A comprehensive guide to the operating partners of the leading private equity firms
Historical Evolution
New Mountain Capital (NMC) was founded in 1999 by Steve Klinsky with a vision distinctly focused on “business building” rather than traditional leveraged buyouts. From its inception, NMC’s strategy emphasized acquiring high-quality companies in defensive growth sectors and then actively helping them grow, reflecting an early commitment to operational value creation. In the 2000s, while many PE firms relied heavily on debt-driven returns, New Mountain set itself apart by virtually eliminating portfolio company defaults and prioritizing growth and stability. This approach naturally led to the development of an operating partner model as the firm scaled. By the 2010s, New Mountain had formalized a robust “value creation” apparatus: it recruited experienced executives and sector specialists to join the firm as Operating Partners and Senior Advisors. The operating model evolved in tandem with NMC’s expansion into new strategies (such as credit and net lease) and geographies (opening offices in London, Tokyo, Los Angeles by the mid-2020s). Over time, the firm institutionalized its operational focus, growing an Executive Advisory Council of industry experts and a large network of Operating Partners to support its portfolio companies. By 2025, after nearly 25 years, New Mountain’s operating partner program had become deeply ingrained – a key reason the firm boasts consistent high returns with no bankruptcies in its private equity history.
Structure and Scale of Current Model
New Mountain Capital’s operating partner platform is extensive and multi-layered. As of 2024, NMC reported having approximately 40 Operating Partners and Senior Advisors (“Project Partners”) officially on its masthead, in addition to about 55 more affiliated operating executives in an Executive Advisory Council. These individuals bring expertise across NMC’s focus sectors (such as life sciences, healthcare services, software, fintech, and business services). The operating partners are integrated into New Mountain’s organization alongside the core deal team of ~20 private equity transaction leaders. Many Operating Partners are not full-time employees; instead, they are seasoned executives (former CEOs, COOs, industry experts) engaged as needed on portfolio initiatives or serving as board members. New Mountain’s model is geographically broad but centrally managed – the firm is headquartered in New York, with satellite offices in regions like London and Tokyo to support global investors and scouting, but operational guidance is coordinated mainly through sector teams rather than dispersed local operating units. The Operating Partner pool is organized by industry vertical or functional expertise. For example, some Operating Partners focus on healthcare and pharma services, others on software and data analytics, and others on areas like supply chain or finance. In addition, New Mountain maintains an Executive Advisory Council (~55 members) comprising current and former executives who can be tapped for specific projects, mentorship of portfolio CEOs, or board roles. This structure gives NMC significant scale: effectively a bench of ~95 operating resources globally, augmenting its 250 internal professionals. Internal coordination is strong – Operating Partners often work hand-in-hand with New Mountain’s investment principals from due diligence through exit, ensuring a cohesive effort. The overall model is one of a large, integrated operating network that can be deployed flexibly across New Mountain’s private equity, “strategic equity” (minority growth investments), credit, and other strategies.
Key Features and Practices
New Mountain’s operating partners are embedded at every step of the investment process, reflecting the firm’s mantra of combining “financial skills with operational and strategic skills at every step”. Pre-investment, Operating Partners often assist in the firm’s intensive “deep dive” sector research and idea generation process. NMC forms in-house teams to study target sub-sectors for years, working with experts to understand industry dynamics before ever making an investment. This means by the time a deal is on the table, NMC’s operating experts have already identified key value creation levers. During due diligence, Operating Partners and advisors help evaluate management capabilities, operational risks, and growth opportunities, frequently conducting on-site assessments or customer interviews. Post-acquisition, New Mountain deploys a very hands-on approach: an Operating Partner or senior advisor typically joins the portfolio company’s board and may even take an interim management role if needed. The firm’s teams “work intensively with management to build the value of these companies”. often co-leading initiatives. Common practices include: drafting a 100-day plan and multi-year growth roadmap with management, implementing new KPIs and dashboards, executing add-on acquisitions, and optimizing operations (from supply chain improvements to digital transformations). Operating Partners serve as partners to portfolio CEOs, not just consultants – they often spend substantial time on-site, coaching executives and rolling up their sleeves on key projects. New Mountain also leverages its Executive Advisory Council members for targeted needs; for example, bringing in a former Fortune 500 CIO to advise a software company on product development, or a healthcare veteran to help a pharma services company navigate regulatory expansion. Governance-wise, NMC ensures active oversight: its deal lead and relevant Operating Partner will usually chair or heavily influence key board committees, aligning management incentives with value creation plans. Importantly, New Mountain’s culture emphasizes collaboration rather than dictating decisions. Management teams are aligned through careful incentive structures and NMC’s track record of trust (the firm often cites that none of its companies have ever missed an interest payment, underscoring prudent guidance). Focus areas for NMC’s operational playbooks typically include organic growth acceleration (e.g., salesforce expansion, R&D investment), strategic M&A (bolt-ons), and operational risk management and efficiency gains. In summary, New Mountain’s practices are intensive and proactive: value creation plans are developed early, operating partners co-execute those plans alongside management, and progress is closely monitored through consistent engagement.
