Company: Madison Air Solutions Corporation

Date of Prospectus: 2026

Madison Air Solutions Corporation IPO: In-Depth Investor Analysis, Key Financials, and Strategic Listing Outlook

Madison Air Solutions Corporation’s landmark IPO offers investors a gateway into the indoor air quality sector, with a bold deleveraging plan, substantial cornerstone interest, and a dual-class share structure. This analysis breaks down every critical detail for market participants seeking actionable insights and risk-adjusted perspectives.

IPO Snapshot

IPO Symbol: MAIR

Offer Price Range: \$26.00 per share (midpoint of estimated range)

Total Offer Size: 82,692,308 shares of Class A common stock (plus up to 12,403,846 additional shares via overallotment option)

Expected Net Proceeds: \$2,073.1 million (or \$2,385.1 million if overallotment exercised in full), based on the \$26.00 offer price

Post-IPO Outstanding Shares: 164,497,178 shares of Class A common stock and 324,429,147 shares of Class B common stock

Concurrent Private Placement: \$100 million of Class B common stock to be purchased by Holdings at the IPO price (approx. 3,846,154 shares)

Dividend Policy: No dividend has been declared; no payout ratio or timetable stated. The company’s stated purpose for the IPO is to increase capitalization, enhance financial flexibility, and create a public market for its equity.

Use of Proceeds: Approximately \$2,173.1 million from IPO and concurrent private placement will be used to repay borrowings under the initial Term Loan Facility, including accrued and unpaid interest. Any remaining funds will be used for general corporate purposes. This signals a strong deleveraging focus, with enhanced financial flexibility as a secondary goal [[42]], [[85]], [[87]].

Placement Breakdown: The offering comprises a public tranche, a \$100 million private placement to Holdings (Class B), and up to \$525 million in cornerstone investor interest (Class A, not subject to lock-up). ESOP and employee allocations are covered by a 2026 Omnibus Incentive Plan reserving 44,003,369 shares of Class A common stock for future issuance, including 8,496,759 for outstanding awards as of the prospectus date [[43]], [[88]].

Investor Participation & Book Quality

Cornerstone Investors:

• Counterpoint Global (Morgan Stanley Investment Management)
• Durable Capital Partners LP
• HRTG GPE, LLC (and managed vehicles)

Together, these cornerstone investors have indicated non-binding interest for up to \$525 million of Class A common stock at the IPO price. Their shares are not subject to a lock-up, and actual allocations may be higher, lower, or zero depending on final determination. Underwriters receive the same commission on these allocations as on other public shares [[2]], [[42]], [[212]].

Book Quality Assessment: The presence of brand-name cornerstone investors, along with a large private placement to Holdings and a sizable ESOP pool, adds credibility to the order book and may support listing-day stability. However, the lack of binding subscription levels means that oversubscription rates and precise retail/institutional breakdowns are not disclosed.

Deal Parties & Structure

Lead Joint Bookrunners: Goldman Sachs & Co. LLC, Barclays, Jefferies, Wells Fargo Securities

Additional Joint Bookrunners: BofA Securities, Citigroup, Baird, RBC Capital Markets, Guggenheim Securities, Santander, Wolfe | Nomura Alliance, CIBC Capital Markets

Co-Managers: Comerica Securities, William Blair, Stifel, Capital One Securities, PNC Capital Markets LLC

Underwriters’ Option (Greenshoe): Up to 12,403,846 additional shares of Class A common stock (15% of the base offer) [[2]], [[212]].

Stabilization Mechanism: Standard 30-day overallotment option with market stabilization activities permitted [[212]].

Assessment: The involvement of multiple top-tier investment banks and a large syndicate underscores a strong institutional support network, which, together with the cornerstone interest, could help anchor listing-day performance.

Company Overview

Business Model & Revenue Streams: Madison Air Solutions is a leading provider of indoor air quality (“IAQ”) solutions, spanning the commercial and residential sectors. Products and services target the enhancement of safety, health, and productivity in indoor environments, addressing air pollution that is often 2–5 times higher indoors than outdoors. Revenue is generated through the sale of branded IAQ equipment, solutions, and related services, with an estimated 90%+ of human life spent indoors driving demand [[15]].

Key Products/Services: The company’s portfolio includes proprietary brands and solutions focused on air purification, filtration, and climate control. Recent expansion includes the acquisition of AprilAire (Research Products Corporation) on May 6, 2025, which is immediately accretive to the revenue base [[12]], [[44]].

Customer Segments & Geography: Madison Air serves a diversified base spanning residential, commercial, healthcare, education, and workplace environments, with a particular focus on North America. The company’s market exposure is heavily linked to the home improvement and construction sectors [[32]].

Industry Size & Definition: While the exact total addressable market (TAM) is not quantified in the summary, the company references robust independent industry analyses and expresses confidence in substantial runway for growth, though it notes that market size estimates are subject to uncertainties [[14]].

Financial Health: Multi-Period Performance Snapshot

Summary: Madison Air Solutions displays consistent revenue growth, resilient adjusted EBITDA margins, robust free cash flow, and a significant deleveraging event post-IPO. Multi-year financials are summarized below.

Key Financial Observations:

• Net sales rose from \$2,556M in 2023 to \$3,340M in 2025 (actual; pro forma adjusted is \$3,519M).
• Gross profit margins are stable and industry-leading (35–38%).
• Adjusted EBITDA margin improved to 26.7% in 2025 (actual; pro forma adjusted 26.6%).
• Free cash flow generation is strong, reflecting robust operational leverage and cash conversion (FCF Conversion in excess of 350% in 2025).
• Significant post-IPO deleveraging: Long-term debt drops from \$5,650.4M to \$3,529.1M (pro forma adjusted) [[48]], [[87]].

