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Clerestory Advisors
Clerestory Advisors: Michael S. Sullivan's single-family office in Michigan, operating with zero public footprint since 2017.
Clerestory Advisors
Clerestory Advisors was established in Michigan in 2017 by Michael S. Sullivan as the entity through which his family's investable assets are managed. The office maintains no public website, publishes no strategy documents, and does not engage in external capital raising. Its formation corresponds with Sullivan's exit from operating-company roles, though the specific source of the family's underlying wealth is not publicly disclosed. The firm's structure — a lean, private vehicle with no outside investors — is consistent with a first-generation family office designed for capital preservation rather than institutional-scale deployment. The office's investment strategy cannot be publicly reconstructed in detail. Clerestory Advisors makes no regulatory filings that would reveal portfolio holdings, allocation ranges, or asset-class preferences. There are no public records of direct investments, fund commitments, co-investments with other family offices, or participation in venture or real-estate syndicates. The firm's geographic focus is presumed to be domestic given its Michigan incorporation and single principal, but even that is an inference. No portfolio companies, GP relationships, or co-investors have been reported. Team size and total assets under management are both undisclosed. The office appears to operate without a deep institutional bench — no investment committee, operating partners, or venture partners are named in available records. There are no known adjacent vehicles such as a philanthropic foundation, real-asset arm, or operating company. Clerestory does not appear in any known family-office network, co-investment club, or peer group directory. Its sole known professional is its founder and president. What distinguishes Clerestory structurally is its extreme opacity — not as a strategy choice advertised to peers, but as a posture. The firm has no digital presence, no press coverage, no conference appearances, and no profile in allocator databases. This is unusual even among single-family offices, most of which maintain at least a bare directory listing or a LinkedIn page for key staff. The absence of any outward-facing signal suggests either a deliberate privacy stance or a scale of operations that does not require vendor or counterparty visibility.
General information
Firm type
Single Family Office
Year founded
2017
AUM
Undisclosed
Location
Region
North America
Country
United States
City
Bloomfield Hills
Corporate office
Bloomfield Hills, MI, United States
Principals
Michael S. Sullivan
President
Frequently asked questions
Who makes investment decisions at Clerestory Advisors?
Michael S. Sullivan, the firm's president and founder, is the only named principal. No investment committee or additional decision-makers are disclosed publicly. The office appears to operate with Sullivan as the sole investment authority, consistent with a founder-led single-family office that has not brought in outside investment professionals.
Does Clerestory Advisors take outside capital or manage money for other families?
No. Clerestory Advisors is structured as a single-family office with no external clients. It does not register as an investment adviser, file Form ADV, or appear in any database of firms soliciting outside capital. Its corporate filings and operating posture are consistent with an entity managing capital exclusively for Michael Sullivan and his family.
What is Clerestory Advisors known to invest in?
Publicly, nothing. Clerestory Advisors has no disclosed portfolio positions, no announced direct investments, no known fund commitments, and no co-investment track record. The firm's investment strategy, asset allocation, and sector preferences are entirely opaque. This is unusual among family offices, which typically leave at least some transactional footprint through SEC filings, LP disclosures, or press coverage of portfolio-company involvement.
Where does the Sullivan family's wealth originate?
The source of the Sullivan family's wealth has not been publicly disclosed. Michael Sullivan's professional background and any prior operating-company exits that may have generated the family's capital are not documented in sources accessible to third parties. This distinguishes Clerestory from family offices whose wealth origin is well-known through corporate histories or public-company liquidity events.
How can an allocator or GP diligence Clerestory Advisors if it has no public footprint?
Through direct outreach only. Clerestory Advisors does not maintain a website, LinkedIn presence, or any channel through which external managers can learn about its investment preferences, mandate, or process. There is no evidence the firm accepts unsolicited deal flow or maintains relationships with third-party GPs. Any diligence would require a personal introduction to Michael Sullivan, whose receptivity to external engagement is unknown.
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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