Bandier joined the company in 2007 and has 're-energised' and grown the company by signing emerging singer-songwriter artists and songwriter-producers for the company, which boasts big names on its roster such as: Lady Gaga, Enrique Iglesias, Shakira, Jeff Bhasker, JR Rotem and RedOne.
In addition Bandier has steered the organisation to multiple ASCAP and BMI award-winning status.
Bandier said of the contract extension: "Working at Sony/ATV Music Publishing, especially with its talented artists, songwriters and staff, has been one of the best highlights of my career."
Sony/ATV Music Publishing is a joint venture between Sony Corporation and the Estate of Michael Jackson.
In November 2011, an investor group that includes Sony Corporation of America in conjunction with the Estate of Michael Jackson, signed an agreement to acquire EMI Music Publishing. Subject to approval, Sony/ATV Music Publishing will help oversee EMI Music Publishing - the company at which Bandier was previously CEO for 17 years, joining in 1989.
"Over the past five years, we have shared some incredible moments and I am humbled by the confidence and support that Sony and the Estate of Michael Jackson continue to place in me for the development and growth of their joint venture," Bandier said.
He added: "With the addition of EMI Music Publishing, a company I spent over 17 years building, the future looks very promising for many more shared successes."
Sir Howard Stringer, Chairman, CEO & President, Sony Corporation commented: "At a vital time for Sony/ATV, I am delighted that Marty has agreed to continue his expert leadership of this important company.
"Music publishing is an incredibly successful part of our business and with Marty staying on at the helm, Sony/ATV is well positioned for the years ahead."
John Branca and John McClain, co-executors of the Estate of Michael Jackson said: "Marty Bandier is, and for years has been, the leading publisher in the world.
"We are thrilled he will be at Sony/ATV for years to come. Marty's experience, wealth of knowledge and creativity set the standard by which others are measured."