NPWR

SEC source: 0001213900-23-048017 · ownership.xml · derivative · entry 3

Fox Carrie M · CIK 0001840838 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Class A Ordinary Shares · 30,000 shares

Expires not disclosed

F3 · derivative.exercise_price: For each Class B Unit of RONI Opco, the reporting person owned a corresponding Class B Ordinary Share. The Class B Units of RONI Opco were convertible into Class A Units of RONI Opco pursuant to the terms of the limited liability agreement of RONI Opco. The Class A Units of RONI Opco (together with the corresponding Class B Ordinary Shares) were exchangeable into Class A Ordinary Shares or cash, at RONI's election, after the time of RONI's initial business combination on a one-for-one basis and had no expiration date.

F1 · kind: Pursuant to that certain Business Combination Agreement, dated December 13, 2022, and subsequently amended on April 23, 2023, by and among Rice Acquisition Corp. II ("RONI"), Rice Acquisition Holdings II LLC ("RONI Opco"), NET Power, LLC and the other parties thereto, the parties effected a business combination transaction (the "Business Combination") on June 8, 2023. In connection with the Business Combination, on June 8, 2023, RONI domesticated as a Delaware corporation (the "RONI Domestication") and changed its name to "NET Power Inc." ("NET Power") and RONI Opco domesticated as a Delaware limited liability company (together with the RONI Domestication, the "Domestication") and changed its name to "NET Power Operations LLC" ("Opco").

F2 · kind: As a result of the Domestication on June 8, 2023, (a) each issued and outstanding Class A ordinary share, par value $0.0001 per share, of RONI ("Class A Ordinary Share") automatically converted on a one-for-one basis into a share of Class A common stock, par value $0.0001 per share, of NET Power ("Class A Common Stock"), (b) each issued and outstanding Class B ordinary shares, par value $0.0001 per share, of RONI ("Class B Ordinary Share") automatically converted on a one-for-one basis into a share of Class B common stock, par value $0.0001 per share, of NET Power ("Class B Common Stock") and (c) each issued and outstanding Class A Unit and Class B Unit of RONI Opco automatically converted on a one-for-one basis into a Class A or Class B Unit of Opco, respectively.

F3 · price: For each Class B Unit of RONI Opco, the reporting person owned a corresponding Class B Ordinary Share. The Class B Units of RONI Opco were convertible into Class A Units of RONI Opco pursuant to the terms of the limited liability agreement of RONI Opco. The Class A Units of RONI Opco (together with the corresponding Class B Ordinary Shares) were exchangeable into Class A Ordinary Shares or cash, at RONI's election, after the time of RONI's initial business combination on a one-for-one basis and had no expiration date.

F3 · derivative.exercise_date: For each Class B Unit of RONI Opco, the reporting person owned a corresponding Class B Ordinary Share. The Class B Units of RONI Opco were convertible into Class A Units of RONI Opco pursuant to the terms of the limited liability agreement of RONI Opco. The Class A Units of RONI Opco (together with the corresponding Class B Ordinary Shares) were exchangeable into Class A Ordinary Shares or cash, at RONI's election, after the time of RONI's initial business combination on a one-for-one basis and had no expiration date.

F3 · derivative.expiration_date: For each Class B Unit of RONI Opco, the reporting person owned a corresponding Class B Ordinary Share. The Class B Units of RONI Opco were convertible into Class A Units of RONI Opco pursuant to the terms of the limited liability agreement of RONI Opco. The Class A Units of RONI Opco (together with the corresponding Class B Ordinary Shares) were exchangeable into Class A Ordinary Shares or cash, at RONI's election, after the time of RONI's initial business combination on a one-for-one basis and had no expiration date.

SEC source: 0001213900-23-048017 · ownership.xml · nonDerivative · entry 2

Fox Carrie M · CIK 0001840838 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 30,000

F1 · price: Pursuant to that certain Business Combination Agreement, dated December 13, 2022, and subsequently amended on April 23, 2023, by and among Rice Acquisition Corp. II ("RONI"), Rice Acquisition Holdings II LLC ("RONI Opco"), NET Power, LLC and the other parties thereto, the parties effected a business combination transaction (the "Business Combination") on June 8, 2023. In connection with the Business Combination, on June 8, 2023, RONI domesticated as a Delaware corporation (the "RONI Domestication") and changed its name to "NET Power Inc." ("NET Power") and RONI Opco domesticated as a Delaware limited liability company (together with the RONI Domestication, the "Domestication") and changed its name to "NET Power Operations LLC" ("Opco").

F2 · price: As a result of the Domestication on June 8, 2023, (a) each issued and outstanding Class A ordinary share, par value $0.0001 per share, of RONI ("Class A Ordinary Share") automatically converted on a one-for-one basis into a share of Class A common stock, par value $0.0001 per share, of NET Power ("Class A Common Stock"), (b) each issued and outstanding Class B ordinary shares, par value $0.0001 per share, of RONI ("Class B Ordinary Share") automatically converted on a one-for-one basis into a share of Class B common stock, par value $0.0001 per share, of NET Power ("Class B Common Stock") and (c) each issued and outstanding Class A Unit and Class B Unit of RONI Opco automatically converted on a one-for-one basis into a Class A or Class B Unit of Opco, respectively.

SEC source: 0001213900-23-048017 · ownership.xml · nonDerivative · entry 1

Fox Carrie M · CIK 0001840838 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

F1 · price: Pursuant to that certain Business Combination Agreement, dated December 13, 2022, and subsequently amended on April 23, 2023, by and among Rice Acquisition Corp. II ("RONI"), Rice Acquisition Holdings II LLC ("RONI Opco"), NET Power, LLC and the other parties thereto, the parties effected a business combination transaction (the "Business Combination") on June 8, 2023. In connection with the Business Combination, on June 8, 2023, RONI domesticated as a Delaware corporation (the "RONI Domestication") and changed its name to "NET Power Inc." ("NET Power") and RONI Opco domesticated as a Delaware limited liability company (together with the RONI Domestication, the "Domestication") and changed its name to "NET Power Operations LLC" ("Opco").

F2 · price: As a result of the Domestication on June 8, 2023, (a) each issued and outstanding Class A ordinary share, par value $0.0001 per share, of RONI ("Class A Ordinary Share") automatically converted on a one-for-one basis into a share of Class A common stock, par value $0.0001 per share, of NET Power ("Class A Common Stock"), (b) each issued and outstanding Class B ordinary shares, par value $0.0001 per share, of RONI ("Class B Ordinary Share") automatically converted on a one-for-one basis into a share of Class B common stock, par value $0.0001 per share, of NET Power ("Class B Common Stock") and (c) each issued and outstanding Class A Unit and Class B Unit of RONI Opco automatically converted on a one-for-one basis into a Class A or Class B Unit of Opco, respectively.

