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Tamar Securities, LLC
Tamar Securities, LLC is a single-family office founded in 1986 by Frederick B.
Tamar Securities, LLC
Tamar Securities, LLC is a single-family office founded in 1986 by Frederick B. Iseman, using the family fortune built by his father Morton Iseman's New York real estate firm Iseman Realty. The firm operates from New York and manages multigenerational capital for the Iseman family. The firm allocates across real estate, private credit, hedge funds, and venture capital. Tamar has invested in direct real estate holdings, including commercial properties in the New York metropolitan area, and has participated in credit-oriented hedge fund strategies. It also supports early-stage companies through venture investments, with a focus on technology and financial services. Geographic footprint centers on North America, with select international exposure. Tamar Securities maintains a lean, privacy-conscious operation. No public AUM or deal count is disclosed. The firm has no known philanthropic foundation or adjacent vehicles publicly registered. It remains one of the few family offices founded in the 1980s still operating under its original leadership and mandate. The structural differentiator is its founder-led, multi-asset approach with no external capital — a pure single-family office that has not transitioned into an RIA or multi-family structure. Its longevity (over 35 years) and lack of public profile reflect Iseman's preference for operational discretion.
General information
Firm type
Single Family Office
Year founded
1986
AUM
Undisclosed
Location
Region
North America
Country
United States
City
New York
Corporate office
New York, NY, United States
Principals
Frederick B. Iseman
Founder and President
Sector focus
Frequently asked questions
Who runs investment decisions at Tamar Securities?
Frederick B. Iseman, founder and president, oversees all investment decisions. The firm has maintained the same leadership structure since 1986. No other investment committee members are publicly identified.
How does Tamar Securities source proprietary deal flow?
Tamar relies on direct relationships built over decades in New York real estate and finance. The firm does not use external placement agents or public fundraising. Deal flow is primarily through personal networks and long-standing partnerships.
Is Tamar Securities structured as a single family office or does it operate more like a venture firm?
Tamar is a pure single-family office. It does not manage capital for outside investors and operates with a small, private team. Its structure has not evolved into a multi-family office or RIA.
Does Tamar Securities participate in fund commitments or only direct deals?
The firm has been documented investing in hedge funds and private credit funds, alongside direct real estate and venture holdings. It uses both fund commitments and direct co-investments.
What investment stages does Tamar Securities typically target?
Tamar targets a range of stages: early-stage venture, growth equity, and direct real estate assets. In credit, it invests in both liquid hedge fund strategies and private credit funds.
Which sectors does Tamar Securities explicitly avoid?
Public filings and public records do not indicate any explicit sector exclusions. The firm appears to avoid highly speculative or non-traditional asset classes based on its portfolio history.
How is Tamar Securities related to the Iseman family?
Tamar Securities is the single-family office for the Iseman family. Frederick Iseman's father, Morton Iseman, built Iseman Realty into a major New York commercial real estate firm. Tamar manages multigenerational wealth from that base.
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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