Sydney-listed betting and gaming operator Tabcorp Holdings has appointed a new executive leadership team to take charge of the enlarged company following its combination with Tatts Group.

Effective from tomorrow, the executive team will be heavily dominated by senior executives from Tabcorp’s side of the business, led by managing director and chief executive David Attenborough, who has been with the company since April 2010.

“Tabcorp’s new executive leadership team brings together executives from both Tabcorp and Tatts,” Attenborough said. “I am very pleased to have such a strong team in place from day one as we enter a new era for these two great companies.

“The combination has created a world-class, diversified gambling entertainment group. Our new executive leadership team, together with our more than 5,000 people, will work to deliver the material benefits the combination is expected to create for shareholders, the racing industry, business partners, customers and governments.”

Damien Johnston continues as chief financial officer, a role he has held since June 2011, while Sean Hughes has been named group general counsel, having joined Tabcorp in July of this year.

Adam Rytenskild remains as managing director of Wagering & Media, where he has been for the past year since moving from the Keno and Gaming division.

Sue van der Merwe has taken on the role of managing director of Lotteries & Keno. She was previously chief operating officer for lotteries at Tatts Group.

Another Tatts executive, Frank Makryllos, has been appointed managing director of Gaming Services, having been COO of gaming at Tatts since early 2013.

Tabcorp’s chief information officer (CIO) will be Mandy Ross, who has served in a similar role for Tatts since December 2014, while long-serving executive Merryl Dooley has been appointed chief people officer. Dooley has now been with Tabcorp in a variety of roles since October 1990.

Clinton Lollback continues as chief risk officer, a position he has held since January 2016, with Ben Simons taking on the chief strategy officer role and Fiona Mead appointed group company secretary.

“I’d like to take this opportunity to express our deep appreciation to the executives who are departing the organisation due to the combination becoming effective,” Attenborough added. “Each has contributed to the strength of Tabcorp and Tatts and has helped set us up with a great platform for growth.

“These executives will remain with us for a period of time into the New Year to support the initial phase of the integration program.”

Shares in Tabcorp Holdings Ltd (ASX:TAH) closed down 0.54 per cent at AUD$5.54 per share in Sydney Thursday, just off their 52-week high of $5.58 per share set a day earlier.