SEC source: 0001213900-23-048266 · ownership.xml · derivative · entry 12

Rice Acquisition Sponsor II LLC · CIK 0001845421 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,900,000

Underlying: Class A Common Stock · 10,900,000 shares

Expires 2028-06-08

F1 · kind: Pursuant to that certain Business Combination Agreement, dated December 13, 2022, and subsequently amended on April 23, 2023, by and among Rice Acquisition Corp. II ("RONI"), Rice Acquisition Holdings II LLC ("RONI Opco"), NET Power, LLC and the other parties thereto, the parties effected a business combination transaction (the "Business Combination") on June 8, 2023. In connection with the Business Combination, on June 8, 2023, RONI domesticated as a Delaware corporation (the "RONI Domestication") and changed its name to "NET Power Inc." ("NET Power") and RONI Opco domesticated as a Delaware limited liability company (together with the RONI Domestication, the "Domestication") and changed its name to "NET Power Operations LLC" ("Opco").

F2 · kind: As a result of the Domestication on June 8, 2023, (a) each issued and outstanding Class A ordinary share, par value $0.0001 per share, of RONI ("Class A Ordinary Share") automatically converted on a one-for-one basis into a share of Class A common stock, par value $0.0001 per share, of NET Power ("Class A Common Stock"), (b) each issued and outstanding Class B ordinary shares, par value $0.0001 per share, of RONI ("Class B Ordinary Share") automatically converted on a one-for-one basis into a share of Class B common stock, par value $0.0001 per share, of NET Power ("Class B Common Stock"), (c) each issued and outstanding warrant of RONI (which were exercisable for a Class A Ordinary Share) automatically converted into a warrant to purchase one share of Class A Common Stock, and (d) each issued and outstanding Class A Unit and Class B Unit of RONI Opco automatically converted on a one-for-one basis into a Class A or Class B Unit of Opco, respectively.

F1 · price: Pursuant to that certain Business Combination Agreement, dated December 13, 2022, and subsequently amended on April 23, 2023, by and among Rice Acquisition Corp. II ("RONI"), Rice Acquisition Holdings II LLC ("RONI Opco"), NET Power, LLC and the other parties thereto, the parties effected a business combination transaction (the "Business Combination") on June 8, 2023. In connection with the Business Combination, on June 8, 2023, RONI domesticated as a Delaware corporation (the "RONI Domestication") and changed its name to "NET Power Inc." ("NET Power") and RONI Opco domesticated as a Delaware limited liability company (together with the RONI Domestication, the "Domestication") and changed its name to "NET Power Operations LLC" ("Opco").

F2 · price: As a result of the Domestication on June 8, 2023, (a) each issued and outstanding Class A ordinary share, par value $0.0001 per share, of RONI ("Class A Ordinary Share") automatically converted on a one-for-one basis into a share of Class A common stock, par value $0.0001 per share, of NET Power ("Class A Common Stock"), (b) each issued and outstanding Class B ordinary shares, par value $0.0001 per share, of RONI ("Class B Ordinary Share") automatically converted on a one-for-one basis into a share of Class B common stock, par value $0.0001 per share, of NET Power ("Class B Common Stock"), (c) each issued and outstanding warrant of RONI (which were exercisable for a Class A Ordinary Share) automatically converted into a warrant to purchase one share of Class A Common Stock, and (d) each issued and outstanding Class A Unit and Class B Unit of RONI Opco automatically converted on a one-for-one basis into a Class A or Class B Unit of Opco, respectively.

SEC source: 0001213900-23-048266 · ownership.xml · derivative · entry 11

Rice Acquisition Sponsor II LLC · CIK 0001845421 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Class A Ordinary Shares · 10,900,000 shares

Expires 2028-06-08

F1 · kind: Pursuant to that certain Business Combination Agreement, dated December 13, 2022, and subsequently amended on April 23, 2023, by and among Rice Acquisition Corp. II ("RONI"), Rice Acquisition Holdings II LLC ("RONI Opco"), NET Power, LLC and the other parties thereto, the parties effected a business combination transaction (the "Business Combination") on June 8, 2023. In connection with the Business Combination, on June 8, 2023, RONI domesticated as a Delaware corporation (the "RONI Domestication") and changed its name to "NET Power Inc." ("NET Power") and RONI Opco domesticated as a Delaware limited liability company (together with the RONI Domestication, the "Domestication") and changed its name to "NET Power Operations LLC" ("Opco").

F2 · kind: As a result of the Domestication on June 8, 2023, (a) each issued and outstanding Class A ordinary share, par value $0.0001 per share, of RONI ("Class A Ordinary Share") automatically converted on a one-for-one basis into a share of Class A common stock, par value $0.0001 per share, of NET Power ("Class A Common Stock"), (b) each issued and outstanding Class B ordinary shares, par value $0.0001 per share, of RONI ("Class B Ordinary Share") automatically converted on a one-for-one basis into a share of Class B common stock, par value $0.0001 per share, of NET Power ("Class B Common Stock"), (c) each issued and outstanding warrant of RONI (which were exercisable for a Class A Ordinary Share) automatically converted into a warrant to purchase one share of Class A Common Stock, and (d) each issued and outstanding Class A Unit and Class B Unit of RONI Opco automatically converted on a one-for-one basis into a Class A or Class B Unit of Opco, respectively.

F1 · price: Pursuant to that certain Business Combination Agreement, dated December 13, 2022, and subsequently amended on April 23, 2023, by and among Rice Acquisition Corp. II ("RONI"), Rice Acquisition Holdings II LLC ("RONI Opco"), NET Power, LLC and the other parties thereto, the parties effected a business combination transaction (the "Business Combination") on June 8, 2023. In connection with the Business Combination, on June 8, 2023, RONI domesticated as a Delaware corporation (the "RONI Domestication") and changed its name to "NET Power Inc." ("NET Power") and RONI Opco domesticated as a Delaware limited liability company (together with the RONI Domestication, the "Domestication") and changed its name to "NET Power Operations LLC" ("Opco").

F2 · price: As a result of the Domestication on June 8, 2023, (a) each issued and outstanding Class A ordinary share, par value $0.0001 per share, of RONI ("Class A Ordinary Share") automatically converted on a one-for-one basis into a share of Class A common stock, par value $0.0001 per share, of NET Power ("Class A Common Stock"), (b) each issued and outstanding Class B ordinary shares, par value $0.0001 per share, of RONI ("Class B Ordinary Share") automatically converted on a one-for-one basis into a share of Class B common stock, par value $0.0001 per share, of NET Power ("Class B Common Stock"), (c) each issued and outstanding warrant of RONI (which were exercisable for a Class A Ordinary Share) automatically converted into a warrant to purchase one share of Class A Common Stock, and (d) each issued and outstanding Class A Unit and Class B Unit of RONI Opco automatically converted on a one-for-one basis into a Class A or Class B Unit of Opco, respectively.

SEC source: 0001213900-23-048266 · ownership.xml · derivative · entry 10

Rice Acquisition Sponsor II LLC · CIK 0001845421 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,534,900

Underlying: Class A Common Stock · 1,000,000 shares

Expires not disclosed

F7 · derivative.exercise_price: For each Class B Unit of Opco, the reporting person owns a corresponding share of Class B Common Stock. The Class B Units of Opco are convertible into Class A Units of Opco pursuant to the terms of the limited liability agreement of Opco. The Class A Units of Opco (together with the corresponding shares of Class B Common Stock) are exchangeable into shares of Class A Common Stock or cash, at NET Power's election, on a one-for-one basis and have no expiration date.

