# EDGAR Filing Document

**Accession Number:** 0001722387
**File Stem:** 0001062993-25-017485
**Filing Date:** 2025-12
**Character Count:** 65720
**Document Hash:** 4a6a01dd40fffbf486c55470aa3aabe1
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001062993-25-017485.hdr.sgml**: 20251230

**ACCESSION NUMBER**: 0001062993-25-017485

**CONFORMED SUBMISSION TYPE**: 6-K

**PUBLIC DOCUMENT COUNT**: 20

**CONFORMED PERIOD OF REPORT**: 20251229

**FILED AS OF DATE**: 20251230

**DATE AS OF CHANGE**: 20251229

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Integra Resources Corp.
- **CENTRAL INDEX KEY:** 0001722387
- **STANDARD INDUSTRIAL CLASSIFICATION:** GOLD & SILVER ORES [1040]
- **ORGANIZATION NAME:** 01 Energy & Transportation
- **EIN:** 000000000
- **STATE OF INCORPORATION:** A1
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 6-K
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-39372
- **FILM NUMBER:** 251610761

**BUSINESS ADDRESS:**
- **STREET 1:** 1050 - 400 BURRARD STREET
- **CITY:** VANCOUVER
- **STATE:** A1
- **ZIP:** V6C 3A6
- **BUSINESS PHONE:** (778) 873-8190

**MAIL ADDRESS:**
- **STREET 1:** 1050 - 400 BURRARD STREET
- **CITY:** VANCOUVER
- **STATE:** A1
- **ZIP:** V6C 3A6

------

**UNITED STATES**

**SECURITIES AND EXCHANGE COMMISSION**

Washington, D.C. 20549

**Form 6-K**

**REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 or 15d-16 UNDER THE<br>SECURITIES EXCHANGE ACT OF 1934**

For the month of <u>**December 2025.**</u>

Commission File Number <u>**001-39372**</u>

---

| |
|:---|
| <u>**INTEGRA RESOURCES CORP.**</u> |
| (Exact Name of Registrant as Specified in Charter) |

---

---

| |
|:---|
| **1050-400 Burrard Street**<br>**Vancouver, British Columbia V6C 3A6** <br><u>**Canada**</u> |
| (Address of principal executive office) |

---

Indicate by check mark whether the registrant files or will file annual reports under cover Form 20-F or Form 40-F

Form 20-F ☐ Form 40-F ☒

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1): ☐

**Note:** Regulation S-T Rule 101(b)(1) only permits the submission in paper of a Form 6-K if submitted solely to provide an attached annual report to security holders.

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7): ☐

---

| |
|:---|
| **Note:** Regulation S-T Rule 101(b)(7) only permits the submission in paper of a Form 6-K if submitted to furnish a report or other document that the registrant foreign private issuer must furnish and make public under the laws of the jurisdiction in which the registrant is incorporated, domiciled or legally organized (the registrant's "home country"), or under the rules of the home country exchange on which the registrant's securities are traded, as long as the report or other document is not a press release, is not required to be and has not been distributed to the registrant's security holders, and, if discussing a material event, has already been the subject of a Form 6-K submission or other Commission filing on EDGAR. |
| **EXPLANATORY NOTE** |
| Exhibits 99.1, 99.2, 99.3, 99.4, 99.5, 99.6, 99.7, 99.8 and 99.9 submitted with this Form 6-K is hereby incorporated by reference into Integra Resources Corp's Registration Statement on Form F-10 (File No. 333-276530). |

---

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**SIGNATURE**

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

---

| | |
|:---|:---|
|  | **Integra Resources Corp.** |
| Date: December 29, 2025 | /s/ Andree St-Germain |
|  | Andree St-Germain |
|  | Chief Financial Officer |

---

------

**INDEX TO EXHIBITS**

---

| | |
|:---|:---|
| [99.1](exhibit99-1.htm) | [Material Change Report dated December 29, 2025](exhibit99-1.htm) |
| [99.2](exhibit99-2.htm) | [Consent of James Frost](exhibit99-2.htm) |
| [99.3](exhibit99-3.htm) | [Consent of Barry Carlson](exhibit99-3.htm) |
| [99.4](exhibit99-4.htm) | [Consent of Deepak Malhotra](exhibit99-4.htm) |
| [99.5](exhibit99-5.htm) | [Consent of Forte Dynamics, LLC, part of SLR Consulting Limited](exhibit99-5.htm) |
| [99.6](exhibit99-6.htm) | [Consent of Jeffrey Bickel](exhibit99-6.htm) |
| [99.7](exhibit99-7.htm) | [Consent of Keith Watson](exhibit99-7.htm) |
| [99.8](exhibit99-8.htm) | [Consent of Jay Nopola](exhibit99-8.htm) |
| [99.9](exhibit99-9.htm) | [Consent of RESPEC Company LLC](exhibit99-9.htm) |

---

------

## Exhibit 99.1

------

**FORM 51-102F3**

**MATERIAL CHANGE REPORT**

**Item 1 Name and Address of Company**

Integra Resources Corp. ("**Integra**" or the "**Company**")<br>1050 - 400 Burrard Street<br>Vancouver, British Columbia<br>Canada V6C 3A6

**Item 2 Dates of Material Changes**

December 17, 2025 and December 22, 2025

**Item 3 News Releases**

News releases were disseminated through the facilities of Cision on December 17, 2025 and December 22, 2025, and subsequently filed under Integra's issuer profile on SEDAR+ at <u>www.sedarplus.ca</u>.

**Item 4 Summary of Material Changes**

On December 17, 2025, Integra announced the results of a feasibility study (the "**FS**") for its DeLamar Project (as defined below).

On December 22, 2025, Integra announced the full conversion and repayment of the Beedie Investments Ltd. ("**Beedie Capital**") convertible debenture facility (the "**Facility**").

**Item 5 Full Description of Material Changes**

**DELAMAR PROJECT FEASIBILITY STUDY**

Integra announced the results of an FS on its wholly-owned DeLamar gold and silver heap leach project ("**DeLamar**", the "**Project**" or the "**DeLamar Project**"), comprised of the DeLamar and Florida Mountain deposits, located in southwestern Idaho.

All references to the DeLamar Project in this material change report include both deposits, unless otherwise stated. All references to "$" in this material change report are to U.S. dollars unless otherwise stated.

**Feasibility Study Summary**

The FS confirms robust economics for a low-cost, large-scale, conventional open pit oxide heap leach operation, with competitive operating costs and high rate of return. The FS outlines total production of 1.1 million ounces ("**Moz**") of gold equivalent ("**AuEq**")[<sup>1</sup>](#_ftn1) over a 10-year operating mine life (plus two years of residual leaching), resulting in an average annual production profile of 106 thousand ounces ("**koz**") AuEq per annum at a co-product mine-site all-in sustaining cost ("**AISC**")[<sup>2</sup>](#_ftn2) of $1,480/oz. The Project generates an after-tax net present value ("**NPV**") 5% of $774 million ("**M**") with an after-tax internal rate of return ("**IRR**") of 46% at base case gold and silver prices of $3,000 per ounce ("**/oz**") and $35/oz, respectively.

__________________________

[<sup>1</sup>](#_ftnref1) Gold equivalent calculated using base case metal prices: $3,000/oz Au and $35/oz Ag.

[<sup>2</sup>](#_ftnref2) See Cautionary Note Regarding Non-GAAP Financial Measures.

