About
T. "Rock" Mackie PhD, is co-founder and Chairman at HealthMyne, an imaging informatics company. Rock is a Director of Medical Devices (part-time) at the Mortgridge Institute for Research in Madison and Emeritus Professor in the departments of Medical Physics, Human Oncology, and Engineering Physics at the UW-Madison. In 1997, Rock co-founded TomoTherapy Inc., which developed an innovative, integrated hardware/software system for accurate, image-guided radiation treatment delivery. TomoTherapy’s initial public offering in 2007 reached a peak market capitalization of over $1.2 B under Rock’s leadership as chairman of the board of directors. Prior to its sale to Accuray, TomoTherapy’s cumulative revenues exceeded $ 1 billion. In 1992, Rock co-founded Geometrics, a HCIT company which developed the PinnacleTM Radiation Treatment Planning (RTP) system, now marketed by Philips Medical Systems. From 1996 until 2012, Pinnacle generated over $350 M in revenues and achieved a 45+% global market s
Position in the VCSift Database
- • 39 investors hold the Co-founder & Chairman role in VCSift. Thomas "Rock" Mackie is one of them.
- • 126 investors are based in Madison, Wisconsin, United States.
Data sourced from 410,343 investor profiles. Updated June 2026.
Investment Focus
- Stages
- seed
- Location
- Madison, US
Contact Information
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