NPEH, LLC

SEC source: 0001104659-25-119362 · tm2532961-2_4seq1.xml · nonDerivative · entry 2

NPEH, LLC · CIK 0001981772 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,730,000

F2 · price: The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $2.85 to $2.98. NPEH will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

SEC source: 0001104659-25-119362 · tm2532961-2_4seq1.xml · nonDerivative · entry 1

NPEH, LLC · CIK 0001981772 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,835,000

F1 · price: The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $2.885 to $3.00. NPEH, LLC ("NPEH") will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

SEC source: 0001104659-25-117791 · tm2532523-1_4seq1.xml · nonDerivative · entry 1

NPEH, LLC · CIK 0001981772 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,900,000

F1 · price: The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $2.885 to $3.015. NPEH, LLC ("NPEH") will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

SEC source: 0001104659-25-115529 · tm2531990-2_4seq1.xml · nonDerivative · entry 2

NPEH, LLC · CIK 0001981772 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,100,000

F2 · price: The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $2.50 to $2.505. NPEH will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

SEC source: 0001104659-25-115529 · tm2531990-2_4seq1.xml · nonDerivative · entry 1

NPEH, LLC · CIK 0001981772 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,117,163

F1 · price: The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $2.50 to $2.7406. NPEH, LLC ("NPEH") will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

SEC source: 0001104659-25-114214 · tm2531645-2_4seq1.xml · nonDerivative · entry 2

NPEH, LLC · CIK 0001981772 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,250,000

F2 · price: The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $2.505 to $2.715. NPEH, LLC ("NPEH") will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

SEC source: 0001104659-25-114214 · tm2531645-2_4seq1.xml · nonDerivative · entry 1

NPEH, LLC · CIK 0001981772 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,500,000

F1 · price: The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $2.76 to $2.885. NPEH, LLC ("NPEH") will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

SEC source: 0001104659-25-106551 · tm2530190-1_4seq1.xml · derivative · entry 5

NPEH, LLC · CIK 0001981772 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 20,729,880

Underlying: Class A Common Stock · 2,000,000 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.

F3 · derivative.exercise_price: The Class A Units of NET Power Operations LLC are exchangeable into shares of the Issuer's Class A Common Stock or, at the Issuer's election, cash, on a one-for-one basis and have no expiration date. On November 03, 2025, NPEH exchanged 2,000,000 Class A Units of NET Power Operations LLC for 2,000,000 shares of the Issuer's Class A Common Stock.

F3 · price: The Class A Units of NET Power Operations LLC are exchangeable into shares of the Issuer's Class A Common Stock or, at the Issuer's election, cash, on a one-for-one basis and have no expiration date. On November 03, 2025, NPEH exchanged 2,000,000 Class A Units of NET Power Operations LLC for 2,000,000 shares of the Issuer's Class A Common Stock.

F3 · derivative.exercise_date: The Class A Units of NET Power Operations LLC are exchangeable into shares of the Issuer's Class A Common Stock or, at the Issuer's election, cash, on a one-for-one basis and have no expiration date. On November 03, 2025, NPEH exchanged 2,000,000 Class A Units of NET Power Operations LLC for 2,000,000 shares of the Issuer's Class A Common Stock.

F3 · derivative.expiration_date: The Class A Units of NET Power Operations LLC are exchangeable into shares of the Issuer's Class A Common Stock or, at the Issuer's election, cash, on a one-for-one basis and have no expiration date. On November 03, 2025, NPEH exchanged 2,000,000 Class A Units of NET Power Operations LLC for 2,000,000 shares of the Issuer's Class A Common Stock.

SEC source: 0001104659-25-106551 · tm2530190-1_4seq1.xml · nonDerivative · entry 4

NPEH, LLC · CIK 0001981772 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 20,729,880

F4 · price: For each Class A Unit of Net Power Operations LLC, NPEH owns a corresponding share of Class B Common Stock of the Issuer. Upon the exchange of 2,000,000 Class A Units of Net Power Operations LLC, an equal number of shares of Class B Common Stock of the Issuer held by NPEH, which have no economic value, were cancelled.

SEC source: 0001104659-25-106551 · tm2530190-1_4seq1.xml · nonDerivative · entry 3

NPEH, LLC · CIK 0001981772 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,838,653

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.

F3 · price: The Class A Units of NET Power Operations LLC are exchangeable into shares of the Issuer's Class A Common Stock or, at the Issuer's election, cash, on a one-for-one basis and have no expiration date. On November 03, 2025, NPEH exchanged 2,000,000 Class A Units of NET Power Operations LLC for 2,000,000 shares of the Issuer's Class A Common Stock.

