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PTM.TO ·

Platinum Group Metals Ltd. Reports Third Quarter 2026 Results

Financials

838 – 1100 Melville Street

Vancouver, BC V6E 4A6

P: 604-899-5450

F: 604-484-4710

News Release No. 26-495

July 15, 2026

Platinum Group Metals Ltd. Reports Third Quarter 2026 Results

(Vancouver/Johannesburg) Platinum Group Metals Ltd. (PTM:TSX; PLG:NYSE American)

(“Platinum Group”, “PTM” or the “Company”) reports the Company’s financial results for

the third quarter of fiscal 2026 dated May 31, 2026, and provides an update and outlook. The

Company’s material property is the Waterberg project located on the North ern Limb of the

Bushveld Complex in South Africa (the “Waterberg Project”). The Waterberg Project is

planned as a fully mechanised, shallow, decline access platinum, palladium, rhodium and gold

(“4E” or “PGM”) mine, including by-product copper and nickel production, and is projected

to be one of the largest and lowest cost underground platinum group metals (“PGM” or

“PGMs”) mines globally. The Company’s near-term objectives are to advance the Waterberg

Project to a development and construction decision, including the arrangement of construction

financing and concentrate offtake agreements.

For details of the condensed consolidated interim financial statements (the “ Financial

Statements”) and Management’s Discussion and Analysis (“MD&A”) for the nine months

ended May 31, 2026, please see the Company’s filings on SEDAR+ (www.sedarplus.ca) or on

EDGAR ( www.sec.gov). Shareholders are encouraged to visit the Company’s website at

www.platinumgroupmetals.net. Shareholders may receive a hard copy of the complete

Financial Statements and MD&A from the Company free of charge upon request.

All amounts herein are reported in United States Dollars unless otherwise specified. The

Company holds cash in Canadian Dollars, United States Dollars, and South African Rand .

Changes in exchange rates may create variances in the cash holdings or results reported.

Project Ownership

As of May 31, 2026, the Waterberg Project is owned by Waterberg JV Resources (Pty) Ltd.

(”Waterberg JV Co.”), which is in turn owned by Platinum Group (37.42%), Mnombo Wethu

Consultants (Pty) Ltd. (“Mnombo”) (26.00%), HJ Platinum Metals Company Ltd. (“ HJM”)

(21.95%) and Impala Platinum Holdings Ltd. (“Implats”) (14.63%). Platinum Group holds

a further 12.97% indirect interest in Waterberg JV Co. through a 49.90% interest in Mnombo.

HJM was established in 2023 by Japan Organization for Metals and Energy Security

(“JOGMEC”) and Hanwa Co. Ltd. (“Hanwa”) as a special purpose company to hold and fund

their aggregate future equity interests in the Waterberg Project. The combined Waterberg JV

Co. ownership of JOGMEC (12.19%) and Hanwa (9. 76%) were consolidated into a 21.95%

PLATINUM GROUP METALS LTD. …2

interest held by HJM going forward, with JOGMEC to fund 75% of future equity investments

into HJM and Hanwa the remaining 25%.

Since early 2024, Implats has not funded their share of Waterberg Project cash calls and their

interest in Waterberg JV Co. has diluted by approximately 0.37%. Platinum Group has funded

Implats’ shortfall and the Company’s direct interest in Waterberg JV Co. has increased

concurrently with Implats’ dilution.

Recent Events

On May 31, 2026, Waterberg JV Co. and Discovery Drilling (Pty) Ltd. entered a contractor

agreement for the drilling of fourteen NQ boreholes for the purpose of obtaining 600 kg to

800 kg of T-Zone ore material for metallurgical testing purposes. Plugged boreholes from

earlier drilling programs are to be re -entered to reduce drilling costs , with two or three

deflections to then be completed in the mineralized T-Zone for each borehole. Drilling

commenced in mid-June and to date approximately 398 kgs of T-Zone ore material has been

collected from six completed boreholes and fourteen deflections. T-Zone samples are to be

logged, assayed, and processed for metallurgical test ing, including conventional flotation

testing and Jameson Cell flotation testing.

