Tertiary Minerals plcLSE: TYM

Tertiary Minerals: Notification of Major Holdings

· Issued by Tertiary Minerals PLC via RNS

Summary by 6ix AI

First Equity Limited notified Tertiary Minerals PLC that its holding reached 5.985701% of the company's voting rights on October 30, 2026, after an acquisition or disposal of voting rights. The holding is 528000000 voting rights, all attached to shares.

Key details

  • The previous notified position was 3.815857% of voting rights.
  • The shares are registered in the name of Nortrust Nominees Limited, London, United Kingdom.
  • The ultimate controlling person is the Estate of William Black, through Armstrong Investments Limited of Douglas, Isle of Man, with First Equity Limited acting as its investment manager.
  • No voting rights are held through financial instruments such as options or other derivatives.
  • Tertiary Minerals PLC was notified on October 30, 2026.

6ix AI wrote this summary from the release below and checked it against the release.

Tertiary Minerals PLC
02 November 2026
 

TR-1: Standard form for notification of major holdings

1. Issuer Details

ISIN

GB0008854563

Issuer Name

TERTIARY MINERALS PLC

UK or Non-UK Issuer

UK

2. Reason for Notification

An acquisition or disposal of voting rights

3. Details of person subject to the notification obligation

Name

First Equity Limited

City of registered office (if applicable)

London

Country of registered office (if applicable)

United Kingdom

Name

City of registered office

Country of registered office

Estate of William Black

Armstrong Investments Limited

Douglas

Isle of Man

4. Details of the shareholder

Name

City of registered office

Country of registered office

Nortrust Nominees Limited

London

United Kingdom

5. Date on which the threshold was crossed or reached

30-Oct-2026

6. Date on which Issuer notified

30-Oct-2026

7. Total positions of person(s) subject to the notification obligation

% of voting rights attached to shares (total of 8.A)

% of voting rights through financial instruments (total of 8.B 1 + 8.B 2)

Total of both in % (8.A + 8.B)

Total number of voting rights held in issuer

Resulting situation on the date on which threshold was crossed or reached

5.985701

0.000000

5.985701

528000000

Position of previous notification (if applicable)

3.815857

0.000000

3.815857

8. Notified details of the resulting situation on the date on which the threshold was crossed or reached

8A. Voting rights attached to shares

Class/Type of shares ISIN code(if possible)

Number of direct voting rights (DTR5.1)

Number of indirect voting rights (DTR5.2.1)

% of direct voting rights (DTR5.1)

% of indirect voting rights (DTR5.2.1)

GB0008854563

528000000

0

5.985701

0.000000

Sub Total 8.A

528000000

5.985701%

8B1. Financial Instruments according to (DTR5.3.1R.(1) (a))

Type of financial instrument

Expiration date

Exercise/conversion period

Number of voting rights that may be acquired if the instrument is exercised/converted

% of voting rights

Sub Total 8.B1

8B2. Financial Instruments with similar economic effect according to (DTR5.3.1R.(1) (b))

Type of financial instrument

Expiration date

Exercise/conversion period

Physical or cash settlement

Number of voting rights

% of voting rights

Sub Total 8.B2

9. Information in relation to the person subject to the notification obligation

2. Full chain of controlled undertakings through which the voting rights and/or the financial instruments are effectively held starting with the ultimate controlling natural person or legal entities (please add additional rows as necessary)

Ultimate controlling person

Name of controlled undertaking

% of voting rights if it equals or is higher than the notifiable threshold

% of voting rights through financial instruments if it equals or is higher than the notifiable threshold

Total of both if it equals or is higher than the notifiable threshold

Estate of William Black

Armstrong Investments Limited

Estate of William Black

First Equity Limited as Investment Manager of Armstrong Inv Limited

5.985701

5.985701%

10. In case of proxy voting

Name of the proxy holder

The number and % of voting rights held

The date until which the voting rights will be held

If date does not apply, explain below

11. Additional Information

12. Date of Completion

30-Oct-2026

13. Place Of Completion

London

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