SEC source: 0001104659-25-106551 · tm2530190-1_4seq1.xml · nonDerivative · entry 2

NPEH, LLC · CIK 0001981772 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,838,653

F2 · price: The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $4.00 to $4.01. NPEH will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

SEC source: 0001104659-25-106551 · tm2530190-1_4seq1.xml · nonDerivative · entry 1

NPEH, LLC · CIK 0001981772 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,847,130

F1 · price: The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $4.05 to $4.06. NPEH, LLC ("NPEH") will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

SEC source: 0001104659-25-104537 · tm2529849-2_4seq1.xml · nonDerivative · entry 3

NPEH, LLC · CIK 0001981772 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,865,246

F3 · price: The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $4.00 to $4.105. NPEH will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

SEC source: 0001104659-25-104537 · tm2529849-2_4seq1.xml · nonDerivative · entry 2

NPEH, LLC · CIK 0001981772 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,973,000

F2 · price: The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $3.72 to $4.315. NPEH will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

SEC source: 0001104659-25-104537 · tm2529849-2_4seq1.xml · nonDerivative · entry 1

NPEH, LLC · CIK 0001981772 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,759,832

F1 · price: The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $3.72 to $3.78. NPEH, LLC ("NPEH") will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

SEC source: 0001104659-25-102684 · tm2529510-2_4seq1.xml · nonDerivative · entry 3

NPEH, LLC · CIK 0001981772 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,767,417

F3 · price: The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $3.705 to $3.85. NPEH will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

SEC source: 0001104659-25-102684 · tm2529510-2_4seq1.xml · nonDerivative · entry 2

NPEH, LLC · CIK 0001981772 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,967,417

F2 · price: The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $3.70 to $3.725. NPEH will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

SEC source: 0001104659-25-102684 · tm2529510-2_4seq1.xml · nonDerivative · entry 1

NPEH, LLC · CIK 0001981772 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,000,000

F1 · price: The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $3.33 to $4.05. NPEH, LLC ("NPEH") will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

SEC source: 0001104659-25-101627 · tm2529224-1_4seq1.xml · nonDerivative · entry 3

NPEH, LLC · CIK 0001981772 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,284,100

F3 · price: The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $3.225 to $3.365. NPEH will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

SEC source: 0001104659-25-101627 · tm2529224-1_4seq1.xml · nonDerivative · entry 2

NPEH, LLC · CIK 0001981772 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,373,100

F2 · price: The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $3.51 to $3.5775. NPEH will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

SEC source: 0001104659-25-101627 · tm2529224-1_4seq1.xml · nonDerivative · entry 1

NPEH, LLC · CIK 0001981772 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,562,400

F1 · price: The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $3.51 to $3.72. NPEH, LLC ("NPEH") will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

SEC source: 0001104659-25-100174 · tm2528932-1_4seq1.xml · nonDerivative · entry 5

NPEH, LLC · CIK 0001981772 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,763,400

F5 · price: The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $4.50 to $4.83. NPEH will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

SEC source: 0001104659-25-100174 · tm2528932-1_4seq1.xml · nonDerivative · entry 4

NPEH, LLC · CIK 0001981772 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,777,359

F4 · price: The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $4.85 to $4.925. NPEH will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

SEC source: 0001104659-25-100174 · tm2528932-1_4seq1.xml · nonDerivative · entry 3

NPEH, LLC · CIK 0001981772 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,900,000

F3 · price: The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $4.67 to $4.93. NPEH will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

SEC source: 0001104659-25-100174 · tm2528932-1_4seq1.xml · derivative · entry 6

NPEH, LLC · CIK 0001981772 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 22,729,880

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.

F1 · derivative.exercise_price: The Class A Units of NET Power Operations LLC are exchangeable into shares of the Issuer's Class A Common Stock or, at the Issuer's election, cash, on a one-for-one basis and have no expiration date. On October 14, 2025, NPEH, LLC ("NPEH") exchanged 4,000,000 Class A Units of NET Power Operations LLC for 4,000,000 shares of the Issuer's Class A Common Stock.

F1 · price: The Class A Units of NET Power Operations LLC are exchangeable into shares of the Issuer's Class A Common Stock or, at the Issuer's election, cash, on a one-for-one basis and have no expiration date. On October 14, 2025, NPEH, LLC ("NPEH") exchanged 4,000,000 Class A Units of NET Power Operations LLC for 4,000,000 shares of the Issuer's Class A Common Stock.

