SEC Seal
SEC Banner
Search the Next-Generation EDGAR System
Filing Detail
Form S-3ASR - Automatic shelf registration statement of securities of well-known seasoned issuers:
SEC Accession No. 0001047469-15-006713
Filing Date
2015-08-07
Accepted
2015-08-07 16:29:20
Documents
10
Effectiveness Date
2015-08-07

Document Format Files

Seq Description Document Type Size
1 S-3ASR a2225651zs-3asr.htm S-3ASR 560468
2 EX-5.1 a2225651zex-5_1.htm EX-5.1 21159
3 EX-8.1 a2225651zex-8_1.htm EX-8.1 14513
4 EX-12.1 a2225651zex-12_1.htm EX-12.1 55441
5 EX-21.1 a2225651zex-21_1.htm EX-21.1 42344
6 EX-23.1 a2225651zex-23_1.htm EX-23.1 2556
7 EX-25.1 a2225651zex-25_1.htm EX-25.1 223760
8 G171112KCI001.GIF g171112kci001.gif GRAPHIC 2369
9 G171112KCI002.GIF g171112kci002.gif GRAPHIC 1484
10 G171112KMI001.JPG g171112kmi001.jpg GRAPHIC 2046
  Complete submission text file 0001047469-15-006713.txt   950576
Mailing Address 1515 ARAPAHOE STREET, TOWER 2, SUITE 700 DENVER CO 80202-2126
Business Address 1515 ARAPAHOE STREET, TOWER 2, SUITE 700 DENVER CO 80202-2126 303-925-9200
MARKWEST HYDROCARBON INC (Filer) CIK: 0001019756 (see all company filings)

IRS No.: 841352233 | State of Incorp.: DE | Fiscal Year End: 1231
Type: S-3ASR | Act: 33 | File No.: 333-206234-09 | Film No.: 151037875
SIC: 1311 Crude Petroleum & Natural Gas

Mailing Address 1515 ARAPAHOE STREET TOWER 1, SUITE 1600 DENVER CO 80202
Business Address 1515 ARAPAHOE STREET TOWER 1, SUITE 1600 DENVER CO 80202 303-925-9200
MARKWEST ENERGY PARTNERS L P (Filer) CIK: 0001166036 (see all company filings)

IRS No.: 270005456 | Fiscal Year End: 1231
Type: S-3ASR | Act: 33 | File No.: 333-206234 | Film No.: 151037866
SIC: 1311 Crude Petroleum & Natural Gas

Mailing Address 1515 ARAPAHOE STREET, TOWER 2, SUITE 700 DENVER CO 80202-2126
Business Address 1515 ARAPAHOE STREET, TOWER 2, SUITE 700 DENVER CO 80202-2126 303-925-9200
MarkWest Energy Operating CO LLC (Filer) CIK: 0001292406 (see all company filings)

IRS No.: 270005448 | State of Incorp.: DE | Fiscal Year End: 1231
Type: S-3ASR | Act: 33 | File No.: 333-206234-17 | Film No.: 151037883

Mailing Address 1515 ARAPAHOE STREET, TOWER 2, SUITE 700 DENVER CO 80202-2126
Business Address 1515 ARAPAHOE STREET, TOWER 2, SUITE 700 DENVER CO 80202-2126 303-925-9200
West Shore Processing CO LLC (Filer) CIK: 0001292408 (see all company filings)

IRS No.: 760501616 | State of Incorp.: MI | Fiscal Year End: 1231
Type: S-3ASR | Act: 33 | File No.: 333-206234-16 | Film No.: 151037882

Mailing Address 1515 ARAPAHOE STREET, TOWER 2, SUITE 700 DENVER CO 80202-2126
Business Address 1515 ARAPAHOE STREET, TOWER 2, SUITE 700 DENVER CO 80202-2126 303-925-9200
MarkWest Energy Appalachia LLC (Filer) CIK: 0001292409 (see all company filings)

