MARINE PETROLEUM TRUST (MARPS) stock intrinsic value fair value estimate & owner earnings analysis

Marine Petroleum Trust is a Texas trust that, through its wholly owned subsidiary Marine Petroleum Corporation, holds a small overriding royalty, three-quarters of 1% of the value at the well, on oil and gas produced from federal offshore leases in the Gulf of America off Louisiana. The leases were originally held by Chevron and are now predominately held by its assignees; Arena Energy, LP paid 100% of the trust's royalties in fiscal 2025 and fiscal 2026. The trust has no employees, spends nothing on drilling, cannot acquire new interests, and pays out what it collects after administrative costs. Its term runs to June 1, 2041 unless a majority of unitholders extend it, and holders of 80% of the units can end it sooner and sell the royalty. Because the trust keeps cash-basis books with no depreciation, capital spending or share-based pay, its owner earnings are simply its distributable income. Over the ten fiscal years to June 2026 that ranged from $0.08 a unit (fiscal 2021, oil near $40) to $0.69 (fiscal 2023, oil near $91), with a median of $0.34. That window covers a full oil-price cycle, so we use it as the anchor; fiscal 2022 also included a one-time $93,134 final distribution from the trust's former stake in Tidelands Royalty Trust "B". In fiscal 2026 distributable income was $0.33 a unit ($659,781), down from $0.36: royalty income fell 4% to $966,849 because the realized oil price dropped from $74.63 to $63.88 a barrel, while oil volumes actually rose about 11% to 14,076 barrels. Administrative costs of about $326,000 a year now absorb a third of royalty income, up from about $198,000 in fiscal 2017, and that fixed cost is the main reason the trust's value runs out before its underlying wells do. Implied oil volumes have drifted from about 18,400 barrels in fiscal 2017 to 12,700-14,100 barrels in fiscal 2024-2026, roughly a 3% annual decline. The active well count fell from 74 to 69 in the latest year, and no wells were drilled or recompleted in fiscal 2025 after nine in fiscal 2024. The trust has no access to the operators' reserve reports, so remaining reserve life cannot be confirmed from the filings. The trust has no debt. It held $950,667 of cash at June 30, 2026; we treat about one year of administrative costs ($326,000) as a working reserve and count the remaining $624,667, about $0.31 a unit, as cash belonging to unitholders. Each case values the royalty stream (royalties less administrative costs) at a flat 6%. Base case ($2.26 a unit): royalty income starts at fiscal 2026's realized prices (about $64 oil, close to the ten-year average), volumes decline 3% a year in line with the decade's record, and administrative costs rise 2.5% a year. The stream falls from about $0.30 a unit in fiscal 2027 to about $0.07 by fiscal 2041, when the trust term ends; nothing is credited after 2041 because an extension or sale is not assured. Fiscal 2026's 9% fall in distributable income came from the lower oil price, not lower volume; the base case holds that lower price rather than extending the fall, so year one declines about 6% from volume and cost alone. The royalty stream is worth about $1.95 a unit, plus $0.31 of net cash and no debt, for $2.26. Bear case ($1.02): a realized oil price of $55, a level the trust's realized price fell below in at least three of the past ten fiscal years (2017, 2020 and 2021); volumes declining 8% a year, consistent with the 7% drop in active wells in fiscal 2026 and no drilling under way; and administrative costs rising 3% a year. Royalties fall below administrative costs around fiscal 2035, after which the trust would have nothing to distribute, and no sale value is credited. This case also reflects the risk of relying on a single private payer, Arena Energy. The stream is worth about $0.71 a unit plus $0.31 of cash, for $1.02. Bull case ($4.63): realized oil of about $80, the average the trust actually received in fiscal 2022-2025; volumes declining only 1% a year, as they have roughly held since fiscal 2019 with the help of periodic recompletions such as the nine in fiscal 2024; and administrative costs rising 2% a year. The trust runs its full term to 2041, and the still-producing royalty is sold on termination for about three years of its income, as the trust agreement permits. The stream and sale are worth about $4.32 a unit plus $0.31 of cash, for $4.63. Compared with our previous analysis (bear $1.49, base $2.68, bull $4.33), the base and bear cases are lower because we now model administrative costs explicitly, since a fixed cost of about $326,000 a year consumes a growing share of a shrinking royalty, and because we start from fiscal 2026's lower realized oil price rather than the $0.40 a unit used before. The bull case is higher because it now credits the sale value of a still-producing royalty when the trust ends, and all cases are now discounted at the same 6% rather than at higher risk-adjusted rates, with risk carried in the spread between the cases instead. What would make this wrong: a faster production decline or financial trouble at Arena Energy would push value toward the bear case, while a sustained return to $80 oil or renewed drilling on the leases would push it toward the bull case. The margin-of-safety price of $1.00 sits at the bear case, reflecting a tiny, single-payer, depleting royalty with no reserve visibility and fixed costs that already take a third of its income.