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Executive Team
Kieran McKenna
Chief Executive Officer
Kieran is the Chief Executive Officer (CEO) of Bank of Sydney, Australia (effective 1 July 2026).
Kieran joined Bank of Sydney in 2024 as Chief Risk Officer (CRO), responsible for ensuring the Bank’s risk management processes effectively protect our customers, employees and key stakeholders. He was appointed Acting CEO in November 2025 and CEO in July 2026.
He is an experienced leader with over 30 years’ within the Australian financial services sector, leading and shaping business, risk and compliance functions to support the achievement of business strategies. His previous leadership roles include: Chief Risk Officer with Cuscal, General Manager, Business Risk – Retail Division with Commonwealth Bank, Head of Risk – Retail (& Wealth) with Westpac Group and General Manager Risk at ASX.
He has been a Director of various Industry bodies throughout his career.
He holds a Master of Business Administration and Advanced Management Program qualification from Macquarie Graduate School of Management (MGSM). He is a Fellow of FINSIA and a Member of AICD.
Kieran is the Chief Executive Officer (CEO) of Bank of Sydney, Australia (effective 1 July 2026).
Kieran joined Bank of Sydney in 2024 as Chief Risk Officer (CRO), responsible for ensuring the Bank’s risk management processes effectively protect our customers, employees and key stakeholders. He was appointed Acting CEO in November 2025 and CEO in July 2026.
He is an experienced leader with over 30 years’ within the Australian financial services sector, leading and shaping business, risk and compliance functions to support the achievement of business strategies. His previous leadership roles include: Chief Risk Officer with Cuscal, General Manager, Business Risk – Retail Division with Commonwealth Bank, Head of Risk – Retail (& Wealth) with Westpac Group and General Manager Risk at ASX.
He has been a Director of various Industry bodies throughout his career.
He holds a Master of Business Administration and Advanced Management Program qualification from Macquarie Graduate School of Management (MGSM). He is a Fellow of FINSIA and a Member of AICD.
Huw Bough
Chief Banking Officer
Huw is the Chief Banking Officer (CBO), responsible for Retail Banking, Business Banking and Third-Party Distribution.
Huw is a seasoned Group Executive with more than 25 years industry experience in distribution, franchising, retail and intermediary channels. He has a deep understanding of business to consumer and business to business channels, with proven experience in successfully driving strategy and execution for both direct and broker channels. His previous roles included: General Manager of Banking MyState Bank, as well as a number of GM roles within the Westpac Group.
He holds a Diploma of Finance, and Mortgage Broking Management.
Huw is the Chief Banking Officer (CBO), responsible for Retail Banking, Business Banking and Third-Party Distribution.
Huw is a seasoned Group Executive with more than 25 years industry experience in distribution, franchising, retail and intermediary channels. He has a deep understanding of business to consumer and business to business channels, with proven experience in successfully driving strategy and execution for both direct and broker channels. His previous roles included: General Manager of Banking MyState Bank, as well as a number of GM roles within the Westpac Group.
He holds a Diploma of Finance, and Mortgage Broking Management.
Stella Grilis
Chief Financial Officer
Stella is the Chief Financial Officer (CFO) and responsible for managing the Finance, Treasury and Strategy & Execution Planning functions of the Bank. Stella joined the Bank in 2004 and has held the roles of Financial Control Officer, Management and Regulatory Accountant, Credit and Liquidity Risk Manager, and Acting Chief Risk Officer. She assumed the role of Acting CFO in November 2025 before being appointed Chief Financial Officer in July 2026.
Stella holds a Bachelor of Business from the University of Technology Sydney and a CPA designation.
Stella is the Chief Financial Officer (CFO) and responsible for managing the Finance, Treasury and Strategy & Execution Planning functions of the Bank. Stella joined the Bank in 2004 and has held the roles of Financial Control Officer, Management and Regulatory Accountant, Credit and Liquidity Risk Manager, and Acting Chief Risk Officer. She assumed the role of Acting CFO in November 2025 before being appointed Chief Financial Officer in July 2026.
Stella holds a Bachelor of Business from the University of Technology Sydney and a CPA designation.