IRS No.: 470852385 | State of Incorp.: DE | Fiscal Year End: 1231
Type: S-3ASR | Act: 33 | File No.: 333-206234-15 | Film No.: 151037881

Mailing Address 1515 ARAPAHOE STREET, TOWER 2, SUITE 70 DENVER CO 80202-2126
Business Address 1515 ARAPAHOE STREET, TOWER 2, SUITE 70 DENVER CO 80202-2126 303-925-9200
MarkWest Michigan Pipeline CO LLC (Filer) CIK: 0001292411 (see all company filings)

IRS No.: 830375568 | State of Incorp.: MI | Fiscal Year End: 1231
Type: S-3ASR | Act: 33 | File No.: 333-206234-13 | Film No.: 151037879

Mailing Address 1515 ARAPAHOE STREET, TOWER 2, SUITE 700 DENVER CO 80202-2126
Business Address 1515 ARAPAHOE STREET, TOWER 2, SUITE 700 DENVER CO 80202-2126 303-925-9200
MarkWest Oklahoma Gas CO LLC (Filer) CIK: 0001292413 (see all company filings)

IRS No.: 861089780 | State of Incorp.: OK | Fiscal Year End: 1231
Type: S-3ASR | Act: 33 | File No.: 333-206234-12 | Film No.: 151037878

Mailing Address 1515 ARAPAHOE STREET, TOWER 2, SUITE 700 DENVER CO 80202-2126
Business Address 1515 ARAPAHOE STREET, TOWER 2, SUITE 700 DENVER CO 80202-2126 303-925-9200
MarkWest Power Tex LLC (Filer) CIK: 0001292414 (see all company filings)

IRS No.: 450537840 | State of Incorp.: TX | Fiscal Year End: 1231
Type: S-3ASR | Act: 33 | File No.: 333-206234-29 | Film No.: 151037895

Mailing Address 1515 ARAPAHOE STREET, TOWER 2, SUITE 700 DENVER CO 80202-2126
Business Address 1515 ARAPAHOE STREET, TOWER 2, SUITE 700 DENVER CO 80202-2126 303-925-9200
MarkWest Pinnacle LLC (Filer) CIK: 0001292415 (see all company filings)

IRS No.: 300157461 | State of Incorp.: TX | Fiscal Year End: 1231
Type: S-3ASR | Act: 33 | File No.: 333-206234-10 | Film No.: 151037876

Mailing Address 1515 ARAPAHOE STREET, TOWER 2, SUITE 700 DENVER CO 80202
Business Address 1515 ARAPAHOE STREET, TOWER 2, SUITE 700 DENVER CO 80202 303-925-9200
MarkWest PNG Utility LLC (Filer) CIK: 0001292416 (see all company filings)

IRS No.: 300157467 | State of Incorp.: TX | Fiscal Year End: 1231
Type: S-3ASR | Act: 33 | File No.: 333-206234-32 | Film No.: 151037898

Mailing Address 1515 ARAPAHOE STREET, TOWER 2, SUITE 700 DENVER CO 80202-2126
Business Address 1515 ARAPAHOE STREET, TOWER 2, SUITE 700 DENVER CO 80202-2126 303-925-9200
MarkWest Texas PNG Utility LLC (Filer) CIK: 0001292417 (see all company filings)

IRS No.: 300157468 | State of Incorp.: TX | Fiscal Year End: 1231
Type: S-3ASR | Act: 33 | File No.: 333-206234-31 | Film No.: 151037897

Mailing Address 1515 ARAPAHOE STREET, TOWER 2, SUITE 700 DENVER CO 80202-2126
Business Address 1515 ARAPAHOE STREET, TOWER 2, SUITE 700 DENVER CO 80202-2126 303-925-9200
MarkWest Blackhawk LLC (Filer) CIK: 0001292418 (see all company filings)

