Don is a Partner in the Corporate Group of Simpson Grierson's Commercial Department, a group of specialist corporate and securities lawyers providing strategic advice on high-profile and complex transactions.

Don's work has a particular focus on mergers, takeovers and public offers of securities. He also has a strong interest in the information technology sector, and has advised on many major IT&T outsourcing projects.

Don has extensive experience in securities issuance, acting for a number of listed companies, major institutional investors and fund managers, including OceanaGold Corporation, GuocoLeisure Limited, Guinness Peat Group, JP Morgan and AMP.  He is experienced in drafting and analysing investment statements and prospectuses, and conducting associated due diligence exercises.

• OceanaGold Corporation - redomicile to Canada and C$90m (NZ$110m) securities offering - NZ legal aspects (2007)
• Toll Holdings A$6 billion spin-off of infrastructure assets into Asciano - NZ securities law exemptions (2007)
• Oceana Gold A$70m convertible notes - NZ legal aspects (2007)
• Guinness Peat Group's $350 million exchange offer and general offer of capital notes (2006)
• Oceana Gold's merger with Climax Mining - NZ securities law aspects (2006)
• Capital Properties' target company response to AMP Property Portfolio's $301 million full takeover offer (2005-2006)
• Capital Properties' proposed sale of management rights over its asset portfolio, including defence of complaints to the Takeovers Panel and NZX (2005)
• A$160 million IPO of Oceana Gold by GRD NL (2004)
• Gas Investments NZ's target company response to Royal Dutch/Shell's full takeover offer (2004)
• Westpac Banking Corporation's issue of A$600 million FIRsTS (fixed interest resettable trust securities) (2003)
• Capital Properties' $75 million rights issues (2002 and 2003)
• Tui AG's sale of Preussag Energie's New Zealand oil and gas (exploration and production) assets to OMV (2003)
• Guinness Peat Group's reverse takeover of Brunel (2002)
• Guinness Peat Group's $250 million capital notes issue (2001)
• IPO and trade sale (to US based Edison Mission Energy) of Contact Energy (1999)
• Establishment of Contact Energy (1995) and transfer of assets from ECNZ (1996)

• Wellington Regional Orchestra Foundation (Vector Wellington Orchestra) - Chairman
• FINSIA Task Force on Securities Law, Stock Exchange and Market Regulation in New Zealand - Member 
• Listed Company Association - Executive Committee Member