Firm Profile

Welborn Sullivan Meck & Tooley, P.C.

USA Guide 2025

Ranked departments
Ranked lawyers
USA

Welborn Sullivan Meck & Tooley, P.C.

Welborn Sullivan Meck & Tooley, P.C.

Contact number

+1 303 830 2500

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About

Provided by Welborn Sullivan Meck & Tooley, P.C.
USA
Firm Details

Managing Partner: Amy Seneshen

Number of Equity Partners: 17

Number of Other Fee Earners: 19

Offices

Denver Office:

Welborn Sullivan Meck & Tooley, P.C.

1401 Lawrence St., Suite 1800

Denver, Colorado 80202 USA

(303) 830-2500

www.wsmtlaw.com

Email: [email protected]

Casper Office:

Welborn Sullivan Meck & Tooley,P.C.

159 N. Wolcott Street, Suite 220

Casper, Wyoming 82601 USA

Phone: (307) 234-6907

www.wsmtlaw.com

Email: [email protected]

Firm Overview

Welborn Sullivan Meck & Tooley, P.C. focuses on natural resources law, business & transactions, and litigation. The firm has extensive experience in all facets of energy development in the oil & gas, mining, and renewables industries. Our environmental team has substantial expertise in public lands issues, air and water quality, waste disposal, NEPA compliance, rulemaking, and permitting. Clients range from multi-billion dollar private equity firms to start-ups. Our team brings diverse real-world experience to deliver practical, client-focused legal solutions. Led by a female managing partner, Welborn fosters a collaborative culture that supports thought leadership and active involvement in professional organizations. Welborn is the exclusive Colorado member firm for GGI, a global network of independent professional services firms.

Main Areas of Practice

Natural Resources

Welborn's natural resources practice spans clients across the oil & gas, mining, water, and renewables industries. The firm provides clients with in-depth experience and timely and reliable results in all aspects of energy and mineral development - from environmental & regulatory compliance, mineral title, acquisitions & divestitures, tax, and permitting to litigation. Welborn’s attorneys bring deep experience from high-level roles in federal and state government, including the U.S. Departments of the Interior and Energy, EPA, and governor’s offices. Specific expertise includes:

    • Oil & gas and helium: leasing, permitting, development, regulatory and state oil and gas conservation commission work
    • Mining: locatable (gold, silver, lithium, in-situ uranium) and leasable minerals (trona, sodium)
    • Federal lands: rights-of-way for renewables and transmission, development of oil and gas, helium and minerals
    • Renewables: state and federal permitting of wind, solar and negotiating geothermal, solar, and wind leases
    • Mineral title examination: preparation of title opinions, due diligence, and litigation assistance
    • Water law: title, acquisition, development and conveyance of water rights
    • Environmental regulatory practice: state and federal compliance with air, water quality and waste (CERCLA and RCRA) regulations
    • Natural resources litigation: complex commercial disputes, mineral royalty litigation, litigation regarding federal permit decisions, eminent domain, condemnation, and environmental regulatory claims

Business &Transactions

Welborn's business & transactions team advises clients in a wide range of transactions, from working with entrepreneurs in connection with start-ups to billion dollar acquisitions for domestic and international clients. The firm works with public and private companies in a variety of industries on all aspects of their business, as well as providing private client services to management teams and family offices. Welborn's expertise includes:

    • Acquisitions & divestitures: Welborn negotiates and drafts purchase and sale agreements, merger agreements, and joint venture agreements, and assists clients in all aspects of the due diligence process. Welborn handles both asset and equity transactions of all sizes in many industries, including the energy, outdoor clothing, automotive, food, software, aviation, manufacturing, recreation, museum, retail, insurance, restaurant, medical service and professional service industries.
    • Corporate and Tax Law: Welborn represents clients from start-ups to mature companies, handling a wide variety of corporate issues related to structuring, forming, and financing business entities, including a broad spectrum of tax-related issues. The firm advises clients in defining the rights of business owners and planning and executing exit strategies. The team's experience includes serving as general counsel; financing arrangements involving commercial banks, private equity and venture capital; due diligence; mergers and acquisitions; and conversions.
    • Real Estate: Welborn attorneys have extensive experience working with clients on real estate transactions, property development, land use, and zoning matters. This experience is enhanced by a team that is experienced in government negotiations and procedures. Welborn represents both buyers and sellers in commercial real estate transactions, from small commercial leases to multi-state ranch property purchases, and large-scale property acquisition, development, and disposition. The firm assists real estate developers and owners in a wide range of financing alternatives, 1031 like-kind exchanges, development agreements, construction contracts, and the structuring of various partnerships, joint ventures, corporations, and limited liability companies.

