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4DS memory ASX RELEASE 22 July 2021 4DS Memory Limited | ABN 43 145 590 110 Level 2 , 50 Kings Park Road , West Perth WA 6005 PO Box 271 , West Perth WA 6872 +61 8 6377 8043 | david@4dsmemory.com | www.4dsmemory.com QUARTERLY ACTIVITY REPORT AND APPENDIX 4C Highlights for the Quarter ended 30 June 2021 : Second Platform Lot & Third Non - Platform Lot wafers received Analysis of wafers well underway Renewed HGST Joint Development Agreement 4DS ' 100 % owned patent portfolio increased to 31 granted US patents No significant impact on 4DS ' operations due to COVID - 19 Added to the MSCI Global Index 4DS Memory Limited ( ASX : 4DS ) ( 4DS ) ( the Company ) , is pleased to provide its Quarterly Activity Report and Appendix 4C for the Quarter ended 30 June 2021 . Analysis of Second Platform and Third Non - Platform Lots Aquo asnjuosiada On 21 June 2021 4DS advised that : imec finalised the production of the Second Platform Lot of eighteen ( 18 ) wafers ; the Company took the opportunity to utilise spare capacity on imec's state - of - the - art production equipment to manufacture a Third Non - Platform Lot of twenty - three ( 23 ) wafers to ensure that the Company continued to build an extensive data set around the process parameters for its Interface Switching ReRAM technology ; the Second Platform Lot and Third Non - Platform Lot wafers fabricated at imec had arrived in Fremont for testing ; and Extensive and time - consuming analysis of both sets of wafers was underway and 4DS would report the results of both once they have been finalised between imec and 4DS . As expected , the analysis of both sets of wafers is extremely time - consuming due to the large amount of different test structures available on these two types of Lots . The Company is pleased to advise the results of both sets of wafers will be released by the middle of August 2021 barring any unforeseen equipment or other technical difficulties . 4DS would like to again extend its thanks to imec and Western Digital for their continued support and technical input . The results of the analysis of the Second Platform Lot and the Third Non - Platform Lot are expected to bring 4DS and its partners closer to realizing their strategic objective of commercialising the Company's technology . HGST Joint Development Renewal On 13 May 2021 , the Company reported that Western Digital Corporation subsidiary HGST renewed its Joint Development Agreement with 4DS for the 8th consecutive year until 30 June 2022 . Page 1 of 1