Board Members

  • Carina E. Coleman

    Carina E. Coleman

    Interim Board President - Mayoral Appointee

    Carina Coleman is an accomplished investment management professional with Sempra Energy and has experience managing both tax exempt and tax sensitive assets, including qualified and non-qualified retirement plan assets. She has expertise in constructing portfolios to meet return and risk objectives, conducting investment manager due diligence, negotiating investment management agreements, and analyzing risk and performance. Ms. Coleman was previously a corporate treasury manager with The Walt Disney Company.  

    Term Date: March 31, 2023

  • Bret A. Bartolotta

    Bret A. Bartolotta

    Active General Trustee

    Bret Bartolotta is a Lead Deputy City Attorney in the Public Finance Section of the San Diego City Attorney’s Office, focusing on the City’s various financings (e.g., direct State and Federal loans, municipal bond issuances, etc.). Bret also serves as the DCA for Finance and Disclosure on the Disclosure Practices Working Group, a sub-group composed of City Officers and Department Directors that reviews material disclosures made by the City in Official Statements to bond issuances, the City’s Comprehensive Annual Financial Reports, and budget documents for compliance with securities laws. Prior to joining the City Attorney’s Office, Bret was in private practice for over 10 years, working in the areas of private equity, mergers and acquisitions, and general business law. Additionally, Bret has been a member of the San Diego Nice Guys since 2009, a philanthropic group focused on helping local families and individuals who, through no fault of their own, have fallen on tough times.

    Term Date: March 31, 2025

  • Natasha Collura

    Natasha Collura

    Mayoral Designee

    Ms. Collura currently serves as the Executive Director of Special Events and Filming for the City of San Diego and oversees a portfolio of services that support the City’s special event, filming, business and tourism industries in order to generate hundreds of millions of dollars in economic impact and extensive worldwide exposure for the San Diego region. Ms. Collura previously served as the City’s Executive Director of Corporate Partnerships. During her tenure in that position from March 2011 through 2018, she negotiated and implemented several new multi-year partnerships that generated millions of dollars in additional revenue for the City.

    Ms. Collura also served as the Director of Revenue Generation and Partnerships for the San Diego County Regional Airport Authority from 2018-2019, where she was responsible for revenue generation contracts and programs representing approximately $165,000,000 in revenue. Prior to her career in public service, she worked in the private sector for over 15 years in various sectors of Marketing for the Zoological Society of San Diego and Busch Entertainment Corporation. 

    Term Date: No end date

  • Charles F. Hogquist

    Charles F. Hogquist

    Retired Trustee

    Charles "Charlie" Hogquist was sworn in as a San Diego Police Officer in 1978. He retired as a Lieutenant in 2006 to take a position with the San Diego Community College Police Department. He served as the SDCCDPD Police Chief until his subsequent retirement in 2013. Presently he works as a tour conductor for the Old Town Trolley and enjoys showing off San Diego to visitors and locals. Charlie holds a Bachelor of Arts degree in Accounting from Queens College of City University of New York and is a 1981 graduate of the University of San Diego School of Law. 

    Term Date: March 31, 2023

  • Paul Kaufmann

    Paul Kaufmann

    Mayoral Appointee

    Mr. Kaufmann has been on SDCERS’ Audit Committee since October 2017. He is also a Community Advisory Board Member at Sanford Burnham Prebys, a non-profit medical research institution that is dedicated to finding cures for human diseases. In his free time, Mr. Kaufmann works as an Adjunct Professor at Brandman University’s Business School in Irvine, CA.

    Term Date: March 31, 2023

  • Paul Lotze

    Paul Lotze

    Active Fire Safety Trustee

    Paul Lotze, is a Fire Engineer with San Diego Fire-Rescue Dept. He is part of the Post Academy Training ("PAT"). As a PAT Engineer, Paul has the opportunity to drill, train, and mentor probationary firefighters. During his time at PAT, he noticed the need for new hires to have an understanding of retirement readiness, because, at the time, they no longer had guaranteed income through a pension or social security. In order to fill this void and help support his fellow firefighters, Paul co-created the first retirement presentation for new hires. His passion to serve in the area of retirement readiness overflowed to his entire fire family and this helped catalyze the first retirement account chart. Paul’s continued desire to serve the financial prosperity of all firefighters has led him to the position of Active Fire Safety Trustee on the SDCERS Board. Paul’s prior knowledge and application of financial awareness, as well as his willingness to serve, will now benefit his peers and their families for years to come.
     

    Term Date: March 31, 2025

  • Louis J. Maggi

    Louis J. Maggi

    Active Police Safety Trustee

    Louis J. Maggi has been a San Diego Police Officer for 20 years, and is a currently a Detective Sergeant assigned to the Homicide Unit. He worked in Western Division as a patrol officer for seven years before being promoted to Detective. As a Detective, Mr. Maggi spent four years in the Financial Crimes Unit and five years in the Homicide Unit. As a Sergeant, he worked in Southeastern Patrol before being assigned back to the Homicide Unit. Mr. Maggi previously served as the San Diego Police Officers Association representative to the San Diego City Employees Retiree Medical Trust, and gained training and experience working with employee benefit plans. Mr. Maggi holds an Associate of Science degree in Administration of Justice and has attended hundreds of additional hours of specialized investigative training. He is also a Police Officer Standards and Training (POST) Certified instructor and currently instructs in the POST Officer Involved Shooting Investigation course.

    Term Date: March 31, 2023

  • Sarah Mayen

    Sarah Mayen

    Active General Trustee

    Sarah Mayen is an Assistant Director in the City of San Diego’s Department of Finance and has worked at the City of San Diego for over 20 years. She currently oversees the Internal Financial Reporting Division, which produces the City’s Quarterly Budget Monitoring Reports and provides accounting and budgetary support to City departments. Additionally, this group supports labor negotiations and processes City payroll for over 11,000 employees. She graduated from San Diego State University with a bachelor’s degree in Business Administration, with an emphasis in Accounting, and is a Certified Public Accountant.

    Term Date: March 31, 2025

  • Clifford Schireson

    Clifford Schireson

    Mayoral Appointee

    Cliff Schireson comes to us with substantial experience in investment banking and management, as he was the Director and co-head of Fixed Income at Brandes Investment Partners. Mr. Schireson has also served as Board Chair for the La Jolla Music Society, was on the Board of Directors of the San Diego Human Dignity Foundation, and is currently on the San Diego Foundation’s Board of Governors.

    Term Date: March 31, 2023

  • Roberta Spoon

    Roberta Spoon

    Mayoral Appointee

    Roberta Spoon is a licensed CPA and founding partner at the forensic accounting firm of Brodshatzer, Wallace, Spoon & Yip, CPAs. Roberta's experience in volunteerism includes two terms as Board Vice Chair for the San Diego Housing Commission, where she worked closely with the Finance Department, served as their Audit Committee Chair, and served on the Strategic Planning Committee. Currently she also volunteers for the Lawrence Family Jewish Community Center as Audit Committee Chair and Housing Development Partners, serving as an Audit Committee Chair and as Board Treasurer. Roberta earned a Bachelor’s Degree in Accounting and a Master’s Degree in Business Administration, Finance from San Diego State University.

    Term Date: March 31, 2021