject to the terms of the Second Amended and Restated Limited Liability Company Agreement of Solaris Energy Infrastructure, LLC ("Solaris LLC"), dated as of May 11, 2017, as amended from time to time, included as Exhibit 10.1 to the Issuer's Current Report on Form 8-K filed with the U.S. Securities and Exchange Commission (the "SEC") on May 17, 2017, units of Solaris LLC ("Solaris LLC Units") (together with a corresponding number of shares of the Issuer's Class B common stock) are exchangeable from time to time for shares of the Issuer's Class A common stock, par value $0.01 per share ("Class A common stock"). The shares of Class B common stock reported herein were cancelled for no consideration on a one-for-one basis upon the redemption by the reporting persons of its Solaris LLC Units (together with a corresponding number of shares of Class B common stock) for the shares of Class A common stock reported herein.

F2 · derivative.exercise_date: Subject to the terms of the Second Amended and Restated Limited Liability Company Agreement of Solaris Energy Infrastructure, LLC ("Solaris LLC"), dated as of May 11, 2017, as amended from time to time, included as Exhibit 10.1 to the Issuer's Current Report on Form 8-K filed with the U.S. Securities and Exchange Commission (the "SEC") on May 17, 2017, units of Solaris LLC ("Solaris LLC Units") (together with a corresponding number of shares of the Issuer's Class B common stock) are exchangeable from time to time for shares of the Issuer's Class A common stock, par value $0.01 per share ("Class A common stock"). The shares of Class B common stock reported herein were cancelled for no consideration on a one-for-one basis upon the redemption by the reporting persons of its Solaris LLC Units (together with a corresponding number of shares of Class B common stock) for the shares of Class A common stock reported herein.

F2 · derivative.expiration_date: Subject to the terms of the Second Amended and Restated Limited Liability Company Agreement of Solaris Energy Infrastructure, LLC ("Solaris LLC"), dated as of May 11, 2017, as amended from time to time, included as Exhibit 10.1 to the Issuer's Current Report on Form 8-K filed with the U.S. Securities and Exchange Commission (the "SEC") on May 17, 2017, units of Solaris LLC ("Solaris LLC Units") (together with a corresponding number of shares of the Issuer's Class B common stock) are exchangeable from time to time for shares of the Issuer's Class A common stock, par value $0.01 per share ("Class A common stock"). The shares of Class B common stock reported herein were cancelled for no consideration on a one-for-one basis upon the redemption by the reporting persons of its Solaris LLC Units (together with a corresponding number of shares of Class B common stock) for the shares of Class A common stock reported herein.

F4 · ownership.direct: Represents securities held directly by KTR. John Tuma owns all of the issued and outstanding equity interests of KTR and has the sole authority to vote or dispose of the shares held by KTR in his sole discretion. Mr. Tuma may therefore be deemed to beneficially own the securities of the Issuer held directly by KTR.

SEC source: 0001415889-25-021336 · form4-08082025_040801.xml · nonDerivative · entry 3

KTR Management Company, LLC · CIK 0002036327 · 10% owner

Tuma John · CIK 0002036391 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

SEC source: 0001415889-25-021336 · form4-08082025_040801.xml · nonDerivative · entry 2

KTR Management Company, LLC · CIK 0002036327 · 10% owner

Tuma John · CIK 0002036391 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,000,000

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.

F2 · kind: Subject to the terms of the Second Amended and Restated Limited Liability Company Agreement of Solaris Energy Infrastructure, LLC ("Solaris LLC"), dated as of May 11, 2017, as amended from time to time, included as Exhibit 10.1 to the Issuer's Current Report on Form 8-K filed with the U.S. Securities and Exchange Commission (the "SEC") on May 17, 2017, units of Solaris LLC ("Solaris LLC Units") (together with a corresponding number of shares of the Issuer's Class B common stock) are exchangeable from time to time for shares of the Issuer's Class A common stock, par value $0.01 per share ("Class A common stock"). The shares of Class B common stock reported herein were cancelled for no consideration on a one-for-one basis upon the redemption by the reporting persons of its Solaris LLC Units (together with a corresponding number of shares of Class B common stock) for the shares of Class A common stock reported herein.

F2 · price: Subject to the terms of the Second Amended and Restated Limited Liability Company Agreement of Solaris Energy Infrastructure, LLC ("Solaris LLC"), dated as of May 11, 2017, as amended from time to time, included as Exhibit 10.1 to the Issuer's Current Report on Form 8-K filed with the U.S. Securities and Exchange Commission (the "SEC") on May 17, 2017, units of Solaris LLC ("Solaris LLC Units") (together with a corresponding number of shares of the Issuer's Class B common stock) are exchangeable from time to time for shares of the Issuer's Class A common stock, par value $0.01 per share ("Class A common stock"). The shares of Class B common stock reported herein were cancelled for no consideration on a one-for-one basis upon the redemption by the reporting persons of its Solaris LLC Units (together with a corresponding number of shares of Class B common stock) for the shares of Class A common stock reported herein.

F4 · ownership.direct: Represents securities held directly by KTR. John Tuma owns all of the issued and outstanding equity interests of KTR and has the sole authority to vote or dispose of the shares held by KTR in his sole discretion. Mr. Tuma may therefore be deemed to beneficially own the securities of the Issuer held directly by KTR.

SEC source: 0001415889-25-021336 · form4-08082025_040801.xml · nonDerivative · entry 1

KTR Management Company, LLC · CIK 0002036327 · 10% owner

Tuma John · CIK 0002036391 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,114,783

F1 · security: Each share of Class B common stock, par value $0.00 per share ("Class B common stock") of Solaris Energy Infrastructure, Inc. (the "Issuer") has no economic rights but entitles the holder to one vote on all matters to be voted on by the stockholders generally.

F2 · kind: Subject to the terms of the Second Amended and Restated Limited Liability Company Agreement of Solaris Energy Infrastructure, LLC ("Solaris LLC"), dated as of May 11, 2017, as amended from time to time, included as Exhibit 10.1 to the Issuer's Current Report on Form 8-K filed with the U.S. Securities and Exchange Commission (the "SEC") on May 17, 2017, units of Solaris LLC ("Solaris LLC Units") (together with a corresponding number of shares of the Issuer's Class B common stock) are exchangeable from time to time for shares of the Issuer's Class A common stock, par value $0.01 per share ("Class A common stock"). The shares of Class B common stock reported herein were cancelled for no consideration on a one-for-one basis upon the redemption by the reporting persons of its Solaris LLC Units (together with a corresponding number of shares of Class B common stock) for the shares of Class A common stock reported herein.

F2 · price: Subject to the terms of the Second Amended and Restated Limited Liability Company Agreement of Solaris Energy Infrastructure, LLC ("Solaris LLC"), dated as of May 11, 2017, as amended from time to time, included as Exhibit 10.1 to the Issuer's Current Report on Form 8-K filed with the U.S. Securities and Exchange Commission (the "SEC") on May 17, 2017, units of Solaris LLC ("Solaris LLC Units") (together with a corresponding number of shares of the Issuer's Class B common stock) are exchangeable from time to time for shares of the Issuer's Class A common stock, par value $0.01 per share ("Class A common stock"). The shares of Class B common stock reported herein were cancelled for no consideration on a one-for-one basis upon the redemption by the reporting persons of its Solaris LLC Units (together with a corresponding number of shares of Class B common stock) for the shares of Class A common stock reported herein.