F3 · kind: Immediately upon the consummation of the Business Combination, pursuant to the Sponsor Letter Agreement, dated as of December 13, 2022, by and among RONI, the reporting person, RONI Opco, NET Power, LLC and the other parties thereto, 1,000,000 shares of Class B Common Stock and 1,000,000 Class B Units of Opco held by the reporting person were forfeited to NET Power and Opco, respectively, for no consideration and automatically canceled.

F3 · price: Immediately upon the consummation of the Business Combination, pursuant to the Sponsor Letter Agreement, dated as of December 13, 2022, by and among RONI, the reporting person, RONI Opco, NET Power, LLC and the other parties thereto, 1,000,000 shares of Class B Common Stock and 1,000,000 Class B Units of Opco held by the reporting person were forfeited to NET Power and Opco, respectively, for no consideration and automatically canceled.

F7 · derivative.exercise_date: For each Class B Unit of Opco, the reporting person owns a corresponding share of Class B Common Stock. The Class B Units of Opco are convertible into Class A Units of Opco pursuant to the terms of the limited liability agreement of Opco. The Class A Units of Opco (together with the corresponding shares of Class B Common Stock) are exchangeable into shares of Class A Common Stock or cash, at NET Power's election, on a one-for-one basis and have no expiration date.

F7 · derivative.expiration_date: For each Class B Unit of Opco, the reporting person owns a corresponding share of Class B Common Stock. The Class B Units of Opco are convertible into Class A Units of Opco pursuant to the terms of the limited liability agreement of Opco. The Class A Units of Opco (together with the corresponding shares of Class B Common Stock) are exchangeable into shares of Class A Common Stock or cash, at NET Power's election, on a one-for-one basis and have no expiration date.

SEC source: 0001213900-23-048266 · ownership.xml · derivative · entry 9

Rice Acquisition Sponsor II LLC · CIK 0001845421 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,534,900

Underlying: Class A Common Stock · 8,534,900 shares

Expires not disclosed

F7 · derivative.exercise_price: For each Class B Unit of Opco, the reporting person owns a corresponding share of Class B Common Stock. The Class B Units of Opco are convertible into Class A Units of Opco pursuant to the terms of the limited liability agreement of Opco. The Class A Units of Opco (together with the corresponding shares of Class B Common Stock) are exchangeable into shares of Class A Common Stock or cash, at NET Power's election, on a one-for-one basis and have no expiration date.

F1 · kind: Pursuant to that certain Business Combination Agreement, dated December 13, 2022, and subsequently amended on April 23, 2023, by and among Rice Acquisition Corp. II ("RONI"), Rice Acquisition Holdings II LLC ("RONI Opco"), NET Power, LLC and the other parties thereto, the parties effected a business combination transaction (the "Business Combination") on June 8, 2023. In connection with the Business Combination, on June 8, 2023, RONI domesticated as a Delaware corporation (the "RONI Domestication") and changed its name to "NET Power Inc." ("NET Power") and RONI Opco domesticated as a Delaware limited liability company (together with the RONI Domestication, the "Domestication") and changed its name to "NET Power Operations LLC" ("Opco").

F2 · kind: As a result of the Domestication on June 8, 2023, (a) each issued and outstanding Class A ordinary share, par value $0.0001 per share, of RONI ("Class A Ordinary Share") automatically converted on a one-for-one basis into a share of Class A common stock, par value $0.0001 per share, of NET Power ("Class A Common Stock"), (b) each issued and outstanding Class B ordinary shares, par value $0.0001 per share, of RONI ("Class B Ordinary Share") automatically converted on a one-for-one basis into a share of Class B common stock, par value $0.0001 per share, of NET Power ("Class B Common Stock"), (c) each issued and outstanding warrant of RONI (which were exercisable for a Class A Ordinary Share) automatically converted into a warrant to purchase one share of Class A Common Stock, and (d) each issued and outstanding Class A Unit and Class B Unit of RONI Opco automatically converted on a one-for-one basis into a Class A or Class B Unit of Opco, respectively.

F1 · price: Pursuant to that certain Business Combination Agreement, dated December 13, 2022, and subsequently amended on April 23, 2023, by and among Rice Acquisition Corp. II ("RONI"), Rice Acquisition Holdings II LLC ("RONI Opco"), NET Power, LLC and the other parties thereto, the parties effected a business combination transaction (the "Business Combination") on June 8, 2023. In connection with the Business Combination, on June 8, 2023, RONI domesticated as a Delaware corporation (the "RONI Domestication") and changed its name to "NET Power Inc." ("NET Power") and RONI Opco domesticated as a Delaware limited liability company (together with the RONI Domestication, the "Domestication") and changed its name to "NET Power Operations LLC" ("Opco").

F2 · price: As a result of the Domestication on June 8, 2023, (a) each issued and outstanding Class A ordinary share, par value $0.0001 per share, of RONI ("Class A Ordinary Share") automatically converted on a one-for-one basis into a share of Class A common stock, par value $0.0001 per share, of NET Power ("Class A Common Stock"), (b) each issued and outstanding Class B ordinary shares, par value $0.0001 per share, of RONI ("Class B Ordinary Share") automatically converted on a one-for-one basis into a share of Class B common stock, par value $0.0001 per share, of NET Power ("Class B Common Stock"), (c) each issued and outstanding warrant of RONI (which were exercisable for a Class A Ordinary Share) automatically converted into a warrant to purchase one share of Class A Common Stock, and (d) each issued and outstanding Class A Unit and Class B Unit of RONI Opco automatically converted on a one-for-one basis into a Class A or Class B Unit of Opco, respectively.

F7 · derivative.exercise_date: For each Class B Unit of Opco, the reporting person owns a corresponding share of Class B Common Stock. The Class B Units of Opco are convertible into Class A Units of Opco pursuant to the terms of the limited liability agreement of Opco. The Class A Units of Opco (together with the corresponding shares of Class B Common Stock) are exchangeable into shares of Class A Common Stock or cash, at NET Power's election, on a one-for-one basis and have no expiration date.

F7 · derivative.expiration_date: For each Class B Unit of Opco, the reporting person owns a corresponding share of Class B Common Stock. The Class B Units of Opco are convertible into Class A Units of Opco pursuant to the terms of the limited liability agreement of Opco. The Class A Units of Opco (together with the corresponding shares of Class B Common Stock) are exchangeable into shares of Class A Common Stock or cash, at NET Power's election, on a one-for-one basis and have no expiration date.

SEC source: 0001213900-23-048266 · ownership.xml · derivative · entry 8

Rice Acquisition Sponsor II LLC · CIK 0001845421 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Class A Ordinary Shares · 8,534,900 shares

Expires not disclosed

F6 · derivative.exercise_price: For each Class B Unit of RONI Opco, the reporting person owned a corresponding Class B Ordinary Share. The Class B Units of RONI Opco were convertible into Class A Units of RONI Opco pursuant to the terms of the limited liability agreement of RONI Opco. The Class A Units of RONI Opco (together with the corresponding Class B Ordinary Shares) were exchangeable into Class A Ordinary Shares or cash, at RONI's election, after the time of RONI's initial business combination on a one-for-one basis and had no expiration date.

