Vincenzini

NOT FOR PUBLICATION FILED

UNITED STATES COURT OF APPEALS MAR 17 2026

MOLLY C. DWYER, CLERK

U.S. COURT OF APPEALS

FOR THE NINTH CIRCUIT

DENNIS VINCENZINI, an individual, No. 24-7359 D.C. No. Plaintiff - Appellant, 4:23-cv-00645-JSW v. MEMORANDUM*

TRANSITAMERICA SERVICES, INC.,

Defendant - Appellee.

Appeal from the United States District Court for the Northern District of California Jeffrey S. White, District Judge, Presiding

Argued and Submitted February 10, 2026 San Francisco, California

Before: GOULD, FRIEDLAND, and MILLER, Circuit Judges.

Appellant Dennis Vincenzini (“Vincenzini”) appeals the district court’s

order granting Appellee TransitAmerica Services, Inc.’s (“TASI”) motion for

summary judgment on claims arising from Vincenzini’s termination from

employment as a locomotive engineer. Vincenzini contends that his termination

* This disposition is not appropriate for publication and is not precedent except as provided by Ninth Circuit Rule 36-3. was retaliation for his whistleblowing activities while serving as his union’s…