Privacy is not a feature
It is the reason Steward exists. Every architectural decision — from how we store documents to how we handle access — begins with the question of who should be able to see something.
About Steward
Built because this problem deserved a careful answer.
Most tools built for wealth management are built for advisors, not for families. Steward is the exception: a private platform designed for the family itself — the people who hold the assets, carry the history, and will one day pass it on.
Why we built this
The story behind Steward.
Crossmarc, LLC was founded on a simple observation: families with meaningful wealth — multiple accounts, several entities, a document history stretching back decades — have no natural home for all of it. There are tools for advisors. There are tools for institutions. There is almost nothing built for the family itself.
The problem is not access to information. Most families can log into a dozen portals and find any given account balance. The problem is coherence. The net worth picture is assembled quarterly, by hand, in a spreadsheet. Documents live in filing cabinets or scattered across cloud drives with no structure connecting them to the entities they belong to. Access is either too open or impossible to manage cleanly.
Steward was built to answer that problem deliberately. A consolidated net-worth view that stays current without manual work. A document vault organised around entities, not folders. Access controls that are clean enough to actually use.
We named it Steward because that is the role. Not to generate returns — that is the advisor's job. To hold the picture together. To keep the record intact. To make sure the next generation inherits the history as well as the assets.
What we stand for
These are the principles that shape every decision we make — about the product, the infrastructure, and how we handle your data.
Complexity deserves clarity
Family wealth is structurally complex by nature. Steward does not add to that complexity. It renders it legible — without simplifying away the details that matter.
Built for the long term
A family office platform should outlast the people who set it up. Steward is designed for continuity: records that persist, access that transfers, and structure that survives transition.
The company
Crossmarc, LLC
Crossmarc is a small, deliberate software company. We build tools for contexts where trust is the primary currency — private families, considered wealth, long time horizons. We do not have a growth-at-all-costs mandate. We have customers whose data we are responsible for, and we take that responsibility seriously.
Steward is Crossmarc's primary product. It runs on an AI-first, serverless platform that we designed and built ourselves — because the infrastructure requirements of private wealth management do not fit neatly onto general-purpose application frameworks.
We are headquartered in the United States. Questions, partnership enquiries, and press contacts can reach us through the form below.