Private Equity Firms Wisconsin: Top Firms in 2026

Key Facts: Wisconsin Private Equity at a Glance

• Wisconsin is home to 51 active private equity firms, according to the American Investment Council, making it one of the more active Midwest markets outside Chicago.
• PE investors deployed $8.34 billion into Wisconsin businesses in 2022, supporting 344 portfolio companies that employ approximately 226,000 workers statewide.
• Milwaukee is the dominant hub, with at least 9 of the state's largest PE firms headquartered there, including Mason Wells and Lubar & Co.
• The lower-middle market, specifically businesses with $1 million to $5 million in earnings before interest, taxes, depreciation, and amortization (EBITDA), is the primary deal sweet spot for most Wisconsin PE investors.
• Family business succession and founder-owned transitions are the defining investment theme across the state's PE ecosystem, driven by aging business owner demographics.
• Most Wisconsin PE firms extend their investment scope to the broader Midwest, covering Illinois, Indiana, and Minnesota alongside Wisconsin.
• Mason Wells, with $2.4 billion in aggregate assets under management across five buyout funds, is the only Wisconsin-based firm with fully disclosed capital under management.

Wisconsin Private Equity: Market Overview

The private equity firms in Wisconsin operate within a tightly focused ecosystem centered on the state's industrial backbone. With 51 active fund managers, Wisconsin punches above its weight relative to its population. The upper Midwest's concentration of manufacturing, distribution, and outsourced business services creates a reliable pipeline of investment opportunities. The $8.34 billion deployed in 2022 flowed into 344 PE-backed companies, sustaining roughly 226,000 jobs and demonstrating the market's scale beyond what firm count alone suggests.

Milwaukee dominates the geographic picture, hosting at least 9 of the state's most active PE investors. Secondary markets including Madison, Appleton, Wausau, Delafield, Brookfield, and Mequon each host one to two firms, most focused on specific niches or geographies within the state. Nearly every Wisconsin-based firm describes itself as Midwest-focused rather than Wisconsin-only, with most targeting deals across Illinois, Indiana, and Minnesota. The two notable exceptions, Wisconsin River Partners and Fox River Capital, explicitly limit their scope to within the state.

The defining characteristic of Wisconsin PE is its orientation toward lower-middle-market deal flow. National buyout firms rarely compete below $5 million in EBITDA, leaving a wide-open market for the state's local specialists. Aging business owner demographics amplify this dynamic: manufacturers and service businesses founded in the 1970s and 1980s are now entering succession cycles, producing consistent deal flow for firms built around relationship-driven acquisition processes.

Firm Comparison at a Glance

Wisconsin's PE landscape spans a wide range of strategies, from mega-fund buyouts to micro-cap succession specialists. The table below covers the ten most active firms with documented deal histories, sorted by disclosed AUM where available.

Only Mason Wells and Wing Capital Group disclose AUM publicly. Founders and limited partners evaluating other firms will need to request fund documentation directly. The AUM gap is itself a useful signal: several entries on this list operate as independent sponsors or search-fund-adjacent vehicles rather than traditional committed-capital funds.

Top Picks by Investment Strategy

Largest AUM: Mason Wells ($2.4 billion across five funds) is Wisconsin's only PE firm with fully disclosed institutional capital and the state's most active buyer by total deal count, with 71 portfolio companies completed since 1998.

Industrial Buyout Leader: Lubar & Co. brings a 56-year track record in manufacturing, distribution, and industrial services, making it the longest-tenured PE investor in Wisconsin and the default reference point for Midwest industrial buyout history.

Strongest for Recapitalizations: Bel Air Growth Partners explicitly structures transactions to allow founders to retain an equity stake, with a proven portfolio of partial liquidity events including Franklin Energy, where the company grew fivefold in three years following recapitalization.

Top Choice for Owner Transitions with Real Estate: Borgman Capital handles business and property transactions in a single closing, eliminating the need for sellers to coordinate separate buyers for their operating company and real estate assets.

Best for Sub-$5M EBITDA Businesses: Fox River Capital targets Wisconsin businesses generating $500,000 to $5 million in EBITDA, a segment that most institutional funds ignore entirely, making it the primary option for micro-cap operators approaching retirement.

Longest Hold Period: Wisconsin River Partners operates an indefinite hold model rather than the standard 5-to-7-year PE cycle, donates 10% of profits locally, and restricts its investment scope to Wisconsin-only businesses.

