| SIGA LIMITED | Private company limited by shares | Dissolved |
| SIGA COMPANY LIMITED | Private company limited by shares | Live |
| SIGA CLOTHING CO., LIMITED | | Live |
| SHENZHEN SIGA TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| SIGA COMPUTERS LIMITED | Private company limited by shares | Dissolved |
| SIGA GLOBAL LIMITED | Private company limited by shares | Live |
| SIGA GROUP LIMITED | Private company limited by shares | Dissolved |
| CHANCE SIGA GROUP (HK) LIMITED | Private company limited by shares | Live |
| SIGA TECHNOLOGY HOLDINGS CO., LIMITED | Private company limited by shares | Live |
| Hong Kong Siga Electronics Co., Limited | Private company limited by shares | Live |
| SIGA ELECTRIC (HONGKONG) LIMITED | Private company limited by shares | Live |
| China Siga International Trade Co., Limited | Private company limited by shares | Live |
| FRANCE VALENTINO SIGA INT'L FASHION LIMITED | Private company limited by shares | Dissolved |
| SIGA MICROTECH LIMITED | Private company limited by shares | Live |
| Siga Packaging Material Limited | | Live |
| SIGA (CHINA) TRADING CO., LIMITED | Private company limited by shares | Live |
| Zhuofen Siga Trade Limited | Private company limited by shares | Live |
| SIGALLO ASIA LIMITED | Private company limited by shares | Dissolved |
| SigAlpha Limited | Private company limited by shares | Live |
| HK SIGAMNAAP LIMITED | Private company limited by shares | Live |
| SIGART PCB ELECTRONIC TECHNOLOGY COMPANY LIMITED | Private company limited by shares | Live |
| SIGAS FINANCE LIMITED | Private company limited by shares | Dissolved |
| SIGASIA TECHNOLOGIES LIMITED | Private company limited by shares | Dissolved |
| Sigastart Technology Limited | Private company limited by shares | Live |
| SIGATEC LIMITED | Private company limited by shares | Live |
| SIGBAND LIMITED | Private company limited by shares | Live |
| SIGD LIMITED | Private company limited by shares | Live |
| SIGE LIMITED | Private company limited by shares | Live |
| INTERNATIONAL SHENGDI SIGE BEAUTY CULTURE SPREAD LIMITED | Private company limited by shares | Live |
| ZHEJIANG SIGE ELECTRIC CO., LIMITED | Private company limited by shares | Dissolved |
| SIGECO CONSULTING LIMITED | Private company limited by shares | Live |
| Sigel Optoelectronics Co., Limited | Private company limited by shares | Live |
| SIGEM INTERNATIONAL LIMITED | Private company limited by shares | Live |
| Hong Kong Sigema Industrial Company Limited | Private company limited by shares | Live |
| SIGEMA (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| Hong Kong Sigema Retail Company Limited | Private company limited by shares | Live |
| SIGEN TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| Sigent Technology (Hong Kong) Limited | Private company limited by shares | Live |
| SHENZHEN SIGERA TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| Shenzhen Sigerui Technology Limited | | Live |
| SIGESSE ASIA LIMITED | Private company limited by shares | Live |
| ITALY SIGESTA CONSTRUCTION HARDWARE GROUP (ASIA) CO., LIMITED | Private company limited by shares | Dissolved |
| SIGET ELECTRONICS (HONG KONG) CO., LIMITED | Private company limited by shares | Live |
| SIGEX LIMITED | Private company limited by shares | Live |
| SIGFEN 1 PTE LIMITED | Private company limited by shares | Dissolved |
| SigFlow Technology Limited | Private company limited by shares | Live |
| WIN SIGHT COMPANY LIMITED | Private company limited by shares | Dissolved |
| ALL SIGHT LIMITED | Private company limited by shares | Dissolved |
| POP SIGHT LIMITED | Private company limited by shares | Dissolved |
| KEY SIGHT LIMITED | Private company limited by shares | Dissolved |
| MAX SIGHT LIMITED | Private company limited by shares | Live |
| SIGHT DIN LIMITED | Private company limited by shares | Dissolved |
| SIGHT WAY LIMITED | Private company limited by shares | Dissolved |
| SUN SIGHT LIMITED | Private company limited by shares | Dissolved |
| UP SIGHT LIMITED | Private company limited by shares | Dissolved |
| WIN SIGHT LIMITED | Private company limited by shares | Dissolved |
| JOY SIGHT LIMITED | Private company limited by shares | Dissolved |
| SEA SIGHT LIMITED | Private company limited by shares | Dissolved |
| SUN SIGHT LIMITED | Private company limited by shares | Dissolved |
| SIGHT LIMITED | Private company limited by shares | Dissolved |
| SKY SIGHT LIMITED | Private company limited by shares | Live |
| ART SIGHT LIMITED | Private company limited by shares | Live |
| JOY SIGHT LIMITED | Private company limited by shares | Live |
| SUN SIGHT LIMITED | Private company limited by shares | Dissolved |
| ALL SIGHT LIMITED | Private company limited by shares | Live |
| BIG SIGHT LIMITED | Private company limited by shares | Live |
| KEY SIGHT LIMITED | Private company limited by shares | Live |
| WIN SIGHT LIMITED | Private company limited by shares | Live |
| ACE SIGHT LIMITED | Private company limited by shares | Live |
| Vic Sight HK Limited | Private company limited by shares | Live |
| Sight Company Limited | Private company limited by shares | Live |
| Sight In Limited | | Live |
| AFFIRM SIGHT LIMITED | Private company limited by shares | Dissolved |
| AMPLE SIGHT LIMITED | Private company limited by shares | Live |
| ASIA SIGHT LIMITED | Private company limited by shares | Live |
| ASIA SIGHT HK LIMITED | Private company limited by shares | Live |
| BEAUTY SIGHT LIMITED | Private company limited by shares | Dissolved |
| BEAUTY SIGHT LIMITED | Private company limited by shares | Dissolved |
| BEAUTY SIGHT INVESTMENTS LIMITED | Private company limited by shares | Live |
| BEST SIGHT LIMITED | Private company limited by shares | Dissolved |
| BEST SIGHT LIMITED | Private company limited by shares | Live |
| BEST SIGHT INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| BEST SIGHT PROPERTIES LIMITED | Private company limited by shares | Dissolved |
| BUSINESS SIGHT LIMITED | Private company limited by shares | Dissolved |
| NEW SIGHT EYE CARE LIMITED | Company limited by guarantee | Live |
| CENTURY SIGHT LIMITED | Private company limited by shares | Dissolved |
| CENTURY SIGHT LIMITED | Private company limited by shares | Live |
| CHARMING SIGHT LIMITED | Private company limited by shares | Live |
| CLOUD SIGHT LIMITED | Private company limited by shares | Dissolved |
| CONCORD SIGHT LIMITED | Private company limited by shares | Dissolved |
| CREATIVE SIGHT LIMITED | Private company limited by shares | Live |
| SIGHT CREATIVE LIMITED | Private company limited by shares | Live |
| CREATIVE SIGHT LIMITED | Private company limited by shares | Live |
| FAR SIGHT DIGITAL LIMITED | Private company limited by shares | Live |
| DRAGON SIGHT LIMITED | Private company limited by shares | Dissolved |
| DRAGON SIGHT LIMITED | Private company limited by shares | Dissolved |
| DRAGON SIGHT LIMITED | Private company limited by shares | Live |
| SIGHT DRAGON LIMITED | Private company limited by shares | Live |
| DRAGON SIGHT LIMITED | | Live |
| EASY SIGHT LIMITED | Private company limited by shares | Dissolved |