NEW YORK, June 2, 2026 /PRNewswire/ -- Dominari Holdings Inc. (Nasdaq: DOMH ) today issued the following letter to shareholders: Dear Shareholder, The rise of drones in our society has become ubiquitous. Whether it's the discussion of their use to make deliveries, their use to cover sporting events, or their constant presence when discussing conflicts in the middle east, drones are everywhere. And at Dominari, we are proud to play our part in building and supporting this growing American industry. Since our inception, Dominari has been involved in supporting this important new facet of American society, starting with Unusual Machines (NYSE American: UMAC). Dominari was involved with UMAC when it was still a private company, working with their outstanding leadership to help them prepare for going public. Dominari was then the lead underwriter on UMAC's IPO on the New York Stock Exchange. It was also Dominari's first IPO. We have continued to support UMAC through several follow-on offerings that have helped UMAC surpass a $1.5B valuation as of the close on May 29th. And recently, UMAC was highlighted as one of a select group of drone companies the Trump administration is reportedly considering for potential direct government funding. According to recent coverage by The Wall Street Journal, discussions have included possible financing structures involving a mix of debt and equity. Shares of Unusual Machines surged 50% following the report. In addition to UMAC, Dominari has worked with XTEND, which is set to go public through its proposed merger with JFB Construction Holdings (Nasdaq: JFB ). XTEND was also selected among a limited group of companies invited to participate in the Phase II Qualifier of the U.S. Department of Defense's Drone Dominance Program. The Drone Dominance Program is a large-scale defense initiative designed to accelerate the deployment of next-generation autonomous drone technologies, with a stated goal of supporting the procurement of more than 200,000 drones by 2027. Drone dominance was described as a "presidential priority" in President Trump's $1.5 trillion defense budget request for fiscal year 2027. XTEND expects to demonstrate its proprietary XOS operating system at the qualifier event this summer at Camp Grayling, showcasing scalable human-guided autonomous operations across complex and contested environments. Further, Powerus Corporation, which merged into Aureus Greenway Holdings (Nasdaq: PUSA ), was similarly selected to compete in the Phase II qualifier of the Drone Dominance Program with its MatrixFold multi-purpose attack drone, making Aureus Greenway another portfolio company participating in this approximately $1 billion Pentagon initiative. Dominari is incredibly proud of our work with these companies, and we wish each of them congratulations and continued success. The rise of the American drone industry is an important factor in our country's new economy, and we are honored to be a part of that rise. Please see below for an outline of the capital raises completed for each portfolio company, along with the associated timeframes. Unusual Machines, Inc.

XTEND selected among a limited group of companies invited to participate in next stage of major U.S. Department of Defense initiative expected to support procurement of more than 200,000 drones by 2027 XTEND set to go public through proposed merger with JFB Construction Holdings (Nasdaq: JFB) mid-2026 PALM BEACH, Fla., May 28, 2026 (GLOBE NEWSWIRE) -- JFB Construction Holdings (Nasdaq: JFB) (“JFB” or the “Company”), which recently announced its proposed business combination with XTEND, a leader in AI-powered autonomous robotics and operating systems, today announced that XTEND was selected as one of a limited group of companies invited to participate in the Phase II Qualifier of the U.S. Department of Defense’s Drone Dominance Program (“DDP”). The Drone Dominance Program is a large-scale U.S. defense initiative designed to accelerate the deployment of next-generation autonomous drone technologies across the U.S. military. According to public statements released by the program, the initiative is intended to support the procurement of more than 200,000 drones by 2027 for deployment across complex operational environments.  The Drone Dominance Program represents one of the largest emerging U.S. initiatives focused on accelerating the deployment and domestic scaling of autonomous drone systems for future military operations. XTEND was selected among a limited group of companies invited to participate in the next phase of the program, which is expected to take place this summer at Camp Grayling, Michigan. The qualifier event is expected to evaluate autonomous systems across complex operational scenarios and contested mission environments. During the qualifier event, XTEND expects to demonstrate how its proprietary XOS operating system enables scalable human-guided autonomous operations across complex and contested environments. XTEND’s proprietary XOS operating system powers human-guided autonomous platforms designed for defense, national security and public safety missions. XTEND systems have been deployed operationally in complex real-world environments and are designed to support scalable autonomous missions across defense, national security and public safety applications while enhancing operator effectiveness and reducing risk to personnel. “Modern operational environments