Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2019 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission file number 1-15319 DIVERSIFIED HEALTHCARE TRUST (Exact Name of Registrant as Specified in Its Charter) Maryland 04-3445278 (State of Organization) (IRS Employer Identification N ...

Table of Contents Title Of Each Class Trading Symbol(s) Name Of Each Exchange On Which Registered Common Shares of Beneficial Interest SNH The Nasdaq Stock Market LLC 5.625% Senior Notes due 2042 SNHNI The Nasdaq Stock Market LLC 6.25% Senior Notes due 2046 SNHNL The Nasdaq Stock Market LLC UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2019 ...

Senior Housing Properties Trust (SNH) Q3 2019 Earnings Conference Call November 7, 2019 10:00 AM ET Executives Michael Kodesch - Director, IR Jennifer Francis - President, COO Richard Siedel - CFO, Treasurer Analysts Michael Carroll - RBC Capital Markets Todd Stender - Wells Fargo Bryan Maher - B. Riley FBR Jonathan Hughes - Raymond James Operator Good morning, and welcome to the Senior Housing Properties Trust Third Quarter 2019 Financial Results Conference Call. [Operator Instructions] Please note, this e ...

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2019 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File Number 1-15319 SENIOR HOUSING PROPERTIES TRUST (Exact Name of Registrant as Specified in Its Charter) (State or Other Jurisdiction of Incorporation or Organization) (IRS ...

Senior Housing Properties Trust (SNH) Q2 2019 Results Conference Call August 8, 2019 10:00 AM ET Company Participants Michael Kodesch - Director of Investor Relations Jennifer Francis - President and Chief Operating Officer Richard Siedel - Chief Financial Officer Conference Call Participants Todd Stender - Wells Fargo Securities Bryan Maher - B. Riley FBR Drew Babin - Robert W. Baird Operator Good morning, and welcome to the Senior Housing Properties Trust Second Quarter 2019 Financial Results Conference C ...

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q ☒ 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 1-15319 SENIOR HOUSING PROPERTIES TRUST (Exact Name of Registrant as Specified in Its Charter) (State or Other Jurisdiction of Incorporation or Organization) (IR ...

Senior Housing Properties Trust (SNH) Q1 2019 Earnings Conference Call May 9, 2019 10:00 AM ET Company Participants Jennifer Francis - President & COO Richard Siedel - CFO & Treasurer Conference Call Participants Alexander Kubicek - Robert W. Baird & Co. Bryan Maher - B. Riley FBR, Inc. Michael Carroll - RBC Capital Markets Todd Stender - Wells Fargo Securities Vikram Malhotra - Morgan Stanley Operator Good morning, and welcome to the Senior Housing Properties Trust First Quarter 2019 Financial Results Conf ...

Senior Housing Properties Trust (SNH) Restructuring of Business Arrangements with Five Star Senior Living Conference Call April 2, 2019 10:00 AM ET Company Participants Brad Shepherd - Senior Director of Investor Relations Jennifer Francis - President and Chief Operating Officer Rick Siedel - Chief Financial Officer and Treasurer Conference Call Participants Drew Babbin - Baird Michael Carroll - RBC Capital Markets Tayo Okusanya - Jefferies Vikram Malhotra - Morgan Stanley Matt Boone - B. Riley FBR Operator ...

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-K x ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2018 or ¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission file number 1-15319 SENIOR HOUSING PROPERTIES TRUST (Exact Name of Registrant as Specified in Its Charter) Maryland 04-3445278 (State of Organization) (IRS Employer Identificatio ...

Senior Housing Properties Trust (SNH) Q4 2018 Earnings Conference Call March 1, 2019 10:00 AM ET Company Participants Brad Shepherd - Senior Director of Investor Relations Jennifer Francis - President and Chief Operating Officer Rick Siedel - Chief Financial Officer and Treasurer Conference Call Participants Tayo Okusanya - Jefferies Drew Babin - Baird Bryan Maher - B. Riley FBR Michael Carroll - RBC Capital Markets Todd Stender - Wells Fargo Vikram Malhotra - Morgan Stanley Operator Good morning, and welco ...