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Platinum Group Metals Reports on Waterberg Definitive Feasibility Work

Corporate Updates

788 – 550 Burrard Street

Vancouver, BC V6C 2B5

P: 604-899-5450

F: 604-484-4710

News Release No. 17-345

June 15, 2017

Platinum Group Metals Reports on

Waterberg Definitive Feasibility Work

(Vancouver/Johannesburg) Platinum Group Metals Ltd. (PTM-TSX; PLG-NYSE MKT)

(“Platinum Group” or the “Company”) reports that planned Definitive Feasibility Study

(“DFS”) engineering work on the Waterberg Project is underway, including infill drilling,

resource modelling, mine plan optimization and infrastructure engineering. Engineering

and design work to reduce and improve underground development and optimize the

project scale and return will be part of the DFS.

The Waterberg Project represents one of the few significant undeveloped primary

palladium assets globally. The palladium market has been in a fundamental deficit for a

number of years and based on strong auto demand, limited mine supply and shrinking

stockpiles this deficit is expected to continue.

Detailed drilling targeting the higher grade, thicker portions of the deposit is in progress.

The objective of the drilling is to move portions of the deposit into the measured resource

category and to investigate the best grade portions for inclusion in early mine planning.

License and permitting application work is also underway. Work at Waterberg is wholly

funded at present by 28.35% JV partner JOGMEC (the Japan Oil, Gas and Metals National

Corporation) through an exploration earn-in commitment.

Details

During May 2017 infill drilling re -commenced at Waterberg with the objective of

increasing the confidence level of defined areas of T and F Reef from the inferred to the

indicated or measured level of confidence. A total of eight machines have been deployed

and approximately 11,230 meters have been drilled in this program to date. Assays for

the current drilling program are in process. Several holes drilled in late 2016 have

recently returned assays. Highlights include the following intercepts:

• North Super F Zone Borehole WE097D3 returning 45.1 meters of 4.64 g/t 3PGE,

including 16.6 meters of 7.28 g/t 3PGE;

• North Super F Zone Borehole WE096D0 returning 25.81 meters of 3.62 g/t

3PGE, including 6.15 meters of 4.89 3PGE; and

• T Zone Borehole WB211D2 returning 6.55 meters of 5.81 g/t 3PGE.

The true width of the shallow dipping (30° to 35°) mineralized zones that were sampled

are approximately 82% to 87% of the reported interval from the vertical intercept. For

the efficient application of bulk mining methods and for mine planning, vertical intercepts

of 3 meters or more are desirable. Increased grade thickness zones associated with

minor footwall troughs or bays along the 13 km long layered complex have recently been

PLATINUM GROUP METALS LTD. …2

identified. Infill drilling is confirming and adding definition to these zones, which will

allow them to be prioritized in an updated mine plan for the DFS.

As a result of its shallow depth, good grade and a fully mechanized mining approach, the

Waterberg Project has the opportunity to be a safe mine within the lowest quartile of the

Southern Africa PGE industry cost curve. The project resources consist of 60% palladium

(refer to “Independent Technical Report on the Waterberg Project Including Mineral

Resource Update and Pre-Feasibility Study – Project Areas located on the Northern Limb

of the Bushveld I gneous Complex, South Africa” dated effective October 17, 2016 and

filed on October 19, 2016 at www.sedar.com).

A table of results for the 2016 boreholes recently assayed, including the highlight holes

referred to above, follows:

BHID DEFLEC

-TION

WGS 84 LO 29

FROM TO

ZONE

LENGTH

Est.

