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IP Survey on Mystery Property Outlines Porphyry Targets

Corporate Updates

IP Survey on Mystery Property Outlines

Porphyry Targets

Vancouver, British Columbia--(Newsfile Corp. - July 13, 2026) - Rokmaster Resources Corp. (TSXV:

RKR) (OTCQB: RKMSF) (FSE: 1RR1) ("Rokmaster" or "the Company") is pleased to provide an update

on exploration activities on the Mystery Property.

In June, SJ Geophysics completed an Induced Polarization Survey ("IP Survey") over several porphyry

Cu-(Mo±Au) targets on the Mystery Property. The IP Survey was a pole-dipole active array capable of

investigating chargeability and resistivity down to depths of 300-500 m with the purpose of refining

targets planned for drill testing during the fall.

(Figure 2)

.

The southern IP Survey profile, Line 1000, was completed over the B2 and B3 zones. This area features

limited outcrop exposures of strongly potassic-altered andesite hosting a dense stockwork of pyrite-

chalcopyrite-biotite-magnetite veinlets which have returned elevated copper, molybdenum, and gold in

rock sample assays. The IP response shows a strong high chargeability anomaly cored by a strong high

resistivity anomaly below and southeast of the B2 Zone

(Figure 3)

.

Approximately 2.5 km to the northeast, IP Line 2000 investigated a coincident soil and magnetic

anomaly in the northern portion of the Ford Anomaly area. This area is underlain by rhyolite belonging to

the Kasalka Group which displays strong phyllic alteration over a broad area including intense sericite

replacement and disseminated pyrite. Hyperspectral work completed in the previous years indicates that

higher-temperature paragonite occurs below a certain elevation in the Ford Anomaly area indicating

good potential remains at depth. IP Line 2000 outlined a large and broad high chargeability anomaly

~200 m below the western portion of the profile, and a deeper highly resistive feature on the eastern end

of the profile

(Figure 4)

.

Another ~1.1 km to the north of the Ford Anomaly, IP Line 3000 tested an area of stockwork quartz

veining in sericite- and potassic-altered porphyritic monzonite. This area was discovered last year and

Re-Os age dating on the molybdenite mineralization confirmed that it belongs to the productive late

Cretaceous Bulkley Intrusive Suite which is related to porphyry systems in the region such as the

Huckleberry, Ox, Seel, and Poplar Deposits. IP Line 3000 shows a west-dipping coincident high

chargeability and high resistivity anomaly which comes to surface near where the molybdenite

mineralization outcrops. Possibly related to line 2000, there is also a deeper highly resistive feature in

the eastern portion of the Line 3000 profile

(Figure 5)

.

Diamond drilling of several of these targets, now refined at depth with the IP Survey, is being planned for

September-October 2026. The Mystery Property holds an active three-year exploration permit and

Rokmaster is fully funded to complete the drilling as planned.

John Mirko, President and CEO, comments:

"The IP Survey will certainly improve the efficiency of the planned drilling with the specific drill targets

now resolved at depth. The Mystery Property and the region in general does not offer much outcrop

exposure so we are fortunate to have discovered several occurrences of significant porphyry-style

alteration and mineralization. Now the IP Survey has detected multiple very encouraging features at

the drill targeting scale. The whole team is thrilled with these results, especially on line 1000, and is

excited to get a drill turning on them later this year."

Nechako Project

The Mystery Property is a part of the Company's Nechako Project, which totals 28,238 hectares (282

km

2

) across four properties located in west-central British Columbia. The Nechako Project features

multiple exploration targets for significant porphyry Cu-(Mo±Au) mineralization and high-grade Au-Ag

vein systems in the southern portion of the productive Stikine terrane

(Figure 1)

. Rokmaster has nurtured

the Nechako Project for several years, efficiently vectoring towards robust drill targets on the properties,

three of which hold active exploration drill permits.

The technical information in this news release has been prepared in accordance with Canadian

regulatory requirements as set out in National Instrument 43-101 and reviewed and approved by Ross

Polutnik, P.Geo., who is independent of Rokmaster and was involved in the survey data collection and

geophysical inversions shown in figures 3,4, and 5.

For more information please contact

Mr. John Mirko, President & CEO of Rokmaster Resources Corp.,

[email protected]

, Ph. +1 (604)

290-4647 or by website:

www.rokmaster.com

On Behalf of the Board of Directors of

Rokmaster Resources Corp.

John Mirko,

President & Chief Executive Officer.

Neither TSX Venture Exchange nor its Regulation Services Provider (as that term in defined in the

policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this

press release.

CAUTIONARY NOTE REGARDING FORWARD-LOOKING STATEMENTS: This news release may

contain forward-looking information within the meaning of applicable securities laws ("forward-looking

statements"). Forward-looking statements are statements that are not historical facts and are generally,

but not always, identified by the words "expects," "plans," "anticipates," "believes," "intends,"

"estimates," 'projects," "potential" and similar expressions, or that events or conditions "will," "would,"

"may," "could" or "should" occur. These forward-looking statements are subject to a variety of risks and

uncertainties which could cause actual events or results to differ materially from those reflected in the

forward-looking statements, including, without limitation: receipt of regulatory approval with respect to the

Hanson Property transaction; risks related to fluctuations in metal prices; uncertainties related to raising

sufficient financing to fund the planned work in a timely manner and on acceptable terms; changes in

planned work resulting from weather, logistical, technical or other factors; the possibility that results of

work will not fulfill expectations and realize the perceived potential of the Company's properties; risk of

accidents, equipment breakdowns and labour disputes or other unanticipated difficulties or interruptions;

the possibility of cost overruns or unanticipated expenses in the work program; the risk of environmental

contamination or damage resulting from Rokmaster's operations and other risks and uncertainties. Any

forward-looking statement speaks only as of the date it is made and, except as may be required by

applicable securities laws, the Company disclaims any intent or obligation to update any forward-looking

statement, whether as a result of new information, future events or results or otherwise.

To view the source version of this press release, please visit

https://www.newsfilecorp.com/release/304897