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ITR.V ·

Integra Provides Corporate Update

Corporate Updates

1050 – 400 Burrard Street

Vancouver, British Columbia, Canada

V6C 3A6

Email: [email protected]

FOR IMMEDIATE RELEASE TSXV: ITR; NYSE American: ITRG

May 10, 2023 www.integraresources.com

INTEGRA PROVIDES CORPORATE UPDATE

Vancouver, British Columbia – Integra Resources Corp. (“Integra” or the “Company”) (TSXV: ITR; NYSE

American: ITRG) is pleased to provide an update on work programs and upcoming catalysts at its flagship

assets located in the Great Basin, USA , as well a corporate update with respect to the proposed share

consolidation. Integra is focused on achieving several key milestones in 2023 , including an updated

mineral resource estimate and the submission of the Mine Plan of Operations (“MPO”) at the DeLamar

Project located in southwestern Idaho, as well as an updated mineral resource estimate and Preliminary

Economic Study (“PEA”) at the Wildcat & Mountain View Projects, located in western Nevada.

The Company is pleased to host a corporate update webinar on Tuesday, May 16, 2023 at 8:00am

PST/11:00am EST. The webinar will feature a presentation from Integra’s President, CEO and Director ,

Jason Kosec, as well as a live Q&A session. A recording of the webinar will be available on Integra’s

corporate website. To register for the webinar, please use the following link:

https://us02web.zoom.us/webinar/register/WN_L5osfCkPQ66qZw9ZsB-O8w

Project Update:

DeLamar Project

• Integra recently completed a highly successful stockpile drilling program at DeLamar in April 2023.

The program consisted of 321 holes, totalling 12,588 meters (“m”). Results from 9,089 m,

representing 247 drill holes, have yet to be released. The Company will continue to release results

from the stockpile drilling program as they are received from the lab.

o Highlights from the drilling program include (refer to March 2023 press releases, gold

equivalent (“AuEq”) = g/t gold (“Au”) + g/t silver (“Ag”) ÷ 77.7):

▪ 76 m of 0.74 g/t AuEq (0.62 g/t Au and 9.54 g/t Ag)

▪ 111 m of 0.59 AuEq (0.27 g/t Au and 24.60 g/t Ag)

▪ 50 m of 0.67 g/t AuEq (0.34 g/t Au and 25.29 g/t Ag)

• Integra intends to release an update d mineral resource estimate for DeLamar in Q2 2023,

incorporating results from the stockpile drill ing program as well as additional drilling that was

completed after the cut-off date for the previous mineral resource estimate.

• The Company expects to submit the MPO for DeLamar to the United States Bureau of Land

Management (“BLM”) in Q4 2023. The submission of the MPO represents a significant milestone

in the National Environmental Policy Act (“NEPA”) permitting process. Additional commentary on

Integra’s permitting efforts and achievements at DeLamar is provided below.

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Wildcat & Mountain View Projects

• The Wildcat & Mountain View Projects, located in western Nevada, were acquired by Integra as

part of the recently completed merger with Millennial Precious Metals Corp. ("Millennial").

• The Company is currently preparing an updated mineral resource estimate to incorporate

Millennial’s 2021-2022 drill program of 1,250 m at Wildcat and 7,200 m at Mountain View.

o Given the positive resource conversion results seen by the Company to date, it is

expected that there will be significant conversion of resources from the Inferred

category to the Indicated category in the upcoming resource estimate.

• Highlights from the 2021-2022 drilling program at Wildcat & Mountain View include (refer to

2022 Millennial press releases):

o Wildcat: 39.2 m of 1.26 g/t oxide Au, 41.4 m of 0.93 g/t oxide Au, and 120.2 m of 0.39

g/t oxide Au

o Mountain View: 185.5 m of 1.48 g/t oxide Au, 128.3 m of 1.73 g/t oxide Au, and 232.5 m

of 0.91 g/t oxide Au

• Material from drilling at Wildcat and Mountain View was used for metallurgical testing,

including 22 column leach tests and 186 bottle roll variability tests performed at McClelland

Laboratories of Reno, Nevada. All metallurgical test work is now complete and results have met

or exceeded the Company’s expectations.

• Final mining and engineering studies are underway to support the combined maiden PEA for

Wildcat & Mountain View, expected to be released in late Q2 2023.

