Lobbyist Detail View

MR. THOMAS COULTER MCMAHEN




Address:

 660 LAUREL ST., SUITE E
BATON ROUGE, Louisiana 70802
Phone:
 225-769-5500
Fax:
   
Current Registration: 2025: Legislative and Executive
   
Employer:

 Louisiana Automobile Dealers Association
660 Laurel St., Suite E
Baton Rouge, Louisiana 70802

View Expenditure Reports

View Registration Reports

Expenditure Reports

Select the Calendar Year to View: 
       
Report PeriodDate FiledTotal Leg. Exp.Total Exec. Exp.Total Local Exp.
October 202511/4/2025$0.00$0.00 
September 202510/20/2025$0.00$0.00 
August 20259/19/2025$83.12$0.00 
July 20258/11/2025$0.00$0.00 
June 20257/11/2025$0.00$0.00 
May 20256/11/2025$643.16$0.00 
April 20255/19/2025$3,391.18$0.00 
March 20254/15/2025$224.86$0.00 
February 20253/11/2025$0.00$0.00 
January 20252/11/2025$0.00$0.00 
 Report PeriodBranchDetailsAmount
March 2025 Total Amount: $224.86
April 2025 Total Amount: $3,391.18
May 2025 Total Amount: $643.16
August 2025 Total Amount: $83.12
 Report PeriodBranchSubject Matters
January 2025
February 2025
March 2025
April 2025
May 2025
June 2025
July 2025
August 2025
September 2025
October 2025



Registration Forms
Registration YearLobbying BranchDate Registration BeganDate Registration EndedOriginal RegistrationCurrent Registration
Includes info from
supplemental registrations, if any.
2025 Executive 1/1/2025 current Original Registration Current Registration
2025 Legislative 1/1/2025 current Original Registration Current Registration
2024 Executive 1/1/2024 12/31/2024 Original Registration Current Registration
2024 Legislative 1/1/2024 12/31/2024 Original Registration Current Registration
2023 Executive 1/1/2023 12/31/2023 Original Registration Current Registration
2023 Legislative 1/1/2023 12/31/2023 Original Registration Current Registration
2022 Legislative 6/21/2022 12/31/2022 Original Registration Current Registration

Company Representations
 
Companies Currently Represented

Representative NamePaidCat. PayBranchDates Registered
Louisiana Automobile Dealers Association Yes$24,999 or less Legislative and Executive 12/11/2023  - current
Companies Formerly Represented

Representative NamePaidCat. PayBranchDates Registered
Taylor, Porter, Brooks & Phillips LLP No$24,999 or less Legislative and Executive 6/21/2022  - 12/8/2023
Taylor, Porter, Brooks & Phillips, LLP No$24,999 or less Legislative and Executive 6/21/2022  - 12/8/2023
All Companies Represented

Representative NamePaidCat. PayBranchDates Registered
Louisiana Automobile Dealers Association Yes$24,999 or less Legislative and Executive 12/11/2023  - current
Taylor, Porter, Brooks & Phillips LLP No$24,999 or less Legislative and Executive 6/21/2022  - 12/8/2023
Taylor, Porter, Brooks & Phillips, LLP No$24,999 or less Legislative and Executive 6/21/2022  - 12/8/2023

Business Relationships

NameIndustry RelationshipSubDate
N/An/a1/10/2022 11:31:15 AM

Foreign Adversary & Corporation Lobbying Disclosures

La R.S. 24:53.1 requires that before engaging in lobbying activity in Louisiana on behalf of a foreign adversary as defined in La R.S. 24:51(9), any person who participates in such lobbying shall file a disclosure with the Louisiana Board of Ethics. (Effective Dec. 1, 2025)

La R.S. 24:53.2 requires that any person who lobbies on behalf of a foreign corporation or any entity whose headquarters or principal place of business is located in a nation or country identified in 15 CFR Part 791.4, as revised from time to time, shall file a disclosure with the Louisiana Board of Ethics. (Effective Dec. 1, 2025)

MR. THOMAS COULTER MCMAHEN has not filed any disclosures of lobbying on behalf of a foreign adversary or corporation.
 

 
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Available Lobbying Charts
Registered Lobbyists by Year and Branch : Shows the total number of individuals registered to lobby in Louisiana.
Reported Lobbying Expenditures by Month and Branch Lobbied : Shows the total amount of lobbying expenditures reported by registered Louisiana lobbyists. The chart shows totals by month for a calendar year and gives the option of which year and branch(es) to display.
Reported Subject Matters Lobbied by Month and Branch : Shows the total number of registered lobbyists reporting to have lobbied about a particular subject matter in a given month. The chart gives options to select the month and branch to display.