---
title: Rhiannon Hornsey takes up new opportunity as Chief of Staff
description: Rhiannon Hornsey joins Santos as Chief of Staff after four years at Challenger, bringing experience across corporate affairs, sustainability and ESG.
---

[PR News ](https://insights.telummedia.com/pr-news)

# [Rhiannon Hornsey takes up new opportunity as Chief of Staff](https://insights.telummedia.com/pr-news/rhiannon-hornsey-takes-up-new-opportunity-as-chief-of-staff)

 Written by [Telum Media](https://insights.telummedia.com/pr-news/author/telum-media) | Oct 14, 2025 10:48:39 PM

Rhiannon Hornsey has joined global energy company, Santos as Chief of Staff. She was in the finance sector at Challenger for more than four years, most recently as Chief of Staff, responsible for leading its corporate affairs, sustainability and ESG functions. 

Rhiannon holds in-house experience within the insurance and banking sector, as well as agency-side at Weber Shandwick. 

[View full post](https://insights.telummedia.com/pr-news/rhiannon-hornsey-takes-up-new-opportunity-as-chief-of-staff)

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