Tartisan Nickel Corp. Retains Tetra Tech to Complete PFS Gap Analysis for the Kenbridge Nickel-Copper Project, Northwestern Ontario

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Tartisan Nickel (OTCQX:TTSRF) has retained Tetra Tech Canada to complete a PFS Gap Analysis for the Kenbridge Nickel-Copper-Cobalt Project in Northwestern Ontario.

Tetra Tech will review the 2022 PEA, identify gaps versus Pre-Feasibility Study requirements, and propose a staged work program with cost and time estimates.

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Toronto, Ontario--(Newsfile Corp. - June 25, 2026) - Tartisan Nickel Corp. (CSE: TN) (OTCQX: TTSRF) (FSE: 8TA) ("Tartisan", or the "Company") is pleased to announce that it has engaged Tetra Tech⁠ Canada Inc. (Tetra Tech) to conduct an independent review of the existing Preliminary Economic Assessment (PEA) for the Kenbridge Nickel-Copper-Cobalt Project and deliver a structured Goal-Actual-Plan Analysis (GAP) identifying the technical, commercial, and compliance work required to advance the Kenbridge Project to the Pre-Feasibility Study (PFS) level.

The Tetra Tech Team will preform a PFS GAP Analysis and prepare a Technical Memorandum for Tartisan's Internal use that includes the outcomes of the following services:

• Assess the quality, completeness and assumptions of the current PEA
• Identify gaps relative to PFS requirements (technical, data, and test work)
• Prioritise gaps and recommend a staged work program with cost/time estimates to close them.

The review will be based on the information contained within the "Preliminary Economic Assessment of the Kenbridge Nickel Project - NI 43-101 & 43-101F1 technical Report, dated August 26, 2022", along with all relevant information on the Kenbridge Project to date.

Tetra Tech is a globally recognized engineering and consulting firm with extensive experience in mining, critical minerals, feasibility studies, mine engineering, environmental services, and project development. The firm provides mining consulting services ranging from conceptual evaluations through feasibility studies and detailed engineering.

Mark Appleby, President and CEO of Tartisan Nickel Corp., commented:

"Engaging Tetra Tech represents a significant milestone in the advancement of the Kenbridge Nickel-Copper-Cobalt Project. The Gap Analysis will provide a clear roadmap of the technical, engineering, environmental, and permitting work required to move Kenbridge toward a Pre-Feasibility Study. As demand for critical minerals continues to grow, Tartisan remains committed to unlocking the value of this high-grade nickel sulphide deposit located in the heart of Northwestern Ontario."

Appleby goes on to state: "We believe that completion of the PFS Gap Analysis will assist in optimizing resource expansion, engineering, metallurgical testing, environmental baseline studies, and project permitting as Kenbridge advances toward development".

About the Kenbridge Nickel-Copper-Cobalt Project

The Kenbridge Nickel-Copper Project is located near Sioux Narrows in the Kenora Mining District of Northwestern Ontario. Kenbridge is one of Canada's highest-grade undeveloped nickel-copper sulphide deposits and is strategically positioned to contribute to the North American critical minerals supply chain.

Qualified Person

The technical information in this news release has been prepared in accordance with Canadian regulatory requirements as set out in NI 43-101 and reviewed and approved by Dean MacEachern, P. Geo., an Independent Consultant to the Company and a Qualified Person as defined by NI 43-101.

About Tartisan Nickel Corp. Tartisan Nickel Corp. is a Canadian-based critical minerals exploration and development company which owns, the Kenbridge Nickel-Copper Project Sioux Narrows, Northwestern Ontario, the Sill Lake Silver Project near Sault Ste. Marie, Ontario as well as the Night Danger, Glatz Turtle Pond Project near Dryden, Ontario.

Tartisan Nickel Corp. common shares are listed on the Canadian Securities Exchange (CSE: TN) (OTCQX: TTSRF) (FSE: 8TA). Currently, there are 158,195,904 shares issued and outstanding (162,616,961 fully diluted).

For further information, please contact Mark Appleby, President & CEO, and a Director of the Company, at 416-804-0280 (info@tartisannickel.com). Additional information about Tartisan Nickel Corp. can be found at the Company's website at www.tartisannickel.com or on SEDAR+ at www.sedarplus.ca.

This news release may contain forward-looking statements including but not limited to comments regarding the timing and content of upcoming work programs, geological interpretations, receipt of property titles, potential mineral recovery processes, etc. Forward-looking statements address future events and conditions and therefore involve inherent risks and uncertainties. Actual results may differ materially from those currently anticipated in such statements.

The Canadian Securities Exchange (operated by CNSX Markets Inc.) has neither approved nor disapproved of the contents of this press release.

To view the source version of this press release, please visit https://www.newsfilecorp.com/release/302740

FAQ

What did Tartisan Nickel (TTSRF) announce about the Kenbridge project on June 25, 2026?

Tartisan Nickel announced it hired Tetra Tech Canada to perform a PFS Gap Analysis for the Kenbridge Nickel-Copper-Cobalt Project. According to Tartisan, the work includes reviewing the existing 2022 PEA, identifying gaps to PFS level, and outlining steps to advance the project.

What is the purpose of the Tetra Tech PFS Gap Analysis for Tartisan Nickel’s Kenbridge project (TTSRF)?

The purpose is to assess the current PEA and define what is needed to reach Pre-Feasibility Study standards. According to Tartisan, Tetra Tech will evaluate data quality, identify technical and compliance gaps, and recommend a staged work program with cost and time estimates.

How will the Tetra Tech engagement impact the Kenbridge Nickel-Copper-Cobalt Project for TTSRF shareholders?

The engagement is intended to clarify the technical and permitting path toward a future Pre-Feasibility Study. According to Tartisan, the Gap Analysis should help optimize resource expansion, engineering, metallurgical testing, environmental baseline studies, and project permitting as Kenbridge advances toward potential development.

What specific work will Tetra Tech perform for Tartisan Nickel’s Kenbridge project (TTSRF)?

Tetra Tech will independently review the existing PEA and complete a structured Goal-Actual-Plan Analysis. According to Tartisan, the team will assess PEA assumptions, identify missing technical and data requirements for PFS, prioritize gaps, and prepare a Technical Memorandum with a staged work plan.

Which technical report will Tetra Tech use to review Tartisan Nickel’s Kenbridge project (TTSRF)?

Tetra Tech will base its review on the “Preliminary Economic Assessment of the Kenbridge Nickel Project” technical report dated August 26, 2022. According to Tartisan, all relevant project information to date will also be considered during the PFS Gap Analysis and planning work.