Form8.3AMGLITHIUMB.V.(ADIRECTWHOLLY-OWNEDSUBSIDIAR

FORM 8.3

PUBLIC OPENING POSITION DISCLOSURE/DEALING DISCLOSURE BY

A PERSON WITH INTERESTS IN RELEVANT SECURITIES REPRESENTING 1% OR

MORE

Rule 8.3 of the Takeover Code (the "Code")

1.

KEY INFORMATION

(a)

Full name of discloser:

Barclays PLC.

(b)

Owner or controller of interest and short

positions disclosed, if different from 1(a):

(c)

Name of offeror/offeree in relation to whose

AMG LITHIUM B.V. (A DIRECT WHOLLY-OWNED SUBSIDIARY OF AMG CRITICAL MATERIALS N.V.)

relevant securities this form relates:

(d)

If an exempt fund manager connected with an

offeror/offeree, state this and specify identity of

offeror/offeree:

(e)

Date position held/dealing undertaken:

28 May 2026

(f)

In addition to the company in 1(c) above, is the discloser making

YES:

disclosures in respect of any other party to the offer?

ZINNWALD LITHIUM PLC

2.

POSITIONS OF THE PERSON MAKING THE DISCLOSURE

(a)

Interests and short positions in the relevant securities of the offeror or offeree

to which the disclosure relates following the dealing(if any)

Class of relevant security:

EUR 0.02 ordinary

Interests

Short Positions

Number

(%)

Number

(%)

(1)

Relevant securities owned

and/or controlled:

816,802

2.28%

124,146

0.35%

(2)

Cash-settled derivatives:

133,113

0.37%

811,249

2.27%

(3)

Stock-settled derivatives (including options)

and agreements to purchase/sell:

0

0.00%

0

0.00%

TOTAL:

949,915

2.66%

935,395

2.62%

(b)

Rights to subscribe for new securities (including directors and other executive

options)

Class of relevant security in relation to

which subscription right exists

Details, including nature of the rights

concerned and relevant percentages:

3.

DEALINGS (IF ANY) BY THE PERSON MAKING THE DISCLOSURE

(a)

