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LLC · Connecticut registry

MAINLINE GP, LLC

LLC in Location not reported, Connecticut · Document #1031051 · Active

Record reference date: October 18, 2026

Details may be incomplete or outdated. “Not reported” means a usable value is unavailable.

About this record

MAINLINE GP, LLC is an active Connecticut limited liability company filed on March 10, 2011 (document 1031051). Its registered agent is COGENCY GLOBAL INC..

Registration details

Status
ActiveRecord reference date: October 18, 2026
Entity type
Limited Liability Company
Filed
March 10, 2011Reported filing date
Document number
1031051
Registration jurisdiction
Connecticut
Principal city + ZIP
Connecticut registry 77027
Registered agent
COGENCY GLOBAL INC.
Home state
Delaware
Industry (NAICS)
Pipeline Transportation of Refined Petroleum Products (486910) · null
Address
4200 Westheimer Road, Suite 975, HOUSTON, TX, 77027

Registered agent and officers

Names and roles are reported on filings; matching names do not establish identity or ownership.

Registered agent
COGENCY GLOBAL INC.
Principal
Buckeye GP LLC

What this status means / annual report due date

Connecticut reports an active registration. This does not by itself establish good standing, licensing, ownership or that the business is currently trading.

Connecticut LLC annual reports are filed January 1 through March 31, starting in the year after registration. Other entity types can have different reporting schedules.

Additional business details

View historical details and available fields

Historical values may differ from the registration summary.

Record reference date: 2026-11-02

Directory details

Names

Legal
MAINLINE GP, LLC
Home Jurisdiction
MAINLINE GP, LLC

Entity

Type
Limited liability company

Registration

Status
Active
Number
1031051
Citizenship
Foreign
Home Country
US
Formation Place
DE
Home Jurisdiction
DE

Dates

Annual Report Due
2027-03-31
Began Transacting
2011-03-10
Registration
2011-03-10

Addresses

Business · Street 1
4200 Westheimer Road, Suite 975
Business · City
Houston
Business · Country
US
Business · Postal Code
77027
Business · Region
TX
Mailing · Text
4200 Westheimer Road, Suite 975 , ,HOUSTON ,TX ,United States ,77027
Mailing Home Jurisdiction · Text
850 New Burton Rd Ste 201, Dover, DE, 19904-5786, United States
Mailing Home Jurisdiction · Street 1
850 New Burton Rd Ste 201
Mailing Home Jurisdiction · City
Dover
Mailing Home Jurisdiction · Region
DE
Mailing Home Jurisdiction · Postal Code
19904-5786
Mailing Home Jurisdiction · Country
US
Office Home Jurisdiction · Text
850 New Burton Rd Ste 201, Dover, DE, 19904-5786, United States
Office Home Jurisdiction · Street 1
850 New Burton Rd Ste 201
Office Home Jurisdiction · City
Dover
Office Home Jurisdiction · Region
DE
Office Home Jurisdiction · Postal Code
19904-5786
Office Home Jurisdiction · Country
US

Contacts

Business Email
complianceteam@cogencyglobal.com

Self Reported Characteristics

Woman Owned
No
Veteran Owned
No
Minority Owned
No
Disability Owned
No
Lgbtqi Owned
No

Industry

Naics Code
Pipeline Transportation of Refined Petroleum Products (486910)
Naics Sub Code
551114

Additional reported values

Other reported details

Id
001t000000WnZKnAAN
Business Type
LLC
Status
Active
Account Number
1031051
Annual Report Due Date
03/31/2027
Began Transacting in CT
03/10/2011
Citizenship
Foreign
Date Registration
03/10/2011
Formation Place
DE
Woman Owned Organization
false
Veteran Owned Organization
false
Minority Owned Organization
false
Org Owned by Person s with disabilities
false
CREATE DT
2026-11-02 00:16:48.8000000

Names and reported roles

Name
MAINLINE GP, LLC
Business Name in state country
MAINLINE GP, LLC

Addresses and locations

Business Street
4200 Westheimer Road, Suite 975
Business City
HOUSTON
Business Country
United States
Business ZIP
77027
Business State
TX
Country Formation
United States
State or Territory Formation
DE
Office Jurisdiction Address
850 New Burton Rd Ste 201, Dover, DE, 19904-5786, United States
Office Jurisdiction Business Street
850 New Burton Rd Ste 201
Office Jurisdiction Business City
Dover
Office Jurisdiction Business State
DE
Office Jurisdiction Business Zip Code
19904-5786
Office in Jurisdiction Country
United States

Mailing information

Business Email Address
complianceteam@cogencyglobal.com
Mailing Address
4200 Westheimer Road, Suite 975 , ,HOUSTON ,TX ,United States ,77027
Mailing Jurisdiction Address
850 New Burton Rd Ste 201, Dover, DE, 19904-5786, United States
Mailing Jurisdiction Business Street
850 New Burton Rd Ste 201
Mailing Jurisdiction Business City
Dover
Mailing Jurisdiction Business State
DE
Mailing Jurisdiction Business Zip Code
19904-5786
Mailing Jurisdiction Country
United States

IRS reported fields and codes

Organization is LGBTQI Owned
false

Industry and classification

NAICS Code
Pipeline Transportation of Refined Petroleum Products (486910)
NAICS Sub Code
551114

Record reference date: 2026-10-24

Directory details

Names

Legal
MAINLINE GP, LLC
Home Jurisdiction
MAINLINE GP, LLC

Entity

Type
Limited liability company

Registration

Status
Active
Number
1031051
Citizenship
Foreign
Home Country
US
Formation Place
DE
Home Jurisdiction
DE

Dates

Annual Report Due
2027-03-31
Began Transacting
2011-03-10
Registration
2011-03-10

