UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2020 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission file number: 001-37813 SYROS PHARMACEUTICALS, INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 45-3772460 (State or Other Jurisdiction of Incorporation or Organi ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2020 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission file number: 001-37813 SYROS PHARMACEUTICALS, INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 45-3772460 (State or Other Jurisdiction of Incorporation or Organ ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K (Mark One) ☑ 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 For the transition period from to Commission file number 001-37813 SYROS PHARMACEUTICALS, INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 45-3772460 (State or other jurisdic ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2019 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission file number: 001-37813 SYROS PHARMACEUTICALS, INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 45-3772460 (State or Other Jurisdiction of Incorporation or Organization) Washington, DC 205 ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-Q (Mark One) ☒ 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: 001-37813 SYROS PHARMACEUTICALS, INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 45-3772460 (State or Other Jurisdiction of Incorporation or Organi ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-Q SYROS PHARMACEUTICALS, INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 45-3772460 (State or Other Jurisdiction of Incorporation or Organization) 620 Memorial Drive, Suite 300 Cambridge, Massachusetts 02139 (Address of Principal Executive Offices) (Zip Code) (I.R.S. Employer Identification No.) (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarter ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K (Mark One) ☑ 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 For the transition period from to Commission file number 001-37813 SYROS PHARMACEUTICALS, INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 45-3772460 (State or other jurisdic ...