BITTERROOT RESOURCES’ UPDATE ON THE LM NICKEL-COPPER PROJECT, MICHIGAN Bitterroot Resources Ltd.’s (symbol BTT, TSX Venture Exchange) Michigan subsidiary Trans Superior Resources, Inc., together with several investors, have

BITTERROOT RESOURCES LTD.

PO Box 91878,

West Vancouver, BC, V7V 4S4

tel 604 922 1351

www.bitterrootresources.com

NEWS RELEASE

August 11, 2026

BITTERROOT RESOURCES’ UPDATE ON THE

LM NICKEL-COPPER PROJECT, MICHIGAN

Bitterroot Resources Ltd.’s (symbol BTT, TSX Venture Exchange) Michigan

subsidiary Trans Superior Resources, Inc., together with several investors, have

purchased the surface estate on the strategically-located LM nickel-copper property in the

Upper Peninsula of Michigan. This purchase gives Bitterroot and its minority joint

venture partner Below Exploration Inc. control of the LM Property for mineral

exploration and development, plus a valuable hardwood timber resource.

Trans Superior owns 20% of the new LM Property surface owner, Ravine River

Properties LLC, with the remainder held by four Michigan-based investors whose

interests are similarly aligned, through their equity interests in Bitterroot and/or Below

Exploration. The purchase price was US$170,000.

In addition, Trans Superior has received a three-year access/road use permit from a local

timber company, which will simplify drill access to the east half of the LM Property. In

June, Talon Metals Corp. resumed drilling its Roland target, approximately 120 metres

east of the LM Property. In late July, Perseverance Metals Inc. initiated its first drilling

program on the nearby Voyageur Lands, under option/earn-in from Bitterroot and partner

Altius Minerals Corporation. Also in July, as part of the Defence Production Act Title III

environmental review process, Trans Superior completed a contractor-led archaeological

survey on the 40-acre LM Property and the nearby 80-acre MPC lease. No archaeological

resources were identified. Follow-up government-led consultation is underway.

The LM Project is within the Baraga Basin, which hosts the only nickel mine in the USA,

Talon’s Eagle Mine. The Baraga Basin is highly prospective for discovery of additional

high-grade, magmatic conduit-hosted nickel-copper deposits. The LM and Roland targets

are believed to be parts of the same magmatic conduit system. Previous drilling by

Bitterroot and Below on the LM Property (7,565 metres in 26 core holes, to a depth of

300 metres) has defined a magma conduit that hosts disseminated, semi-massive and/or

massive sulphide nickel-copper PGM mineralization of high metal tenor in 10 of 26

holes. Drill intervals and photographs of the mineralization are available at

www.bitterrootresources.com. The most prospective and untested part of the LM

intrusion is in the 400-700 metres depth range, which will be drill-tested, subject to

financing.

Michael Carr, CEO of Bitterroot commented; “The relatively low-cost acquisition of the

LM Property’s surface estate increases our operational flexibility and extends our

drilling season. As we pursue various sources of funding for drilling at LM, we see

concurrent potential benefits from Perseverance and Talon’s drilling in 2026 and

beyond”.

Mr. Jeff Rowe, P.Geo, is the Qualified Person responsible for the technical content of this

disclosure.

ON BEHALF OF THE BOARD OF DIRECTORS

Michael S. Carr

CEO and Director

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economic, market and business conditi ons, regulatory processes and actions, technical issues, new

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occurrence of unexpected events and the company’s ability to execute and implement its future plans. Actual

events may differ materially from those projected in t he forward -looking statements. When relying on

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looking statements within the meaning of the Private Securities Legislation Reform Act of 1995.