Gasant practised in law firms in Cape Town and Johannesburg before being appointed Chief Legal Advisor at South Africa Airways in 1995. In this capacity, Gasant served as a member of the airline's Executive Committee, Aviation Safety Review Board and Transformation Committee. During 1997, Gasant joined Hofmeyr (now Cliffe Dekker Hofmeyr) as a Director. From September 2008 he held the position of Joint Managing Partner, Cape Town until his appointment as Cape Managing Partner in 2011.

• Advised numerous companies, in both private and public sectors, on corporate governance matters including advising in relation to directors' duties, performing compliance checks with reference to their MOI's, shareholders' agreements and other arrangements, the Companies Act/Regulations and King Report, and follow-up work to update or redraft constitutional documents and shareholder agreements and other arrangements, preparation of board charters, and advice in relation to the establishment, role and functions, and terms of reference of board sub-committees (social and ethics committee, remuneration committee, risk management committee and audit committee, etcetera). Gasant has done numerous presentations and workshops for clients on corporate governance and related matters.    
• Advised numerous companies, in both private and public sectors, on anti-bribery and corruption (ABAC) matters including performing ABAC due diligence and compliance checks, and furnishing advice in relation to ABAC policies, procedures and due diligence questionnaires. Gasant has done numerous presentations and workshops for clients on ABAC and related matters.  
• Acted for Old Mutual in relation to the acquisition of Grand Central Airport, Midrand. The work entailed extensive due diligence on the target entity/group, negotiation and drafting of the transaction documents, advice on regulatory matters, and implementation of the transaction.
• Acted for Old Mutual in relation to the acquisition of a life insurer in Kenya, which has operations in Kenya, Uganda, Tanzania, DRC, Rwanda and Mauritius. The work entailed extensive due diligence on the target entity/group (including co-ordination of the due diligence activities of in-country/local counsel), negotiation and drafting of the transaction documents, advice on regulatory matters, and implementation of the transaction.
• Acted for the owners/management of Protea Hotels in relation to the disposal of the hotel business to Marriott Inc. The transaction involved several other African jurisdictions including Nigeria, Uganda, Tanzania and Mauritius. The work entailed co-ordination of the due diligence investigation undertaken by the buyer on the target entity/group, negotiation and drafting of the transaction documents, advice on regulatory matters, and implementation of the transaction.
• Acted for the owners/management of Protea Hotels in relation to the disposal of their interests in the company to an Australian investor and the subsequent repurchase thereof. The work entailed co-ordination of the due diligence investigation undertaken by the buyer on the target entity/group, negotiation and drafting of the transaction documents, advice on regulatory matters, and implementation of the transaction.
• Acted for Istithmar PJSC, Leisurecorp LLC and Dubai World Group in relation to the acquisition and subsequent disposal of several of their investments in South Africa and elsewhere in Africa including Pearl Valley Golf Estates and several private game reserves in South Africa (Shamwari, Jock of the Bushveld, Sanbona and Nkomazi Wilderness), and various projects in Comores, Rwanda, Mozambique, Zanzibar and Djibouti.
• Acted for Public Investment Corporation in relation to the acquisition of the V&A Waterfront, Cape Town.
• Acted as South African legal counsel to South African Airways in respect of its bid for a strategic equity stake in Kenya Airways and Ugandan Airlines.
• Acted for Transnet in relation to the restructuring, corporatisation and partial privatisation of South African Airways.
• Extensively involved in due diligence work as either team leader or team member of the legal workstream on several major M&A transactions including the FirstRand/Rand Merchant Bank merger, Gensec/Sanlam Asset Management merger and the South African Airways/Swissair transaction.
• Acted for the South African Government and Transnet in relation to the disposal of Transnet's interest in Mobile Telephone Network (MTN), a mobile telephony company listed on the Johannesburg Stock Exchange.
• Acted for the South African Government and Transnet in relation to the disposal of the Victoria & Alfred Waterfront development in Cape Town.
• Acted for the V&A Waterfront company in relation to several hotel development and building projects including the BP Head Office Building and Kerzner One&Only Hotel including drafting and negotiating various transaction agreements such as commercial leases and development agreements.
• Acted for Protea Hotels in relation to several hotel projects, which included drafting and negotiating various transaction agreements such as shareholders' agreements, commercial leases and development agreements.

• Best Lawyers International 2010–2019 listed Gasant for Corporate Law and Mergers & Acquisitions Law.
• Legal 500 EMEA 2018 recommended Gasant in Commercial, Corporate/M&A.

Education

• BA LLB, University of Cape Town
• Year of admission as an attorney: 1991
• Enrolled with the Legal Practice Council