Mr. Galen McNamara reports

MANHATTAN URANIUM DISCOVERY CORP. ADVANCES U.S. PRESENCE WITH OTCQB UPLISTING UNDER SYMBOL "MAUUF"

Effective at the market open on Monday, June 22, Manhattan Uranium Discovery Corp.'s common shares will commence trading on the OTCQB Venture Market in the United States, under the symbol MAUUF. The company's common shares will continue to trade on the TSX Venture Exchange under the symbol MANU and on the Frankfurt Stock Exchange under the symbol J5B0.

"With the majority of Manhattan Uranium's project portfolio situated in the United States, gaining direct access to U.S. investors through the OTCQB was a clear and immediate priority," said Galen McNamara, chief executive officer of Manhattan. "The OTCQB provides American investors with a familiar and accessible way to participate in our story as we advance our portfolio toward key catalysts. We look forward to continuing to build our U.S. shareholder base as we execute on our near-term objectives."

The OTCQB Venture Market serves as a leading U.S. trading platform for early-stage and developing companies. The listing is expected to strengthen Manhattan Uranium's profile with U.S.-based investors, broaden the company's shareholder base and enhance trading liquidity.

Marketing service agreements

Manhattan announces that it has entered into an on-line marketing agreement dated June 18, 2026, with i2i Marketing Group LLC, a digital marketing agency headquartered in Key West, Fla., United States. Pursuant to the i2i agreement, i2i will provide Manhattan with corporate marketing and investor awareness services, including but not limited to, content creation and management, author sourcing, project management, and media distribution.

Manhattan has agreed to pay i2i a creation and media fee of $250,000 (U.S.) upon and subject to receipt of TSX-V acceptance of the i2i agreement. The term of the i2i agreement is six months following TSX-V acceptance.

The i2i fee will be paid by Manhattan to i2i in cash in advance of i2i commencing its services. Manhattan will not issue any securities to i2i as compensation for its services. i2i and its principal, Joseph Grubb, are at arm's length to Manhattan and, to the knowledge of Manhattan, do not beneficially own, directly or indirectly, any securities of Manhattan. i2i is not engaged in market-making activities.

Manhattan announces that it has entered into an investor relations advisory services agreement dated June 18, 2026, with Vectis Capital Inc., an investor relations advisory firm headquartered in Windsor, Ont. Pursuant to the Vectis agreement, Vectis will provide investor relations advisory services to Manhattan, including, but not limited to, increasing exposure through private trading groups, social media and influencer communities, and implementing tagged article awareness strategies.

Manhattan has agreed to pay a fee of $150,000 (U.S.) upon and subject to receipt of TSX-V acceptance. The term of the Vectis agreement is three months following TSX-V acceptance.

The Vectis fee will be paid by Manhattan to Vectis in cash in advance of Vectis commencing its services. Manhattan will not issue any securities to Vectis as compensation for its services. Vectis and its principal, Tyler Troup, are at arm's length to Manhattan and, to the knowledge of Manhattan, do not beneficially own, directly or indirectly, any securities of Manhattan. Vectis is not engaged in market-making activities.

About Manhattan Uranium Discovery Corp.

Manhattan Uranium Discovery is a newly consolidated North American uranium company committed to the discovery, development and advancement of high-quality uranium assets. Following the successful acquisitions of Urano Energy and Pegasus Resources, Manhattan now holds a premier portfolio of 15 past-producing uranium mines across 25 underexplored properties covering 25,099 acres in the United States, complemented by high-grade exploration potential in Canada's Athabasca basin.

Backed by an elite technical and management team with decades of uranium discovery, project advancement and capital markets experience, Manhattan is strategically positioned to capitalize on the growing demand for domestic uranium and the American nuclear renaissance.

We seek Safe Harbor.