Is Soul Eater Manga over?

The series finished on November 10, 2014. Five tankōbon volumes were released between September 22, 2011 and December 22, 2014. Soul Eater Not! has been licensed by Yen Press in North America.

Does Soul Eater continue in the manga?

While this isn't odd for the world of manga and anime, Soul Eater has multiple character arc and plot changes across the entire series. This ultimately leads to the anime diverging from the manga but still keeping with original overall plot.

Is Soul Eater NOT Manga finished?

The Soul Eater Wiki says in its (brief) page for ep. 12 that it was the final episode of the anime, yet states that the Manga is still ongoing.