Form 8.3 - AMG LITHIUM B.V.

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:

19 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:

814,413

2.28%

117,851

0.33%

(2)

Cash-settled derivatives:

123,198

0.34%

803,339

2.25%

(3)

Stock-settled derivatives (including options)

and agreements to purchase/sell:

0

0.00%

0

0.00%

TOTAL:

937,611

2.62%

921,190

2.58%

(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

21,887

35.8646 EUR

EUR 0.02 ordinary

Purchase

17,031

37.3400 EUR

EUR 0.02 ordinary

Purchase

13,376

35.6421 EUR

EUR 0.02 ordinary

Purchase

12,325

35.4200 EUR

EUR 0.02 ordinary

Purchase

3,800

36.1894 EUR

EUR 0.02 ordinary

Purchase

2,374

35.2171 EUR

EUR 0.02 ordinary

Purchase

2,221

35.2037 EUR

EUR 0.02 ordinary

Purchase

1,486

35.4214 EUR

EUR 0.02 ordinary

Purchase

1,292

35.7884 EUR

EUR 0.02 ordinary

Purchase

988

35.9771 EUR

EUR 0.02 ordinary

Purchase

847

35.4212 EUR

EUR 0.02 ordinary

Purchase

574

36.0658 EUR

EUR 0.02 ordinary

Purchase

485

36.0890 EUR

EUR 0.02 ordinary

Purchase

361

35.2504 EUR

EUR 0.02 ordinary

Purchase

285

36.0147 EUR

EUR 0.02 ordinary

Purchase

282

35.4129 EUR

EUR 0.02 ordinary

Purchase

236

36.0400 EUR

EUR 0.02 ordinary

Purchase

208

35.7255 EUR

EUR 0.02 ordinary

Purchase

182

36.0701 EUR

EUR 0.02 ordinary

Purchase

177

35.2854 EUR

EUR 0.02 ordinary

Purchase

132

36.1400 EUR

EUR 0.02 ordinary

Purchase

122

35.2200 EUR

EUR 0.02 ordinary

Purchase

113

35.4600 EUR

EUR 0.02 ordinary

Purchase

90

35.3400 EUR

EUR 0.02 ordinary

Purchase

75

35.3300 EUR

EUR 0.02 ordinary

Purchase

62

35.7354 EUR

EUR 0.02 ordinary

Purchase

55

35.3105 EUR

EUR 0.02 ordinary

Purchase

19

35.9000 EUR

EUR 0.02 ordinary

Purchase

19

36.1600 EUR

EUR 0.02 ordinary

Purchase

8

35.8600 EUR

EUR 0.02 ordinary

Purchase

5

35.1443 EUR

EUR 0.02 ordinary

Purchase

4

36.0600 EUR

EUR 0.02 ordinary

Purchase

3

35.8000 EUR

EUR 0.02 ordinary

Purchase

2

35.7000 EUR

EUR 0.02 ordinary

Sale

13,376

35.6421 EUR

EUR 0.02 ordinary

Sale

12,524

35.4200 EUR

EUR 0.02 ordinary

Sale

6,157

35.9025 EUR

EUR 0.02 ordinary

Sale

2,230

35.2053 EUR

EUR 0.02 ordinary

Sale

1,947

35.1916 EUR

EUR 0.02 ordinary

Sale

1,148

36.0658 EUR

EUR 0.02 ordinary

Sale

836

35.8094 EUR

EUR 0.02 ordinary

Sale

703

35.2791 EUR

EUR 0.02 ordinary

Sale

662

36.9600 EUR

EUR 0.02 ordinary

Sale

646

35.7884 EUR

EUR 0.02 ordinary

Sale

570

36.0147 EUR

EUR 0.02 ordinary

Sale

494

35.9771 EUR

EUR 0.02 ordinary

Sale

472

36.0400 EUR

EUR 0.02 ordinary

Sale

288

35.3988 EUR

EUR 0.02 ordinary

Sale

283

35.2998 EUR

EUR 0.02 ordinary

Sale

240

36.3235 EUR

EUR 0.02 ordinary

Sale

224

36.0023 EUR

EUR 0.02 ordinary

Sale

195

35.8863 EUR

EUR 0.02 ordinary

Sale

175

36.1600 EUR

EUR 0.02 ordinary

Sale

112

35.9300 EUR

EUR 0.02 ordinary

Sale

74

35.4186 EUR

EUR 0.02 ordinary

Sale

38

35.9000 EUR

EUR 0.02 ordinary

Sale

13

35.9830 EUR

EUR 0.02 ordinary

Sale

8

35.8644 EUR

EUR 0.02 ordinary

Sale

1

35.7000 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

74

35.4186 EUR

EUR 0.02 ordinary

SWAP

Decreasing Short

2,017

35.4242 EUR

EUR 0.02 ordinary

SWAP

Decreasing Short

200

35.6511 EUR

EUR 0.02 ordinary

SWAP

Decreasing Short

336

35.9782 EUR

EUR 0.02 ordinary

SWAP

Decreasing Short

521

36.0233 EUR

EUR 0.02 ordinary

SWAP

Decreasing Short

574

36.0658 EUR

EUR 0.02 ordinary

SWAP

Decreasing Short

137

36.1600 EUR

EUR 0.02 ordinary

SWAP

Decreasing Short

240

36.3235 EUR

EUR 0.02 ordinary

SWAP

Decreasing Short

539

37.8147 EUR

EUR 0.02 ordinary

SWAP

Increasing Short

5

35.1443 EUR

EUR 0.02 ordinary

SWAP

Increasing Short

55

35.3105 EUR

EUR 0.02 ordinary

SWAP

Increasing Short

235

35.3354 EUR

EUR 0.02 ordinary

SWAP

Increasing Short

5

35.4207 EUR

EUR 0.02 ordinary

SWAP

Increasing Short

847

35.4212 EUR

EUR 0.02 ordinary

SWAP

Increasing Short

1,486

35.4214 EUR

EUR 0.02 ordinary

SWAP

Increasing Short

3

35.8000 EUR

EUR 0.02 ordinary

SWAP

Increasing Short

21,887

35.8646 EUR

EUR 0.02 ordinary

SWAP

Increasing Short

494

35.9771 EUR

EUR 0.02 ordinary

SWAP

Increasing Short

10

36.0380 EUR

EUR 0.02 ordinary

SWAP

Increasing Short

132

36.1400 EUR

EUR 0.02 ordinary

CFD

Decreasing Short

662

36.9600 EUR

EUR 0.02 ordinary

CFD

Increasing Short

557

36.0025 EUR

EUR 0.02 ordinary

CFD

Increasing Short

17,031

37.3400 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:

20 May 2026

Contact name:

Large Holdings Regulatory Operations

Telephone number:

020 3134 7213