Presentation Scheduled for Tuesday, October 21, 2025, at 10:00 a.m. PT

Capstone Green Energy Holdings, Inc., and its subsidiaries (the "Company” or “Capstone”) (OTCQX: CGEH), announced today that it will present at the 19th annual LD Micro (“LDM”) Main Event XIX Investor Conference, on October 21, 2025, at the iconic Hotel del Coronado in San Diego, California. Vince Canino, President and Chief Executive Officer, will present the Company’s outlook and perspective on the rapidly expanding Distributed Generation market, including key segments such as data centers, microgrids, ports, and station power.

"The Main Event is a culmination of over 25 years of hard work and passion for high-growth small company investing. There is no organization on planet Earth that cares more about small companies succeeding than LD Micro. To be able to connect with our community in one of the most beautiful settings imaginable brings me considerable joy. We look forward to welcoming all of our attendees and ensuring that they have a wonderful and productive time," stated Chris Lahiji, Founder of LD Micro.

“We are truly excited about this conference, as it provides an important forum to engage directly with the investment community and discuss the compelling market dynamics shaping our industry today,” said Vince Canino, President and Chief Executive Officer of Capstone Green Energy. “We look forward to showcasing how our strategic initiatives have strengthened Capstone’s business and, together with the current tailwinds in distributed generation, position us to drive long-term shareholder value.”

Event Details

• Conference: LD Micro Main Event XIX
• Date: Tuesday, October 21, 2025
• Time: 10:00 a.m. PT
• Location: Hotel del Coronado, San Diego, CA
• Virtual Registration: Register Here

Capstone’s President and Chief Executive Officer, Vince Canino, and Chief Financial Officer, John Juric, will also be available throughout the day for one-on-one meetings with qualified professional investors. To register and schedule a meeting with management, please Register Here.

Presentation materials will be made available on the day of the conference in the Investor Relations section of the Company’s website at www.CapstoneGreenEnergy.com.

Summary of LD Micro Main Event XIX

The 2025 LD Micro Main Event XIX will run from October 19th to the 21st at the Hotel del Coronado in San Diego, California.

The first day will consist of registration, keynote speakers, and some gorgeous views of the Pacific. It will be followed by two full days of company presentations and one-on-one investor meetings concluded with a closing reception.

This three-day event will feature around 120 companies, presenting in half-hour increments, and attending private meetings with investors.

About LD Micro

LD Micro is dedicated to being the definitive resource in the small-cap space. From its industry-recognized index and robust data to hosting some of the most influential events each year, LD Micro’s mission is to provide unparalleled access and insight for those seeking the next generation of great companies.

To learn more about LD Micro, visit:

http://www.ldmicro.com

To learn more about Freedom US Markets LLC, visit:

https://www.freedomcapmkts.com/

To register, please contact registration@ldmicro.com.

About Capstone Green Energy

For nearly four decades, Capstone Green Energy has been a leader in clean technology, pioneering the use of microturbines to revolutionize how businesses manage their energy needs sustainably. In collaboration with our global network of dedicated distributors, we have shipped over 10,600 units to 88 countries, helping customers significantly reduce their carbon footprints through high-efficiency, on-site energy systems and microgrid solutions.

Our commitment to a cleaner, more resilient energy future remains steadfast. Today, we offer a comprehensive range of microturbine products, from 65kW systems to multi-megawatt solutions, tailored to meet the specific needs of commercial, industrial, and utility-scale customers. In addition to our core microturbine technology, Capstone’s growing portfolio includes flexible Energy-as-a-Service (EaaS) offerings, such as build-own & transfer models, PPA’s, lease to own and rental solutions, are designed to provide maximum value and energy security.

Capstone’s fast, turnkey power rental solutions are designed for customers with limited capital budgets or short-term energy needs. For more information, please contact us at rentals@CGRNenergy.com.

In our pursuit of cutting-edge energy solutions, Capstone has forged strategic partnerships to expand our impact and capabilities. Through these collaborations, we proudly offer advanced technologies that leverage renewable gas and heat recovery solutions—further enhancing the sustainability, efficiency, and reliability of our clients' operations. These integrated offerings reflect our commitment to building a cleaner, more responsible energy future.

For more information about the Company, please visit www.CapstoneGreenEnergy.com. Follow Capstone Green Energy on Twitter, LinkedIn, Instagram, Facebook, and YouTube.

Cautionary Notes

This release contains forward-looking statements as defined in the Private Securities Litigation Reform Act of 1995, including statements regarding the impact of the acquisition of Cal Microturbine on the Company’s earnings, cash flow and operational efficiency. The Company has tried to identify these forward-looking statements by using words such as “expect,” “anticipate,” “believe,” “could,” “should,” “estimate,” “intend,” “may,” “will,” “plan,” “goal” and similar terms and phrases, but such words, terms and phrases are not the exclusive means of identifying such statements. Actual results, performance and achievements could differ materially from those expressed in, or implied by, these forward-looking statements due to a variety of risks, uncertainties and other factors, including, but not limited to, the following: the Company being unable to achieve the anticipated benefits of the acquisition; the acquired business not performing as expected; the Company assuming unexpected risks, liabilities and obligations of the acquired business; transaction costs associated with the acquisition; the risk that disruptions from the acquisition will harm the parties’ businesses, including current plans and operations; the ability of the parties to retain and hire key personnel; potential adverse reactions or changes to business relationships resulting from the announcement of the completion of the acquisition; the Company’s liquidity position and ability to access capital; the Company’s ability to continue as a going concern; the Company’s ability to successfully remediate the material weaknesses in internal control over financial reporting; the Company’s ability to realize the anticipated benefits of its financial restructuring; the Company’s ability to comply with the restrictions imposed by covenants contained in the exit financing and the new subsidiary limited liability company agreement; the uncertainty associated with the imposition of tariffs and trade barriers and changes in trade policies; employee attrition and the Company’s ability to retain senior management and other key personnel; the Company's ability to develop new products and enhance existing products; product quality issues, including the adequacy of reserves therefor and warranty cost exposure; intense competition; financial performance of the oil and natural gas industry and other general business, industry and economic conditions; and the impact of litigation and regulatory proceedings. For a detailed discussion of factors that could affect the Company’s future operating results, please see the Company’s filings with the Securities and Exchange Commission, including the risk factors contained in our most recent Annual Report on Form 10-K. Except as expressly required by the federal securities laws, the Company undertakes no obligation to update or revise any forward-looking statements, whether as a result of new information, changed circumstances or future events or for any other reason.

View source version on businesswire.com: https://www.businesswire.com/news/home/20251020224704/en/

We look forward to showcasing how our strategic initiatives have strengthened Capstone’s business and, together with the current tailwinds in distributed generation, position us to drive long-term shareholder value