F3 · balance_after: Includes securities received in connection with transactions contemplated by the Contribution Agreement, dated July 9, 2024, by and among the Issuer, Solaris LLC, John A. Johnson, John Tuma, J Turbines and KTR Management Company, LLC ("KTR"), a Texas limited liability company. On September 11, 2024, J Turbines and KTR each received, among other things, 8,114,783 shares of the Issuer's Class B common stock, together with a corresponding number of Solaris LLC Units in exchange for all of the issued and outstanding equity interests of Mobile Energy Rentals LLC, a Texas limited liability company, as more fully described in the Schedule 13D filed by the reporting persons with the SEC on September 13, 2024.

F4 · ownership.direct: Represents securities held directly by KTR. John Tuma owns all of the issued and outstanding equity interests of KTR and has the sole authority to vote or dispose of the shares held by KTR in his sole discretion. Mr. Tuma may therefore be deemed to beneficially own the securities of the Issuer held directly by KTR.

SEC source: 0001415889-25-020603 · form4-07302025_080711.xml · derivative · entry 4

J Turbines, Inc. · CIK 0002036326 · 10% owner

Johnson John Abraham · CIK 0002036656 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,114,783

Underlying: Class A Common Stock · 4,000,000 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.

F2 · security: Subject to the terms of the Second Amended and Restated Limited Liability Company Agreement of Solaris Energy Infrastructure, LLC ("Solaris LLC"), dated as of May 11, 2017, as amended from time to time, included as Exhibit 10.1 to the Issuer's Current Report on Form 8-K filed with the U.S. Securities and Exchange Commission (the "SEC") on May 17, 2017, units of Solaris LLC ("Solaris LLC Units") (together with a corresponding number of shares of the Issuer's Class B common stock) are exchangeable from time to time for shares of the Issuer's Class A common stock, par value $0.01 per share ("Class A common stock"). The shares of Class B common stock reported herein were cancelled for no consideration on a one-for-one basis upon the redemption by the reporting persons of its Solaris LLC Units (together with a corresponding number of shares of Class B common stock) for the shares of Class A common stock reported herein.

F2 · derivative.exercise_price: Subject to the terms of the Second Amended and Restated Limited Liability Company Agreement of Solaris Energy Infrastructure, LLC ("Solaris LLC"), dated as of May 11, 2017, as amended from time to time, included as Exhibit 10.1 to the Issuer's Current Report on Form 8-K filed with the U.S. Securities and Exchange Commission (the "SEC") on May 17, 2017, units of Solaris LLC ("Solaris LLC Units") (together with a corresponding number of shares of the Issuer's Class B common stock) are exchangeable from time to time for shares of the Issuer's Class A common stock, par value $0.01 per share ("Class A common stock"). The shares of Class B common stock reported herein were cancelled for no consideration on a one-for-one basis upon the redemption by the reporting persons of its Solaris LLC Units (together with a corresponding number of shares of Class B common stock) for the shares of Class A common stock reported herein.

F2 · kind: Subject to the terms of the Second Amended and Restated Limited Liability Company Agreement of Solaris Energy Infrastructure, LLC ("Solaris LLC"), dated as of May 11, 2017, as amended from time to time, included as Exhibit 10.1 to the Issuer's Current Report on Form 8-K filed with the U.S. Securities and Exchange Commission (the "SEC") on May 17, 2017, units of Solaris LLC ("Solaris LLC Units") (together with a corresponding number of shares of the Issuer's Class B common stock) are exchangeable from time to time for shares of the Issuer's Class A common stock, par value $0.01 per share ("Class A common stock"). The shares of Class B common stock reported herein were cancelled for no consideration on a one-for-one basis upon the redemption by the reporting persons of its Solaris LLC Units (together with a corresponding number of shares of Class B common stock) for the shares of Class A common stock reported herein.

F2 · derivative.exercise_date: Subject to the terms of the Second Amended and Restated Limited Liability Company Agreement of Solaris Energy Infrastructure, LLC ("Solaris LLC"), dated as of May 11, 2017, as amended from time to time, included as Exhibit 10.1 to the Issuer's Current Report on Form 8-K filed with the U.S. Securities and Exchange Commission (the "SEC") on May 17, 2017, units of Solaris LLC ("Solaris LLC Units") (together with a corresponding number of shares of the Issuer's Class B common stock) are exchangeable from time to time for shares of the Issuer's Class A common stock, par value $0.01 per share ("Class A common stock"). The shares of Class B common stock reported herein were cancelled for no consideration on a one-for-one basis upon the redemption by the reporting persons of its Solaris LLC Units (together with a corresponding number of shares of Class B common stock) for the shares of Class A common stock reported herein.

F2 · derivative.expiration_date: Subject to the terms of the Second Amended and Restated Limited Liability Company Agreement of Solaris Energy Infrastructure, LLC ("Solaris LLC"), dated as of May 11, 2017, as amended from time to time, included as Exhibit 10.1 to the Issuer's Current Report on Form 8-K filed with the U.S. Securities and Exchange Commission (the "SEC") on May 17, 2017, units of Solaris LLC ("Solaris LLC Units") (together with a corresponding number of shares of the Issuer's Class B common stock) are exchangeable from time to time for shares of the Issuer's Class A common stock, par value $0.01 per share ("Class A common stock"). The shares of Class B common stock reported herein were cancelled for no consideration on a one-for-one basis upon the redemption by the reporting persons of its Solaris LLC Units (together with a corresponding number of shares of Class B common stock) for the shares of Class A common stock reported herein.

F5 · balance_after: After giving effect to the disposition reported herein, the Reporting Persons ceased to be a 10% Owner and are no longer subject to Section 16 of the Securities Exchange Act of 1934, as amended.

F4 · ownership.direct: Represents securities held directly by J Turbines. John A. Johnson owns all of the issued and outstanding equity interests of J Turbines and has the sole authority to vote or dispose of the shares held by J Turbines in his sole discretion. Mr. Johnson may therefore be deemed to beneficially own the securities of the Issuer held directly by J Turbines.

SEC source: 0001415889-25-020603 · form4-07302025_080711.xml · nonDerivative · entry 3

J Turbines, Inc. · CIK 0002036326 · 10% owner

Johnson John Abraham · CIK 0002036656 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

SEC source: 0001415889-25-020603 · form4-07302025_080711.xml · nonDerivative · entry 2

J Turbines, Inc. · CIK 0002036326 · 10% owner

Johnson John Abraham · CIK 0002036656 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,000,000

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.

F2 · kind: Subject to the terms of the Second Amended and Restated Limited Liability Company Agreement of Solaris Energy Infrastructure, LLC ("Solaris LLC"), dated as of May 11, 2017, as amended from time to time, included as Exhibit 10.1 to the Issuer's Current Report on Form 8-K filed with the U.S. Securities and Exchange Commission (the "SEC") on May 17, 2017, units of Solaris LLC ("Solaris LLC Units") (together with a corresponding number of shares of the Issuer's Class B common stock) are exchangeable from time to time for shares of the Issuer's Class A common stock, par value $0.01 per share ("Class A common stock"). The shares of Class B common stock reported herein were cancelled for no consideration on a one-for-one basis upon the redemption by the reporting persons of its Solaris LLC Units (together with a corresponding number of shares of Class B common stock) for the shares of Class A common stock reported herein.

