Gilbert Winn, son of Arthur Winn, the founder of WinnCompanies of Boston, has been named managing principal of the real estate firm, assuming decision-making authority over the company’s holdings and operations.

Lawrence Curtis, a partner of Arthur Winn for 22 years, has assumed the duties of president of WinnDevelopment. Curtis has spearheaded the company’s development endeavors over the past two decades, the company said in a statement. He has led the acquisition and development efforts for WinnCompanies, whose real estate holdings have grown to more than $1.5 billion.

In addition to the elevation of Gilbert Winn and Lawrence Curtis, the management team includes Chief Executive Officer Sam Ross; William Wollinger, president and chief operating officer of WinnResidential; and Chief Counsel Michael Putziger.

Arthur Winn, who turns 70 this year, founded WinnCompanies in 1971.

"After 38 years on the front lines, I’d like to take a step back and play more of an advisory and cheerleader’s role," said Arthur Winn. "Gilbert has the talent, leadership qualities and drive to assume control of our company. With the support of WinnCompanies’ long-standing executive team, I feel very confident in his ability to take over my role with the company. The WinnCompanies couldn’t be in better hands as we shift the enterprise to the next generation."