I never like any kind of insider selling, but let’s get real: the 10b5-1 sales by MNTA’s executive officers are minuscule relative to their overall shareholdings and options (see table in #msg-76922328).
On a related matter, Rick Shea may have modified his 10b5-1 plan to allow for the large exercise of options on 6/15/12 without a follow-up sale (#msg-76774166).