Addresses

Business · Street 1
4200 Westheimer Road, Suite 975
Business · City
Houston
Business · Country
US
Business · Postal Code
77027
Business · Region
TX
Mailing · Text
4200 Westheimer Road, Suite 975 , ,HOUSTON ,TX ,United States ,77027
Mailing Home Jurisdiction · Text
850 New Burton Rd Ste 201, Dover, DE, 19904-5786, United States
Mailing Home Jurisdiction · Street 1
850 New Burton Rd Ste 201
Mailing Home Jurisdiction · City
Dover
Mailing Home Jurisdiction · Region
DE
Mailing Home Jurisdiction · Postal Code
19904-5786
Mailing Home Jurisdiction · Country
US
Office Home Jurisdiction · Text
850 New Burton Rd Ste 201, Dover, DE, 19904-5786, United States
Office Home Jurisdiction · Street 1
850 New Burton Rd Ste 201
Office Home Jurisdiction · City
Dover
Office Home Jurisdiction · Region
DE
Office Home Jurisdiction · Postal Code
19904-5786
Office Home Jurisdiction · Country
US

Contacts

Business Email
complianceteam@cogencyglobal.com

Self Reported Characteristics

Woman Owned
No
Veteran Owned
No
Minority Owned
No
Disability Owned
No
Lgbtqi Owned
No

Industry

Naics Code
Pipeline Transportation of Refined Petroleum Products (486910)
Naics Sub Code
551114

Additional reported values

Other reported details

Id
001t000000WnZKnAAN
Business Type
LLC
Status
Active
Account Number
1031051
Annual Report Due Date
03/31/2027
Began Transacting in CT
03/10/2011
Citizenship
Foreign
Date Registration
03/10/2011
Formation Place
DE
Woman Owned Organization
false
Veteran Owned Organization
false
Minority Owned Organization
false
Org Owned by Person s with disabilities
false
CREATE DT
2026-10-24 00:16:36.8000000

Names and reported roles

Name
MAINLINE GP, LLC
Business Name in state country
MAINLINE GP, LLC

Addresses and locations

Business Street
4200 Westheimer Road, Suite 975
Business City
HOUSTON
Business Country
United States
Business ZIP
77027
Business State
TX
Country Formation
United States
State or Territory Formation
DE
Office Jurisdiction Address
850 New Burton Rd Ste 201, Dover, DE, 19904-5786, United States
Office Jurisdiction Business Street
850 New Burton Rd Ste 201
Office Jurisdiction Business City
Dover
Office Jurisdiction Business State
DE
Office Jurisdiction Business Zip Code
19904-5786
Office in Jurisdiction Country
United States

Mailing information

Business Email Address
complianceteam@cogencyglobal.com
Mailing Address
4200 Westheimer Road, Suite 975 , ,HOUSTON ,TX ,United States ,77027
Mailing Jurisdiction Address
850 New Burton Rd Ste 201, Dover, DE, 19904-5786, United States
Mailing Jurisdiction Business Street
850 New Burton Rd Ste 201
Mailing Jurisdiction Business City
Dover
Mailing Jurisdiction Business State
DE
Mailing Jurisdiction Business Zip Code
19904-5786
Mailing Jurisdiction Country
United States

IRS reported fields and codes

Organization is LGBTQI Owned
false

Industry and classification

NAICS Code
Pipeline Transportation of Refined Petroleum Products (486910)
NAICS Sub Code
551114

Record reference date: 2026-10-23

Directory details

Names

Legal
MAINLINE GP, LLC
Home Jurisdiction
MAINLINE GP, LLC

Entity

Type
Limited liability company

Registration

Status
Active
Number
1031051
Citizenship
Foreign
Home Country
US
Formation Place
DE
Home Jurisdiction
DE

Dates

Annual Report Due
2027-03-31
Began Transacting
2011-03-10
Registration
2011-03-10

Addresses

Business · Street 1
4200 Westheimer Road, Suite 975
Business · City
Houston
Business · Country
US
Business · Postal Code
77027
Business · Region
TX
Mailing · Text
4200 Westheimer Road, Suite 975 , ,HOUSTON ,TX ,United States ,77027
Mailing Home Jurisdiction · Text
850 New Burton Rd Ste 201, Dover, DE, 19904-5786, United States
Mailing Home Jurisdiction · Street 1
850 New Burton Rd Ste 201
Mailing Home Jurisdiction · City
Dover
Mailing Home Jurisdiction · Region
DE
Mailing Home Jurisdiction · Postal Code
19904-5786
Mailing Home Jurisdiction · Country
US
Office Home Jurisdiction · Text
850 New Burton Rd Ste 201, Dover, DE, 19904-5786, United States
Office Home Jurisdiction · Street 1
850 New Burton Rd Ste 201
Office Home Jurisdiction · City
Dover
Office Home Jurisdiction · Region
DE
Office Home Jurisdiction · Postal Code
19904-5786
Office Home Jurisdiction · Country
US

Contacts

Business Email
complianceteam@cogencyglobal.com

Self Reported Characteristics

Woman Owned
No
Veteran Owned
No
Minority Owned
No
Disability Owned
No
Lgbtqi Owned
No

Industry

Naics Code
Pipeline Transportation of Refined Petroleum Products (486910)
Naics Sub Code
551114

Additional reported values

Other reported details

Id
001t000000WnZKnAAN
Business Type
LLC
Status
Active
Account Number
1031051
Annual Report Due Date
03/31/2027
Began Transacting in CT
03/10/2011
Citizenship
Foreign
Date Registration
03/10/2011
Formation Place
DE
Woman Owned Organization
false
Veteran Owned Organization
false
Minority Owned Organization
false
Org Owned by Person s with disabilities
false
CREATE DT
2026-10-23 00:16:35.7100000

Names and reported roles

Name
MAINLINE GP, LLC
Business Name in state country
MAINLINE GP, LLC

Addresses and locations

Business Street
4200 Westheimer Road, Suite 975
Business City
HOUSTON
Business Country
United States
Business ZIP
77027
Business State
TX
Country Formation
United States
State or Territory Formation
DE
Office Jurisdiction Address
850 New Burton Rd Ste 201, Dover, DE, 19904-5786, United States
Office Jurisdiction Business Street
850 New Burton Rd Ste 201
Office Jurisdiction Business City
Dover
Office Jurisdiction Business State
DE
Office Jurisdiction Business Zip Code
19904-5786
Office in Jurisdiction Country
United States

