MicroStrategy Inc (NASDAQ:MSTR) shares are trading lower Monday. The company recently announced the pricing of its convertible senior notes offering. The stock may also be down amid pre-planned sales by MicroStrategy co-founder and executive chairman Michael Saylor. What To Know: MicroStrategy shares are pulling back Monday after rallying more than 120% over the last month on the back of rising Bitcoin prices. Last week, MicroStrategy announced the pricing of its offering of $525 million worth of 0.875% convertible senior notes due 2031. The company also said it planned to grant the initial pu…