F1 · kind: Pursuant to that certain Business Combination Agreement, dated December 13, 2022, and subsequently amended on April 23, 2023, by and among Rice Acquisition Corp. II ("RONI"), Rice Acquisition Holdings II LLC ("RONI Opco"), NET Power, LLC and the other parties thereto, the parties effected a business combination transaction (the "Business Combination") on June 8, 2023. In connection with the Business Combination, on June 8, 2023, RONI domesticated as a Delaware corporation (the "RONI Domestication") and changed its name to "NET Power Inc." ("NET Power") and RONI Opco domesticated as a Delaware limited liability company (together with the RONI Domestication, the "Domestication") and changed its name to "NET Power Operations LLC" ("Opco").

F2 · kind: As a result of the Domestication on June 8, 2023, (a) each issued and outstanding Class A ordinary share, par value $0.0001 per share, of RONI ("Class A Ordinary Share") automatically converted on a one-for-one basis into a share of Class A common stock, par value $0.0001 per share, of NET Power ("Class A Common Stock"), (b) each issued and outstanding Class B ordinary shares, par value $0.0001 per share, of RONI ("Class B Ordinary Share") automatically converted on a one-for-one basis into a share of Class B common stock, par value $0.0001 per share, of NET Power ("Class B Common Stock"), (c) each issued and outstanding warrant of RONI (which were exercisable for a Class A Ordinary Share) automatically converted into a warrant to purchase one share of Class A Common Stock, and (d) each issued and outstanding Class A Unit and Class B Unit of RONI Opco automatically converted on a one-for-one basis into a Class A or Class B Unit of Opco, respectively.

F1 · price: Pursuant to that certain Business Combination Agreement, dated December 13, 2022, and subsequently amended on April 23, 2023, by and among Rice Acquisition Corp. II ("RONI"), Rice Acquisition Holdings II LLC ("RONI Opco"), NET Power, LLC and the other parties thereto, the parties effected a business combination transaction (the "Business Combination") on June 8, 2023. In connection with the Business Combination, on June 8, 2023, RONI domesticated as a Delaware corporation (the "RONI Domestication") and changed its name to "NET Power Inc." ("NET Power") and RONI Opco domesticated as a Delaware limited liability company (together with the RONI Domestication, the "Domestication") and changed its name to "NET Power Operations LLC" ("Opco").

F2 · price: As a result of the Domestication on June 8, 2023, (a) each issued and outstanding Class A ordinary share, par value $0.0001 per share, of RONI ("Class A Ordinary Share") automatically converted on a one-for-one basis into a share of Class A common stock, par value $0.0001 per share, of NET Power ("Class A Common Stock"), (b) each issued and outstanding Class B ordinary shares, par value $0.0001 per share, of RONI ("Class B Ordinary Share") automatically converted on a one-for-one basis into a share of Class B common stock, par value $0.0001 per share, of NET Power ("Class B Common Stock"), (c) each issued and outstanding warrant of RONI (which were exercisable for a Class A Ordinary Share) automatically converted into a warrant to purchase one share of Class A Common Stock, and (d) each issued and outstanding Class A Unit and Class B Unit of RONI Opco automatically converted on a one-for-one basis into a Class A or Class B Unit of Opco, respectively.

F6 · derivative.exercise_date: For each Class B Unit of RONI Opco, the reporting person owned a corresponding Class B Ordinary Share. The Class B Units of RONI Opco were convertible into Class A Units of RONI Opco pursuant to the terms of the limited liability agreement of RONI Opco. The Class A Units of RONI Opco (together with the corresponding Class B Ordinary Shares) were exchangeable into Class A Ordinary Shares or cash, at RONI's election, after the time of RONI's initial business combination on a one-for-one basis and had no expiration date.

F6 · derivative.expiration_date: For each Class B Unit of RONI Opco, the reporting person owned a corresponding Class B Ordinary Share. The Class B Units of RONI Opco were convertible into Class A Units of RONI Opco pursuant to the terms of the limited liability agreement of RONI Opco. The Class A Units of RONI Opco (together with the corresponding Class B Ordinary Shares) were exchangeable into Class A Ordinary Shares or cash, at RONI's election, after the time of RONI's initial business combination on a one-for-one basis and had no expiration date.

SEC source: 0001213900-23-048266 · ownership.xml · derivative · entry 7

Rice Acquisition Sponsor II LLC · CIK 0001845421 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 100

Underlying: Class A Common Stock · 100 shares

Expires not disclosed

F5 · derivative.exercise_price: For each Class A Unit of Opco, the reporting person owns a corresponding share of Class B Common Stock. The Class A Units of Opco (together with the corresponding share of Class B Common Stock) are exchangeable into shares of Class A Common Stock or cash, at NET Power's election, on a one-for-one basis and have no expiration date.

F1 · kind: Pursuant to that certain Business Combination Agreement, dated December 13, 2022, and subsequently amended on April 23, 2023, by and among Rice Acquisition Corp. II ("RONI"), Rice Acquisition Holdings II LLC ("RONI Opco"), NET Power, LLC and the other parties thereto, the parties effected a business combination transaction (the "Business Combination") on June 8, 2023. In connection with the Business Combination, on June 8, 2023, RONI domesticated as a Delaware corporation (the "RONI Domestication") and changed its name to "NET Power Inc." ("NET Power") and RONI Opco domesticated as a Delaware limited liability company (together with the RONI Domestication, the "Domestication") and changed its name to "NET Power Operations LLC" ("Opco").

F2 · kind: As a result of the Domestication on June 8, 2023, (a) each issued and outstanding Class A ordinary share, par value $0.0001 per share, of RONI ("Class A Ordinary Share") automatically converted on a one-for-one basis into a share of Class A common stock, par value $0.0001 per share, of NET Power ("Class A Common Stock"), (b) each issued and outstanding Class B ordinary shares, par value $0.0001 per share, of RONI ("Class B Ordinary Share") automatically converted on a one-for-one basis into a share of Class B common stock, par value $0.0001 per share, of NET Power ("Class B Common Stock"), (c) each issued and outstanding warrant of RONI (which were exercisable for a Class A Ordinary Share) automatically converted into a warrant to purchase one share of Class A Common Stock, and (d) each issued and outstanding Class A Unit and Class B Unit of RONI Opco automatically converted on a one-for-one basis into a Class A or Class B Unit of Opco, respectively.

F1 · price: Pursuant to that certain Business Combination Agreement, dated December 13, 2022, and subsequently amended on April 23, 2023, by and among Rice Acquisition Corp. II ("RONI"), Rice Acquisition Holdings II LLC ("RONI Opco"), NET Power, LLC and the other parties thereto, the parties effected a business combination transaction (the "Business Combination") on June 8, 2023. In connection with the Business Combination, on June 8, 2023, RONI domesticated as a Delaware corporation (the "RONI Domestication") and changed its name to "NET Power Inc." ("NET Power") and RONI Opco domesticated as a Delaware limited liability company (together with the RONI Domestication, the "Domestication") and changed its name to "NET Power Operations LLC" ("Opco").

