| ATRIUM REAL ESTATE INVESTMENT TRUST | 
| Name | MITSUI SUMITOMO INSURANCE COMPANY, LIMITED | 
| Address | 9, Kanda-Surugadai 3-Chome, Chiyoda-Ku 101-8011 Tokyo Japan. | 
| Company No. | 6010001008795 | 
| Nationality/Country of incorporation | Japan | 
| Descriptions (Class) | Ordinary Units | 
| No | Date of change | No of securities | Type of Transaction | Nature of Interest | 
| 1 | 15 Aug 2022 | 5,500,000 | Acquired | Deemed Interest | 
| Name of registered holder | Various names | |||
| Address of registered holder | Various addresses | |||
| Description of "Others" Type of Transaction | ||||
| Circumstances by reason of which change has occurred | Deemed Interest - Subscription of new placement units in Atrium Real Estate Investment Trust. | 
| Nature of interest | Deemed Interest | 
| Direct (units) | 0 | 
| Direct (%) | 0 | 
| Indirect/deemed interest (units) | 20,872,280 | 
| Indirect/deemed interest (%) | 8.5 | 
| Total no of securities after change | 20,872,280 | 
| Date of notice | 23 Aug 2022 | 
| Date notice received by Listed Issuer | 23 Aug 2022 | 
| Company Name | ATRIUM REAL ESTATE INVESTMENT TRUST | 
| Stock Name | ATRIUM | 
| Date Announced | 23 Aug 2022 | 
| Category | Change in the Interest of Substantial Shareholder Pursuant to Section 138 of CA 2016 | 
| Reference Number | CS2-23082022-00001 |