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Home > Insider Trading > Filing (0001140361-10-050801)

Filing Details

Accession Number:: 0001140361-10-050801
Form Type:: 4
Zero Holdings:: No
Publication Time:: 2010-12-21 16:50:46
Reporting Period:: 2010-12-21

Filing Date:: 2010-12-21
Accepted Time:: 2010-12-21 16:50:46
SEC Url:: Form 4 Filing

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1441849	Cloud Peak Energy Inc.	CLD	Bituminous Coal & Lignite Surface Mining (1221)	263088162

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
863064	Plc Tinto Rio	2 Eastbourne Terrace London X0 W2 6LG		Yes	No	Yes	No
865109	Rio Tinto America Inc	4700 Daybreak Parkway South Jordan UT 84095		Yes	No	Yes	No
1212357	Rio Tinto America Holdings Inc	4700 Daybreak Parkway South Jordan UT 84095		Yes	No	Yes	No
1476850	Rio Tinto Energy America Inc	4700 Daybreak Parkway South Jordan UT 84095		Yes	No	Yes	No
1476851	Ltd Holdings European Tinto Rio	2 Eastbourne Terrace London X0 W2 6LG		Yes	No	Yes	No
1476852	Ltd Holdings Western Tinto Rio	2 Eastbourne Terrace London X0 W2 6LG		Yes	No	Yes	No
1476980	Kennecott Management Services Co	4700 Daybreak Parkway South Jordan UT 84095		Yes	No	Yes	No

Reported Non-Derivative Transactions

Show Other Fields >>

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Stock	Acquisiton	2010-12-21	29,400,000	$0.00	29,400,000	No	4	C	Indirect	See footnote
Common Stock	Disposition	2010-12-21	29,400,000	$19.50	0	No	4	S	Indirect	See footnote

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	C	Indirect	See footnote
No	4	S	Indirect	See footnote

Reported Derivative Transactions

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Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Common Stock, Par Value $0.01 Per Share, Of Cld	Common Membership Units	Disposition	2010-12-21	29,400,000	$0.00	29,400,000	$0.00

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
0			No	4	C	Indirect

Footnotes

For text of footnote 1, see Exhibit 99.1.
For text of footnote 2, see Exhibit 99.1.