** Apogee Therapeutics APGE.O shares down 1.2% in extended trading to $78.281 as it seeks equity raise
** Waltham, Massachusetts-based APGE commences $300 mln stock offering
** Plans to use net offering proceeds to fund preclinical studies, clinical trials, manufacturing, and commercial readiness activities in support of its antibody programs, among other purposes
** APGE shares finished up 20% at $79.24 after co's eczema drug, zumilokibart, showed in mid-stage trial lasting benefit in people with moderate-to-severe atopic dermatitis, a chronic skin condition causing an itchy rash
** Jefferies, TD Cowen, Stifel and Guggenheim Secs joint bookrunners for planned offering
** At Mon close, shares up 5% YTD and have doubled over the past 12 months
** Co has ~69.5 mln shares outstanding for $5.5 bln market cap
** Avg rating among 17 analysts is "buy"; median PT of $114 up from $97.50 a month ago, per LSEG
(Lance Tupper is a Reuters market analyst. The views expressed are his own)
((lance.tupper@tr.com 1-646-279-6380))