True

Width

2PGE

+Au

PT PD AU CU NI

X Y m m m g/t g/t g/t g/t % %

WB211

D0

2 587 819 11 767

233.00 239.00 TZ 6.00 5.10 1.41 0.38 0.82 0.21 0.05 0.05

D1 232.17 237.50 TZ 5.33 4.53 2.42 0.65 1.50 0.27 0.09 0.07

D2 233.45 240.00 TZ 6.55 5.57 5.81 1.69 3.47 0.65 0.15 0.12

D3 231.43 237.71 TZ 6.28 5.34 3.99 0.95 2.47 0.58 0.14 0.09

WB212

D0

2 587 692 11 643

208.50 211.90 TZ 3.40 2.89 2.74 0.88 0.91 0.96 0.17 0.08

D1 208.00 211.26 TZ 3.26 2.77 3.83 1.20 1.22 1.42 0.14 0.06

WB213

D0

2 587 691 11 765

284.00 288.57 TZ 4.57 3.88 4.34 1.65 0.94 1.75 0.29 0.16

D1 285.00 290.00 TZ 5.00 4.25 1.40 0.50 0.26 0.65 0.13 0.08

D2 282.50 287.86 TZ 5.36 4.56 4.32 1.64 0.90 1.78 0.32 0.15

WB214

D0

2 587 942 11 891

252.00 260.50 TZ 8.50 7.23 0.36 0.13 0.13 0.10 0.02 0.02

D1 253.00 261.50 TZ 8.50 7.23 2.47 0.68 1.14 0.65 0.10 0.05

D2 251.62 260.50 TZ 8.88 7.55 1.78 0.65 0.89 0.24 0.05 0.04

WB215

D0

2 587 565 11 641

239.00 245.00 TZ 6.00 5.10 2.44 0.73 1.06 0.65 0.08 0.03

D1 239.00 245.00 TZ 6.00 5.10 3.71 1.32 1.78 0.61 0.10 0.03

WB216

D0

2 588 192 12 015

231.00 235.50 TZ 4.50 3.83 2.08 0.53 0.50 1.06 0.25 0.11

D1 231.00 235.50 TZ 4.50 3.83 2.49 0.59 0.49 1.41 0.31 0.12

D2 231.00 235.50 TZ 4.50 3.83 2.51 0.59 0.46 1.45 0.30 0.12

WB217

D0

2 588 311 12 235

224.50 227.50 TZ 3.00 2.55 4.74 1.62 0.46 2.67 0.73 0.24

D1 223.50 226.50 TZ 3.00 2.55 3.05 1.01 0.31 1.73 0.41 0.17

D2 223.00 225.97 TZ 2.97 2.52 2.42 0.82 0.24 1.36 0.36 0.14

WB218 D0 2 588 318 12 154 Replaced by dyke

WB219

D0

2 588 182 12 128

267.97 270.94 TZ 2.97 2.52 3.36 0.86 0.47 2.04 0.43 0.17

D1 267.95 271.00 TZ 3.05 2.59 2.84 0.73 0.57 1.53 0.32 0.13

D2 268.00 271.15 TZ 3.15 2.68 3.69 0.89 0.99 1.80 0.46 0.20

WB221 D0 2 587 755 11 830 297.00 298.50 TZ 1.50 1.28 2.24 0.67 1.15 0.42 0.08 0.06

WB222

D0

2 587 817 11 892

295.33 305.50 TZ 10.17 8.64 4.27 1.08 2.42 0.76 0.24 0.13

D1 295.00 303.50 TZ 8.50 7.23 4.42 1.14 2.66 0.61 o/s o/s

D2 298.38 308.00 TZ 9.62 8.18 4.70 1.15 2.82 0.72 o/s o/s

WB224 D0 2 587 832 12 019 370.50 385.50 TZ 15.00 12.75 3.48 1.07 1.69 0.72

PLATINUM GROUP METALS LTD. …3

WB225

D0

2 588 248 12 243

284.11 285.50 TZ 1.39 1.18 0.54 0.14 0.27 0.12 o/s o/s

D1 284.00 285.50 TZ 1.50 1.28 2.75 0.88 1.51 0.36 o/s o/s

D2 284.00 285.50 TZ 1.50 1.28 0.41 0.12 0.25 0.04 o/s o/s

WB226 D0 2 587 564 11 769 322.50 329.76 TZ 7.26 6.17 3.15 0.82 2.07 0.26

WE096

D0

2 582 883 7 705

245.15 270.96 NSF 25.81 21.94 3.62 0.78 2.67 0.17 0.12 0.21

D1 245 270.96 NSF 25.96 22.07 2.59 0.72 1.74 0.14 0.11 0.18

D2 245 269 NSF 24.00 20.40 2.60 0.71 1.76 0.14 0.11 0.20

WE097

D0

2 582 945 7 699

208 253.9 NSF 45.90 39.02 4.48 1.08 3.16 0.23 0.14 0.29

D1 207.5 253.4 NSF 45.90 39.02 4.32 1.15 2.94 0.22 0.14 0.28

D2 208 253.5 NSF 45.50 38.68 4.20 1.06 2.93 0.21 o/s o/s

D3 208 253.1 NSF 45.10 38.34 4.64 1.21 3.20 0.23 0.15 0.29

WE098 D0 2 583 066 7 755 183 205.5 NSF 22.50 19.13 0.51 0.18 0.32 0.02 0.03 0.09

WE096

D0

2 582 883 7 705

245.15 251.3 NSF_IN 6.15 5.23 4.89 1.29 3.32 0.28 0.17 0.30

D1 245 250.48 NSF_IN 5.48 4.66 3.65 1.00 2.46 0.19 0.13 0.24

D2 246.14 252 NSF_IN 5.86 4.98 1.55 0.41 1.04 0.09 0.08 0.19

WE097

D0

2 582 945 7 699

208 224.2 NSF_IN 16.20 13.77 7.30 1.88 5.01 0.41 0.23 0.41

D1 207.5 223.6 NSF_IN 16.10 13.69 6.31 1.67 4.30 0.34 0.20 0.38

D2 208 223.7 NSF_IN 15.70 13.35 6.31 1.56 4.43 0.32 o/s o/s

D3 208 224.6 NSF_IN 16.60 14.11 7.28 1.87 5.07 0.35 0.21 0.40

In the table above “NSF” refers to North Super F Zone, “NSF_IN” refers to a higher-grade

North Super Zone intercept within a borehole reported above and “TZ” refers to T Zone.

