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VIDEO and PRESS RELEASE. From the San Mateo County Executive’s Office on May 22nd, 2025. Video and Agenda from the San Mateo County Board of Supervisor’s Special Meeting on Thursday, May 22nd, 2025 at 10:00am.
Redwood City – The San Mateo County Board of Supervisors has publicly released the findings of a comprehensive, impartial investigation conducted by an external law firm regarding allegations made by the Sheriff against County Executive Officer (CEO) Michael Callagy. The investigation by Oppenheimer Investigations Group determines that there was no misconduct by County Executive Callagy.
The report can be found here.
The investigation by Oppenheimer Investigations Group was commissioned by the County of San Mateo in response to allegations made by Sheriff Corpus in the fall and winter of 2024. The investigation was carried out independently, including with respect to the selection of witnesses, the content of interviews, and the development of findings.
Findings Clear County Executive
The investigation focused on the Sheriff’s claims that the CEO had engaged in a number of alleged improper acts, including inquiring into the Sheriff’s romantic relationships, negotiating overtime compensation for Sheriff’s personnel without first discussing with the Sheriff, blocking a Sheriff’s personnel termination, and treating the Sheriff differently because of her race, ethnicity, and/or gender. None of the claims were substantiated.
For example, although the Sheriff alleged that the CEO negotiated overtime compensation for Sheriff’s personnel “without having [the Sheriff] at the table” and that she “was never consulted before the final agreement,” the report highlights documentary evidence showing that the Sheriff was in fact copied on relevant correspondence and that “Callagy was deferential to Corpus” during negotiations.
Likewise, as to the allegation that the CEO treated the Sheriff differently because of her race, ethnicity, or gender, the report notes that that “Corpus made this assertion…based on broad, sweeping statements without providing a factual basis for the assertion.” The report further states that none of the witnesses interviewed observed the CEO treat Sheriff Corpus, themselves, or others poorly or in a discriminatory manner based on gender, race, or ethnicity.
The investigator found that, while the CEO did block the firing of a Sheriff’s Office employee, he did so because of his concerns about the County’s potential legal liability due to the risk that a retaliation claim could be brought by the employee and not, as the Sheriff alleged, because he wanted to take over the Sheriff’s Office.
Investigation Closed
The Board of Supervisors voted unanimously to release the report and that the complaint by the Sheriff has no merit. The Board now considers this matter closed.
Read Judge Cordell’s 400 page independent investigator’s report.
The Sheriff vs SMCo Executive Report can be found here.
More on the Sheriff Corpus Lawsuit and the Measure A Election on Coastside Buzz
San Mateo County Supervisors Accept Measure A Special Election Results and Discuss Next Steps for Consideration of Sheriff’s Removal; April 9, 2025
Semi-Official Results are 84%-Yes to 16%-No with 24% Turnout for Sheriff Corpus 2025 Measure A Special Election and Next Steps; March 13, 2025
San Mateo County Judge Denies Sheriff Corpus Lawsuit and Allows Measure A Special Election to Continue; Future Board of Supervisors’ Action May be Heard Separately; February 28, 2025
Sheriff Corpus Files Petitioner’s Brief Insisting the March 4th 2025 Measure A Vote During an Off-cycle Election will Violate her Due Process; February 13, 2025
San Mateo County Supervisors Approve $1.5M for Printing, Mailing and Communications for the March 2025 Special Election to Remove Sheriff Corpus; January 23, 2025
Sheriff Corpus Legal Team Seeks Emergency Relief from “Improperly Calendared” March 2025 Election Rather than a Statewide General Election; January 14, 2025
Statement from the County of San Mateo Regarding Sheriff Corpus’s $10 Million Government Claim & Release of Full Report Transcript which Cost $200k; January 9, 2025
San Mateo County Independent Civilian Advisory Commission on the Sheriff’s Office Holds Special Meeting to Review Judge Cordell’s Report on Sheriff Christina Corpus; November 28, 2024
San Mateo County Supervisors Demand Sheriff’s Immediate Resignation, Terminate Executive Director of Administration Position; November 14, 2024
San Mateo County Supervisors to Consider Seeking Sheriff’s Immediate Resignation over Findings from Independent Investigation; November 13, 2024
San Mateo County Supervisors Approve the First Appointments to Independent Civilian Advisory Commission on the Sheriff’s Office; June 12, 2024
With 250 Unique Sheriff Oversight Models Nationwide, Supervisors Explore Oversight that will Work for San Mateo County; November 2, 2023
More on Sheriff Corpus in Coastside Buzz