IRS No.: 300157471 | State of Incorp.: TX | Fiscal Year End: 1231
Type: S-3ASR | Act: 33 | File No.: 333-206234-30 | Film No.: 151037896

Mailing Address 1515 ARAPAHOE STREET, TOWER 2, SUITE 700 DENVER CO 80202-2126
Business Address 1515 ARAPAHOE STREET, TOWER 2, SUITE 700 DENVER CO 80202-2126 303-925-9200
MarkWest New Mexico LLC (Filer) CIK: 0001292419 (see all company filings)

IRS No.: 300157474 | State of Incorp.: TX | Fiscal Year End: 1231
Type: S-3ASR | Act: 33 | File No.: 333-206234-11 | Film No.: 151037877

Mailing Address 1515 ARAPAHOE STREET, TOWER 2, SUITE 700 DENVER CO 80202-2126
Business Address 1515 ARAPAHOE STREET, TOWER 2, SUITE 700 DENVER CO 80202-2126 303-925-9200
MarkWest Pipeline CO LLC (Filer) CIK: 0001315242 (see all company filings)

IRS No.: 000000000 | State of Incorp.: TX | Fiscal Year End: 1231
Type: S-3ASR | Act: 33 | File No.: 333-206234-28 | Film No.: 151037894

Mailing Address 1515 ARAPAHOE STREET, TOWER 2, SUITE 700 DENVER CO 80202-2126
Business Address 1515 ARAPAHOE STREET, TOWER 2, SUITE 700 DENVER CO 80202-2126 303-925-9200
MarkWest Energy East Texas Gas CO LLC (Filer) CIK: 0001315262 (see all company filings)

IRS No.: 201311706 | State of Incorp.: DE | Fiscal Year End: 1231
Type: S-3ASR | Act: 33 | File No.: 333-206234-27 | Film No.: 151037893

Mailing Address 1515 ARAPAHOE STREET, TOWER 2, SUITE 700 DENVER CO 80202-2126
Business Address 1515 ARAPAHOE STREET, TOWER 2, SUITE 700 DENVER CO 80202-2126 303-925-9200
MarkWest Energy Finance CORP (Filer) CIK: 0001315263 (see all company filings)

IRS No.: 201805917 | State of Incorp.: DE | Fiscal Year End: 1231
Type: S-3ASR | Act: 33 | File No.: 333-206234-18 | Film No.: 151037884
SIC: 1311 Crude Petroleum & Natural Gas

Mailing Address 1515 ARAPAHOE STREET TOWER 2, SUITE 700 DENVER CO 80202-2126
Business Address 1515 ARAPAHOE STREET TOWER 2, SUITE 700 DENVER CO 80202-2126 303-925-9278
Markwest Javelina Pipeline CO LLC (Filer) CIK: 0001349174 (see all company filings)

IRS No.: 382909338 | State of Incorp.: TX | Fiscal Year End: 1231
Type: S-3ASR | Act: 33 | File No.: 333-206234-23 | Film No.: 151037889

Mailing Address 1515 ARAPAHOE STREET TOWER 2, SUITE 700 DENVER CO 80202-2126
Business Address 1515 ARAPAHOE STREET TOWER 2, SUITE 700 DENVER CO 80202-2126 303-925-9200
MarkWest Javelina CO LLC (Filer) CIK: 0001349175 (see all company filings)

IRS No.: 760263770 | State of Incorp.: TX | Fiscal Year End: 1231
Type: S-3ASR | Act: 33 | File No.: 333-206234-24 | Film No.: 151037890

Mailing Address 1515 ARAPAHOE STREET, TOWER 2, SUITE 700 DENVER CO 80202
Business Address 1515 ARAPAHOE STREET, TOWER 2, SUITE 700 DENVER CO 80202 303-925-9200
MarkWest Energy GP, L.L.C. (Filer) CIK: 0001412304 (see all company filings)