Mailing information

Business Email Address
complianceteam@cogencyglobal.com
Mailing Address
4200 Westheimer Road, Suite 975 , ,HOUSTON ,TX ,United States ,77027
Mailing Jurisdiction Address
850 New Burton Rd Ste 201, Dover, DE, 19904-5786, United States
Mailing Jurisdiction Business Street
850 New Burton Rd Ste 201
Mailing Jurisdiction Business City
Dover
Mailing Jurisdiction Business State
DE
Mailing Jurisdiction Business Zip Code
19904-5786
Mailing Jurisdiction Country
United States

IRS reported fields and codes

Organization is LGBTQI Owned
false

Industry and classification

NAICS Code
Pipeline Transportation of Refined Petroleum Products (486910)
NAICS Sub Code
551114

Record reference date: 2026-10-22

Directory details

Names

Legal
MAINLINE GP, LLC
Home Jurisdiction
MAINLINE GP, LLC

Entity

Type
Limited liability company

Registration

Status
Active
Number
1031051
Citizenship
Foreign
Home Country
US
Formation Place
DE
Home Jurisdiction
DE

Dates

Annual Report Due
2027-03-31
Began Transacting
2011-03-10
Registration
2011-03-10

Addresses

Business · Street 1
4200 Westheimer Road, Suite 975
Business · City
Houston
Business · Country
US
Business · Postal Code
77027
Business · Region
TX
Mailing · Text
4200 Westheimer Road, Suite 975 , ,HOUSTON ,TX ,United States ,77027
Mailing Home Jurisdiction · Text
850 New Burton Rd Ste 201, Dover, DE, 19904-5786, United States
Mailing Home Jurisdiction · Street 1
850 New Burton Rd Ste 201
Mailing Home Jurisdiction · City
Dover
Mailing Home Jurisdiction · Region
DE
Mailing Home Jurisdiction · Postal Code
19904-5786
Mailing Home Jurisdiction · Country
US
Office Home Jurisdiction · Text
850 New Burton Rd Ste 201, Dover, DE, 19904-5786, United States
Office Home Jurisdiction · Street 1
850 New Burton Rd Ste 201
Office Home Jurisdiction · City
Dover
Office Home Jurisdiction · Region
DE
Office Home Jurisdiction · Postal Code
19904-5786
Office Home Jurisdiction · Country
US

Contacts

Business Email
complianceteam@cogencyglobal.com

Self Reported Characteristics

Woman Owned
No
Veteran Owned
No
Minority Owned
No
Disability Owned
No
Lgbtqi Owned
No

Industry

Naics Code
Pipeline Transportation of Refined Petroleum Products (486910)
Naics Sub Code
551114

Additional reported values

Other reported details

Id
001t000000WnZKnAAN
Business Type
LLC
Status
Active
Account Number
1031051
Annual Report Due Date
03/31/2027
Began Transacting in CT
03/10/2011
Citizenship
Foreign
Date Registration
03/10/2011
Formation Place
DE
Woman Owned Organization
false
Veteran Owned Organization
false
Minority Owned Organization
false
Org Owned by Person s with disabilities
false
CREATE DT
2026-10-22 00:17:10.2533333

Names and reported roles

Name
MAINLINE GP, LLC
Business Name in state country
MAINLINE GP, LLC

Addresses and locations

Business Street
4200 Westheimer Road, Suite 975
Business City
HOUSTON
Business Country
United States
Business ZIP
77027
Business State
TX
Country Formation
United States
State or Territory Formation
DE
Office Jurisdiction Address
850 New Burton Rd Ste 201, Dover, DE, 19904-5786, United States
Office Jurisdiction Business Street
850 New Burton Rd Ste 201
Office Jurisdiction Business City
Dover
Office Jurisdiction Business State
DE
Office Jurisdiction Business Zip Code
19904-5786
Office in Jurisdiction Country
United States

Mailing information

Business Email Address
complianceteam@cogencyglobal.com
Mailing Address
4200 Westheimer Road, Suite 975 , ,HOUSTON ,TX ,United States ,77027
Mailing Jurisdiction Address
850 New Burton Rd Ste 201, Dover, DE, 19904-5786, United States
Mailing Jurisdiction Business Street
850 New Burton Rd Ste 201
Mailing Jurisdiction Business City
Dover
Mailing Jurisdiction Business State
DE
Mailing Jurisdiction Business Zip Code
19904-5786
Mailing Jurisdiction Country
United States

IRS reported fields and codes

Organization is LGBTQI Owned
false

Industry and classification

NAICS Code
Pipeline Transportation of Refined Petroleum Products (486910)
NAICS Sub Code
551114

Record reference date: 2026-10-21

Directory details

Names

Legal
MAINLINE GP, LLC
Home Jurisdiction
MAINLINE GP, LLC

Entity

Type
Limited liability company

Registration

Status
Active
Number
1031051
Citizenship
Foreign
Home Country
US
Formation Place
DE
Home Jurisdiction
DE

Dates

Annual Report Due
2027-03-31
Began Transacting
2011-03-10
Registration
2011-03-10

Addresses

Business · Street 1
4200 Westheimer Road, Suite 975
Business · City
Houston
Business · Country
US
Business · Postal Code
77027
Business · Region
TX
Mailing · Text
4200 Westheimer Road, Suite 975 , ,HOUSTON ,TX ,United States ,77027
Mailing Home Jurisdiction · Text
850 New Burton Rd Ste 201, Dover, DE, 19904-5786, United States
Mailing Home Jurisdiction · Street 1
850 New Burton Rd Ste 201
Mailing Home Jurisdiction · City
Dover
Mailing Home Jurisdiction · Region
DE
Mailing Home Jurisdiction · Postal Code
19904-5786
Mailing Home Jurisdiction · Country
US
Office Home Jurisdiction · Text
850 New Burton Rd Ste 201, Dover, DE, 19904-5786, United States
Office Home Jurisdiction · Street 1
850 New Burton Rd Ste 201
Office Home Jurisdiction · City
Dover
Office Home Jurisdiction · Region
DE
Office Home Jurisdiction · Postal Code
19904-5786
Office Home Jurisdiction · Country
US