F2 · price: Subject to the terms of the Second Amended and Restated Limited Liability Company Agreement of Solaris Energy Infrastructure, LLC ("Solaris LLC"), dated as of May 11, 2017, as amended from time to time, included as Exhibit 10.1 to the Issuer's Current Report on Form 8-K filed with the U.S. Securities and Exchange Commission (the "SEC") on May 17, 2017, units of Solaris LLC ("Solaris LLC Units") (together with a corresponding number of shares of the Issuer's Class B common stock) are exchangeable from time to time for shares of the Issuer's Class A common stock, par value $0.01 per share ("Class A common stock"). The shares of Class B common stock reported herein were cancelled for no consideration on a one-for-one basis upon the redemption by the reporting persons of its Solaris LLC Units (together with a corresponding number of shares of Class B common stock) for the shares of Class A common stock reported herein.

F4 · ownership.direct: Represents securities held directly by J Turbines. John A. Johnson owns all of the issued and outstanding equity interests of J Turbines and has the sole authority to vote or dispose of the shares held by J Turbines in his sole discretion. Mr. Johnson may therefore be deemed to beneficially own the securities of the Issuer held directly by J Turbines.

SEC source: 0001415889-25-020603 · form4-07302025_080711.xml · nonDerivative · entry 1

J Turbines, Inc. · CIK 0002036326 · 10% owner

Johnson John Abraham · CIK 0002036656 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,114,783

F1 · security: Each share of Class B common stock, par value $0.00 per share ("Class B common stock") of Solaris Energy Infrastructure, Inc. (the "Issuer") has no economic rights but entitles the holder to one vote on all matters to be voted on by the stockholders generally.

F2 · kind: Subject to the terms of the Second Amended and Restated Limited Liability Company Agreement of Solaris Energy Infrastructure, LLC ("Solaris LLC"), dated as of May 11, 2017, as amended from time to time, included as Exhibit 10.1 to the Issuer's Current Report on Form 8-K filed with the U.S. Securities and Exchange Commission (the "SEC") on May 17, 2017, units of Solaris LLC ("Solaris LLC Units") (together with a corresponding number of shares of the Issuer's Class B common stock) are exchangeable from time to time for shares of the Issuer's Class A common stock, par value $0.01 per share ("Class A common stock"). The shares of Class B common stock reported herein were cancelled for no consideration on a one-for-one basis upon the redemption by the reporting persons of its Solaris LLC Units (together with a corresponding number of shares of Class B common stock) for the shares of Class A common stock reported herein.

F2 · price: Subject to the terms of the Second Amended and Restated Limited Liability Company Agreement of Solaris Energy Infrastructure, LLC ("Solaris LLC"), dated as of May 11, 2017, as amended from time to time, included as Exhibit 10.1 to the Issuer's Current Report on Form 8-K filed with the U.S. Securities and Exchange Commission (the "SEC") on May 17, 2017, units of Solaris LLC ("Solaris LLC Units") (together with a corresponding number of shares of the Issuer's Class B common stock) are exchangeable from time to time for shares of the Issuer's Class A common stock, par value $0.01 per share ("Class A common stock"). The shares of Class B common stock reported herein were cancelled for no consideration on a one-for-one basis upon the redemption by the reporting persons of its Solaris LLC Units (together with a corresponding number of shares of Class B common stock) for the shares of Class A common stock reported herein.

F3 · balance_after: Includes securities received in connection with transactions contemplated by the Contribution Agreement, dated July 9, 2024, by and among the Issuer, Solaris LLC, John A. Johnson, John Tuma, J Turbines and KTR Management Company, LLC ("KTR"), a Texas limited liability company. On September 11, 2024, J Turbines and KTR each received, among other things, 8,114,783 shares of the Issuer's Class B common stock, together with a corresponding number of Solaris LLC Units in exchange for all of the issued and outstanding equity interests of Mobile Energy Rentals LLC, a Texas limited liability company, as more fully described in the Schedule 13D filed by the reporting persons with the SEC on September 13, 2024.

F4 · ownership.direct: Represents securities held directly by J Turbines. John A. Johnson owns all of the issued and outstanding equity interests of J Turbines and has the sole authority to vote or dispose of the shares held by J Turbines in his sole discretion. Mr. Johnson may therefore be deemed to beneficially own the securities of the Issuer held directly by J Turbines.

SEC source: 0001415889-25-015856 · form4-06062025_120602.xml · nonDerivative · entry 4

J Turbines, Inc. · CIK 0002036326 · 10% owner

Johnson John Abraham · CIK 0002036656 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

F3 · kind: In connection with the sales on June 4, 2025 and June 5, 2025, J Turbines, Inc. ("J Turbines") (i) converted 150,000 shares of the Issuer's Class B common stock and an equal number of Solaris LLC Units into 150,000 shares of the Issuer's Class A common stock and (ii) sold 75,000 shares of the Issuer's Class A common stock at a price of $27.56 per share on June 4, 2025, and 75,000 shares of the Issuer's Class A common stock at a weighted average price of $28.10 per share on June 5, 2025. These shares were sold in multiple transactions at prices ranging from $27.90 to $28.35. The reporting person undertakes to provide the staff of the Securities and Exchange Commission, the Issuer, or any security holder of the Issuer, upon request, full information regarding the number of shares sold on June 5, 2025 at each separate price within the range.

F3 · price: In connection with the sales on June 4, 2025 and June 5, 2025, J Turbines, Inc. ("J Turbines") (i) converted 150,000 shares of the Issuer's Class B common stock and an equal number of Solaris LLC Units into 150,000 shares of the Issuer's Class A common stock and (ii) sold 75,000 shares of the Issuer's Class A common stock at a price of $27.56 per share on June 4, 2025, and 75,000 shares of the Issuer's Class A common stock at a weighted average price of $28.10 per share on June 5, 2025. These shares were sold in multiple transactions at prices ranging from $27.90 to $28.35. The reporting person undertakes to provide the staff of the Securities and Exchange Commission, the Issuer, or any security holder of the Issuer, upon request, full information regarding the number of shares sold on June 5, 2025 at each separate price within the range.

F5 · ownership.direct: Represents securities held directly by J Turbines. John A. Johnson owns all of the issued and outstanding equity interests of J Turbines and has the sole authority to vote or dispose of the shares held by J Turbines in his sole discretion. Mr. Johnson may therefore be deemed to beneficially own the securities of the Issuer held directly by J Turbines.

SEC source: 0001415889-25-015856 · form4-06062025_120602.xml · nonDerivative · entry 3

J Turbines, Inc. · CIK 0002036326 · 10% owner

Johnson John Abraham · CIK 0002036656 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 75,000

F3 · kind: In connection with the sales on June 4, 2025 and June 5, 2025, J Turbines, Inc. ("J Turbines") (i) converted 150,000 shares of the Issuer's Class B common stock and an equal number of Solaris LLC Units into 150,000 shares of the Issuer's Class A common stock and (ii) sold 75,000 shares of the Issuer's Class A common stock at a price of $27.56 per share on June 4, 2025, and 75,000 shares of the Issuer's Class A common stock at a weighted average price of $28.10 per share on June 5, 2025. These shares were sold in multiple transactions at prices ranging from $27.90 to $28.35. The reporting person undertakes to provide the staff of the Securities and Exchange Commission, the Issuer, or any security holder of the Issuer, upon request, full information regarding the number of shares sold on June 5, 2025 at each separate price within the range.

