EXHIBIT 4.21
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| This certificate also evidences and entitles the holder hereof Jo certain pigtys&s sej’ibthjinSa Rights Agreement, as it may from time to time be supplemented or amended (the “Rights Agreement” by and between ArchCoal, tap. (the “Company”) and the Rights Agent (as defined in the Rights Agreement), the terms of which are incorporatetfheTeW by reference and a copy of which is on file at the principal executive offices of the Company. Under certain circumstances, as set forth in the Rights Agreement, such Rights may expire or may be redeemed, exchanged or be evidenced by separate certificates and no longer be evidenced by this certificate. The Company will mail to the holder of this certificate a copy of the Rights Agreement without charge promptly after receipt of a written request therefor. Under certain circumstances, Rights issued to or held by Acquiring Persons or their Affiliates or Associates (as defined in the Rights Agreement) and any subsequent holder of such Rights may become null and void. Arch Coal, Inc. will furnish without charge to any stockholder who so requests to the Secretary of the Company at its principal place ofbusiness a statement describing the powers, designations, preferences and relative participating, optional or other special rights of each class of stock or series thereof and the qualifications, limitations or restrictions of such preferences andor rights. The following abbreviations, when used in the inscription on the face ol this certificate, shall be constated as though they were written out in lull according to applicable laws or regulations: TEN COM — as tenants in common UNIF GIFT MIN ACT- Custodian TENENT — as tenantry the entireties urJurlrm Gi.,s to Minor JTTEN — as joint tenants with right of .. survivorship and not as tenants isinioi1v in common UNIF TRF MIN ACT- Custodian (until age .)., under Unitbrrri Transfers (Minor) to Minors Act Additional abbreviations may also be used though not in the above list “ %’VoRVALUeRECEIVED, hereby sell, assign and transfer unto W.EASE INSERTSOTIAL SECURITY OR OTHER . IDENTIFYING NultmER OF ASSIGNBE c.lTT I VLESE PRINT OR TYPEWRITE NAME AND ADDRESS, INCLUDING ZIP CODE, OF ASSIGNEE) . . Shares .of jfie stock rSpftSSflted by the within Certificate, and do hereby irrevocably constitute and appoint ‘ .5Vttorney to transfer the said stock on the books of the within named Corporation with full power of substitution in the premises. Dated AFFIXED MEDAOION SIGNATURE ., GUARANTEE IMPRINT BELOW X — (SIGNATURE) i X (SIGNATURE) ABOVE SIQNATURE(S) TO THIS ASSIGNMENT MUST CORRESPOND WITH THE NAME AS WRITTEN UPON THE FACE OF THE CERTIFICATE IN EVERY PARTICULAR. WITHOUT ALTERATION OH ENLARGEMENT. OR ANY CHANGE WHATEVER THE SIGNATURES) MUST BE GUARANTEED BY AN ELIGIBLE GUARANTOR INSTITUTION SUCH AS A SECURITIES BROKERDEA LER. COMMERICAL BANK & TRUST COMPANY. SAVINGS AND LOAN ASSOCIATION OR A CREDIT UNION PARTICIPATING IN A MEDALLION PROGRAM APPROVED BY THE SECURITIES TRANSFER ASSOCIATION. INC |