UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES AND EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2019 Commission File Number: 001-36771 Delaware 51-0605731 (State or other jurisdiction of incorporation or organization) (I.R.S. Employer Identification No.) 595 Market Street, Suite 200, San Francisco, CA ...