WaterBridge Infrastructure LLC (WBI) stock intrinsic value fair value estimate & owner earnings analysis

WaterBridge Infrastructure runs the largest produced-water network in the United States, almost entirely in the Delaware Basin of West Texas and southeast New Mexico, plus two oilfield waste facilities (Desert Environmental) and a small gas transportation business in Oklahoma. Every barrel of oil produced in the Delaware brings several barrels of salty water with it; WaterBridge gathers that water by pipeline, recycles some, and injects the rest into disposal wells. At the end of 2025 it had about 2,500 miles of pipe, 201 handling facilities and 4.7 million barrels per day of capacity, handling about 2.8 million barrels per day. Customers include bpx energy, Chevron, Devon, EOG and Permian Resources; Permian Resources, Devon and bpx were 14%, 11% and 10% of 2025 revenue. Revenue comes from per-barrel fixed fees under long-term contracts: 71% have initial terms of at least 15 years, the weighted remaining term was 10.4 years, about 2.4 million acres are dedicated, most fees rise with inflation, and some contracts carry minimum volume commitments (the bpx Reeves County system has 10-year minimums). A sister company, LandBridge, with the same sponsor (Five Point) and the same management team, owns the surface acreage that gives WaterBridge access to disposal pore space, including 3.2 million barrels per day of additional permitted capacity. The company went public in September 2025 at $20 a share in a structure where public holders own about 43 million Class A shares and the founders hold about 80 million exchangeable units; we value all roughly 124 million economic shares together. Earnings history. The reported history is short and messy. Filed annual figures before September 2025 are for only one of the three businesses that were combined at the IPO (the northern Delaware system), so 2023, 2024 and most of 2025 describe a smaller company. On those figures, cash earnings after interest, after the cost of keeping the existing system running, and after share-based pay were negative in 2023 (about -$0.72 a share), roughly breakeven in 2024 (-$0.04) and slightly positive in 2025 ($0.12). We split capital spending into the part needed to sustain the network and the part spent on growth, using the company's average ratio of capital spending to revenue (about 59%) applied to each year's revenue increase; this is a mechanical estimate because the company does not disclose maintenance spending. None of these years is a usable anchor because none represents the combined business, so we set the earnings level from the combined company's first full half-year (January to June 2026): revenue of $418.7 million (about $840 million a year), operating cash flow of $160.0 million, cash interest of $50.2 million, and depreciation and amortization of about $141 million. Adding interest back, the business produced roughly $420 million a year of cash before lenders and before capital spending. Against that we charge an estimated $145 million a year to sustain the network (close to the 2025 sustaining estimate scaled to the larger system and roughly half of annual depreciation) and a small amount for share-based pay, giving a level of about $275 million a year of cash before interest. We have only two quarters of the combined business to support that number, so it carries real uncertainty in both directions. Because the company is now a taxpaying corporation and the founders' units carry a tax receivable agreement that pays them 85% of certain tax savings, we deduct about 3% for cash taxes in the first five years and 10% thereafter. Growth credited. The trailing growth rate is not meaningful (2025 combined three companies mid-year), so the comparison we can make is that the base case's first year sits below the current half-year run rate, not above it, because about $60 million of 2026 spending is completing the Speedway Pipeline. We credit only growth that is under construction or contracted: Speedway phase I (500,000 barrels per day to LandBridge pore space in the Central Basin Platform, sanctioned September 2025, expected in service in the third quarter of 2026) and the bpx Reeves County system with 10-year minimums. We credit inflation escalators at 2% a year in the base case. We do not credit Speedway phase II (open season only, no announced commitments in the filings), further acquisitions, or volume growth from new drilling beyond what the dedicated acreage already supports. Base case: the network earns about $275 million a year before interest in 2026, rising to about $310 million once Speedway phase I is full by 2028, growing with inflation escalators to roughly $330 million by year 10. Contracts average about 10 years remaining; Delaware