# CleanSpark Mined 529 Bitcoin in September After $2.276 Billion Debt Deal By John Kim Canonical URL: https://www.tokenpost.com/news/business/28954 Published: 2026-10-09T12:44:11.000Z Updated: 2026-10-09T12:44:11.000Z Section: Business > The miner held 13,530 BTC at month-end and will replace monthly operating updates with quarterly reports. CleanSpark mined 529 Bitcoin (BTC) in September 2026 and held 13,530 BTC at month-end after completing a previously announced $2.276 billion senior secured note offering. The company will use the financing to cover remaining construction costs at its Sandersville data center, reimburse certain prior equity contributions and establish debt-service reserves. CleanSpark had signed a 20-year lease valued at $6.6 billion for the project. The senior secured notes mature in 2031 and carry a 7.875% annual interest rate. CleanSpark [completed the $2.276 billion senior secured note offering]() through the financing. The September 2026 operating figures were unaudited. CleanSpark will move to quarterly operating updates aligned with the energy and data-center industries and discontinue its monthly releases. ## Links in this article - [completed the $2.276 billion senior secured note offering](https://www.tokenpost.com/news/business/24496)