F3 · price: In connection with the sales on June 4, 2025 and June 5, 2025, J Turbines, Inc. ("J Turbines") (i) converted 150,000 shares of the Issuer's Class B common stock and an equal number of Solaris LLC Units into 150,000 shares of the Issuer's Class A common stock and (ii) sold 75,000 shares of the Issuer's Class A common stock at a price of $27.56 per share on June 4, 2025, and 75,000 shares of the Issuer's Class A common stock at a weighted average price of $28.10 per share on June 5, 2025. These shares were sold in multiple transactions at prices ranging from $27.90 to $28.35. The reporting person undertakes to provide the staff of the Securities and Exchange Commission, the Issuer, or any security holder of the Issuer, upon request, full information regarding the number of shares sold on June 5, 2025 at each separate price within the range.

F5 · ownership.direct: Represents securities held directly by J Turbines. John A. Johnson owns all of the issued and outstanding equity interests of J Turbines and has the sole authority to vote or dispose of the shares held by J Turbines in his sole discretion. Mr. Johnson may therefore be deemed to beneficially own the securities of the Issuer held directly by J Turbines.

SEC source: 0001415889-25-015856 · form4-06062025_120602.xml · derivative · entry 5

J Turbines, Inc. · CIK 0002036326 · 10% owner

Johnson John Abraham · CIK 0002036656 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 6,114,783

Underlying: Class A Common Stock · 150,000 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.

F2 · security: Subject to the terms of the Second Amended and Restated Limited Liability Company Agreement of Solaris Energy Infrastructure, LLC ("Solaris LLC"), dated as of May 11, 2017, as amended from time to time, included as Exhibit 10.1 to the Issuer's Current Report on Form 8-K filed with the U.S. Securities and Exchange Commission (the "SEC") on May 17, 2017, units of Solaris LLC ("Solaris LLC Units") (together with a corresponding number of shares of the Issuer's Class B common stock) are exchangeable from time to time for shares of the Issuer's Class A common stock, par value $0.01 per share ("Class A common stock"). The shares of Class B common stock reported herein were cancelled for no consideration on a one-for-one basis upon the redemption by the reporting persons of its Solaris LLC Units (together with a corresponding number of shares of Class B common stock) for the shares of Class A common stock reported herein.

F3 · security: In connection with the sales on June 4, 2025 and June 5, 2025, J Turbines, Inc. ("J Turbines") (i) converted 150,000 shares of the Issuer's Class B common stock and an equal number of Solaris LLC Units into 150,000 shares of the Issuer's Class A common stock and (ii) sold 75,000 shares of the Issuer's Class A common stock at a price of $27.56 per share on June 4, 2025, and 75,000 shares of the Issuer's Class A common stock at a weighted average price of $28.10 per share on June 5, 2025. These shares were sold in multiple transactions at prices ranging from $27.90 to $28.35. The reporting person undertakes to provide the staff of the Securities and Exchange Commission, the Issuer, or any security holder of the Issuer, upon request, full information regarding the number of shares sold on June 5, 2025 at each separate price within the range.

F2 · derivative.exercise_price: Subject to the terms of the Second Amended and Restated Limited Liability Company Agreement of Solaris Energy Infrastructure, LLC ("Solaris LLC"), dated as of May 11, 2017, as amended from time to time, included as Exhibit 10.1 to the Issuer's Current Report on Form 8-K filed with the U.S. Securities and Exchange Commission (the "SEC") on May 17, 2017, units of Solaris LLC ("Solaris LLC Units") (together with a corresponding number of shares of the Issuer's Class B common stock) are exchangeable from time to time for shares of the Issuer's Class A common stock, par value $0.01 per share ("Class A common stock"). The shares of Class B common stock reported herein were cancelled for no consideration on a one-for-one basis upon the redemption by the reporting persons of its Solaris LLC Units (together with a corresponding number of shares of Class B common stock) for the shares of Class A common stock reported herein.

F2 · kind: Subject to the terms of the Second Amended and Restated Limited Liability Company Agreement of Solaris Energy Infrastructure, LLC ("Solaris LLC"), dated as of May 11, 2017, as amended from time to time, included as Exhibit 10.1 to the Issuer's Current Report on Form 8-K filed with the U.S. Securities and Exchange Commission (the "SEC") on May 17, 2017, units of Solaris LLC ("Solaris LLC Units") (together with a corresponding number of shares of the Issuer's Class B common stock) are exchangeable from time to time for shares of the Issuer's Class A common stock, par value $0.01 per share ("Class A common stock"). The shares of Class B common stock reported herein were cancelled for no consideration on a one-for-one basis upon the redemption by the reporting persons of its Solaris LLC Units (together with a corresponding number of shares of Class B common stock) for the shares of Class A common stock reported herein.

F3 · kind: In connection with the sales on June 4, 2025 and June 5, 2025, J Turbines, Inc. ("J Turbines") (i) converted 150,000 shares of the Issuer's Class B common stock and an equal number of Solaris LLC Units into 150,000 shares of the Issuer's Class A common stock and (ii) sold 75,000 shares of the Issuer's Class A common stock at a price of $27.56 per share on June 4, 2025, and 75,000 shares of the Issuer's Class A common stock at a weighted average price of $28.10 per share on June 5, 2025. These shares were sold in multiple transactions at prices ranging from $27.90 to $28.35. The reporting person undertakes to provide the staff of the Securities and Exchange Commission, the Issuer, or any security holder of the Issuer, upon request, full information regarding the number of shares sold on June 5, 2025 at each separate price within the range.

F2 · derivative.exercise_date: Subject to the terms of the Second Amended and Restated Limited Liability Company Agreement of Solaris Energy Infrastructure, LLC ("Solaris LLC"), dated as of May 11, 2017, as amended from time to time, included as Exhibit 10.1 to the Issuer's Current Report on Form 8-K filed with the U.S. Securities and Exchange Commission (the "SEC") on May 17, 2017, units of Solaris LLC ("Solaris LLC Units") (together with a corresponding number of shares of the Issuer's Class B common stock) are exchangeable from time to time for shares of the Issuer's Class A common stock, par value $0.01 per share ("Class A common stock"). The shares of Class B common stock reported herein were cancelled for no consideration on a one-for-one basis upon the redemption by the reporting persons of its Solaris LLC Units (together with a corresponding number of shares of Class B common stock) for the shares of Class A common stock reported herein.

F2 · derivative.expiration_date: Subject to the terms of the Second Amended and Restated Limited Liability Company Agreement of Solaris Energy Infrastructure, LLC ("Solaris LLC"), dated as of May 11, 2017, as amended from time to time, included as Exhibit 10.1 to the Issuer's Current Report on Form 8-K filed with the U.S. Securities and Exchange Commission (the "SEC") on May 17, 2017, units of Solaris LLC ("Solaris LLC Units") (together with a corresponding number of shares of the Issuer's Class B common stock) are exchangeable from time to time for shares of the Issuer's Class A common stock, par value $0.01 per share ("Class A common stock"). The shares of Class B common stock reported herein were cancelled for no consideration on a one-for-one basis upon the redemption by the reporting persons of its Solaris LLC Units (together with a corresponding number of shares of Class B common stock) for the shares of Class A common stock reported herein.