F2 · price: As a result of the Domestication on June 8, 2023, (a) each issued and outstanding Class A ordinary share, par value $0.0001 per share, of RONI ("Class A Ordinary Share") automatically converted on a one-for-one basis into a share of Class A common stock, par value $0.0001 per share, of NET Power ("Class A Common Stock"), (b) each issued and outstanding Class B ordinary shares, par value $0.0001 per share, of RONI ("Class B Ordinary Share") automatically converted on a one-for-one basis into a share of Class B common stock, par value $0.0001 per share, of NET Power ("Class B Common Stock"), (c) each issued and outstanding warrant of RONI (which were exercisable for a Class A Ordinary Share) automatically converted into a warrant to purchase one share of Class A Common Stock, and (d) each issued and outstanding Class A Unit and Class B Unit of RONI Opco automatically converted on a one-for-one basis into a Class A or Class B Unit of Opco, respectively.

F5 · derivative.exercise_date: For each Class A Unit of Opco, the reporting person owns a corresponding share of Class B Common Stock. The Class A Units of Opco (together with the corresponding share of Class B Common Stock) are exchangeable into shares of Class A Common Stock or cash, at NET Power's election, on a one-for-one basis and have no expiration date.

F5 · derivative.expiration_date: For each Class A Unit of Opco, the reporting person owns a corresponding share of Class B Common Stock. The Class A Units of Opco (together with the corresponding share of Class B Common Stock) are exchangeable into shares of Class A Common Stock or cash, at NET Power's election, on a one-for-one basis and have no expiration date.

SEC source: 0001213900-23-048266 · ownership.xml · derivative · entry 6

Rice Acquisition Sponsor II LLC · CIK 0001845421 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Class A Ordinary Shares · 100 shares

Expires not disclosed

F4 · derivative.exercise_price: For each Class A Unit of RONI Opco, the reporting person owned a corresponding Class B Ordinary Share. The Class A Units of RONI Opco (together with the corresponding Class B Ordinary Shares) were exchangeable into Class A Ordinary Shares or cash, at RONI's election, after the time of RONI's initial business combination on a one-for-one basis and had no expiration date.

F1 · kind: Pursuant to that certain Business Combination Agreement, dated December 13, 2022, and subsequently amended on April 23, 2023, by and among Rice Acquisition Corp. II ("RONI"), Rice Acquisition Holdings II LLC ("RONI Opco"), NET Power, LLC and the other parties thereto, the parties effected a business combination transaction (the "Business Combination") on June 8, 2023. In connection with the Business Combination, on June 8, 2023, RONI domesticated as a Delaware corporation (the "RONI Domestication") and changed its name to "NET Power Inc." ("NET Power") and RONI Opco domesticated as a Delaware limited liability company (together with the RONI Domestication, the "Domestication") and changed its name to "NET Power Operations LLC" ("Opco").

F2 · kind: As a result of the Domestication on June 8, 2023, (a) each issued and outstanding Class A ordinary share, par value $0.0001 per share, of RONI ("Class A Ordinary Share") automatically converted on a one-for-one basis into a share of Class A common stock, par value $0.0001 per share, of NET Power ("Class A Common Stock"), (b) each issued and outstanding Class B ordinary shares, par value $0.0001 per share, of RONI ("Class B Ordinary Share") automatically converted on a one-for-one basis into a share of Class B common stock, par value $0.0001 per share, of NET Power ("Class B Common Stock"), (c) each issued and outstanding warrant of RONI (which were exercisable for a Class A Ordinary Share) automatically converted into a warrant to purchase one share of Class A Common Stock, and (d) each issued and outstanding Class A Unit and Class B Unit of RONI Opco automatically converted on a one-for-one basis into a Class A or Class B Unit of Opco, respectively.

F1 · price: Pursuant to that certain Business Combination Agreement, dated December 13, 2022, and subsequently amended on April 23, 2023, by and among Rice Acquisition Corp. II ("RONI"), Rice Acquisition Holdings II LLC ("RONI Opco"), NET Power, LLC and the other parties thereto, the parties effected a business combination transaction (the "Business Combination") on June 8, 2023. In connection with the Business Combination, on June 8, 2023, RONI domesticated as a Delaware corporation (the "RONI Domestication") and changed its name to "NET Power Inc." ("NET Power") and RONI Opco domesticated as a Delaware limited liability company (together with the RONI Domestication, the "Domestication") and changed its name to "NET Power Operations LLC" ("Opco").

F2 · price: As a result of the Domestication on June 8, 2023, (a) each issued and outstanding Class A ordinary share, par value $0.0001 per share, of RONI ("Class A Ordinary Share") automatically converted on a one-for-one basis into a share of Class A common stock, par value $0.0001 per share, of NET Power ("Class A Common Stock"), (b) each issued and outstanding Class B ordinary shares, par value $0.0001 per share, of RONI ("Class B Ordinary Share") automatically converted on a one-for-one basis into a share of Class B common stock, par value $0.0001 per share, of NET Power ("Class B Common Stock"), (c) each issued and outstanding warrant of RONI (which were exercisable for a Class A Ordinary Share) automatically converted into a warrant to purchase one share of Class A Common Stock, and (d) each issued and outstanding Class A Unit and Class B Unit of RONI Opco automatically converted on a one-for-one basis into a Class A or Class B Unit of Opco, respectively.

F4 · derivative.exercise_date: For each Class A Unit of RONI Opco, the reporting person owned a corresponding Class B Ordinary Share. The Class A Units of RONI Opco (together with the corresponding Class B Ordinary Shares) were exchangeable into Class A Ordinary Shares or cash, at RONI's election, after the time of RONI's initial business combination on a one-for-one basis and had no expiration date.

F4 · derivative.expiration_date: For each Class A Unit of RONI Opco, the reporting person owned a corresponding Class B Ordinary Share. The Class A Units of RONI Opco (together with the corresponding Class B Ordinary Shares) were exchangeable into Class A Ordinary Shares or cash, at RONI's election, after the time of RONI's initial business combination on a one-for-one basis and had no expiration date.

SEC source: 0001213900-23-048266 · ownership.xml · nonDerivative · entry 5

Rice Acquisition Sponsor II LLC · CIK 0001845421 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,535,000

F3 · price: Immediately upon the consummation of the Business Combination, pursuant to the Sponsor Letter Agreement, dated as of December 13, 2022, by and among RONI, the reporting person, RONI Opco, NET Power, LLC and the other parties thereto, 1,000,000 shares of Class B Common Stock and 1,000,000 Class B Units of Opco held by the reporting person were forfeited to NET Power and Opco, respectively, for no consideration and automatically canceled.

SEC source: 0001213900-23-048266 · ownership.xml · nonDerivative · entry 4

Rice Acquisition Sponsor II LLC · CIK 0001845421 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,535,000

F1 · price: Pursuant to that certain Business Combination Agreement, dated December 13, 2022, and subsequently amended on April 23, 2023, by and among Rice Acquisition Corp. II ("RONI"), Rice Acquisition Holdings II LLC ("RONI Opco"), NET Power, LLC and the other parties thereto, the parties effected a business combination transaction (the "Business Combination") on June 8, 2023. In connection with the Business Combination, on June 8, 2023, RONI domesticated as a Delaware corporation (the "RONI Domestication") and changed its name to "NET Power Inc." ("NET Power") and RONI Opco domesticated as a Delaware limited liability company (together with the RONI Domestication, the "Domestication") and changed its name to "NET Power Operations LLC" ("Opco").