Double Bottom Line Pick: Generation Growth Capital pairs financial returns with a mandate to create wealth for minority entrepreneurs, a differentiated investment thesis with no direct equivalent among Wisconsin PE firms.

Emerging Tech Exception: SaaS Opportunity Capital occupies a distinct niche in Milwaukee's otherwise industrials-heavy market, targeting software businesses that fall outside the manufacturing and services focus of most state-based fund managers.

Top Wisconsin PE Firms in Detail

Mason Wells

The anchor of Wisconsin's PE ecosystem, Mason Wells manages $2.4 billion across five independent buyout funds and has completed 71 platform and add-on acquisitions since its founding. Sellers in consumer packaged goods, specialty industrials, and outsourced business services will find no larger or more active buyer headquartered in the state. The firm's investment thesis centers on buy-and-build: acquiring an initial platform company, then growing it through bolt-on acquisitions and organic expansion. A&R Logistics became a regional powerhouse through this model, and Qualus Power Services was scaled geographically through multiple service line additions. In 2025 alone, Mason Wells acquired Calvary Industries while completing exits from both Structural Concepts and L.B. White. For LPs seeking exposure to Midwest industrial buyouts through a fund manager with a disclosed track record spanning more than 25 years, Mason Wells stands apart from every other Wisconsin option.

Lubar & Co.

No Wisconsin PE firm carries more institutional history than Lubar & Co., which has operated in Milwaukee since 1968. Manufacturing, industrial services, and distribution define its sector focus, and its patient capital philosophy has made it a natural fit for business owners who want long-term stewardship rather than a quick exit cycle. Unlike most PE funds structured around a fixed five-to-seven-year horizon, Lubar positions itself as a long-duration partner, a model that resonates with family-owned manufacturers reluctant to see their business cycled through multiple owners. Its investment in Zero Zone, a refrigeration systems manufacturer, illustrates this approach. With 19 total portfolio companies and 8 current holdings, Lubar runs a concentrated book by PE standards, prioritizing depth of partnership over volume of deals.

Borgman Capital

What distinguishes Borgman Capital from every other Milwaukee PE firm is its ability to acquire a business and its real estate in a single transaction. This capability matters because a significant share of lower-middle-market Wisconsin businesses own their operating facilities outright, and most PE buyers require the seller to handle the property separately. Borgman eliminates that complexity, which is why seller testimonials consistently emphasize trust and process simplicity over valuation maximization. Since its founding in 2017, the firm has completed 20 company acquisitions and 13 real estate investments, with 7 platform companies and 4 realized investments to its name. Its acquisition of Aerial Work Platforms, a 41-year-old business sold by its founder alongside associated real estate, demonstrates the model in practice. The firm is industry-agnostic within the lower-middle market, with current portfolio exposure to food products, infrastructure services, and manufacturing.

Bel Air Growth Partners

The recapitalization specialist in Wisconsin's PE market, Bel Air Growth Partners structures transactions that allow founders to remain as equity holders while achieving meaningful liquidity. This matters for owners who want to de-risk personally without fully exiting a business they built. The firm's portfolio demonstrates the model: Franklin Energy's founder cited a fivefold growth in three years following Bel Air's recapitalization, and DPIS was positioned for regional expansion under a structure its founders described as enabling significant growth over the ensuing years. Bel Air also completed recapitalizations of Thermach and Mixer Systems, both Wisconsin manufacturers with established market positions. The Milwaukee-based firm, active since 2018, targets lower-middle-market manufacturing and business specialty services, making it the most relevant option for Wisconsin business owners who want a growth partner rather than a clean exit.

PS Capital Partners

PS Capital Partners occupies a focused position in Milwaukee's PE landscape, targeting lower-middle-market industrial and manufacturing businesses that are ready for their first institutional capital. The firm's track record reflects this focus: 17 total portfolio companies and 11 current holdings represent a notably active investment pace for a fund that does not disclose AUM publicly. Manufacturers who have grown organically but lack the management infrastructure or financial systems to compete at the next level are the firm's core constituency. PS Capital's operational improvement orientation makes it most relevant for business owners who want a hands-on partner with experience professionalizing smaller industrial operations, not simply a capital source.

