What Management Said
Read the full Q4 2026 transcript ↗As you saw in the press release, following the acquisition of NDS, we updated our reporting segments to Stormwater and Wastewater, as reflected in the results today. The Stormwater segment contains the legacy ADS business, pipe and Allied Products, as well as acquisitions we have made in the space, NDS, CULTEC, and River Valley Pipe. The Wastewater segment contains the legacy Infiltrator business as well as the acquisition of Orenco Systems. Stormwater revenue increased 12%, driven by a 43% increase in Allied Product sales, including the $49 million contribution from the NDS acquisition that closed February 2nd.
On an organic basis, Stormwater sales increased 2% overall, with a 12% growth in Allied Products. Once again, revenue in several highly profitable products grew double digits, including the StormTech retention/detention chambers, the Nyloplast capture structures, and our water quality product line. Pipe revenue decreased 2%, reflecting softness in the residential and infrastructure markets. Wastewater revenue increased 4% with strong activity in the Southeast and South.
We remain confident we have the right strategies and portfolio to increase our participation in the residential market as conditions inevitably improve. Moving to profitability, adjusted EBITDA increased 6% in the quarter, resulting in an adjusted EBITDA margin of 27.8%. This quarter's resilient margin is a reflection of the favorable growth, product mix, and price cost, as well as operational self-help initiatives and the capital invested over the last several years. Turning to the NDS integration, we are pleased with the progress made since closing the acquisition in February.
What went well
- Fourth quarter revenue increased 10% year-over-year to $677 million, including the NDS contribution, with organic double-digit growth in Allied Products, tanks, and residential advanced treatment, exceeding the top end of both the revenue and adjusted EBITDA guidance ranges.
- Full fiscal year 2026 delivered the second highest adjusted EBITDA margin in the company's history at 31.6%, while the fourth quarter margin was a resilient 27.8% (adjusted EBITDA up 6% in the quarter).
- The company generated $569 million of free cash flow for the full fiscal year, up from $369 million in the prior year, with cash from operations of $819 million representing an 85% conversion of adjusted EBITDA (including a $35 million incremental benefit from OBBBA).
- ADS closed the highly strategic ~$1 billion NDS acquisition almost entirely with cash on hand on February 2nd, ending the fiscal year with leverage of only 1.6x and integration tracking ahead of the acquisition model, with $25 million of annual cost synergies still expected by year three.
- The company returned $155 million to shareholders through dividends and repurchases in fiscal 2026 (up 29% over the prior year), repurchased 720,000 shares in the fourth quarter, and announced an 11% dividend increase.
- Stormwater revenue increased 12% (up 2% organically) driven by a 43% rise in Allied Product sales including a $49 million NDS contribution, and the company outperformed its two largest end markets, non-residential up 8% and residential up 7% for the full year.
What went wrong
- Fourth quarter pipe revenue decreased 2%, reflecting softness in the residential and infrastructure markets.
- Excluding the NDS acquisition, residential end-market sales decreased 1% in the quarter, as single-family housing continued to face headwinds from affordability, interest rate dynamics, and geopolitical uncertainty.
- The company is seeing significant inflation on diesel and common carrier rates and incurred incremental transportation costs tied to strong demand (particularly in the West), compounded by higher oil prices and greater macroeconomic uncertainty.
- SG&A increased year-over-year, driven primarily by the NDS acquisition and incremental compensation expense related to the strong full-year results.
- Management warned of a potential 'air pocket' this summer as customers pull orders forward ahead of announced price increases, making demand very choppy, and flagged that fiscal 2027 pricing set on a dollar-for-dollar basis to offset inflation will be dilutive to margins.
- Management noted its value proposition versus concrete pipe has compressed in certain regions because concrete competitors are not facing the same cost escalations ADS is.