F5 · ownership.direct: Represents securities held directly by J Turbines. John A. Johnson owns all of the issued and outstanding equity interests of J Turbines and has the sole authority to vote or dispose of the shares held by J Turbines in his sole discretion. Mr. Johnson may therefore be deemed to beneficially own the securities of the Issuer held directly by J Turbines.

SEC source: 0001415889-25-015856 · form4-06062025_120602.xml · nonDerivative · entry 2

J Turbines, Inc. · CIK 0002036326 · 10% owner

Johnson John Abraham · CIK 0002036656 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 150,000

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.

F2 · kind: Subject to the terms of the Second Amended and Restated Limited Liability Company Agreement of Solaris Energy Infrastructure, LLC ("Solaris LLC"), dated as of May 11, 2017, as amended from time to time, included as Exhibit 10.1 to the Issuer's Current Report on Form 8-K filed with the U.S. Securities and Exchange Commission (the "SEC") on May 17, 2017, units of Solaris LLC ("Solaris LLC Units") (together with a corresponding number of shares of the Issuer's Class B common stock) are exchangeable from time to time for shares of the Issuer's Class A common stock, par value $0.01 per share ("Class A common stock"). The shares of Class B common stock reported herein were cancelled for no consideration on a one-for-one basis upon the redemption by the reporting persons of its Solaris LLC Units (together with a corresponding number of shares of Class B common stock) for the shares of Class A common stock reported herein.

F3 · kind: In connection with the sales on June 4, 2025 and June 5, 2025, J Turbines, Inc. ("J Turbines") (i) converted 150,000 shares of the Issuer's Class B common stock and an equal number of Solaris LLC Units into 150,000 shares of the Issuer's Class A common stock and (ii) sold 75,000 shares of the Issuer's Class A common stock at a price of $27.56 per share on June 4, 2025, and 75,000 shares of the Issuer's Class A common stock at a weighted average price of $28.10 per share on June 5, 2025. These shares were sold in multiple transactions at prices ranging from $27.90 to $28.35. The reporting person undertakes to provide the staff of the Securities and Exchange Commission, the Issuer, or any security holder of the Issuer, upon request, full information regarding the number of shares sold on June 5, 2025 at each separate price within the range.

F2 · price: Subject to the terms of the Second Amended and Restated Limited Liability Company Agreement of Solaris Energy Infrastructure, LLC ("Solaris LLC"), dated as of May 11, 2017, as amended from time to time, included as Exhibit 10.1 to the Issuer's Current Report on Form 8-K filed with the U.S. Securities and Exchange Commission (the "SEC") on May 17, 2017, units of Solaris LLC ("Solaris LLC Units") (together with a corresponding number of shares of the Issuer's Class B common stock) are exchangeable from time to time for shares of the Issuer's Class A common stock, par value $0.01 per share ("Class A common stock"). The shares of Class B common stock reported herein were cancelled for no consideration on a one-for-one basis upon the redemption by the reporting persons of its Solaris LLC Units (together with a corresponding number of shares of Class B common stock) for the shares of Class A common stock reported herein.

F5 · ownership.direct: Represents securities held directly by J Turbines. John A. Johnson owns all of the issued and outstanding equity interests of J Turbines and has the sole authority to vote or dispose of the shares held by J Turbines in his sole discretion. Mr. Johnson may therefore be deemed to beneficially own the securities of the Issuer held directly by J Turbines.

SEC source: 0001415889-25-015856 · form4-06062025_120602.xml · nonDerivative · entry 1

J Turbines, Inc. · CIK 0002036326 · 10% owner

Johnson John Abraham · CIK 0002036656 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 6,114,783

F1 · security: Each share of Class B common stock, par value $0.00 per share ("Class B common stock") of Solaris Energy Infrastructure, Inc. (the "Issuer") has no economic rights but entitles the holder to one vote on all matters to be voted on by the stockholders generally.

F2 · kind: Subject to the terms of the Second Amended and Restated Limited Liability Company Agreement of Solaris Energy Infrastructure, LLC ("Solaris LLC"), dated as of May 11, 2017, as amended from time to time, included as Exhibit 10.1 to the Issuer's Current Report on Form 8-K filed with the U.S. Securities and Exchange Commission (the "SEC") on May 17, 2017, units of Solaris LLC ("Solaris LLC Units") (together with a corresponding number of shares of the Issuer's Class B common stock) are exchangeable from time to time for shares of the Issuer's Class A common stock, par value $0.01 per share ("Class A common stock"). The shares of Class B common stock reported herein were cancelled for no consideration on a one-for-one basis upon the redemption by the reporting persons of its Solaris LLC Units (together with a corresponding number of shares of Class B common stock) for the shares of Class A common stock reported herein.

F3 · kind: In connection with the sales on June 4, 2025 and June 5, 2025, J Turbines, Inc. ("J Turbines") (i) converted 150,000 shares of the Issuer's Class B common stock and an equal number of Solaris LLC Units into 150,000 shares of the Issuer's Class A common stock and (ii) sold 75,000 shares of the Issuer's Class A common stock at a price of $27.56 per share on June 4, 2025, and 75,000 shares of the Issuer's Class A common stock at a weighted average price of $28.10 per share on June 5, 2025. These shares were sold in multiple transactions at prices ranging from $27.90 to $28.35. The reporting person undertakes to provide the staff of the Securities and Exchange Commission, the Issuer, or any security holder of the Issuer, upon request, full information regarding the number of shares sold on June 5, 2025 at each separate price within the range.

F2 · price: Subject to the terms of the Second Amended and Restated Limited Liability Company Agreement of Solaris Energy Infrastructure, LLC ("Solaris LLC"), dated as of May 11, 2017, as amended from time to time, included as Exhibit 10.1 to the Issuer's Current Report on Form 8-K filed with the U.S. Securities and Exchange Commission (the "SEC") on May 17, 2017, units of Solaris LLC ("Solaris LLC Units") (together with a corresponding number of shares of the Issuer's Class B common stock) are exchangeable from time to time for shares of the Issuer's Class A common stock, par value $0.01 per share ("Class A common stock"). The shares of Class B common stock reported herein were cancelled for no consideration on a one-for-one basis upon the redemption by the reporting persons of its Solaris LLC Units (together with a corresponding number of shares of Class B common stock) for the shares of Class A common stock reported herein.

F4 · balance_after: Includes securities received in connection with transactions contemplated by the Contribution Agreement, dated July 9, 2024, by and among the Issuer, Solaris LLC, John A. Johnson, John Tuma, J Turbines and KTR Management Company, LLC ("KTR"), a Texas limited liability company. On September 11, 2024, J Turbines and KTR each received, among other things, 8,114,783 shares of the Issuer's Class B common stock, together with a corresponding number of Solaris LLC Units in exchange for all of the issued and outstanding equity interests of Mobile Energy Rentals LLC, a Texas limited liability company, as more fully described in the Schedule 13D filed by the reporting persons with the SEC on September 13, 2024.

