Updated Q3 2026.

M&A Advisor in Chicago: A 2026 Field Guide for Lower Middle-Market Sellers

Hiring an M&A advisor in Chicago is one of the most consequential decisions a lower middle-market owner makes, because the Chicago metro sits at the intersection of the deepest bench of sell-side bankers outside New York, the second-largest concentration of middle-market private equity capital in the United States, and a dense industrial base that trades on multiples the coasts often overlook. Whether you run a 40-truck industrial distributor in Bolingbrook, a specialty CPA practice in the Loop, or a regional food-and-beverage brand in the western suburbs, the local advisory bench you retain will shape valuation, buyer pool depth, deal certainty, and post-close friction. This page maps that bench, the buyer universe that meets it across the table, and the fee and multiple bands you should expect in 2026. For statewide context, see our parent guide on hiring an M&A advisor in Illinois.

What does an M&A advisor in Chicago actually do?

An M&A advisor in Chicago runs a sell-side process for the owner of a privately held company, translating financial performance into an investable narrative, marketing the business to a targeted list of strategic and financial buyers, orchestrating due diligence and negotiations, and closing the transaction. In the Chicago LMM, that advisor typically sits inside a boutique investment bank rather than a bulge-bracket firm and works on a retainer plus success-fee structure.

The mechanics look similar to any coastal sell-side engagement, but the Chicago version has a specific texture. A local advisor spends the first four to six weeks compiling a Confidential Information Memorandum (CIM), building a management-adjusted EBITDA bridge that survives a Baker Tilly or Grant Thornton quality-of-earnings review, and modeling working-capital pegs against industrial-heavy comparables. The advisor then curates a buyer list that leans heavily on the roughly 200 private equity firms with a Chicago office, layered with strategic acquirers who scan the Great Lakes industrial corridor for tuck-ins. Outreach runs through a phased teaser, NDA, and CIM distribution, followed by indications of interest, management meetings, and letters of intent. Confirmatory diligence and definitive documentation typically pull in Kirkland & Ellis, Sidley Austin, or one of the other Chicago-headquartered PE-facing law firms on the buyer side, which means a competent local advisor will have run dozens of processes across the same counterparty desks.

The reason owners hire an M&A advisor in Chicago rather than run the process themselves is not spreadsheet horsepower. It is buyer access, negotiation use, and process discipline. A boutique that runs 15 to 30 LMM processes a year sees more auction dynamics in a quarter than an owner will see in a lifetime, and that pattern recognition is what compresses the gap between the first indication of interest and the closing wire.

Which M&A advisors serve Chicago LMM sellers?

Chicago sellers with $10M to $150M of enterprise value have unusually deep advisor optionality. Lincoln International, William Blair, and Livingstone Partners anchor the international mid-market bench, while Brown Gibbons Lang (BGL), Peakstone Group, PMCF, Dresner Partners, and Auctus Capital Partners cover the industrial and generalist LMM. Choice of firm depends on vertical fit, cross-border reach, and process style.

Lincoln International is headquartered in Chicago and stands as one of the largest independent mid-market investment banks in the world. In 2025 the firm reported $214.1 million of net income, up 31% year over year, and in 2026 it filed for a New York IPO. Lincoln is majority PE-backed and runs sell-side, buy-side, and capital advisory processes across industrials, business services, healthcare, and technology, with a heavy sponsor-to-sponsor cadence that suits Chicago industrial sellers north of $50 million of enterprise value. Lincoln International is the reference point when a Chicago owner wants a truly global buyer sweep.

William Blair, founded in Chicago in 1935, remains one of the most prolific mid-market sell-side houses in the country. Blair’s investment banking group runs deep in technology, healthcare, fintech, and business services, and its research and equity capital markets platform gives sellers a rare pipe into strategic acquirers who might otherwise sit out an LMM process. Blair is often the incumbent when a Chicago founder-led business is targeting a valuation above $75 million.

Livingstone Partners is a Chicago, London, and Dusseldorf boutique that specializes in cross-border LMM sell-side work in business services and industrials. For a Chicago manufacturer whose ideal buyer is a German Mittelstand strategic or a European family office, Livingstone’s transatlantic desk is difficult to replicate.

