** Shares of Armour Residential REIT ARR.N down 2.8% premarket to $16.33 after follow-on prices
** Vero Beach, Florida-based firm says sold 18.5 shares for total gross proceeds of about $302.5 mln
** Offering priced at $16.35, 2.7% discount to stock's last close
** It intends to use net proceeds to acquire additional mortgage-backed securities and other mortgage-related assets issued or guaranteed by U.S. Government-sponsored enterprises or guaranteed by the Government National Mortgage Association (Ginnie Mae)
** Goldman Sachs sole bookrunner for the offering
** ARR has ~91.59 mln shares outstanding for $1.5 bln market cap
** Through Tues, ARR shares down 11% YTD
** 1 of 6 analysts rates ARR "strong buy", 5 rate "hold" and median PT is $18, per LSEG data