Philosophy and Differentiators
New Mountain Capital’s core philosophy is often summarized as “building great businesses” in carefully chosen sectors. This philosophy underpins its operating partner model. Unlike PE firms that rely mostly on financial engineering, NMC believes the primary driver of returns should be growth and operational improvement, with debt playing a secondary role. A key differentiator is New Mountain’s focus on “defensive growth” industries and deep specialization: the firm proactively develops operational expertise in niche sectors years in advance. By the time it invests, it often knows the space as well as, or better than, the incumbent management – but it uses that knowledge to support rather than supplant management. New Mountain’s model is highly collaborative and oriented around risk management; it prides itself on having zero bankruptcies across its portfolio. This is attributed to disciplined selection and then intensive operational oversight to avoid pitfalls. Culturally, NMC positions itself as a “business partner” rather than just an owner. Steve Klinsky has described the firm’s style as working with management to seek continuous improvement, reflecting almost a blend of private equity with management consulting and entrepreneurship. This is different from certain competitors that either take a very hands-off approach or, conversely, those that replace management and install their own teams. New Mountain tends to keep existing leadership (given its careful vetting of “highest quality leaders” up front and then bolster them with resources and expertise. Another differentiator is NMC’s sheer commitment to operational resources: maintaining ~40 operating partners/advisors on roster is a large investment that many middle-market firms do not make. It reflects confidence that operational improvements are key to value – indeed, New Mountain notes that historically the majority of its value creation comes from growth and earnings improvements, not from multiple arbitrage or leverage. Compared to industry peers, New Mountain is often mentioned in the same breath as firms like Insight Partners or Thoma Bravo in terms of value orientation, yet NMC’s approach spans beyond tech into diverse sectors, all with the same ethos of “prudent growth.” The firm’s mantra of combining “vision, strategy, execution and continual prioritization” in a team sport fashion speaks to a humble, roll-up-the-sleeves culture among its operating partners. In summary, New Mountain’s philosophy is that patient, intensive business-building in the right sectors will yield superior risk-adjusted returns – a philosophy proven by its long-term track record and one that distinctly shapes its operating model.
Examples and Case Studies
New Mountain’s value-oriented operating model has led to numerous success stories across industries. One notable example is Blue Yonder (JDA Software), a supply-chain software company. New Mountain acquired the company (then called RedPrairie) in 2010 for ~$565 million and over the next decade worked with management to drive extraordinary organic growth. With New Mountain’s strategic guidance and operational support, the company (renamed Blue Yonder) expanded its product offerings and customer base dramatically, resulting in an eventual sale in 2021 to Panasonic for $8.5 billion – about $5.7 billion of that value creation came from organic growth rather than add-on acquisitions. This case exemplifies NMC’s approach: picking a sector leader and partnering to achieve transformational growth. Another example is Ikaria, a specialty pharmaceutical company NMC carved-out and helped professionalize and grow, eventually exiting at a strong return. In New Mountain’s healthcare services vertical, it built Avantor (a lab supplies and life sciences tools provider) through a series of acquisitions and operational improvements into a global leader that later went public. A common thread in these cases is New Mountain’s role in orchestrating growth strategies and operational upgrades. The firm’s influence can also be seen in more quantitative outcomes: across all its private equity investments, New Mountain has created an estimated $85+ billion in enterprise value gains since inception, with no bankruptcies and no missed debt payments – indicating that its companies have consistently grown earnings and managed risks under NMC’s stewardship. As a specific illustration, New Mountain’s investment in Blue Yonder is often highlighted because it showcases how operational engagement (in product strategy, go-to-market improvements, and strategic partnerships) led to a fivefold increase in the company’s value, validating the firm’s business-building model. Overall, from software to industrials to healthcare, New Mountain’s portfolio is replete with cases where its operating partners’ deep sector knowledge and hands-on involvement have helped turn good companies into great, “new mountains” of industry leadership.