Generation Growth Capital

Generation Growth Capital pursues a dual mandate that no other Wisconsin PE firm replicates: delivering financial returns while explicitly creating wealth for minority entrepreneurs. This investment thesis shapes both its deal sourcing and its portfolio management, driving the firm toward ownership transitions where business succession intersects with community economic development. Its 20 total portfolio companies and record of launching American Consolidated Metals as a new platform in the metals manufacturing sector demonstrate active deal execution. The West Bend manufacturer acquisition is another example of the firm's focus on Midwestern industrial businesses. For LPs interested in impact-aligned PE exposure within the Wisconsin market, Generation Growth Capital is the primary vehicle.

Wisconsin River Partners

Wisconsin River Partners holds a rare distinction in the state's PE market: it is one of only two firms that invest exclusively within Wisconsin's borders. The Wausau-based firm targets businesses generating $5 million to $50 million in revenue with $1 million to $5 million in EBITDA, focusing on manufacturing, distribution, and business services. Its hold period is indefinite, meaning sellers who sign with Wisconsin River Partners are not setting up their employees for another ownership transition in five years. The firm's founders, Jim Frings and Kevin Kraft, formalize this community orientation through a policy of donating 10% of all profits locally. For Wisconsin business owners whose primary concern is the long-term stability of their company and workforce rather than maximizing proceeds, Wisconsin River Partners offers a structurally distinct alternative.

Fox River Capital

The Appleton-based Fox River Capital serves a specific and underserved market: Wisconsin business owners approaching retirement who generate between $500,000 and $5 million in EBITDA. At this size, most institutional PE funds pass, and most strategic buyers focus on larger targets. Fox River was built specifically for this segment, operating as a long-term holder that targets sustainable value creation over exit-driven returns. Its geographic focus is Wisconsin-only, its deal structure favors business owners who prioritize the continuity of their company and employees over speed, and its operating partner model supports management teams through ownership transitions. For micro-cap Wisconsin operators who want a buyer that understands the local market and intends to hold for the long term, Fox River Capital is the most purpose-built option available.

Wing Capital Group

Wing Capital Group is one of only two Wisconsin-based PE firms that publicly disclose their fund size, managing $100 million from its Milwaukee headquarters. The firm's sector focus and specific investment criteria are not publicly disclosed, making direct outreach the necessary starting point for founders or advisors evaluating a fit. Its four total portfolio companies suggest a selective, concentrated strategy. For founders seeking a smaller, more accessible Milwaukee-based PE partner with committed capital rather than a fundless sponsor structure, Wing Capital is worth including in any shortlist.

Mendota Group

Mendota Group represents Madison's presence in Wisconsin's PE landscape and is one of the few Wisconsin firms headquartered outside the Milwaukee metropolitan area. The firm has completed 14 total acquisitions with 8 current portfolio companies, indicating a meaningful level of activity despite the absence of public information on its sector focus, investment strategy, or fund size. Advisors and founders in the Madison market or south-central Wisconsin should engage the firm directly to assess current criteria and availability.

Investment Trends and Capital Flows

Family Business Succession Wave

Wisconsin's aging business owner population is the single largest driver of deal flow for the state's PE firms. Businesses founded during the post-war industrial expansion are now owned by operators in their 60s and 70s, many without succession plans in place. This demographic reality creates a sustained pipeline of acquisition opportunities that is largely independent of macroeconomic cycles.

Buy-and-Build Consolidation in Fragmented Sectors

Platform acquisitions followed by add-on acquisitions have become the dominant value creation strategy among Wisconsin's larger buyout funds. Mason Wells' build of A&R Logistics from an initial platform into a regional powerhouse is the clearest example, but the pattern appears across outsourced services, packaging, and specialty industrials. Fragmented industries with no dominant regional player are prime targets for this approach.

Long-Term Hold Models Gaining Acceptance

The traditional PE hold period of five to seven years is increasingly seen as misaligned with the values of Wisconsin's family business sellers. Wisconsin River Partners and Fox River Capital both operate indefinite hold models, and this positioning has become a competitive differentiator for attracting sellers who prioritize legacy continuity. The growth of this model reflects a structural shift in how lower-middle-market PE is marketed in the Midwest.

Midwest Industrial Base as a Competitive Moat

Manufacturing, distribution, and outsourced business services continue to attract the majority of Wisconsin PE capital because the state's industrial base produces consistently profitable, asset-backed businesses with defensible market positions. National PE firms rarely compete at sub-$5 million EBITDA, leaving Wisconsin's local specialists with limited competition for deals in sectors they know deeply.

