Press Release

HOUSTON – (September 8, 2022) – KBR (NYSE: KBR) announced today it has been awarded a study to develop a carbon-neutral, green ammonia-based power system for a semi-submersible drilling unit owned by Odfjell.

KBR will collaborate with Odfjell, Equinor and Wärtsilä to assess conversion of the diesel generators on board drilling units to ammonia-fueled generators.

“We are excited to be a part of a collaborative effort that will fully integrate KBR’s semisubmersible technology expertise, Wärtsilä’s power systems, and Odfjell’s and Equinor’s operations capabilities, all to deliver a carbon-neutral solution,” said Jay Ibrahim, president of KBR Sustainable Technology Solutions. “This project demonstrates the role ammonia can play in decarbonizing existing assets and achieving net-zero targets. We pride ourselves in driving positive change, innovation and improvement in key markets, and we are proud to support our customers across the industry in their transitions to cleaner fuel options.”

KBR is the world's leading ammonia licensor and KBR’s K-GreeN® technology produces carbon-free ammonia based on electrolysis of water. K-GreeN is a viable, renewable alternative to decarbonizing the maritime and shipping industries.

KBR has been supporting Equinor and Odfjell for more than three decades with marine technology, engineering and original semi-submersible designs.

About KBR

We deliver science, technology and engineering solutions to governments and companies around the world. KBR employs approximately 28,000 people performing diverse, complex and mission-critical roles in 34 countries.

KBR is proud to work with its customers across the globe to provide technology, value-added services, and long-term operations and maintenance services to ensure consistent delivery with predictable results. At KBR, We Deliver. Visit www.kbr.com

Forward Looking Statement

The statements in this press release that are not historical statements, including statements regarding future financial performance, are forward-looking statements within the meaning of the federal securities laws. These statements are subject to numerous risks and uncertainties, many of which are beyond the company’s control that could cause actual results to differ materially from the results expressed or implied by the statements. These risks and uncertainties include, but are not limited to: the significant adverse impacts on economic and market conditions of the COVID-19 pandemic and the company’s ability to respond to the resulting challenges and business disruption; the recent dislocation of the global energy market; the company’s ability to manage its liquidity; the outcome of and the

publicity surrounding audits and investigations by domestic and foreign government agencies and legislative bodies; potential adverse proceedings by such agencies and potential adverse results and consequences from such proceedings; changes in capital spending by the company’s customers; the company’s ability to obtain contracts from existing and new customers and perform under those contracts; structural changes in the industries in which the company operates; escalating costs associated with and the performance of fixed-fee projects and the company’s ability to control its cost under its contracts; claims negotiations and contract disputes with the company’s customers; changes in the demand for or price of oil and/or natural gas; protection of intellectual property rights; compliance with environmental laws; changes in government regulations and regulatory requirements; compliance with laws related to income taxes; unsettled political conditions, war and the effects of terrorism; foreign operations and foreign exchange rates and controls; the development and installation of financial systems; the possibility of cyber and malware attacks; increased competition for employees; the ability to successfully complete and integrate acquisitions; and operations of joint ventures, including joint ventures that are not controlled by the company.

The company’s most recently filed Annual Report on Form 10-K, any subsequent Form 10-Qs and 8-Ks, and other U.S. Securities and Exchange Commission filings discuss some of the important risk factors that the company has identified that may affect its business, results of operations and financial condition. Except as required by law, the company undertakes no obligation to revise or update publicly any forward-looking statements for any reason.

For further information, please contact:

Investors

Alison Vasquez

Vice President, Investor Relations

713-753-5082

Investors@kbr.com

Media

Philip Ivy

Vice President, Global Communications and Marketing

713-753-3800

MediaRelations@kbr.com