Guardian Metal Resources PLC Announces Director/PDMR Shareholding

LONDON, UK / ACCESS Newswire / July 21, 2026 / Guardian Metal Resources plc (NYSE.A:GMTL)(LON:GMET)(OTCQB:GMTLF), a strategic exploration company focused on tungsten in Nevada, USA, announces that it has been notified that Oliver Friesen has acquired 20,000 ordinary shares in the Company, and Michael Schlumpberger and Jason Starzecki have acquired 500 and 1,100 ADS’s respectively in the Company. Each ADS represents 5 ordinary shares of 1 pence in Guardian Metal Resources plc.

The resultant Directors interests in the ordinary shares are set out below:

Director

Shareholding prior to purchase

Number of shares acquired

Cost of shares acquired

Shareholding following purchase

% of issued share capital

Certain options(1)

Shareholding following purchase and exercise of certain options(1)

% of issued share capital following exercise of certain options(1)

Oliver Friesen

1,080,657

20,000

£29,749.50

1,100,657

0.565%

3,099,177

4,199,834

2.122%

Michael Schlumpberger

2,500

$5,005

2,500

0.001%

200,000

202,500

0.103%

Jason Thomas Starzecki

145,156

5,500

$10,494

150,656

0.077%

750,000

900,656

0.461%

(1) Shares that a person has the right to acquire within 60 days of this announcement.

For further information visit www.Guardianmetalresources.com or contact the following:

Guardian Metal Resources plc

Oliver Friesen (CEO)

Tel: +44 (0) 20 7583 8304

Cairn Financial Advisers LLP

Nominated Adviser

Sandy Jamieson/Jo Turner/Louise O’Driscoll

Tel: +44 (0) 20 7213 0880

Berenberg

Joint Broker and Financial Adviser

Jennifer Lee/Ivan Briechle

Tel: +44 (0) 20 3207 7800

Tamesis Partners LLP

Joint Broker

Charlie Bendon/Richard Greenfield

Tel: +44 (0) 20 3882 2868

Tavistock

Financial PR in the UK

Emily Moss/Josephine Clerkin

Tel: +44 (0) 7920 3150 /

+44 (0) 7788 554035

guardianmetal@tavistock.co.uk

Edelman Smithfield

Financial PR in the US

guardianmetal@edelmansmithfield.com

About Guardian Metal Resources

Guardian Metal Resources PLC (NYSE.A:GMTL)(LON:GMET)(OTCQB:GMTLF) is a strategic mineral exploration company driving the revival of U.S. mined tungsten production and strengthening America’s defense metal independence. The Company is advancing two co-flagship tungsten projects, Pilot Mountain, one of the largest undeveloped tungsten deposits in the U.S. and Tempiute, formerly America’s largest producing tungsten operation, both located in Nevada, one of the top-rated mining jurisdictions in the United States.

In July 2025, the U.S. Department of War (DoW) under Title III of the Defense Production Act of 1950, as amended, invested US$6.2M in Golden Metal Resources (USA) LLC, a wholly-owned subsidiary of Guardian Metal Resources PLC, to support the Pilot Mountain PFS. The Company completed a U.S. listing on the NYSE American on March 20, 2026.

Tungsten is a strategic metal critical to the defense, energy transition, technology, and industrial sectors. In the context of shifting geopolitical dynamics and tightening Chinese export restrictions, Guardian Metal is well positioned to play a leading role in re-establishing a secure, domestically mined U.S. supply chain for this vital defense metal.

Notification and public disclosure of transactions by persons discharging managerial responsibilities and persons closely associated with them.

1

Details of the person discharging managerial responsibilities / person closely associated

a)

Name

1. Oliver Friesen

2. Michael Schlumpberger

3. Jason Thomas Starzecki

2

Reason for the notification

a)

Position/status

1. Chief Executive Officer

2. Non-executive Director

3. Executive Chairman

b)

Initial notification /Amendment

Initial Notification

3

Details of the issuer, emission allowance market participant, auction platform, auctioneer or auction monitor

a)

Name

Guardian Metal Resources plc

b)

LEI

213800J4SKZAMUEPGW34

4

Details of the transaction(s): section to be repeated for (i) each type of instrument; (ii) each type of transaction; (iii) each date; and (iv) each place where transactions have been conducted

a)

Description of the financial instrument, type of instrument

Ordinary shares of 1p each

ADS’s – each ADS represents 5 ordinary shares of 1 pence in Guardian Metal Resources plc.

ADS’s ISIN: US4013821065

Identification code

ISIN: GB00BPQY8R36

b)

Nature of the transaction

Purchase of shares

c)

Price(s) and volume(s)

Price(s)

Volume(s)

1. 148p

2. $10.01 per ADS

3. $9.54 per ADS

1. 20,000 ordinary shares

2. 5,500 ordinary shares (1,100 ADS’s)

3. 2,500 ordinary shares (500 ADS’s)

d)

Aggregated information

– Aggregated volume

See above

– Price

e)

Date of the transaction

17 July 2026

f)

Place of the transaction

1. AIM

2. NYSE

3. NYSE

This information is provided by RNS, the news service of the London Stock Exchange. RNS is approved by the Financial Conduct Authority to act as a Primary Information Provider in the United Kingdom. Terms and conditions relating to the use and distribution of this information may apply. For further information, please contact rns@lseg.com or visit www.rns.com.

SOURCE: Guardian Metal Resources PLC

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