------

The Company retained Forte Dynamics, LLC (now SLR Consulting Limited) ("**Forte**") as lead consultants, along with other engineering consultants, to complete the FS and prepare a technical report in accordance with National Instrument 43-101 - *Standards of Disclosure for Mineral Projects* ("**NI 43-101**"). The FS is derived from an updated mineral reserve estimate effective December 8, 2025. The effective date of the FS is December 8, 2025, and a technical report prepared in accordance with NI 43-101 will be filed on the Company's website and under its SEDAR+ profile within 45 days of the announcement news release.

<u>**Table 1: DeLamar Feasibility Study Highlights**</u><sup><u>**1**</u></sup>

---

| | |
|:---|:---|
| &nbsp;&nbsp;**Mining** |  |
| &nbsp;&nbsp;Total Tonnage Mined (k tonnes) | 185178 |
| &nbsp;&nbsp;Total Ore Mined (k tonnes) | 119972 |
| &nbsp;&nbsp;Strip Ratio (Waste: Ore) | 0.54 |
| &nbsp;&nbsp;Operating Mine Life (years) | 10 |
| &nbsp;&nbsp;**Contained** |  |
| &nbsp;&nbsp;Contained Gold (koz Au) | 1259 |
| &nbsp;&nbsp;Contained Silver (koz Ag) | 52310 |
| &nbsp;&nbsp;Contained Gold Equivalent (koz AuEq) | 1869 |
| &nbsp;&nbsp;**Production** |  |
| &nbsp;&nbsp;***Heap Leach Recovery*** |  |
| &nbsp;&nbsp;Life-of-mine ("**LOM**") Average Gold Recovery (%) | 72.3% |
| &nbsp;&nbsp;LOM Average Silver Recovery (%) | 33.2% |
| &nbsp;&nbsp;***Payable Metals*** |  |
| &nbsp;&nbsp;LOM Gold Payable (koz Au) | 910 |
| &nbsp;&nbsp;LOM Silver Payable (koz Ag) | 17392 |
| &nbsp;&nbsp;LOM Gold Equivalent Payable (koz AuEq) | 1113 |
| &nbsp;&nbsp;Avg. Annual Gold Payable (koz Au) - Yr 1 to Yr 10 | 88 |
| &nbsp;&nbsp;Avg. Annual Silver Payable (koz Ag) - Yr 1 to Yr 10 | 1602 |
| &nbsp;&nbsp;Avg. Annual Gold Equivalent Payable (koz AuEq) - Yr 1 to Yr 10 | 106 |
| &nbsp;&nbsp;Avg. Annual Gold Payable (koz Au) - Yr 1 to Yr 5 | 102 |
| &nbsp;&nbsp;Avg. Annual Silver Payable (koz Ag) - Yr 1 to Yr 5 | 1450 |
| &nbsp;&nbsp;Avg. Annual Gold Equivalent Payable (koz AuEq) - Yr 1 to Yr 5 | 119 |
| &nbsp;&nbsp;**Costs per Tonne** |  |
| &nbsp;&nbsp;Mining Costs ($/t mined) | $2.51 |
| &nbsp;&nbsp;Mining Costs ($/t processed) | $3.87 |
| &nbsp;&nbsp;Processing Costs ($/t processed) | $4.91 |
| &nbsp;&nbsp;G&A Costs ($/t processed) | $1.51 |
| &nbsp;&nbsp;Total Site Operating Cost ($/t processed) | $10.29 |
| &nbsp;&nbsp;**Cash Costs** |  |
| &nbsp;&nbsp;LOM Cash Cost, net-of-silver by-product ($/oz Au)<sup>2</sup> | $772 |
| &nbsp;&nbsp;LOM Cash Cost, co-product ($/oz AuEq)<sup>2</sup> | $1179 |
| &nbsp;&nbsp;LOM AISC, net-of-silver by-product ($/oz Au)<sup>2</sup> | $1142 |
| &nbsp;&nbsp;LOM AISC, co-product ($/oz AuEq)<sup>2</sup> | $1480 |

---

------

- 3 - <br>

---

| | |
|:---|:---|
| &nbsp;&nbsp;**Capital Expenditure (incl. Contingency)** |  |
| &nbsp;&nbsp;Pre-production Capital - incl. Contingency ($M)<sup>3</sup> | $347.0 |
| &nbsp;&nbsp;Bonding Cash Collateral ($M) | $3.9 |
| &nbsp;&nbsp;Owners' Cost ($M) | $38.2 |
| &nbsp;&nbsp;Total Initial Capital ($M) | $389.1 |
| &nbsp;&nbsp;Sustaining Capital / Equipment Financing - incl. Contingency ($M) | $304.9 |
| &nbsp;&nbsp;Reclamation Cost ($M)<sup>4</sup> | $65.5 |
| &nbsp;&nbsp;Salvage Value ($M) | ($8.1) |
| &nbsp;&nbsp;Bonding Cash Collateral Return ($M) | ($3.9) |
| &nbsp;&nbsp;Total Capital ($M) | $747.5 |
| &nbsp;&nbsp;**Base Case Metal Price Assumptions** |  |
| &nbsp;&nbsp;Gold Price ($/oz) | $3000 |
| &nbsp;&nbsp;Silver Price ($/oz) | $35 |
| &nbsp;&nbsp;**Base Case Project Economics** |  |
| &nbsp;&nbsp;After-Tax IRR (%) | 46.0% |
| &nbsp;&nbsp;After-Tax NPV5% ($M) | $773.7 |
| &nbsp;&nbsp;Payback Period (years) | 1.8 |
| &nbsp;&nbsp;Average Annual Net Free Cash Flow ($M)<sup>2</sup> - Yr 1 to Yr 10 | $142.8 |
| &nbsp;&nbsp;Total Net Free Cash Flow ($M) | $1066.3 |

---

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

(1) Gold equivalent calculated using base case metal prices: $3,000/oz Au and $35/oz Ag

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

(2) See Cautionary Note Regarding Non-GAAP Financial Measures

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

(3) Assumes mobile equipment financing

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

(4) Closure costs include $26.4 M ongoing water treatment reclamation liability

<u>**Figure 1: DeLamar Project Production and Operating Cost Profile**</u><sup><u>**1,2**</u></sup>

![](exhibit99-1x001.jpg)

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

(1) Gold equivalent calculated using base case metal prices: $3,000/oz Au and $35/oz Ag

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

(2) See Cautionary Note Regarding Non-GAAP Financial Measures

------

<u>**Figure 2: DeLamar Project After-Tax Cash Flow Profile (Base Case)**</u><sup><u>**1,2**</u></sup>

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

(1) Cash flow profile shown using base case metal prices: $3,000/oz Au and $35/oz Ag

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

(2) See Cautionary Note Regarding Non-GAAP Financial Measures

<u>**Table 2: DeLamar Project After-Tax NPV, IRR and Payback Sensitivity Table**</u>

