There were 2 subsequent collections to complete the Grant Morrison Animal Man run.
The second collection is Animal Man: Origin of the Species (DC, 2002 series) which collects Animal Man #10-17 and Secret Origins (DC, 1986 series) #39. https://www.comics.org/issue/355634/
The third collection is Animal Man: Deus Ex Machina (DC, 2003 series) which collects Animal Man #18-26. https://www.comics.org/issue/355633/
On-sale date listed is solicited release date.
Seventh printing available November 27, 2013 (per comiclist.com).