13F-HR 1 a13f-hr.txt UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 13F FORM 13F COVER PAGE Report for the Calendar Year or Quarter Ended: December 31, 2010 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: Mesirow Advanced Strategies, Inc. Address: 353 North Clark Street Chicago, IL 60654 13 File Number: 28-13836 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: Gregory J. Robbins Title: Senior Managing Director, General Counsel Phone: (312) 595-7955 Signature, Place and Date of Signing /s/ Gregory J. Robbins Chicago, Illinois February 11, 2010 ------------------------- -------------------- --------------------- [Signature] [City, State] [Date]

Report Type (Check only one.): [X] 13F HOLDINGS REPORT. (Check here if all holding of this reporting manager are reported in this report.) [ ] 13F NOTICE. (Check here if no holdings reported are in this report, and all holdings are reported by other reporting manager(s).) [ ] 13F COMBINATION REPORT. (Check here if a portion of the holdings for this reporting manager are reported in this report and a portion are reported by other reporting manager(s).) FORM 13F SUMMARY PAGE Report Summary: Number of Other Included Managers: 4 Form 13F Information Table Entry Total: 353 Data Records Form 13F Information Table Value Total: $194,756 (thousands) List of Other Included Managers: Provide a numbered list of the name(s) and Form 13F file number(s) of all institutional investment managers with respect to which this report is filed, other than the manager filing this report. No. Form 13F File Number Name 1 28-11218 Ascend Capital Limited Partnership 2 28-05388 Bryn Mawr Capital Management, Inc. 3 28-6046 Standard Pacific Capital LLC 4 Theorema Advisors Ltd.

Mesirow Advanced Strategies, Inc. 13F-HR