Post & Schell, P.C.

Celestine Montague

Principal
Insurance Law

Philadelphia, PA

Phone: 215-587-1005
Fax: 215-587-1444
cmontague@postschell.com

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Bio

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Celestine Montague is a Principal in the firm's Insurance Law Department. She counsels and defends regional and large, multi-line insurance carriers in first- and third-party insurance coverage and bad faith matters. This includes crime; cyber, media, and technology; directors and officers (D&O), financial lines, and errors and omissions (E&O); professional liability; and commercial general liability. She has served as Coordinating Counsel for a national multi-line insurer, and provides guidance on preventing, handling, and defending extra-contractual claims in jurisdictions throughout the United States.

Ms. Montague has a broad range of experience in emerging issues in complex insurance coverage litigation, including claims involving sexual abuse and environmental liability. She manages complex, multimillion-dollar cases through all stages of litigation, from pre-trial strategy through post-trial relief. She represents insurance companies in state and federal courts nationwide, as well as in various alternative dispute resolution forums, including private arbitrations and mediations.

In addition, Ms. Montague represents commercial liability insurers in claims for insurance coverage and addresses defense and settlement issues associated with the underlying disputes, including those involving contracts, investments, intellectual property, labor and employment, professional errors and omissions, and personal injury.

A frequent speaker and writer on the issues and challenges facing the insurance industry, Ms. Montague has presented and written on topics such as environmental, social, and corporate governance (ESG) liability and its impact on D&O coverage, primary and excess insurers’ duties and exposure to bad faith claims, and defense and settlement issues associated with underlying disputes involving sexual abuse, environmental liability, and financial lines risks.  

The Best Lawyers in America©, a national peer-review publication, selected Ms. Montague for inclusion in its 2025 edition in the category of Insurance Law. For information about this selection and an overview of common third-party publications, rankings, and list methodologies, click here.

Read full bio > Read less >

Practices

  • Insurance Law
  • Bad Faith and Extra-Contractual Litigation
  • Complex Insurance Coverage Advice and Litigation
  • Construction Defect/Injury Insurance Coverage
  • Insurance Fraud and Arson
  • Reinsurance

Industries

  • Insurance

Education

  • J.D., Temple University James E. Beasley School of Law, 1994
    Moot Court Honor Society, Chair and Editor; Best Brief Award, Widener Corporate Law Competition; Finest Advocate-City Solicitors Intern Program, Distinguished Performance in Trial Advocacy
  • M.A., University of Pennsylvania, 1992
    Sweeney Scholar; Teaching Assistant, Finance
  • B.A., Summa Cum Laude, Dickinson College, 1990
    Phi Beta Kappa; Omicron Delta Kappa; Omicron Delta Epsilo; Class of 1875 Prize, Excellence in Economics.

Bar Memberships

  • Pennsylvania
  • New Jersey

Court Admissions

  • U.S. Court of Appeals, Third Circuit
  • U.S. District Court for the Eastern District of Pennsylvania
  • U.S. District Court for the District of New Jersey

Representative Matters

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  • Negotiated coverage disputes among multiple carriers, policyholders, brokers, and claimants, involving various issues, including indemnification provisions, additional insured agreements, and competing other insurance provisions.
  • Represented carriers in litigation involving claims-made and reported issues, underwriting history, the formation and reformation of contracts, changes in coverage positions, asset purchase agreements, reinsurance agreements, claims servicing agreements, professional services exclusions, interrelated wrongful acts provisions and prior act exclusions, Insured status, and bump-up provisions.
  • Represented insurers at the coverage review stage vis-à-vis the potential for coverage under multiple coverage part policies, providing coverage opinions, recommendations, and coverage position letters.
  • Reviewed the potential for coverage under policies issued to individuals, businesses, housing associations, religious and cultural organizations, tribal entities, governmental units, and political subdivisions.
  • Advised and represented clients on the duty to defend and independent counsel; an insurer’s duty to advance; an insurer’s right to reimbursement; the allocation of defense costs among insurers and policyholders; the effect of exhaustion provisions, deductibles, and self-insured retentions; an insurer’s rights and obligations to intervene in underlying actions to interject special verdict forms and/or special interrogatories; and the need to consider bonding/surety issues.
  • Advised clients regarding various statutes and regulations, including state claims-handling statutes, the False Claims Act, the Computer Fraud and Abuse Act, the Employment Retirement and Income Security Act (ERISA), the Federal Tort Claims Act, the Fair Labor Standards Act, the Indian Self-Determination and Education Assistance Act, Pennsylvania Wage Payment and Collections Law, and the Whistleblower Protection Act.

News & Insights

News

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Fifty-one Attorneys Recognized as 2025 Best Lawyers in America by The Best Lawyers in America©. 

