FORM 4
[ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).         
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES
                                                                                  
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Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public
Utility Holding Company Act of 1935 or Section 30(f) of the Investment Company Act of 1940
                      

1. Name and Address of Reporting Person *

CCM MASTER QUALIFIED FUND LTD 		2. Issuer Name and Ticker or Trading Symbol

ASPECT MEDICAL SYSTEMS INC [ ASPM ] 		5. Relationship of Reporting Person(s) to Issuer (Check all applicable)

_____ Director                      __ X __ 10% Owner
_____ Officer (give title below)      _____ Other (specify below)
(Last)          (First)          (Middle)

C/O MORGAN STANLEY FUND SERVICES (CAYMAN, LTD CENTURY YARD CRICKET SQ HUTCHINGS DR 		3. Date of Earliest Transaction (MM/DD/YYYY)

4/4/2008
(Street)

PO BOX 2681 GEORGE TOWN, E9 00000
(City)        (State)        (Zip)
4. If Amendment, Date Original Filed (MM/DD/YYYY)

 
6. Individual or Joint/Group Filing (Check Applicable Line)

___ Form filed by One Reporting Person
_ X _ Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3) 		2. Trans. Date 2A. Deemed Execution Date, if any 3. Trans. Code
(Instr. 8) 		4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5) 		5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4) 		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V Amount (A) or (D) Price
ASPM Common Stock   4/4/2008     X (2)    2200   A $15.02   2295849   D    
ASPM Common Stock                  2295849   I   Indirectly by Coghill Capital Management, LLC and Clint D. Coghill   (1)

Table II - Derivative Securities Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities)
1. Title of Derivate Security
(Instr. 3) 		2. Conversion or Exercise Price of Derivative Security 3. Trans. Date 3A. Deemed Execution Date, if any 4. Trans. Code
(Instr. 8) 		5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5) 		6. Date Exercisable and Expiration Date 7. Title and Amount of Securities Underlying Derivative Security
(Instr. 3 and 4) 		8. Price of Derivative Security
(Instr. 5) 		9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Short Put Option (Obligation to Buy)   $15   4/4/2008     X  (2)       22    4/4/2008   1/17/2009   ASPM Common Stock   2200   $0   693398   D    
Short Put Option (Obligation to Buy)   $15                   4/4/2008   1/17/2009   ASPM Common Stock   2200     693398   I   Indirectly by Coghill Capital Management, LLC and Clint D. Coghill   (1)

Explanation of Responses:
( 1)  These securities may be deemed to be beneficially owned by Coghill Capital Management, L.L.C. ("CCM"), the investment manager of CCM Master Qualified Fund, Ltd. (the "Master Fund"). These securities may also be deemed to be beneficially owned by Clint Coghill, the President and majority owner of CCM. Each of CCM and Mr. Coghill disclaims beneficial ownership of the reported securities except to the extent of its pecuniary interest therein, and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of the securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.
( 2)  Transaction was not at the discretion of the Reporting Person, rather were the result of exercised written put options.

Reporting Owners
Reporting Owner Name / Address
Relationships
Director 10% Owner Officer Other
CCM MASTER QUALIFIED FUND LTD
C/O MORGAN STANLEY FUND SERVICES (CAYMAN
LTD CENTURY YARD CRICKET SQ HUTCHINGS DR
PO BOX 2681 GEORGE TOWN, E9 00000
X

COGHILL CAPITAL MANAGEMENT LLC
1 N WACKER DR
STE 4350
CHICAGO, IL 60606
X

COGHILL CLINT D

 
X


Signatures
CCM Master Qualified Fund, Ltd 4/8/2008
** Signature of Reporting Person Date

Coghill Capital Management LLC 4/8/2008
** Signature of Reporting Person Date

Clint D Coghill 4/8/2008
** Signature of Reporting Person Date


Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number.
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