UNITED STATES SECURITIES
AND EXCHANGE COMMISSION
Washington, D.C.

FORM D

OMB APPROVAL
OMB Number: 3235-0076
Expires: June 30, 2012
Estimated Average burden hours per response: 4.0
Notice of Exempt Offering of Securities


1. Issuer's Identity
CIK (Filer ID Number) Previous Name(s)   x None Entity Type
0001456820
 
o Corporation
x Limited Partnership
o Limited Liability Company
o General Partnership
o Business Trust
o Other
Name of Issuer
  Mesirow Institutional Multi-Strategy Fund, L.P.
Jurisdiction of Incorporation/Organization
ILLINOIS
 
Year of Incorporation/Organization
  x Over Five Years Ago
  o Within Last Five Years (Specify Year)  
  o Yet to Be Formed  



2. Principal Place of Business and Contact Information
Name of Issuer  
  Mesirow Institutional Multi-Strategy Fund, L.P.  
Street Address 1 Street Address 2
  UBS Fund Services (Cayman) Limited   UBS House, 227 Elgin Avenue
City State/Province/Country ZIP/Postal Code Phone No. of Issuer
  Grand Cayman   CAYMAN ISLANDS   KY1-1103   345-914-1000  



3. Related Persons
Last Name First Name Middle Name
Mesirow Advanced Strategies, Inc. n/a
Street Address 1 Street Address 2
353 North Clark Street 16th Floor
City State/Province/Country ZIP/Postal Code
Chicago ILLINOIS 60654
Relationship: x Executive Officer o Director o Promoter
Clarification of Response (if Necessary)
  General Partner
Last Name First Name Middle Name
Vogt Stephen C
Street Address 1 Street Address 2
Mesirow Advanced Strategies, Inc. 353 North Clark Street, 16th Floor
City State/Province/Country ZIP/Postal Code
Chicago ILLINOIS 60654
Relationship: x Executive Officer x Director o Promoter
Clarification of Response (if Necessary)
   
Last Name First Name Middle Name
Rossman Howard M
Street Address 1 Street Address 2
Mesirow Advanced Strategies, Inc. 353 North Clark Street, 16th Floor
City State/Province/Country ZIP/Postal Code
Chicago ILLINOIS 60654
Relationship: x Executive Officer o Director o Promoter
Clarification of Response (if Necessary)
   
Last Name First Name Middle Name
Kaplan Martin B
Street Address 1 Street Address 2
Mesirow Advanced Strategies, Inc. 353 North Clark Street, 16th Floor
City State/Province/Country ZIP/Postal Code
Chicago ILLINOIS 60654
Relationship: x Executive Officer o Director o Promoter
Clarification of Response (if Necessary)
   
 
Last Name First Name Middle Name
Cornell Brian D
Street Address 1 Street Address 2
Mesirow Advanced Strategies, Inc. 353 North Clark Street, 16th Floor
City State/Province/Country ZIP/Postal Code
Chicago ILLINOIS 60654
Relationship: x Executive Officer o Director o Promoter
Clarification of Response (if Necessary)
   
Last Name First Name Middle Name
Siegel Eric D
Street Address 1 Street Address 2
Mesirow Advanced Strategies, Inc. 353 North Clark Street, 16th Floor
City State/Province/Country ZIP/Postal Code
Chicago ILLINOIS 60654
Relationship: x Executive Officer o Director o Promoter
Clarification of Response (if Necessary)
   
Last Name First Name Middle Name
Macina Thomas
Street Address 1 Street Address 2
Mesirow Advanced Strategies, Inc. 353 North Clark Street, 16th Floor
City State/Province/Country ZIP/Postal Code
Chicago ILLINOIS 60654
Relationship: x Executive Officer o Director o Promoter
Clarification of Response (if Necessary)
   
Last Name First Name Middle Name
Robbins Gregory J
Street Address 1 Street Address 2
Mesirow Advanced Strategies, Inc. 353 North Clark Street, 16th Floor
City State/Province/Country ZIP/Postal Code
Chicago ILLINOIS 60654
Relationship: x Executive Officer o Director o Promoter
Clarification of Response (if Necessary)
   
 
Last Name First Name Middle Name
Fedorinchik Greg
Street Address 1 Street Address 2
Mesirow Advanced Strategies, Inc. 353 North Clark Street, 16th Floor
City State/Province/Country ZIP/Postal Code
Chicago ILLINOIS 60654
Relationship: x Executive Officer o Director o Promoter
Clarification of Response (if Necessary)
   