IRS No.: 010636219
Type: S-3ASR | Act: 33 | File No.: 333-206234-19 | Film No.: 151037885

Mailing Address 1515 ARAPAHOE STREET TOWER II, SUITE 700 HOUSTON TX 80202
Business Address 1515 ARAPAHOE STREET TOWER II, SUITE 700 HOUSTON TX 80202 3039259200
Mason Pipeline LTD Liability CO (Filer) CIK: 0001435921 (see all company filings)

IRS No.: 000000000 | State of Incorp.: MI | Fiscal Year End: 1231
Type: S-3ASR | Act: 33 | File No.: 333-206234-14 | Film No.: 151037880

Mailing Address 1515 ARAPAHOE STREET TOWER II, SUITE 700 HOUSTON TX 80202
Business Address 1515 ARAPAHOE STREET TOWER II, SUITE 700 HOUSTON TX 80202 3039259200
MarkWest Marketing, L.L.C. (Filer) CIK: 0001435922 (see all company filings)

IRS No.: 262430225 | State of Incorp.: DE | Fiscal Year End: 1231
Type: S-3ASR | Act: 33 | File No.: 333-206234-08 | Film No.: 151037874

Mailing Address 1515 ARAPAHOE STREET TOWER II, SUITE 700 HOUSTON TX 80202
Business Address 1515 ARAPAHOE STREET TOWER II, SUITE 700 HOUSTON TX 80202 3039259200
MarkWest Gas Services, L.L.C. (Filer) CIK: 0001435923 (see all company filings)

IRS No.: 261795927 | State of Incorp.: TX | Fiscal Year End: 1231
Type: S-3ASR | Act: 33 | File No.: 333-206234-20 | Film No.: 151037886

Mailing Address 1515 ARAPAHOE STREET TOWER II, SUITE 700 HOUSTON TX 80202
Business Address 1515 ARAPAHOE STREET TOWER II, SUITE 700 HOUSTON TX 80202 3039259200
MarkWest Liberty Gas Gathering, L.L.C. (Filer) CIK: 0001435924 (see all company filings)

IRS No.: 262368254 | State of Incorp.: DE | Fiscal Year End: 1231
Type: S-3ASR | Act: 33 | File No.: 333-206234-21 | Film No.: 151037887

Mailing Address 1515 ARAPAHOE STREET TOWER II, SUITE 700 DENVER CO 80202
Business Address 1515 ARAPAHOE STREET TOWER II, SUITE 700 DENVER CO 80202 3039259200
Matrex, L.L.C. (Filer) CIK: 0001435926 (see all company filings)

IRS No.: 841349848 | State of Incorp.: MI | Fiscal Year End: 1231
Type: S-3ASR | Act: 33 | File No.: 333-206234-22 | Film No.: 151037888

Mailing Address 1515 ARAPAHOE STREET TOWER 2, SUITE 700 DENVER CO 80202-2126
Business Address 1515 ARAPAHOE STREET TOWER 2, SUITE 700 DENVER CO 80202-2126 303-925-9200
MarkWest Gas Marketing, L.L.C. (Filer) CIK: 0001457473 (see all company filings)

IRS No.: 262827902 | State of Incorp.: TX | Fiscal Year End: 1231
Type: S-3ASR | Act: 33 | File No.: 333-206234-07 | Film No.: 151037873

Mailing Address 1515 ARAPAHOE STREET TOWER 2, SUITE 700 DENVER CO 80202-2126
Business Address 1515 ARAPAHOE STREET TOWER 2, SUITE 700 DENVER CO 80202-2126 303-925-9200
MarkWest McAlester, L.L.C. (Filer) CIK: 0001457474 (see all company filings)

IRS No.: 263195589 | State of Incorp.: OK | Fiscal Year End: 1231
Type: S-3ASR | Act: 33 | File No.: 333-206234-06 | Film No.: 151037872

