ADNOC's Third Consecutive Murban Price Cut: How the US-Iran Hormuz Deal Reshaped Middle East Oil Pricing

1. The US-Iran Hormuz Agreement Collapsed the War Premium

On June 14-17, 2026, the United States and Iran announced and formalized a memorandum of understanding that included a 60-day cessation of hostilities and steps to reopen the Strait of Hormuz . The agreement also suspended US sanctions, allowing Iran to freely export its oil . That combination directly reduced the market's fear of a regional supply crunch .

The Strait of Hormuz, a choke point for nearly one-fifth of the world's oil and natural gas supply, had been effectively closed since the conflict began on February 28, 2026 . The agreement's provision to restore commercial shipping to pre-war levels within 30 days removed the single largest source of supply disruption risk .

2. Dubai and Murban Benchmarks Flipped Into Contango

After the US-Iran deal, the forward curves for Dubai and Murban crude shifted into contango for the first time since the war began . In a contango structure, future prices trade above prompt prices, signaling reduced concern about immediate crude availability .

Bloomberg reported on June 16 that the market pattern "indicates there's less concern about a lack of supply" . The shift was stark: Dubai's premium to swaps slipped into a discount of 46 cents on June 16, the first contango structure since January . Spot Oman and Murban differentials flipped into discounts of 67 and 49 cents respectively on the same day .

3. Weakening Physical Markets

Middle Eastern crude markets weakened as the Hormuz agreement created optimism that more oil would flow from the region . Reuters reported on June 23 that "Middle East crude benchmarks Oman, Dubai and Murban fell on Tuesday, as traders eyed rising supplies and the demand outlook remained tepid" . The Dubai market flipped into contango again, indicating ample supplies in the near term .

Asian refining demand, led by China, remained subdued after months of run cuts, adding further downward pressure on spot premiums . The combination of expected supply increases and tepid demand meant buyers no longer needed to pay elevated war-risk premiums for prompt barrels.

4. ADNOC's Pricing Response to Softer Regional Benchmarks

ADNOC's July Murban cut aligned with the broader decline in Middle Eastern crude sentiment and benchmark pricing after the deal . All four ADNOC export grades — Murban, Umm Lulu, Das, and Upper Zakum — were set at identical $101.48 per barrel levels for July, with zero differential applied across grades .

This mirrored a similar move by Saudi Aramco, which cut July OSPs for Arab Light crude to Asia by $6 per barrel from June . The synchronized nature of the cuts — both state oil companies reducing prices by similar magnitudes — reinforced that the repricing was regional rather than an isolated ADNOC adjustment.

5. Revised Supply Expectations

The sanctions relief component of the US-Iran agreement changed expectations for Iranian oil exports by allowing Iran to freely sell crude again . Market pricing then adjusted to the prospect of greater regional supply and less disruption risk around Hormuz .

ADNOC itself had made significant supply adjustments earlier. In June, the company cut Murban volumes to equity holders by an estimated 3-4 million barrels for July loading, with cuts ranging from 5% to almost 40% across different cargoes . However, by early July, most of those volumes were restored after the agreement . The company stated it had "maintained uninterrupted supply to our customers, with no cessation of Murban sales contracts or nominations in June and July" .

The Collective Logic

ADNOC's July OSP is best understood as a pass-through of this new pricing regime: the Middle East crude market repriced from a war-constrained, high-risk structure toward a post-agreement market with lower disruption risk and stronger expectations of available supply .

Outlook

Further OSP weakness would depend on whether the Hormuz reopening holds and whether Iranian barrels return to the market in meaningful volume . The 60-day negotiation period built into the agreement leaves considerable uncertainty about the final terms . For now, the market has priced in a significantly reduced risk premium — and ADNOC's consecutive cuts show the speed at which that repricing has occurred.