Massachusetts brings enforcement actions against "Roaring Kitty's" employer. FINRA adopts amendments to filing requirements for quotations of non-exchange-listed securities. FINRA to review firms' use of social media channels to acquire customers. DTCC DLT initiative to shorten the settlement cycle moves forward. FINRA urges members to prepare for OTCBB cessation. SEC grants exemption to ETF from tender offer rules. Firm settles SEC charges for prioritizing "flippers" in municipal offerings. Broker-Dealer settles FINRA charges for failing to repair rejected OATS submissions.