Val Russell is to stand down as CEO of Ayrshire's Chamber of Commerce this summer.
It follows almost 23 years of service, 11 of which were spent at the helm of the organisation.
During her tenure, the chamber has risen to become third-largest in Scotland, with Val's input hailed as "instrumental" in the growth of business projects across the region.
Appointment of a successor will commence in the coming weeks, with Ms Russell staying on to shadow in a part-time capacity.
She said: "I have had an amazing tenure at Ayrshire Chamber. I am proud to be leaving a strong and vibrant chamber and a hard-working dedicated team.
"I have had the honour of working with and learning from some amazing presidents and board members. However, working with the wide range of fantastic businesses across Ayrshire has been the greatest pleasure.
"Collaborating with many valuable stakeholders has allowed Ayrshire Chamber to truly work in partnership with both public and private sector organisations, all with a common aim to make Ayrshire a great place to do business. There is still much to do, and I wish the board and my successor every success."
Chamber president Frank Gormanley added: "Val has led and inspired her team to support members, drive new initiatives and help connect people and business to establish prosperous opportunities.
"A champion of young people; I applaud her inspiring approach with developing the future work force and passion to make a difference.
"An advocate for charities and the common good – Val has delivered so much on both a personal and business capacity with charities throughout Ayrshire.
"A well-known and respected face across Ayrshire, and indeed the Scottish business community – I am full of gratitude and respect for all that Val has made happen during her incredible service and dedication to the Ayrshire Chamber."
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