Contacts

Business Email
complianceteam@cogencyglobal.com

Self Reported Characteristics

Woman Owned
No
Veteran Owned
No
Minority Owned
No
Disability Owned
No
Lgbtqi Owned
No

Industry

Naics Code
Pipeline Transportation of Refined Petroleum Products (486910)
Naics Sub Code
551114

Additional reported values

Other reported details

Id
001t000000WnZKnAAN
Business Type
LLC
Status
Active
Account Number
1031051
Annual Report Due Date
03/31/2027
Began Transacting in CT
03/10/2011
Citizenship
Foreign
Date Registration
03/10/2011
Formation Place
DE
Woman Owned Organization
false
Veteran Owned Organization
false
Minority Owned Organization
false
Org Owned by Person s with disabilities
false
CREATE DT
2026-10-21 00:17:05.3666667

Names and reported roles

Name
MAINLINE GP, LLC
Business Name in state country
MAINLINE GP, LLC

Addresses and locations

Business Street
4200 Westheimer Road, Suite 975
Business City
HOUSTON
Business Country
United States
Business ZIP
77027
Business State
TX
Country Formation
United States
State or Territory Formation
DE
Office Jurisdiction Address
850 New Burton Rd Ste 201, Dover, DE, 19904-5786, United States
Office Jurisdiction Business Street
850 New Burton Rd Ste 201
Office Jurisdiction Business City
Dover
Office Jurisdiction Business State
DE
Office Jurisdiction Business Zip Code
19904-5786
Office in Jurisdiction Country
United States

Mailing information

Business Email Address
complianceteam@cogencyglobal.com
Mailing Address
4200 Westheimer Road, Suite 975 , ,HOUSTON ,TX ,United States ,77027
Mailing Jurisdiction Address
850 New Burton Rd Ste 201, Dover, DE, 19904-5786, United States
Mailing Jurisdiction Business Street
850 New Burton Rd Ste 201
Mailing Jurisdiction Business City
Dover
Mailing Jurisdiction Business State
DE
Mailing Jurisdiction Business Zip Code
19904-5786
Mailing Jurisdiction Country
United States

IRS reported fields and codes

Organization is LGBTQI Owned
false

Industry and classification

NAICS Code
Pipeline Transportation of Refined Petroleum Products (486910)
NAICS Sub Code
551114

Record reference date: 2026-10-20

Directory details

Names

Legal
MAINLINE GP, LLC
Home Jurisdiction
MAINLINE GP, LLC

Entity

Type
Limited liability company

Registration

Status
Active
Number
1031051
Citizenship
Foreign
Home Country
US
Formation Place
DE
Home Jurisdiction
DE

Dates

Annual Report Due
2027-03-31
Began Transacting
2011-03-10
Registration
2011-03-10

Addresses

Business · Street 1
4200 Westheimer Road, Suite 975
Business · City
Houston
Business · Country
US
Business · Postal Code
77027
Business · Region
TX
Mailing · Text
4200 Westheimer Road, Suite 975 , ,HOUSTON ,TX ,United States ,77027
Mailing Home Jurisdiction · Text
850 New Burton Rd Ste 201, Dover, DE, 19904-5786, United States
Mailing Home Jurisdiction · Street 1
850 New Burton Rd Ste 201
Mailing Home Jurisdiction · City
Dover
Mailing Home Jurisdiction · Region
DE
Mailing Home Jurisdiction · Postal Code
19904-5786
Mailing Home Jurisdiction · Country
US
Office Home Jurisdiction · Text
850 New Burton Rd Ste 201, Dover, DE, 19904-5786, United States
Office Home Jurisdiction · Street 1
850 New Burton Rd Ste 201
Office Home Jurisdiction · City
Dover
Office Home Jurisdiction · Region
DE
Office Home Jurisdiction · Postal Code
19904-5786
Office Home Jurisdiction · Country
US

Contacts

Business Email
complianceteam@cogencyglobal.com

Self Reported Characteristics

Woman Owned
No
Veteran Owned
No
Minority Owned
No
Disability Owned
No
Lgbtqi Owned
No

Industry

Naics Code
Pipeline Transportation of Refined Petroleum Products (486910)
Naics Sub Code
551114

Additional reported values

Other reported details

Id
001t000000WnZKnAAN
Business Type
LLC
Status
Active
Account Number
1031051
Annual Report Due Date
03/31/2027
Began Transacting in CT
03/10/2011
Citizenship
Foreign
Date Registration
03/10/2011
Formation Place
DE
Woman Owned Organization
false
Veteran Owned Organization
false
Minority Owned Organization
false
Org Owned by Person s with disabilities
false
CREATE DT
2026-10-20 00:17:01.7933333

Names and reported roles

Name
MAINLINE GP, LLC
Business Name in state country
MAINLINE GP, LLC

Addresses and locations

Business Street
4200 Westheimer Road, Suite 975
Business City
HOUSTON
Business Country
United States
Business ZIP
77027
Business State
TX
Country Formation
United States
State or Territory Formation
DE
Office Jurisdiction Address
850 New Burton Rd Ste 201, Dover, DE, 19904-5786, United States
Office Jurisdiction Business Street
850 New Burton Rd Ste 201
Office Jurisdiction Business City
Dover
Office Jurisdiction Business State
DE
Office Jurisdiction Business Zip Code
19904-5786
Office in Jurisdiction Country
United States