Purchases and sales

Class of relevant

Purchase/sale

Number of

Price per unit

security

securities

EUR 0.02 ordinary

Purchase

8,630

39.4387 EUR

EUR 0.02 ordinary

Purchase

2,984

40.0400 EUR

EUR 0.02 ordinary

Purchase

646

39.4678 EUR

EUR 0.02 ordinary

Purchase

288

39.2531 EUR

EUR 0.02 ordinary

Purchase

186

39.3178 EUR

EUR 0.02 ordinary

Purchase

176

39.6900 EUR

EUR 0.02 ordinary

Purchase

158

39.4600 EUR

EUR 0.02 ordinary

Purchase

152

39.6800 EUR

EUR 0.02 ordinary

Purchase

141

39.5055 EUR

EUR 0.02 ordinary

Purchase

140

39.1244 EUR

EUR 0.02 ordinary

Purchase

130

39.3085 EUR

EUR 0.02 ordinary

Purchase

121

39.6671 EUR

EUR 0.02 ordinary

Purchase

101

39.7450 EUR

EUR 0.02 ordinary

Purchase

94

39.4202 EUR

EUR 0.02 ordinary

Purchase

92

39.7800 EUR

EUR 0.02 ordinary

Purchase

68

39.4158 EUR

EUR 0.02 ordinary

Purchase

39

39.3400 EUR

EUR 0.02 ordinary

Purchase

13

39.2600 EUR

EUR 0.02 ordinary

Sale

4,258

39.4940 EUR

EUR 0.02 ordinary

Sale

2,806

40.0400 EUR

EUR 0.02 ordinary

Sale

1,965

39.2250 EUR

EUR 0.02 ordinary

Sale

538

39.5152 EUR

EUR 0.02 ordinary

Sale

531

39.4056 EUR

EUR 0.02 ordinary

Sale

369

39.7274 EUR

EUR 0.02 ordinary

Sale

267

39.1050 EUR

EUR 0.02 ordinary

Sale

197

39.1000 EUR

EUR 0.02 ordinary

Sale

183

39.4262 EUR

EUR 0.02 ordinary

Sale

179

40.0480 EUR

EUR 0.02 ordinary

Sale

158

39.2400 EUR

EUR 0.02 ordinary

Sale

124

39.5296 EUR

EUR 0.02 ordinary

Sale

114

39.3268 EUR

EUR 0.02 ordinary

Sale

109

39.6547 EUR

EUR 0.02 ordinary

Sale

88

39.5000 EUR

EUR 0.02 ordinary

Sale

26

39.2950 EUR

EUR 0.02 ordinary

Sale

24

39.2904 EUR

EUR 0.02 ordinary

Sale

19

39.4200 EUR

EUR 0.02 ordinary

Sale

17

39.3294 EUR

(b)

Cash-settled derivative transactions

Class of

Product

Nature of dealing

Number of

Price per

relevant

description

reference

unit

security

securities

EUR 0.02 ordinary

SWAP

Decreasing Short

197

39.1000 EUR

EUR 0.02 ordinary

SWAP

Decreasing Short

2

39.2250 EUR

EUR 0.02 ordinary

SWAP

Decreasing Short

50

39.2928 EUR

EUR 0.02 ordinary

SWAP

Decreasing Short

223

39.4870 EUR

EUR 0.02 ordinary

SWAP

Decreasing Short

4,258

39.4940 EUR

EUR 0.02 ordinary

SWAP

Decreasing Short

538

39.5152 EUR

EUR 0.02 ordinary

SWAP

Decreasing Short

2

40.0391 EUR

EUR 0.02 ordinary

SWAP

Increasing Short

270

39.2130 EUR

EUR 0.02 ordinary

SWAP

Increasing Short

288

39.2531 EUR

EUR 0.02 ordinary

SWAP

Increasing Short

52

39.3200 EUR

EUR 0.02 ordinary

SWAP

Increasing Short

8,630

39.4387 EUR

EUR 0.02 ordinary

SWAP

Increasing Short

141

39.5055 EUR

EUR 0.02 ordinary

SWAP

Increasing Short

125

39.7004 EUR

EUR 0.02 ordinary

SWAP

Increasing Long

159

39.4374 EUR

EUR 0.02 ordinary

CFD

Decreasing Short

2,090

39.1921 EUR

EUR 0.02 ordinary

CFD

Increasing Short

273

39.6774 EUR

(c)

Stock-settled derivative transactions (including options)

(i)

Writing, selling, purchasing or varying

Class

Product

Writing,

Number

Exercise

Type

Expiry

Option

of

description

purchasing,

of

price

date

money

relevant

selling,

securities

per unit

paid/

security

varying etc

to which

received

option

per unit

relates

(ii)

Exercise

Class of relevant

Product description

Exercising/ exercised against

Number of

Exercise price per

security

securities

unit

(d)

Other dealings (including subscribing for new securities)

Class of relevant

Nature of Dealings

Details

Price per unit (if

security

applicable)

4.

OTHER INFORMATION

(a)

Indemnity and other dealings arrangements

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 exempt principal trader making the disclosure and any party

to the offer or any person acting in concert with a party to the offer:

NONE

(b)

Agreements, arrangements or understandings relating to options or derivatives

Details of any agreement, arrangement or understanding, formal or informal, between

the person 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 of future acquisition or disposal of any relevant securities to which

any derivative is referenced:

NONE

(c)

Attachments

Is a Supplemental Form 8 (Open Positions) attached?

NO

Date of disclosure:

29 May 2026

Contact name:

Large Holdings Regulatory Operations

Telephone number:

020 3134 7213