F2 · price: As a result of the Domestication on June 8, 2023, (a) each issued and outstanding Class A ordinary share, par value $0.0001 per share, of RONI ("Class A Ordinary Share") automatically converted on a one-for-one basis into a share of Class A common stock, par value $0.0001 per share, of NET Power ("Class A Common Stock"), (b) each issued and outstanding Class B ordinary shares, par value $0.0001 per share, of RONI ("Class B Ordinary Share") automatically converted on a one-for-one basis into a share of Class B common stock, par value $0.0001 per share, of NET Power ("Class B Common Stock"), (c) each issued and outstanding warrant of RONI (which were exercisable for a Class A Ordinary Share) automatically converted into a warrant to purchase one share of Class A Common Stock, and (d) each issued and outstanding Class A Unit and Class B Unit of RONI Opco automatically converted on a one-for-one basis into a Class A or Class B Unit of Opco, respectively.

SEC source: 0001213900-23-048266 · ownership.xml · nonDerivative · entry 3

Rice Acquisition Sponsor II LLC · CIK 0001845421 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

F1 · price: Pursuant to that certain Business Combination Agreement, dated December 13, 2022, and subsequently amended on April 23, 2023, by and among Rice Acquisition Corp. II ("RONI"), Rice Acquisition Holdings II LLC ("RONI Opco"), NET Power, LLC and the other parties thereto, the parties effected a business combination transaction (the "Business Combination") on June 8, 2023. In connection with the Business Combination, on June 8, 2023, RONI domesticated as a Delaware corporation (the "RONI Domestication") and changed its name to "NET Power Inc." ("NET Power") and RONI Opco domesticated as a Delaware limited liability company (together with the RONI Domestication, the "Domestication") and changed its name to "NET Power Operations LLC" ("Opco").

F2 · price: As a result of the Domestication on June 8, 2023, (a) each issued and outstanding Class A ordinary share, par value $0.0001 per share, of RONI ("Class A Ordinary Share") automatically converted on a one-for-one basis into a share of Class A common stock, par value $0.0001 per share, of NET Power ("Class A Common Stock"), (b) each issued and outstanding Class B ordinary shares, par value $0.0001 per share, of RONI ("Class B Ordinary Share") automatically converted on a one-for-one basis into a share of Class B common stock, par value $0.0001 per share, of NET Power ("Class B Common Stock"), (c) each issued and outstanding warrant of RONI (which were exercisable for a Class A Ordinary Share) automatically converted into a warrant to purchase one share of Class A Common Stock, and (d) each issued and outstanding Class A Unit and Class B Unit of RONI Opco automatically converted on a one-for-one basis into a Class A or Class B Unit of Opco, respectively.

SEC source: 0001213900-23-048266 · ownership.xml · nonDerivative · entry 2

Rice Acquisition Sponsor II LLC · CIK 0001845421 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,500

F1 · price: Pursuant to that certain Business Combination Agreement, dated December 13, 2022, and subsequently amended on April 23, 2023, by and among Rice Acquisition Corp. II ("RONI"), Rice Acquisition Holdings II LLC ("RONI Opco"), NET Power, LLC and the other parties thereto, the parties effected a business combination transaction (the "Business Combination") on June 8, 2023. In connection with the Business Combination, on June 8, 2023, RONI domesticated as a Delaware corporation (the "RONI Domestication") and changed its name to "NET Power Inc." ("NET Power") and RONI Opco domesticated as a Delaware limited liability company (together with the RONI Domestication, the "Domestication") and changed its name to "NET Power Operations LLC" ("Opco").

F2 · price: As a result of the Domestication on June 8, 2023, (a) each issued and outstanding Class A ordinary share, par value $0.0001 per share, of RONI ("Class A Ordinary Share") automatically converted on a one-for-one basis into a share of Class A common stock, par value $0.0001 per share, of NET Power ("Class A Common Stock"), (b) each issued and outstanding Class B ordinary shares, par value $0.0001 per share, of RONI ("Class B Ordinary Share") automatically converted on a one-for-one basis into a share of Class B common stock, par value $0.0001 per share, of NET Power ("Class B Common Stock"), (c) each issued and outstanding warrant of RONI (which were exercisable for a Class A Ordinary Share) automatically converted into a warrant to purchase one share of Class A Common Stock, and (d) each issued and outstanding Class A Unit and Class B Unit of RONI Opco automatically converted on a one-for-one basis into a Class A or Class B Unit of Opco, respectively.

SEC source: 0001213900-23-048266 · ownership.xml · nonDerivative · entry 1

Rice Acquisition Sponsor II LLC · CIK 0001845421 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

F1 · price: Pursuant to that certain Business Combination Agreement, dated December 13, 2022, and subsequently amended on April 23, 2023, by and among Rice Acquisition Corp. II ("RONI"), Rice Acquisition Holdings II LLC ("RONI Opco"), NET Power, LLC and the other parties thereto, the parties effected a business combination transaction (the "Business Combination") on June 8, 2023. In connection with the Business Combination, on June 8, 2023, RONI domesticated as a Delaware corporation (the "RONI Domestication") and changed its name to "NET Power Inc." ("NET Power") and RONI Opco domesticated as a Delaware limited liability company (together with the RONI Domestication, the "Domestication") and changed its name to "NET Power Operations LLC" ("Opco").

F2 · price: As a result of the Domestication on June 8, 2023, (a) each issued and outstanding Class A ordinary share, par value $0.0001 per share, of RONI ("Class A Ordinary Share") automatically converted on a one-for-one basis into a share of Class A common stock, par value $0.0001 per share, of NET Power ("Class A Common Stock"), (b) each issued and outstanding Class B ordinary shares, par value $0.0001 per share, of RONI ("Class B Ordinary Share") automatically converted on a one-for-one basis into a share of Class B common stock, par value $0.0001 per share, of NET Power ("Class B Common Stock"), (c) each issued and outstanding warrant of RONI (which were exercisable for a Class A Ordinary Share) automatically converted into a warrant to purchase one share of Class A Common Stock, and (d) each issued and outstanding Class A Unit and Class B Unit of RONI Opco automatically converted on a one-for-one basis into a Class A or Class B Unit of Opco, respectively.

SEC source: 0001213900-23-048298 · ownership.xml · derivative · entry 2

MAHON JAMES · CIK 0001975868 · General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 693,028

Underlying: Class A common stock · 693,028 shares

Expires not disclosed

F2 · derivative.exercise_price: The Opco Units (together with the corresponding shares of the issuer's Class B common stock) are exchangeable into cash or shares of the issuer's Class A common stock, at the issuer's election, on a one-for-one basis and have no expiration date.

F1 · kind: On June 8, 2023, as a result of the consummation of the transactions (the "Business Combination") contemplated by that certain Business Combination Agreement, dated December 13, 2022 and subsequently amended on April 23, 2023, by and among the issuer, NET Power Operations LLC (f/k/a Rice Acquisition Holdings II LLC) ("Opco"), Topo Buyer Co, LLC, Topo Merger Sub, LLC and NET Power, LLC ("Old NET Power"), in exchange for the equity interests of Old NET Power, which were cancelled, Mr. Mahon received Class A units of Opco (the "Opco Units") and a corresponding number of shares of the issuer's Class B common stock (which together are exchangeable into shares of the issuer's Class A Common Stock on a one-for-one basis).