---

| | | | | |
|:---|:---|:---|:---|:---|
| &nbsp;&nbsp;**$/oz Au** | &nbsp;&nbsp;**$/oz Ag** | &nbsp;&nbsp;**NPV5% ($M)** | &nbsp;&nbsp;**IRR (%)** | &nbsp;&nbsp;**Payback (years)** |
| &nbsp;&nbsp;$2250 | &nbsp;&nbsp;$20 | &nbsp;&nbsp;$178.3 | &nbsp;&nbsp;16% | &nbsp;&nbsp;4.5 |
| &nbsp;&nbsp;$2500 | &nbsp;&nbsp;$25 | &nbsp;&nbsp;$391.1 | &nbsp;&nbsp;27% | &nbsp;&nbsp;2.8 |
| &nbsp;&nbsp;$2750 | &nbsp;&nbsp;$30 | &nbsp;&nbsp;$584.6 | &nbsp;&nbsp;37% | &nbsp;&nbsp;2.2 |
| &nbsp;&nbsp;**$3000** | &nbsp;&nbsp;**$35** | &nbsp;&nbsp;**$773.7** | &nbsp;&nbsp;**46%** | &nbsp;&nbsp;**1.8** |
| &nbsp;&nbsp;$3250 | &nbsp;&nbsp;$40 | &nbsp;&nbsp;$961.6 | &nbsp;&nbsp;55% | &nbsp;&nbsp;1.6 |
| &nbsp;&nbsp;$3500 | &nbsp;&nbsp;$45 | &nbsp;&nbsp;$1149.0 | &nbsp;&nbsp;63% | &nbsp;&nbsp;1.4 |
| &nbsp;&nbsp;$3750 | &nbsp;&nbsp;$50 | &nbsp;&nbsp;$1336.2 | &nbsp;&nbsp;72% | &nbsp;&nbsp;1.3 |
| &nbsp;&nbsp;$4000 | &nbsp;&nbsp;$55 | &nbsp;&nbsp;$1523.5 | &nbsp;&nbsp;80% | &nbsp;&nbsp;1.2 |
| &nbsp;&nbsp;**$4250** | &nbsp;&nbsp;**$60** | &nbsp;&nbsp;**$1710.3** | &nbsp;&nbsp;**89%** | &nbsp;&nbsp;**1.1** |
| &nbsp;&nbsp;$4500 | &nbsp;&nbsp;$65 | &nbsp;&nbsp;$1897.1 | &nbsp;&nbsp;97% | &nbsp;&nbsp;1.0 |

---

**Property Description, Location and Access**

The historic mine site and Delamar Project are located within southwestern Idaho in Owyhee County approximately 80 air kilometers southwest of Idaho's state capital of Boise. The nearest town is Jordan Valley, Oregon which is situated near U.S. highway 95, a 1.5 hour drive from Boise. The Project is within the historical Carson mining district and includes the formerly producing DeLamar silver-gold mine, which was last operated by Kinross Gold Corporation. The Project is accessed via 28 kilometers of existing road east from Jordan Valley, Oregon.

------

<u>**Figure 3: DeLamar Project Location Map**</u>

![](exhibit99-1x002.jpg)

**Updated Mineral Resource Estimate**

Mineral Resources were re-estimated from the resource model released in 2023 which includes the Florida Mountain deposit, the DeLamar deposit, and historical stockpiles and backfill. The Mineral Resource Estimate is based on 3,348 drillholes totaling ~383,000 meters ("**m**"). Gold and silver mineralization was modeled following industry-standard and Canadian Institute of Mining, Metallurgy & Petroleum ("**CIM**")-compliant protocols.

Key steps included:

* Statistical evaluation of assay data and determination of natural grade populations.

* Construction of mineral-domain wireframes using 30-meter spaced sectional control.

* Projection and slicing of domain polygons across each deposit to ensure geological continuity.

* Coding of block models with gold and silver using level-plan geometries.

* Geostatistical analysis of mineralization trends to support estimation and classification.

* Grade interpolation using inverse-distance methods into 6 × 6 × 6 m blocks at the DeLamar deposit and 6 × 8 × 8 m blocks at the Florida Mountain deposit, with domain-specific coding to constrain estimates.

The Mineral Resource Estimate for the FS includes updated price assumptions and metallurgical recovery inputs for the pit optimization used to constrain them. Sulphide material continues to be reported in this Mineral Resource Estimate, consistent with prior studies, as it continues to show potential economic extraction. Importantly, the fundamental resource methodology has not changed from the 2023 mineral resource update.

------

<u>**Table 3: DeLamar Project Mineral Resources**</u>

![](exhibit99-1x003.jpg)

![](exhibit99-1x004.jpg)

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

(1) All Mineral Resource estimates have been prepared in accordance with NI 43-101 standards.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

(2) Mineral Resources that are not Mineral Reserves do not have demonstrated economic viability.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

(3) Jeffrey Bickel, of RESPEC Company LLC of Reno, Nevada, is a Qualified Person as defined in NI 43-101, and is responsible for reporting Mineral Resources for the DeLamar Project. Mr. Bickel is independent of the Company.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

(4) "Oxide", as listed above, is an aggregate category inclusive of all material types amenable to heap-leaching, including In-Situ Oxide, Stockpiles, and In-Situ Mixed material.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

(5) In-Situ Oxide/Mixed and Stockpile Mineral Resources are reported at a 0.17 and 0.1 g/t AuEq cut-off, respectively, in consideration of potential open-pit mining and heap leach processing.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

(6) Sulphide Mineral Resources are reported at a 0.3 g/t AuEq cut-off at DeLamar and 0.2 g/t AuEq at Florida Mountain in consideration of potential open pit mining and grinding, flotation, ultra-fine regrind of concentrates, and either Albion or agitated cyanide-leaching of the reground concentrates.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

(7) AuEq was calculated using a price of $2,650/oz Au and a price of $30/oz Ag, as well as metallurgical recoveries which were variable based on spatial area and each respective oxidation zone of the deposit.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

(8) The Mineral Resources are constrained by pit optimizations using a price of $2,650/oz Au, a price of $30/oz Ag, mining cost of $2.50/tonne, variable processing costs ranging from $3.26-$5.30/tonne, and metallurgical recoveries ranging from 45%-95% for Au and 15%-92% for Ag. Variable metallurgical recoveries and processing costs correspond to various material types including Oxide, Transition, Sulphide, and Stockpile materials, as well as spatial zones of the deposit with defined metallurgical characteristics. The pit optimizations also used a G&A cost of $0.65/tonne, pad replacement cost of $1.00/tonne for heap leach material, and refining costs of $0.00/oz and $0.50/oz for Au and Ag, respectively.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

(9) Rounding as required by reporting guidelines may result in apparent discrepancies between tonnes, grades, and contained metal content.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

(10) The estimate of Mineral Resources may be materially affected by geology, environment, permitting, legal, title, taxation, sociopolitical, marketing, or other relevant issues.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

(11) Mineral Resources reported are inclusive of Mineral Reserves.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

(12) The Effective Date of the Mineral Resource Estimate is December 8, 2025.

**Updated Mineral Reserve Estimate**

Proven and Probable Mineral Reserves for the Project utilized the updated resource model released in 2023, which was constrained by engineered pit designs based on Lerchs-Grossmann optimization shells, with appropriate cut-off grades that reflect updated metal prices, metallurgical recoveries, geotechnical criteria, and operating cost assumptions. No changes were made to the underlying reserve methodology since the pre-feasibility study ("**PFS**") released in 2022. Variations in Mineral Reserves from the previous PFS study are from the updated 2023 resources (which includes the addition of historical stockpile resources), revised cost assumptions, and metallurgical recoveries. Mineral Reserves have been updated for heap leach only material to streamline permitting, simplify processing and reduce capital. This removes sulphide material from the Mineral Reserve. Additionally, drill-tested historic low grade ore stockpiles included in the Mineral Resource Estimate have been included in the Mineral Reserve.

