NET Power Inc

Appointment of Chief Accounting Officer

On May 8, 2024, Kelly Rosser, age 48, was appointed as Chief Accounting Officer of the Company. Ms. Rosser joined the Company in January 2024. Prior to joining the Company, Ms. Rosser served as Heliogen, Inc.’s Chief Accounting Officer from August 2022 to January 2024 and also served as Heliogen, Inc.’s interim Chief Financial Officer from February 2023 until July 2023. Ms. Rosser served as Corporate Controller at Zenith Energy Management, LLC (“Zenith”) from April 2019 to August 2022. Previously, Ms. Rosser was an independent consultant from September 2016 to April 2018 and served as Vice President, Chief Accounting Officer and Controller at Par Pacific Holdings, Inc. (NYSE: PARR) from May 2014 to September 2016. Ms. Rosser is a senior level finance executive and a Certified Public Accountant in the state of Texas with extensive exposure to the energy industry, including power generation, midstream, exploration and production, and refining companies. Ms. Rosser has an M.S. in Accounting and a B.B.A from Texas A&M University.

Ms. Rosser has no family relationships, as defined in Item 401 of Regulation S-K, with any director or executive officer of the Company, and there was no arrangement or understanding between Ms. Rosser and any other person pursuant to which she was appointed as an officer. In addition, there have been no transactions directly or indirectly involving Ms. Rosser that would be required to be disclosed pursuant to Item 404(a) of Regulation S-K.

Insider Trading Arrangements

During the three months ended March 31, 2024, none of our directors or “officers” (as such term is defined in Rule 16a-1(f) under the Exchange Act) adopted or terminated a “Rule 10b5-1 trading arrangement” or “non-Rule 10b5-1 trading arrangement" (as each term is defined in Item 408(a) of Regulation S-K).