On May 8, 2026, at the Annual General Meeting of Waterberg JV Co., a supplemental budget

(the “Supplemental Budget”) of Rand 27.4 million (approx. $1.69 million) was approved by

shareholders for funding of the fiscal 2026 portion of a T-Zone Mining Study (the “T-Zone

Study”) aimed at assessing the viability of developing the Waterberg Project in stages,

beginning with a smaller, lower cost T-Zone mine. The Supplemental Budget had been

approved earlier by the board of directors of Waterberg JV Co. at a meeting held on March

27, 2026. A further Rand 22.69 million (approx. $1.40 million) to complete the T-Zone Study

is expected to be approved as a component of the upcoming fiscal 2027 budget, which

commences on September 1, 2026. The Supplemental Budget is in addition to the Stage Six

Budget described below. The T-Zone Study is being completed by a team of specialists

including engineering firm Stantec Consulting International Ltd. and South African engineering

firm DRA South Africa Projects (Pty) Ltd. Engineering oversight and project management are

being provided by South African engineering firm Fraser McGill (Pty) Ltd. (“Fraser McGill”).

On March 10, 2026, the Company entered into an Equity Distribution Agreement with BMO

Nesbitt Burns Inc. and Beacon Securities Limited (the “Canadian Agents”) and BMO Capital

Markets Corp. (the “U.S. Agent” and together with the Canadian Agents, the “Agents”) for

a new at-the-market equity program (the “2026 ATM”) to distribute up to $60.0 million (or

the equivalent in Canadian dollars) of Common Shares (the “Offered Shares”). The Offered

Shares may be issued by the Company to the public from time to time, through the Agents,

at the Company’s discretion until December 13, 2026. Offered Shares under the 2026 ATM

will be sold at the prevailing market price at the time of sale. The net proceeds of any such

sales will be used for staged development programs at the Waterberg Project and general,

corporate and administrative expenses.

PLATINUM GROUP METALS LTD. …3

On September 17, 2025, the board of directors of Waterberg JV Co. unanimously approved

a sixth stage of work in the amount of Rand 92.1 million (approximately $5.11 million at the

time) for fiscal year 2026 (“Stage Six Budget ”), to allow for the continuation of work

programs underway. The Stage Six Budget was subsequently approved by a consent

resolution of the requisite majority shareholders on September 26, 2025. The interim budget

covers the period ending August 31, 2026, and includes some components of a $21.0 million

pre-construction work program approved in principle for the Waterberg Project by the

directors and shareholders of Waterberg JV Co. on October 18, 2022 (the “Pre-Construction

Program”).

On May 29, 2025, Platinum Group reported the closing of a non-brokered private placement

of common shares of the Company (“Common Shares”) at a price of $1. 26 per Common

Share. An aggregate of 800,000 Common Shares were subscribed for and issued to existing

major beneficial shareholder, Hosken Consolidated Investments Limited (“ HCI”) through its

subsidiary Deepkloof Limited, resulting in gross proceeds to the Company of $1.0 million (the

“Private Placement”). Closing of the Private Placement allowed HCI to return to a 26%

interest in the Company at that time.

On September 16, 2024 , the Company reported positive results from an Independent

Definitive Feasibility Study Update ( the “ Waterberg DFS Update”) for the Waterberg

Project. The associated technical report entitled “Waterberg Definitive Feasibility Study

Update, Bushveld Igneous Complex, Republic of South Africa”, with an effective date of August

31, 2024, was filed on SEDAR+ on October 9, 2024. The Waterberg DFS Update was prepared

by independent qualified persons in accordance with Canadian National Instrument 43-101

Standards of Disclosure for Mineral Projects (“NI 43-101”) and Subpart 229.1300 and Item

601(b)(96) of the SEC's Regulation S -K ( collectively, “ S-K 1300”). The Waterberg DFS

Update included revised mineral resource and mineral reserve estimates. For details of the

Waterberg DFS Update see the Company’s news release dated September 16, 2024, the

MD&A, and the technical report referred to above.

Results For the Period Ended May 31, 2026

During the three month period ended May 31, 2026, a total of 1,059,233 Common Shares

were sold pursuant to the 2026 ATM at an average price of $1.90 for gross proceeds of $2.01

million before directly attributable costs of $0.05 million.

On December 5, 2024, the Company entered into an Equity Distribution Agreement with the

Agents for an at-the-market equity program (the “ 2025 ATM”) to distribute up to $50.0

million of Common Shares. Sales of Common Shares on the NYSE American commenced on

January 22, 2025, and to the completion of the 2025 ATM on January 23, 2026, the Company

sold an aggregate of 22,726,804 Common Shares at an average price of $2.20 for gross

proceeds of $50 million before deducting directly attributable costs paid to the Agents of $1.25

million. During the nine month period ended May 31, 2026, 13,785,310 Common S hares

were sold pursuant to the 2025 ATM at an average price of $2.67 for gross proceeds of $36.82

million before directly attributable costs of $0.92 million.

