About Sylvia Hastanan
Sylvia Hastanan is a chief executive officer, president, treasurer and secretary, director at Greater Good Healthcare.
Sylvia Hastanan first appears on SEC filings in 2022.
Experience
This experience comes from SEC filings. The years are when the filings name Sylvia Hastanan in the role, so the role may have started earlier or lasted longer.
Greater Good Healthcare Inc.
Chief Executive Officer, President, Treasurer and Secretary, director
2022 – 2025 · El Segundo, CA
Key Colleagues at Startups
The people Sylvia Hastanan works with at each company, as listed on that company's latest Form D.
Greater Good Healthcare Inc. · Form D, Dec 29, 2025
MG
Michael Grover
Chief Financial Officer and director
KM
Kristin Mowat
Director
DC
Derek Chao
Director
CD
Carol DeVol
Director
VL
Victor Lanio
Director
WP
Word Peake
Director
BF
Branden Fini
Director