As a senior consultant to Media & Communications (Kagan), Ms. Armbrust has participated in the valuation of over $118 billion of media and communications properties during the past 30 years. She has prepared and/or presented testimony and acted as an expert witness in cable TV, broadcast and fixed and mobile wireless related litigations. Ms. Armbrust is also senior analyst for Media & Communications’ Wireless Investor Service, electronically delivered economic and financial research for the mobile wireless and tower industry sectors. Full Bio

As a senior consultant to Media & Communications (Kagan), Ms. Armbrust has participated in the valuation of over $118 billion of media and communications properties during the past 30 years. She has prepared and/or presented testimony and acted as an expert witness in cable TV, broadcast and fixed and mobile wireless related litigations. Ms. Armbrust is also senior analyst for Media & Communications’ Wireless Investor Service, electronically delivered economic and financial research for the mobile wireless and tower industry sectors.

Ms. Armbrust was formerly the Chief Operating Officer for Media & Communications’s Research and Senior Financial Analyst for a half dozen of the group's investment newsletters — Cable TV Investor: Deals & Finance, Wireless Telecom Investor, Wireless Market Stats, and Tower Investor. She was also executive editor of a number of the Media & Communications group's special reports, including The Cable TV Financial Databook, The PCS Atlas & Databook, The Cellular Telephone Atlas and The Wireless Telecom Financial Databook. Additionally, she organized and co-moderated wireless telecom and digital media investment conferences held periodically by Media & Communications Seminars. She has been engaged in this business since April, 1979, when she joined the firm, shortly after it moved to Carmel, CA.

Prior to joining S&P Global Market Intelligence, Ms. Armbrust held financial positions in the retail clothing and data processing industries. She holds a bachelor's degree (B.A.) in German and French literature from the University of Michigan and a Master of Arts (M.A.) in French & German literature and Master of Arts in Teaching (M.A.T.S.) from The Johns Hopkins University.

Areas of Coverage:
Wireless Industry M&A Research
Radio Spectrum Auction Analysis Minimize

As the tech policy reporter, Casey has covered policy developments in Congress and at the FCC around 5G spectrum, 5G network security, content moderation and privacy. Full Bio

As the tech policy reporter, Casey has covered policy developments in Congress and at the FCC around 5G spectrum, 5G network security, content moderation and privacy. He has also produced a four-part series on telehealth that highlighted how access to high-speed broadband internet is crucial to the adoption of telehealth. Minimize

Julber Osio is a Research Analyst at Kagan, a media research group within the Telecommunications, Media and Technology (TMT) offering of S&P Global Market Intelligence. Full Bio

Julber Osio is a Research Analyst at Kagan, a media research group within the Telecommunications, Media and Technology (TMT) offering of S&P Global Market Intelligence. Mr. Osio has been with S&P Global Market Intelligence since 2015. He pioneered the expansion of Kagan's global mobile industry research coverage in Asia-Pacific, providing industry projections and insights on regulation and policymaking. His areas of expertise include mobile 5G, spectrum, towers and small cells, financial technology and consumer insights.

Mr. Osio graduated with a degree of BSc in Management Engineering, Minor in Japanese Studies from Ateneo de Manila University, Philippines. He is currently studying MSc in Data Science and Financial Technology at the University of London, United Kingdom. Mr. Osio is a CFA charterholder. Minimize

Brian Partridge is a Research Director for the Applied Infrastructure & DevOps and Internet of Things research channels at 451 Research, a part of S&P Global Market Intelligence. Full Bio

Brian Partridge is a Research Director for the Applied Infrastructure & DevOps and Internet of Things research channels at 451 Research, a part of S&P Global Market Intelligence. In these roles, Brian has overall responsibility for channel research deliverables and team management. As a researcher he actively contributes to the Internet of Things (IoT), cloud-native technologies, 5G and edge computing research agendas and has subject matter expertise in telecom infrastructure and enterprise networking domains.

Brian joined 451 Research with the company's acquisition of mobility research firm Yankee Group in 2013. Prior to nearly 10 years at Yankee Group, Brian held various senior-level marketing and sales roles at leading technology vendors such as ReefEdge Networks, 3Com, Enterasys Networks and Cabletron Systems.

Partridge holds a BS degree in business administration from the University of New Hampshire and an MBA degree from Plymouth State University. Minimize