PLATINUM GROUP METALS LTD. …4

During the nine months ended May 31, 2026, the Company incurred a net loss of $2.88 million

(May 31, 2025 – net loss of $3.40 million). General and administrative expenses during the

period were $2.88 million (May 31, 2025 - $2.78 million). Share based compensation expense

was $1.01 million (May 31, 2025 - $0.79 million). The foreign exchange gain recognized in

the current period was $0.08 million (May 31, 2025 – gain of $0.06 million) due primarily to

the U.S. Dollar rising in value relative to the Canadian Dollar during the nine month period.

At May 31 , 202 6, finance income consisting of interest earned in the nine month period

amounted to $0.97 million (May 31, 2025 - $0.14 million). Basic and diluted loss per share

for the nine months ended May 31, 2026, was $0.02 (May 31, 2025 - $0.03).

Accounts receivable at May 31, 2026, totalled $0.21 million (August 31, 2025 - $0.08 million)

while accounts payable and other liabilities amounted to $ 0.77 million (August 31, 2025 -

$0.78 million). Accounts receivable were comprised primarily of value added taxes repayable

to the Company in South Africa. Accounts payable consisted primarily of accruals and

payables related to accounting costs, legal costs and project engineering and maintenance

costs on the Waterberg Project.

Total expenditures on the Waterberg Project, before partner reimbursements, for the nine

month period ended May 31, 2026, were approximately $1.8 million (May 31, 2025 - $1.6

million). At period end, $55.2 million (May 31, 2025 - $48.0 million) in accumulated net costs

were capitalized to the Waterberg Project. Total expenditures on the property since inception

to May 31 , 202 6, are approxima tely $92.9 million. For more information on mineral

properties, see Note 3 of the Financial Statements.

Waterberg Project Update

In addition to the T-Zone metallurgical drilling campaign described above, small scale physical

work activities recently commenced at the Waterberg Project and more work is planned ,

including w ork on initial road construction, construction water supply, and first stage

accommodation facilities. Progress is in varying stages, with first contractor site establishment

planned for August 2026. A construction manager to oversee activities was recently appointed

by Fraser McGill’s project office and is now on-site.

During March 2023 , Waterberg JV Co. assisted two local landowners to apply for Mining

Permits to mine aggregate for Waterberg JV Co.’s construction purposes. Waterberg JV Co.

has received responses on requests for quotation sent to contractors to start to mine, extract,

crush and stockpile the aggregate for use in road upgrade work proximal to the Waterberg

Project Mine Site. Tender documents are being assessed with a view to appoint a contractor

within the fourth fiscal quarter of 2026.

Waterberg JV Co. prepared applications to ESKOM Holdings (SOC) Limited (“Eskom”) for Cost

Estimate Letters and paid Eskom for a Budget Quotation for establishment/construction of a

temporary 22kV, 3 MVA electrical feed to the Waterberg Project Mine Site for use during

construction and development. Detailed engineering work is underway to determine the best

PLATINUM GROUP METALS LTD. …5

route for a ±30km powerline, associated equipment selection , and initial procurement

activities for construction once approved by Eskom.

The establishment of servitudes for power line routes and detailed planning and permitting

with Eskom for approximately a 70 km, 132MvA permanent line to the Waterberg Project is

ongoing. Power line environmental and servitude work is being completed by specialist

consultants and a high voltage engineering company, Kumena Consulting Pty Ltd. (previously

Private National Grid and TDx Power assisted Waterberg JV Co.), in coordination with Eskom.

Waterberg JV Co. has completed the next phase of certain necessary maintenance and water

infrastructure upgrades on the farm Early Dawn. Waterberg JV Co. is awaiting available dates

from the Capricorn District Municipality and Blouberg Local Municipality to formally hand over

this completed phase of the project . Waterberg JV Co. also intends to commence with the

necessary maintenance of certain water infrastructure on the farm Ketting. A contractor has

been appointed, and Waterberg JV Co. has received formal written approval from the

Capricorn District Municipality to commence with work. Waterberg JV Co. is still in the process

of obtaining the Community’s consent to commence with the necessary maintenance. Both of

these water infrastructure upgrades form a part of a Bulk Water Reticulation Local Economic

Development (“LED”) Programme under the Waterberg JV Co. Social & Labour Plan (“SLP”).

Site establishment for a Medical Clinic Upgrade LED Programme on the farm Goedetrouw has

been completed. A number of local community members have been appointed as contract

labour and the work commenced in early June 2026. The upgrades will cost in the region of

R2.2m (approx. $134,000).