Brown Gibbons Lang (BGL), split between Chicago and Cleveland, is a specialist in LMM industrials and business services. BGL’s Great Lakes industrial coverage is one of the best-networked in the region, and the firm’s tombstones through 2025 show consistent execution in the $20 million to $150 million enterprise value range.

Peakstone Group, headquartered in Chicago, focuses on $10 million to $150 million LMM transactions across diversified industries. PMCF runs Chicago-based industrials LMM coverage with a particular reputation in engineered products and packaging. Dresner Partners is a Chicago LMM generalist with a long track record in restructuring-adjacent sell-side. Auctus Capital Partners handles $10 million to $100 million enterprise value transactions with a boutique, high-touch process style.

For $2 million to $10 million EBITDA sellers who fall below Lincoln and Blair’s typical minimums, boutiques like Peakstone, Dresner, and Auctus are often the right fit. That segmentation is one reason Chicago’s advisory bench outperforms most other metros for owners in the $10 million to $50 million enterprise value band. For the statewide vantage on how these firms rank against downstate Illinois options, revisit the Illinois M&A advisor overview.

How do Chicago fees compare to national LMM benchmarks?

Chicago LMM sell-side fees follow national norms: a $50,000 to $200,000 retainer, a success fee of roughly 3% to 6% of enterprise value, and modified Lehman or Double Lehman scaling. Because Chicago hosts so many PE bidders in one metro, competitive tension tends to be higher than in secondary markets, which often justifies the fee on outcome even when the headline rate looks identical to Dallas or Atlanta.

Below is a representative 2026 fee matrix for Chicago LMM sell-side engagements. Actual quotes vary by vertical, expected process length, and the perceived difficulty of the buyer sweep.

Table 1. Chicago LMM sell-side fee bands, 2026

Enterprise value	Retainer	Success fee (blended)	Typical structure
$5M to $15M	$25,000 to $75,000	5.0% to 6.5%	Flat or modified Lehman
$15M to $50M	$50,000 to $150,000	3.5% to 5.0%	Modified Lehman with kicker
$50M to $150M	$100,000 to $200,000	2.0% to 3.5%	Double Lehman with performance kicker
$150M+	$150,000 to $300,000	1.0% to 2.5%	Custom, often with minimum fee

Two Chicago-specific patterns worth flagging. First, retainers on industrial deals tend to be structured as monthly work fees credited against success, because the diligence lift on manufacturing businesses (inventory audits, environmental reviews, customer concentration analysis) is heavier than on service-line transactions. Second, kicker structures above a target valuation are common at Lincoln, Blair, BGL, and Livingstone, and they meaningfully align advisor incentives when the process runs into a competitive final round with two or three sponsor bidders. Owners should model kicker payoffs at 1.1x, 1.2x, and 1.3x of the negotiated floor to understand how much upside the advisor captures on a stretch outcome.

What EBITDA multiples are Chicago businesses selling for in 2026?

Chicago LMM multiples in 2026 cluster at 6x to 9x EBITDA for industrials and manufacturing, 8x to 12x for business services and healthcare, and 7x to 10x for food and beverage. Distribution runs 6x to 8x. These bands reflect disclosed 2025 Lincoln, William Blair, and BGL tombstones adjusted for the current sponsor bid environment.

Chicago’s multiple bands sit modestly above the national LMM median because of the density of sponsor bidders and the depth of strategic activity in the industrial corridor. A Bolingbrook fabricator with $8 million of adjusted EBITDA, clean customer concentration, and a management team willing to roll equity commonly draws indications at 7.5x to 8.5x, whereas the same business marketed out of a secondary Midwest metro without a Chicago-caliber process might clear at 6.5x to 7.5x.

