4 Major Domestic Refiners Indicted for Artificially Spiking Gas Prices

"A Company Living Off War" — Inside the 26-Trillion-Won Price-Fixing Scandal of South Korea's 4 Major Oil Refiners

While citizens sighed over skyrocketing prices at gas stations, employees at major oil refineries were celebrating. Federal prosecutors have exposed a massive corporate cartel involving South Korea’s four dominant oil refiners—HD Hyundai Oilbank, SK Energy, GS Caltex, and S-Oil—who control 98.6% of the domestic market. Exploiting the geopolitical chaos of the US-Iran war, these companies staged an artificial price explosion despite holding massive, cheap crude oil reserves, driving domestic gas prices up by 40% in just a single week.

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1. Sufficient Reserves but 40% Sudden Hikes: The 26-Trillion-Won Economic Sabotage

The Fair Trade Investigation Division of the Seoul Central District Prosecutors' Office (led by Senior Prosecutor Na Hee-seok) announced the criminal indictment of the four major refiners and their key executives. According to the investigation, when the US-Iran war intensified on February 28, the refiners faced no immediate supply pressure. However, they weaponized the crisis to lock in historic profit margins through a highly calculated, illicit price-fixing ring.

The core conspiracy was engineered by HD Hyundai Oilbank and SK Energy. Executives from both companies coordinated wholesale price adjustments, agreeing that SK Energy would anchor its prices 30 to 40 KRW per liter higher than Hyundai Oilbank to lift the entire market. The direct collusion volume between these two giants reached 14.2 trillion KRW. When accounting for the "conscious parallelism" of GS Caltex and S-Oil—who immediately matched these hyper-inflated benchmarks—the total anti-competitive impact reached a staggering 26 trillion KRW.

2. "Long Live Trump, We'll Make 2 Trillion": Inside Chats Reveal Shameless Profiteering

As average domestic gasoline prices breached 1,800 KRW per liter and President Lee Jae-myung ordered emergency crackdowns against unconscionable corporate profiteering, refinery staff were privately boasting about the windfall. Internal corporate messenger logs seized from S-Oil’s pricing division shock the public conscience. Employees wrote: "Raising the price by another 100 won today. Looks like we’ll clear 2 trillion won this year," and "As expected, a company that lives off war. Long live Trump."

The cartel went so far as to systematically deceive the federal government. To hide their price-gouging, the refiners submitted falsified daily transaction reports to the Ministry of Trade, Industry and Energy (MOTIE), intentionally logging wholesale prices far below actual distribution figures. On the very day the President issued a stern warning against market manipulation, HD Hyundai Oilbank quietly fed premium price hike coordinates directly to its co-conspirator, SK Energy.

Refiner	Collusion & Anti-Competitive Actions Uncovered	Prosecution Action & Legal Status
HD Hyundai Oilbank	• Exchanged sensitive pricing data with SK Energy since July 2024. • Led the secret agreement to hike prices post-war breakout.	• Corporate Entity Indicted • Head of Pricing arrested and indicted. • Legal Chief and Manager indicted.
SK Energy	• Formed a 14.2-trillion-won direct pricing cartel with Hyundai Oilbank. • Drafted internal strategies to prevent price drops across the market.	• Exempt from Prosecution • Granted full immunity via Leniency Program after confessing.
GS Caltex	• Exploited the artificial price ceiling via conscious parallelism. • Deleted core internal pricing chatrooms prior to an FTC raid.	• Corporate Entity Indicted (Retail Abuse) • Domestic Sales Chief indicted for evidence destruction.
S-Oil	• Chased cartel-driven price spikes while celebrating internally. • Maintained illegal, restrictive supply pacts with independent stations.	• Corporate Entity Indicted (Retail Abuse) • Escaped direct price-fixing charge due to lack of direct pact proof.

3. Retail Bullying via Exclusive Pacts and Coordinated Evidence Destruction

The structural backbone of this monopoly relied on predatory "exclusive purchase contracts" forced onto independent gas stations. Despite clear Supreme Court precedents prohibiting refiners from locking retailers into single-source purchasing against their will, the four giants exploited their 98.6% market dominance. They unilaterally dictated retail margins and slapped independent operators with massive lawsuits and heavy financial penalties if they were caught blending cheaper, alternative products from competitors.

When regulators began sniffing out the cartel, the refiners immediately switched to corporate damage control. Ahead of a surprise on-site inspection by the Fair Trade Commission (FTC) in March, HD Hyundai Oilbank's Legal Chief C systematically wiped internal databases containing competitor pricing trackers. Similarly, GS Caltex’s Domestic Sales Chief D ordered the immediate deletion of an internal corporate messenger room used to coordinate price-hike strategies to block forensic investigators.

The Bitter Reality of Leniency: SK Energy Walks Away Free The most frustrating aspect of the prosecution's announcement is the complete immunity granted to SK Energy. Despite orchestrating a multi-trillion-won cartel that drained billions from working-class households, SK Energy and its executives avoided criminal indictment by exploiting the "Leniency Program"—a whistleblowing mechanism that grants immunity to the first cartel member to turn in its co-conspirators. Meanwhile, GS Caltex and S-Oil avoided direct price-fixing charges due to the high legal threshold required to prove "conscious parallelism," leaving them to face lesser charges related only to retail trade abuses.

4. Refiners Bet on a Historic Legal Replay: The Battle Ahead

Refusing to issue official apologies, the refiners are massing elite legal teams for a fierce courtroom battle. Industry insiders note that the refiners are banking on replicating their historic 2011 legal victory. In 2011, the FTC levied record-breaking fines against the same refiners for price-fixing, but the companies dragged the case to the Supreme Court and ultimately won a complete overturn on the grounds of "insufficient objective evidence."

However, prosecutors remain highly confident this time around. Armed with unedited internal chat logs, a full confession from SK Energy through leniency, and hard proof of fraudulent reports submitted to MOTIE, the prosecution holds definitive smoking guns. The Seoul Central District Prosecutors' Office stated, "We will commit all available resources to secure maximum sentencing for these defendants who destabilized national energy security during a global crisis, and we will collaborate heavily with MOTIE to dismantle this corrupt market structure once and for all."

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[🔍 Key Takeaways from the Oil Refiner Price-Fixing Scandal]

• Crisis Profiteering: Spiked domestic fuel prices by 40% within a single week by fixing rates, despite holding vast, low-cost crude oil reserves.
• 26-Trillion-Won Cartel Impact: Hyundai Oilbank and SK Energy engaged in a 14.2T won direct pricing pact, while GS Caltex and S-Oil shadowed the hikes.
• Damning Internal Logs: Shocking employee chats exposed: "A company living off war, long live Trump" and "We'll clear 2 trillion won this year."
• Government Deception: Fed intentionally deflated daily price reports to MOTIE to blindside federal monitoring and presidential reporting lines.
• Destruction & Betrayal: Executives deleted internal databases and chatrooms right before FTC raids. SK Energy escaped all criminal charges via leniency immunity.

July 6 2026, Oil Refiner Cartel, Gas Price Spike Reason, HD Hyundai Oilbank Indicted, SK Energy Leniency, GS Caltex, S-Oil, Conscious Parallelism, Exclusive Supply Abuse, Evidence Destruction