• Integra intends to initiate a resource expansion drill program at Wildcat in H2 2023 to test

potential extensions of the oxide resource and demonstrate growth potential in previously un-

explored areas surrounding the proposed main pit.

• An Exploration Plan of Operations (“EPO”) was submitted to the BLM for both Wildcat and

Mountain View in late 2022 and early 2023 respectively. The Company is working closely with

the BLM to obtain the authorizations for expanded exploration programs in the future.

o The EPO will allow for significantly increased flexibility (400 acres of surface disturbance

vs. 5 acres of surface disturbance permitted under the current Notice of Operations) for

future exploration, geotechnical and metallurgical drilling to support resource growth

and future economic studies at Wildcat and Mountain View.

President, CEO & Director, Jason Kosec, stated, “following the transformational merger with Millennial

Precious Metals, Integra now controls one of the largest precious metal resource endowments in the

Western USA. Our vision is to be come the next mid -tier producer in the Great Basin and 2023 will be

pivotal in achieving that goal. In addition to the maiden PEA for Wildcat and Mountain View and three

updated resource estimates, the Company plans to submit the Mine Plan of Operations for DeLamar. The

team continues to work aggressively to unlock the full potential of these projects and continue to de-risk

them through advanced metallurgy, engineering, geological and environmental baseline studies, in

addition to conducting exploration focused on oxide growth.”

Executive Chairman, George Salamis, added, “Integra is committed to pursuing responsible mining

development in the United States and this is reflected in our approach to de -risking and developing our

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key projects in Idaho and Nevada. Extensive baseline work has been underway at DeLamar for over three

years, studying everything from wildlife and vegetation to air and water quality and soils. The permitting

team has done a n excellent job and we look forward to applying the same level of dedication to the

environmental baseline, stakeholder engagement , and project development work underway at Wildcat

and Mountain View.”

DeLamar Permitting Update

Integra is currently in its third and potential final year of baseline study data collection for the upcoming

NEPA process subsequent to the submittal to the BLM as part of the MPO in Q4 2023. To date, Integra has

established 38 surface water monitoring locations and 34 historic and new groundwater wells have been

sampled quarterly since 2021, resulting in over 8 quarters of site-specific data. Baseline studies have been

initiated for Wetlands, Seeps and Springs, Aquatic Resources, Air Quality, Wildlife, Vegetation, Soils,

Cultural Resources, and Geochemistry in addition to Surface Water and Groundwater. To date, no

federally listed threatened or endangered species have been identified in the proposed project area.

Integra has also entered into a cost recovery agreement with the BLM and initiated Agency and Tribal

coordination to provide input on baseline studies to identify potential issues and alternatives in advance

of the NEPA. In addition, Integra has worked with the BLM to select a third-party consultant to assist the

BLM in the process of baseline plans of study review and approval, baseline data collection, and

subsequent baseline technical report review in an effort to reduce the need for baseline data gap analysis

and the risk of new issues or concerns arising during the scoping process.

Share Consolidation

Subject to the receipt of approval from the TSXV and NYSE American, Integra intends to consolidate its

common shares (“Integra Shares”) on the basis of one post-consolidation Integra Share for every 2.5 pre-

consolidation Integra Shares (the “Consolidation” ). The Consolidation is currently expected to be

implemented on or about May 22, 2023.

As a result of the Consolidation, Integra Shares issuable pursuant to Integra’s convertible securities will

be proportionally adjusted on the same basis. No fractional share of Integra will be issued, and any

fractional interest in Integra shares resulting from the Consolidation will be rounded to the nearest whole

Integra share.

A letter of transmittal will be mailed to registered shareholders once the Consolidation h as taken effect,

which will contain instructions on how registered shareholders can exchange their share certificates or

direct registration system advices (“DRS Advices”), evidencing their pre -Consolidation Integra Shares for

new share certificates or DRS Advices representing the number of post -Consolidation Integra Shares to

which they are entitled.

DeLamar Project Overview:

The past producing DeLamar Project, which includes the adjacent DeLamar and Florida Mountain gold and

silver deposits, is located in Owyhee County in southwest Idaho. Since acquiring the Project in 2017, t he

Company has demonstrated significant resource growth and conversion while providing robust economic

studies in its maiden preliminary economic assessment and Pre-Feasibility Study (“PFS”). An independent

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technical report for the PFS on the DeLamar Project has been prepared in accordance with the

requirements of NI 43-101 and is available under the Company’s profile at www.sedar.com.