Maria Karavias
Chief Customer Officer
Maria is the Chief Customer Officer (CCO) and responsible for Brand & Advertising, Customer Value Proposition, Customer Experience and Product Management for Bank of Sydney. Maria has over 25 years’ experience working for many of Australia’s leading companies within financial services, media, retail and business services to deliver exceptional customer and business outcomes.
Maria holds a Bachelor of Commerce from the University of Tasmania and an MBA from the University of NSW.
Maria is the Chief Customer Officer (CCO) and responsible for Brand & Advertising, Customer Value Proposition, Customer Experience and Product Management for Bank of Sydney. Maria has over 25 years’ experience working for many of Australia’s leading companies within financial services, media, retail and business services to deliver exceptional customer and business outcomes.
Maria holds a Bachelor of Commerce from the University of Tasmania and an MBA from the University of NSW.
Belinda Sathurayar
Chief People Officer
Belinda is the Chief People Officer (CPO) and responsible for driving the people agenda to achieve the Bank’s strategic goals. With over 20 years’ experience in human resource management within professional services, Belinda is a strategic people partner that drives the business throughout the employee lifecycle to attract, engage and retain the right talent in the Bank.
Prior to joining Bank of Sydney, Belinda has held various senior human resource leadership positions within assurance, financial, legal and accounting firms. Belinda has studied at the Australian Human Resources Institute and holds a Diploma in Management at the University of Sydney.
Belinda is the Chief People Officer (CPO) and responsible for driving the people agenda to achieve the Bank’s strategic goals. With over 20 years’ experience in human resource management within professional services, Belinda is a strategic people partner that drives the business throughout the employee lifecycle to attract, engage and retain the right talent in the Bank.
Prior to joining Bank of Sydney, Belinda has held various senior human resource leadership positions within assurance, financial, legal and accounting firms. Belinda has studied at the Australian Human Resources Institute and holds a Diploma in Management at the University of Sydney.
Diana Sitnikoski
Chief - Credit Operations
Diana is the Chief - Credit Operations (C-CO) and is responsible for Credit Operations, Credit Recovery and Management of Non-performing Loans. Diana joined Bank of Sydney as a Credit Manager in 2005 before assuming her current role in December 2016.
Diana brings with her more than 20 years’ experience in retail and commercial lending, and holds a Bachelor of Economics and a CPA designation.
Diana is the Chief - Credit Operations (C-CO) and is responsible for Credit Operations, Credit Recovery and Management of Non-performing Loans. Diana joined Bank of Sydney as a Credit Manager in 2005 before assuming her current role in December 2016.
Diana brings with her more than 20 years’ experience in retail and commercial lending, and holds a Bachelor of Economics and a CPA designation.
Geoff Wenborn
Chief Operating Officer
Geoff is the Chief Operating Officer (COO) and responsible for all technology and operations at Bank of Sydney.
Geoff is a seasoned digital innovation and technology leader with extensive experience across multiple industries including Retail, Banking and Finance, Health, Oil and Gas and Utilities. His significant previous roles include: C-level executive technology roles with Westpac, NAB and MLC, CIO with Move Bank, Chief Digital and Technology Officer with People’s Choice Credit Union, CIO with Origin Energy, vendor and consulting roles with SAP and Oracle, and a C-level executive advisor role with Salesforce.
Geoff has had founder, director and advisor responsibilities in multiple IT start-ups and FinTechs. He has also participated on various IT industry and Not for Profit advisory boards including the Starlight Children’s Foundation. Geoff holds a Master of Business Administration from RMIT University and a Bachelor of Science from Monash University.
Geoff is the Chief Operating Officer (COO) and responsible for all technology and operations at Bank of Sydney.
Geoff is a seasoned digital innovation and technology leader with extensive experience across multiple industries including Retail, Banking and Finance, Health, Oil and Gas and Utilities. His significant previous roles include: C-level executive technology roles with Westpac, NAB and MLC, CIO with Move Bank, Chief Digital and Technology Officer with People’s Choice Credit Union, CIO with Origin Energy, vendor and consulting roles with SAP and Oracle, and a C-level executive advisor role with Salesforce.
