Royal Dutch Shell plc on Feb. 15 completed its deal to acquire BG Group PLC for a transaction value of £54.52 billion.

The company offered £10.63 per share for the stake.

In addition to general closing conditions, the deal required additional review for antitrust concerns.

Lazard & Co. Ltd. and Merrill Lynch International were the financial advisers for Royal Dutch Shell, and Allens, Cravath Swaine & Moore LLP, De Brauw Blackstone Westbroek NV, Dentons Europe CS LLP, Pinheiro Neto Advogados, Slaughter and May and Souza Cescon Barrieu & Flesch Advogados were the legal advisers.

Goldman Sachs International, J.P. Morgan Cazenove Ltd., Morgan Stanley & Co. International PLC, N M Rothschild & Sons Ltd. and Robey Warshaw LLP were the financial advisers for BG Group , while Freshfields Bruckhaus Deringer LLP, King & Wood Mallesons LLP, Lee & Ko and Mattos Filho Veiga Filho Marrey Jr. e Quiroga Advogados were the legal advisers.