Litigation

Welborn's litigation group optimizes clients' interest in avoiding and resolving disputes by bringing a blend of pragmatism and preeminent trial skills and experience. The firm specializes in:

    • Trial: Welborn’s litigation team brings a wealth of experience to trials, pre-trial motions and discovery practice, and settlement discussions before trial or initiation of a formal lawsuit. With courtroom experience becoming rarer among attorneys, Welborn has an effective, active trial practice. With extensive trial experience representing clients of all sizes in jury, bench, and administrative trials, Welborn attorneys have gained knowledge and expertise that benefits clients at every stage of litigation. Whether it is early case assessments and pre-trial negotiations or counseling and structuring settlements, the firm's litigation expertise gives clients an advantage that often helps them avoid future litigation.
    • Complex Commercial Litigation and Appeals: Welborn attorneys have broad experience in commercial litigation matters, including highly-complex, bet-the-company commercial disputes. The firm has particular expertise in natural resources litigation. Welborn has extensive experience handling appeals from jury verdicts, trial court decisions, and administrative rulings involving both state and federal courts and agencies. Welborn has brought and defended appeals before the Colorado, Wyoming, and Montana Supreme Courts as well as the Claims Court, D.C. Circuit Court, and the Ninth and Tenth Circuit Courts of Appeal.
    • Mediation & Arbitration: From contractually-mandated binding arbitration to voluntary pre-dispute mediation, Welborn is well-versed in applying the various rules of different forums to benefit clients. Although firm attorneys always consider the possibility of trial or binding arbitration, they also recognize and account for the practical costs of litigation on companies and individuals, and advise on the possible alternatives for early dispute resolution. Welborn attorneys have served as mediators and arbitrators for a variety of matters, including those relating to oil & gas, mining, and water rights.

Ranked Offices

Provided by Welborn Sullivan Meck & Tooley, P.C.

USA - Head office
USA
  • Casper
    159 North Wolcott, Suite 220, Casper, Wyoming, USA, WY 82601

Welborn Sullivan Meck & Tooley, P.C. rankings

USA Guide 2025
Filter by
Band
Colorado
Energy & Natural Resources
1 Department
3 Ranked Lawyers
Department
Energy & Natural Resources
2
Energy & Natural Resources
2
Band 2
Lawyers
Amy Seneshen
2
Amy Seneshen
2
Band 2
Keith Tooley
2
Keith Tooley
2
Band 2
Allison MacKinnon
U
Allison MacKinnon
U
Up and Coming
Environment
1 Department
2 Ranked Lawyers
Department
Environment
3
Environment
3
Band 3
Lawyers
James W Sanderson
2
James W Sanderson
2
Band 2
Julie Rosen
2
Julie Rosen
2
Band 2
Wyoming
Corporate/M&A
1 Department
2 Ranked Lawyers
Department
Corporate/M&A
1
Corporate/M&A
1
Band 1
Lawyers
Jennifer L. McDowell
1
Jennifer L. McDowell
1
Band 1
Kenneth Barbe
1
Kenneth Barbe
1
Band 1
Litigation: General Commercial
1 Ranked Lawyer
Lawyers
John Masterson
2
John Masterson
2
Band 2
Real Estate
1 Department
1 Ranked Lawyer
Department
Real Estate
2
Real Estate
2
Band 2
Lawyers
Kenneth Barbe
1
Kenneth Barbe
1
Band 1