F5 · ownership.direct: Represents securities held directly by J Turbines. John A. Johnson owns all of the issued and outstanding equity interests of J Turbines and has the sole authority to vote or dispose of the shares held by J Turbines in his sole discretion. Mr. Johnson may therefore be deemed to beneficially own the securities of the Issuer held directly by J Turbines.

SEC source: 0001415889-25-015282 · form4-06022025_100648.xml · nonDerivative · entry 1

Wirtz Christopher P. · CIK 0001979735 · CHIEF ACCOUNTING OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 33,881

F1 · shares: Represents shares withheld by the Company to satisfy tax withholding obligations upon the vesting of previously granted Restricted Stock Awards.

F2 · balance_after: Includes 21,743 shares of Class A common stock from previously granted Restricted Stock Awards that remain subject to vesting.

SEC source: 0001415889-25-014598 · form4-05272025_080523.xml · nonDerivative · entry 2

TEAGUE AJ · CIK 0001183251 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · Spouse

Disclosed balance after: 6,000

F3 · price: The reported price in Column 4 is a weighted average purchase price. These shares were purchased in multiple transactions at prices ranging from $26.72 to $26.73 per share. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

SEC source: 0001415889-25-014598 · form4-05272025_080523.xml · nonDerivative · entry 1

TEAGUE AJ · CIK 0001183251 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 98,459

F1 · price: The reported price in Column 4 is a weighted average purchase price. These shares were purchased in multiple transactions at prices ranging from $26.75 to $26.77 per share. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the U.S. Securities and Exchange Commission (the "SEC"), upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F2 · balance_after: Includes 12,372 shares of Class A common stock subject to previously granted Restricted Stock Awards that remain subject to vesting.

SEC source: 0001415889-25-014050 · form4-05222025_030543.xml · nonDerivative · entry 1

Zartler William A · CIK 0001520378 · Director · CHAIRMAN AND CEO · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,039,227

F1 · balance_after: Includes 450,381 shares of Class A common stock from previously granted Restricted Stock Awards that remain subject to vesting.

SEC source: 0000950170-25-066193 · ownership.xml · derivative · entry 4

J Turbines, Inc. · CIK 0002036326 · 10% owner

Johnson John Abraham · CIK 0002036656 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 6,264,783

Underlying: Class A Common Stock · 1,850,000 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.

F2 · security: Subject to the terms of the Second Amended and Restated Limited Liability Company Agreement of Solaris Energy Infrastructure, LLC ("Solaris LLC"), dated as of May 11, 2017, as amended from time to time, included as Exhibit 10.1 to the Issuer's Current Report on Form 8-K filed with the U.S. Securities and Exchange Commission (the "SEC") on May 17, 2017, units of Solaris LLC ("Solaris LLC Units") (together with a corresponding number of shares of the Issuer's Class B common stock) are exchangeable from time to time for shares of the Issuer's Class A common stock, par value $0.01 per share ("Class A common stock"). The shares of Class B common stock reported herein were cancelled for no consideration on a one-for-one basis upon the redemption by the reporting persons of its Solaris LLC Units (together with a corresponding number of shares of Class B common stock) for the shares of Class A common stock reported herein.

F3 · security: In connection with the sale on May 5, 2025, J Turbines, Inc. ("J Turbines") (i) converted 1,850,000 shares of the Issuer's Class B common stock and an equal number of Solaris LLC Units into 1,850,000 shares of the Issuer's Class A common stock and (ii) sold 1,850,000 shares of the Issuer's Class A common stock at a price per share of $20.60.

F2 · derivative.exercise_price: Subject to the terms of the Second Amended and Restated Limited Liability Company Agreement of Solaris Energy Infrastructure, LLC ("Solaris LLC"), dated as of May 11, 2017, as amended from time to time, included as Exhibit 10.1 to the Issuer's Current Report on Form 8-K filed with the U.S. Securities and Exchange Commission (the "SEC") on May 17, 2017, units of Solaris LLC ("Solaris LLC Units") (together with a corresponding number of shares of the Issuer's Class B common stock) are exchangeable from time to time for shares of the Issuer's Class A common stock, par value $0.01 per share ("Class A common stock"). The shares of Class B common stock reported herein were cancelled for no consideration on a one-for-one basis upon the redemption by the reporting persons of its Solaris LLC Units (together with a corresponding number of shares of Class B common stock) for the shares of Class A common stock reported herein.

F2 · kind: Subject to the terms of the Second Amended and Restated Limited Liability Company Agreement of Solaris Energy Infrastructure, LLC ("Solaris LLC"), dated as of May 11, 2017, as amended from time to time, included as Exhibit 10.1 to the Issuer's Current Report on Form 8-K filed with the U.S. Securities and Exchange Commission (the "SEC") on May 17, 2017, units of Solaris LLC ("Solaris LLC Units") (together with a corresponding number of shares of the Issuer's Class B common stock) are exchangeable from time to time for shares of the Issuer's Class A common stock, par value $0.01 per share ("Class A common stock"). The shares of Class B common stock reported herein were cancelled for no consideration on a one-for-one basis upon the redemption by the reporting persons of its Solaris LLC Units (together with a corresponding number of shares of Class B common stock) for the shares of Class A common stock reported herein.

F3 · kind: In connection with the sale on May 5, 2025, J Turbines, Inc. ("J Turbines") (i) converted 1,850,000 shares of the Issuer's Class B common stock and an equal number of Solaris LLC Units into 1,850,000 shares of the Issuer's Class A common stock and (ii) sold 1,850,000 shares of the Issuer's Class A common stock at a price per share of $20.60.

F2 · derivative.exercise_date: Subject to the terms of the Second Amended and Restated Limited Liability Company Agreement of Solaris Energy Infrastructure, LLC ("Solaris LLC"), dated as of May 11, 2017, as amended from time to time, included as Exhibit 10.1 to the Issuer's Current Report on Form 8-K filed with the U.S. Securities and Exchange Commission (the "SEC") on May 17, 2017, units of Solaris LLC ("Solaris LLC Units") (together with a corresponding number of shares of the Issuer's Class B common stock) are exchangeable from time to time for shares of the Issuer's Class A common stock, par value $0.01 per share ("Class A common stock"). The shares of Class B common stock reported herein were cancelled for no consideration on a one-for-one basis upon the redemption by the reporting persons of its Solaris LLC Units (together with a corresponding number of shares of Class B common stock) for the shares of Class A common stock reported herein.

F2 · derivative.expiration_date: Subject to the terms of the Second Amended and Restated Limited Liability Company Agreement of Solaris Energy Infrastructure, LLC ("Solaris LLC"), dated as of May 11, 2017, as amended from time to time, included as Exhibit 10.1 to the Issuer's Current Report on Form 8-K filed with the U.S. Securities and Exchange Commission (the "SEC") on May 17, 2017, units of Solaris LLC ("Solaris LLC Units") (together with a corresponding number of shares of the Issuer's Class B common stock) are exchangeable from time to time for shares of the Issuer's Class A common stock, par value $0.01 per share ("Class A common stock"). The shares of Class B common stock reported herein were cancelled for no consideration on a one-for-one basis upon the redemption by the reporting persons of its Solaris LLC Units (together with a corresponding number of shares of Class B common stock) for the shares of Class A common stock reported herein.