Mailing information

Business Email Address
complianceteam@cogencyglobal.com
Mailing Address
4200 Westheimer Road, Suite 975 , ,HOUSTON ,TX ,United States ,77027
Mailing Jurisdiction Address
850 New Burton Rd Ste 201, Dover, DE, 19904-5786, United States
Mailing Jurisdiction Business Street
850 New Burton Rd Ste 201
Mailing Jurisdiction Business City
Dover
Mailing Jurisdiction Business State
DE
Mailing Jurisdiction Business Zip Code
19904-5786
Mailing Jurisdiction Country
United States

IRS reported fields and codes

Organization is LGBTQI Owned
false

Industry and classification

NAICS Code
Pipeline Transportation of Refined Petroleum Products (486910)
NAICS Sub Code
551114

Record reference date: 2026-10-18

Directory details

Names

Legal
MAINLINE GP, LLC
Home Jurisdiction
MAINLINE GP, LLC

Entity

Type
Limited liability company

Registration

Status
Active
Number
1031051
Citizenship
Foreign
Home Country
US
Formation Place
DE
Home Jurisdiction
DE

Dates

Annual Report Due
2027-03-31
Began Transacting
2011-03-10
Registration
2011-03-10

Addresses

Business · Street 1
4200 Westheimer Road, Suite 975
Business · City
Houston
Business · Country
US
Business · Postal Code
77027
Business · Region
TX
Mailing · Text
4200 Westheimer Road, Suite 975 , ,HOUSTON ,TX ,United States ,77027
Mailing Home Jurisdiction · Text
850 New Burton Rd Ste 201, Dover, DE, 19904-5786, United States
Mailing Home Jurisdiction · Street 1
850 New Burton Rd Ste 201
Mailing Home Jurisdiction · City
Dover
Mailing Home Jurisdiction · Region
DE
Mailing Home Jurisdiction · Postal Code
19904-5786
Mailing Home Jurisdiction · Country
US
Office Home Jurisdiction · Text
850 New Burton Rd Ste 201, Dover, DE, 19904-5786, United States
Office Home Jurisdiction · Street 1
850 New Burton Rd Ste 201
Office Home Jurisdiction · City
Dover
Office Home Jurisdiction · Region
DE
Office Home Jurisdiction · Postal Code
19904-5786
Office Home Jurisdiction · Country
US

Contacts

Business Email
complianceteam@cogencyglobal.com

Self Reported Characteristics

Woman Owned
No
Veteran Owned
No
Minority Owned
No
Disability Owned
No
Lgbtqi Owned
No

Industry

Naics Code
Pipeline Transportation of Refined Petroleum Products (486910)
Naics Sub Code
551114

Additional reported values

Other reported details

Id
001t000000WnZKnAAN
Business Type
LLC
Status
Active
Account Number
1031051
Annual Report Due Date
03/31/2027
Began Transacting in CT
03/10/2011
Citizenship
Foreign
Date Registration
03/10/2011
Formation Place
DE
Woman Owned Organization
false
Veteran Owned Organization
false
Minority Owned Organization
false
Org Owned by Person s with disabilities
false
CREATE DT
2026-10-18 00:17:50.2933333

Names and reported roles

Name
MAINLINE GP, LLC
Business Name in state country
MAINLINE GP, LLC

Addresses and locations

Business Street
4200 Westheimer Road, Suite 975
Business City
HOUSTON
Business Country
United States
Business ZIP
77027
Business State
TX
Country Formation
United States
State or Territory Formation
DE
Office Jurisdiction Address
850 New Burton Rd Ste 201, Dover, DE, 19904-5786, United States
Office Jurisdiction Business Street
850 New Burton Rd Ste 201
Office Jurisdiction Business City
Dover
Office Jurisdiction Business State
DE
Office Jurisdiction Business Zip Code
19904-5786
Office in Jurisdiction Country
United States

Mailing information

Business Email Address
complianceteam@cogencyglobal.com
Mailing Address
4200 Westheimer Road, Suite 975 , ,HOUSTON ,TX ,United States ,77027
Mailing Jurisdiction Address
850 New Burton Rd Ste 201, Dover, DE, 19904-5786, United States
Mailing Jurisdiction Business Street
850 New Burton Rd Ste 201
Mailing Jurisdiction Business City
Dover
Mailing Jurisdiction Business State
DE
Mailing Jurisdiction Business Zip Code
19904-5786
Mailing Jurisdiction Country
United States

IRS reported fields and codes

Organization is LGBTQI Owned
false

Industry and classification

NAICS Code
Pipeline Transportation of Refined Petroleum Products (486910)
NAICS Sub Code
551114

Download directory record (JSON)

All retained directory fields

Other reported details

Id
14841318
Slug
mainline-gp-llc-1031051
Entity type
Limited Liability Company
Entity class
llc
Is foreign
1
Registry
CT
Doc number
1031051
Filed on
2011-03-10
Status
Active
Is active
1
Domicile
DE
Status known
1
Observed at
2026-10-18T19:49:17.610236+00:00

Addresses and locations

State
CT
City slug
location-not-reported
Address
4200 Westheimer Road, Suite 975, HOUSTON, TX, 77027
Zip
77027
Location state
TX

Names and reported roles

Name
MAINLINE GP, LLC
City name
Location not reported

Industry and classification

Naics code
Pipeline Transportation of Refined Petroleum Products (486910)

Additional Connecticut registry details

Linked through the registry’s business ID. Agents and principals are reported roles and do not establish beneficial ownership. Contact and residence addresses are labeled as reported.

Record reference date: 2026-10-18.

Registered and alternate business names

Roles are shown as reported. Agents, officers and principals are not automatically owners.