F1 · derivative.exercise_date: The Class A Units of NET Power Operations LLC are exchangeable into shares of the Issuer's Class A Common Stock or, at the Issuer's election, cash, on a one-for-one basis and have no expiration date. On October 14, 2025, NPEH, LLC ("NPEH") exchanged 4,000,000 Class A Units of NET Power Operations LLC for 4,000,000 shares of the Issuer's Class A Common Stock.

F1 · derivative.expiration_date: The Class A Units of NET Power Operations LLC are exchangeable into shares of the Issuer's Class A Common Stock or, at the Issuer's election, cash, on a one-for-one basis and have no expiration date. On October 14, 2025, NPEH, LLC ("NPEH") exchanged 4,000,000 Class A Units of NET Power Operations LLC for 4,000,000 shares of the Issuer's Class A Common Stock.

SEC source: 0001104659-25-100174 · tm2528932-1_4seq1.xml · nonDerivative · entry 2

NPEH, LLC · CIK 0001981772 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 22,729,880

F2 · price: For each Class A Unit of Net Power Operations LLC, NPEH owns a corresponding share of Class B Common Stock of the Issuer. Upon the exchange of 4,000,000 Class A Units of Net Power Operations LLC, an equal number of shares of Class B Common Stock of the Issuer held by NPEH, which have no economic value, were cancelled.

SEC source: 0001104659-25-100174 · tm2528932-1_4seq1.xml · nonDerivative · entry 1

NPEH, LLC · CIK 0001981772 · 10% 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.

F1 · price: The Class A Units of NET Power Operations LLC are exchangeable into shares of the Issuer's Class A Common Stock or, at the Issuer's election, cash, on a one-for-one basis and have no expiration date. On October 14, 2025, NPEH, LLC ("NPEH") exchanged 4,000,000 Class A Units of NET Power Operations LLC for 4,000,000 shares of the Issuer's Class A Common Stock.

SEC source: 0001104659-24-123262 · tm2429528-3_4seq1.xml · nonDerivative · entry 1

NPEH, LLC · CIK 0001981772 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

F1 · price: The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $12.50 to $13.46. NPEH, LLC will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

SEC source: 0001104659-24-121689 · tm2429117-1_4seq1.xml · nonDerivative · entry 4

NPEH, LLC · CIK 0001981772 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 431,009

F4 · price: The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $12.55 to $13.04. NPEH will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

SEC source: 0001104659-24-121689 · tm2429117-1_4seq1.xml · nonDerivative · entry 3

NPEH, LLC · CIK 0001981772 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 940,049

F3 · price: The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $12.315 to $12.93. NPEH will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

SEC source: 0001104659-24-121689 · tm2429117-1_4seq1.xml · derivative · entry 5

NPEH, LLC · CIK 0001981772 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 26,729,880

Underlying: Class A Common Stock · 1,260,420 shares

Expires not disclosed

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

F1 · derivative.exercise_price: The Class A Units of NET Power Operations LLC are exchangeable into shares of the Issuer's Class A Common Stock or, at the Issuer's election, cash, on a one-for-one basis and have no expiration date. On November 19, 2024, NPEH, LLC ("NPEH") exchanged 1,260,420 Class A Units of NET Power Operations LLC for 1,260,420 shares of the Issuer's Class A Common Stock.

F1 · price: The Class A Units of NET Power Operations LLC are exchangeable into shares of the Issuer's Class A Common Stock or, at the Issuer's election, cash, on a one-for-one basis and have no expiration date. On November 19, 2024, NPEH, LLC ("NPEH") exchanged 1,260,420 Class A Units of NET Power Operations LLC for 1,260,420 shares of the Issuer's Class A Common Stock.

F1 · derivative.exercise_date: The Class A Units of NET Power Operations LLC are exchangeable into shares of the Issuer's Class A Common Stock or, at the Issuer's election, cash, on a one-for-one basis and have no expiration date. On November 19, 2024, NPEH, LLC ("NPEH") exchanged 1,260,420 Class A Units of NET Power Operations LLC for 1,260,420 shares of the Issuer's Class A Common Stock.

F1 · derivative.expiration_date: The Class A Units of NET Power Operations LLC are exchangeable into shares of the Issuer's Class A Common Stock or, at the Issuer's election, cash, on a one-for-one basis and have no expiration date. On November 19, 2024, NPEH, LLC ("NPEH") exchanged 1,260,420 Class A Units of NET Power Operations LLC for 1,260,420 shares of the Issuer's Class A Common Stock.

