UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 Form 10-Q T Quarterly report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the quarterly period ended March 31, 2019 OR ☐ Transition report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Commission File Number 001-36271 WATERSTONE FINANCIAL, INC. (Exact name of registrant as specified in its charter) (414) 761-1000 (Registrant's telephone number, including area code) Indicate by check ...