Anthony L. Miscioscia and Celestine Montague Join Post & Schell as Principals in the Firm's Insurance Law Department

Speaking Engagements

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Insurance Law Principals Present CLE Webinar on First and Third-Party Bad Faith Claims for Strafford on Dec. 14

Bio Representative Matters

Celestine Montague is a Principal in the firm's Insurance Law Department. She counsels and defends regional and large, multi-line insurance carriers in first- and third-party insurance coverage and bad faith matters. This includes crime; cyber, media, and technology; directors and officers (D&O), financial lines, and errors and omissions (E&O); professional liability; and commercial general liability. She has served as Coordinating Counsel for a national multi-line insurer, and provides guidance on preventing, handling, and defending extra-contractual claims in jurisdictions throughout the United States.

Ms. Montague has a broad range of experience in emerging issues in complex insurance coverage litigation, including claims involving sexual abuse and environmental liability. She manages complex, multimillion-dollar cases through all stages of litigation, from pre-trial strategy through post-trial relief. She represents insurance companies in state and federal courts nationwide, as well as in various alternative dispute resolution forums, including private arbitrations and mediations.

In addition, Ms. Montague represents commercial liability insurers in claims for insurance coverage and addresses defense and settlement issues associated with the underlying disputes, including those involving contracts, investments, intellectual property, labor and employment, professional errors and omissions, and personal injury.

A frequent speaker and writer on the issues and challenges facing the insurance industry, Ms. Montague has presented and written on topics such as environmental, social, and corporate governance (ESG) liability and its impact on D&O coverage, primary and excess insurers’ duties and exposure to bad faith claims, and defense and settlement issues associated with underlying disputes involving sexual abuse, environmental liability, and financial lines risks.  

The Best Lawyers in America©, a national peer-review publication, selected Ms. Montague for inclusion in its 2025 edition in the category of Insurance Law. For information about this selection and an overview of common third-party publications, rankings, and list methodologies, click here.

Read full bio > Read less >

  • Negotiated coverage disputes among multiple carriers, policyholders, brokers, and claimants, involving various issues, including indemnification provisions, additional insured agreements, and competing other insurance provisions.
  • Represented carriers in litigation involving claims-made and reported issues, underwriting history, the formation and reformation of contracts, changes in coverage positions, asset purchase agreements, reinsurance agreements, claims servicing agreements, professional services exclusions, interrelated wrongful acts provisions and prior act exclusions, Insured status, and bump-up provisions.
  • Represented insurers at the coverage review stage vis-à-vis the potential for coverage under multiple coverage part policies, providing coverage opinions, recommendations, and coverage position letters.
  • Reviewed the potential for coverage under policies issued to individuals, businesses, housing associations, religious and cultural organizations, tribal entities, governmental units, and political subdivisions.
  • Advised and represented clients on the duty to defend and independent counsel; an insurer’s duty to advance; an insurer’s right to reimbursement; the allocation of defense costs among insurers and policyholders; the effect of exhaustion provisions, deductibles, and self-insured retentions; an insurer’s rights and obligations to intervene in underlying actions to interject special verdict forms and/or special interrogatories; and the need to consider bonding/surety issues.
  • Advised clients regarding various statutes and regulations, including state claims-handling statutes, the False Claims Act, the Computer Fraud and Abuse Act, the Employment Retirement and Income Security Act (ERISA), the Federal Tort Claims Act, the Fair Labor Standards Act, the Indian Self-Determination and Education Assistance Act, Pennsylvania Wage Payment and Collections Law, and the Whistleblower Protection Act.

Practices

  • Insurance Law
  • Bad Faith and Extra-Contractual Litigation
  • Complex Insurance Coverage Advice and Litigation
  • Construction Defect/Injury Insurance Coverage
  • Insurance Fraud and Arson
  • Reinsurance

Industries

  • Insurance

Education

  • J.D., Temple University James E. Beasley School of Law, 1994
    Moot Court Honor Society, Chair and Editor; Best Brief Award, Widener Corporate Law Competition; Finest Advocate-City Solicitors Intern Program, Distinguished Performance in Trial Advocacy
  • M.A., University of Pennsylvania, 1992
    Sweeney Scholar; Teaching Assistant, Finance
  • B.A., Summa Cum Laude, Dickinson College, 1990
    Phi Beta Kappa; Omicron Delta Kappa; Omicron Delta Epsilo; Class of 1875 Prize, Excellence in Economics.

Bar Memberships

  • Pennsylvania
  • New Jersey

Court Admissions

  • U.S. Court of Appeals, Third Circuit
  • U.S. District Court for the Eastern District of Pennsylvania
  • U.S. District Court for the District of New Jersey

News & Insights

News Speaking Engagements

Fifty-one Attorneys Recognized as 2025 Best Lawyers in America by The Best Lawyers in America©. 

Anthony L. Miscioscia and Celestine Montague Join Post & Schell as Principals in the Firm's Insurance Law Department

Insurance Law Principals Present CLE Webinar on First and Third-Party Bad Faith Claims for Strafford on Dec. 14

 

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