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
OMB APPROVAL
OMB Number: 3235-0287
Expires: January 31, 2005
Estimated average burden hours per response... 0.5

(Print or Type Responses)
1. Name and Address of Reporting Person *
FIEHLER SHARON D
  2. Issuer Name and Ticker or Trading Symbol
PEABODY ENERGY CORP [BTU]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
EVP - Chief Admin. Officer
(Last)
(First)
(Middle)
701 MARKET STREET
3. Date of Earliest Transaction (Month/Day/Year)
05/12/2008
(Street)

ST. LOUIS, MO 63101
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 05/12/2008   M(1)   6,348 A $ 17.8541 18,289 (2) D  
Common Stock 05/12/2008   M(1)   16,944 A $ 39.8143 35,233 (2) D  
Common Stock 05/12/2008   M(1)   10,036 A $ 34.9553 45,269 (2) D  
Common Stock 05/12/2008   S(1)   5,700 D $ 67 39,569 (2) D  
Common Stock 05/12/2008   S(1)   600 D $ 67.01 38,969 (2) D  
Common Stock 05/12/2008   S(1)   1,900 D $ 67.02 37,069 (2) D  
Common Stock 05/12/2008   S(1)   2,200 D $ 67.03 34,869 (2) D  
Common Stock 05/12/2008   S(1)   1,400 D $ 67.04 33,469 (2) D  
Common Stock 05/12/2008   S(1)   1,000 D $ 67.05 32,469 (2) D  
Common Stock 05/12/2008   S(1)   4,400 D $ 67.1 28,069 (2) D  
Common Stock 05/12/2008   S(1)   428 D $ 67.12 27,641 (2) D  
Common Stock 05/12/2008   S(1)   100 D $ 67.13 27,541 (2) D  
Common Stock 05/12/2008   S(1)   200 D $ 67.14 27,341 (2) D  
Common Stock 05/12/2008   S(1)   15,400 D $ 67.15 11,941 (2) D  
Common Stock 05/12/2008   S(1)   1,500 D $ 67 72,968 I by Family LLC
Common Stock 05/12/2008   S(1)   200 D $ 67.01 72,768 I by Family LLC
Common Stock 05/12/2008   S(1)   300 D $ 67.02 72,468 I by Family LLC
Common Stock 05/12/2008   S(1)   1,900 D $ 67.03 70,568 I by Family LLC
Common Stock 05/12/2008   S(1)   15,000 D $ 67.15 55,568 I by Family LLC
Common Stock 05/12/2008   S(1)   100 D $ 67.21 55,468 I by Family LLC
Common Stock 05/12/2008   S(1)   300 D $ 67.25 55,168 I by Family LLC
Common Stock 05/12/2008   S(1)   500 D $ 67.32 54,668 I by Family LLC
Common Stock 05/12/2008   S(1)   200 D $ 67.33 54,468 I by Family LLC
Common Stock 05/13/2008   S(1)   20,000 D $ 70 34,468 I by Family LLC

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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. SEC 1474 (9-02)

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
Employee Stock Option (right to buy) $ 17.8541 05/12/2008   M(1)     6,348 01/03/2008 01/03/2015 Common Stock 6,348 (3) 0 (4) D  
Employee Stock Option (right to buy) $ 39.8143 05/12/2008   M(1)     16,944   (5) 01/03/2016 Common Stock 16,944 (3) 8,472 (4) D  
Employee Stock Option (right to buy) $ 34.9553 05/12/2008   M(1)     10,036 01/03/2008 01/03/2017 Common Stock 10,036 (3) 20,071 (4) D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
FIEHLER SHARON D
701 MARKET STREET
ST. LOUIS, MO 63101
      EVP - Chief Admin. Officer  

Signatures

 Sharon D. Fiehler By: Kenneth L. Wagner Attorney-in-Fact   05/14/2008
**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) This transaction was effected pursuant to a pre-existing Rule 10b5-1 trading plan adopted by the reporting person.
(2) Includes 1,987 shares held by the reporting person in the Company's Employee Stock Purchase Plan.
(3) Not applicable.
(4) Does not include employee stock options with different expiration dates and exercise prices.
(5) The options vested in three equal annual installments beginning January 3, 2007.

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.

Potential persons who are to respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB number.