Guidance Changes
| Metric | Period | Current guidance |
|---|---|---|
| Revenue | Full fiscal year 2027 | $3.35 billion to $3.55 billion (approximately $3.45 billion at the midpoint), including approximately $300 million of revenue from NDS for the full year |
| Adjusted EBITDA | Full fiscal year 2027 | $1.0 billion to $1.5 billion |
| Organic / end-market volume | Full fiscal year 2027 | Roughly flat at the midpoint of the guide, with pricing taken to offset cost inflation on a dollar-for-dollar basis |
| Revenue seasonality (first half share) | Full fiscal year 2027 | Approximately 55% of revenue in the first half (management also cited the normal 55%-60% first-half range), with Q1 potentially elevated from pre-buying before normalizing in Q2 |
| Non-residential end market | Full fiscal year 2027 | Flat to up low single digits, driven by strength in large projects like data centers |
| SG&A as a percent of revenue | Full fiscal year 2027 | Approximately 14% |
| Working capital as a percent of sales | Full fiscal year 2027 | About 21% at end of fiscal 2027 due to inflationary cost pressures |
| NDS cost synergies | By year three | $25 million in annual cost synergies expected, with integration tracking ahead of the acquisition model |
Performance Breakdown
| Metric | YoY | Note |
|---|---|---|
| Q4 total revenue | +10% to $677 million | Growth including the NDS acquisition contribution, with organic double-digit growth in Allied Products, tanks, and residential advanced treatment |
| Q4 Stormwater revenue | +12% (+2% organic) | 43% increase in Allied Product sales including a $49 million contribution from NDS, with double-digit growth in StormTech chambers, Nyloplast structures, and water quality products; partly offset by pipe down 2% |
| Q4 Wastewater revenue | +4% | Strong activity in the Southeast and South, double-digit tank growth from material conversion and expanded distribution, resilient leach field sales, and Orenco advanced treatment share gains |
| Q4 Allied Products (organic) | +12% (+43% including NDS) | New product introductions, ongoing customer programs, and broad-based U.S. growth from selling the complete package |
| Q4 Agriculture sales | +30% | Customers bought ahead of price increases |
| Q4 pipe revenue | -2% | Softness in the residential and infrastructure markets |
| Q4 residential end market | +18% (-1% excluding NDS) | NDS contribution offset an underlying decline as single-family housing faced affordability and interest rate headwinds; multifamily trends improving |
| Q4 non-residential (core) end market | +6% | Strength in the West and Midwest and broad-based Allied Products growth |
| Q4 adjusted EBITDA | +6%, margin 27.8% | Favorable growth, product mix, and price cost, plus operational self-help initiatives and capital invested over recent years |
| Full-year adjusted EBITDA margin | 31.6% (second highest in company history) | Self-help operational initiatives, high execution despite a challenging demand environment |
| Full-year non-residential market | +8% | Company significantly outperformed the market |
| Full-year residential market | +7% | Company significantly outperformed the market |
| Full-year free cash flow | $569 million vs $369 million prior year | Increased profitability and effective working capital management, plus a $35 million OBBBA benefit |
Earnings Call Themes & Trends
| Topic | Previous mention | Current period | Trend |
|---|---|---|---|
| NDS acquisition and integration | Closed the ~$1 billion NDS acquisition February 2nd, almost entirely with cash on hand | Integration tracking ahead of the acquisition model, strong cultural fit, $25 million cost synergies by year three reaffirmed, ~$300 million of NDS revenue expected in fiscal 2027, and growing excitement about revenue and cross-selling opportunities to be detailed at Investor Day | — |
| New segment reporting structure | Legacy Pipe/Allied and Infiltrator reporting | Reorganized into Stormwater (legacy ADS pipe and Allied, plus NDS, CULTEC, River Valley Pipe) and Wastewater (legacy Infiltrator plus Orenco) to better align with how the business is managed | — |
| Input cost inflation and price cost | Fourth consecutive quarter of volume growth and favorable price costs | Significant expected fiscal 2027 inflation on input materials and transportation, with pricing actions taken to offset dollar-for-dollar, which management acknowledges will be dilutive to margins as costs ramp | — |
