| Full Name | Kim Si-hyeon |
| Stage Name | Sihyeon |
| Native Name | 김시현 |
| Birthday | August 5, 1999 |
| Age | 25 years and 8 months old |
| Zodiac Sign | Leo |
| Birthplace | Bundang-gu, Seongnam, Gyeonggi-do, South Korea |
| Height | 5’7″ (170 cm) |
| Weight | 112.4 lbs (51 kg) |
| Blood Type | B |
| MBTI | ENTP |
| Education | Neulpureun High School |
| Languages | Korean, English |
| Group | EVERGLOW |
| Social Media | Instagram: [@i_m_sihyeony] |