Market Position and Competitive Advantages

Market Position: Madison Air Solutions is positioned as a mission-driven leader in indoor air quality solutions, with a differentiated “Return on Air” value proposition. The company’s scale, diversified product set, and brand portfolio (including AprilAire) are cited as competitive advantages. The company’s backlog and order book highlight robust demand and a strong pipeline [[15]], [[44]], [[45]].

Brands: Multiple proprietary brands, including AprilAire (acquired May 6, 2025). The company’s “decentralized, entrepreneurial culture” is emphasized as a performance driver [[12]], [[129]].

Management Team: Led by CEO Jill Wyant, with Founder Larry Gies (who will control the company via Class B shares post-IPO). The board and management bring a mix of industry experience, operational expertise, and growth-orientation [[129]], [[164]].

Trends, Timing & Environment

Sector and Macro Trends: The company’s growth is tied to rising awareness of indoor air quality, megatrends in health, productivity, and the post-pandemic focus on safe indoor environments. Exposure to home improvement and construction cycles means the business is sensitive to housing and economic conditions.

Timing: The IPO is expected to price and list in 2026. The underwriters expect to deliver shares against payment in New York, New York on or about 2026 (exact date TBA) [[2]], [[42]].

Recent Developments: The AprilAire acquisition (May 6, 2025) materially expands the company’s product suite and market reach. The company has completed organizational transactions, a concurrent private placement, and a recapitalization prior to the IPO [[11]], [[12]], [[44]].

Market Environment: The prospectus notes both macroeconomic uncertainty and strong secular demand drivers, including increased investment in indoor environments and a large addressable market. The company’s large order backlog and organic revenue growth rate (12.4% in 2025) suggest resilient underlying demand [[45]].

Prospectus Deep Dive: Key Risk Factors

Principal Risks:

• Economic Sensitivity: Growth is exposed to cycles in construction, home improvement, and general macro trends. A downturn could reduce demand and financial performance [[32]], [[50]].
• Market Size Uncertainty: Addressable market estimates may be overstated or shift over time, limiting growth potential [[32]].
• Competition: The IAQ sector is highly competitive. Failure to execute the 80/20 operating model or communicate value could undermine performance [[32]].
• Leverage: Although being reduced, significant indebtedness will remain post-IPO. Interest expense and refinancing risk persist [[87]], [[103]].
• Corporate Governance: Dual-class structure concentrates 95%+ of voting power with Holdings and Co-Investors LLC post-IPO. Public shareholders have limited influence [[42]], [[75]].
• Liquidity Risk: Limited public float may result in price volatility. Large cornerstone allocations and absence of lock-ups may increase price swings [[78]].
• Regulatory & Legal: Product liability, environmental, and compliance risks are present, as is the risk of warranty or recall claims [[84]].

Growth Strategy

Expansion Plans: Madison Air plans to leverage IPO proceeds and increased capitalization for:

• Deleveraging and balance sheet strengthening (primary use of proceeds)
• Ongoing product development and innovation
• Expansion of sales and marketing organizations
• Potential future acquisitions (M&A), though none are currently committed [[119]]
• Continuing the integration of AprilAire and realization of operational synergies

Capex/Investment: While exact capex figures are not specified, the company indicates willingness to raise additional capital if needed for growth, and lists working capital, R&D, and acquisitions as potential uses [[119]].

Ownership & Lock-Ups

Pre- and Post-IPO Shareholding Structure:

• Lock-ups: Most directors, executive officers, and major shareholders have agreed to 180-day lock-ups. However, cornerstone investor shares are not subject to lock-up, and Holdings and Kedge are subject to a Two-Year Lock-up Agreement, with certain exceptions [[42]], [[187]], [[213]].
• ESOP/Employee Pool: The 2026 Omnibus Incentive Plan reserves over 44 million Class A shares for future issuance [[43]].
• Dual-Class Structure: Class B shares (10 votes per share) ensure Holdings’ voting control post-IPO, regardless of public float [[75]].

Valuation and Peer Comparison

Valuation Metrics: No explicit P/E, EV/EBITDA, P/B, or sector peer comparison metrics are disclosed. The prospectus does not list peer symbols or comparable IPOs in the same period. Therefore, no comparative valuation table is provided.

Dilution: New investors purchasing at the \$26.00 IPO price will experience immediate dilution of \$32.94 per share relative to pro forma net tangible book value, meaning post-IPO book value per share will be negative [[80], [89]].

Research & Opinions

No analyst coverage, target prices, or explicit opinions about the IPO, sector, or company are included in the prospectus.

Listing Outlook

Market Sentiment and First-Day Performance:

• Strengths: Substantial deleveraging, large cornerstone interest, robust financials, leading sector position, and a top-tier syndicate suggest the potential for stable listing and positive first-day support.
• Risks: Free float will be limited, dual-class voting structure curtails public investor influence, and lack of lock-up on cornerstone shares could add volatility. Large dilution relative to book value may cap aggressive upside. Macroeconomic sensitivity is a persistent concern.
• Inference (from prospectus only): The IPO appears worth subscribing for investors seeking exposure to a sector leader with deleveraging upside and growth potential. The likely first-day trading range is expected to be near or modestly above the IPO price, with book quality and underwriter support offsetting potential volatility from the limited float and cornerstone allocations. Sustained outperformance will depend on delivery of growth and further balance sheet strengthening.

Prospectus Access

For the full registration statement and additional disclosures, visit: www.sec.gov

Company website: www.madisonair.com