Exhibit 99.1

KULR Technology Group Set to Join Russell 3000® Index

HOUSTON / GLOBENEWSWIRE / May 27, 2025 / KULR Technology Group, Inc. (NYSE American: KULR) (the "Company" or "KULR"), a global leader in sustainable energy management, today announced it is set to join the broad-market Russell 3000® Index, effective after the United States market opens on June 30, as part of the 2025 Russell indexes reconstitution.

The annual reconstitution of the Russell US indexes captures the 4,000 largest US stocks as of April 30, ranking them by total market capitalization. Membership in the Russell 3000® Index, which remains in place for one year, means automatic inclusion in the large-cap Russell 1000® Index or small-cap Russell 2000® Index as well as the appropriate growth and value style indexes. FTSE Russell determines membership for its Russell indexes primarily by objective, market-capitalization rankings, and style attributes.

“KULR is honored to be included in both the Russell 3000® and Russell Microcap® Indexes,” said Michael Mo, CEO of KULR. “This marks another important milestone in our growth trajectory and is expected to enhance both our visibility and liquidity among institutional investors.”

Russell indexes are widely used by investment managers and institutional investors for index funds and as benchmarks for active investment strategies. According to data as of the end of June 2024, about $10.6 trillion in assets are benchmarked against the Russell US indexes, which belong to FTSE Russell, the global index provider.

Fiona Bassett, CEO of FTSE Russell, an LSEG business, commented: “The Russell indexes have continuously adapted to the evolving dynamic US economy, and it’s crucial to fully recalibrate the suite of Russell US Indexes, ensuring the indexes maintain an accurate representation of the market. The transition to a semi-annual reconstitution frequency from 2026 will ensure our indexes continue to represent the market and maintain the purpose of the index as a portfolio benchmark.”

For more information on the Russell 3000® Index and the Russell indexes reconstitution, go to the “Russell Reconstitution” section on the FTSE Russell website.

About KULR Technology Group Inc.

KULR Technology Group Inc. (NYSE American: KULR) delivers cutting edge energy storage solutions for space, aerospace, and defense by leveraging a foundation of in-house battery design expertise, comprehensive cell and battery testing suite, and battery fabrication and production capabilities. The Company’s holistic offering allows delivery of commercial-off-the-shelf and custom next generation energy storage systems in rapid timelines for a fraction of the cost compared to traditional programs. On December 4, 2024, KULR announced that its Board of Directors has agreed to include bitcoin as a primary asset in its treasury program and committed to allocating up to 90% of its surplus cash to the acquisition of bitcoin. For more information, please visit www.kulr.ai.

About FTSE Russell, an LSEG Business

FTSE Russell is a global index leader that provides innovative benchmarking, analytics and data solutions for investors worldwide. FTSE Russell calculates thousands of indexes that measure and benchmark markets and asset classes in more than 70 countries, covering 98% of the investable market globally. FTSE Russell index expertise and products are used extensively by institutional and retail investors globally. Approximately $18.1 trillion is benchmarked to FTSE Russell indexes. Leading asset owners, asset managers, ETF providers and investment banks choose FTSE Russell indexes to benchmark their investment performance and create ETFs, structured products and index-based derivatives. A core set of universal principles guides FTSE Russell index design and management: a transparent rules-based methodology is informed by independent committees of leading market participants. FTSE Russell is focused on applying the highest industry standards in index design and governance and embraces the IOSCO Principles. FTSE Russell is also focused on index innovation and customer partnerships as it seeks to enhance the breadth, depth and reach of its offering.

FTSE Russell is wholly owned by London Stock Exchange Group.

For more information, visit FTSE Russell.

Safe Harbor Statement

This release contains certain forward-looking statements based on our current expectations, forecasts and assumptions that involve risks and uncertainties. Forward-looking statements in this release are based on information available to us as of the date hereof. Our actual results may differ materially from those stated or implied in such forward-looking statements, due to risks and uncertainties associated with our business, which include the risk factors disclosed in our Form 10-K filed with the Securities and Exchange Commission on March 31, 2025, as may be amended or supplemented by other reports we file with the Securities and Exchange Commission from time to time. Forward-looking statements include statements regarding our expectations, beliefs, intentions, or strategies regarding the future and can be identified by forward-looking words such as “anticipate,” “believe,” “could,” “estimate,” “expect,” “intend,” “may,” “should,” and “would” or similar words. All forecasts are provided by management in this release are based on information available at this time and management expects that internal projections and expectations may change over time. In addition, the forecasts are entirely based on management’s best estimate of our future financial performance given our current contracts, current backlog of opportunities and conversations with new and existing customers about our products and services. We assume no obligation to update the information included in this press release, whether as a result of new information, future events or otherwise.

Investor Relations:

KULR Technology Group, Inc.

Phone: 858-866-8478 x 847

Email: ir@kulr.ai

KULR Media Relations:

M Group Strategic Communications (on behalf of KULR)

Email: kulr@mgroupsc.com