SEC source: 0001104659-24-121689 · tm2429117-1_4seq1.xml · nonDerivative · entry 2

NPEH, LLC · CIK 0001981772 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 26,729,880

F2 · price: For each Class A Unit of Net Power Operations LLC, NPEH owns a corresponding share of Class B Common Stock of the Issuer. Upon the exchange of 1,260,420 Class A Units of Net Power Operations LLC, an equal number of shares of Class B Common Stock of the Issuer held by NPEH, which have no economic value, were cancelled.

SEC source: 0001104659-24-121689 · tm2429117-1_4seq1.xml · nonDerivative · entry 1

NPEH, LLC · CIK 0001981772 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,260,420

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

F1 · price: The Class A Units of NET Power Operations LLC are exchangeable into shares of the Issuer's Class A Common Stock or, at the Issuer's election, cash, on a one-for-one basis and have no expiration date. On November 19, 2024, NPEH, LLC ("NPEH") exchanged 1,260,420 Class A Units of NET Power Operations LLC for 1,260,420 shares of the Issuer's Class A Common Stock.

SEC source: 0001104659-24-109960 · tm2426503-2_4seq1.xml · nonDerivative · entry 2

NPEH, LLC · CIK 0001981772 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

F2 · price: The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $7.10 to $7.555. The Reporting Person will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

SEC source: 0001104659-24-109960 · tm2426503-2_4seq1.xml · nonDerivative · entry 1

NPEH, LLC · CIK 0001981772 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 199,369

F1 · price: The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $7.00 to $7.175. The Reporting Person will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

SEC source: 0001104659-24-108149 · tm2426102-2_4seq1.xml · nonDerivative · entry 2

NPEH, LLC · CIK 0001981772 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 716,987

F2 · price: The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $6.90 to $7.00. The Reporting Person will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

SEC source: 0001104659-24-108149 · tm2426102-2_4seq1.xml · nonDerivative · entry 1

NPEH, LLC · CIK 0001981772 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 837,487

F1 · price: The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $6.90 to $7.04. The Reporting Person will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

SEC source: 0001104659-24-106771 · tm2425771-1_4seq1.xml · nonDerivative · entry 3

NPEH, LLC · CIK 0001981772 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 960,078

F3 · price: The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $7.00 to $7.02. The Reporting Person will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

SEC source: 0001104659-24-106771 · tm2425771-1_4seq1.xml · derivative · entry 4

NPEH, LLC · CIK 0001981772 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 27,990,300

Underlying: Class A Common Stock · 1,015,000 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.

F1 · derivative.exercise_price: The Class A Units of NET Power Operations LLC are exchangeable into shares of the Issuer's Class A Common Stock or, at the Issuer's election, cash, on a one-for-one basis and have no expiration date. On September 25, 2024, the Reporting Person exchanged 1,015,000 Class A Units of NET Power Operations LLC for 1,015,000 shares of the Issuer's Class A Common Stock.

F1 · derivative.exercise_date: The Class A Units of NET Power Operations LLC are exchangeable into shares of the Issuer's Class A Common Stock or, at the Issuer's election, cash, on a one-for-one basis and have no expiration date. On September 25, 2024, the Reporting Person exchanged 1,015,000 Class A Units of NET Power Operations LLC for 1,015,000 shares of the Issuer's Class A Common Stock.

F1 · derivative.expiration_date: The Class A Units of NET Power Operations LLC are exchangeable into shares of the Issuer's Class A Common Stock or, at the Issuer's election, cash, on a one-for-one basis and have no expiration date. On September 25, 2024, the Reporting Person exchanged 1,015,000 Class A Units of NET Power Operations LLC for 1,015,000 shares of the Issuer's Class A Common Stock.

SEC source: 0001104659-24-106771 · tm2425771-1_4seq1.xml · nonDerivative · entry 2

NPEH, LLC · CIK 0001981772 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 27,990,300

F2 · price: For each Class A Unit of Net Power Operations LLC, the Reporting Person owns a corresponding share of Class B Common Stock of the Issuer. Upon the exchange of 1,015,000 Class A Units of Net Power Operations LLC, an equal number of shares of Class B Common Stock of the Issuer held by the Reporting Person, which have no economic value, were cancelled.

SEC source: 0001104659-24-106771 · tm2425771-1_4seq1.xml · nonDerivative · entry 1

NPEH, LLC · CIK 0001981772 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,015,000

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.

