DRT Mfg. Co.

DRT Mfg. Co.

DRT Mfg. Co. is the private investment office of David R. Thompson, a Dayton, Ohio industrialist. The firm's capital base was originally generated through a precision-machining and manufacturing operation bearing the same name. Rather than selling the business, the Thompson family retained the corporate entity and reoriented it toward portfolio management, creating a structure where the family office's investment team evaluates deals with the same tolerance and engineering rigor the shop floor applied to aerospace and automotive components. The firm deploys capital across three primary asset classes: direct real estate, private operating-company equity, and structured credit. Real estate positions concentrate on industrial flex properties and Midwestern multifamily assets — property types where manufacturing-cycle cash flows provide a natural underwriting edge. On the private-equity side, DRT Mfg. Co. targets control or significant-minority stakes in lower-middle-market manufacturers, especially third-generation family-held shops facing succession transitions. The credit book is oriented toward asset-backed lending against machinery, tooling, and work-in-progress inventory — collateral classes that conventional lenders routinely misprice because they lack factory-floor appraisal capability, which DRT Mfg. Co. retains in-house. Geographic concentration sits heavily in Ohio, Indiana, and Michigan. The office operates leanly; headcount is undisclosed and likely small. The firm maintains no external website or LinkedIn presence, consistent with a family office that does not solicit co-investors or outside capital. No adjacent philanthropic foundation, club memberships, or public investment-committee rosters are available. In September 2024, the firm closed on a multi-tenant industrial park in Sidney, Ohio, adding approximately 80,000 square feet of warehouse and light-assembly space to the real estate portfolio (public record). This transaction continued a five-year pattern of aggregating industrial properties within a 90-minute drive of Dayton. What distinguishes DRT Mfg. Co. structurally is that it never separated the operating company from the investment office. Most manufacturing families either sell the business and redeploy proceeds through a newly formed family office or keep the operating company and the family office legally distinct. DRT's choice to house portfolio activities inside the original corporate shell — and to keep former plant-level engineers and controllers on the payroll as investment underwriters — creates an integrated entity where investment decisions are tested against the same production economics the family mastered over decades.