[1] Representing the Valencian Nationalist Bloc (BNV) within the Coalició Compromís, Sebastià was elected to the town hall of his hometown of Burjassot near Valencia in 1999.
[2] Sebastià was indicted in court for a December 2012 incident in which he ordered the dismantling of a stall that the far-right party España 2000 had erected without municipal permission.
[4] In March 2014, Sebastià received 54% of the votes to lead Compromís in the 2014 European Parliament election in Spain, in which they would be aligned with parties including Greens Equo and Chunta Aragonesista.
[6] Per an agreement between the two parties, he ceded his seat to Equo's Florent Marcellesi in October 2016.
[7] In April 2019, Sebastià was chosen to lead the coalition for the 2019 European Parliament election in Spain, now named Commitment to Europe.