Last Name First Name Middle Name
Burke Carolyn
Street Address 1 Street Address 2
Mesirow Advanced Strategies, Inc. 353 North Clark Street, 16th Floor
City State/Province/Country ZIP/Postal Code
Chicago ILLINOIS 60654
Relationship: x Executive Officer o Director o Promoter
Clarification of Response (if Necessary)
   
 


4. Industry Group
o Agriculture   Health Care o Retailing
  Banking & Financial Services   o Biotechnology o Restaurants
  o Commercial Banking   o Health Insurance   Technology
  o Insurance   o Hospitals & Physicians   o Computers
  o Investing   o Pharmaceuticals   o Telecommunications
  o Investment Banking   o Other Health Care   o Other Technology
  x Pooled Investment Fund
x Hedge Fund
o Other Investment Fund
o Private Equity Fund
o Venture Capital Fund

*Is the issuer registered as an investment company under the Investment Company Act of 1940?
o Yes   x No
        Travel
o Manufacturing   o Airlines & Airports
  Real Estate   o Lodging & Conventions
  o Commercial   o Tourism & Travel Services
  o Construction   o Other Travel
  o REITS & Finance o Other
  o Other Banking & Financial Services   o Residential  
  o Other Real Estate  
o Business Services  
  Energy  
  o Coal Mining  
  o Electric Utilities  
  o Energy Conservation  
  o Environmental Services  
  o Oil & Gas  
  o Other Energy  


5. Issuer Size
Revenue Range Aggregate Net Asset Value Range
o No Revenues o No Aggregate Net Asset Value
o $1 - $1,000,000 o $1 - $5,000,000
o $1,000,001 - $5,000,000 o $5,000,001 - $25,000,000
o $5,000,001 - $25,000,000 o $25,000,001 - $50,000,000
o $25,000,001 - $100,000,000 o $50,000,001 - $100,000,000
o Over $100,000,000 o Over $100,000,000
o Decline to Disclose x Decline to Disclose
o Not Applicable o Not Applicable


6. Federal Exemption(s) and Exclusion(s) Claimed (select all that apply)
o Rule 504(b)(1) (not (i), (ii) or (iii)) o Rule 505
o Rule 504 (b)(1)(i) x Rule 506
o Rule 504 (b)(1)(ii) o Securities Act Section 4(6)
o Rule 504 (b)(1)(iii) x Investment Company Act Section 3(c)
  o Section 3(c)(1) o Section 3(c)(9)
  o Section 3(c)(2) o Section 3(c)(10)
  o Section 3(c)(3) o Section 3(c)(11)
  o Section 3(c)(4) o Section 3(c)(12)
  o Section 3(c)(5) o Section 3(c)(13)
  o Section 3(c)(6) o Section 3(c)(14)
  x Section 3(c)(7)  

7. Type of Filing
o New Notice Date of First Sale   2004-04-01 o First Sale Yet to Occur
x Amendment

8. Duration of Offering
Does the Issuer intend this offering to last more than one year? x Yes o No

9. Type(s) of Securities Offered (select all that apply)
x Pooled Investment Fund Interests o Equity
o Tenant-in-Common Securities o Debt
o Mineral Property Securities o Option, Warrant or Other Right to Acquire Another Security
o Security to be Acquired Upon Exercise of Option, Warrant or Other Right to Acquire Security o Other (describe)
   


10. Business Combination Transaction
Is this offering being made in connection with a business combination transaction, such as a merger, acquisition or exchange offer? o Yes x No
 
Clarification of Response (if Necessary)  
   

11. Minimum Investment
Minimum investment accepted from any outside investor $   1000000   USD

12. Sales Compensation
Recipient Recipient CRD Number o None
  Mesirow Financial, Inc.   2764
(Associated) Broker or Dealer x None (Associated) Broker or Dealer CRD Number x None
       
Street Address 1 Street Address 2
  353 North Clark Street    
City State/Province/Country ZIP/Postal Code
  Chicago   ILLINOIS   60654
State(s) of Solicitation x All States o Foreign/Non-US
 
Recipient Recipient CRD Number o None
  Morgan Stanley Smith Barney LLC   149777
(Associated) Broker or Dealer x None (Associated) Broker or Dealer CRD Number x None
       