Wildcat Project Overview:

Wildcat is located within the Farrell mining district in Nevada, 56km north of the town of Lovelock within

Pershing County. The property can be accessed by year -round roads from Lovelock via State Route 399

and Seven Troughs Road. The 17,612-acre land package consists of 916 unpatented claims and 4 patented

claims. The claims are located on publicly -owned lands administered by the BLM. The mineralization at

Wildcat consists of a gold -dominated, low sulphidation, epithermal vein system with oxidized,

disseminated sulphide mineralization hosted in volcanic and intrusive rocks. The Inferred mineral resource

estimate at Wildcat contains 776,000 ounces of Au (oxide) (60.8 million tonnes at 0.40 g/t Au; effective

date of November 18, 2020). A technical report for the Wildcat Project is available on the Millennial

Precious Metals Corp. issuer profile on SEDAR at www.sedar.com.

Mountain View Project Overview:

Mountain View is located within the Deep Hole mining district in Nevada, 24km north of the town of

Gerlach within Washoe County. The project area is covered by a 5,476-acre land package consisting of 282

unpatented claims, located on publicly -owned lands administered by the BLM. Gold -dominated

mineralization at Mountain View consists of low sulphidation epitherma l veins and disseminated oxide

and sulphide mineralization hosted in Cenozoic volcanic rocks. Mountain View has an Inferred mineral

resource estimate containing 427,000 ounces of Au (oxide) (23.2 million tonnes at 0.57 g/t Au; effective

date of November 15 , 2020). A technical report for the Mountain View Project is available on the

Millennial Precious Metals Corp. issuer profile on SEDAR at www.sedar.com .

About Integra Resources Corp.

Integra Resources Corp is one of the largest precious metals exploration and development companies in

the Great Basin of the Western USA. Integra is currently focused on advancing its three flagship oxide

heap leach projects: the past producing DeLamar Project located in southwestern Idaho and the Wildcat

and Mountain View Projects located in western Nevada. The Company also holds a portfolio of highly

prospective early-stage exploration projects in Idaho, Nevada and Arizona. Integra’s long-term vision is

to become a leading USA focused mid-tier gold and silver producer.

Qualified Person

The scientific and technical information contained in this news release has been reviewed and approved

by Raphael Dutaut, Ph.D (P.Geo), Integra’s Vice President, Exploration and Tim Arnold (PE, SME), Integra’s

Chief Operating Officer. Both individuals are “Qualified Persons” (“QP”) as defined in National Instrument

43- 101 – Standards of Disclosure for Mineral Projects.

ON BEHALF OF THE BOARD OF DIRECTORS

Jason Kosec

President, CEO and Director

CONTACT INFORMATION

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Corporate Inquiries: [email protected]

Company website: www.integraresources.com

Office phone: 1 (604) 416-0576

Forward Looking and Other Cautionary Statements

Certain information set forth in this news release contains “forwar d‐looking statements” and “forward‐

looking information” within the meaning of applicable Canadian securities legislation and applicable

United States securities laws (referred to herein as forward‐looking statements). Except for statements of

historical fa ct, certain information contained herein constitutes forward‐looking statements which

includes, but is not limited to, statements with respect to: the potential benefits to be derived from the

recently completed merger with Millennial, including, but not limited to, the goals, synergies, strategies,

opportunities, profile, mineral resources and potential production, project timelines, prospective

shareholding, integration and comparables to other transactions; the Consolidation; the future financial

or operating performance of the Company and the Company’s mineral properties and project portfolio;

Integra’s intended use of the net proceeds from the sale of subscription receipts; the results from work

performed to date; the estimation of mineral resources and reserves; the realization of mineral resource

and reserve estimates; the development, operational and economic results of technical reports on mineral

properties referenced herein; magnitude or quality of mineral deposits; the anticipated advancement of

the Company’ mineral properties and project portfolios; exploration expenditures, costs and timing of the

development of new deposits; underground exploration potential; costs and timing of future exploration;

the completion and timing of future development studies; estimates of metallurgical recovery rates;

exploration prospects of mineral properties; requirements for additional capital; the future price of

metals; government regulation of mining operations; environmental risks; the timing and possible

outcome of pending regulatory matters; the realization of the expected economics of mineral properties;

future growth potential of mineral properties; and future development plans.

