NEX Events:

For Events in 2018 and after, contact WilderHill New Energy Finance.

Historical: From 2010 to 2017, Index Event announcements were put forth by the New York Stock Exchange.

Also this link allows for researching past index events, only going from 2006-2010.

http://nexindex.com/eventsarchive.php.

This link is not used for posting any information past 2010.