The Company continues to work closely with regional and local communities and their

leadership on mine development plans to achieve optimal outcomes and best value to all

stakeholders. A new five year SLP commencing in 2026 has been developed with community

input and was submitted to the Department of Mineral and Petroleum Resources (“ DMPR”)

for review and approval in late 2025. Waterberg JV Co. submitted its annual SLP compliance

report and an annual Mining Charter compliance report to the DMPR on May 21, 2026.

The process to obtain surface lease agreements with both the Ketting and Goedetrouw

communities is ongoing. Draft surface lease agreements have been exchanged with

Goedetrouw and Ketting community representatives and their legal counsels. Formal

independent expert land valuations have been completed. An application for a water use

license and an application for land use rezoning are pending the completion of surface lease

agreements.

The recognized leadership and the majority of community members living on the farms

Goedetrouw, Ketting and Early Dawn have expressed their support for the Waterberg Mine.

Notwithstanding such support there are opponents. A Court Case filed in March 2024 by

certain members of the Early Dawn community seeking condonation and challenging the grant

of the Waterberg Mining Right in 2021 is unadjudicated. No mine infrastructure is planned

for location on the farm Early Dawn.

PLATINUM GROUP METALS LTD. …6

Two appeals to the inclusion of the farms Bonne Esperance and Too Late into the Waterberg

Mining Right were received in 2025, one from a member of a faction within the Early Dawn

community, and the other from an NGO called the Wildlife and Environment Society of South

Africa. The farms in question are down dip of the current mineral reserve at the Waterberg

Project, would only ever be accessed from underground, and would not likely be scheduled

for mining until approximately 50 years of mining have occurred.

A final draft Heritage Management Plan (“HMP”) was submitted to the South African Heritage

Resource Agency (“ SAHRA”) on March 9, 2026. SAHRA provided its final approval of the

HMP on April 14, 2026. One formal appeal had been received directly by Waterberg JV Co.

SAHRA advised that a panel to review the appeal was appointed on May 29, 2026, and a

hearing is scheduled to take place on July 21, 2026.

Outlook

Approximately $9.2 of the $21.0 million Pre-Construction Program described above remains

to be completed, including proposed work on initial road access, water supply, essential site

facilities, a first phase accommodation lodge, a site construction power supply and

advancement of the Waterberg SLP. Remaining components are being undertaken in phases

as incremental budgets are approved. The Stage Six Budget and the Supplemental Budget

allow for the continuation of work during the period ending August 31, 2026.

The Company and Waterberg JV Co. are assessing commercial alternatives for mine

development financing and concentrate offtake. As a part of the Company’s investigation of

smelting and base metal refining options, t he Company has engaged in discussions with all

South African integrated producers with a view to negotiating formal concentrate offtake

arrangements for the Waterberg Project. To date no terms have been agreed. As an

alternative, over the past three years the Company has studie d and proposed the

establishment of smelter and base metal refinery facilities located in either Saudi Arabia or

South Africa.

Before any processing of materials in Saudi Arabia could occur, South African Government

authorization for the export of concentrate or matte would be required and such approval has

been requested. Senior South African Government officials have stated their preference for

beneficiation to occur in South Africa. The Company is also investigating opportunities to

collaborate and co-invest with smaller furnace operators in South Africa who are interested

to modify and expand their existing operations such that the efficient processing of Waterberg

Project concentrate could be undertaken. In such a scenario the Waterberg Project could be

developed in stages so that smelting capacity could also be developed in stages.

The base case for mine development in the Waterberg DFS Update is focused first on lower

cost, bulk mining of F-Zone material from the F-Central deposit, followed by later mining from

the T-Zone. Although no decision has been made to alter the base case s cenario, given the

current price and outlook for gold, one concept being investigated in the T-Zone Study (as

described above) is to begin staged development at the Waterberg Project, first with decline

development into the T -Zone, followed by smaller scale T -Zone mining and then later

PLATINUM GROUP METALS LTD. …7

expansion into the F-Central deposit at the scale planned in the Waterberg DFS Update. As

compared to F -Central ore, proven and probable reserves for the T -Zone have a more

favourable 4E prill split of approx. 29% platinum (28% F -Central), 51% palladium (66% F -

Central), 1% rhodium (1% F -Central) and 19% gold (5% F -Central). T -Zone proven and

probable reserves also have a higher 4E grade of 3.84 g/t (2.68 g/t F-Central).

