Latest filings (excl ownership)
15-12B
Securities registration termination
31 Dec 15
EFFECT
Notice of effectiveness
21 Dec 15
EFFECT
Notice of effectiveness
21 Dec 15
EFFECT
Notice of effectiveness
21 Dec 15
EFFECT
Notice of effectiveness
21 Dec 15
EFFECT
Notice of effectiveness
21 Dec 15
EFFECT
Notice of effectiveness
21 Dec 15
8-K
MPLX and MarkWest announce successful completion of combination and director and executive appointments
10 Dec 15
POS AM
Prospectus update (post-effective amendment)
8 Dec 15
POS AM
Prospectus update (post-effective amendment)
8 Dec 15
POS AM
Prospectus update (post-effective amendment)
8 Dec 15
POS AM
Prospectus update (post-effective amendment)
8 Dec 15
POS AM
Prospectus update (post-effective amendment)
8 Dec 15
POS AM
Prospectus update (post-effective amendment)
8 Dec 15
S-8 POS
Registration of securities for employees (post-effective amendment)
8 Dec 15
S-8 POS
Registration of securities for employees (post-effective amendment)
8 Dec 15
S-8 POS
Registration of securities for employees (post-effective amendment)
8 Dec 15
S-8 POS
Registration of securities for employees (post-effective amendment)
8 Dec 15
S-8 POS
Registration of securities for employees (post-effective amendment)
8 Dec 15
25-NSE
Exchange delisting
7 Dec 15
8-K
MPLX LP and MarkWest Energy Partners, L.P. Announce Successful Early Note Exchange Tender Period
4 Dec 15
425
Business combination disclosure
3 Dec 15
425
Business combination disclosure
3 Dec 15
425
Business combination disclosure
3 Dec 15
8-K
MarkWest unitholders approve combination with MPLX
2 Dec 15
425
Business combination disclosure
1 Dec 15
425
Business combination disclosure
24 Nov 15
425
Business combination disclosure
23 Nov 15
425
Business combination disclosure
20 Nov 15
425
Business combination disclosure
20 Nov 15
PX14A6G
Letter to shareholders
20 Nov 15
425
Business combination disclosure
19 Nov 15
425
Business combination disclosure
19 Nov 15
PX14A6G
Letter to shareholders
19 Nov 15
425
Business combination disclosure
18 Nov 15
425
Business combination disclosure
17 Nov 15
425
Business combination disclosure
17 Nov 15
425
Business combination disclosure
17 Nov 15
425
Business combination disclosure
17 Nov 15
425
Business combination disclosure
17 Nov 15
Latest ownership filings
SC 13G/A
Markwest Energy Partners L P
3 Feb 16
SC 13D/A
Markwest Energy Partners L P
9 Dec 15
4
Nancy Buese
8 Dec 15
4
FRANK M SEMPLE
8 Dec 15
4
Paula L Rosson
8 Dec 15
4
JOHN C MOLLENKOPF
8 Dec 15
4
J MICHAEL STICE
8 Dec 15
4
Mounsey Anne E Fox
8 Dec 15
4
Gregory Scott Floerke
8 Dec 15
4
RANDALL J LARSON
8 Dec 15
4
MICHAEL L BEATTY
8 Dec 15
4
WILLIAM P NICOLETTI
8 Dec 15
4
DONALD D WOLF
8 Dec 15
4
C Corwin Bromley
8 Dec 15
4
WILLIAM A BRUCKMANN III
8 Dec 15
4
RANDY S NICKERSON
8 Dec 15
4
DONALD C HEPPERMANN
8 Dec 15
4
C Corwin Bromley
3 Dec 15
4
Gregory Scott Floerke
3 Dec 15
4
JOHN C MOLLENKOPF
3 Dec 15
4
RANDY S NICKERSON
3 Dec 15
SC 13D
Markwest Energy Partners L P
18 Nov 15
SC 13D
Markwest Energy Partners L P
18 Nov 15
SC 13D
Markwest Energy Partners L P
17 Nov 15
4
RANDY S NICKERSON
14 Jul 15
3
Gregory Scott Floerke
10 Jun 15
4
Gregory Scott Floerke
10 Jun 15
3
J MICHAEL STICE
5 Jun 15
4
J MICHAEL STICE
5 Jun 15
4
RANDY S NICKERSON
1 Jun 15
4
RANDY S NICKERSON
8 May 15
4
RANDY S NICKERSON
10 Apr 15
4
Nancy Buese
31 Mar 15
SC 13G/A
Markwest Energy Partners L P
17 Feb 15
SC 13G/A
Markwest Energy Partners L P
13 Feb 15
SC 13G
Markwest Energy Partners L P
10 Feb 15
SC 13G
Markwest Energy Partners L P
21 Jan 15
SC 13G/A
Markwest Energy Partners L P
14 Jan 15
SC 13G/A
Markwest Energy Partners L P
14 Feb 14
SC 13G
Markwest Energy Partners L P
13 Feb 14