Chief, Disclosure Unit

Catherine McMullen is the chief of the Disclosure Unit at the U.S. Office of Special Counsel, a position she has held since 1995. Ms. McMullen manages the whistleblower disclosure program at OSC, including the review of allegations received from federal employees, former federal employees, and applicants for federal employment, as well as the oversight of the Special Counsel's requests for investigation pursuant to 5 U.S.C. § 1213.

Ms. McMullen joined the Office of Special Counsel’s prosecution division in 1987. During her tenure in the prosecution division, she was detailed to the U.S. Attorney’s Office as a special assistant United States attorney for the District of Columbia. Prior to her OSC employment, she was employed in the litigation division at the U.S. Maritime Administration. She also served as an assistant attorney general for the State of West Virginia and an assistant prosecuting attorney for Brooke County, West Virginia. Ms. McMullen was also in private practice with Bell, McMullen, and Cross in Wellsburg, West Virginia.

Ms. McMullen received both her J.D. and B.A. in Political Science from West Virginia University. She is a member of the State Bar of West Virginia. ​


HENRY KERNERSpecial Counsel
ELLEN CHUBIN EPSTEINPrincipal Deputy Special Counsel
BRUCE FONGAssociate Special Counsel, Investigation and Prosecution
BRUCE GIPEChief Operating Officer
ANNE GULLICKChief, Dallas Field Office
PATRICK HARTOBEYDirector of Legislative Affairs
JANE JULIANOChief, Alternative Dispute Resolution Unit
KARL KAMMANNChief Financial Officer
ZACHARY KURZCommunications Director
LOUIS LOPEZAssociate Special Counsel, Investigation and Prosecution – Headquarters
KATHY MCDUFFIEChief Human Capital Officer
CATHERINE MCMULLENChief, Disclosure Unit
ELIZABETH MCMURRAYChief of Retaliation and Disclosure Unit
TRAVIS MILLSAPSDirector of Public Policy
SHIRINE MOAZEDChief, Diversity, Outreach & Training
DARSHAN SHETHChief, Investigation and Prosecution Division – Headquarters
JOSEPH SIEGELMANChief, San Francisco Bay Area Field Office
KIMBERLEY BAXTERChief, Investigation and Prosecution Division – Headquarters
CHRISTOPHER T. TALLChief, Detroit Field Office
MARTHA SHETHChief, Investigation and Prosecution Division – Headquarters
SUSAN K. ULLMANGeneral Counsel
EMILEE COLLIERChief, Investigation and Prosecution Division – Headquarters
RACHEL VENIERChief, Investigation and Prosecution Division – Headquarters
ANNE WAGNERAssociate Special Counsel
BARBARA WHEELERChief, Case Review Division