require autonomous systems that can scale rapidly, operate reliably in contested conditions, and help keep operators out of harm’s way,” said Aviv Shapira, Co-Founder and Chief Executive Officer of XTEND. “We believe our participation in the next phase of the Drone Dominance Program reflects the growing importance of AI-powered autonomy, human-guided mission systems, and scalable operational robotics within the future U.S. defense ecosystem.” “XTEND’s advancement into the next phase of the Drone Dominance Program represents meaningful validation of the company’s autonomous systems, operational capabilities and growing role within the U.S. defense ecosystem,” said Joseph F. Basile, III, Chief Executive Officer of JFB Construction Holdings. “We believe this initiative reflects the Department of Defense’s increasing focus on scalable autonomous technologies, and XTEND is well positioned to support that evolving operational need.” +++ As announced on February 17, 2026, JFB Construction Holdings (Nasdaq: JFB) and XTEND entered into a definitive agreement to combine with XTEND in an all-stock transaction. The business combination is further supported by strategic investments from Eric Trump, Unusual Machines, American Ventures, LLC, Protego Ventures, and Aliya Capital. Following the closing of the business combination, the joint company is expected to be renamed XTEND AI Robotics and be listed on a U.S. national securities exchange under the “XTND.” About XTEND XTEND is a leader in software systems and artificial intelligence-powered robotics, deployed in high-threat, complex operational environments where human exposure carries significant risk. Powered by its proprietary XTEND Operating System (XOS), XTEND’s integrated software and advanced robotic hardware solutions are designed to provide autonomy at the edge. Operating across defense, law enforcement, and private security missions through a platform of robots, drones, and robotic subsystems, XTEND’s open architecture platform facilitates scalability across partners and third-party applications. With over 10,000 systems deployed in over 30 countries, XTEND’s solutions have been validated in five combat zones and operationally deployed by national defense, special-mission units, and security organizations across the globe. Founded in Tel Aviv, Israel, and headquartered in Tampa, Florida, XTEND delivers NDAA-compliant solutions through a global network of regional XFAB manufacturing facilities located in the U.S., the U.K., Singapore, Israel, and Latvia. For more information, visit www.xtend.me . About JFB Construction Holdings JFB Construction Holdings (Nasdaq: JFB) is a real estate development and construction company that has provided general contracting and construction management services in 36 U.S. states. For more information, visit the company’s SEC filings at www.sec.gov . Cautionary Note Regarding Forward-Looking Statements This communication contains, and oral statements made from time to time by our representatives may contain, forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, Section 27A of the Securities Act of 1933, as amended (the “Securities Act”), and Section 21E of the Securities Exchange Act of 1934, as amended. These forward-looking statements generally include statements regarding the expected size of the U.S. defense budgets for tactical strike and defense programs, the impact of Xtend receiving U.S. Army Fuze Safety Board for its high-voltage safety and arming system for FPV attack drones, the potential transaction between Xtend Reality Expansion Ltd. (“Xtend”) and JFB Construction Holdings (“JFB”), including statements regarding the expected impacts and benefits of the potential transaction, timing of the transaction closing, and strategic initiatives for Xtend AI Robotics, Inc. (“NewCo”) following the closing. All statements other than statements of historical facts contained in this communication may be forward-looking statements. In some cases, you can identify forward-looking statements by terms such as “may,” “will,” “outlook”, “should,” “expects,” “plans,” “anticipates,” “could,” “intends,” “targets,” “projects,” “contemplates,” “believes,” “estimates,” “predicts,” “potential” or “continue” or the negative of these terms or other similar expressions. The forward-looking statements in this communication are only predictions. Xtend’s and JFB’s management have based these forward-looking statements largely on their current expectations and projections about future events and financial trends that management believes may affect its business, financial condition and results of operations. These statements are neither promises nor guarantees and involve known and unknown risks, uncertainties and other important factors that may cause actual results, performance or achievements to be materially different from what is expressed or implied by the forward-looking statements, including, but not limited to: the transaction may not be consummated; there may be difficulties with the integration and in realizing the expected benefits of the transaction; Xtend and JFB may need to use resources that are needed in other parts of its business to do so; there may be liabilities that are not known, probable or estimable at this time; the transaction may result in the diversion of management’s time and attention to issues relating to the transaction and integration; expected synergies