The F-Central deposit, with true mining widths (hanging wall to footwall) of up to 107 metres,

and with approximately 87% of production planned from mining widths more than 15 metres,

is very favourable to low -cost bulk mining. The T -Zone, with approximat ely 92% of

production planned from mining widths between 2.4 metres and 15 metres, and 8% from

areas up to 20 metres thick, also allows for bulk mining (being longitudinal longhole stoping),

albeit at a higher cost per tonne versus the F-Central deposit.

At current metal prices, increased revenue per tonne from mining the T -Zone would more

than offset higher mining costs, and may allow for a lower capex, staged development

approach as described above. The T-Zone Study is examining the financial impact of deferring

capital for power lines, paste backfill, milling capacity, and underground conveyors, while first

operating a T-Zone mine before using free cash flow to then develop a second stage F-Central

mine. T-Zone ore and waste can be trucked to surface for processing during initial mining

stages, allowing for a shortened ore build -up period and a reduced capital footprint in both

underground development and other underground infrastructure requirements. The use of

Jameson Cell high-intensity, compact flotation technology is also being investigated.

The Company continues to advance an initiative through Lion Battery Technologies Inc.

(“Lion”) using platinum and palladium in lithium battery technologies in collaboration with an

affiliate of Valterra Platinum Limited (previously Anglo American Platinum Limited)

(“Valterra”) and The Florida International University (“FIU”). The investment in Lion creates

a potential vertical integration with a broader industrial market development strategy to bring

new technologies to market utilising the catalytic properties of platinum and palladium . The

Company and Valterra are working towards the commercialisation and promulgation of the

developed technology and are currently in discussions with FIU to establish a pilot

manufacturing facility capable of prod ucing lithium sulphur pouch cells and Lion proprietary

cathodes for delivery to industrial users and manufacturers for testing. The investment

decision will be guided by a December 2025 report prepared by an independent third -party

commercial battery specialist assessing Lion’s technology, and the validation work completed

by the Battery Innovation Center, Inc. The independent specialists provided guidance on

potential pathways to commercialization and next steps and have been engaged to provide

ongoing direction and evaluation. For more detail, please see the Company’s MD&A and

current Annual Information Form (“AIF”) and Form 40-F.

Environmental, Social and Governance

In October 2025, Platinum Group received the 2025 annual Environmental, Social and

Governance (“ESG”) disclosure report from Digbee Ltd. (“Digbee”), a United Kingdom based

company that has developed an industry standard ESG disclosure framework for the mining

sector providing a right -sized, future looking set of frameworks against which they can

PLATINUM GROUP METALS LTD. …8

credibly disclose, track, compare and improve their ESG performance. For 2025, Platinum

Group achieved an overall score of BBB with a range of CC to AAA based on the information

provided. Digbee ESG has been developed in consultation with mining companies, ESG

specialists and capital providers and is endorsed by leading financial institutions, producing

mining companies and other industry stakeholders. Digbee’s reporting framework is aligned

with global standards, including the Equator Principles. For more details about the Company’s

2025 Digbee ESG Report please refer to the Company’s MD&A, AIF and Form 40-F.

Regulatory

As well as the discussions within this news release, the reader is encouraged to also see the

Company’s disclosure made under the heading “Risk Factors” in the Company’s current AIF

and Form 40-F.

Qualified Person

Rob van Egmond, P.Geo., a consultant geologist to the Company and a former employee, is

an independent qualified person as defined in NI 43-101. Mr. van Egmond has reviewed,

validated, and approved the scientific and technical information contained in this news release

and has previously visited the Waterberg Project site.

About Platinum Group Metals Ltd. and the Waterberg Project

Platinum Group Metals Ltd. is the operator of the Waterberg Project, a bulk underground PGM

and base metal deposit located in South Africa. The Waterberg Project was discovered by

Platinum Group and is being jointly developed with Mnombo, HJM and Implats.

On behalf of the Board of

Platinum Group Metals Ltd.

Frank R. Hallam

President, CEO and Director

For further information contact:

Kris Begic, VP, Corporate Development

Platinum Group Metals Ltd., Vancouver

Tel: (604) 899-5450 / Toll Free: (866) 899-5450

www.platinumgroupmetals.net

Disclosure

The TSX and the NYSE American have not reviewed and do not accept responsibility for the

accuracy or adequacy of this news release, which has been prepared by management.

This news release contains forward -looking information within the meaning of Canadian

securities laws and forward -looking statements within the meaning of U.S. securities laws

(collectively “forward -looking statements”). Forward-looking statements are typically