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William Kontaxis

BBus, JD, MTax

Senior Associate - Sydney

Areas of Expertise

Corporate & Commercial Law, Mergers and Acquisitions, Finance


William is a corporate lawyer with extensive experience representing both private and public sector clients operating across a wide mix of industries – information technology, banking and finance, private lending, rideshare, not-for-profit, aged care, manufacturing, retail, education and early-learning sectors to name a few. 

William’s clients range from start-ups and owner-managed SMEs through to ASX listed companies, financial institutions and government, and he has considerable experience with cross-border transactions acting for both listed and unlisted foreign companies on their Australian transactions.

William acts in all aspects of corporate transactions, including:

  • mergers and acquisitions
  • corporate structuring
  • capital reductions and share buy-backs
  • private capital raisings
  • private lending and security arrangements 
  • shareholder and joint venture agreements
  • shareholder disputes
  • commercial agreements.


William’s experience includes:

Mergers & Acquisitions

  • advised on the sale of a leading national child care services chain to a private equity group
  • advised on the sale of a leading IT services provider to a Big 4 accounting firm
  • advised on the sale of a clinical research organisation to a large Netherlands-based trade buyer
  • advised on the asset sale of a technology start-up in administration.


  • advised the Australian subsidiary of a NY listed, global technology services company on its acquisition of a leading Australian IT services company in the Oracle space
  • advised a UK listed content publisher and retailer on the sale of its Australian operations
  • advised an international ride-share service operator on the establishment and launch of its Australian business
  • advised a US parent company selling its Australian and New Zealand retail distribution businesses
  • advised an Australian agriculture business on its China distribution arrangements.

Banking & Finance

  • advised a banking institution on the introduction of an innovative social impact banking product and associated technology system
  • advised a banking institution on the development of a ‘shared equity’ affordable housing product
  • advised a private lender on its construction loan and security arrangements with borrowers in the property development space
  • developed and implemented a new suite of loan and security documents for a leading financier of social enterprises.


  • advised a prominent Australian fashion manufacturer / retailer on a refinance under a convertible loan note
  • advised an established wealth management business on a financial assistance whitewash
  • advised a global hospitality group on its proposed joint-venture agreement with an Australian hotels operator
  • advised an education services provider on proposed shareholder loans.

Charities & Not-for-Profits

  • advised a client during the RFP phase of a significant social infrastructure project/ public-private partnership with the NSW Government
  • managed a national privacy law project for a major charitable institution
  • advised on fundraising and sponsorship agreements and general commercial transactions.


Law Society of New South Wales


25 March 2020 - Knowledge

ASIC refocuses priorities to face COVID-19 challenges

#Corporate & Commercial Law, #COVID-19

ASIC has moved quickly to refocus its priorities for the coming months as COVID-19 impacts Australian companies.

30 September 2019 - Knowledge

How to sell your business without losing business: Signing is just the beginning (Part 4)

#Corporate & Commercial Law

In the last of our four-part series on selling your business without losing business, we provide some useful tips for navigating the post-signing or pre-completion phase as smoothly and pain-free as possible.

23 September 2019 - Knowledge

How to sell your business without losing business: The pre-sale restructure (Part 3)

#Corporate & Commercial Law

As a business grows, it is not uncommon for new companies to be added to the ‘group’ in a piecemeal fashion. This can lead to a needlessly complex corporate structure without proper regard for the long-term goals of the group or its majority owners.

16 September 2019 - Knowledge

How to sell your business without losing business: Assembling your A-team (Part 2)

#Corporate & Commercial Law

This second of our four-part series on selling a business without losing business looks at who owners should recruit to their crack commando unit, and when to pull them in to facilitate a smooth and successful sale.

09 September 2019 - Knowledge

How to sell your business without losing business: Regular housekeeping (Part 1)

#Corporate & Commercial Law

Selling a business can be a full-time job. We share the steps owners can take at different stages in the business sale cycle to prepare and seal the deal – without losing business in a four-part series, starting with five tips that will make a business 'sale ready'.

27 November 2018 - Knowledge

Loan ranger: Five tips for private lending in Australia

#Corporate & Commercial Law

The private lending space in Australia is booming. Borrowers seeking short to medium term finance are finding it increasingly difficult to secure funding from traditional channels. Here are five practical tips for lenders targeting opportunities in this space.