Business names

Registered name
MAINLINE GP, LLC
Name in home jurisdiction
MAINLINE GP, LLC

Complete business master fields

Other reported details

Id
001t000000WnZKnAAN
Business Type
LLC
Status
Active
Account Number
1031051
Annual Report Due Date
03/31/2027
Began Transacting in CT
03/10/2011
Citizenship
Foreign
Date Registration
03/10/2011
Formation Place
DE
Woman Owned Organization
false
Veteran Owned Organization
false
Minority Owned Organization
false
Org Owned by Person s with disabilities
false
CREATE DT
2026-10-18 00:17:50.2933333

Names and reported roles

Name
MAINLINE GP, LLC
Business Name in state country
MAINLINE GP, LLC

Addresses and locations

Business Street
4200 Westheimer Road, Suite 975
Business City
HOUSTON
Business Country
United States
Business ZIP
77027
Business State
TX
Country Formation
United States
State or Territory Formation
DE
Office Jurisdiction Address
850 New Burton Rd Ste 201, Dover, DE, 19904-5786, United States
Office Jurisdiction Business Street
850 New Burton Rd Ste 201
Office Jurisdiction Business City
Dover
Office Jurisdiction Business State
DE
Office Jurisdiction Business Zip Code
19904-5786
Office in Jurisdiction Country
United States

Mailing information

Business Email Address
complianceteam@cogencyglobal.com
Mailing Address
4200 Westheimer Road, Suite 975 , ,HOUSTON ,TX ,United States ,77027
Mailing Jurisdiction Address
850 New Burton Rd Ste 201, Dover, DE, 19904-5786, United States
Mailing Jurisdiction Business Street
850 New Burton Rd Ste 201
Mailing Jurisdiction Business City
Dover
Mailing Jurisdiction Business State
DE
Mailing Jurisdiction Business Zip Code
19904-5786
Mailing Jurisdiction Country
United States

IRS reported fields and codes

Organization is LGBTQI Owned
false

Industry and classification

NAICS Code
Pipeline Transportation of Refined Petroleum Products (486910)
NAICS Sub Code
551114

Registered agents (1)

Reported name and role

Roles are shown as reported. Agents, officers and principals are not automatically owners.

Registered agents

Registered agent
COGENCY GLOBAL INC.Find records reporting this name →

Parsed registry details

Identifiers

Agent Alei
US-CT.BER:0169652

Parties

Reported · Source Type
Business
Reported · Name
COGENCY GLOBAL INC.

Contacts

Agent Phone
8666213524
Agent Email
statrep@cogencyglobal.com

Addresses

Business · Text
29 W High St, East Hampton, CT, 06424-1024, United States
Business · Street 1
29 W High St
Business · City
East Hampton
Business · Region
CT
Business · Postal Code
06424-1024
Business · Country
US
Mailing · Text
29 W High St, East Hampton, CT, 06424-1024, United States
Mailing · Street 1
29 W High St
Mailing · City
East Hampton
Mailing · Postal Code
06424-1024
Mailing · Region
CT
Mailing · Country
US

COGENCY GLOBAL INC.

Other reported details

Business ID
001t000000WnZKnAAN
Reported type
Business
Record timestamp
2026-10-18 00:30:26.8966667

Registered agent information

Agent account alei
US-CT.BER:0169652
Registered agent phone
8666213524
Registered agent email
statrep@cogencyglobal.com

Names and reported roles

Reported name
COGENCY GLOBAL INC.

Addresses and locations

Business address
29 W High St, East Hampton, CT, 06424-1024, United States
Business street address 1
29 W High St
Business city
East Hampton
Business state
CT
Business zip code
06424-1024
Business country
United States

Mailing information

Mailing address
29 W High St, East Hampton, CT, 06424-1024, United States
Mailing street address 1
29 W High St
Mailing city
East Hampton
Mailing zip code
06424-1024
Mailing state
CT
Mailing country
United States

Showing 1–1 of 1.

Principals (1)

Reported name and role

Roles are shown as reported. Agents, officers and principals are not automatically owners.

Principals and members

Parsed registry details

Parties

Reported · Name
Buckeye GP LLC

Addresses

Business · Street 1
4200 Westheimer Road, Suite 975
Business · City
Houston
Business · Region
TX
Business · Postal Code
77027
Business · Country
US

Buckeye GP LLC

Other reported details

Business ID
001t000000WnZKnAAN
Record timestamp
2026-10-18 00:40:17.6300000

Names and reported roles

Reported name
Buckeye GP LLC

Addresses and locations

Business street address 1
4200 Westheimer Road, Suite 975
Business city
HOUSTON
Business state
TX
Business zip code
77027
Business country
United States

Showing 1–1 of 1.

Filing history (20)

Parsed registry details

Filing

Name
BF-0013835650
Source Type
Annual Report
Type
Annual Report
Physical Filing
No

Dates

Filing
2026-01-22

BF-0013835650 · 2026-01-22

Other reported details

Business ID
001t000000WnZKnAAN
Filing date
2026-01-22T00:00:00.000
Reported type
Annual Report
Filing type
Annual Report
Physical filing
false
Record timestamp
2026-10-01T00:00:00.000

Names and reported roles

Name
BF-0013835650

Parsed registry details

Filing

Name
BF-0013520496
Source Type
Change of Agent
Type
Agent Change
Physical Filing
No

Dates

Filing
2025-08-04
Effective
2025-08-04

BF-0013520496 · 2025-08-04

Other reported details

Business ID
001t000000WnZKnAAN
Filing date
2025-08-04T00:00:00.000
Effective date
2025-08-04T00:00:00.000
Reported type
Change of Agent
Filing type
Agent Change
Physical filing
false
Record timestamp
2026-10-01T00:00:00.000

Names and reported roles

Name
BF-0013520496

Parsed registry details

Filing

Name
BF-0013006980
Source Type
Annual Report
Type
Annual Report
Physical Filing
No

Dates

Filing
2025-02-20

BF-0013006980 · 2025-02-20

Other reported details

Business ID
001t000000WnZKnAAN
Filing date
2025-02-20T00:00:00.000
Reported type
Annual Report
Filing type
Annual Report
Physical filing
false
Record timestamp
2026-10-01T00:00:00.000

