ComSyn started as discussion group about Comparative Syntax at Leiden University Center for Linguistics (LUCL). Now, it is primarily a series of lectures about (comparative) syntax. Speakers from all over the world are very welcome to present their work in an informal setting. ComSyn is the perfect place to present work in progress, do a mock defense, do dry runs for a conference or simply present a syntactic problem one would like to share with other people. If you have any suggestions, please contact one of the organisers, Martin Kroon, Hang Cheng, Elisabeth Kerr, and Astrid van Alem.