All of the above holes were drilled vertical or near vertical.

Base metals and other major elements were determined by multi acid digestion with

Inductively Coupled Plasma ("ICP") finish and PGEs were determined by conventional fire

assay and ICP finish. Setpoint Laboratories is an experienced ISO 17025 SANAS

accredited laboratory in assaying and have utilized a standard quality control system

including the use of standards. Platinum Group utilized a well -documented system of

inserting blanks and s tandards into the assay stream and has a strict chain of custody

and independent lab re-check system for quality control.

Important detailed infrastructure planning has commenced for the Waterberg Project,

including power line environmental and servitude w ork by Eskom and detailed

hydrogeological work to source ground water. Eskom has progressed electrical power

connection planning for a 65 km, 140MW line to the project.

Hydrological work so far has also identified several large-scale water basins that are likely

able to provide potable and mine process water for the Waterberg Project and local

communities. The Waterberg Project team is examining the possibility of assisting with

regional infrastructure to source potable water for municipal use while also sourcing and

providing mine process water. Meetings with local municipalities have been positive and

co-operative in tone and are encouraging for future development.

PLATINUM GROUP METALS LTD. …4

Outlook

Waterberg continues to advance with infill drilling and engineering work. Further results

are expected in the weeks ahead. Preparations are in progress for the filing of a mining

right. JOGMEC continues to fund 100% of the current costs at Waterberg.

General Corporate Update

As reported in a news release dated June 9, 2017, the technical team at the Company’s

Maseve Mine is focussed on improving performance during production ramp up, which

is behind schedule.

To accommodate the Company for delayed production ramp -up at the Maseve Mine, a

syndicate of lenders led by Sprott Resource Lending Partnership (collectively, “Sprott”)

and Liberty Metals & Mining Holdings, LLC (“LMM”) have agreed to amend their existing

loan facilities to the Company and provide waivers, in each case, until October 31, 2017,

with regard to minimum cash and working capital requirements, achievement of

production targets, certain events of default and the requirement to pay the lenders 50%

of the proceeds of equity and debt financings. Sprott and LMM are each to be paid a fee

of US $200,000 and US $400,00 0 respectively in consideration of the above

amendments, both at the same time upon the maturity or repayment of the Sprott

facility. The Liberty facility is in second secured position and is scheduled for repayment

subsequent to the Sprott facility. The Company highlights that additional working capital

will be required to continue its operations. Financing methods in consideration by the

Company include but are not limited to sale of assets, debt or equity. While the Company

believes that further fundi ng will be achieved, there is no assurance that such will be

concluded on terms acceptable to the Company, or at all.

The Company continues to work with BMO Capital Markets and Macquarie Capital to

review and assess corporate and asset level strategic alternatives as well as potential

further financing opportunities.

About Platinum Group Metals Ltd.

Platinum Group, base d in Johannesburg, South Africa and Vancouver, Canada, has a

successful track record with more than 20 years of experience in exploration, mine

discovery, mine construction and mine operations.

Formed in 2002, Platinum Group holds significant mineral rights and large-scale reserves

of platinum and palladium in the Bushveld Igneous Complex of South Africa, which is

host to over 70% of the world's primary platinum production. The Company is currently

focused on ramping up the Maseve Mine, its first near -surface platinum mine, to

commercial production.

Platinum Group has delineated new low cost, near surface reserves on the North Limb of

the Bushveld Complex on the Waterberg Project. Waterberg represents a new bulk type

of large scale, shallow low-cost platinum, palladium and gold deposit. Waterberg is one

of the only large scale dominantly palladium deposits in the world.

Qualified Person

R. Michael Jones, P.Eng., the Company’s President, Chief Executive Officer and a

significant shareholder of the Company, is a non-independent qualified person as defined

in National Instrument 43-101 Standards of Disclosure for Mineral Projects (“NI 43-101”)

PLATINUM GROUP METALS LTD. …5

and is responsible for preparing the technical information contained in this news release.

He has verified the data by reviewing the detailed information of the ge ological and

engineering staff and the Independent Qualified Person reports as well as visiting the site

regularly.

