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:

25 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:

792,046

2.22%

123,546

0.35%

(2)

Cash-settled derivatives:

132,518

0.37%

785,368

2.20%

(3)

Stock-settled derivatives (including options)

and agreements to purchase/sell:

0

0.00%

0

0.00%

TOTAL:

924,564

2.59%

908,914

2.54%

(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

3,261

39.7605 EUR

EUR 0.02 ordinary

Purchase

3,066

39.6013 EUR

EUR 0.02 ordinary

Purchase

3,024

39.6000 EUR

EUR 0.02 ordinary

Purchase

570

39.8490 EUR

EUR 0.02 ordinary

Purchase

483

39.4716 EUR

EUR 0.02 ordinary

Purchase

401

39.5559 EUR

EUR 0.02 ordinary

Purchase

374

39.6150 EUR

EUR 0.02 ordinary

Purchase

244

39.5285 EUR

EUR 0.02 ordinary

Purchase

192

39.6400 EUR

EUR 0.02 ordinary

Purchase

120

39.4096 EUR

EUR 0.02 ordinary

Purchase

92

39.5160 EUR

EUR 0.02 ordinary

Purchase

87

39.3600 EUR

EUR 0.02 ordinary

Purchase

25

39.5800 EUR

EUR 0.02 ordinary

Purchase

23

39.5600 EUR

EUR 0.02 ordinary

Purchase

8

39.7600 EUR

EUR 0.02 ordinary

Purchase

6

39.4800 EUR

EUR 0.02 ordinary

Sale

3,298

39.6000 EUR

EUR 0.02 ordinary

Sale

2,480

39.5055 EUR

EUR 0.02 ordinary

Sale

1,533

39.6013 EUR

EUR 0.02 ordinary

Sale

310

39.4904 EUR

EUR 0.02 ordinary

Sale

285

39.8490 EUR

EUR 0.02 ordinary

Sale

188

39.3100 EUR

EUR 0.02 ordinary

Sale

187

39.6150 EUR

EUR 0.02 ordinary

Sale

184

39.5160 EUR

EUR 0.02 ordinary

Sale

174

39.3600 EUR

EUR 0.02 ordinary

Sale

122

39.5285 EUR

EUR 0.02 ordinary

Sale

100

39.6448 EUR

EUR 0.02 ordinary

Sale

98

39.5222 EUR

EUR 0.02 ordinary

Sale

95

39.3800 EUR

EUR 0.02 ordinary

Sale

80

39.6405 EUR

EUR 0.02 ordinary

Sale

46

39.5600 EUR

EUR 0.02 ordinary

Sale

13

39.6815 EUR

EUR 0.02 ordinary

Sale

12

39.4800 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

188

39.3100 EUR

EUR 0.02 ordinary

SWAP

Decreasing Short

95

39.3800 EUR

EUR 0.02 ordinary

SWAP

Decreasing Short

2,480

39.5055 EUR

EUR 0.02 ordinary

SWAP

Decreasing Short

23

39.5600 EUR

EUR 0.02 ordinary

SWAP

Decreasing Short

4

39.5992 EUR

EUR 0.02 ordinary

SWAP

Decreasing Short

70

39.6000 EUR

EUR 0.02 ordinary

SWAP

Increasing Short

122

39.5285 EUR

EUR 0.02 ordinary

SWAP

Increasing Short

401

39.5559 EUR

EUR 0.02 ordinary

SWAP

Increasing Short

1,138

39.6238 EUR

EUR 0.02 ordinary

SWAP

Increasing Short

3,261

39.7605 EUR

EUR 0.02 ordinary

CFD

Increasing Short

722

39.5394 EUR

EUR 0.02 ordinary

CFD

Increasing Short

285

39.8522 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:

26 May 2026

Contact name:

Large Holdings Regulatory Operations

Telephone number:

020 3134 7213