Looks to me (not surprisingly) that it has been turned into a paid promo. I don't see Suresh willing to pay whatever it might cost. (Maybe one of the Funds wanting to take a position in POET could foot the bill?)

https://www.nasdaq.com/marketsite/bell-ringing-ceremony

The iconic bell ringing ceremony at Nasdaq MarketSite represents an enormous opportunity to showcase your company and celebrate its achievements and milestones before a global audience. Hosted by a Nasdaq senior executive, our opening and closing bell ceremonies provide a platform for companies to generate meaningful brand exposure.