On behalf of the Board of

Platinum Group Metals Ltd.

“Frank R. Hallam”

CFO and Director

For further information contact:

R. Michael Jones, President

or Kris Begic, VP, Corporate Development

Platinum Group Metals Ltd., Vancouver

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

www.platinumgroupmetals.net

Disclosure

The Toronto Stock Exchange and the NYSE MKT LLC have not reviewed and do not accept

responsibility for the accuracy or adequacy of this news release, which has been prepared

by management.

This press 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

identified by words such as: believe, expect, anticipate, intend, estimate, plans, postulate

and similar expressions, or are those, which, by their nature, refer to future events. All

statements that are not statements of historical fact are forward -looking statements.

Forward-looking statements in this press release include, without limitation, statements

regarding anticipated or potential developments at the Waterberg Project including

drilling and the potential results thereof, the potential for increasing confidence in mineral

resources and upgrading categories of mineral resources, mine planning, potential water

sources, work on the DFS including engineering and design work to reduce and improve

underground development at Waterberg and to optimize the project scale and return,

and the filing of a mining right; working capital requirements; potential sales of assets,

debt or equity; the Company’s ability to obtain further funding; corporate and asset level

strategic alternatives; the potential economics of the Waterberg Project, if developed;

ramp-up and potential achievement of commercial production at the Maseve Mine; the

Company’s key objectives; and the Company’s plans and estimates regarding

exploration, studies, development, construction, production, cash flows and other

activities and developments. Statements of mineral resources and mineral reserves also

constitute forward -looking statements to the extent they represent estimates of

mineralization that will be encountered on a property and/or estimates regarding future

costs, revenues and other matters. Although the Company believes the forward-looking

statements in this press release are reasonable, it can give no assurance that the

expectations and assumptions in such statements will prove to be correct. The Company

cautions investors that any forward -looking statements by the Company are not

guarantees of future results or performance, and that actual results may differ materially

from those in forward -looking statements as a result of various factors, including risks

related to indebtedness; the Company’ s capital requirements may exceed its current

expectations; the uncertainty of cost, operational and economic projections; the ability

of the Company to negotiate and complete future funding transactions; variations in

PLATINUM GROUP METALS LTD. …6

market conditions; the nature, quality and quantity of any mineral deposits that may be

located; metal prices; other prices and costs; currency exchange rates; the Company’s

ability to obtain any necessary permits, consents or authorizations required for its

activities; the Company’s ability to produce minerals from its properties successfully or

profitably, to continue its projected growth, or to be fully able to implement its business

strategies; risks related to contractor performance and labour disruptions; and other risk

factors described in the Company’s Form 40 -F annual report, annual information form

and other filings with the Securities and Exchange Commission and Canadian securities

regulators, which may be viewed at www.sec.gov and www.sedar.com, respectively.

Cautionary Note to U.S. and other Investors

Estimates of mineralization and other technical information included or referenced in this

press release have been prepared in accordance with NI 43-101. The definitions of proven

and probable reserves used in NI 43-101 differ from the definitions in SEC Industry Guide

7. Under SEC Industry Guide 7 standards, a "final" or "bankable" feasibility study is

required to report reserves, the three-year historical average price is used in any reserve

or cash flow analysis to designate reserves and the primary environmental analysis or

report must be filed with the appropriate governmental authority. As a result, the

reserves reported by the Company in accordance with NI 43 -101 may not qualify as

"reserves" under SEC standards. In addition, the terms "mineral resource", "measured

mineral resource", "indicated mineral resource" and "inferred mineral resource" are

defined in and required to be disclosed by NI 43 -101; however, these terms are not

defined terms under SEC Industry Guide 7 and normally are not permitted to be used in

reports and registration statements filed with the SEC. Mineral resources that are not

mineral reserves do not have demonstrated economic viability. Investors are cautioned

not to assume that any part or all of the mineral deposits in these categories will ever be

converted into reserves. "inferred mineral resources" have a great amount of uncertainty

as to their existence, and great uncertainty as to their economic and legal feasibility. It

cannot be assumed that all or any part of an inferred mineral resource will ever be

upgraded to a higher category. Under Canadian securities laws, estimates of inferred

mineral resources may not form the basis of feasibility or pre -feasibility studies, except

in rare cases. Additionally, disclosure of "contained ounces" in a resource is permitted

disclosure under Canadian securities laws; however, the SEC normally only permits

issuers to report mineralization that does not constitute "reserves" by SEC standards as

in place tonnage and grad e without reference to unit measurements. Accordingly,

information contained or referenced in this press release containing descriptions of the

Company's mineral deposits may not be comparable to similar information made public

by U.S. companies subject to the reporting and disclosure requirements of United States

federal securities laws and the rules and regulations thereunder.