NATURAL RESOURCE PARTNERS LP (NRP) stock intrinsic value fair value estimate & owner earnings analysis

Natural Resource Partners is a landowner, not a miner. It owns coal and mineral rights across Appalachia, the Illinois Basin and the Powder River Basin, and leases them to operators — Alpha Metallurgical Resources, Foresight, Alabama Kanu and others — who do the actual mining and pay NRP a royalty on every ton produced. NRP also owns a 49% stake in Sisecam Wyoming, one of the world's largest and lowest-cost producers of soda ash, mined from a trona deposit in Wyoming's Green River Basin. Because NRP itself doesn't operate mines, it carries almost no capital-spending burden of its own — the operators bear that cost — which is unusual and valuable for a resource business. One structural note: NRP is a limited partnership, so what would be "earnings per share" at a corporation is "owner earnings per unit" here, and "shares" are "common units." The business used to carry a much heavier debt and preferred-equity load. As recently as 2021, NRP had roughly $430 million of debt and $250 million of preferred units outstanding that paid a fixed cash coupon ahead of common unitholders. Both are now gone: the preferred units were fully redeemed by 2024, and debt has been paid down to roughly $33 million against $632 million of partners' capital — a leverage ratio the company itself puts at about 0.2x. That transformation matters here: this valuation is built from the last five years, which capture NRP as it exists today on a much cleaner balance sheet, rather than the more heavily indebted business of a decade ago. One accounting judgment worth flagging: in the years the preferred units were outstanding, we subtracted their cash distributions from owner earnings before dividing by common units, since preferred holders had a claim on cash ahead of common unitholders. That structure is now fully gone. The cash-flow math reconciled cleanly to the reported figures with no unexplained gap. What drives the numbers. Coal is the large majority of revenue, and metallurgical coal (used in steelmaking) made up about 65% of coal royalty revenue in 2025. Coal is, in the company's own words, "a finite and declining resource" — but a long-lived one, and one where the moat sits with the land, not the operator: several of NRP's properties have already survived multiple operator bankruptcies over the decades (Alabama Kanu picked up the Oak Grove mine in 2024 after three prior operators had failed there), and NRP kept its royalty each time because it owns the minerals, not the mine. Soda ash is the smaller, second piece, and it has been rough lately. A wave of new Chinese soda ash capacity has left the global market oversupplied, and Sisecam Wyoming stopped sending cash distributions to NRP in the back half of 2025. Management does not expect distributions to resume "for several years," and in February 2026 NRP had to put in additional capital (about $39 million for its share) to help the joint venture's balance sheet through the downturn. The genuine long-term positive is that Sisecam Wyoming's own reserves are enormous — enough trona to keep mining at current rates for roughly 50 more years — so the question is really about timing of a recovery, not whether the resource is still there. Coal and soda-ash prices are both near the low end of their recent range, and we have held prices flat at those levels in every case below. What actually separates the cases is production volume, which operators keep leasing, and how long the soda-ash oversupply persists — not a bet on where commodity prices go next. We built owner earnings from operating cash flow, backing out the swings from working capital and unit-based compensation. Because NRP doesn't mine anything itself, its own capital spending is close to zero in most years, so nearly all of adjusted operating cash flow is available to owners. We measured this from 2021 through 2025 — the five years since the balance sheet was substantially repaired — and used the median of that span, about $13.38 per unit, as the normalized starting point. Owner earnings swung sharply over that span, from about $5 per unit in 2021 to about $17.65 in 2023 (the peak of the post-pandemic coal and soda-ash price cycle) back down to about $11.40 in 2025 — a reminder that this is a cyclical, commodity-linked business, not a steady annuity. Base case assumes coal royalty volumes roughly hold at 2025's level — gains in the Illinois Basin and Northern Appalachia offsetting ongoing declines in Central Appalachia — and assumes Sisecam Wyoming's distributions stay suspended for a few more years before resuming modestly. Coal royalty income is faded out gradually over about 20 years to reflect real depletion, since NRP does not publish a specific reserve life for its coal properties; the soda-ash contribution is carried out closer to 40 years, inside Sisecam Wyoming's own disclosed 50-year reserve life. This comes to roughly $140 per unit. Bear case assumes the already-declining coal regions keep declining without offsetting growth elsewhere, that one of NRP's three largest lessees (together 58% of Mineral Rights revenue) idles or exits a leased mine at some point over the next ten years, and that Sisecam Wyoming's distributions stay off for the entire ten-year window, with NRP's recent capital contribution treated as money that doesn't come back. That comes to roughly $84 per unit. Bull case assumes the volume growth already showing up in the Illinois Basin and Northern Appalachia continues for a few more years while the declining regions stabilize rather than keep shrinking, and that Sisecam Wyoming gains volume share and returns to distributions sooner and more fully as higher-cost competitors are forced out. That comes to roughly $215 per unit. Given the cyclicality, the concentration in a handful of large lessees, and a joint venture currently working through a real, ongoing downturn, the margin-of-safety price sits at a meaningful discount to the base case — around $75 per unit, which sits below even the bear-case estimate. The much-improved balance sheet is a real risk-reducer relative to NRP's own history, but it doesn't offset commodity-price and lessee-concentration risk, which is why the discount stays large.