Single Family Office

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Titan Grove

Titan Grove was established in 2012 by Jeffrey Tannenbaum. His prior career included founding Fir Tree Partners in 1994 and serving as board chairman at...

Titan Grove logo

Titan Grove

Titan Grove was established in 2012 by Jeffrey Tannenbaum. His prior career included founding Fir Tree Partners in 1994 and serving as board chairman at multiple public and private companies. Wealth origin traces to hedge-fund activities at Fir Tree rather than an operating-company exit. The firm allocates across three asset classes: private equity for growth, acquisition or recapitalization; sustainable real estate focused on energy retrofits and tenant wellness; and impact-driven asset management vehicles. Confirmed positions include majority ownership of Higg Co after its carve-out from the Sustainable Apparel Coalition and founding ownership of NextEdge, which completed 4,000 small-cell deployments. Earlier holdings encompassed sPower, sold to AES Corp and AIMCo in June 2017 for $1.6 billion, and CiG Wireless, sold in May 2015 for $150 million. All activity remains within North America, primarily the United States. Titan Grove maintains no disclosed headcount or additional offices. It operates as a Certified B Corporation and sponsors the Titan Grove Foundation Inc. and Fir Tree Philanthropies. Jeffrey Tannenbaum also founded PACENation, the nonprofit that scaled Property Assessed Clean Energy financing. Mark Cirilli and Cisco DeVries serve as advisors with prior experience at MissionPoint Partners and Renew Financial respectively. Titan Grove differs from typical single-family offices through its requirement that every platform generate both predictable free cash flow and documented social or environmental outcomes. The structure relies on permanent balance-sheet capital rather than fund cycles, allowing direct control and repeated recapitalization without external limited-partner timelines.

General information

Firm type

Single Family Office

Year founded

2012

AUM

Undisclosed

Location

Region

North America

Country

United States

City

Katonah

Corporate office

Katonah, NY, United States

Principals

Jeffrey Tannenbaum

Founder

Mark Cirilli

Advisor

Cisco DeVries

Advisor

Sandi McLaughlin

Executive Assistant

Sector focus

Healthcare ServicesDigital HealthCircular EconomyClimateTechEdTechEnergy Transition & RenewablesSports & WellnessPropTech

Frequently asked questions

Who runs investment decisions at Titan Grove?

Jeffrey Tannenbaum directs investment decisions as founder. Mark Cirilli chairs the investment committee on select mandates and Cisco DeVries evaluates new platform ideas as Entrepreneur in Residence.

Does Titan Grove participate in fund commitments or only direct deals?

Titan Grove executes only direct ownership positions. It does not commit capital to third-party funds.

What investment stages does Titan Grove typically target?

The firm targets buyout and growth equity. It requires companies capable of generating $2 million to $25 million in sustainable operating profit with pre-tax margins above 10 percent.

How does Titan Grove source proprietary deal flow?

Titan Grove receives inbound inquiries from entrepreneurs and business owners. It also originates through networks built during the sPower and PACE initiatives.

Where does the underlying wealth come from?

Wealth originates from Jeffrey Tannenbaum's founding of Fir Tree Partners in 1994 and subsequent private-equity and hedge-fund activities.

Does Titan Grove maintain philanthropic structures, and how are they separated?

Titan Grove supports the Titan Grove Foundation Inc. and Fir Tree Philanthropies. These entities operate separately from the holding company and focus on energy policy and job creation.

Is Titan Grove structured as a single family office or does it operate more like a venture firm?

Titan Grove functions as a single-family office that owns and operates companies outright. It uses permanent capital and avoids venture-style fund vehicles.

Profile maintained by 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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