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4DS memory ASX RELEASE 15 April 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 31 March 2021 : • Positive results from Second Non - Platform Lot . Commenced production of Second Platform Lot , which remains on schedule Results from this Second Platform Lot expected late in Q2 2021 • Finalised 2021 collaboration agreement with imec • 4DS ' 100 % owned patent portfolio increased to 30 granted patents • For personal use only No significant impact on 4DS ' operations due to COVID - 19 4DS Memory Limited ( ASX : 4DS ) ( 4DS ) ( the Company ) , is pleased to provide its Quarterly Activity Report and Appendix 4C for the Quarter ended 31 March 2021 . Positive Results from Second Non - Platform Lot On 1 February 2021 4DS confirmed that it had completed testing of the Second Non - Platform Lot . The data from the Second Non - Platform Lot : Confirmed that the Company has been able to repeat the results for each of the key memory characteristics ( speed , endurance and retention ) that were achieved with the First Non - Platform Lot ; Confirmed that significantly , 19 of the 21 device wafers were functional , a first for the Company ( the two nonfunctional wafers were the result of being manufactured outside the imec process window ) ; and Provided 4DS with further valuable insights with respect to how changes in key process parameters affect the key memory characteristics ; i.e. which process changes increase which memory characteristic . Second Platform Lot Production and Analysis Reporting Remain on Schedule On 1 February 2021 4DS also advised that the production of the Second Platform Lot commenced at imec in Belgium on 27 January 2021 . The Company is pleased to now report that the production of the Second Platform Lot remains on schedule with no technical or equipment issues to date . 4DS therefore expects to analyse these wafers in Q2 2021 with results available late in the same quarter as previously guided , subject to no equipment issues or new COVID - 19 impacts in either 4DS's USA or imec's Belgium facilities . 4DS would like to extend its thanks to imec and Western Digital for their continuing support and technical input . The results of the analysis of the Second Platform Lot is an important step for 4DS and its partners to pursue their strategic objective of commercialising the Company's technology . Page 1 of 1