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SISUNG INVESTMENT MANAGEMENT SERVICES
Sisung Investment Management Services operates as the private investment arm of the Sisung family, whose wealth originates from the Sisung Group — a New...
SISUNG INVESTMENT MANAGEMENT SERVICES
Sisung Investment Management Services operates as the private investment arm of the Sisung family, whose wealth originates from the Sisung Group — a New Orleans-headquartered enterprise with roots in maritime services, offshore supply vessels, and marine transportation. The group's core operating businesses provide crew boats, platform supply vessels, and logistics support to energy producers in the Gulf of Mexico, a concentrated niche that has generated durable cash flows across commodity cycles. The family office deploys capital across real estate, private credit, and energy-adjacent opportunities, reflecting a strategy anchored in asset-intensive, cash-flowing businesses rather than speculative growth. The portfolio includes commercial real estate holdings in Louisiana and the broader Gulf South, direct lending to middle-market operators, and retained ownership in the group's vessel fleet. While individual deal terms remain private, the office favors structured, collateralized positions — a posture shaped by generations of operating in capital-heavy, cyclical industries. Team size and total deployment figures are not publicly disclosed. The investment function is integrated with the Sisung Group's operating headquarters in New Orleans, without satellite offices. The family maintains a low public profile, and the office does not participate in visible co-investment clubs or multi-family platforms. David Sisung leads both the operating company and the investment office, keeping capital allocation and business operations under unified leadership. The office's structural distinction is its embeddedness within an operating business — Sisung is not a detached allocator hiring third-party managers, but an owner-operator deploying reinvested operating profits. That architecture means investment decisions are informed by the family's real-time operating intelligence in maritime logistics and energy services, a sourcing advantage most generalist family offices cannot replicate.
General information
Firm type
Single Family Office
Year founded
—
AUM
Undisclosed
Location
Region
North America
Country
United States
City
New Orleans
Corporate office
New Orleans, LA, United States
Principals
David Sisung
President
Sector focus
Frequently asked questions
Where does the underlying wealth come from?
The Sisung family fortune was built through the Sisung Group, a New Orleans-based operator of offshore supply vessels and maritime services for the Gulf of Mexico energy industry. The group owns and operates crew boats and platform supply vessels that service deepwater rigs and production platforms, generating revenue under long-term charter contracts with major energy producers.
How is the investment office structured relative to the operating business?
Sisung Investment Management Services is not a standalone allocator — it is the investment arm embedded within the Sisung Group, with the same leadership overseeing both the maritime operating companies and the family's investment portfolio. Capital for new investments is sourced from operating-company cash flows rather than outside limited partners, giving the office a permanent-capital posture and no redemption pressure.
What does the office's real estate portfolio focus on?
The office's real estate investments concentrate on commercial properties in Louisiana and the broader Gulf South region. The strategy favors income-producing assets with long-term tenant profiles, consistent with the family's preference for asset-heavy, cash-flowing investments rather than development speculation.
Does the firm take outside capital or operate as a multi-family office?
No. Sisung Investment Management Services manages capital exclusively for the Sisung family. There is no indication the office has opened to external investors, joined co-investment clubs, or converted to a multi-family office structure.
Is the office directly involved in operating the vessel fleet?
The investment office and the operating company share leadership under David Sisung, meaning capital allocation and vessel-fleet management are not siloed. Investment decisions are informed by direct operating knowledge of maritime logistics, crew deployment, and energy-sector charter markets — an informational edge that a pure financial allocator would lack.
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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