------

<u>**Table 4: DeLamar Project Mineral Reserves**</u>

![](exhibit99-1x005.jpg)

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

(1) All estimates of Mineral Reserves have been prepared in accordance with NI 43-101 standards and are included within the current Measured and Indicated Mineral Resources.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

(2) Sterling K, Watson, P.Eng., of RESPEC Company LLC of Reno, Nevada, is a Qualified Person as defined in NI 43-101, and is responsible for reporting Mineral Reserves for the DeLamar Project. Mr. Watson is independent of the Company.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

(3) Mineral Reserves are based on prices of $2,000/oz Au and $25/oz Ag. The Mineral Reserves were defined based on pit designs that were created to follow optimized pit shells created in Whittle. Pit designs followed pit slope recommendations provided by RESPEC.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

(4) Mineral Reserves are reported using block value cutoff grades representing the cost of processing.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

(5) The Mineral Reserves are constrained by pit optimizations using a price of $2,000/oz Au, a price of $25/oz Ag, mining cost of $2.50/tonne, variable processing costs ranging from $3.26-$5.30/tonne, and metallurgical recoveries ranging from 45%-95% for Au and 15%-92% for Ag. The pit optimizations also used a G&A cost of $0.65/tonne, pad replacement cost of $1.00/tonne for heap-leach material, and refining costs of $0.00/oz and $0.50 for Au and Ag, respectively.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

(6) Energy prices of US$3.50 per gallon of diesel.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

(7) Pit optimizations were run on a range of prices from $500/oz Au to $3,000/oz Au.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

(8) The cut-off grade for Mineral Reserves is based on economics at a "Break-Even Internal" cut-off grade for the deposits.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

(9) The Mineral Reserves purposes of reference is the point where material is fed into the crusher.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

(10) All ounces reported herein represent troy ounces, "g/t Au" represents grams per tonne gold and "g/t Ag" represents grams per tonne silver.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

(11) Mineral Resources reported are inclusive of Mineral Reserves.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

(12) Rounding as required by reporting guidelines may result in apparent discrepancies between tonnes, grades, and contained metal content.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

(13) The estimate of Mineral Reserves may be materially affected by geology, environment, permitting, legal, title, taxation, sociopolitical, marketing, or other relevant issues.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

(14) The Effective Date of the Mineral Reserve Estimate is December 8, 2025.

**Production Profile**

The contemplated operation in the FS spans 13 years, comprising one year of construction (Year -1), 10 years of active mining and gold-silver processing operations, and two years of residual leaching and nominal production. The Project is expected to produce a total of approximately 1.1 Moz AuEq.

------

The first six months of the construction period focuses on establishing the Florida Mountain deposit heap leach pad, utilizing readily available historical low-grade gold-silver ore stockpile as overliner material. This material will be screened and crushed and will provide a flow channel for leachate.

This allows the stacking of fresh, higher-grade gold-silver ore from the Florida Mountain deposit and the application of leach solution to start in month seven of the construction year, unlocking the ability to produce ~7 koz AuEq in Year -1. As solution inventory builds and leach flows increase through month 20, production ramps accordingly, resulting in 119 koz AuEq produced during the first full year after construction (Year 1). The DeLamar deposit heap leach pad construction begins in Year 3 and begins to receive DeLamar deposit historic stockpile and pit ore in Year 4. Active mining operations will continue until Year 10 followed by two years of residual gold-silver leaching.

<u>**Figure 4: DeLamar Project Production Breakdown by Area**</u>

![](exhibit99-1x006.jpg)

<u>**Figure 5: DeLamar Project Production Breakdown by Metal**</u>

![](exhibit99-1x007.jpg)

------

**Mining**

Mining is designed as a conventional open-pit operation using truck-and-shovel methods, focused on delivering high grade gold-equivalent production from the Florida Mountain deposit early in the Project, before transitioning to sustained mid-life production at the DeLamar deposit. The mine plan schedules 185 million tonnes ("**Mt**") of total material movement over the 10-year active mine life, including 120 Mt of ore with an average grade of 0.33 g/t Au and 13.6 g/t Ag, for a combined 1.3 Moz of contained gold and 52.3 Moz of contained silver. Strip ratios remain low and consistent at 0.54:1 over the life-of-mine, supporting efficient mining and strong early cash flows. Mining rates of ore are planned for 35,000 tonnes per day ("**tpd**") with no more than 12 benches extracted per year.

Material movement is sequenced to prioritize higher-grade Florida Mountain deposit ore in the first four years, enabling average production of ~119 koz AuEq per year during the payback window. Mid-life mining transitions to the DeLamar deposit pit, which provides consistent tonnage, stable grades, and reduced haulage requirements as backfill is incorporated into the sequencing.

Mining assumptions are built from first principles, including drill penetration rates, powder factors, cycle times, equipment availabilities, and original equipment manufacturer-validated haulage models. The fleet includes up to 17 haul trucks, three production drills, and a matched loading fleet of excavators and shovels sized to maintain efficient dig-and-haul cycles. Waste placement and backfilling strategies minimize external dump requirements and align with closure objectives. Overall, the mining plan reflects an executable, low-risk approach that supports strong economics, operational flexibility, and a smooth transition into reclamation activities in the later years of the Project.

<u>**Figure 6: DeLamar Project Mining Profile**</u>

![](exhibit99-1x008.jpg)

**Processing and Recovery**

Project mineralization is amenable to conventional cyanide leaching. The Project has an updated two heap leach configuration that considers environmental, heap stability, and economic impacts. This configuration balances early capital efficiency with operational flexibility, allowing staged commissioning while managing particle fines and agglomeration risk across distinct ore domains. To reduce truck haulage requirements, one heap leach pad will be located adjacent to the Florida Mountain deposit, and the other will be located adjacent to the DeLamar deposit.

------

Run-of-mine ore will be transferred from the pits via haul trucks to their respective heaps leach pads for two-stage crushing before stacking. The crushing circuit consists of a primary mineral sizer and secondary low-pressure roll crusher, reducing the particle size of run of mine ore to a P80 (particle size at which 80% of the sample material passes) of approximately 19 millimeters. The selection of crushing equipment was supported by abrasion and impact testing.

The crushed ore from the Florida Mountain deposit contains limited fines and does not require agglomeration, making it suitable for direct truck dump stacking following two-stage crushing.

A portion of the crushed ore from the DeLamar deposit pit contains enough fines and clay and will require agglomeration through a screening and agglomeration circuit followed by curing and conveyor stacking. Screening and selective agglomeration are applied only where required, minimizing operating complexity while protecting permeability and recovery performance.

Heaps leach pads will be stacked at a rate of 35,000 tpd. Cyanide solution will be applied and processed via a small Merrill-Crowe facility located near the DeLamar deposit heap leach pad, designed for a throughput of approximately 1,360 m<sup>3</sup> per hour. Filter cakes will be further processed at Integra's Florida Canyon Mine refinery to produce doré bars, reducing initial capital requirements for DeLamar. Florida Canyon is expected to have sufficient permitted capacity to process DeLamar doré without modification.

<u>**Figure 7: DeLamar Project Heap Leach Stacking by Source**</u>

![](exhibit99-1x009.jpg)

<u>**Table 5: DeLamar Project Mining & Processing Summary**</u>

---

| | | | | |
|:---|:---|:---|:---|:---|
| &nbsp;&nbsp;**Mining** | **DeLamar** | **Florida Mtn.** | **Stockpiles** | **Total** |
| &nbsp;&nbsp;Total Tonnage Mined (kt) | 75905 | 76625 | 32648 | **185178** |
| &nbsp;&nbsp;Total Ore Mined (kt) | 35072 | 52253 | 32648 | **119972** |
| &nbsp;&nbsp;Strip Ratio (Waste: Ore) | 1.16 | 0.47 | 0.00 | **0.54** |
| &nbsp;&nbsp;**Grade** | &nbsp;&nbsp;**Grade** | &nbsp;&nbsp;**Grade** | &nbsp;&nbsp;**Grade** | &nbsp;&nbsp;**Grade** |
| &nbsp;&nbsp;Average Gold Grade (g/t Au) | 0.33 | 0.37 | 0.24 | **0.33** |
| &nbsp;&nbsp;Average Silver Grade (g/t Ag) | 18.92 | 10.18 | 13.22 | **13.56** |