Geoff has had founder, director and advisor responsibilities in multiple IT start-ups and FinTechs. He has also participated on various IT industry and Not for Profit advisory boards including the Starlight Children’s Foundation. Geoff holds a Master of Business Administration from RMIT University and a Bachelor of Science from Monash University.
Andrew Mayoh
Acting Chief Risk Officer
Andrew is the Acting Chief Risk Officer (CRO) of Bank of Sydney, joining in June 2026.
A financial services executive with more than 30 years’ experience, Andrew is accountable for ensuring the effective governance and management of risk across both financial and non-financial segments. Prior to joining Bank of Sydney, Andrew has held leadership roles across Institutional Banking, Corporate and Commercial Finance. His career includes risk leadership roles at the Commonwealth Bank, National Australia Bank and Cuscal.
He holds a Master of Business Administration from the University of Newcastle.
Andrew is the Acting Chief Risk Officer (CRO) of Bank of Sydney, joining in June 2026.
A financial services executive with more than 30 years’ experience, Andrew is accountable for ensuring the effective governance and management of risk across both financial and non-financial segments. Prior to joining Bank of Sydney, Andrew has held leadership roles across Institutional Banking, Corporate and Commercial Finance. His career includes risk leadership roles at the Commonwealth Bank, National Australia Bank and Cuscal.
He holds a Master of Business Administration from the University of Newcastle.
Sam Tomaras
Chief Retail Banking Officer
Sam is the Chief Retail Banking Officer (CRBO) and is responsible for Retail Banking, Premium Banking, Lending, Deposits, Customer Service Centre, and Third-Party Distribution (Commercial and Residential Lending), while also supporting the Bank’s Community and Partnerships initiatives.
Sam joined Bank of Sydney in 2024 and has held leadership roles across Lending, Broker Distribution and Business Banking. He brings more than 20 years’ experience in banking and financial services, with expertise spanning retail banking, business banking, home lending, premium banking and distribution. Prior to joining Bank of Sydney, Sam held senior leadership positions with St. George Bank, Westpac, GE Capital and HSBC.
Sam is the Chief Retail Banking Officer (CRBO) and is responsible for Retail Banking, Premium Banking, Lending, Deposits, Customer Service Centre, and Third-Party Distribution (Commercial and Residential Lending), while also supporting the Bank’s Community and Partnerships initiatives.
Sam joined Bank of Sydney in 2024 and has held leadership roles across Lending, Broker Distribution and Business Banking. He brings more than 20 years’ experience in banking and financial services, with expertise spanning retail banking, business banking, home lending, premium banking and distribution. Prior to joining Bank of Sydney, Sam held senior leadership positions with St. George Bank, Westpac, GE Capital and HSBC.
Hisham Nakkash
Chief Business Banking Officer
Hisham is the Chief Business Banking Officer (CBBO), responsible for Business Banking, including SME and Commercial Banking, Business Relationship Management, Business Development and Trade Finance.
Hisham brings almost 20 years of banking experience across Commercial Banking, Corporate and Institutional Banking, Trade Finance and relationship management. He joined Bank of Sydney in 2026, having previously spent nine years with the Bank in senior business banking roles. Prior to rejoining Bank of Sydney, Hisham worked in Commercial Banking at Westpac, supporting mid-market businesses. Earlier in his career, he held corporate banking and relationship management roles with Bank of Beirut.
He holds a Master of Business Administration and a Bachelor of Financial Economics.
Hisham is the Chief Business Banking Officer (CBBO), responsible for Business Banking, including SME and Commercial Banking, Business Relationship Management, Business Development and Trade Finance.
Hisham brings almost 20 years of banking experience across Commercial Banking, Corporate and Institutional Banking, Trade Finance and relationship management. He joined Bank of Sydney in 2026, having previously spent nine years with the Bank in senior business banking roles. Prior to rejoining Bank of Sydney, Hisham worked in Commercial Banking at Westpac, supporting mid-market businesses. Earlier in his career, he held corporate banking and relationship management roles with Bank of Beirut.
He holds a Master of Business Administration and a Bachelor of Financial Economics.