Form 8(DD)-Zinnwald Lithium plc (Anton du Plessis)

(a) Full name of discloser:

Anton du Plessis

(b) Owner or controller of interests and short positions disclosed, if different from 1(a):

     The naming of nominee or vehicle companies is insufficient.  For a trust, the trustee(s), settlor and beneficiaries must be named.

N/A

(c) Name of offeror/offeree in relation to whose relevant securities this form relates:

     Use a separate form for each offeror/offeree

Zinnwald Lithium plc

(d) Status of person making the disclosure:

     e.g. offeror, offeree, person acting in concert with the offeror/offeree (specify name of offeror/offeree)

Person acting in concert with the offeree (Zinnwald Lithium plc)

(e) Date dealing undertaken:

23 July 2026

(f)  In addition to the company in 1(c) above, is the discloser making disclosures in respect of any other party to the offer?

If it is a cash offer or possible cash offer, state "N/A"

No

Class of relevant security:

1p Ordinary

Interests

Short positions

Number

%

Number

%

(1) Relevant securities owned and/or controlled:

13,182,778

2.34%

Nil

-

(2) Cash-settled derivatives:

Nil

-

Nil

-

(3) Stock-settled derivatives (including options) and agreements to purchase/sell:

Nil

-

Nil

-

     TOTAL:

13,182,778

2.34%

Nil

-

Class of relevant security in relation to which subscription right exists:

1p Ordinary

Details, including nature of the rights concerned and relevant percentages:

none

Class of relevant security

Purchase/sale

Number of securities

Price per unit

Class of relevant security

Purchases/ sales

Total number of securities

Highest price per unit paid/received

Lowest price per unit paid/received

Class of relevant security

Product description

e.g. CFD

Nature of dealing

e.g. opening/closing a long/short position, increasing/reducing a long/short position

Number of reference securities

Price per unit

Class of relevant security

Product description e.g. call option

Writing, purchasing, selling, varying etc.

Number of securities to which option relates

Exercise price per unit

Type

e.g. American, European etc.

Expiry date

Option money paid/ received per unit

Class of relevant security

Product description

e.g. call option

Exercising/ exercised against

Number of securities

Exercise price per unit

Class of relevant security

Nature of dealing

e.g. subscription, conversion

Details

Price per unit (if applicable)

1p Ordinary

Exercise of Restricted Stock Unit

7,465,876 ordinary shares of 1p each acquired through exercise

Nil

1p Ordinary

Exercise of Performance Share Unit

4,298,769 ordinary shares of 1p each acquired through exercise

£0.01

Details of any indemnity or option arrangement, or any agreement or understanding, formal or informal, relating to relevant securities which may be an inducement to deal or refrain from dealing entered into by the party to the offer or person acting in concert making the disclosure and any other person:

Irrevocable commitments and letters of intent should not be included.  If there are no such agreements, arrangements or understandings, state "none"

None

Details of any agreement, arrangement or understanding, formal or informal, between the party to the offer or person acting in concert making the disclosure and any other person relating to:

(i)  the voting rights of any relevant securities under any option; or

(ii) the voting rights or future acquisition or disposal of any relevant securities to which any derivative is referenced:

If there are no such agreements, arrangements or understandings, state "none"

None

Supplemental Form 8 (Open Positions)

NO

Supplemental Form 8 (SBL)

NO

Date of disclosure:

24/07/2026

Contact name:

Anton du Plessis

Telephone number:

info@zinnwaldlithium.com