| Recycled vs virgin resin | Fiscal 2026 saw a much friendlier virgin resin market, so ADS toggled toward virgin and ran recycled usage lower than normal | Toggling aggressively back to recycled resin (typically a 15%-20% cost benefit) faster than expected, with new Cordele, Georgia recycling capacity ramping next month and expanded Southeast recycling capacity underway | — |
| Logistics and internal fleet | — | Internal last-mile fleet covers roughly 70% of legacy ADS revenue and inflates only on diesel (not carrier rate), making ADS more competitive versus common-carrier-dependent competitors and potentially allowing an expanded delivery radius | — |
| Capital allocation and balance sheet | Conserved cash ahead of the NDS deal | Weighted average debt maturities extended to over six years (from two years prior), weighted average cost of debt lowered 30 bps to 5.65%, revolver increased to $750 million, leverage 1.6x with a below-2x target, and financial flexibility to pursue further strategic assets | — |
| Investor Day | — | Scheduled for June 18th in Hilliard, Ohio, to share the differentiated growth strategy, resilient profit platform, medium-term financial targets, and NDS cross-selling opportunities | — |
| Fiscal 2027 demand outlook | — | Overall demand similar to fiscal 2026 with a slightly more negative outlook on agriculture and single-family housing, non-residential flat to up low single digits driven by data centers, choppy order patterns, and a possible summer air pocket normalizing within the first half | — |
Q&A Summary
Michael Halloran (Baird) asked how sequential first-half revenue would play out versus normal given the mentioned pre-buy activity.
Management said first-half/second-half normally splits about 55%-60% / 40%-45% based on seasonality and they expect roughly the same, with some pre-buying ahead of already-announced price increases making the fiscal first quarter a little elevated before normalizing in Q2 to reach the guided first-half dynamic.
Halloran followed up on whether the fiscal first quarter margin would be compressed given pricing timing, inflation, and the volume pull-forward, before balancing out later.
Management agreed that is a fair way to look at it: more volume kicks in during Q1 from the pull-ahead while pricing actions mostly begin hitting in the fiscal second quarter, and since pricing is set dollar-for-dollar it will be dilutive to gross margins as the year progresses. CEO Barbour added that matching materials and transportation costs (a big diesel-heavy fleet) is genuinely tough to time by month or quarter, so it will be choppy.
Matthew Bouley (Barclays) asked about competitive positioning versus plastic and concrete competitors and ADS's ability to get the price it needs amid unprecedented cost inflation.
Barbour said ADS moved to get ahead of the inflation faster than many competitors and its order rate is holding up nicely. Plastic pipe competitors face similar inflation, and ADS's scale in virgin buying plus its rapid pivot to recycled material (with new Cordele, Georgia capacity ramping) makes it very competitive regionally. Concrete competitors are not facing the same escalations, so ADS's value proposition is compressed in certain regions, but management views this as temporary.
Bouley also asked management to unpack the non-residential outlook regionally and by vertical, and how much data centers carry the load.
Barbour and Michael Higgins cited data center activity plus solid general commercial and institutional construction, with 35+ states showing positive non-res growth for the year including Florida, Virginia, North Carolina, Texas, California, and parts of the Midwest. Two-thirds of Allied Products go into non-res, giving the best opportunity to sell the complete package, supported by strong sales execution and the Project Resource Center.
Bryan Blair (Oppenheimer) asked how to think about organic Stormwater and Wastewater growth for fiscal 2027 given the ~$300 million NDS contribution.
CFO Cottrill said at the midpoint they assume roughly flat end-market volume, pricing in the market to offset cost inflation, plus the $300 million of full-year NDS revenue, which gets to about $3.45 billion at the midpoint of the revenue guide.