Mailing Address 1515 ARAPAHOE STREET TOWER 1, SUITE 1600 DENVER CO 80202-2137
Business Address 1515 ARAPAHOE STREET TOWER 1, SUITE 1600 DENVER CO 80202-2137 (303) 925-9200
MarkWest Ranger Pipeline Company, L.L.C. (Filer) CIK: 0001512400 (see all company filings)

IRS No.: 274613260 | State of Incorp.: DE | Fiscal Year End: 1231
Type: S-3ASR | Act: 33 | File No.: 333-206234-05 | Film No.: 151037871

Mailing Address 1515 ARAPAHOE STREET TOWER I, STE. 1600 DENVER CO 80202-2137
Business Address 1515 ARAPAHOE STREET TOWER I, STE. 1600 DENVER CO 80202-2137 (303) 925-9200
MarkWest Mountaineer Pipeline Company, L.L.C. (Filer) CIK: 0001533090 (see all company filings)

IRS No.: 453160452 | State of Incorp.: DE | Fiscal Year End: 1231
Type: S-3ASR | Act: 33 | File No.: 333-206234-04 | Film No.: 151037870

Mailing Address 1515 ARAPAHOE STREET, TOWER 1 SUITE 1600 DENVER CO 80202
Business Address 1515 ARAPAHOE STREET, TOWER 1 SUITE 1600 DENVER CO 80202 (303) 925-9200
MarkWest Utica Operating Company, L.L.C. (Filer) CIK: 0001555528 (see all company filings)

IRS No.: 800773356 | State of Incorp.: DE | Fiscal Year End: 1231
Type: S-3ASR | Act: 33 | File No.: 333-206234-03 | Film No.: 151037869

Mailing Address 1515 ARAPAHOE STREET TOWER 1, SUITE 1600 DENVER CO 80202
Business Address 1515 ARAPAHOE STREET TOWER 1, SUITE 1600 DENVER CO 80202 (303) 925-9200
MarkWest Texas LPG Pipeline, L.L.C. (Filer) CIK: 0001565135 (see all company filings)

IRS No.: 900906688 | State of Incorp.: TX | Fiscal Year End: 1231
Type: S-3ASR | Act: 33 | File No.: 333-206234-01 | Film No.: 151037867

Mailing Address 1515 ARAPAHOE STREET, TOWER 1 SUITE 1600 DENVER CO 80202
Business Address 1515 ARAPAHOE STREET, TOWER 1 SUITE 1600 DENVER CO 80202 303-925-9200
MarkWest Buffalo Creek Gas Company, L.L.C. (Filer) CIK: 0001625169 (see all company filings)

IRS No.: 320408108 | State of Incorp.: DE | Fiscal Year End: 1231
Type: S-3ASR | Act: 33 | File No.: 333-206234-02 | Film No.: 151037868

Mailing Address 1515 ARAPAHOE STREET, TOWER 1 SUITE 1600 DENVER CO 80202
Business Address 1515 ARAPAHOE STREET, TOWER 1 SUITE 1600 DENVER CO 80202 303-925-9200
MarkWest Energy South Texas Gas Company, L.L.C. (Filer) CIK: 0001625171 (see all company filings)

IRS No.: 800901416 | State of Incorp.: DE | Fiscal Year End: 1231
Type: S-3ASR | Act: 33 | File No.: 333-206234-26 | Film No.: 151037892

Mailing Address 1515 ARAPAHOE STREET TOWER 1, SUITE 1600 DENVER CO 80202
Business Address 1515 ARAPAHOE STREET TOWER 1, SUITE 1600 DENVER CO 80202 (303) 925-9200
MarkWest Energy West Texas Gas Company, L.L.C. (Filer) CIK: 0001643186 (see all company filings)

IRS No.: 352530047 | State of Incorp.: DE | Fiscal Year End: 1231
Type: S-3ASR | Act: 33 | File No.: 333-206234-25 | Film No.: 151037891