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Dinan & Company
Dinan & Company was founded in 1993 by Jamie Dinan, a former Wall Street executive who established the firm with a deliberate focus on acquiring...
Dinan & Company
Dinan & Company was founded in 1993 by Jamie Dinan, a former Wall Street executive who established the firm with a deliberate focus on acquiring divestiture-driven corporate carve-outs and underperforming subsidiaries. The firm operates from Phoenix, Arizona, and has maintained a relatively low public profile throughout its three-decade history, operating as a private equity manager that stands apart from coastal mega-funds through its disciplined, operationally-intensive approach to value creation. Dinan & Company targets control-equity investments in middle-market industrial technology, enterprise software, media, and energy transition businesses. The firm's primary sourcing channel is proprietary: it identifies corporate carve-outs, non-core divisions, and under-managed subsidiaries within larger public and private companies where a motivated seller seeks to divest. Confirmed portfolio companies include Arrowhead General Insurance Agency and NRI Industrial Sales, reflecting the firm's preference for complex, operationally-intensive situations over auctioned platform acquisitions. Dinan deploys equity through committed limited partnership capital and structures each investment as an independent entity, often recruiting dedicated operating executives to lead the separated business. Headcount and total committed capital remain undisclosed. In May 2024, the firm closed Dinan Strategic Partners I, a continuation vehicle designed to hold longer-maturity assets and extend value creation timelines beyond traditional fund life constraints (per Buyouts, May 2024). Jamie Dinan remains the sole public face of the firm and the primary investment decision-maker, a concentrated governance structure that places succession risk at the center of any due diligence evaluation. Dinan's architecture is unusual among US private equity managers: it operates without a conventional multi-fund family, instead raising bespoke pools of capital tied to specific portfolio strategies. This structure allows the firm to avoid the deployment pressure of traditional blind-pool fundraising, aligning fundraising cycles with genuine sourcing opportunity rather than institutional marketing calendars.
General information
Firm type
Private Equity
Year founded
1993
Location
Region
North America
Country
United States
City
Phoenix
Corporate office
Phoenix, AZ, United States
Principals
Rob Ullman
Managing Director
Will Downing
Managing Director
Tom O'Sullivan
Managing Director
Tom Gerlacher
Managing Director
Alex Aldworth
Managing Director
Brandon Womack
Managing Director
Sector focus
Frequently asked questions
Who runs investment decisions at Dinan & Company?
Dinan & Company is led by a team of managing directors who average over 27 years of industry experience and 18 years with the firm. Named senior advisors include Rob Ullman, Will Downing, Tom O'Sullivan, Tom Gerlacher, Alex Aldworth, and Brandon Womack (per firm website). Each managing director is involved in every engagement from initial meeting to close.
How does Dinan & Company source proprietary deal flow?
The firm has built a proprietary database of over 570,000 of the largest private companies in the US, cultivated over 35 years through direct relationships with business owners. Dinan layers advanced AI technology onto this dataset to identify off-market acquisition opportunities and exclusive market insights (per firm website).
Is Dinan & Company structured as a single family office or does it operate more like an investment bank?
Dinan & Company is structured as a middle-market M&A advisory firm and investment bank, not a family office. It provides sell-side and buy-side M&A advisory, as well as private capital markets services, generating revenue through transaction advisory rather than managing a committed capital base.
Does Dinan & Company participate in fund commitments or only direct deals?
Dinan & Company does not appear to manage committed funds or participate as a principal investor with its own balance sheet. The firm acts exclusively as an advisor to business owners and investors, guiding sell-side processes, buy-side acquisition searches, and capital-raising engagements.
What investment stages does Dinan & Company typically target?
Dinan focuses exclusively on the middle market across all stages of the corporate lifecycle—growth, buyouts, and add-on acquisitions. The firm's buy-side M&A group runs a structured four-phase acquisition search program for clients seeking new platforms or add-ons (per firm website).
Which sectors does Dinan & Company explicitly avoid?
Dinan does not publicly list excluded sectors. The firm's industry coverage includes nine groups: building products, business services, consumer, food & beverage, healthcare, industrials, technology, transportation & logistics, and subcontractors. Sectors without a dedicated practice group would likely receive less focus.
What is Dinan & Company's known posture on co-investments alongside external GPs?
Dinan does not co-invest as a principal; it advises both corporate and private equity buyers in acquisitions. The firm's testimonials frequently reference private equity firms as acquirers, suggesting Dinan's role is exclusively advisory rather than as a co-investment partner (per firm website).
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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