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Filing Details

Accession Number:: 0001127602-11-015933
Form Type:: 4
Zero Holdings:: No
Publication Time:: 2011-05-11 19:12:50
Reporting Period:: 2011-05-10

Filing Date:: 2011-05-11
Accepted Time:: 2011-05-11 19:12:50
SEC Url:: Form 4 Filing

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
912145	Ameristar Casinos Inc	ASCA	Hotels & Motels (7011)	880304799

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1209843	Peter Walsh	16633 Ventura Boulevard Suite 1050 Encino CA 91436	Svp, Gc, Chief Admin Officer	No	Yes	No	No

Reported Non-Derivative Transactions

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Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Stock	Acquisiton	2011-05-10	10,000	$13.18	33,059	No	4	M	Indirect	Family Trust
Common Stock	Disposition	2011-05-10	1,300	$22.35	31,759	No	4	S	Indirect	Family Trust
Common Stock	Disposition	2011-05-10	200	$22.36	31,559	No	4	S	Indirect	Family Trust
Common Stock	Disposition	2011-05-10	200	$22.37	31,359	No	4	S	Indirect	Family Trust
Common Stock	Disposition	2011-05-10	100	$22.37	31,259	No	4	S	Indirect	Family Trust
Common Stock	Disposition	2011-05-10	400	$22.38	30,859	No	4	S	Indirect	Family Trust
Common Stock	Disposition	2011-05-10	100	$22.39	30,759	No	4	S	Indirect	Family Trust
Common Stock	Disposition	2011-05-10	1,100	$22.39	29,659	No	4	S	Indirect	Family Trust
Common Stock	Disposition	2011-05-10	400	$22.39	29,259	No	4	S	Indirect	Family Trust
Common Stock	Disposition	2011-05-10	733	$22.39	28,526	No	4	S	Indirect	Family Trust
Common Stock	Disposition	2011-05-10	200	$22.40	28,326	No	4	S	Indirect	Family Trust
Common Stock	Disposition	2011-05-10	900	$22.40	27,426	No	4	S	Indirect	Family Trust
Common Stock	Disposition	2011-05-10	1,167	$22.40	26,259	No	4	S	Indirect	Family Trust
Common Stock	Disposition	2011-05-10	100	$22.41	26,159	No	4	S	Indirect	Family Trust
Common Stock	Disposition	2011-05-10	600	$22.41	25,559	No	4	S	Indirect	Family Trust
Common Stock	Disposition	2011-05-10	400	$22.42	25,159	No	4	S	Indirect	Family Trust
Common Stock	Disposition	2011-05-10	100	$22.42	25,059	No	4	S	Indirect	Family Trust
Common Stock	Disposition	2011-05-10	500	$22.43	24,559	No	4	S	Indirect	Family Trust
Common Stock	Disposition	2011-05-10	500	$22.45	24,059	No	4	S	Indirect	Family Trust
Common Stock	Disposition	2011-05-10	200	$22.46	23,859	No	4	S	Indirect	Family Trust
Common Stock	Disposition	2011-05-10	500	$22.46	23,359	No	4	S	Indirect	Family Trust
Common Stock	Disposition	2011-05-10	300	$22.47	23,059	No	4	S	Indirect	Family Trust

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	M	Indirect	Family Trust
No	4	S	Indirect	Family Trust
No	4	S	Indirect	Family Trust
No	4	S	Indirect	Family Trust
No	4	S	Indirect	Family Trust
No	4	S	Indirect	Family Trust
No	4	S	Indirect	Family Trust
No	4	S	Indirect	Family Trust
No	4	S	Indirect	Family Trust
No	4	S	Indirect	Family Trust
No	4	S	Indirect	Family Trust
No	4	S	Indirect	Family Trust
No	4	S	Indirect	Family Trust
No	4	S	Indirect	Family Trust
No	4	S	Indirect	Family Trust
No	4	S	Indirect	Family Trust
No	4	S	Indirect	Family Trust
No	4	S	Indirect	Family Trust
No	4	S	Indirect	Family Trust
No	4	S	Indirect	Family Trust
No	4	S	Indirect	Family Trust
No	4	S	Indirect	Family Trust

Reported Derivative Transactions

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Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Common Stock	Stock Options (Right to Buy)	Disposition	2011-05-10	10,000	$0.00	10,000	$13.18

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
197,000	2003-04-02	2012-03-08	No	4	M	Indirect

Reported Non-Derivative Holdings

Sec. Name	Remaning Holdings	Nature of Ownership	Explanation
Common Stock	83,028	Direct

Footnotes

Securities owned by the Walsh Family Trust dated 9-11-03, of which Mr. Walsh and his spouse are co-trustees.
Constitutes restricted stock units and performance share units, each of which represents a right to receive one share of common stock in the future.
Option vested in five equal annual installments commencing on April 2, 2003.