<img src="https://ml.globenewswire.com/Resource/Download/3f990444-bc34-44ad-b41a-1402315b14f2?size=2" nborder="0" align="left" hspace="5" vspace="5" title="rich.png" alt="Richardson Electronics, Ltd."/>Presentation on Wednesday, August 26 at 3:00 P.M. ET / 2:00 P.M. CTLAFOX, Ill., Aug. 12, 2026 <a href="https://www.globenewswire.com" target="_blank">(GLOBE NEWSWIRE)</a> -- <a href="https://www.globenewswire.com/Tracker?data=we_u-Nwfylihlx62VG-qSSpLjgDxL4hRZtPdZ-n0TwBhTw54QAIQE2lcwoqdKcUJvTm-p_bnubLPsWz90kRlZZ2gcimaptE7VKWclAF_uzs=" rel="nofollow" target="_blank" title="Richardson Electronics, Ltd.">Richardson Electronics, Ltd.</a> (NASDAQ: RELL), a global provider of engineered solutions for the green energy, power management, and custom display markets, today announced that it will be presenting and hosting one-on-one meetings at the Midwest IDEAS Investor Conference being held at The InterContinental Chicago Magnificent Mile on August 26, 2026. Edward J. Richardson, Chairman and CEO, and Wendy Diddell, COO of Richardson Electronics, Ltd., will be giving a formal presentation in Room #3 and answering questions from investors on Wednesday, August 26 at 3:00 P.M. ET / 2:00 P.M. CT. The presentation is a webcast and can be accessed through the conference host’s main website: <a href="https://www.globenewswire.com/Tracker?data=3QOEeZxPOoigsRUMnD0Warv_a0qMbhrrKROJny2io4b4gwGWeKFjASOKUfkOFE6VqzlI6qLm2HgBQkliFarSyAAqleYnaTLSTdh_jX5Kdw4MetncKDYOW6cy8Vgp--R-xltYvMctgxakr9_q6ZVzWg==" rel="nofollow" target="_blank" title="">https://www.threepartadvisors.com/midwest</a> and in the investor relations section of the Company's website: <a href="https://www.globenewswire.com/Tracker?data=lIFRZP0hzrocP894-dwBsYT0WBarFVyjNbiXSGe14Y6SOjiVqTXWG39lst5tn6etcYA_QlKGrdVrsaZs_rVKkA==" rel="nofollow" target="_blank" title="www.rell.com">www.rell.com</a>, following the presentation. If interested in scheduling a 1x1 session or learning more about the IDEAS conferences, please contact Lacey Wesley at (817) 769 -2373 or <a href="https://www.globenewswire.com/Tracker?data=t5Y1PYPkcNpye44Rwv6Dq8VeIq_ugGBEo-UYtPACro4lT8WFwn68BBTvCgf3HnB507yd_MzBYZ121-hrnnpGDymWkZ0cIiVLu6WjmglpSV-odZMWYg1xYHr2E6xvDdtT" rel="nofollow" target="_blank" title="lWesley@IDEASconferences.com">lWesley@IDEASconferences.com</a>. About Richardson Electronics, Ltd. Richardson Electronics, Ltd. is a leading global manufacturer of engineered solutions, green energy products, power grid and microwave tubes, and related consumables; power conversion and RF and microwave components including green energy solutions; tubes for diagnostic imaging equipment; and customized display solutions. More than 55% of our products are manufactured in LaFox, Illinois, Marlborough, Massachusetts, or Donaueschingen, Germany, or by one of our manufacturing partners throughout the world. All our partners manufacture to our strict specifications and per our Supplier Code of Conduct. We serve customers in alternative energy, healthcare, aviation, broadcast, communications, industrial, marine, medical, military, scientific, and semiconductor markets. The Company’s strategy is to provide specialized technical expertise and “engineered solutions” based on our core engineering and manufacturing capabilities. The Company provides solutions and adds value through design-in support, systems integration, prototype design and manufacturing, testing, logistics, and aftermarket technical service and repair through its global infrastructure. More information is available at <a