Chiesi USA Data Breach Lawsuit Investigation
On December 22, 2025, specialty-pharmaceutical company Chiesi USA notified regulators of a data security incident that compromised personal information belonging to hundreds of individuals. If you received a breach letter, you may be entitled to compensation and identity-protection services—complete our free case evaluation today.
Key Details at a Glance
- Date notice sent to consumers: December 22, 2025
- Affected individuals: 262 (Massachusetts residents)
- Free services offered: 24 months of Experian credit monitoring and identity restoration (enroll by March 31, 2026)
- Regulator notified: Massachusetts Attorney General
What Happened?
According to the consumer notice, Chiesi USA, Inc. (“Chiesi USA”) discovered a cybersecurity incident involving its network. The company’s investigation—conducted with the assistance of third-party cybersecurity specialists—concluded that unauthorized activity exposed certain files containing personal information.
Information Exposed
Chiesi USA’s filing with the Massachusetts Attorney General lists the following data elements as potentially compromised:
- First and last name
- Social Security number
- Driver’s license number
- Financial account information
- Medical information
The company states that it has no evidence of misuse but encourages affected individuals to remain vigilant.
Company Response
In response to the incident, Chiesi USA reports that it:
- Secured its environment and completed a forensic investigation with external experts
- Implemented additional technical safeguards to bolster system security
- Offered 24 months of complimentary credit monitoring and identity-restoration services through Experian
Your Options and Next Steps
- Enroll in free protection. Activate the Experian services by March 31, 2026, using the instructions in your mailed notice.
- Monitor accounts. Review bank, credit-card, and insurance statements for unauthorized transactions.
- Request a case review. Use our secure form to learn whether you can pursue compensation through a Chiesi USA data breach lawsuit.
Company Overview
Chiesi USA, Inc. is the U.S. affiliate of Italy-based Chiesi Farmaceutici S.p.A., focusing on specialty therapies in neonatology, rare diseases, and respiratory care.
- Website: chiesiusa.com
- Headquarters: 175 Regency Woods Pl., Suite 600, Cary, NC, USA
- Industry: Pharmaceutical manufacturing
- Parent company: Chiesi Farmaceutici S.p.A.
- Social: LinkedIn, Instagram
Frequently Asked Questions
I received a data breach letter from Chiesi USA — what should I do?
Activate the complimentary Experian credit-monitoring service before the March 31, 2026 deadline, keep a close eye on your financial accounts, and contact us for a free legal evaluation.
How do I submit a claim related to the Chiesi USA data breach?
Fill out our online form. A data-breach attorney will review your circumstances and explain any rights to monetary recovery.
What information did the Chiesi USA breach expose?
The notice lists name, Social Security number, driver’s license number, financial account data, and medical information as potentially affected.
Did Chiesi USA offer credit monitoring, and for how long?
Yes. The company is providing 24 months of Experian credit-monitoring and identity-restoration services at no cost.
How many people were affected by the Chiesi USA breach?
The Massachusetts Attorney General filing states that 262 individuals were impacted.
How can I get the official breach notice (PDF) for Chiesi USA?
You can access the full PDF directly from the “Download Official Breach Notice” button above.
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