Fractional COO
Provides senior operational leadership to strengthen workflows, systems, team accountability, and organizational performance for nonprofits navigating growth, complexity, or leadership strain.
Build stronger nonprofit leadership with flexible executive support designed to improve decision-making, accountability, and organizational stability. One Abacus Advisory helps mission-driven teams strengthen operations, finance, governance, and people leadership so executives and boards can lead with greater clarity, confidence, and long-term resilience.

Executive-level nonprofit support spanning operations, finance, governance, HR, and organizational transition needs.
Provides senior operational leadership to strengthen workflows, systems, team accountability, and organizational performance for nonprofits navigating growth, complexity, or leadership strain.
Delivers executive financial leadership, board-ready reporting, compliance oversight, and strategic planning support to help nonprofit leaders make informed, mission-aligned decisions.
Offers part-time executive HR leadership focused on compliance, organizational development, and people operations to help nonprofits build healthy, mission-aligned teams.
Partners with executive directors and boards to improve governance, strategic planning, and reporting clarity so leadership teams can act with confidence.
Establishes effective operating rhythms, management practices, and internal systems that improve accountability, clarity, and day-to-day execution across the organization.
Maintains continuity during staff departures, executive transitions, and organizational change by stabilizing leadership functions and keeping critical operations on track.
Nonprofit leadership development is most effective when strategy, operations, finance, and people systems work together. One Abacus Advisory provides right-sized executive support that helps organizations improve accountability, strengthen board communication, navigate transitions, and build the internal structure needed for sustainable growth. The result is clearer leadership, healthier operations, and stronger mission execution without the overhead of multiple full-time executives.

See how nonprofit organizations gain clarity, stability, and stronger leadership support through tailored advisory services.
Nonprofits rely on experienced guidance that balances mission priorities with operational discipline.
Specialized support built around nonprofit governance, funding realities, and mission-driven decision-making.
Backed by over 25 years of finance and accounting experience serving complex organizations.
Right-sized fractional leadership gives nonprofits senior expertise without full-time executive overhead.
Clear, actionable reporting helps leaders and boards make confident strategic decisions.
Experienced advisors for mission-driven organizations.

Founder, Consulting CFO
Lorin Port is the Founder and Consulting CFO of One Abacus Advisory, bringing over 25 years of finance and accounting experience to the nonprofit sector. With a dedicated focus on nonprofit financial leadership for the past nine years, Lorin specializes in fractional CFO and COO services, nonprofit accounting, and NetSuite optimization. He has partnered with prominent organizations such as the San Diego Food Bank, Philadelphia Zoo, and Laguna Playhouse, delivering strategic financial guidance during periods of growth, transition, and complexity. Lorin is committed to empowering nonprofit leaders and boards with clear, actionable insights that drive stronger decisions and long-term organizational health. His flexible, right-sized approach ensures each client receives tailored support that aligns with their unique mission and operational needs.
Strong nonprofit leaders combine mission commitment with practical management skills. They communicate clearly, build trust with boards and staff, make informed financial decisions, and stay accountable to funders and stakeholders. Effective leaders also balance strategy with day-to-day execution, guide teams through change, and create systems that support long-term organizational health rather than relying only on individual effort.
Talk with an experienced advisor about your nonprofit’s needs.
Deep executive finance and leadership background.
Focused advisory support for nonprofit organizations.
Flexible leadership without full-time overhead.
Share your organization’s goals, challenges, or transition needs, and we’ll outline the right next steps for tailored executive support.
For immediate assistance, feel free to give us a direct call at +1 760-845-3808. You can also send us a quick email at lorin@oneabacusadvisory.com.
For immediate assistance, feel free to give us a direct call at +1 760-845-3808. You can also send us a quick email at lorin@oneabacusadvisory.com.