ALEX SPIRO FILES DEFAMATION SUIT AGAINST SHORT SELLER ON BEHALF OF TECNOGLASS

Tecnoglass (NYSE: TGLS) and its co-founders have filed a federal defamation lawsuit against short seller Christian Lamarco and Shadyside Partners (d/b/a Culper Research) in the Southern District of New York.

Rhea-AI Summary

Tecnoglass (NYSE: TGLS) and its co-founders have filed a federal defamation lawsuit against short seller Christian Lamarco and Shadyside Partners (d/b/a Culper Research) in the Southern District of New York. The lawsuit alleges that Culper Research deliberately published false claims connecting Tecnoglass and its executives to the Sinaloa cartel.

The complaint states that Culper Research profited from short positions by spreading fabricated allegations based on supposedly "intelligence" documents that Mexican authorities have confirmed as inauthentic. The plaintiffs are seeking damages, attorneys' fees, and an injunction requiring removal and retraction of the defamatory statements.

Positive

• None.

Negative

• Stock price and company reputation damaged by short seller allegations
• Legal proceedings could be lengthy and costly
• Negative publicity from allegations may continue to affect market perception

Argus Sep 10 session

+1.38% close to close Open Argus

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On Sep 10, the day this news came out, TGLS closed 1.38% above the previous close.

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NEW YORK, Sept. 10, 2025 /PRNewswire/ -- Alex Spiro announced that yesterday he has filed a federal defamation lawsuit in the Southern District of New York on behalf of Tecnoglass Inc. (NYSE: TGLS) and its co-founders and executives, José and Christian Daes. The complaint names short seller Christian Lamarco and his firm Shadyside Partners, LLC (d/b/a Culper Research), alleging they deliberately published false claims linking Tecnoglass and its executives to the Sinaloa cartel.

The filing asserts that Culper Research profited from short positions by spreading fabricated allegations sourced from purported "intelligence" documents that the Mexican government has publicly confirmed are inauthentic.

The complaint also notes this is not the first time Lamarco and Culper Research have faced defamation suits of this nature. The report caused immediate damage to Tecnoglass's share price and reputation. The plaintiffs seek damages, attorneys' fees, and an injunction requiring the removal and retraction of the defamatory statements.

The case is Tecnoglass Inc. v Lamarco, 25-cv-7450, U.S. District Court, Southern District of New York.

About Quinn Emanuel
Quinn Emanuel Urquhart & Sullivan, LLP is a 1000+ lawyer business litigation firm—the largest in the world devoted solely to business litigation and arbitration with 34 global office locations. Surveys of major companies around the world have named it the "most feared" law firm in the world three times. Firm lawyers have tried over 2,500 cases, winning 86% of them. When representing defendants, Quinn Emanuel's trial experience gets better settlements or defense verdicts. When representing plaintiffs, Quinn Emanuel lawyers have won nearly $80 billion in judgments and settlements. Quinn Emanuel has also obtained seven nine-figure jury verdicts, four 10-figure jury verdicts, 51 nine-figure settlements, and 20 10-figure settlements. 

Quinn Emanuel has been named the No. 1 "most feared" law firm by The BTI Consulting Group three times in its annual "Most Feared Law Firms in Litigation" guide, in which in-house counsel named 46 firms they "want to steer clear of" when it comes to litigation. The American Lawyer named Quinn Emanuel the top IP litigation firm in the U.S. and the firm as one of the top six commercial litigation firms in the country. The UK legal periodical, The Lawyer named us "International Firm of the Year." Law360 has most recently selected us as having Banking, Class Action, International Arbitration, and Trials "Practice Groups of the Year." Managing IP twice recognized us as having the "Best ITC Litigation Practice" and honored us with the "Patent Contentious West" award. Legal Business has named us "US Law Firm of the Year" three times, and our German offices have twice been named both "IP Litigation Firm of the Year" and "Patent Litigation Firm of the Year" by JUVE, Germany's most prestigious legal publication. Global Investigations Review, a leading legal periodical covering global white-collar investigations, named us the "Most Impressive Investigations Practice of the Year." Global Arbitration Review named us the 3rd best arbitration practice in the world. Global Competition Review named our antitrust and competition practice among the "25 Global Elite," and has included us in their list of the world's top 10 competition litigation practices. 

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SOURCE Quinn Emanuel Urquhart & Sullivan, LLP

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What legal action has Tecnoglass (TGLS) taken against Culper Research?

Tecnoglass has filed a federal defamation lawsuit in the Southern District of New York against Christian Lamarco and Shadyside Partners (Culper Research) for publishing allegedly false claims connecting the company to the Sinaloa cartel.

What damages is Tecnoglass (TGLS) seeking in its lawsuit against the short seller?

Tecnoglass is seeking monetary damages, attorneys' fees, and an injunction requiring the removal and retraction of the allegedly defamatory statements.

How has the short seller report affected Tecnoglass (TGLS) stock?

The report caused immediate damage to Tecnoglass's share price and corporate reputation according to the lawsuit filing.

What evidence supports Tecnoglass (TGLS) in its defamation lawsuit?

The Mexican government has publicly confirmed that the 'intelligence' documents used by Culper Research to make its allegations against Tecnoglass are inauthentic.

Who is representing Tecnoglass (TGLS) in the defamation lawsuit?

Alex Spiro of Quinn Emanuel Urquhart & Sullivan, LLP, a leading business litigation firm with a 86% trial success rate, is representing Tecnoglass in the lawsuit.