Form 8.3 AMG CRITICAL MATERIALS NV

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:

20 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:

788,845

2.21%

118,346

0.33%

(2)

Cash-settled derivatives:

126,810

0.35%

781,350

2.19%

(3)

Stock-settled derivatives (including options)

and agreements to purchase/sell:

0

0.00%

0

0.00%

TOTAL:

915,655

2.56%

899,696

2.52%

(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

9,090

35.6315 EUR

EUR 0.02 ordinary

Purchase

8,677

36.1400 EUR

EUR 0.02 ordinary

Purchase

4,851

35.4780 EUR

EUR 0.02 ordinary

Purchase

2,783

35.3453 EUR

EUR 0.02 ordinary

Purchase

2,049

35.8490 EUR

EUR 0.02 ordinary

Purchase

1,351

35.5465 EUR

EUR 0.02 ordinary

Purchase

526

35.4128 EUR

EUR 0.02 ordinary

Purchase

369

35.8637 EUR

EUR 0.02 ordinary

Purchase

336

35.4107 EUR

EUR 0.02 ordinary

Purchase

231

35.1643 EUR

EUR 0.02 ordinary

Purchase

138

35.1823 EUR

EUR 0.02 ordinary

Purchase

118

35.3420 EUR

EUR 0.02 ordinary

Purchase

107

35.6757 EUR

EUR 0.02 ordinary

Purchase

103

35.4547 EUR

EUR 0.02 ordinary

Purchase

97

35.8200 EUR

EUR 0.02 ordinary

Purchase

92

35.6600 EUR

EUR 0.02 ordinary

Purchase

86

36.1200 EUR

EUR 0.02 ordinary

Purchase

83

35.6700 EUR

EUR 0.02 ordinary

Purchase

24

35.7600 EUR

EUR 0.02 ordinary

Purchase

1

35.7000 EUR

EUR 0.02 ordinary

Purchase

1

35.2600 EUR

EUR 0.02 ordinary

Sale

26,096

35.8240 EUR

EUR 0.02 ordinary

Sale

9,501

35.4226 EUR

EUR 0.02 ordinary

Sale

8,677

36.1400 EUR

EUR 0.02 ordinary

Sale

4,767

35.6782 EUR

EUR 0.02 ordinary

Sale

3,977

35.4333 EUR

EUR 0.02 ordinary

Sale

849

35.9524 EUR

EUR 0.02 ordinary

Sale

727

35.8403 EUR

EUR 0.02 ordinary

Sale

389

35.1227 EUR

EUR 0.02 ordinary

Sale

373

35.5071 EUR

EUR 0.02 ordinary

Sale

245

35.5600 EUR

EUR 0.02 ordinary

Sale

221

35.2570 EUR

EUR 0.02 ordinary

Sale

217

35.1961 EUR

EUR 0.02 ordinary

Sale

194

35.1800 EUR

EUR 0.02 ordinary

Sale

192

35.4908 EUR

EUR 0.02 ordinary

Sale

138

35.1823 EUR

EUR 0.02 ordinary

Sale

120

35.3581 EUR

EUR 0.02 ordinary

Sale

114

35.2400 EUR

EUR 0.02 ordinary

Sale

107

35.4259 EUR

EUR 0.02 ordinary

Sale

106

35.7700 EUR

EUR 0.02 ordinary

Sale

84

35.6000 EUR

EUR 0.02 ordinary

Sale

70

36.1472 EUR

EUR 0.02 ordinary

Sale

50

35.2300 EUR

EUR 0.02 ordinary

Sale

40

35.0300 EUR

EUR 0.02 ordinary

Sale

24

35.7600 EUR

EUR 0.02 ordinary

Sale

21

35.1419 EUR

EUR 0.02 ordinary

Sale

15

35.4293 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

21

35.1419 EUR

EUR 0.02 ordinary

SWAP

Decreasing Short

194

35.1711 EUR

EUR 0.02 ordinary

SWAP

Decreasing Short

114

35.2400 EUR

EUR 0.02 ordinary

SWAP

Decreasing Short

595

35.2529 EUR

EUR 0.02 ordinary

SWAP

Decreasing Short

9,501

35.4226 EUR

EUR 0.02 ordinary

SWAP

Decreasing Short

20

35.6400 EUR

EUR 0.02 ordinary

SWAP

Decreasing Short

106

35.7700 EUR

EUR 0.02 ordinary

SWAP

Decreasing Short

77

35.7709 EUR

EUR 0.02 ordinary

SWAP

Decreasing Short

26,096

35.8249 EUR

EUR 0.02 ordinary

SWAP

Increasing Short

231

35.1643 EUR

EUR 0.02 ordinary

SWAP

Increasing Short

1

35.2600 EUR

EUR 0.02 ordinary

SWAP

Increasing Short

103

35.4547 EUR

EUR 0.02 ordinary

SWAP

Increasing Short

4,851

35.4786 EUR

EUR 0.02 ordinary

SWAP

Increasing Short

9,090

35.6315 EUR

EUR 0.02 ordinary

SWAP

Increasing Short

1

35.7000 EUR

EUR 0.02 ordinary

SWAP

Increasing Short

2,049

35.8490 EUR

EUR 0.02 ordinary

CFD

Decreasing Short

2,135

35.1314 EUR

EUR 0.02 ordinary

CFD

Decreasing Short

245

35.5600 EUR

EUR 0.02 ordinary

CFD

Decreasing Short

3,362

36.0945 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:

21 May 2026

Contact name:

Large Holdings Regulatory Operations

Telephone number:

020 3134 7213