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Listed on a ransomware leak site

MatTek

mattek.com

MatTek was listed on the The Gentlemen leak site on Jul 23, 2026. Information as of Oct 19, 2026.

Country: United StatesIndustry: Technology
Updated continuously · figures as of Oct 19, 2026
Claimed by
The Gentlemen
First listed
Jul 23, 2026
Claims recorded
1

Leak-Site Claim.

The GentlemenConfirmed claim
Posted on the leak site
Jul 23, 2026
Collected by Brandefense
Jul 23, 2026
Data claimed
Not stated
Leak-site post text, written by the group
***.com zoominfo.com/c/mattek-corp/[removed] MatTek Corporation is a pioneering biotechnology company founded in 1985 and headquartered in Ashland, Massachusetts, specializing in the development of innovative in vitro 3D reconstructed human tissue models. They produce advanced microtissues and cell culture products that are widely used by researchers to accelerate drug development, conduct toxicity testing, and replace traditional animal testing. Originally an independent leader in tissue engineering, the company was recently acquired by the global life science supplier Sartorius and now…

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Figures as of Oct 19, 2026. Confirmed leak-site claims collected by Brandefense technologies and validated by Brandefense analysts.

Listed on a leak site means a ransomware group has claimed the company; it is not a confirmed breach. To request a correction or removal, contact Brandefense.