Names and reported roles

Name
BF-0013006980

Parsed registry details

Filing

Name
BF-0012142898
Source Type
Annual Report
Type
Annual Report
Physical Filing
No

Dates

Filing
2024-02-24

BF-0012142898 · 2024-02-24

Other reported details

Business ID
001t000000WnZKnAAN
Filing date
2024-02-24T00:00:00.000
Reported type
Annual Report
Filing type
Annual Report
Physical filing
false
Record timestamp
2026-10-01T00:00:00.000

Names and reported roles

Name
BF-0012142898

Parsed registry details

Filing

Name
BF-0011186494
Source Type
Annual Report
Type
Annual Report
Physical Filing
No

Dates

Filing
2023-01-27

BF-0011186494 · 2023-01-27

Other reported details

Business ID
001t000000WnZKnAAN
Filing date
2023-01-27T00:00:00.000
Reported type
Annual Report
Filing type
Annual Report
Physical filing
false
Record timestamp
2026-10-01T00:00:00.000

Names and reported roles

Name
BF-0011186494

Parsed registry details

Filing

Name
BF-0010307955
Source Type
Annual Report
Type
Annual Report
Report Year
2022
Physical Filing
No

Dates

Filing
2022-02-16

BF-0010307955 · 2022-02-16

Other reported details

Business ID
001t000000WnZKnAAN
Filing date
2022-02-16T00:00:00.000
Reported type
Annual Report
Filing type
Annual Report
Report year
2022
Physical filing
false
Record timestamp
2026-10-01T00:00:00.000

Names and reported roles

Name
BF-0010307955

Parsed registry details

Filing

Name
BF-0010456073
Source Type
Mass Agent Change � Address
Type
Agent Address Change
Physical Filing
No

Dates

Filing
2022-01-14
Effective
2022-01-14

BF-0010456073 · 2022-01-14

Other reported details

Business ID
001t000000WnZKnAAN
Filing date
2022-01-14T00:00:00.000
Effective date
2022-01-14T00:00:00.000
Reported type
Mass Agent Change � Address
Filing type
Agent Address Change
Physical filing
false
Record timestamp
2026-10-01T00:00:00.000

Names and reported roles

Name
BF-0010456073

Parsed registry details

Filing

Name
0007148184
Source Type
Annual Report
Type
Annual Report
Report Year
2021
Volume
691
Volume Type
A
Page Count
3
Start Page
1824
Physical Filing
No

Dates

Filing
2021-02-12

0007148184 · 2021-02-12

Other reported details

Business ID
001t000000WnZKnAAN
Filing date
2021-02-12T00:00:00.000
Reported type
Annual Report
Filing type
Annual Report
Report year
2021
Volume
691
Volume type
A
Pages
3
Start page
1824
Physical filing
false
Record timestamp
2026-10-01T00:00:00.000

Names and reported roles

Name
0007148184

Parsed registry details

Filing

Name
0006943532
Source Type
Change of Agent Address
Type
Agent Address Change
Physical Filing
Yes

Dates

Filing
2020-07-06
Effective
2020-07-06

0006943532 · 2020-07-06

Other reported details

Business ID
001t000000WnZKnAAN
Filing date
2020-07-06T00:00:00.000
Effective date
2020-07-06T00:00:00.000
Reported type
Change of Agent Address
Filing type
Agent Address Change
Physical filing
true
Record timestamp
2026-10-01T00:00:00.000

Names and reported roles

Name
0006943532

Parsed registry details

Filing

Name
0006950703
Source Type
Change of Agent Address
Type
Agent Address Change
Physical Filing
Yes

Dates

Filing
2020-07-06
Effective
2020-07-06

0006950703 · 2020-07-06

Other reported details

Business ID
001t000000WnZKnAAN
Filing date
2020-07-06T00:00:00.000
Effective date
2020-07-06T00:00:00.000
Reported type
Change of Agent Address
Filing type
Agent Address Change
Physical filing
true
Record timestamp
2026-10-01T00:00:00.000

Names and reported roles

Name
0006950703

Parsed registry details

Filing

Name
0006844797
Source Type
Annual Report
Type
Annual Report
Report Year
2020
Volume
429
Volume Type
A
Page Count
3
Start Page
2231
Physical Filing
No

Dates

Filing
2020-03-23

0006844797 · 2020-03-23

Other reported details

Business ID
001t000000WnZKnAAN
Filing date
2020-03-23T00:00:00.000
Reported type
Annual Report
Filing type
Annual Report
Report year
2020
Volume
429
Volume type
A
Pages
3
Start page
2231
Physical filing
false
Record timestamp
2026-10-01T00:00:00.000

Names and reported roles

Name
0006844797

Parsed registry details

Filing

Name
0006452200
Source Type
Annual Report
Type
Annual Report
Report Year
2019
Volume
141
Volume Type
A
Page Count
2
Start Page
416
Physical Filing
No

Dates

Filing
2019-03-12

0006452200 · 2019-03-12

Other reported details

Business ID
001t000000WnZKnAAN
Filing date
2019-03-12T00:00:00.000
Reported type
Annual Report
Filing type
Annual Report
Report year
2019
Volume
141
Volume type
A
Pages
2
Start page
416
Physical filing
false
Record timestamp
2026-10-01T00:00:00.000

Names and reported roles

Name
0006452200

Parsed registry details

Filing

Name
0006109005
Source Type
Annual Report
Type
Annual Report
Report Year
2018
Volume
2497
Volume Type
B
Page Count
2
Start Page
2347
Physical Filing
No

Dates

Filing
2018-03-06

0006109005 · 2018-03-06

Other reported details

Business ID
001t000000WnZKnAAN
Filing date
2018-03-06T00:00:00.000
Reported type
Annual Report
Filing type
Annual Report
Report year
2018
Volume
2497
Volume type
B
Pages
2
Start page
2347
Physical filing
false
Record timestamp
2026-10-01T00:00:00.000