Basin producers have to dispose of water as long as they produce oil, and in-place pipe on dedicated acreage is expensive to duplicate, so we hold earnings flat for ten years after year 10 and then fade them to zero over a further ten years as fields decline. That is worth about $3.9 billion as a business. Against it the company owes about $1.64 billion (the $825 million of 6.25% notes due 2030, $600 million of 6.50% notes due 2033, and about $210 million drawn on the revolving credit facility), less about $48 million of cash, for net debt of about $1.59 billion. The notes carry rates close to our yardstick, so we make no cost-of-debt adjustment. Base equity is about $2.3 billion, or $18.65 a share. Bear case: Delaware Basin activity has cycled hard before. In the 2015-2016 oil price collapse and again in 2020, Permian rig counts fell 50-75% and new-well completions fell sharply; produced-water volumes fall less than drilling because existing wells keep making water, but the growth that fills new pipe disappears and producers push for fee concessions. The bear case starts from a lower level ($245 million), takes a 25% cut in years 2 and 3 and 15% in year 4 (sized to the 2015-2016 and 2020 experience for a business with dedications but limited minimum volumes), no inflation growth, only half the Speedway contribution, and then a 20% fee reset as contracts roll off around year 10, fading to zero over 15 years. It also charges about $100 million more debt for refinancing the 2030 notes at worse terms during a downturn and for continuing development spending. The business is worth about $2.1 billion against roughly $1.69 billion owed, leaving about $3.27 a share. In the trough the business still generates about $180 million a year before interest against an interest bill of about $100 million, so it carries its debt, but with little margin. A larger risk this case only partly captures is regulation: Texas and New Mexico regulators have restricted injection in seismic response areas, and a broad restriction in the core of the network would cut capacity in ways no historical cycle shows. Bull case: earnings start at about $305 million, Speedway phase I fills quickly and the bpx system reaches its expanded 600,000 barrel-per-day capacity, inflation escalators run at 2.5%, and contracts largely renew on current terms, holding earnings for 15 years after year 10 before fading. That is worth about $5.1 billion as a business, or $28.64 a share after debt. What could make this wrong. Upward: if the sustaining capital the network actually needs is materially below $145 million a year, or if Speedway phase II signs contracts, value rises meaningfully. Downward: if the first half of 2026 was flattered by working capital or by acquired businesses that have not yet needed reinvestment, the level is too high; seismic restrictions; and conflicts with LandBridge and the sponsor, who control both companies and set the terms of the pore-space agreements. Changes since our previous analysis. The previous figures were built on a different basis and are not comparable. On the business itself, the combined company's first full half-year of results (revenue up to $418.7 million and operating cash flow of $160.0 million for January to June 2026) is now available and replaces the partial-year and predecessor-only figures, and the Speedway Pipeline is approaching its third-quarter 2026 in-service date. Margin-of-safety price. We are not very sure of the earnings level: it rests on two quarters of combined results and an estimate of sustaining capital the company does not disclose, and a $40 million a year error in either direction moves value by about $5 a share. The worst plausible event is a deep Permian downturn coinciding with injection limits in seismic zones while the $825 million of 2030 notes come due; the structure would likely survive it because the contracts are long, the customers are large investment-grade producers, and the assets are hard, but shareholders would be diluted or wait years. If we are wrong about sustaining capital and about the pace of Speedway's fill, the shares look worth around $10-12; if a downturn also arrives, near the bear case's $3. The business pays a small dividend (about $12 million to Class A holders in the first half of 2026), so most of the return has to come from the value being recognized, and the price assumes a three-to-five-year holding period. For a 20% annual return over four years from $9, the shares would need to be worth about $18-19 by then, which is roughly where the base case sits today plus a few years of retained cash and debt reduction; at that price a mild downturn still leaves the base case reachable, and the hard assets and long contracts support the value. The margin-of-safety price is $9.00.