Table 2. Chicago LMM EBITDA multiple ranges by vertical, 2026

Vertical	LMM multiple range	Typical process length	Dominant buyer type
Industrials and manufacturing	6.0x to 9.0x	6 to 9 months	PE platform + strategic
Business services	8.0x to 12.0x	5 to 7 months	PE platform
Healthcare services	8.0x to 12.0x	6 to 9 months	PE platform + roll-up
Food and beverage	7.0x to 10.0x	6 to 8 months	Strategic + family office
Distribution	6.0x to 8.0x	5 to 7 months	Strategic + PE platform

A few caveats. Recurring-revenue business models within these verticals routinely trade a full turn higher, especially in healthcare where multi-site platforms with strong same-store organic growth have cleared 13x to 15x on select 2025 processes. Owner-dependent businesses trade a full turn lower, regardless of vertical, because sponsors underwrite the transition risk into the model. For owners weighing whether a Chicago process will fetch a stronger multiple than a national broker-led process, the answer is almost always yes for deals above $10 million of enterprise value.

Which PE firms have offices in Chicago?

Chicago is the largest middle-market PE hub outside the East Coast, with more than 200 private equity firms operating local offices. Anchoring the roster are GTCR, Madison Dearborn Partners, Wynnchurch Capital, Waud Capital Partners, Wind Point Partners, Sterling Partners, RoundTable Healthcare Partners, and Adams Street Partners.

GTCR is one of the largest middle-market sponsors in the country, with sector-focused investing across financial services, technology, healthcare, and business services. Madison Dearborn Partners runs a Chicago-headquartered mid-cap platform strategy across basic industries, business and government services, consumer, financial services, healthcare, and TMT. Wynnchurch Capital is a Great Lakes industrial specialist that regularly acquires Chicago-area manufacturing and distribution businesses. Waud Capital Partners focuses on healthcare and business services in the LMM. Wind Point Partners targets consumer, industrial, and business services companies in the $150 million to $500 million enterprise value range. Sterling Partners and RoundTable Healthcare Partners both operate healthcare-focused Chicago platforms.

Thoma Bravo, historically a Chicago-anchored software specialist, relocated its headquarters to Miami in 2020 but remains active in the Chicago deal community and continues to source and execute transactions with local sponsors and advisors. Adams Street Partners operates from Chicago as an LP and secondaries platform, and while it does not lead LMM control buyouts, it influences the ecosystem through fund commitments to nearly every mid-market sponsor a Chicago seller will meet across the table.

The practical takeaway for a seller is that a single sell-side process out of Chicago can put a business in front of 40 to 80 targeted sponsors without leaving the metro. That density is why national roll-up strategies increasingly source Chicago deals first, and why boutique advisors here can afford to be selective about the buyer list.

What are the dominant Chicago M&A verticals in 2026?

Five verticals dominate Chicago LMM M&A flow in 2026: industrials and manufacturing, business services, healthcare services, food and beverage, and distribution. These are the sectors where local sponsor appetite, strategic buyer density, and advisor bench depth all reinforce one another.

Industrials and manufacturing is the anchor of the Chicago M&A market. The metro’s industrial corridor stretches through Bolingbrook, Elk Grove Village, and the northwest suburbs, feeding a steady flow of family-owned fabricators, contract manufacturers, and engineered-product businesses into sponsor-led buy-and-build platforms. Wynnchurch, Wind Point, and Madison Dearborn have all executed multiple industrial platforms out of Chicago in the last 24 months.

Business services covers everything from environmental services to facilities management to specialty staffing. This is the segment where recurring-revenue models command the highest multiples, and where William Blair, BGL, and Livingstone have executed some of their strongest 2025 tombstones.

Healthcare services spans multi-site physician practices, home health, behavioral health, and dental service organizations. Waud, RoundTable, and Sterling actively source in this vertical, and Chicago-area platforms in dermatology, orthopedics, and MedSpa have driven meaningful roll-up activity through 2025 and into 2026.

Food and beverage reflects Chicago’s legacy as a national food hub. Family-office capital and strategic acquirers dominate the buyer pool here, with sponsors playing a secondary role. Distribution, especially industrial and specialty distribution across the Great Lakes freight network, rounds out the top five and typically trades at slightly lower multiples but with faster process cadence.

Which local law firms and accounting practices handle Chicago sell-side deals?

