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Hammer and Company LLC
Hammer & Company LLC was founded in 1995 by William H. Hammer Jr., a member of the Hammer family whose wealth originated from Penn Virginia Corporation, a...
Hammer and Company LLC
Hammer & Company LLC was founded in 1995 by William H. Hammer Jr., a member of the Hammer family whose wealth originated from Penn Virginia Corporation, a coal and natural resources firm that dated to the 1880s. By 2005, the family had sold its controlling stake in Penn Virginia to fund the family office's independent investment operations. The firm is structured as a multi-family office but operates primarily as a discretionary asset manager deploying family capital across multiple asset classes. The firm's strategy spans private equity and venture capital, real estate and infrastructure, energy and natural resources, hedge funds, and private credit. It primarily makes direct investments and co-investments, often alongside institutional General Partners. Known co-investments include positions in companies such as CoreLogic (real estate data), Cushman & Wakefield (commercial real estate), and Energy Transfer Partners (midstream energy). Geographically, the firm focuses on the United States, with additional exposure to select markets in Western Europe and Canada. The firm does not publicly disclose committed capital figures but has reported at least $100 million in private equity direct investments across 30+ companies as of 2023. Hammer & Company does not market itself publicly and employs a lean team — approximately 15 investment professionals as of 2024, many with backgrounds from Goldman Sachs, Morgan Stanley, and Blackstone. The firm maintains a single office in San Francisco, California. Adjacent to the investment operations, the Hammer family operates the William H. Hammers Foundation, a philanthropic entity focused on education and medical research in Virginia, where the family's roots are based. In 2023, the firm participated in the recapitalization of a midstream energy pipeline project alongside Ares Management. The structural differentiator of Hammer & Company is its deliberate hybrid of family-office discretion and institutional-scale deal execution — it acts like a family office for its primary capital base but deploys in size and style indistinguishable from a middle-market private equity firm. This allows it to take long-term, concentrated positions without the fundraising cycle pressure of a traditional fund, while still accessing co-investment opportunities typically reserved for institutional LPs.
General information
Firm type
Multi Family Office
Year founded
1995
AUM
$1B – $5B (per public record, 2024)
Location
Region
North America
Country
United States
City
San Francisco
Corporate office
San Francisco, CA, United States
Principals
William H. Hammer Jr.
Founder & Chief Investment Officer
Andrew J. Hamer
Managing Director
Sector focus
Frequently asked questions
Who runs investment decisions at Hammer & Company?
William H. Hammer Jr., the founder and Chief Investment Officer, oversees all investment decisions. He is supported by a small group of managing directors, including Andrew J. Hamer, who focuses on real estate and infrastructure. The investment committee consists primarily of family members and senior external advisors, not institutional committees.
How does Hammer & Company source proprietary deal flow?
The firm sources deals through long-standing relationships with investment banks, middle-market private equity firms, and family offices. It often co-invests alongside institutional partners such as Ares Management and has been noted as a repeat investor in energy and real estate assets. The firm does not maintain a public deal sourcing platform and relies on its network of 10+ external GP relationships.
Is Hammer & Company structured as a single family office or multi-family office?
It is structured as a multi-family office that primarily manages the Hammer family's wealth, but it also serves a small number of additional families and institutional capital through separate accounts. The firm is not open to outside investors generally, and its capital base remains predominantly family-controlled.
What investment stages does Hammer & Company typically target?
The firm targets both growth-stage private equity and venture capital across its direct portfolio, with a focus on mature product or revenue-stage companies. In real estate and infrastructure, it prefers value-add and core-plus assets. It also invests in certain hedge funds and private credit funds for diversification.
Which sectors does Hammer & Company explicitly avoid?
The firm tends to avoid early-stage technology and healthcare startups, as well as consumer-facing private equity deals. Its documented portfolio shows a preference for energy, real estate, and business services rather than unproven or speculative assets.
Does Hammer & Company maintain philanthropic structures, and how are they separated?
Yes, the William H. Hammers Foundation, established by William H. Hammer Jr., focuses on education and medical research in Virginia. The foundation is managed independently from the family office's investment operations, though it receives funding from the family's capital returns.
What is Hammer & Company's known posture on co-investments alongside external GPs?
The firm actively co-invests alongside external GPs, particularly in the energy and real estate sectors. Known co-investments include periods alongside Ares Management and Brookfield Asset Management. The firm typically takes minority positions and does not seek control, preferring to partner with experienced operators.
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