Carl M. Hennig

The family office formed from the sale of the Hennig family's founding stake in Oshkosh Truck Corporation, the specialty vehicle manufacturer now known as Oshkosh Defense. Carl M. Hennig incorporated the single-family office in Oshkosh, Wisconsin in 1989 to manage the proceeds of that liquidity event. The firm's investment posture reflects a direct reinvestment of industrial wealth into regional real assets.

Carl M. Hennig, Inc. operates an affiliated entity called Hennig Solar LLC, which develops utility-scale photovoltaic projects on family-owned land in Wisconsin. In August 2023, the entity was awarded a $2.8 million grant from the USDA's Rural Energy for America Program to build a 2.5-megawatt array in Winnebago County. This positions the firm as a developer-owner rather than a passive tax-equity investor.

The firm structures investments directly — there is no public evidence of fund commitments, fund-of-funds allocations, or placements into external GPs. The mortgage lending arm makes direct loans to regional real estate operators, the commercial property portfolio is directly owned, and the solar platform is developed on family-held land. This suggests a wholly direct-deal posture with no intermediary layer.

Yes. The firm maintains an RIA registration with the SEC under CRD number 110689, filed through the mortgage lending entity. The registration covers the private credit operations, not advisory services for external clients — it is a compliance structure to govern the direct lending book rather than a third-party wealth-management business.

The portfolio is anchored to the geography of the original Oshkosh Truck operations and the Hennig family's Wisconsin roots. All known real estate holdings — including Westowne Plaza and the Dollar General net-lease portfolio — are in Wisconsin, and the solar development footprint is within Winnebago County. The firm has not disclosed any out-of-state real estate or multi-regional expansion plans.