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OCCF taps new president as it celebrates 35th anniversary, $1 billion milestone

The organization, with CEO Shelley Hoss at the helm, is celebrating 35 years of giving to local nonprofits.

Orange County Community Foundation has restructured its leadership as the nonprofit celebrates its 35th anniversary and a $1 billion milestone in grant giving. Seen here from left to right are Chief Executive Officer Shelley Hoss, Chief Financial Officer Tracy Branson, newly promoted President Tammy Tumbling and newly promoted Chief Operating Officer Cathleen Otero. (Photo courtesy of OCCF)
Orange County Community Foundation has restructured its leadership as the nonprofit celebrates its 35th anniversary and a $1 billion milestone in grant giving. Seen here from left to right are Chief Executive Officer Shelley Hoss, Chief Financial Officer Tracy Branson, newly promoted President Tammy Tumbling and newly promoted Chief Operating Officer Cathleen Otero. (Photo courtesy of OCCF)
Samantha Gowen


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Orange County Community Foundation in Irvine is restructuring its leadership as it celebrates two milestones: its 35th anniversary and surpassing $1 billion in community grant giving.

Tammy Tumbling, who joined OCCF as executive vice president and chief operating officer in 2019, has been promoted to president. Shelley Hoss, the nonprofit’s president and chief executive officer since 2000, remains its CEO.

Also see: Tammy Tumbling wants to help African American communities in OC

Cathleen Otero, the organization’s senior vice president of donor and community engagement, succeeds Tumbling as chief operating officer.

Tracy Branson, OCCF’s chief financial officer for more than 33 years, also remains in her role.

Last November, the nonprofit announced it had reached a historic milestone, with $1 billion in grants and scholarships awarded since it was created in 1989.

The Register asked the organization for details about the executive restructuring and what’s ahead. Here’s what OCCF said …

Q: What will distinguish the roles of the CEO and president? Are there distinct goals for each?

A: The separation of the president and CEO titles and roles provides the foundation with the ability to strategically focus on two critical areas: strategic external engagement for growth (Hoss) and operational excellence (Tumbling).

Hoss’ focus will be on the broader strategic leadership of the organization in partnership with the OCCF Board of Governors while working with its partners. As president, Tumbling is assuming responsibility for all daily operations.

Q: What specific issues or projects will the executive team undertake in 2024?

A: Having achieved our Vision 2024 goals to reach $500 million in assets and $1 billion in cumulative granting, our executive team is turning their attention to the future, building toward a new vision and five-year plan that will amplify our impact in Orange County and beyond in the years ahead.

A significant focus will be elevating OCCF’s donor and community engagement platform and providing leadership to the Foundation’s ongoing innovation and technology transformation.

Our new leadership model will ensure that OCCF serves local donors and nonprofits through strategic investments in systems, leadership, programs and resources such as our collaborative Giving Days, helping to create an Orange County where all have the opportunity to thrive.