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1906 Group
Susan Ross leads 1906 Group, the family office for Clark Construction founder A. James Clark, with a direct real estate portfolio in the Washington, D.C.
1906 Group
The 1906 Group manages assets for the family of the late A. James Clark, the engineer-turned-builder who founded Clark Construction Group and grew it into a dominant force in Mid-Atlantic infrastructure. Susan Williamson Ross, his daughter, leads the office as President and CEO, while her sister, Courtney Clark Pastrick, chairs the family's philanthropic vehicle. The construction enterprise remains a key source of ongoing wealth, now run by CEO Robert Moser, Jr. The family office concentrates its direct investment activity in mixed-use and residential real estate, with a pronounced geographic focus on Northern Virginia and Washington, D.C. Public record confirms ownership of The Boro, a multi-block mixed-use development in Tysons, Virginia, as well as the Ballston Quarter residential and retail components in Arlington. The office has also pursued redevelopment projects, including the St. Matthew's redevelopment in the District of Columbia. The strategy favors large-scale, transit-oriented properties in its home market. The 1906 Group operates alongside the A. James & Alice B. Clark Foundation, a separate entity that channels a significant portion of the family's wealth into charitable causes, with Courtney Clark Pastrick serving as Board Chair. Susan Ross holds board positions with the University of Virginia Foundation and the Washington Building Congress, embedding the family's capital and influence within the region's civic infrastructure. The firm further extends its reach through curated alternative assets, including a noted digital asset portfolio. What distinguishes the 1906 Group structurally is its deep integration with an operating business. For most single-family offices born of a liquidity event, the link to the wealth-generating asset is severed; here, Clark Construction remains under related-party leadership, producing a hybrid dynamic where a capital-deploying office coexists with an active operating company. This makes the 1906 Group less a post-exit allocator and more of a perpetuator of a legacy industrial fortune.
General information
Firm type
Single Family Office
Year founded
—
AUM
Undisclosed
Location
Region
North America
Country
United States
City
—
Corporate office
—
Principals
Susan Williamson Ross
President & CEO
Courtney Clark Pastrick
Board Chair, A. James & Alice B. Clark Foundation
Sector focus
Frequently asked questions
Who runs investment decisions at 1906 Group?
Susan Williamson Ross serves as President and CEO of the 1906 Group. She is the daughter of A. James Clark, the founder of Clark Construction Group and the source of the family's wealth. Her leadership includes oversight of the office's direct real estate portfolio, while her sister Courtney Clark Pastrick leads the family's foundation.
Where does the underlying wealth come from?
The wealth originates from A. James Clark, who founded Clark Construction Group, one of the largest privately held construction companies in the United States. The firm has been responsible for landmark infrastructure projects across the Mid-Atlantic, and the family's assets include ongoing interests in the still-active operating business.
Is 1906 Group structured as a single family office or does it operate more like a venture firm?
It is structured as a single family office, focused on preserving and growing the capital of the Clark family. It does not take outside capital or operate like a venture firm. The office concentrates on direct real estate ownership, with additional holdings in alternative assets such as a digital asset portfolio.
What investment stages or asset classes does 1906 Group typically target?
The firm's primary investment activity is in direct real estate, specifically large-scale mixed-use, residential, and commercial developments in the Washington, D.C. metro area. Confirmed holdings include The Boro in Tysons, Virginia, and Ballston Quarter in Arlington. Beyond real estate, the office manages alternative assets including a historical scripophily collection and photography.
How is 1906 Group related to Clark Construction?
Clark Construction is the source of the family's wealth, founded by A. James Clark. The operating company is now run by Robert Moser, Jr., while Clark's daughter, Susan Ross, runs the family office that manages the real estate and investment assets generated by that enterprise. The two entities operate in parallel under a related-party structure.
Does the firm maintain philanthropic structures, and how are they separated?
Yes, the A. James & Alice B. Clark Foundation serves as the primary philanthropic vehicle. It is governed separately from the investment office, with Courtney Clark Pastrick serving as Board Chair. The foundation focuses on educational and community initiatives, keeping charitable distributions outside the 1906 Group's investment mandate.
Which geographic markets does 1906 Group focus on?
The office concentrates overwhelmingly on the Washington, D.C. metropolitan area, including Northern Virginia. Public records show holdings in Tysons, Arlington, and the District of Columbia. There is no public evidence of international or expansion-market real estate activity.
Profile maintained by Altss using OSINT (open-source intelligence), regulatory filings, licensed data partners, and verified direct submissions. Read the methodology. Last updated: . Continuous refresh with full update cycles at least every 30 days.
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