Ownership Submission
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

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(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
Culhane Mark
   2. Issuer Name and Ticker or Trading Symbol
DemandTec, Inc. [DMAN] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
EVP & Chief Financial Officer
(Last)
(First)
(Middle)
1 FRANKLIN PARKWAY, BUILDING 910		 3. Date of Earliest Transaction (Month/Day/Year)
01/15/2010
(Street)

SAN MATEO, CA 94403		 4. If Amendment, Date Original Filed(Month/Day/Year)
 6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)		 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction 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
Common Stock 01/15/2010   S(1)   14,219 D $ 7.065 (2) 65,200 D  
Common Stock               202,300 I by Trust1 (3)
Common Stock               9,000 I by Trust2 (4)
Common Stock               9,000 I by Trust3 (5)
Common Stock               9,000 I by Trust4 (6)

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 3)		 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction 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
(Month/Day/Year)		 7. Title and Amount of Underlying Securities
(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

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
Culhane Mark
1 FRANKLIN PARKWAY
BUILDING 910
SAN MATEO, CA 94403		       EVP & Chief Financial Officer  

Signatures

 By: Michael McAdam, Attorney in Fact For: Mark A. Culhane   01/20/2010
**Signature of Reporting Person Date

Explanation of Responses:

* 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).
(1) Sale effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on October 29, 2008.
(2) Average sale price of $7.0648 consists of the following blocks: 400 shares were sold at $7.00 per share; 1400 shares at $7.01; 900 shares at $7.02; 1519 shares at $7.03; 500 shares at $7.04; 2982 shares at $7.05; 300 shares at $7.055; 2418 shares at $7.06; 600 shares at $7.07; 300 shares at $7.08; 200 shares at $7.09; 300 shares at $7.10; 500 shares at $7.11; 400 shares at $7.12; 200 shares at $7.13; 700 shares at $7.20; 200 shares at $7.21; and 400 shares were sold at $7.22 per share.
(3) Shares held by Culhane Family Revocable Trust dated 12/16/99
(4) Shares held by Maxwell A. R. Culhane 1999 Irrevocable Trust
(5) Shares held by Michael D. Culhane 1999 Irrevocable Trust
(6) Shares held by Monica G. Culhane 1999 Irrevocable Trust

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