Sami Mnaymneh has been making private equity investments in the middle market since 1993. Most firms that have been around that long have either sold, merged, or drifted upmarket to compete for larger deals. H.I.G. Capital has done none of those things. It has grown to $70 billion in assets under management while maintaining the same mid-sized company focus that Mnaymneh and co-founder Tony Tamer established at the outset.
That consistency is worth examining. Middle market private equity is operationally demanding — deals are smaller, diligence is harder, and portfolio companies need more active management than the kind of passive oversight that works at scale in large-cap buyouts. H.I.G. has staffed for that reality, building a team of more than 500 investment professionals with operational, consulting, technology, and financial management backgrounds.
Credentials and Early Career of Sami Mnaymneh
Mnaymneh holds degrees from two of the country’s most demanding academic programs. He graduated first in his class at Columbia University with a B.A. summa cum laude, then earned both a J.D. from Harvard Law School and an M.B.A. from Harvard Business School, each with honors. He started his finance career at Morgan Stanley in New York and later became a Managing Director at The Blackstone Group before leaving to start H.I.G.
Those credentials have translated into a particular investment style: structured, credit-aware, and attentive to downside scenarios in ways that purely equity-focused investors sometimes aren’t. H.I.G. has built one of the larger middle market direct lending operations in the country, with WhiteHorse deploying roughly $18 billion across more than 285 companies through senior secured, floating-rate instruments.
When H.I.G. WhiteHorse closed its middle market lending fund at $5.9 billion, Mnaymneh commented publicly that the firm’s discipline in staying middle market-focused was the central competitive differentiator — a claim that is easy to make and harder to sustain over multiple fund cycles.
Fund Diversification and the Secondaries Push
H.I.G. now operates across seven strategies: private equity, growth equity, real estate, infrastructure, direct lending, special situations credit, and, most recently, GP-led secondaries. The last of those represents the firm’s most visible new direction. H.I.G. hired four senior professionals from Morgan Stanley’s private equity secondaries team and has targeted raising $1.5 billion for a vehicle focused on backing other managers’ continuation funds.
Continuation vehicles have become a more common tool in private equity as managers seek ways to hold onto high-performing assets beyond the typical fund life. GP-led exits accounted for close to a fifth of all private equity exits in the first half of 2025, up from 13% in 2024, according to Jefferies. H.I.G.’s $1.5 billion continuation fund target puts it alongside Warburg Pincus and New Mountain Capital in building dedicated exposure to this part of the market.
Portfolio exits have continued at a steady pace. H.I.G. sold United Flow Technologies, completed the divestiture of Highridge Medical’s bone healing division, and exited its stake in the GLD jewelry brand to an entity associated with Jay-Z’s investment group. Each transaction reflects the firm’s preference for mid-sized assets with specific operational or market positioning opportunities.
Mnaymneh has served on academic boards at Columbia and Harvard Law. His name appears in rankings of Florida’s wealthiest individuals, a reflection of how closely his net worth tracks the firm he has run for more than three decades. H.I.G. Capital is headquartered in Miami, where it has contributed to a broader shift in financial industry geography away from traditional East Coast centers.