Forward-looking statements are often identified by the use of words such as “m ay”, “will”, “could”,

“would”, “anticipate”, “believe”, “expect”, “intend”, “potential”, “estimate”, “budget”, “scheduled”,

“plans”, “planned”, “forecasts”, “goals” and similar expressions. Forward -looking statements are based

on a number of factors and as sumptions made by management and considered reasonable at the time

such information is provided. Assumptions and factors include: the integration of the Companies, and

realization of benefits therefrom; the Companies’ ability to complete its planned explor ation programs;

the Consolidation; the absence of adverse conditions at mineral properties; no unforeseen operational

delays; no material delays in obtaining necessary permits; the price of gold remaining at levels that render

mineral properties economic; the Companies’ ability to continue raising necessary capital to finance

operations; and the ability to realize on the mineral resource and reserve estimates. Forward‐looking

statements necessarily involve known and unknown risks and uncertainties, which ma y cause actual

performance and financial results in future periods to differ materially from any projections of future

performance or result expressed or implied by such forward‐looking statements. These risks and

uncertainties include, but are not limited to: integration risks; general business, economic and competitive

uncertainties; the actual results of current and future exploration activities; conclusions of economic

evaluations; meeting various expected cost estimates; benefits of certain technology usage; changes in

project parameters and/or economic assessments as plans continue to be refined; future prices of metals;

possible variations of mineral grade or recovery rates; the risk that actual costs may exceed estimated

costs; geological, mining and exploration technical problems; failure of plant, equipment or processes to

operate as anticipated; accidents, labour disputes and other risks of the mining industry; delays in

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obtaining governmental approvals or financing; the speculative nature of miner al exploration and

development (including the risks of obtaining necessary licenses, permits and approvals from government

authorities); title to properties; the impact of COVID -19 on the timing of exploration and development

work and management’s ability to anticipate and manage the foregoing factors and risks. Although the

Companies have attempted to identify important factors that could cause actual actions, events or results

to differ materially from those described in the forward -looking statements, there may be other factors

that cause actions, events or results not to be as anticipated, estimated or intended. Readers are advised

to study and consider risk factors disclosed in Integra’s annual report on Form 20-F dated March 17, 2023

for the fiscal year ended December 31, 2022, and Millennial’s management’s discussion and analysis dated

April 28, 2023 for the fiscal year ended December 31, 2022.

There can be no assurance that forward‐looking statements will prove to be accurate, as actual results

and fu ture events could differ materially from those anticipated in such statements. The Compan y

undertakes no obligation to update forward‐looking statements if circumstances or management’s

estimates or opinions should change except as required by applicable securities laws. The forward-looking

statements contained herein are presented for the purposes of ass isting investors in understanding the

Company’s plans, objectives and goals, and may not be appropriate for other purposes. Forward-looking

statements are not guarantees of future performance and the reader is cautioned not to place undue

reliance on forwa rd‐looking statements. This news release also contains or references certain market,

industry and peer group data, which is based upon information from independent industry publications,

market research, analyst reports, surveys, continuous disclosure fili ngs and other publicly available

sources. Although the Company believes these sources to be generally reliable, such information is subject

to interpretation and cannot be verified with complete certainty due to limits on the availability and

reliability of raw data, the voluntary nature of the data gathering process and other inherent limitations

and uncertainties. The Company has not independently verified any of the data from third party sources

referred to in this news release and accordingly, the accur acy and completeness of such data is not

guaranteed.

Cautionary Note for U.S. Investors Concerning Mineral Resources and Reserves

NI 43-101 is a rule of the Canadian Securities Administrators which establishes standards for all public

disclosure an issuer makes of scientific and technical information concerning mineral projects. Technical

disclosure contained in this news release has been prepared in accordance with NI 43 -101 and the

Canadian Institute of Mining, Metallurgy and Petroleum Classification System. These standards differ from

the requirements of the U.S. Securities and Exchange Commission (“ SEC”) and resource information

contained in this news release may not be comparable to similar information disclosed by domestic United

States companies subject to the SEC's reporting and disclosure requirements.

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

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