Meet the M+ Team
Sandra Eustache
With calm, positivity, and kindness, Sandra Eustache makes it easier for great teams to do great work.
Sandra Eustache
Executive Assistant
From Sesame Workshop to some of New York’s most esteemed financial firms, Sandra Eustache has built a career around making it easier for great teams to do great work, supporting executives in fast-paced, high-stakes environments where her strategic awareness and organizational superpowers aren’t just appreciated—they’re essential.
Sandra brings that same energy to M+, managing the flow of information, schedules, and priorities so that advisors can focus on what they do best. She approaches it all with the belief that how you do something matters just as much as what you do, weaving kindness, calm, and respect through undertakings both big and small and making sure colleagues and clients alike feel supported and confident.
Outside of work, Sandra values time with family and friends, often cooking, traveling, or reading to recharge. She also volunteers at her church, giving back to her community and staying connected to the values that guide her life and work.