Names and reported roles

Name
0006109005

Parsed registry details

Filing

Name
0005786576
Source Type
Annual Report
Type
Annual Report
Report Year
2017
Volume
2318
Volume Type
B
Page Count
2
Start Page
230
Physical Filing
No

Dates

Filing
2017-03-08

0005786576 · 2017-03-08

Other reported details

Business ID
001t000000WnZKnAAN
Filing date
2017-03-08T00:00:00.000
Reported type
Annual Report
Filing type
Annual Report
Report year
2017
Volume
2318
Volume type
B
Pages
2
Start page
230
Physical filing
false
Record timestamp
2026-10-01T00:00:00.000

Names and reported roles

Name
0005786576

Parsed registry details

Filing

Name
0005513797
Source Type
Annual Report
Type
Annual Report
Report Year
2016
Volume
2166
Volume Type
B
Page Count
2
Start Page
637
Physical Filing
No

Dates

Filing
2016-03-15

0005513797 · 2016-03-15

Other reported details

Business ID
001t000000WnZKnAAN
Filing date
2016-03-15T00:00:00.000
Reported type
Annual Report
Filing type
Annual Report
Report year
2016
Volume
2166
Volume type
B
Pages
2
Start page
637
Physical filing
false
Record timestamp
2026-10-01T00:00:00.000

Names and reported roles

Name
0005513797

Parsed registry details

Filing

Name
0005285669
Source Type
Annual Report
Type
Annual Report
Report Year
2015
Volume
2039
Volume Type
B
Page Count
2
Start Page
1061
Physical Filing
No

Dates

Filing
2015-02-25

0005285669 · 2015-02-25

Other reported details

Business ID
001t000000WnZKnAAN
Filing date
2015-02-25T00:00:00.000
Reported type
Annual Report
Filing type
Annual Report
Report year
2015
Volume
2039
Volume type
B
Pages
2
Start page
1061
Physical filing
false
Record timestamp
2026-10-01T00:00:00.000

Names and reported roles

Name
0005285669

Parsed registry details

Filing

Name
0005035685
Source Type
Annual Report
Type
Annual Report
Report Year
2014
Volume
1899
Volume Type
B
Page Count
2
Start Page
996
Physical Filing
No

Dates

Filing
2014-02-03

0005035685 · 2014-02-03

Other reported details

Business ID
001t000000WnZKnAAN
Filing date
2014-02-03T00:00:00.000
Reported type
Annual Report
Filing type
Annual Report
Report year
2014
Volume
1899
Volume type
B
Pages
2
Start page
996
Physical filing
false
Record timestamp
2026-10-01T00:00:00.000

Names and reported roles

Name
0005035685

Parsed registry details

Filing

Name
0004804393
Source Type
Annual Report
Type
Annual Report
Report Year
2013
Volume
1769
Volume Type
B
Page Count
2
Start Page
1972
Physical Filing
No

Dates

Filing
2013-02-19

0004804393 · 2013-02-19

Other reported details

Business ID
001t000000WnZKnAAN
Filing date
2013-02-19T00:00:00.000
Reported type
Annual Report
Filing type
Annual Report
Report year
2013
Volume
1769
Volume type
B
Pages
2
Start page
1972
Physical filing
false
Record timestamp
2026-10-01T00:00:00.000

Names and reported roles

Name
0004804393

Parsed registry details

Filing

Name
0004549186
Source Type
Annual Report
Type
Annual Report
Report Year
2012
Volume
1622
Volume Type
B
Page Count
2
Start Page
1579
Physical Filing
No

Dates

Filing
2012-03-20

0004549186 · 2012-03-20

Other reported details

Business ID
001t000000WnZKnAAN
Filing date
2012-03-20T00:00:00.000
Reported type
Annual Report
Filing type
Annual Report
Report year
2012
Volume
1622
Volume type
B
Pages
2
Start page
1579
Physical filing
false
Record timestamp
2026-10-01T00:00:00.000

Names and reported roles

Name
0004549186

Parsed registry details

Filing

Name
0004334587
Source Type
Business Registration
Type
Certificate of Registration
Volume
1499
Volume Type
B
Page Count
2
Start Page
3648
Physical Filing
Yes

Dates

Filing
2011-03-10

0004334587 · 2011-03-10

Other reported details

Business ID
001t000000WnZKnAAN
Filing date
2011-03-10T00:00:00.000
Reported type
Business Registration
Filing type
Certificate of Registration
Volume
1499
Volume type
B
Pages
2
Start page
3648
Physical filing
true
Record timestamp
2026-10-01T00:00:00.000

Names and reported roles

Name
0004334587

Showing 1–20 of 20.

Correct or remove this record.

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COGENCY GLOBAL INC.

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A/Z CORPORATIONNorth Stonington, CT · ActiveNorth Stonington, CTCorporationApr 6, 1971Active
SCHOENECKERS, INC.Location not reported, CT · ActiveLocation not reported, CTCorporationJun 12, 1975Active
CHESTER REALTY INC.Clinton, CT · ActiveClinton, CTCorporationDec 17, 1969Active
NIELSEN AUDIO, INC.Location not reported, CT · ActiveLocation not reported, CTCorporationAug 20, 1968Active
CROSBY REALTY, LLCNew Haven, CT · ActiveNew Haven, CTLLCAug 3, 1962Active
THALLE CONSTRUCTION CO. INC.Location not reported, CT · ActiveLocation not reported, CTCorporationMay 1, 1970Active
YOUNG LIFE, INC.Location not reported, CT · ActiveLocation not reported, CTCorporationJan 5, 1976Active
SILVER HILL HOSPITAL, INC.New Canaan, CT · ActiveNew Canaan, CTCorporationOct 10, 1934Active
MITSUBISHI INTERNATIONAL CORPORATIONLocation not reported, CT · ActiveLocation not reported, CTCorporationApr 4, 1961Active
EVERFAST, INC.Location not reported, CT · ActiveLocation not reported, CTCorporationSep 10, 1971Active

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