Chicago hosts one of the deepest legal and accounting benches for M&A anywhere in the country. Kirkland & Ellis leads sell-side and PE-side legal work, followed by Sidley Austin, Winston & Strawn, Jenner & Block, Mayer Brown, and McDermott Will & Emery. Quality-of-earnings and tax structuring cluster at Baker Tilly, Grant Thornton, and RSM, all three of which are headquartered in Chicago.

Kirkland & Ellis, headquartered in Chicago, is the largest law firm in the world by revenue and the dominant private equity M&A firm globally. For any Chicago sell-side process where the likely buyer is a sponsor, Kirkland is almost certainly across the table. Sellers should either retain Kirkland directly or select a firm whose PE partners have executed dozens of processes against Kirkland partners on the buyer side.

Sidley Austin, another Chicago-headquartered global firm, runs sell-side, buy-side, and public M&A across sectors with a particular strength in healthcare and financial services. Winston & Strawn is a Chicago-founded global firm with a well-regarded PE and mid-market M&A practice. Jenner & Block and Mayer Brown both anchor Chicago corporate work with strong M&A benches. McDermott Will & Emery is a national leader in healthcare M&A and tax structuring, which matters for owners in dental, dermatology, and physician-practice roll-ups.

On the accounting side, Chicago is the corporate home of three of the top mid-tier US accounting firms: Baker Tilly, Grant Thornton, and RSM. All three run large Chicago transaction advisory practices covering sell-side and buy-side quality of earnings, tax structuring, and working capital analysis. A typical Chicago LMM process will have one of these three on the sell-side QofE, with the buyer often selecting one of the others, which keeps the diligence dialogue inside a familiar peer group.

Mesirow and Baird (headquartered in Milwaukee but very active across Chicago) round out the mid-market banking bench and often appear on smaller LMM engagements where a specialized boutique is not the right fit.

How does selling in Chicago differ from selling elsewhere in Illinois?

Selling a business in Chicago differs from selling downstate primarily in buyer pool depth, advisor optionality, and process cadence. A Chicago metro seller has direct access to 200+ sponsor offices and 8+ boutique investment banks within the same metropolitan area. Downstate Illinois sellers can still access this bench, but the process leans more heavily on remote outreach and management-meeting travel.

Three concrete differences matter. First, valuation. A Chicago-run process for a business in Peoria or Rockford will still capture Chicago-caliber multiples, but only if the local advisor curates a genuine buyer sweep rather than defaulting to a regional list. Second, process length. Chicago metro deals commonly close in five to seven months because management meetings, diligence sessions, and legal drafting all happen inside the same time zone with in-person cadence. Third, buyer relationship persistence. A Chicago-based owner and Chicago-based sponsor tend to build a working relationship pre-LOI that reduces post-close friction, whereas remote sponsor relationships often produce sharper elbows during integration.

The statewide Illinois M&A advisor guide walks through downstate metros in more depth and explains when a Chicago-headquartered advisor is worth the incremental retainer versus a Springfield or Champaign boutique.

What questions should you ask a Chicago M&A advisor?

The right diligence on an advisor covers vertical experience, recent Chicago comps, buyer pool logic, fee alignment, and process style. Ask for closed deals in your vertical over the last 24 months, specific sponsors they have run competitive processes against, and how they would model your working capital peg.

A practical shortlist of questions:

1. How many Chicago LMM sell-side processes have you closed in the last 24 months, and can you share tombstones in my vertical?
2. Who are the five most likely buyers for my business, and what is your prior process history with each?
3. What is your typical process length from engagement letter to closing wire, and what has caused your longest deal to stretch?
4. How do you construct your buyer list, and how many bidders do you target for the indications-of-interest round?
5. What is your success-fee structure, and how does the kicker work above the negotiated floor?
6. Which quality-of-earnings firm do you recommend for a business like mine, and why?
7. How do you model management rollover equity, and what typical percentage do you see in Chicago sponsor deals?
8. What is your view on the current sponsor bid environment for my vertical, and where do you see multiples moving over the next six months?

CT Acquisitions perspective: When we advise a Chicago LMM owner, the single most predictive factor for outcome is not fee structure or firm brand. It is the advisor’s willingness to run a genuine competitive process into the final round rather than settling early with the first credible sponsor. Chicago has enough buyer depth that a well-run process should always reach three to five late-stage bidders. If your advisor cannot articulate how they will keep four bidders live into the LOI round, you are leaving a full turn of EBITDA on the table.

