The Doctoral Program in Economics Faculty of Economics and Business Universitas Diponegoro on February 1, 2024 at 13.30 held a doctoral promotion (VIVA exam) Ika Iryanti to defend his dissertation entitled “Building marketing performance with quality referral marketing communications on social Commerce”.

Research the purpose of Ika Iryanti analyzes the relationship between good corporate governance mechanisms and company value through an environmentally committed debt policy, a mediating variable. Environmentally Committed Debt Policy is a novelty from synthesizing agency and resource dependency theories to resolve the research gap of good corporate governance mechanisms on company value.

The dissertation uses panel data on non-financial companies for the 20102022 period on the Indonesia Stock Exchange as a sample, and these companies take part in the proper program held by the Ministry of the Environment. Panel data was obtained from 19 companies, resulting in 247 observations. The dissertation was processed using the Warp PLS 7.0 program.

The research conclusions are as follows: First, the frequency of Board of Commissioners meetings does not affects company value. Second, independent commissioners have a positive effect on company value. Third, ownership concentration has a positive effect on company value. Fourth, the frequency of Board of Commissioners meetings positively affects environmentally committed debt policy. Fifth, independent commissioners have a positive influence on environmentally committed debt policies. Sixth, ownership concentration does not affect environmentally committed debt policies. Seventh, environmentally committed debt policies fully mediate the influence of the frequency of board of commissioners meetings on company value. Eighth, environmentally committed debt policies partially mediate the influence of independent commissioners on company value. Ninth, environmentally committed debt policies do not mediate the effect of ownership concentration on company value. Tenth, environmentally committed debt policies have a positive effect on company value.

The Examination Committee consists of Prof. Faisal, SE., M.Si., Ph.D (Chief Examiner, Main Supervisor), Prof. Dr. Sugeng Wahyudi, M.M (Secretary Examiner, Supervisor), Dr. Maria Rio Rita, S.E., M.Si (External Examiner), Dr. Dra. Irene Rini Demi Pangestuti, M.E (Examiner), Prof. Dr. Harjum Muharam, S.E., M.E  (Examiner ) and Dr. Wisnu Mawardi, S.E., M.M (Examiner, co-Supervisor ). The Viva exam run two hours and after assessing the dissertation, the Committee decided to award the candidate with PhD title. Congratulation and wish you success in the future career