Chevron CEO confirms unreported Strait of Hormuz attacks, warns shipping confidence fragile despite ceasefire talks
Mike Wirth's rare public disclosure of undisclosed vessel incidents signals corporate risk assessment diverges from market optimism as Trump weighs Iran deal.
Chevron CEO Mike Wirth confirmed Friday that vessels have been attacked in the Strait of Hormuz this week in incidents not previously reported, marking a rare corporate acknowledgment that elevates maritime security threat assessment as oil markets price in a ceasefire that has yet to materialise.
“There still has been kinetic activity this week, some of which has been reported in the media — some of which has not,” Wirth told Bloomberg Television. “We see risks very real still in that environment.” The disclosure comes as Brent crude fell to $92.56 per barrel on Thursday, down nearly 20% from April peaks above $138, driven by investor optimism over a 60-day memorandum of understanding between the U.S. and Iran that President Trump has yet to approve.
Energy majors rarely confirm attacks publicly without operational necessity or regulatory triggers. Wirth’s statement breaks months of corporate silence on Hormuz security incidents and suggests the gap between diplomatic momentum and operational reality remains wide. Chevron currently operates six chartered vessels in Persian Gulf waters, per Insurance Journal.
“There have been vessels that have been in transit that have suffered attacks. They’re maybe not every day, but there have been multiple incidents that have occurred.”
— Mike Wirth, Chevron CEO
Market disconnect: diplomacy versus kinetic reality
Oil prices tumbled in May, the steepest monthly decline since the Covid-19 pandemic, as negotiators finalised a ceasefire framework. Yet Iranian forces fired ballistic missiles at Kuwait and dispatched attack drones toward the Strait on Thursday, according to CNBC, which also reported that UBS analysts see “little evidence” of near-term improvement in vessel traffic through the chokepoint.
Shipping traffic through the Strait dropped to 10% of pre-war levels as of late May, per OilPrice.com. Iran crude loadings remain below 0.3 million barrels per day this month, down from 1.5 million barrels per day in April. More than 14 million barrels per day of oil — roughly 15% of global supply — now sits shut in due to the Strait closure, according to the International Energy Agency, which reported that global supply fell 1.8 million barrels per day in April to 95.1 million barrels per day.
14+ mb/d
-90%
-19%
0.3 mb/d
Why corporate disclosure matters now
Wirth’s comments frame the operational challenge facing any ceasefire: restoring shipowner confidence. “Shipowners have to be comfortable sending ships back in after having ships trapped for months and crews trapped for months,” he told Transport Topics. “They may or may not be willing to move all of their vessels back in.”
The Strait of Hormuz handles approximately 20% of global seaborne oil trade under normal conditions — roughly 20 million barrels per day pre-conflict. Iran imposed a blockade in late February following U.S.-Israeli strikes, trapping vessels and crews for weeks. Even as diplomatic negotiations advanced this month, insurance premiums and Maritime Security costs have remained elevated, creating structural barriers to traffic resumption independent of any ceasefire timeline.
Chevron’s acknowledgment of unreported attacks suggests Iranian forces retain operational capability and willingness to target commercial shipping despite active negotiations. The pattern diverges from typical conflict wind-down trajectories, where kinetic activity declines ahead of formal agreements.
The U.S. and Iranian negotiators reached a 60-day memorandum of understanding to extend the ceasefire, pending Trump’s final approval, according to Axios. Trump has demanded Iran “never have a Nuclear Weapon or Bomb” and that “the Hormuz Strait must be immediately open, no tolls, for unrestricted shipping traffic, in both directions.” Iranian state media reports conflicting terms regarding uranium enrichment deposits and frozen asset releases, indicating fundamental disagreements remain unresolved.
Trump’s approval calculus
The 60-day MOU framework awaits presidential sign-off amid contradictory statements from Washington and Tehran. Trump’s public demands for immediate Hormuz reopening and permanent nuclear disarmament clash with Iranian negotiating positions on uranium stockpile management and sanctions relief sequencing. The gap between stated requirements and achievable terms complicates approval probability.
Markets have priced in ceasefire implementation ahead of political resolution. Brent’s retreat from April highs reflects expectations that Hormuz flows will resume within weeks, restoring the 14+ million barrels per day currently offline. Wirth’s disclosure introduces operational friction: even if diplomats agree to terms, physical restoration of shipping lanes requires de-mining operations, security escort protocols, and insurance framework renegotiation — processes that extend across months, not days.
- Chevron CEO confirmed multiple unreported vessel attacks in Strait of Hormuz this week despite ceasefire negotiations
- Shipping traffic remains at 10% of pre-war levels; 14+ million barrels per day of oil supply offline
- Oil Markets down from April peaks on diplomatic optimism, but corporate risk assessment signals operational restoration will lag any political agreement
- Trump has yet to approve 60-day MOU; fundamental disagreements on nuclear terms and Hormuz control persist
What to watch
Trump’s decision on the MOU, expected within days, will determine whether the diplomatic rally sustains or reverses. Watch for disclosure patterns from other energy majors — if Shell, BP, or ExxonMobil executives confirm similar unreported incidents, it signals a broader reassessment of Hormuz transit risk independent of ceasefire frameworks. Iranian crude loading data for early June will provide the first hard evidence of whether physical flows respond to diplomatic momentum. Insurance premium movements in the London marine market offer real-time signals of shipowner confidence ahead of official traffic statistics. Any resumption of Hormuz shipping will likely follow a staged approach: escorted convoys, restricted transit windows, and elevated security protocols that limit throughput well below the pre-war 20 million barrels per day baseline for quarters, not weeks.