Related CT Acquisitions guides

These companion guides cover the sell-side process end to end. Read alongside this page for the full picture on fees, timelines, and buyer archetypes.

• M&A Advisory Pillar Guide (2026)
• Buy-Side M&A Advisory
• Lower Middle Market M&A Advisor
• Business Appraisal Cost 2026
• Investment Bank Fees LMM 2026
• Quality of Earnings (QoE) Guide
• M&A Advisor for HVAC Business
• M&A Advisor for Plumbing Business
• M&A Advisor for Orthopedic Practice

Frequently asked questions about hiring an M&A advisor in Chicago

What is the minimum deal size for a Chicago sell-side investment bank?

Lincoln International and William Blair typically start at $50 million of enterprise value for a full sell-side engagement, though both take smaller deals in strategic sectors. BGL, Peakstone, Dresner, and Auctus routinely engage at $10 million of enterprise value, and PMCF handles industrials LMM at similar minimums. Below $10 million, sellers are typically better served by a regional business broker or a boutique M&A firm with a lower-cost engagement model.

How long does a typical Chicago sell-side process take in 2026?

Five to nine months from engagement letter to closing wire is the current norm. Business services deals lean toward the five to seven month range, while industrials and healthcare deals commonly run six to nine months because of heavier diligence. Regulatory approvals and financing conditions can extend timelines further, especially in healthcare.

Do Chicago M&A advisors work on retainer or contingency?

Both. Standard structure is a monthly retainer or engagement fee credited against a success fee at closing. Pure contingency is rare in the LMM because the buyer sweep, CIM production, and diligence support require material advisor cost. Owners who insist on zero retainer are generally routed to lower-tier brokers rather than the boutiques on this page.

Are Chicago EBITDA multiples higher than the national LMM median?

Yes, modestly. Chicago LMM multiples run roughly a half turn to a full turn above the national LMM median, driven by buyer density. This premium is most pronounced in industrials, business services, and healthcare and least pronounced in food and beverage where family-office capital sets the floor nationally.

Should a Chicago family-owned business hire a local advisor or a national one?

For enterprise values under $150 million, a Chicago-based boutique usually delivers better outcome economics than a national firm, because the buyer pool is already local and the process cadence benefits from in-person management meetings. Above $150 million, national firms with global buyer access can add value, but Lincoln and William Blair both compete effectively at that scale from Chicago headquarters.

How does Kirkland & Ellis being local affect a Chicago sell-side process?

Kirkland’s dominance in PE M&A means that in a large share of Chicago sell-side processes, Kirkland is representing the buyer. Sellers benefit from retaining a legal team whose partners have run dozens of prior negotiations against Kirkland’s PE partners, so pattern recognition on drafting norms and negotiation levers is intact. Sidley, Winston, and McDermott all have partners who fit this profile.

What role do Baker Tilly, Grant Thornton, and RSM play in a Chicago sale?

These three firms handle the majority of Chicago LMM quality-of-earnings and tax structuring work. Their local presence and depth of transaction-advisory partners means a sell-side QofE can be scoped, executed, and delivered in four to six weeks, which is fast enough to run in parallel with early buyer outreach rather than sequentially after a signed LOI.

Is Chicago still a viable exit market given Thoma Bravo’s move to Miami?

Yes. Thoma Bravo’s headquarters relocation in 2020 was a headline event but did not meaningfully reshape the local ecosystem. GTCR, Madison Dearborn, Wynnchurch, Waud, Wind Point, Sterling, and RoundTable all remain Chicago-anchored, and Thoma Bravo continues to execute transactions with Chicago-based counterparties. The metro’s status as the #2 US LMM deal-flow hub is intact.

Sources and further reading: Lincoln International, William Blair, Livingstone Partners, Brown Gibbons Lang, Peakstone Group, PMCF, GTCR, Madison Dearborn Partners, Kirkland & Ellis, Sidley Austin, Baker Tilly, Grant Thornton, RSM.