and operating efficiencies attributable to the transaction may not be achieved within its expected time-frames or at all; there may be significant transaction costs and integration costs in connection with the transaction; the possibility that JFB will not have sufficient cash at close to satisfy the minimum cash condition; unfavorable outcome of legal proceedings that may be instituted against JFB and Xtend following the announcement of the transaction; risks inherent to the business may result in additional strategic and operational risks, which may impact Xtend’s, NewCo’s and JFB’s risk profiles, which each company may not be able to mitigate effectively; JFB’s ability to complete construction projects or other transactions on schedule and budget; changes in weather and occurrence of natural disasters and pandemics; recent imposition of tariffs by governments on construction materials, such as steel, aluminum and lumber; disruptions in supply chains; increase in the cost of labor and construction materials; JFB’s ability to maintain safe work sites; Xtend’s dependence on a limited number of defense and governmental security customers for a substantial portion of its business; significant delays or reductions in appropriations, Xtend’s programs and certain government fundings and programs more broadly, including as a result of a prolonged continuing resolution and/or government shutdown, and/or related to the global security environment or other global events; increased competition within JFB’s and Xtend’s markets and bid protests; changes in procurement and other U.S. and foreign laws, including changes through executive orders, contract terms and practices applicable to our industry, findings by certain applicable governments as to our compliance with such requirements, more aggressive enforcement of such requirements and changes in Xtend’s customers’ business practices globally; the improper conduct of employees, agents, subcontractors, suppliers, business partners or joint ventures in which Xtend participates, including the impact on Xtend’s reputation and its ability to do business; cyber and other security threats or disruptions faced by Xtend and JFB, its customers or its suppliers and other partners, and changes in related regulations; and Xtend’s ability to innovate, develop new products and technologies, progress and benefit from digital transformation and maintain technologies to meet the needs of Xtend’s customers. In addition, a number of important factors could cause JFB’s, Xtend’s or NewCo’s actual future results and other future circumstances to differ materially from those expressed in any forward-looking statements, including but not limited to those important factors that will be discussed in the section entitled “Risk Factors” in the registration statement on Form S-4 filed by JFB and NewCo, as any such factors may be updated from time to time in other filings with the Securities and Exchange Commission (the “SEC”), including without limitation Xtend’s investor relations site at https://www.xtend.me/newsroom and JFB’s investor relations site at https://investors.jfbconstruction.net/ . Forward-looking statements speak only as of the date they are made and, except as may be required under applicable law, neither Xtend nor JFB undertakes any obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise. Important Information for Investors and Stockholders This communication is for informational purposes only and is not intended to, and does not, constitute an offer to sell or the solicitation of an offer to buy any securities or a solicitation of any vote or approval, nor shall there be any issuance or sale of securities in any jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such jurisdiction. No offer of securities shall be made except by means of a prospectus meeting the requirements of Section 10 of the Securities Act. In connection with the transaction, NewCo and JFB filed a registration statement on Form S-4, which will include an information statement of JFB and a preliminary prospectus of NewCo. After the registration statement is declared effective, JFB will mail to its stockholders a definitive information statement that will form part of the registration statement. This communication is not a substitute for the information statement/prospectus or registration statement or for any other document that JFB filed and may file with the SEC and send to its stockholders in connection with the transaction. INVESTORS AND SECURITY HOLDERS OF XTEND AND JFB ARE URGED TO READ THE INFORMATION STATEMENT/PROSPECTUS OR REGISTRATION STATEMENT AND ANY OTHER DOCUMENT THAT WILL BE FILED WITH THE SEC CAREFULLY AND IN THEIR ENTIRETY WHEN THEY BECOME AVAILABLE BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION. Investors and security holders will be able to obtain free copies of the information statement/prospectus (when available) and other documents filed with the SEC by JFB through the website maintained by the SEC at http://www.sec.gov . Copies of the documents filed with the SEC by JFB will be available free of charge on JFB’s website at https://investors.jfbconstruction.net/ . JFB Construction Holdings Contact: CORE IR Mike Mason 516 222 2560 investors@jfbconstruction.net XTEND Contact: Headline Media Sarah Small 929 255 1449 sarah@headline.media XTEND Investor Relations: MZ North America Shannon Devine XTEND@mzgroup.us 203-741-8811