FORM 4
[ X ] 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 or Section 30(h) of the Investment Company Act of 1940
                      

1. Name and Address of Reporting Person *

RICHARDSON J WILLIAM 		2. Issuer Name and Ticker or Trading Symbol

AMERISTAR CASINOS INC [ ASCA ] 		5. Relationship of Reporting Person(s) to Issuer (Check all applicable)

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

3773 HOWARD HUGHES PKWY, SUITE 490S 		3. Date of Earliest Transaction (MM/DD/YYYY)

8/13/2013
(Street)

LAS VEGAS, NV 89169
(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   8/13/2013     D    23620   D $26.50   (1) (2) 0   D    
Common Stock   8/13/2013     D    825   D $26.50   (2) 0   I   Family LLC   (3)

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
Stock Options (Right to Buy)   $22.09   8/13/2013     D         3750      (4) 7/29/2021   Common Stock   3750   $4.41   0   D    
Stock Options (Right to Buy)   $20.94   8/13/2013     D         13200      (4) 6/9/2016   Common Stock   13200   $5.56   0   D    
Stock Options (Right to Buy)   $18.62   8/13/2013     D         3750      (4) 7/31/2019   Common Stock   3750   $7.88   0   D    
Stock Options (Right to Buy)   $17.23   8/13/2013     D         7500      (4) 6/20/2018   Common Stock   7500   $9.27   0   D    
Stock Options (Right to Buy)   $16.68   8/13/2013     D         8210      (4) 7/25/2022   Common Stock   8210   $9.82   0   D    
Stock Options (Right to Buy)   $15.765   8/13/2013     D         15000      (4) 7/16/2014   Common Stock   15000   $10.735   0   D    
Stock Options (Right to Buy)   $15.62   8/13/2013     D         3750      (4) 7/30/2020   Common Stock   3750   $10.88   0   D    

Explanation of Responses:
( 1)  Pursuant to the terms of the issuer's applicable stock incentive plans and the terms of the Agreement and Plan of Merger (the "Merger") among the issuer, Pinnacle Entertainment, Inc., and certain affiliates of Pinnacle, vesting of restricted stock units included in these securities (if not already vested) was accelerated and such units were cancelled in the Merger in exchange for a cash payment equal to $26.50, the price payable by the acquirer in the Merger (the "Merger Price") for each share receivable in respect of such units.
( 2)  Pursuant to the Merger, all outstanding shares of common stock of the issuer were cancelled in exchange for the right to receive the Merger Price in cash.
( 3)  Securities owned by Richardson Family, LLC, of which Mr. Richardson is the sole managing member and of which Mr. Richardson's immediate family members are the only other members.
( 4)  Pursuant to the issuer's applicable stock incentive plans and the terms of the Merger, vesting of these options (if not already vested) was accelerated and such options were cancelled in the Merger in exchange for a cash payment, per share, equal to the difference between the Merger Price and the exercise price of the option.

Reporting Owners
Reporting Owner Name / Address
Relationships
Director 10% Owner Officer Other
RICHARDSON J WILLIAM
3773 HOWARD HUGHES PKWY
SUITE 490S
LAS VEGAS, NV 89169 		X



Signatures
/s/ Peter C. Walsh, Attorney-in-Fact 8/14/2013
** 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.
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