F1 · price: On June 8, 2023, as a result of the consummation of the transactions (the "Business Combination") contemplated by that certain Business Combination Agreement, dated December 13, 2022 and subsequently amended on April 23, 2023, by and among the issuer, NET Power Operations LLC (f/k/a Rice Acquisition Holdings II LLC) ("Opco"), Topo Buyer Co, LLC, Topo Merger Sub, LLC and NET Power, LLC ("Old NET Power"), in exchange for the equity interests of Old NET Power, which were cancelled, Mr. Mahon received Class A units of Opco (the "Opco Units") and a corresponding number of shares of the issuer's Class B common stock (which together are exchangeable into shares of the issuer's Class A Common Stock on a one-for-one basis).

F2 · derivative.exercise_date: The Opco Units (together with the corresponding shares of the issuer's Class B common stock) are exchangeable into cash or shares of the issuer's Class A common stock, at the issuer's election, on a one-for-one basis and have no expiration date.

F2 · derivative.expiration_date: The Opco Units (together with the corresponding shares of the issuer's Class B common stock) are exchangeable into cash or shares of the issuer's Class A common stock, at the issuer's election, on a one-for-one basis and have no expiration date.

SEC source: 0001213900-23-048298 · ownership.xml · nonDerivative · entry 1

MAHON JAMES · CIK 0001975868 · General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 693,028

F1 · kind: On June 8, 2023, as a result of the consummation of the transactions (the "Business Combination") contemplated by that certain Business Combination Agreement, dated December 13, 2022 and subsequently amended on April 23, 2023, by and among the issuer, NET Power Operations LLC (f/k/a Rice Acquisition Holdings II LLC) ("Opco"), Topo Buyer Co, LLC, Topo Merger Sub, LLC and NET Power, LLC ("Old NET Power"), in exchange for the equity interests of Old NET Power, which were cancelled, Mr. Mahon received Class A units of Opco (the "Opco Units") and a corresponding number of shares of the issuer's Class B common stock (which together are exchangeable into shares of the issuer's Class A Common Stock on a one-for-one basis).

F1 · price: On June 8, 2023, as a result of the consummation of the transactions (the "Business Combination") contemplated by that certain Business Combination Agreement, dated December 13, 2022 and subsequently amended on April 23, 2023, by and among the issuer, NET Power Operations LLC (f/k/a Rice Acquisition Holdings II LLC) ("Opco"), Topo Buyer Co, LLC, Topo Merger Sub, LLC and NET Power, LLC ("Old NET Power"), in exchange for the equity interests of Old NET Power, which were cancelled, Mr. Mahon received Class A units of Opco (the "Opco Units") and a corresponding number of shares of the issuer's Class B common stock (which together are exchangeable into shares of the issuer's Class A Common Stock on a one-for-one basis).

SEC source: 0001213900-23-048297 · ownership.xml · derivative · entry 2

HEFFINGER BRANDON · CIK 0001975934 · Chief Commercial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 514,559

Underlying: Class A common stock · 514,559 shares

Expires not disclosed

F2 · derivative.exercise_price: The Opco Units (together with the corresponding shares of the issuer's Class B common stock) are exchangeable into cash or shares of the issuer's Class A common stock, at the issuer's election, on a one-for-one basis and have no expiration date.

F1 · kind: On June 8, 2023, as a result of the consummation of the transactions (the "Business Combination") contemplated by that certain Business Combination Agreement, dated December 13, 2022 and subsequently amended on April 23, 2023, by and among the issuer, NET Power Operations LLC (f/k/a Rice Acquisition Holdings II LLC) ("Opco"), Topo Buyer Co, LLC, Topo Merger Sub, LLC and NET Power, LLC ("Old NET Power"), in exchange for the equity interests of Old NET Power, which were cancelled, Mr. Heffinger received Class A units of Opco (the "Opco Units") and a corresponding number of shares of the issuer's Class B common stock (which together are exchangeable into shares of the issuer's Class A Common Stock on a one-for-one basis).

F1 · price: On June 8, 2023, as a result of the consummation of the transactions (the "Business Combination") contemplated by that certain Business Combination Agreement, dated December 13, 2022 and subsequently amended on April 23, 2023, by and among the issuer, NET Power Operations LLC (f/k/a Rice Acquisition Holdings II LLC) ("Opco"), Topo Buyer Co, LLC, Topo Merger Sub, LLC and NET Power, LLC ("Old NET Power"), in exchange for the equity interests of Old NET Power, which were cancelled, Mr. Heffinger received Class A units of Opco (the "Opco Units") and a corresponding number of shares of the issuer's Class B common stock (which together are exchangeable into shares of the issuer's Class A Common Stock on a one-for-one basis).

F2 · derivative.exercise_date: The Opco Units (together with the corresponding shares of the issuer's Class B common stock) are exchangeable into cash or shares of the issuer's Class A common stock, at the issuer's election, on a one-for-one basis and have no expiration date.

F2 · derivative.expiration_date: The Opco Units (together with the corresponding shares of the issuer's Class B common stock) are exchangeable into cash or shares of the issuer's Class A common stock, at the issuer's election, on a one-for-one basis and have no expiration date.

SEC source: 0001213900-23-048297 · ownership.xml · nonDerivative · entry 1

HEFFINGER BRANDON · CIK 0001975934 · Chief Commercial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 514,559

F1 · kind: On June 8, 2023, as a result of the consummation of the transactions (the "Business Combination") contemplated by that certain Business Combination Agreement, dated December 13, 2022 and subsequently amended on April 23, 2023, by and among the issuer, NET Power Operations LLC (f/k/a Rice Acquisition Holdings II LLC) ("Opco"), Topo Buyer Co, LLC, Topo Merger Sub, LLC and NET Power, LLC ("Old NET Power"), in exchange for the equity interests of Old NET Power, which were cancelled, Mr. Heffinger received Class A units of Opco (the "Opco Units") and a corresponding number of shares of the issuer's Class B common stock (which together are exchangeable into shares of the issuer's Class A Common Stock on a one-for-one basis).

F1 · price: On June 8, 2023, as a result of the consummation of the transactions (the "Business Combination") contemplated by that certain Business Combination Agreement, dated December 13, 2022 and subsequently amended on April 23, 2023, by and among the issuer, NET Power Operations LLC (f/k/a Rice Acquisition Holdings II LLC) ("Opco"), Topo Buyer Co, LLC, Topo Merger Sub, LLC and NET Power, LLC ("Old NET Power"), in exchange for the equity interests of Old NET Power, which were cancelled, Mr. Heffinger received Class A units of Opco (the "Opco Units") and a corresponding number of shares of the issuer's Class B common stock (which together are exchangeable into shares of the issuer's Class A Common Stock on a one-for-one basis).

SEC source: 0001213900-23-048296 · ownership.xml · derivative · entry 2

ALLEN BRIAN F. · CIK 0001975816 · President and COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 568,090

Underlying: Class A common stock · 568,090 shares

Expires not disclosed

F2 · derivative.exercise_price: The Opco Units (together with the corresponding shares of the issuer's Class B common stock) are exchangeable into cash or shares of the issuer's Class A common stock, at the issuer's election, on a one-for-one basis and have no expiration date.