Street Address 1 Street Address 2
  2000 Westchester Avenue    
City State/Province/Country ZIP/Postal Code
  Purchase   NEW YORK   10577
State(s) of Solicitation x All States o Foreign/Non-US
 
Recipient Recipient CRD Number o None
  Wachovia Securities Inc.   19616
(Associated) Broker or Dealer x None (Associated) Broker or Dealer CRD Number x None
       
Street Address 1 Street Address 2
  One North Jefferson Avenue    
City State/Province/Country ZIP/Postal Code
  St. Louis   MISSOURI   63103
State(s) of Solicitation x All States o Foreign/Non-US
 
 
Recipient Recipient CRD Number o None
  Stifel, Nicholaus & Company, Inc.   793
(Associated) Broker or Dealer x None (Associated) Broker or Dealer CRD Number x None
       
Street Address 1 Street Address 2
  501 North Broadway    
City State/Province/Country ZIP/Postal Code
  St. Louis   MISSOURI   63102
State(s) of Solicitation x All States o Foreign/Non-US
 
 



13. Offering and Sales Amounts
Total Offering Amount $       USD x Indefinite
Total Amount Sold $   1639369660   USD  
Total Remaining to be Sold $       USD x Indefinite
 
Clarification of Response (if Necessary)
   


14. Investors
o Select if securities in the offering have been or may be sold to persons who do not qualify as accredited investors,
Number of such non-accredited investors who already have invested in the offering
 
  Regardless of whether securities in the offering have been or may be sold to persons who do not qualify as accredited investors, enter the total number of investors who already have invested in the offering: 126


15. Sales Commissions & Finders' Fees Expenses
Provide separately the amounts of sales commissions and finders' fees expenses, if any. If the amount of an expenditure is not known, provide an estimate and check the box next to the amount.
Sales Commissions $   1833110   USD x Estimate
Finders' Fees $   0   USD o Estimate
 
Clarification of Response (if Necessary)
  MAS compensates selling agents through sharing a portion of fees generated from the interests sold by the selling agents, w/o reimbursement from the Issuer. Selling agents are not paid out of the offering proceeds. Requested information commences 3/15/09.


16. Use of Proceeds
Provide the amount of the gross proceeds of the offering that has been or is proposed to be used for payments to any of the persons required to be named as executive officers, directors or promoters in response to Item 3 above. If the amount is unknown, provide an estimate and check the box next to the amount.
  $   0   USD o Estimate
 
Clarification of Response (if Necessary)
   

Signature and Submission
Please verify the information you have entered and review the Terms of Submission below before signing and clicking SUBMIT below to file this notice.
Terms of Submission  
  In submitting this notice, each Issuer named above is:  
 
  • Notifying the SEC and/or each State in which this notice is filed of the offering of securities described and undertaking to furnish them, upon written request, the information furnished to offerees.
  • Irrevocably appointing each of the Secretary of the SEC and, the Securities Administrator or other legally designated officer of the State in which the Issuer maintains its principal place of business and any State in which this notice is filed, as its agents for service of process, and agreeing that these persons may accept service on its behalf, of any notice, process or pleading, and further agreeing that such service may be made by registered or certified mail, in any Federal or state action, administrative proceeding, or arbitration brought against it in any place subject to the jurisdiction of the United States, if the action, proceeding or arbitration (a) arises out of any activity in connection with the offering of securities that is the subject of this notice, and (b) is founded, directly or indirectly, upon the provisions of: (i) the Securities Act of 1933, the Securities Exchange Act of 1934, the Trust Indenture Act of 1939, the Investment Company Act of 1940, or the Investment Advisers Act of 1940, or any rule or regulation under any of these statutes, or (ii) the laws of the State in which the issuer maintains its principal place of business or any State in which this notice is filed.
  • Certifying that the Issuer is not disqualified from relying on any Regulation D exemption it has identified in Item 6 above for one of the reasons stated in Rule 505(b)(2)(iii).
 
 
  Each Issuer identified above has read this notice, knows the contents to be true, and has duly caused this notice to be signed on its behalf by the undersigned duly authorized person.
  For signature, type in the signer's name or other letters or characters adopted or authorized as the signer's signature.

Issuer Signature Name of Signer Title Date
Mesirow Institutional Multi-Strategy Fund, L.P. Gregory J. Robbins Gregory J. Robbins General Counsel and Senior Managing Director of the GP 2012-03-15