UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 13F Form 13F COVER PAGE Report for the Calendar Year or Quarter Ended: March 31, 2013 Check here if Amendment [ ]; Amendment Number: This Amendment (Check only one.): [ ] is a restatement. [ ] adds new holdings entries. Institutional Investment Manager Filing this Report: Name: Income Research & Management Address: 100 Federal Street 30th Floor Boston, MA 02110 13F File Number: 028-10329 The institutional investment manager filing this report and the person by whom it is signed hereby represent that the person signing the report is authorized to submit it, that all information contained herein is true, correct and complete, and that it is understood that all required items, statements, schedules, lists, and tables, are considered integral parts of this form. Person Signing this Report on Behalf of Reporting Manager: Name: Richard Kizik Title: CCO Phone: (617) 330-9333 Signature, Place, and Date of Signing: /s/ Richard Kizik Boston, MA May 13, 2013 Report Type (Check only one.): [ X] 13F HOLDINGS REPORT. [ ] 13F NOTICE. [ ] 13F COMBINATION REPORT. FORM 13F SUMMARY PAGE Report Summary: Number of Other Included Managers: 0 Form 13F Information Table Entry Total: 31 Form 13F Information Table Value Total: $604,897 (thousands) List of Other Included Managers: Provide a numbered list of the name(s) and Form 13F file number(s) of all institutional managers with respect to which this report is filed, other than the manager filing this report. NONE FORM 13F INFORMATION TABLE VALUE SHARES/ SH/ PUT/ INVSTMT OTHER VOTING AUTHORITY NAME OF ISSUER TITLE OF CLASS CUSIP (x$1000) PRN AMT PRN CALL DSCRETN MANAGERS SOLE SHARED NONE ------------------------------ ---------------- --------- -------- -------- --- ---- ------- ------------ -------- -------- -------- ALLEGHENY TECHNOLOGIES INC NOTE 4.250% 6/0 01741RAD4 8853 8250000 PRN SOLE 0 0 8250000 ALZA CORP SDCV 7/2 02261WAB5 8151 7310000 PRN SOLE 0 0 7310000 ARCHER DANIELS MIDLAND CO NOTE 0.875% 2/1 039483AW2 106396105343000 PRN SOLE 22214000 0 83129000 ARES CAP CORP NOTE 5.125% 6/0 04010LAD5 18000 16872000 PRN SOLE 0 0 16872000 BANK OF AMERICA CORPORATION 7.25%CNV PFD L 060505682 8999 7365 SH SOLE 0 0 7365 CSX CORP DBCV 10/3 126408GA5 5481 2090000 PRN SOLE 0 0 2090000 DANAHER CORP DEL NOTE 1/2 235851AF9 16027 8870000 PRN SOLE 0 0 8870000 DOMINION RES INC VA NEW NOTE 2.125%12/1 25746UAT6 21491 12568000 PRN SOLE 0 0 12568000 E M C CORP MASS NOTE 1.750%12/0 268648AM4 28693 19225000 PRN SOLE 0 0 19225000 FIDELITY NATIONAL FINANCIAL NOTE 4.250% 8/1 31620RAE5 8683 6438000 PRN SOLE 0 0 6438000 FORD MTR CO DEL NOTE 4.250%11/1 345370CN8 9394 5862000 PRN SOLE 0 0 5862000 GILEAD SCIENCES INC NOTE 1.000% 5/0 375558AN3 21121 9736000 PRN SOLE 0 0 9736000 GILEAD SCIENCES INC NOTE 1.625% 5/0 375558AP8 34821 16042000 PRN SOLE 0 0 16042000 GOLDCORP INC NEW NOTE 2.000% 8/0 380956AB8 11195 10732000 PRN SOLE 0 0 10732000 HEALTH CARE REIT INC NOTE 3.000%12/0 42217KAR7 9165 6996000 PRN SOLE 0 0 6996000 INTEL CORP SDCV 2.950%12/1 458140AD2 40078 37765000 PRN SOLE 0 0 37765000 JEFFERIES GROUP INC NEW DBCV 3.875%11/0 472319AG7 19106 18583000 PRN SOLE 1025000 0 17558000 L-3 COMMUNICATIONS CORP DEBT 3.000% 8/0 502413AW7 4850 4796000 PRN SOLE 0 0 4796000 LAM RESEARCH CORP NOTE 0.500% 5/1 512807AJ7 12334 12137000 PRN SOLE 0 0 12137000 MEDTRONIC INC NOTE 1.625% 4/1 585055AM8 70557 70557000 PRN SOLE 15876000 0 54681000 MOLSON COORS BREWING CO NOTE 2.500% 7/3 60871RAA8 10184 9869000 PRN SOLE 0 0 9869000 NEWMONT MINING CORP NOTE 1.625% 7/1 651639AJ5 22205 18099000 PRN SOLE 0 0 18099000 NOVELLUS SYS INC NOTE 2.625% 5/1 670008AD3 6803 5000000 PRN SOLE 0 0 5000000 OLD REP INTL CORP NOTE 3.750% 3/1 680223AH7 11934 10697000 PRN SOLE 0 0 10697000 PRICELINE COM INC DEBT 1.000% 3/1 741503AQ9 14604 13254000 PRN SOLE 0 0 13254000 PROLOGIS NOTE 2.625% 5/1 74340XAS0 14467 14467000 PRN SOLE 3963000 0 10504000 PROLOGIS NOTE 3.250% 3/1 74340XAT8 11093 9630000 PRN SOLE 0 0 9630000 SYMANTEC CORP NOTE 1.000% 6/1 871503AF5 9543 7398000 PRN SOLE 0 0 7398000 TEVA PHARMACEUTICAL FIN LLC DBCV 0.250% 2/0 88163VAE9 13457 12947000 PRN SOLE 0 0 12947000 WELLS FARGO & CO NEW PERP PFD CNV A 949746804 14015 10875 SH SOLE 0 0 10875 XILINX INC NOTE 2.625% 6/1 983919AF8 13197 9306000 PRN SOLE 0 0 9306000