F1 · kind: On June 8, 2023, as a result of the consummation of the transactions (the "Business Combination") contemplated by that certain Business Combination Agreement, dated December 13, 2022 and subsequently amended on April 23, 2023, by and among the issuer, NET Power Operations LLC (f/k/a Rice Acquisition Holdings II LLC) ("Opco"), Topo Buyer Co, LLC, Topo Merger Sub, LLC and NET Power, LLC ("Old NET Power"), in exchange for the equity interests of Old NET Power, which were cancelled, Mr. Allen received Class A units of Opco (the "Opco Units") and a corresponding number of shares of the issuer's Class B common stock (which together are exchangeable into shares of the issuer's Class A Common Stock on a one-for-one basis).

F1 · price: On June 8, 2023, as a result of the consummation of the transactions (the "Business Combination") contemplated by that certain Business Combination Agreement, dated December 13, 2022 and subsequently amended on April 23, 2023, by and among the issuer, NET Power Operations LLC (f/k/a Rice Acquisition Holdings II LLC) ("Opco"), Topo Buyer Co, LLC, Topo Merger Sub, LLC and NET Power, LLC ("Old NET Power"), in exchange for the equity interests of Old NET Power, which were cancelled, Mr. Allen received Class A units of Opco (the "Opco Units") and a corresponding number of shares of the issuer's Class B common stock (which together are exchangeable into shares of the issuer's Class A Common Stock on a one-for-one basis).

F2 · derivative.exercise_date: The Opco Units (together with the corresponding shares of the issuer's Class B common stock) are exchangeable into cash or shares of the issuer's Class A common stock, at the issuer's election, on a one-for-one basis and have no expiration date.

F2 · derivative.expiration_date: The Opco Units (together with the corresponding shares of the issuer's Class B common stock) are exchangeable into cash or shares of the issuer's Class A common stock, at the issuer's election, on a one-for-one basis and have no expiration date.

SEC source: 0001213900-23-048296 · ownership.xml · nonDerivative · entry 1

ALLEN BRIAN F. · CIK 0001975816 · President and COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 568,090

F1 · kind: On June 8, 2023, as a result of the consummation of the transactions (the "Business Combination") contemplated by that certain Business Combination Agreement, dated December 13, 2022 and subsequently amended on April 23, 2023, by and among the issuer, NET Power Operations LLC (f/k/a Rice Acquisition Holdings II LLC) ("Opco"), Topo Buyer Co, LLC, Topo Merger Sub, LLC and NET Power, LLC ("Old NET Power"), in exchange for the equity interests of Old NET Power, which were cancelled, Mr. Allen received Class A units of Opco (the "Opco Units") and a corresponding number of shares of the issuer's Class B common stock (which together are exchangeable into shares of the issuer's Class A Common Stock on a one-for-one basis).

F1 · price: On June 8, 2023, as a result of the consummation of the transactions (the "Business Combination") contemplated by that certain Business Combination Agreement, dated December 13, 2022 and subsequently amended on April 23, 2023, by and among the issuer, NET Power Operations LLC (f/k/a Rice Acquisition Holdings II LLC) ("Opco"), Topo Buyer Co, LLC, Topo Merger Sub, LLC and NET Power, LLC ("Old NET Power"), in exchange for the equity interests of Old NET Power, which were cancelled, Mr. Allen received Class A units of Opco (the "Opco Units") and a corresponding number of shares of the issuer's Class B common stock (which together are exchangeable into shares of the issuer's Class A Common Stock on a one-for-one basis).

SEC source: 0001213900-23-048269 · ownership.xml · derivative · entry 2

PATEL AKASH S. · CIK 0001979780 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 790,448

Underlying: Class A common stock · 790,448 shares

Expires not disclosed

F2 · derivative.exercise_price: The Opco Units (together with the corresponding shares of the issuer's Class B common stock) are exchangeable into cash or shares of the issuer's Class A common stock, at the issuer's election, on a one-for-one basis and have no expiration date.

F1 · kind: On June 8, 2023, as a result of the consummation of the transactions (the "Business Combination") contemplated by that certain Business Combination Agreement, dated December 13, 2022 and subsequently amended on April 23, 2023, by and among the issuer, NET Power Operations LLC (f/k/a Rice Acquisition Holdings II LLC) ("Opco"), Topo Buyer Co, LLC, Topo Merger Sub, LLC and NET Power, LLC ("Old NET Power"), in exchange for the equity interests of Old NET Power, which were cancelled, Mr. Patel received Class A units of Opco (the "Opco Units") and a corresponding number of shares of the issuer's Class B common stock (which together are exchangeable into shares of the issuer's Class A Common Stock on a one-for-one basis).

F1 · price: On June 8, 2023, as a result of the consummation of the transactions (the "Business Combination") contemplated by that certain Business Combination Agreement, dated December 13, 2022 and subsequently amended on April 23, 2023, by and among the issuer, NET Power Operations LLC (f/k/a Rice Acquisition Holdings II LLC) ("Opco"), Topo Buyer Co, LLC, Topo Merger Sub, LLC and NET Power, LLC ("Old NET Power"), in exchange for the equity interests of Old NET Power, which were cancelled, Mr. Patel received Class A units of Opco (the "Opco Units") and a corresponding number of shares of the issuer's Class B common stock (which together are exchangeable into shares of the issuer's Class A Common Stock on a one-for-one basis).

F2 · derivative.exercise_date: The Opco Units (together with the corresponding shares of the issuer's Class B common stock) are exchangeable into cash or shares of the issuer's Class A common stock, at the issuer's election, on a one-for-one basis and have no expiration date.

F2 · derivative.expiration_date: The Opco Units (together with the corresponding shares of the issuer's Class B common stock) are exchangeable into cash or shares of the issuer's Class A common stock, at the issuer's election, on a one-for-one basis and have no expiration date.

SEC source: 0001213900-23-048269 · ownership.xml · nonDerivative · entry 1

PATEL AKASH S. · CIK 0001979780 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 790,448

F1 · kind: On June 8, 2023, as a result of the consummation of the transactions (the "Business Combination") contemplated by that certain Business Combination Agreement, dated December 13, 2022 and subsequently amended on April 23, 2023, by and among the issuer, NET Power Operations LLC (f/k/a Rice Acquisition Holdings II LLC) ("Opco"), Topo Buyer Co, LLC, Topo Merger Sub, LLC and NET Power, LLC ("Old NET Power"), in exchange for the equity interests of Old NET Power, which were cancelled, Mr. Patel received Class A units of Opco (the "Opco Units") and a corresponding number of shares of the issuer's Class B common stock (which together are exchangeable into shares of the issuer's Class A Common Stock on a one-for-one basis).

F1 · price: On June 8, 2023, as a result of the consummation of the transactions (the "Business Combination") contemplated by that certain Business Combination Agreement, dated December 13, 2022 and subsequently amended on April 23, 2023, by and among the issuer, NET Power Operations LLC (f/k/a Rice Acquisition Holdings II LLC) ("Opco"), Topo Buyer Co, LLC, Topo Merger Sub, LLC and NET Power, LLC ("Old NET Power"), in exchange for the equity interests of Old NET Power, which were cancelled, Mr. Patel received Class A units of Opco (the "Opco Units") and a corresponding number of shares of the issuer's Class B common stock (which together are exchangeable into shares of the issuer's Class A Common Stock on a one-for-one basis).