Complex sentence: Neilson Financial Services was founded in 2012 by Global CEO Gavin Donnelly having previously worked in the development of Hollard Financial Services Pty Ltd in Australia, which became the largest distributor of life insurance in the region.
Split into simpler sentences: Neilson Financial Services was founded in 2012 by Global CEO Gavin Donnelly. Donnelly had previously worked in the development of Hollard Financial Services Pty Ltd in Australia, which became the largest distributor of life insurance in the region.