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  • The Sacramento County Deputy Sheriffs' Association has utilized the services of Mastagni Holstedt, A Professional Corporation for over 30 years. During my tenure as Association President there has not been one situation that the firm could not handle... Read more >

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Mastagni Holstedt, A Professional Corporation
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Northern California Location
1912 I Street
Sacramento, CA 95811
916-446-4692 Phone
916-447-4614 Fax
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Southern California Location
3400 Inland Empire Blvd, #101
Ontario, CA 91764
877-212-6907 Phone
Other Locations in Whittier, Chico, Stockton and San Jose

Phillip R.A. Mastagni

(916) 491-4278 | | VCard

Phillip Mastagni is a partner in the Civil Litigation department of Mastagni Holstedt, A Professional Corporation He specializes in Civil Litigation, including trial and appellate litigation in California and federal courts. Phillip is an experienced litigator as well as a PORAC Legal Defense Fund panel attorney and is admitted in U.S. District Court, Southern, Eastern, Northern and Central Districts of California, the Ninth Circuit Court of Appeals.

Phillip has handled complex civil litigation, including breach of contract, business tort, fraud, breach of fiduciary duty, unfair business practice, Labor-Management Reporting and Disclosure Act 29 U.S.C. 501 violation, aviation, products liability, tort, catastrophic injury, employment, and wrongful termination litigation. Phillip has handled litigation from inception through trial and jury verdict. Phillip is also well versed in international civil litigation, having focused his studies at the Georgetown University Law Center in International and European Union Law.

Phillip has been involved in several international litigation matters, including aviation litigation requiring several months of international civil discovery within the European Union. In addition to litigation matters, Phillip consults with and frequently lectures to corporate clients and labor organizations.



  • German (fluent)