---

------

- 11 - <br>

---

| | | | | |
|:---|:---|:---|:---|:---|
| &nbsp;&nbsp;**Contained Metals** | &nbsp;&nbsp;**Contained Metals** | &nbsp;&nbsp;**Contained Metals** | &nbsp;&nbsp;**Contained Metals** | &nbsp;&nbsp;**Contained Metals** |
| &nbsp;&nbsp;Contained Gold (koz Au) | 377 | 628 | 254 | **1259** |
| &nbsp;&nbsp;Contained Silver (koz Ag) | 21339 | 17095 | 13877 | **52310** |
| &nbsp;&nbsp;Contained Gold Equivalent (koz AuEq) | 626 | 827 | 416 | **1869** |
| &nbsp;&nbsp;**Production** | &nbsp;&nbsp;**Production** | &nbsp;&nbsp;**Production** | &nbsp;&nbsp;**Production** | &nbsp;&nbsp;**Production** |
| &nbsp;&nbsp;***Heap Leach Recovery*** | &nbsp;&nbsp;***Heap Leach Recovery*** | &nbsp;&nbsp;***Heap Leach Recovery*** | &nbsp;&nbsp;***Heap Leach Recovery*** | &nbsp;&nbsp;***Heap Leach Recovery*** |
| &nbsp;&nbsp;LOM Average Gold Recovery (%) | 66.1% | 74.1% | 76.9% | **72.3%** |
| &nbsp;&nbsp;LOM Average Silver Recovery (%) | 26.9% | 37.9% | 37.4% | **33.2%** |
| &nbsp;&nbsp;***Payable Metals*** | &nbsp;&nbsp;***Payable Metals*** | &nbsp;&nbsp;***Payable Metals*** | &nbsp;&nbsp;***Payable Metals*** | &nbsp;&nbsp;***Payable Metals*** |
| &nbsp;&nbsp;LOM Gold Payable (koz Au) | 249 | 465 | 196 | **910** |
| &nbsp;&nbsp;LOM Silver Payable (koz Ag) | 5734 | 6472 | 5185 | **17392** |
| &nbsp;&nbsp;LOM Gold Equivalent Payable (koz AuEq) | 316 | 540 | 256 | **1113** |

---

**Power and Infrastructure**

The Project infrastructure strategy prioritizes refurbishment and targeted upgrades to minimize initial capital, while maintaining reliability and certainty around the construction schedule.

DeLamar historically operated as a fully serviced site until 1998 after which limited remediation and ongoing care and maintenance were completed. Several existing facilities and infrastructure elements remain in place and will be refurbished or augmented for the new Project. New infrastructure will be constructed only where required to meet capacity, safety, or operational performance requirements of the Project.

The Project will require up to 6.5 megawatts ("**MW**") of power which will be supplied to the site by the refurbished 69-kilovolt ("**kV**") transmission line and distributed throughout the site via a new substation and refurbished 4,160 power distribution network. A 2 MW backup generator is planned to be installed for back-up or emergency power.

The existing water treatment plant will be upgraded and augmented with more treatment capacity for use in the Project.

On-site facilities will be selectively upgraded to align with the planned mining fleet and operation profile. The existing five-bay mobile maintenance shop will be upgraded to six-bays, large enough to accommodate 150-tonne series haul trucks. The administration building will be repaired, and site communications infrastructure will be enhanced. Existing site roads will be refurbished and upgraded limiting the need for new roads.

A small Merrill-Crowe plant will be constructed with ditches and ponds to capture contact water for treatment and industrial use. Additional new construction includes a two-stage crushing circuit, truck wash, laboratory, and warehouse.

**Operating Costs**

Operating costs were estimated through first principles and supplier quotes. Where possible, first principal assumptions and costs of units were compared to those experienced at the Florida Canyon Mine, Integra's active heap leach operation in Nevada.

Mining operating cost estimates were prepared by RESPEC Company LLC ("**RESPEC**") using first principles. This was done using estimated hourly costs of equipment and personnel against the anticipated hours of work for each. The equipment hourly costs were estimated for fuel, oil and lubrication, tires, under-carriage, repair and maintenance costs, and special wear items. First principal assumptions and the cost of mine personnel and consumables were benchmarked against Florida Canyon.

------

Process operating costs were developed by Forte from first principles to determine unit consumptions of materials, supplies, power and personnel, and the estimated cost of unit for these was estimated from supplier quotes and industry benchmarks. The cost of materials, supplies, power and labor were benchmarked against Florida Canyon.

Labor general and administrative ("**G&A**") costs were estimated based on personnel requirements for administrative, accounting, safety and security, and environmental departments to support mining and processing activities. Costs are also included for legal, land, permit bonding and power. G&A costs were benchmarked against Florida Canyon.

<u>**Table 6: DeLamar Project Operating and Mining Cost Breakdown**</u>

---

| | | |
|:---|:---|:---|
|  | **Per Tonne** | **Per Tonne** |
| &nbsp;&nbsp;**LOM Operating Costs (US$)** | **Mined** | **Processed** |
| &nbsp;&nbsp;Mining | $2.51 | $3.87 |
| &nbsp;&nbsp;Processing |  | $4.91 |
| &nbsp;&nbsp;G&A |  | $1.51 |
| &nbsp;&nbsp;**Total Site Costs** |  | **$10.29** |
|  | **$/oz Au** | **$/oz AuEq** |
| &nbsp;&nbsp;**LOM Cash Costs, AISC & AIC Breakdown** | **By-Product** | **Co-Product** |
| &nbsp;&nbsp;Mining | $510 | $417 |
| &nbsp;&nbsp;Processing | $648 | $530 |
| &nbsp;&nbsp;G&A | $199 | $163 |
| &nbsp;&nbsp;**Total Site Costs** | **$1357** | **$1110** |
| &nbsp;&nbsp;Transport & Refining | $10 | $8 |
| &nbsp;&nbsp;Royalties<sup>1</sup> | $75 | $61 |
| &nbsp;&nbsp;**Total Cash Costs** | **$1441** | **$1179** |
| &nbsp;&nbsp;Silver By-Product Credits | ($669) |  |
| &nbsp;&nbsp;**Total Cash Costs Net of Silver By-Product** | **$772** | **$1179** |
| &nbsp;&nbsp;Sustaining Capital | $335 | $274 |
| &nbsp;&nbsp;Closure Costs Net of Residual Value<sup>2</sup> | $34 | $28 |
| &nbsp;&nbsp;**Site Level All-in Sustaining Costs** | **$1142** | **$1480** |

---

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

(1) Royalty summary outlined below

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

(2) Closure costs for AISC calculation exclude ongoing water treatment reclamation costs

**Project Royalties**

The FS considers two primary royalties that apply to the Project. Triple Flag Precious Metals Corp. ("**Triple Flag**") holds a 2.5% net smelter returns royalty ("**NSR**") that applies to ~90% of the current DeLamar deposit Mineral Resources and Reserves, however the royalty will be reduced to 1.0% upon Triple Flag receiving total royalty payments of C$10 M. A wholly-owned subsidiary of Wheaton Precious Metals Corp. currently holds a 1.5% NSR that applies to the current DeLamar and Florida Mountain deposit Mineral Resources and Reserves. The production profile in the FS reflects an average royalty rate of 2.3%.

------

**Capital Cost Estimates**

Capital cost estimates emphasize constructability, vendor-supported pricing, and execution sequencing aligned with the planned development schedule.