Community Impact and ESG Integration

Two Wisconsin PE firms have formalized social impact into their investment models. Generation Growth Capital explicitly targets minority entrepreneur wealth creation alongside financial returns. Wisconsin River Partners commits 10% of all profits to local community organizations. Both approaches reflect a broader shift in lower-middle-market PE toward double bottom line accountability, particularly in markets where relationships and reputation drive deal sourcing.

How to Evaluate PE Investors in This Market

Begin any due diligence process by establishing whether a firm manages committed capital. Most Wisconsin PE firms do not disclose AUM publicly, and several operate as independent sponsors or fundless sponsors, meaning they raise deal-by-deal financing rather than deploying a standing fund. This distinction affects closing certainty, deal speed, and the firm's ability to support add-on acquisitions post-close. Ask for fund documentation and LP references before advancing.

Sector fit matters more in Wisconsin than in larger PE markets because most Wisconsin funds are sector-specialized rather than generalist. A manufacturing business approaching a business services-focused fund will encounter not only strategic misalignment but likely a lack of operational expertise in the seller's specific industry. Verify that the fund has completed at least two to three exits in your sector before engaging.

Hold period philosophy is the most underappreciated evaluation criterion in this market. A seller expecting legacy continuity who accepts a term sheet from a fund targeting a five-year exit will face a renegotiation of those expectations at some point. Wisconsin River Partners and Fox River Capital eliminate this tension structurally. Borgman Capital and Lubar & Co. emphasize long-term stewardship in their positioning, though with less formal commitment to indefinite hold periods.

For businesses that own operating real estate, the integration question is material. Borgman Capital is the only Wisconsin PE firm with documented expertise in acquiring both the business and its property in a single transaction. All other firms will require the seller to either retain the real estate or arrange a separate buyer, adding complexity to the sale process.

Red flags include firms with no disclosed fund size and no verifiable portfolio of completed exits, hold period expectations that differ from what the seller communicated at initial outreach, and general partners without operating experience in the seller's specific industry. PE industry databases can verify deal history and current portfolio counts even when fund sizes are not disclosed.

Which Wisconsin PE Firm Fits Your Needs?

Business owners seeking a full exit with legacy preservation as the primary objective should put Borgman Capital and Wisconsin River Partners at the top of their outreach list. Borgman handles businesses that include real estate in a single transaction, while Wisconsin River Partners offers indefinite ownership continuity and a formal commitment to community giving. Both firms position relationship-building ahead of price maximization in their seller communications.

Owners who want partial liquidity without a full exit have a narrower set of options in Wisconsin. Bel Air Growth Partners is the clearest fit, with a demonstrated track record of recapitalizations that allowed founders at Franklin Energy, Thermach, and DPIS to retain meaningful equity stakes while bringing in growth capital. This structure works best for businesses with $1 million or more in EBITDA that are ready to scale but not ready to hand over the keys.

Manufacturers and industrial operators with $1 million to $5 million in EBITDA have the widest selection of credible buyers in Wisconsin. PS Capital Partners and Wisconsin River Partners both focus on this segment, with the former offering Milwaukee-based industrial expertise and the latter providing a Wisconsin-only, indefinite hold structure. Micro-cap operators below that threshold, with $500,000 to $5 million in EBITDA, should contact Fox River Capital in Appleton first, as the firm was built specifically for this seller profile. LPs seeking the most transparent fund manager in Wisconsin's PE market have one clear answer: Mason Wells is the only firm with $2.4 billion in fully disclosed committed capital, an active buyout fund, and a verifiable exit track record spanning more than 25 years.

Methodology

This guide to private equity firms in Wisconsin draws on data from the American Investment Council, PE industry databases, and individual firm websites. Firms were included based on Wisconsin headquarters or a primary investment focus on Midwest businesses with documented deal activity. AUM and deal data reflect the most recently available public disclosures; most Wisconsin PE firms do not disclose fund size publicly, and several operate as independent sponsors rather than traditional committed-capital funds. Market statistics including $8.34 billion in capital deployed and 344 PE-backed companies reflect 2022 data from the American Investment Council. Readers should verify current fund status, investment criteria, and EBITDA thresholds directly with each firm before initiating a sale or investment process.