href="https://www.globenewswire.com/Tracker?data=lIFRZP0hzrocP894-dwBsbe_H7mQXWajac_nXx6UCKam_ziH8pb6wCVmk8koUU2Y8oSu4fG1Oo24CpREc8rt5Q==" rel="nofollow" target="_blank" title="www.rell.com">www.rell.com</a>. Richardson Electronics’ common stock trades on the NASDAQ Global Select Market under the ticker symbol RELL. About IDEAS Investor Conferences The mission of the IDEAS Conferences is to provide independent regional venues for quality companies to present their investment merits to an influential audience of investment professionals. Unlike traditional bank-sponsored events, IDEAS Investor Conferences are “SPONSORED BY INVESTORS. FOR INVESTORS.” and for the benefit of regional investment communities. Conference sponsors collectively have more than $200 billion in assets under management and include: 1102 Partners, Adirondack Research and Management, Allianz Global Investors: NFJ Investment Group, Aristotle Capital Boston, Ascend Wealth Advisors, Barrow Hanley Mewhinney &amp; Strauss, Constitution Research &amp; Management, Inc., Diamond Hill, First Wilshire Securities Management, Inc., Granahan Investment Management, Great Lakes Advisors, Greenbrier Partners Capital Management, LLC, Hodges Capital Management, Ironwood Investment Management, Keeley Teton Advisors, Luther King Capital Management, Marble Harbor Investment Counsel, North Star Investment Management, Punch &amp; Associates, Shepherd Kaplan Krochuk, Westwood Holdings Group, Inc., and William Harris Investors. The IDEAS Investor Conferences are held annually and are produced by Three Part Advisors, LLC. Additional information about the events can be located at <a href="https://www.globenewswire.com/Tracker?data=IrZ9HkvfdqJBKPTaDZFbiNlAI8HTeOwlNzFrrjHv9w3pjvB3DlyQQMdsG7vKgE8iErbqMGa5NqFfP19p7nFC36abYtrtUQ2--oifU2tzpQs2hHBVcrv_uDuhQE3bnqf3" rel="nofollow" target="_blank" title="www.IDEASconferences.com">www.IDEASconferences.com</a>. Forward-Looking Statements This release includes certain “forward-looking” statements as defined by the Securities and Exchange Commission. Statements in this press release regarding the Company’s business that are not historical facts represent “forward-looking” statements that involve risks and uncertainties. For a discussion of such risks and uncertainties, which could cause actual results to differ from those contained in the forward-looking statements, see Item 1A, “Risk Factors” in the Company’s Annual Report on Form 10-K filed on August 3, 2026, and other reports we file with the Securities and Exchange Commission. The Company assumes no responsibility to update the “forward-looking” statements in this release as a result of new information, future events or otherwise. Contact Information: Wendy Diddell Chief Operating Officer Richardson Electronics, Ltd. 630.208.2323 | <a href="https://www.globenewswire.com/Tracker?data=_dZ6fV1G4RG0TrcMuSXlxKhEPvi7wgDHv6LhDZgWg2YLxCXXeU2BqfYqvdHHpEL8Izs5YwIsrM1Yowu6LqFtJcEKgzBVODfkThwOPVivEt8=" rel="nofollow" target="_blank" title="wdiddell@rell.com">wdiddell@rell.com</a> | <a href="https://www.globenewswire.com/Tracker?data=Ln-QoizcTWJVB6C92D2OyVNcScjyM0JcI-SoOaQuOLOGjYUKGdt3P0XRUGwc5ZQXTsg1ODflwY1zp-_SZRKckQ==" rel="nofollow" target="_blank" title="rell.com">rell.com</a> <img alt="" src='https://ml.globenewswire.com/media/NTFkY2I4OTQtODExZi00ODkxLTljNWUtOWU5NWZmNTUxMGJiLTEwMzc1NzYtMjAyNi0wOC0xMi1lbg==/tiny/Richardson-Electronics-Ltd-.png' referrerpolicy='no-referrer-when-downgrade' />

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Richardson Electronics to Present at the 17th Annual Midwest IDEAS Investor Conference on August 26th

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