Mining initial and sustaining capital estimates were prepared by RESPEC. Estimates assume owner-operated mining equipment and are based on the equipment and facilities required to achieve the production schedule. Capital costs are based on estimation guides, quotations from equipment vendors and recent costs for new equipment at the Company's operating Florida Canyon mine in Nevada.

The process and infrastructure capital costs were developed by Forte for initial and sustaining capital. The capital costs for each phase are comprised of direct costs and indirect costs. The direct costs were developed from labor, materials, plant equipment, sub-contracts, and construction equipment. Indirect costs were applied to the direct costs to account for items such as: construction support, engineering, procurement and construction management, vendor support during specialty construction and commissioning, spare parts, contingency, owner's costs, freight and taxes. Capital costs were estimated based on 2025 U.S. dollars and are presented with no added escalation.

<u>**Table 7: DeLamar Project Capital Cost Breakdown**</u>

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| | | | | |
|:---|:---|:---|:---|:---|
| &nbsp;&nbsp;**Capital Cost Breakdown** <br>**($M)** | **Pre-Production** <br>**(Yr -1)** | **Sustaining** <br>**(Yr 1 to Yr 10)** | **Reclamation** | **Combined<br>LOM** |
| &nbsp;&nbsp;&nbsp;&nbsp;**Capital Costs** |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Mining<sup>1,2</sup> | $27.8 | $145.1 |  | $172.9 |
| &nbsp;&nbsp;&nbsp;&nbsp;Processing | $276.5 | $136.1 |  | $412.6 |
| &nbsp;&nbsp;&nbsp;&nbsp;G&A | $5.1 | $0.0 |  | $5.1 |
| &nbsp;&nbsp;&nbsp;&nbsp;**Capex Sub-Total** | **$309.4** | **$281.2** |  | **$590.6** |
| &nbsp;&nbsp;&nbsp;&nbsp;Contingency<sup>3</sup> | $37.6 | $23.7 |  | $61.3 |
| &nbsp;&nbsp;&nbsp;&nbsp;**Total Capital Costs** | **$347.0** | **$304.9** |  | **$651.9** |
| &nbsp;&nbsp;&nbsp;&nbsp;**Other Capital** |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Owners' Costs | $38.2 |  |  | $38.2 |
| &nbsp;&nbsp;&nbsp;&nbsp;Reclamation - Site<sup>4</sup> |  |  | $65.5 | $65.5 |
| &nbsp;&nbsp;&nbsp;&nbsp;Cash Collateral (bonding) | $3.9 |  | ($3.9) | $0.0 |
| &nbsp;&nbsp;&nbsp;&nbsp;Residual Value |  |  | ($8.1) | ($8.1) |
| &nbsp;&nbsp;&nbsp;&nbsp;**Total Other Capital** | **$42.1** | **$0.0** | **$53.5** | **$95.6** |
| &nbsp;&nbsp;&nbsp;&nbsp;**TOTAL CAPITAL** | **$389.1** | **$304.9** | **$53.5** | **$747.5** |

---

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

(1) Assumes financing of mobile equipment. Pre-production = 10% cash down and 1 year of payments

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

(2) Includes $10 M in pre-stripping

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

(3) Overall contingency of 12% (Mining 5%, Processing 13%, G&A 17%)

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

(4) Includes $26.4 M for ongoing water treatment post mine closure

------

**Environmental and Permitting**

The Project is supported by strong environmental and technical teams that have led major advancements in obtaining necessary approvals and permits since the 2022 PFS, including the Mine Plan of Operations completeness determination by the U.S. Bureau of Land Management ("**BLM**") and the completion of environmental resource baseline studies to support Project environmental effects analysis under NEPA. Integra has an established collaborative approach with regulatory agencies and our technical teams and will continue to develop the Project to meet all applicable regulatory standards. The construction and operation of the Project require further permitting which will continue to actively advance in 2026 and 2027 through parallel U.S. Federal, State of Idaho, and Owyhee County permitting processes that address mine reclamation, air and water quality, wetland impacts and cyanidation.

In accordance with the BLM's mandate to prevent undue environmental degradation on public lands, the Project design optimization has continued to focus on the reduction of environmental impacts and surface disturbance of the mine operation through a leaching-focused process, consolidation of development rock storage facilities and the design of heap leach facilities in proximity to the open pits. Through various studies conducted on the Project over the years, the proposed mine footprint has been reduced by ~25%. This optimization will continue through the evaluation of agency-proposed alternatives and mitigations during the NEPA process to deliver a robust mine operation that is protective of water resources, air quality, cultural resources, wildlife and vegetation, and post-mine land use.

**Stakeholder, Community, and Tribal Nation Engagement**

Since Project acquisition in the third quarter of 2017, the Company has operated with dedicated budget and personnel to engage proactively with the communities, Tribal Nations, and other stakeholders with ties to DeLamar. With increasing frequency as the Project approaches state and federal permitting, the Company has worked to build lasting relationships with a wide range of stakeholders, including nearby residents and community members, Tribal Nations, nongovernmental organizations and various levels of government representatives. This approach reflects a deep Company-wide commitment to a high standard of social performance, achieved by acting transparently and building mutual respect and shared value.

Stakeholder engagement is guided by an External Stakeholder Plan ("**ESP**"), a Project site-specific plan that is updated annually to guide the activities, goals, and strategies for stakeholder engagement in a tailored manner that reflects the unique requirements of each region, individual stakeholder context, and cultural settings surrounding DeLamar. The ESP management approach specifically addresses the Company's stakeholder engagement, public communication, community involvement & investment, and monitoring & reporting - including social impact risks assessments, grievance procedures, materiality, and metric tracking.

Since 2020, Integra has worked to engage proactively and respectfully with potentially affected Tribal Nations, with the intent to exceed regulatory requirements by prioritizing early, inclusive, and respectful dialogue in order to build mutual understanding and recognize Tribal interests. In 2025, Integra and the Shoshone-Paiute Tribes of the Duck Valley Indian Reservation entered into a Relationship Agreement that will guide a mutually beneficial partnership between the two parties over the course of the permitting, development, and future operation of the Project. Integra is concurrently advancing discussions with additional Tribal Nations to evaluate the interest in developing similar relationships.

Integra's approach of being present and active within the Project's stakeholder network has allowed the Company to build consensus and collaborate on issues of shared concern as the mine and operational designs have iteratively evolved. Potential social and community impacts have been and will continue to be considered and evaluated in accordance with the NEPA and other federal and state laws. There are no currently known social or community issues that would be expected to have a material impact on the Company's ability to mine at the Project.

------

**No Production Decision**: The Company has not made a production decision for the Project. A decision to proceed with construction will only be made following the completion and review of detailed engineering, financing arrangements, and receipt of all required permits and approvals.

**Qualified Persons**

The scientific and technical information contained in this material change report has been reviewed and approved by James Frost, P.Eng., Director, Technical Services of Integra Resources Corp., who is a qualified person as defined by NI 43-101.

Forte Dynamics, LLC, part of SLR Consulting Limited, has led the FS and is managing the FS technical report with RESPEC Company LLC contributing. The following independent qualified persons with associated firms have reviewed and approved this material change report as defined by NI 43-101:

Barry Carlson, P.E., SME-RN, Forte Dynamics, LLC

Deepak Malhotra, Phd., SME-RN, Forte Dynamics, LLC

Jeffrey Bickel, C.P.G., RESPEC Company LLC

Keith Watson, P.Eng., RESPEC Company LLC

Jay Nopola, P.E., RESPEC Company LLC

**Data Verification**

The qualified persons responsible for the FS technical report have verified the data for which they are accountable, including the sampling, analytical, and test data underlying the information disclosed in this material change report. Geological, mine engineering and metallurgical reviews included, among other things, reviewing drill data and core logs, review of geotechnical and hydrological studies, environmental and community factors, the development of the life of mine plan, capital and operating costs, transportation, taxation and royalties, and review of existing metallurgical test work. In the opinion of the qualified persons, the data, assumptions, and parameters used in the sections of the FS that they are responsible for preparing are sufficiently reliable for those purposes. The technical report in respect of the FS, when filed, will contain more detailed information concerning individual qualified persons responsibilities, associated quality assurance and quality control, and other data verification matters, and the key assumptions, parameters and methods used by the Company.