F1 · price: The Class A Units of NET Power Operations LLC are exchangeable into shares of the Issuer's Class A Common Stock or, at the Issuer's election, cash, on a one-for-one basis and have no expiration date. On September 25, 2024, the Reporting Person exchanged 1,015,000 Class A Units of NET Power Operations LLC for 1,015,000 shares of the Issuer's Class A Common Stock.

SEC source: 0001104659-24-101441 · tm2424426-1_4seq1.xml · nonDerivative · entry 3

NPEH, LLC · CIK 0001981772 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

F3 · price: The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $7.00 to $7.11. The Reporting Person will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

SEC source: 0001104659-24-101441 · tm2424426-1_4seq1.xml · nonDerivative · entry 2

NPEH, LLC · CIK 0001981772 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 342,364

F2 · price: The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $7.00 to $7.06. The Reporting Person will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

SEC source: 0001104659-24-101441 · tm2424426-1_4seq1.xml · nonDerivative · entry 1

NPEH, LLC · CIK 0001981772 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 422,486

F1 · price: The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $7.00 to $7.115. The Reporting Person will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

SEC source: 0001104659-24-100355 · tm2424151-1_4seq1.xml · derivative · entry 6

NPEH, LLC · CIK 0001981772 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 29,005,300

Underlying: Class A Common Stock · 500,000 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.

F4 · derivative.exercise_price: The Class A Units of NET Power Operations LLC are exchangeable into shares of the Issuer's Class A Common Stock or, at the Issuer's election, cash, on a one-for-one basis and have no expiration date. On September 16, 2024, the Reporting Person exchanged 500,000 Class A Units of NET Power Operations LLC for 500,000 shares of the Issuer's Class A Common Stock.

F4 · derivative.exercise_date: The Class A Units of NET Power Operations LLC are exchangeable into shares of the Issuer's Class A Common Stock or, at the Issuer's election, cash, on a one-for-one basis and have no expiration date. On September 16, 2024, the Reporting Person exchanged 500,000 Class A Units of NET Power Operations LLC for 500,000 shares of the Issuer's Class A Common Stock.

F4 · derivative.expiration_date: The Class A Units of NET Power Operations LLC are exchangeable into shares of the Issuer's Class A Common Stock or, at the Issuer's election, cash, on a one-for-one basis and have no expiration date. On September 16, 2024, the Reporting Person exchanged 500,000 Class A Units of NET Power Operations LLC for 500,000 shares of the Issuer's Class A Common Stock.

SEC source: 0001104659-24-100355 · tm2424151-1_4seq1.xml · nonDerivative · entry 5

NPEH, LLC · CIK 0001981772 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 29,005,300

F5 · price: For each Class A Unit of Net Power Operations LLC, the Reporting Person owns a corresponding share of Class B Common Stock of the Issuer. Upon the exchange of 500,000 Class A Units of Net Power Operations LLC, an equal number of shares of Class B Common Stock of the Issuer held by the Reporting Person, which have no economic value, were cancelled.

SEC source: 0001104659-24-100355 · tm2424151-1_4seq1.xml · nonDerivative · entry 4

NPEH, LLC · CIK 0001981772 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 567,445

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.

F4 · price: The Class A Units of NET Power Operations LLC are exchangeable into shares of the Issuer's Class A Common Stock or, at the Issuer's election, cash, on a one-for-one basis and have no expiration date. On September 16, 2024, the Reporting Person exchanged 500,000 Class A Units of NET Power Operations LLC for 500,000 shares of the Issuer's Class A Common Stock.

SEC source: 0001104659-24-100355 · tm2424151-1_4seq1.xml · nonDerivative · entry 3

NPEH, LLC · CIK 0001981772 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 67,445

F3 · price: The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $7.00 to $7.11. The Reporting Person will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

SEC source: 0001104659-24-100355 · tm2424151-1_4seq1.xml · nonDerivative · entry 2

NPEH, LLC · CIK 0001981772 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 104,197

F2 · price: The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $7.25 to $7.30. The Reporting Person will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.

SEC source: 0001104659-24-100355 · tm2424151-1_4seq1.xml · nonDerivative · entry 1

NPEH, LLC · CIK 0001981772 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 105,537

F1 · price: The price reported reflects the weighted average sales price. The shares of Class A Common Stock were sold in multiple trades at prices ranging from $7.25 to $7.29. The Reporting Person will provide upon request to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price.