US sanctions Iranian financier accused of investing embezzled funds through Luxembourg

The United States has put Luxembourg's financial centre in the frame of its Iran sanctions campaign. The US Treasury's Office of Foreign Assets Control (OFAC) on Friday designated Ali Ansari, a Dubai-based Iranian banker it describes as a "key financier" for Iran's supreme leader, Mojtaba Khamenei — and said Ansari had invested "the Iranian people's money" in real estate and commercial properties "throughout Germany, Luxembourg, Spain, the United Kingdom, Cyprus, the United Arab Emirates, and beyond".

The action, reported by Reuters and AFP, came days after Iran resumed attacks on tankers in the Strait of Hormuz. Alongside Ansari, OFAC designated his Saint Kitts and Nevis holding company, Smart Global Limited, three Tehran currency-exchange houses accused of moving billions of dollars a year for sanctioned Iranian banks, seven of their partners, and front companies in Hong Kong and the United Arab Emirates — more than a dozen targets in all.

The Treasury alleges that Ansari "effectively institutionalized large-scale embezzlement within the Iranian regime", diverting publicly funded wealth into an overseas portfolio that enriched himself, regime elites and the Islamic Revolutionary Guard Corps (IRGC). Many of the interests registered in his name, the department said, are in reality held for the benefit of Khamenei and his family. All property of the designated persons within US jurisdiction is now blocked, and US persons are barred from dealing with them.

"The so-called Supreme Leader is hiding in seclusion while his regime crumbles. Treasury will continue using every tool at its disposal to isolate him and other regime elites from the global financial system," said US Treasury Secretary Scott Bessent.

A paper trail through Luxembourg holding companies

Friday's announcement did not detail the Luxembourg holdings. But a Financial Times investigation published in late January traced a European property empire worth roughly €400 million to Ansari through layers of shell companies — several of them registered in the Grand Duchy.

According to the FT, vehicles including Tidalwave Holdings in Luxembourg and Leopard Germany Bero 1 S.à r.l., a Luxembourg company linked to a German shopping-centre investment, sit in ownership chains that pass through several European jurisdictions before ending at Smart Global Limited — the St Kitts and Nevis parent, formerly named Ziba Leisure Limited, that OFAC has now blocked. Luxembourg registry records show one of the vehicles, Tidalwave Holdings II S.à r.l., was incorporated in January 2015 and is registered at an address in Windhof, west of the capital.

The portfolio identified by the FT includes:

• A dozen mansions on The Bishops Avenue in north London, bought for about £73 million in 2013, and a further mansion bought for £33.7 million in 2014;
• Two Hilton-branded hotels in Frankfurt;
• The Bero shopping centre in Oberhausen, Germany, valued at about €68 million;
• A 164-room Steigenberger golf and spa resort at Camp de Mar on Mallorca, valued at about €22 million;
• A stake in the five-star Schlosshotel in Kitzbühel, Austria.

Ansari denies wrongdoing. His lawyer, Roger Gherson, told the Financial Times earlier this year that his client "strongly denies" having any financial relationship with the Revolutionary Guard.

What Luxembourg can — and cannot — do

US designations have no direct legal force in the Grand Duchy. Luxembourg applies United Nations and European Union sanctions: the Ministry of Finance is the competent authority for enforcing financial restrictive measures, while the CSSF, the financial regulator, monitors their implementation by banks, funds and other supervised firms.

That leaves a gap in this case. Ansari is not on the EU sanctions list, according to the FT — so Luxembourg institutions are under no EU-law obligation to freeze assets linked to him. Britain, by contrast, sanctioned him on 30 October 2025 over his alleged role in financing the IRGC, imposing an asset freeze, a travel ban and a director disqualification days after Iran's central bank dissolved Ayandeh Bank, the failed lender in which he was principal shareholder. UK authorities have frozen more than £100 million of his real estate, The National reported. Neither the CSSF, the Ministry of Finance nor Luxembourg's financial intelligence unit had commented publicly on the US designation by Monday.

Washington's move still bites in practice. Under OFAC's long-standing "50 percent rule", any entity owned 50 per cent or more, directly or indirectly, by blocked persons is itself blocked — even if it never appears on a sanctions list. With Smart Global Limited designated, companies in its ownership chain, including any Luxembourg-registered vehicles it controls, become off-limits to US banks, dollar clearing and American counterparties.

A stress test for the fund and holding-company sector

The case lands on a financial centre whose core business is cross-border structures. Luxembourg's investment funds held €6,634 billion in net assets at the end of May, according to the CSSF, and holding companies domiciled in the Grand Duchy are routinely used to own property and businesses across Europe — which is precisely how, according to the FT, structures administered from Luxembourg came to hold hotels in Frankfurt and mansions in London for an investor now blacklisted in Washington and London.

US officials signalled that more enforcement is coming. "By targeting these networks, the United States is directly disrupting the regime's ability to access foreign currency," State Department spokesman Tommy Pigott said, according to AFP.

For Luxembourg professionals, the practical question is screening. Banks, fund administrators and corporate-services firms here typically check OFAC lists alongside EU ones, because losing access to the US dollar system is a risk few will run regardless of what EU law requires. The Ansari case — a UK- and US-sanctioned individual whose corporate vehicles sat in Luxembourg for a decade, according to the FT's reporting — is likely to sharpen attention on beneficial-ownership checks in the domiciliation industry, and on whether the EU eventually aligns its Iran listings with Washington's and London's. Sanctions designations are government allegations rather than court findings, and Ansari has not been charged in Luxembourg or the EU.