**Sampling and QA/QC Procedure**

Thorough QA/QC protocols are followed on the Project, including insertion of duplicate, blank and standard samples in the assay stream for all drill holes. The samples are submitted directly to American Assay Labs in Reno, Nevada for preparation and analysis. Analysis of gold is performed using fire assay method with atomic absorption (AA) finish on a 1 assay ton aliquot. Gold results over 5 g/t are re-run using a gravimetric finish. Silver analysis is performed using ICP for results up to 100 g/t on a 5-acid digestion, with a fire assay, gravimetric finish for results over 100 g/t silver.

Additional supporting details regarding the information in this material change report, will be provided in the FS technical report which will be available on SEDAR+ under the Company's profile within 45 days of the news release, including all qualifications, assumptions and exclusions that relate to the FS. The FS technical report is intended to be read as a whole, and sections should not be read or relied upon out of context.

------

**BEEDIE CONVERSION**

On December 22, 2025, Integra announced the full conversion and repayment of the Beedie Capital Facility. Pursuant to the terms of the Facility credit agreement (the "**Credit Agreement**"), as amended, the Company issued a total of 12,295,081 common shares at a deemed price per common share of C$1.6875 (US$1.22) to retire the full US$15 million principal amount drawn under the Facility and paid US$2,896,712 in accrued interest and standby fees. In connection with the conversion and repayment of the Facility, the Facility has been retired and certain assets secured under the Facility have been released. There are no further amounts due or owing to Beedie Capital under the Facility.

Pursuant to the terms of the Credit Agreement, certain provisions including, but not limited to, Beedie's board of directors of Integra ("**Board**") observer and nomination rights, and pre-emptive rights, survive termination of the Facility. In connection with the conversion and repayment of the Facility, the Company agreed to amend the termination provisions of Beedie's Board nomination right such that Beedie's right to nominate an individual to the Board will not terminate when Beedie owns less than 10% of the Company's issued and outstanding common shares (the "**Nominating Threshold**") and will reinstate if Beedie satisfies the Nominating Threshold at any time after not meeting the Nominating Threshold provided Beedie at all times holds not less than 7.5% of the issued and outstanding common shares of the Company.

**Item 6 Reliance on subsection 7.1(2) of National Instrument 51-102**

N/A

**Item 7 Omitted Information**

N/A

**Item 8 Executive Officer**

Andrée St-Germain, Chief Financial Officer <br>Telephone (778) 873-8190

**Item 9 Date of Report**

December 29, 2025

**Forward Looking Statements**

Certain information set forth in this material change report contains "forward-looking statements" and "forward-looking information" within the meaning of applicable Canadian securities legislation and in applicable United States securities law (referred to herein as forward-looking statements). Forward-looking statements are often identified by the use of words such as "may", "will", "could", "would", "anticipate", "believe", "expect", "intend", "potential", "estimate", "budget", "scheduled", "plans", "planned", "forecasts", "goals" and similar expressions. Except for statements of historical fact, certain information contained herein constitutes forward-looking statements which includes, but is not limited to, statements with respect to: the future financial or operating performance of the Company, the Project and its mineral properties; 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 the FS for the Project, including cash flows, revenue potential, development, expenditures, and timing thereof, extraction rates, life-of-mine projections and cost estimates; timing of completion of a technical report summarizing the results of the FS; magnitude or quality of mineral deposits; anticipated advancement of the Project mine plan; exploration expenditures, costs and timing of the development of new deposits; costs and timing of future exploration; permitting; construction and optimization planning; estimates of metallurgical recovery rates; anticipated advancement of the Project, future prospects and prospective inclusion of Mineral Resources in future mining activities; 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 the Project; future growth potential of the Project; and future development plans.

------

Forward-looking statements are based on a number of factors and assumptions made by management and considered reasonable at the time such statement was made. Assumptions and factors include: the Company's ability to complete its planned exploration and development programs; the absence of adverse conditions at the Project and the Company's mineral properties; satisfying ongoing covenants under the Company's loan facilities; no unforeseen operational delays; no material delays in obtaining necessary permits; results of independent engineer technical reviews; the possibility of cost overruns and unanticipated costs and expenses; the price of gold remaining at levels that continue to render the Project and the Company's mineral properties economic; the Company's 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 may 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: 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, labor disputes and other risks of the mining industry; delays in obtaining governmental approvals or financing; risks related to local communities; the speculative nature of mineral exploration and development (including the risks of obtaining necessary licenses, permits and approvals from government authorities); title to properties; and other factors beyond the Company's control and as well as those factors included herein and elsewhere in the Company's public disclosure. Although the Company has 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 Information Form dated March 26, 2025 for the fiscal year ended December 31, 2024, which is available on the SEDAR+ issuer profile for the Company at <u>www.sedarplus.ca</u> and available as Exhibit 99.1 to Integra's Form 40-F, which is available on the EDGAR profile for the Company at <u>www.sec.gov</u>.

Investors are cautioned not to put undue reliance on forward-looking statements. The forward-looking statements contained herein are made as of the date of this material change report and, accordingly, are subject to change after such date. The Company disclaims any intent or obligation to update publicly or otherwise revise any forward-looking statements or the foregoing list of assumptions or factors, whether as a result of new information, future events or otherwise, except in accordance with applicable securities laws. Investors are urged to read the Company's filings with Canadian securities regulatory agencies, which can be viewed online under the Company's profile on SEDAR+ at <u>www.sedarplus.ca</u>.

------

**Cautionary Note Regarding Non-GAAP Financial Measures**

Alternative performance measures in this material change report such as "cash cost", "AISC" and "free cash flow" are furnished to provide additional information. These non-GAAP performance measures are included in this material change report because these statistics are used as key performance measures that management uses to monitor and assess performance of DeLamar, and to plan and assess the overall effectiveness and efficiency of mining operations. These performance measures do not have a standardized meaning within International Financial Reporting Standards ("**IFRS**") and, therefore, amounts presented may not be comparable to similar data presented by other mining companies. These performance measures should not be considered in isolation as a substitute for measures of performance in accordance with IFRS.

*Cash Costs*

Cash costs include site operating costs (mining, processing, site G&A), refinery costs and royalties, but excludes head office G&A and exploration expenses. While there is no standardized meaning of the measure across the industry, the Company believes that this measure is useful to external users in assessing operating performance.

*All-In Sustaining Cost* 

Site level AISC includes cash costs and sustaining and expansion capital, but excludes head office G&A and exploration expenses. The Company believes that this measure is useful to external users in assessing operating performance and the Company's ability to generate free cash flow from potential operations.

*Free Cash Flow*

Free cash flows are revenues net of operating costs, royalties, capital expenditures and cash taxes. The Company believes that this measure is useful to the external users in assessing the Company's ability to generate cash flows from the Project.

**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 material change report 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 and reserve information contained in this material change report may not be comparable to similar information disclosed by domestic United States companies subject to the SEC's reporting and disclosure requirements.

