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: 29 Jun 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: 851,785 2.38% 109,321 0.31% | (2) Cash-settled derivatives: | 121,960 0.34% 850,425 2.38% | (3) Stock-settled derivatives (including options) | and agreements to purchase/sell: 0 0.00% 0 0.00% | TOTAL: 973,745 2.72% 959,746 2.68% | (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 7,885 32.2159 EUR | EUR 0.02 ordinary Purchase 5,329 32.2200 EUR | EUR 0.02 ordinary Purchase 3,245 32.0671 EUR | EUR 0.02 ordinary Purchase 2,309 32.2409 EUR | EUR 0.02 ordinary Purchase 1,810 32.2064 EUR | EUR 0.02 ordinary Purchase 1,792 32.2981 EUR | EUR 0.02 ordinary Purchase 1,515 32.1768 EUR | EUR 0.02 ordinary Purchase 1,115 32.1563 EUR | EUR 0.02 ordinary Purchase 971 32.1847 EUR | EUR 0.02 ordinary Purchase 932 32.1022 EUR | EUR 0.02 ordinary Purchase 414 31.9637 EUR | EUR 0.02 ordinary Purchase 276 32.4371 EUR | EUR 0.02 ordinary Purchase 276 32.6510 EUR | EUR 0.02 ordinary Purchase 250 32.3600 EUR | EUR 0.02 ordinary Purchase 231 32.2735 EUR | EUR 0.02 ordinary Purchase 193 32.1960 EUR | EUR 0.02 ordinary Purchase 176 32.3000 EUR | EUR 0.02 ordinary Purchase 136 32.4366 EUR | EUR 0.02 ordinary Purchase 109 32.0662 EUR | EUR 0.02 ordinary Purchase 105 32.4467 EUR | EUR 0.02 ordinary Purchase 105 31.9860 EUR | EUR 0.02 ordinary Purchase 66 32.5400 EUR | EUR 0.02 ordinary Purchase 62 31.9174 EUR | EUR 0.02 ordinary Purchase 58 32.3500 EUR | EUR 0.02 ordinary Purchase 55 32.5000 EUR | EUR 0.02 ordinary Purchase 53 32.3200 EUR | EUR 0.02 ordinary Purchase 49 32.4000 EUR | EUR 0.02 ordinary Purchase 46 32.4928 EUR | EUR 0.02 ordinary Purchase 44 31.8722 EUR | EUR 0.02 ordinary Purchase 25 32.1848 EUR | EUR 0.02 ordinary Purchase 24 32.0200 EUR | EUR 0.02 ordinary Purchase 22 32.4600 EUR | EUR 0.02 ordinary Purchase 20 32.2400 EUR | EUR 0.02 ordinary Purchase 18 32.2800 EUR | EUR 0.02 ordinary Purchase 16 31.8600 EUR | EUR 0.02 ordinary Purchase 15 32.2973 EUR | EUR 0.02 ordinary Purchase 7 32.2914 EUR | EUR 0.02 ordinary Purchase 3 32.1333 EUR | EUR 0.02 ordinary Purchase 2 32.2600 EUR | EUR 0.02 ordinary Purchase 1 32.0400 EUR | EUR 0.02 ordinary Purchase 1 32.3800 EUR | EUR 0.02 ordinary Purchase 1 32.4400 EUR | EUR 0.02 ordinary Purchase 1 32.4800 EUR | EUR 0.02 ordinary Sale 7,034 32.2200 EUR | EUR 0.02 ordinary Sale 6,490 32.0671 EUR | EUR 0.02 ordinary Sale 6,231 32.1454 EUR | EUR 0.02 ordinary Sale 2,309 32.2409 EUR | EUR 0.02 ordinary Sale 1,864 32.1021 EUR | EUR 0.02 ordinary Sale 1,115 32.2079 EUR | EUR 0.02 ordinary Sale 975 32.2702 EUR | EUR 0.02 ordinary Sale 828 31.9637 EUR | EUR 0.02 ordinary Sale 560 32.3261 EUR | EUR 0.02 ordinary Sale 366 32.4320 EUR | EUR 0.02 ordinary Sale 327 32.2193 EUR | EUR 0.02 ordinary Sale 272 32.4366 EUR | EUR 0.02 ordinary Sale 219 32.2783 EUR | EUR 0.02 ordinary Sale 218 32.0662 EUR | EUR 0.02 ordinary Sale 175 32.3453 EUR | EUR 0.02 ordinary Sale 169 32.2057 EUR | EUR 0.02 ordinary Sale 167 32.5586 EUR | EUR 0.02 ordinary Sale 149 