Press Release

HOUSTON – October 31, 2022– KBR (NYSE: KBR) announced today the launch of its mega 10,000 MTPD blue and green ammonia offering to help meet the growing global sustainable energy and fertilizer demands of today and the future.

The new offering leverages KBR’s proven leadership in capacity scale-up and integrates the company’s robust implemented designs with advanced digital technologies to provide owners the reliability, flexibility and scale required to deliver clean ammonia and hydrogen demands for energy transition.

“We are truly excited to launch our mega ammonia technology for the green hydrogen and ammonia space,” said Doug Kelly, KBR president of Technology. “Given the projected volumes for green hydrogen and ammonia, capacity scale will play a defining role in helping owners implement projects with favorable economics, and we are confident mega plants will allow our clients to realize attractive returns on their low-carbon hydrogen investments.”

Ammonia is increasingly viewed as a primary enabler of a renewable hydrogen energy economy. Global demand for clean ammonia is projected to grow exponentially based on anticipated use in power generation and marine transport, making larger production facilities increasingly attractive.

KBR is the world leader in ammonia technology, with around 50% share of licensed capacity. The company holds industry records for the largest capacity plants with a single converter, best energy efficiency and longest runs without shutdowns. KBR was the first to bring a 6,000 MPTD clean ammonia design to the market, and this new offering is a continuation of that innovation to deliver a net-zero hydrogen energy future. Since 1943, KBR has licensed, engineered or constructed 252 grassroots ammonia plants worldwide.

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

Jamie DuBray

Vice President, Investor Relations

713-753-5082

[email protected]

Media

Philip Ivy

Vice President, Global Communications and Marketing

713-753-3800

[email protected]