Blair also asked what to assume for fiscal 2027 NDS synergies and about cross-selling progress.
Management declined to give a specific dollar amount but said they are ahead of the acquisition model, which phased synergies toward years two and three; cross-selling is emerging as an even bigger opportunity than expected and will be a major Investor Day topic spanning channel, product line, and sales force.
Jeffrey Hammond (KeyBanc) asked what is driving the outgrowth in wastewater (heavily residential) despite a down market, and to expand on the potential residential air pocket.
Barbour explained the air pocket is simply customers buying ahead of announced price increases, expected to make Q1 heavy but correct in Q2 and normalize within the first half. Craig Taylor said Infiltrator's new tank products, advanced treatment systems (Orenco), product-category expansion, and added distribution points are taking share and offsetting the residential slowdown.
Hammond also asked how management is weighing buybacks versus the M&A pipeline given the strong balance sheet and the stock's decline.
Barbour noted ADS conserved cash and paid nearly all cash for NDS, then authorized and exhausted a $200 million buyback when the stock dropped in February, and will continue repurchasing prudently while funding rising working capital. Cottrill added the priority is digesting NDS, working capital as a percent of sales will rise from just below 20% toward about 21%, they target below 2x leverage (at 1.6x now), and they have the flexibility to do more if a strategic asset becomes available.
Matt Johnson (UBS) asked about the ability to flex up recycled resin, current usage levels, ramp speed, and the virgin-versus-recycled cost spread.
Cottrill said recycled resin typically carries a 15%-20% benefit that can invert; fiscal 2026 saw a friendlier virgin market so they toggled toward virgin, and they are now toggling back to recycled with significant Southeast recycling capacity expansion underway. Barbour declined to disclose the recycled percentage but said prior-year recycled use was much lower than normal and they are flexing recycling hard, faster than expected, and can source enough material.
Johnson also asked whether ADS's historical playbook of putting through price and holding onto most of it as costs normalize would play out differently this time given softer demand.
Barbour said softer demand is a factor but is overcome by selling the package and leveraging distribution scale; competitive intensity could make the back end play out somewhat differently but only regionally, not nationwide, and he would never bet against ADS's tools, playbook, and experience to adjust profitably.
Colin Verron (Deutsche Bank) asked about the internal fleet versus common carrier lever and the potential dollar benefit.
Barbour said ADS is the ultimate last-mile carrier, delivering roughly 70% of legacy ADS revenue on its own fleet; in high-inflation transportation times its private fleet inflates only on diesel (not carrier rate), making it more competitive and potentially allowing an expanded delivery radius versus common-carrier-dependent competitors.
Verron also asked where the biggest share-gain opportunity lies across end markets given the expanded NDS and Infiltrator portfolio.
Barbour said probably more opportunity in residential since NDS is stronger there (more R&R-weighted, versus Infiltrator's new-construction tilt) and the legacy business is under-penetrated in residential, so cross-selling helps most there; on non-res, NDS products like channel drains are a nice addition to the solutions package, and both markets have runway.
Ethan Roberts (Stephens) asked for more color on SG&A initiatives and the fiscal 2027 SG&A assumption.
Cottrill guided to about 14% SG&A as a percent of revenue, a return toward a normalized level (down from 15%+ this past year), incorporating a full year of NDS plus ongoing cost initiatives and expected fixed-cost leverage on the price-cost-driven revenue growth.
Roberts also asked whether the flat volume guide reflects on-the-ground demand or conservatism given ADS's history of outperformance and the pricing/competitive dynamics.
Barbour said the conservatism reflects end-market demand, not competitive activity: non-res is more of the same, agriculture will be a little compressed year-over-year, and residential pipe will be compressed as land development slows; ADS still expects to outperform and win business locally.
More on Advanced Drainage Systems, Inc.
Reported 2026-05-21 · figures from the Advanced Drainage Systems, Inc. Q4 2026 earnings call.
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