“…Miscellaneous effects come from the release of information about voluntary environmental certifications (e.g., Bouslah et al, 2010;Jacobs et al, 2010), the announcement of new green products or investments (e.g., Ba et al, 2013;Bose & Pal, 2012;Halme & Niskanen, 2001;Mathur & Mathur, 2000), and the establishment of new environmental regulations (e.g., Blacconiere & Northcut, 1997;Jiang & Luo, 2018;Pham et al, 2019;Ramiah et al, 2013Ramiah et al, , 2015 (Heflin & Wallace, 2017;Patten & Nance, 1998) and, more in general, when eco-harmful events are announced (Flammer, 2013). Therefore, environmental commitment "may act as 'insurance', reducing negative reactions by shareholders to the announcement of eco-harmful events" (Flammer, 2013, p. 759).…”