F5 · ownership.direct: Represents securities held directly by J Turbines. John A. Johnson owns all of the issued and outstanding equity interests of J Turbines and has the sole authority to vote or dispose of the shares held by J Turbines in his sole discretion. Mr. Johnson may therefore be deemed to beneficially own the securities of the Issuer held directly by J Turbines.

SEC source: 0000950170-25-066193 · ownership.xml · nonDerivative · entry 3

J Turbines, Inc. · CIK 0002036326 · 10% owner

Johnson John Abraham · CIK 0002036656 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

F3 · kind: In connection with the sale on May 5, 2025, J Turbines, Inc. ("J Turbines") (i) converted 1,850,000 shares of the Issuer's Class B common stock and an equal number of Solaris LLC Units into 1,850,000 shares of the Issuer's Class A common stock and (ii) sold 1,850,000 shares of the Issuer's Class A common stock at a price per share of $20.60.

F3 · price: In connection with the sale on May 5, 2025, J Turbines, Inc. ("J Turbines") (i) converted 1,850,000 shares of the Issuer's Class B common stock and an equal number of Solaris LLC Units into 1,850,000 shares of the Issuer's Class A common stock and (ii) sold 1,850,000 shares of the Issuer's Class A common stock at a price per share of $20.60.

F5 · ownership.direct: Represents securities held directly by J Turbines. John A. Johnson owns all of the issued and outstanding equity interests of J Turbines and has the sole authority to vote or dispose of the shares held by J Turbines in his sole discretion. Mr. Johnson may therefore be deemed to beneficially own the securities of the Issuer held directly by J Turbines.

SEC source: 0000950170-25-066193 · ownership.xml · nonDerivative · entry 2

J Turbines, Inc. · CIK 0002036326 · 10% owner

Johnson John Abraham · CIK 0002036656 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,850,000

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.

F2 · kind: Subject to the terms of the Second Amended and Restated Limited Liability Company Agreement of Solaris Energy Infrastructure, LLC ("Solaris LLC"), dated as of May 11, 2017, as amended from time to time, included as Exhibit 10.1 to the Issuer's Current Report on Form 8-K filed with the U.S. Securities and Exchange Commission (the "SEC") on May 17, 2017, units of Solaris LLC ("Solaris LLC Units") (together with a corresponding number of shares of the Issuer's Class B common stock) are exchangeable from time to time for shares of the Issuer's Class A common stock, par value $0.01 per share ("Class A common stock"). The shares of Class B common stock reported herein were cancelled for no consideration on a one-for-one basis upon the redemption by the reporting persons of its Solaris LLC Units (together with a corresponding number of shares of Class B common stock) for the shares of Class A common stock reported herein.

F3 · kind: In connection with the sale on May 5, 2025, J Turbines, Inc. ("J Turbines") (i) converted 1,850,000 shares of the Issuer's Class B common stock and an equal number of Solaris LLC Units into 1,850,000 shares of the Issuer's Class A common stock and (ii) sold 1,850,000 shares of the Issuer's Class A common stock at a price per share of $20.60.

F2 · price: Subject to the terms of the Second Amended and Restated Limited Liability Company Agreement of Solaris Energy Infrastructure, LLC ("Solaris LLC"), dated as of May 11, 2017, as amended from time to time, included as Exhibit 10.1 to the Issuer's Current Report on Form 8-K filed with the U.S. Securities and Exchange Commission (the "SEC") on May 17, 2017, units of Solaris LLC ("Solaris LLC Units") (together with a corresponding number of shares of the Issuer's Class B common stock) are exchangeable from time to time for shares of the Issuer's Class A common stock, par value $0.01 per share ("Class A common stock"). The shares of Class B common stock reported herein were cancelled for no consideration on a one-for-one basis upon the redemption by the reporting persons of its Solaris LLC Units (together with a corresponding number of shares of Class B common stock) for the shares of Class A common stock reported herein.

F5 · ownership.direct: Represents securities held directly by J Turbines. John A. Johnson owns all of the issued and outstanding equity interests of J Turbines and has the sole authority to vote or dispose of the shares held by J Turbines in his sole discretion. Mr. Johnson may therefore be deemed to beneficially own the securities of the Issuer held directly by J Turbines.

SEC source: 0000950170-25-066193 · ownership.xml · nonDerivative · entry 1

J Turbines, Inc. · CIK 0002036326 · 10% owner

Johnson John Abraham · CIK 0002036656 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 6,264,783

F1 · security: Each share of Class B common stock, par value $0.00 per share ("Class B common stock") of Solaris Energy Infrastructure, Inc. (the "Issuer") has no economic rights but entitles the holder to one vote on all matters to be voted on by the stockholders generally.

F2 · kind: Subject to the terms of the Second Amended and Restated Limited Liability Company Agreement of Solaris Energy Infrastructure, LLC ("Solaris LLC"), dated as of May 11, 2017, as amended from time to time, included as Exhibit 10.1 to the Issuer's Current Report on Form 8-K filed with the U.S. Securities and Exchange Commission (the "SEC") on May 17, 2017, units of Solaris LLC ("Solaris LLC Units") (together with a corresponding number of shares of the Issuer's Class B common stock) are exchangeable from time to time for shares of the Issuer's Class A common stock, par value $0.01 per share ("Class A common stock"). The shares of Class B common stock reported herein were cancelled for no consideration on a one-for-one basis upon the redemption by the reporting persons of its Solaris LLC Units (together with a corresponding number of shares of Class B common stock) for the shares of Class A common stock reported herein.

F3 · kind: In connection with the sale on May 5, 2025, J Turbines, Inc. ("J Turbines") (i) converted 1,850,000 shares of the Issuer's Class B common stock and an equal number of Solaris LLC Units into 1,850,000 shares of the Issuer's Class A common stock and (ii) sold 1,850,000 shares of the Issuer's Class A common stock at a price per share of $20.60.

F2 · price: Subject to the terms of the Second Amended and Restated Limited Liability Company Agreement of Solaris Energy Infrastructure, LLC ("Solaris LLC"), dated as of May 11, 2017, as amended from time to time, included as Exhibit 10.1 to the Issuer's Current Report on Form 8-K filed with the U.S. Securities and Exchange Commission (the "SEC") on May 17, 2017, units of Solaris LLC ("Solaris LLC Units") (together with a corresponding number of shares of the Issuer's Class B common stock) are exchangeable from time to time for shares of the Issuer's Class A common stock, par value $0.01 per share ("Class A common stock"). The shares of Class B common stock reported herein were cancelled for no consideration on a one-for-one basis upon the redemption by the reporting persons of its Solaris LLC Units (together with a corresponding number of shares of Class B common stock) for the shares of Class A common stock reported herein.

F4 · balance_after: Includes securities received in connection with transactions contemplated by the Contribution Agreement, dated July 9, 2024, by and among the Issuer, Solaris LLC, John A. Johnson, John Tuma, J Turbines and KTR Management Company, LLC ("KTR"), a Texas limited liability company. On September 11, 2024, J Turbines and KTR each received, among other things, 8,114,783 shares of the Issuer's Class B common stock, together with a corresponding number of Solaris LLC Units in exchange for all of the issued and outstanding equity interests of Mobile Energy Rentals LLC, a Texas limited liability company, as more fully described in the Schedule 13D filed by the reporting persons with the SEC on September 13, 2024.

