Westlake Chemical Partners LP

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Westlake Chemical Partners LP
TickerWLKP
CIK #0001604665
CUSIP960417103
SectorLife Sciences - Industrial Organic Chemicals
Address2801 Post Oak Boulevard Suite 600, Houston, TX 77056
Source [EDGAR]
CIK Filing 2011 - 2026
[0001604665] 10-K
[0001604665] 10-Q
[0001604665] 3
[0001604665] 4
[0001604665] 8-K
[0001604665] SC 13D
[0001604665] SC 13G
Form 13D/13G Filer Form 13D/13G Subject Filed % Owned
Energy Income Partners LLC Westlake Chemical Partners LP [2026-02-17] 0.0
Energy Income Partners LLC Westlake Chemical Partners LP [2025-08-14] 0.0
First Trust Portfolios LP Westlake Chemical Partners LP [2021-01-11] 5.1
Energy Income Partners LLC Westlake Chemical Partners LP [2020-02-14] 6.4
Invesco Ltd Westlake Chemical Partners LP [2019-06-10] 18.2
TTWF LP Westlake Chemical Partners LP [2019-04-08] 40.13
Janus Henderson Group PLC Westlake Chemical Partners LP [2019-02-13] 5.5
Westlake Chemical Partners LP WPT LLC [2019-02-06] 43.8
Harvest Fund Advisors LLC Westlake Chemical Partners LP [2018-04-03] 0.0
Harvest Fund Advisors LLC Westlake Chemical Partners LP [2017-10-26] 10.0
Energy Income Partners LLC Westlake Chemical Partners LP [2017-02-14] 5.4
OppenheimerFunds Inc Westlake Chemical Partners LP [2016-01-07] 13.67
Balyasny Asset Management LLC Westlake Chemical Partners LP [2015-05-21] 2.35
BAMCO Inc /NY/ Westlake Chemical Partners LP [2015-02-17] 6.05
Goldman Sachs Asset Management LP Westlake Chemical Partners LP [2015-02-13] 6.7
WPT LLC Westlake Chemical Partners LP [2015-02-13] 52.2
Harvest Fund Advisors LLC Westlake Chemical Partners LP [2014-08-11] 17.6
Form 3/4/5 Filer 2011 - 2026
Westlake Chemical Partners LP
Baksht Jonathan
Woelfel Randy
Friel Lisa A
Finley G Stephen
Moore Amy Ellender
Chao James
Gilson Jean-Marc
Kenner Andrew
Holy Jeffrey Adam
Minas Angela A
Janssens Thomas J
Zoeller Johnathan Stevan
Chao Albert
Ederington L Benjamin
Bender Mark Steven
Teel Lawrence E
Mangieri George J
Lukens Max L
Lumpkins David
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Blackstone Securities Partners LP
Blackstone Harvest HoldCo LLC
Blackstone Advisory Services LLC
Blackstone Holdings I LP
Blackstone Holdings I/II GP Inc
Harvest Fund Advisors LLC
Blackstone Intermediary HoldCo LLC
Harvest Fund HoldCo LP
Schwarzman Stephen A
Blackstone Group Inc
Blackstone Group Management LLC
Westlake Chemical Investments Inc
Westlake Polymers LLC
Westlake Corp
WPT LLC
TTWF LP
Westlake Olefins Corp
Adams Gary Kramer
Hansen David R
Jenkins Dorothy C
Westlake Chemical Partners GP LLC
Westlake International Services Corp
Insider Transaction (Form 3/4/5) Date Action Shares Price Value ($)
Common Units
2025-08-27 Buy 95.29 $21.25 2,025
Common Units
2025-08-21 Buy 1,250 $22.02 27,525
Common Units
2025-08-20 Buy 1,250 $21.86 27,325
Common Units
2025-08-15 Buy 4,700 $21.84 102,648
Woelfel Randy
Common Units
2025-08-07 Option exercise 4,882
Woelfel Randy
Common Units
2025-08-07 Disposed to issuer 4,882 $21.96 107,209
Friel Lisa A
Common Units
2025-08-07 Option exercise 4,882
Finley G Stephen
Common Units
2025-08-07 Option exercise 4,882
Friel Lisa A
Common Units
2025-08-07 Disposed to issuer 2,441 $21.96 53,604
Finley G Stephen
Phantom Units · derivative
2025-08-07 Option exercise 4,882 $0.00
Friel Lisa A
Phantom Units · derivative
2025-08-07 Option exercise 4,882 $0.00
Woelfel Randy
Phantom Units · derivative
2025-08-07 Option exercise 4,882 $0.00
Finley G Stephen
Phantom Units · derivative
2025-08-06 Grant 5,005 $0.00
Woelfel Randy
Phantom Units · derivative
2025-08-06 Grant 5,005 $0.00
Friel Lisa A
Phantom Units · derivative
2025-08-06 Grant 5,005 $0.00
Chao James
Common Units
2025-05-29 Sell 3,700 $22.10 81,770
Common Units
2025-05-29 Buy 93.73 $22.20 2,081
Chao James
Common Units
2025-05-28 Sell 4,600 $22.10 101,660
Chao James
Common Units
2025-05-27 Sell 5,608 $22.17 124,329
Common Units
2025-02-25 Buy 82.51 $24.75 2,042
showing 20 of 200 most recent transactions
13F Ownership Over TimeHoldersShares Held
2026-03-31 58 10,270,529
2025-12-31 60 10,269,981
2025-09-30 58 10,191,310
2025-06-30 60 10,220,072
2025-03-31 54 10,223,176
2024-12-31 53 10,496,601
2024-09-30 57 10,342,743
2024-06-30 59 10,373,930
2024-03-31 62 10,952,713
2023-12-31 62 10,797,317
2023-09-30 55 10,568,739
2023-06-30 54 10,584,355
Form 13F Holdings
Firm Period DFND Voting Shares
Gilman Hill Asset Management LLC [2026-06-30] SOLE 88,279 88,279
HM Payson & Co [2026-06-30] OTR 0 1,233
Financial Management Professionals Inc [2026-06-30] SOLE 0 500
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