Bike was in covered basement patio area along with my kids' bikes. That area is secured by a coded gate protecting rear parking and rear unit entrances. Thief either hopped gate and opened from inside or had knowledge of gate code. Neighbor caught likely thief on camera around 9:30 PM. They had ridden up on a Next brand bike and were peeking into the back area. This Next bike was later seen leaning against the wall in alley but was gone by morning. My bike seems to be the only item taken from our building. It was also be far the most valuable item that was stored outside at any unit. Our neighbors' general consensus is this person had knowledge of this bike and its location. Likely related to some construction contractors that have been working at the neighboring unit over the last 12 weeks. Who knows, but it seems plausible.