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 *

Stern William C 		2. Issuer Name and Ticker or Trading Symbol

Ancestry.com Inc. [ ACOM ] 		5. Relationship of Reporting Person(s) to Issuer (Check all applicable)

_____ Director                      _____ 10% Owner
__ X __ Officer (give title below)      _____ Other (specify below)
Gen. Counsel and Corp. Sec.
(Last)          (First)          (Middle)

360 WEST 4800 NORTH 		3. Date of Earliest Transaction (MM/DD/YYYY)

11/17/2010
(Street)

PROVO, UT 84604
(City)        (State)        (Zip)
4. If Amendment, Date Original Filed (MM/DD/YYYY)

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

_ X _ Form filed by One Reporting Person
___ 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
Common Stock, par value $.001   11/17/2010     M    20305   A $8.54   20305   D    
Common Stock, par value $.001   11/17/2010     S    20305   D $24.765   (1) 0   D    
Common Stock, par value $.001   11/18/2010     M    4695   A $8.54   4695   D    
Common Stock, par value $.001   11/18/2010     S    4695   D $24.765   0   D    

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
Common Stock Option (right to buy)   $8.54   11/17/2010     M         20305      (2) 7/20/2019   Common Stock, $0.001 par value   20305   $0.00   179695   D    
Common Stock Option (right to buy)   $8.54   11/18/2010     M         4695      (2) 7/20/2019   Common Stock, $0.001 par value   4695   $0.00   175000   D    

Explanation of Responses:
( 1)  The price reported in Column 4 is a net price, after deducting the underwriting discount and commissions from the public sale price of $26.00 in the Ancestry.com Inc. underwritten secondary public offering on November 17, 2010.
( 2)  Option granted on July 20, 2009. The option, representing a right to purchase 200,000 shares, vests over four years with 1/4 of the total number of shares subject to the option having vested on July 9, 2010 and 1/48 of the total number of shares subject to the option vesting monthly thereafter.

Reporting Owners
Reporting Owner Name / Address
Relationships
Director 10% Owner Officer Other
Stern William C
360 WEST 4800 NORTH
PROVO, UT 84604

Gen. Counsel and Corp. Sec.

Signatures
/s/ Christopher Brookhart, Attorney-in-Fact 11/19/2010
** 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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