------

## Exhibit 99.2

------

**CONSENT OF EXPERT**

December 29, 2025

Integra Resources Corp.

United States Securities and Exchange Commission

Ladies and Gentlemen:

**Re: Integra Resources Corp.**

I, James Frost, do hereby consent to:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1) the inclusion in this Current Report on Form 6-K of Integra Resources Corp. (the "Company") of the written disclosure in the Company's Material Change Report dated December 29, 2025 (the "MCR"), being filed with the United States Securities and Exchange Commission (the "SEC"); and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(2) the filing of this consent under cover of Form 6-K with the SEC and of the incorporation by reference of this consent and the MCR into, and the use of my name in, the Company's Registration Statement on Form F-10 (File No. 333-276530), and any amendments thereto, filed with the SEC.

---

| | |
|:---|:---|
| By: | */s/ "James Frost"* |
|  | James Frost, P.Eng.<br>Integra Resources Corp.<br>Director, Technical Services |

---

------

## Exhibit 99.3

------

**CONSENT OF EXPERT**

December 29, 2025

Integra Resources Corp.

United States Securities and Exchange Commission

Ladies and Gentlemen:

**Re: Integra Resources Corp.**

I, Barry Carlson, do hereby consent to:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1) the inclusion in this Current Report on Form 6-K of Integra Resources Corp. (the "Company") of the written disclosure in the Company's Material Change Report dated December 29, 2025 (the "MCR"), being filed with the United States Securities and Exchange Commission (the "SEC"); and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(2) the filing of this consent under cover of Form 6-K with the SEC and of the incorporation by reference of this consent and the MCR into, and the use of my name in, the Company's Registration Statement on Form F-10 (File No. 333-276530), and any amendments thereto, filed with the SEC.

---

| | |
|:---|:---|
| By: | */s/ "Barry Carlson"* |
|  | Barry Carlson, P.E., SME-RN |

---

------

## Exhibit 99.4

------

**CONSENT OF EXPERT**

December 29, 2025

Integra Resources Corp.

United States Securities and Exchange Commission

Ladies and Gentlemen:

**Re: Integra Resources Corp.**

I, Deepak Malhotra, do hereby consent to:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1) the inclusion in this Current Report on Form 6-K of Integra Resources Corp. (the "Company") of the written disclosure in the Company's Material Change Report dated December 29, 2025 (the "MCR"), being filed with the United States Securities and Exchange Commission (the "SEC"); and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(2) the filing of this consent under cover of Form 6-K with the SEC and of the incorporation by reference of this consent and the MCR into, and the use of my name in, the Company's Registration Statement on Form F-10 (File No. 333-276530), and any amendments thereto, filed with the SEC.

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| | |
|:---|:---|
| By: | */s/ "Deepak Malhotra"* |
|  | Deepak Malhotra, Phd., SME-RN |

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## Exhibit 99.5

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**CONSENT OF EXPERT**

December 29, 2025

Integra Resources Corp.

United States Securities and Exchange Commission

Ladies and Gentlemen:

**Re: Integra Resources Corp.**

We, Forte Dynamics, LLC, part of SLR Consulting Limited, do hereby consent to:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1) the inclusion in this Current Report on Form 6-K of Integra Resources Corp. (the "Company") of the written disclosure in the Company's Material Change Report dated December 29, 2025 (the "MCR"), being filed with the United States Securities and Exchange Commission (the "SEC"); and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(2) the filing of this consent under cover of Form 6-K with the SEC and of the incorporation by reference of this consent and the MCR into, and the use of my name in, the Company's Registration Statement on Form F-10 (File No. 333-276530), and any amendments thereto, filed with the SEC.

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| | |
|:---|:---|
| By: | */s/ "Barry Carlson"* |
|  | Forte Dynamics, LLC, part of SLR Consulting Limited |
|  | Name: Barry Carlson |
|  | Title: President/Manager |

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## Exhibit 99.6

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**CONSENT OF EXPERT**

December 29, 2025

Integra Resources Corp.

United States Securities and Exchange Commission

Ladies and Gentlemen:

**Re: Integra Resources Corp.**

I, Jeffrey Bickel, do hereby consent to:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1) the inclusion in this Current Report on Form 6-K of Integra Resources Corp. (the "Company") of the written disclosure in the Company's Material Change Report dated December 29, 2025 (the "MCR"), being filed with the United States Securities and Exchange Commission (the "SEC"); and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(2) the filing of this consent under cover of Form 6-K with the SEC and of the incorporation by reference of this consent and the MCR into, and the use of my name in, the Company's Registration Statement on Form F-10 (File No. 333-276530), and any amendments thereto, filed with the SEC.

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| | |
|:---|:---|
| By: | */s/ "Jeffrey Bickel* |
|  | Jeffrey Bickel, C.P.G. |

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## Exhibit 99.7

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**CONSENT OF EXPERT**

December 29, 2025

Integra Resources Corp.

United States Securities and Exchange Commission

Ladies and Gentlemen:

**Re: Integra Resources Corp.**

I, Keith Watson, do hereby consent to:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1) the inclusion in this Current Report on Form 6-K of Integra Resources Corp. (the "Company") of the written disclosure in the Company's Material Change Report dated December 29, 2025 (the "MCR"), being filed with the United States Securities and Exchange Commission (the "SEC"); and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(2) the filing of this consent under cover of Form 6-K with the SEC and of the incorporation by reference of this consent and the MCR into, and the use of my name in, the Company's Registration Statement on Form F-10 (File No. 333-276530), and any amendments thereto, filed with the SEC.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(3) I take responsibility for Sections "Updated Mineral Reserve Estimate", part of "Production Profile", part of "Mining", and part of the "Capital Cost Estimates", as per section "Data Verification".

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| | |
|:---|:---|
| By: | */s/ Keith Watson* |
|  | Keith Watson, P.Eng. |

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## Exhibit 99.8

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**CONSENT OF EXPERT**

December 29, 2025

Integra Resources Corp.

United States Securities and Exchange Commission

Ladies and Gentlemen:

**Re: Integra Resources Corp.**

I, Jay Nopola, do hereby consent to:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1) the inclusion in this Current Report on Form 6-K of Integra Resources Corp. (the "Company") of the written disclosure in the Company's Material Change Report dated December 29, 2025 (the "MCR"), being filed with the United States Securities and Exchange Commission (the "SEC"); and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(2) the filing of this consent under cover of Form 6-K with the SEC and of the incorporation by reference of this consent and the MCR into, and the use of my name in, the Company's Registration Statement on Form F-10 (File No. 333-276530), and any amendments thereto, filed with the SEC.

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| | |
|:---|:---|
| By: | */s/ "Jay Nopola"* |
|  | Jay Nopola, P.E. |

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## Exhibit 99.9

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**CONSENT OF EXPERT**

December 29, 2025

Integra Resources Corp.

United States Securities and Exchange Commission

Ladies and Gentlemen:

**Re: Integra Resources Corp.**

We, RESPEC Company LLC, do hereby consent to:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1) the inclusion in this Current Report on Form 6-K of Integra Resources Corp. (the "Company") of the written disclosure in the Company's Material Change Report dated December 29, 2025 (the "MCR"), being filed with the United States Securities and Exchange Commission (the "SEC"); and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(2) the filing of this consent under cover of Form 6-K with the SEC and of the incorporation by reference of this consent and the MCR into, and the use of my name in, the Company's Registration Statement on Form F-10 (File No. 333-276530), and any amendments thereto, filed with the SEC.

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| | |
|:---|:---|
| By: | */s/ Sterling Keith Watson* |
|  | RESPEC Company LLC<br>Name: Sterling Keith Watson<br>Title: Program Manager |

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