F5 · ownership.direct: Represents securities held directly by J Turbines. John A. Johnson owns all of the issued and outstanding equity interests of J Turbines and has the sole authority to vote or dispose of the shares held by J Turbines in his sole discretion. Mr. Johnson may therefore be deemed to beneficially own the securities of the Issuer held directly by J Turbines.

SEC source: 0001415889-25-011880 · form4-05032025_010556.xml · nonDerivative · entry 2

TEAGUE AJ · CIK 0001183251 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · Spouse

Disclosed balance after: 5,000

F3 · price: The reported price in Column 4 is a weighted average purchase price. These shares were purchased in multiple transactions at prices ranging from $22.60 to $22.62 per share. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

SEC source: 0001415889-25-011880 · form4-05032025_010556.xml · nonDerivative · entry 1

TEAGUE AJ · CIK 0001183251 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 97,459

F1 · price: The reported price in Column 4 is a weighted average purchase price. These shares were purchased in multiple transactions at prices ranging from $22.56 to $22.58 per share. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the U.S. Securities and Exchange Commission (the "SEC"), upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F2 · balance_after: Includes 12,372 shares of Class A common stock subject to previously granted Restricted Stock Awards that remain subject to vesting.

SEC source: 0001415889-25-007761 · form4-03122025_040316.xml · nonDerivative · entry 1

Argo Laurie H · CIK 0001622230 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 46,064

F1 · balance_after: Includes 13,225 shares of Class A common stock subject to previously granted Restricted Stock Awards that remain subject to vesting.

SEC source: 0001415889-25-007362 · form4-03072025_080305.xml · nonDerivative · entry 1

Zartler William A · CIK 0001520378 · Director · CHAIRMAN AND CEO · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,029,227

F1 · balance_after: Includes 450,381 shares of Class A common stock from previously granted Restricted Stock Awards that remain subject to vesting.

SEC source: 0001415889-25-007345 · form4-03072025_060320.xml · nonDerivative · entry 2

TEAGUE AJ · CIK 0001183251 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · Spouse

Disclosed balance after: 100,459

F3 · price: The reported price in Column 4 is a weighted average purchase price. These shares were purchased in multiple transactions at prices ranging from $24.16 to $24.19 per share. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F2 · balance_after: Includes 12,372 shares of Class A common stock subject to previously granted Restricted Stock Awards that remain subject to vesting.

SEC source: 0001415889-25-007345 · form4-03072025_060320.xml · nonDerivative · entry 1

TEAGUE AJ · CIK 0001183251 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 98,459

F1 · price: The reported price in Column 4 is a weighted average purchase price. These shares were purchased in multiple transactions at prices ranging from $23.99 to $24.02 per share. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F2 · balance_after: Includes 12,372 shares of Class A common stock subject to previously granted Restricted Stock Awards that remain subject to vesting.

SEC source: 0001415889-25-007347 · form4-03072025_070314.xml · nonDerivative · entry 1

BURKE JAMES R · CIK 0001227489 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · Spouse

Disclosed balance after: 800

SEC source: 0001415889-25-007343 · form4-03072025_060321.xml · nonDerivative · entry 1

Zartler William A · CIK 0001520378 · Director · CHAIRMAN AND CEO · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,019,227

F1 · balance_after: Includes 450,381 shares of Class A common stock from previously granted Restricted Stock Awards that remain subject to vesting.

SEC source: 0001415889-25-007595 · form4a-03102025_110323.xml · nonDerivative · entry 2

TEAGUE AJ · CIK 0001183251 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · Spouse

Disclosed balance after: 102,459

F1 · kind: The original Form 4, filed on March 7, 2025, is being amended by this Form 4 amendment solely to correct an administrative error, which misreported the purchase of 2,000 shares of Class A Common Stock using transaction code of "A" when in fact this was an open market purchase with transaction code of "P".

F4 · price: The reported price in Column 4 is a weighted average purchase price. These shares were purchased in multiple transactions at prices ranging from $24.16 to $24.19 per share. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F3 · balance_after: Includes 12,372 shares of Class A common stock subject to previously granted Restricted Stock Awards that remain subject to vesting.

SEC source: 0001415889-25-007595 · form4a-03102025_110323.xml · nonDerivative · entry 1

TEAGUE AJ · CIK 0001183251 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 98,459

F1 · kind: The original Form 4, filed on March 7, 2025, is being amended by this Form 4 amendment solely to correct an administrative error, which misreported the purchase of 2,000 shares of Class A Common Stock using transaction code of "A" when in fact this was an open market purchase with transaction code of "P".

F2 · price: The reported price in Column 4 is a weighted average purchase price. These shares were purchased in multiple transactions at prices ranging from $23.99 to $24.02 per share. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F3 · balance_after: Includes 12,372 shares of Class A common stock subject to previously granted Restricted Stock Awards that remain subject to vesting.

SEC source: 0001415889-25-007593 · form4a-03102025_110352.xml · nonDerivative · entry 1

BURKE JAMES R · CIK 0001227489 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · Spouse

Disclosed balance after: 800

F1 · kind: The original Form 4, filed on March 7, 2025, is being amended by this Form 4 amendment solely to correct an administrative error, which misreported the purchase of 800 shares of Class A Common Stock using transaction code of "A" when in fact this was an open market purchase with transaction code of "P".

SEC source: 0001415889-25-007591 · form4a-03102025_110309.xml · nonDerivative · entry 1

Zartler William A · CIK 0001520378 · Director · CHAIRMAN AND CEO · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,019,227

F1 · kind: The original Form 4, filed on March 7, 2025, is being amended by this Form 4 amendment solely to correct an administrative error, which misreported the purchase of 10,000 shares of Class A Common Stock using transaction code of "A" when in fact this was an open market purchase with transaction code of "P".

F2 · balance_after: Includes 450,381 shares of Class A common stock from previously granted Restricted Stock Awards that remain subject to vesting.

SEC source: 0000950170-25-055870 · ownership.xml · nonDerivative · entry 2

TEAGUE AJ · CIK 0001183251 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · Spouse

Disclosed balance after: 4,000

F5 · price: The reported price in Column 4 is a weighted average purchase price. These shares were purchased in multiple transactions at prices ranging from $24.16 to $24.19 per share. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F3 · ownership.direct: On March 7, 2025, the reporting person filed a Form 4 (the "Original Form 4") with the SEC. On March 10, 2025, the reporting person filed with the SEC an amendment on Form 4/A (the "First Amendment") solely to correct an administrative error which misreported the purchases of a collective 4,000 shares of Class A common stock using the transaction code of "A," when in fact this was an open market purchase with transaction code of "P," however, the Original Form 4 also mistakenly reported that the reporting person's spouse indirectly held 100,459 shares of Class A common stock and the First Amendment then mistakenly reported that the reporting person's spouse indirectly held 102,459 shares of Class A common stock.

F4 · ownership.direct: (Continued from footnote 3) This second amendment on Form 4/A (this "Second Amendment") is being filed to correct the ownership in both the Original Form 4 and the First Amendment to show that the reporting person (i) directly holds 96,459 shares of Class A common stock following the reporting person's purchase of an additional 2,000 shares of Class A common stock in an open market purchase on March 6, 2025 and (ii) indirectly owns 4,000 shares of Class A common stock following the purchase of an additional 2,000 shares of Class A common stock in an open market purchase on March 6, 2025 by the reporting person's spouse.