A Republican congressional candidate owns a stake in a French-Swiss cement company accused of making payments to the Islamic State militant group in Syria, according to financial disclosures HuffPost reviewed. Greg Gianforte, the millionaire GOP contender for Montana’s open seat in the House, reported owning $47,066 worth of shares in LafargeHolcim as recently as December. The shares are in an individual retirement account at TWP, a brokerage firm and private wealth manager, on which he and his wife, Susan Gianforte, are listed as trustees. LafargeHolcim operated a factory in the north Syrian town of Kobane for three years after civil war broke out and most foreign companies fled. The company evacuated foreign employees in 2012, but kept the business going with local workers until ISIS fighters seized the factory two years later. Payments made to local armed groups to secure the factory may have unwittingly ended up in ISIS coffers, French newspaper Le Monde reported last year. CEO Eric Olsen resigned from the firm last month.

Housegov A screenshot of Greg Gianforte's stake in LafargeHolcim, listed in financial disclosure forms.

The revelation of Gianforte’s interest comes months after Republicans attacked 2016 Democratic presidential candidate Hillary Clinton because the Clinton Foundation had accepted from a donation of between $50,000 and $100,000 from LafargeHolcim. In August, the campaign of then-GOP presidential candidate Donald Trump hammered its Democratic rival for her ties to the firm. Breitbart News, the conservative news site that Steve Bannon led until he became White House chief strategist, criticized Clinton for sitting on the board of directors for LafargeHolcim’s North American division 25 years ago. “More than any major presidential nominee in modern history, Hillary Clinton is tied to brutal theocratic and Islamist regimes,” Stephen Miller, a senior Trump policy adviser, said at the time. “Now we learn she has accepted money from a company linked to ISIS.” Neither Shane Scanlon, a spokesman for Gianforte, nor the White House responded to requests for comment on Wednesday morning. The asset makes up a small segment of Gianforte’s diversified TWP account, which includes similar-sized stakes in eyeglass maker Luxottica, automaker Mitsubishi and various electrical utilities. Gianforte, who sold a software company to tech giant Oracle in 2011 for $1.5 billion, is worth between $65 million and $315 million.

William Campbell via Getty Images Donald Trump Jr., the president's eldest son, campaigned alongside Gianforte for the second time last week.