32.1405 EUR | EUR 0.02 ordinary Sale 141 32.2190 EUR | EUR 0.02 ordinary Sale 138 32.6510 EUR | EUR 0.02 ordinary Sale 138 32.4371 EUR | EUR 0.02 ordinary Sale 125 32.3600 EUR | EUR 0.02 ordinary Sale 124 31.9174 EUR | EUR 0.02 ordinary Sale 107 32.0908 EUR | EUR 0.02 ordinary Sale 105 31.9860 EUR | EUR 0.02 ordinary Sale 88 32.3000 EUR | EUR 0.02 ordinary Sale 88 31.8722 EUR | EUR 0.02 ordinary Sale 66 32.5400 EUR | EUR 0.02 ordinary Sale 59 31.9228 EUR | EUR 0.02 ordinary Sale 55 32.5000 EUR | EUR 0.02 ordinary Sale 53 32.3200 EUR | EUR 0.02 ordinary Sale 49 32.4000 EUR | EUR 0.02 ordinary Sale 36 32.2800 EUR | EUR 0.02 ordinary Sale 24 32.0200 EUR | EUR 0.02 ordinary Sale 22 32.4600 EUR | EUR 0.02 ordinary Sale 20 32.0450 EUR | EUR 0.02 ordinary Sale 20 32.2400 EUR | EUR 0.02 ordinary Sale 16 32.1600 EUR | EUR 0.02 ordinary Sale 15 32.2973 EUR | EUR 0.02 ordinary Sale 15 32.5300 EUR | EUR 0.02 ordinary Sale 14 32.3285 EUR | EUR 0.02 ordinary Sale 14 32.3214 EUR | EUR 0.02 ordinary Sale 2 32.2600 EUR | EUR 0.02 ordinary Sale 1 32.4800 EUR | EUR 0.02 ordinary Sale 1 32.3800 EUR | EUR 0.02 ordinary Sale 1 32.0400 EUR | EUR 0.02 ordinary Sale 1 32.4400 EUR | EUR 0.02 ordinary Sale 1 31.9600 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 11 32.4109 EUR | EUR 0.02 ordinary CFD Decreasing Short 13 32.2192 EUR | EUR 0.02 ordinary CFD Increasing Short 138 32.6536 EUR | EUR 0.02 ordinary CFD Opening Long 136 32.4366 EUR | EUR 0.02 ordinary SWAP Decreasing Short 29 32.0717 EUR | EUR 0.02 ordinary SWAP Increasing Short 6,423 32.2159 EUR | EUR 0.02 ordinary SWAP Increasing Short 1,261 32.2159 EUR | EUR 0.02 ordinary SWAP Increasing Short 201 32.2159 EUR | EUR 0.02 ordinary SWAP Increasing Short 6 32.2133 EUR | EUR 0.02 ordinary CFD Decreasing Short 3,817 32.0503 EUR | EUR 0.02 ordinary CFD Decreasing Long 105 31.9860 EUR | EUR 0.02 ordinary SWAP Decreasing Short 141 32.2190 EUR | EUR 0.02 ordinary SWAP Increasing Short 811 32.1847 EUR | EUR 0.02 ordinary SWAP Increasing Short 160 32.1847 EUR | EUR 0.02 ordinary SWAP Increasing Short 25 32.1848 EUR | EUR 0.02 ordinary SWAP Increasing Short 62 32.3295 EUR | EUR 0.02 ordinary SWAP Decreasing Short 327 32.2193 EUR | EUR 0.02 ordinary SWAP Decreasing Short 14 32.3285 EUR | EUR 0.02 ordinary SWAP Decreasing Short 59 31.9229 EUR | EUR 0.02 ordinary SWAP Increasing Short 125 32.3600 EUR | EUR 0.02 ordinary SWAP Decreasing Short 149 32.1405 EUR | EUR 0.02 ordinary SWAP Decreasing Short 31 32.3390 EUR | EUR 0.02 ordinary SWAP Increasing Short 1 32.2000 EUR | EUR 0.02 ordinary SWAP Decreasing Short 44 31.8722 EUR | EUR 0.02 ordinary SWAP Decreasing Short 274 32.3759 EUR | EUR 0.02 ordinary SWAP Increasing Short 163 32.4122 EUR | EUR 0.02 ordinary SWAP Increasing Short 1,515 32.1768 EUR | EUR 0.02 ordinary SWAP Decreasing Short 6,231 32.1454 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: 30 Jun 2026 | Contact name: Large Holdings Regulatory Operations | Telephone number: 020 3134 7213 |
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