NoticeAuthentic DeFonseka correspondence comes only from the defonseka.us domain.
DeFonseka knight mark DeFonseka Book a call
About · Chicago, Illinois

Built for the gap between where you are and where you need to be.

DeFonseka is a Chicago-based advisory that embeds inside founder-led companies as operating partner — owning financial governance, the KPIs that matter and a weekly OKR reporting cadence — and, for established companies entering complex or regulated categories, acts as a strategic market-development partner with a standing bench of investor, clinical and institutional relationships.

Operating Partner Financial Governance Weekly OKR Reporting Chicago-Based
Three terms we use carefully

Each of these words has been worn smooth by overuse. Here is what we mean by them.

01

Operating Partner

We sit between ownership and execution, and we carry deliverables. That means a named principal inside your operating cadence — owning the reporting rhythm, the decision thresholds, and the follow-through between meetings.

What it is notA standing advisory retainer, or a deck delivered from outside the business.
02

Financial Governance

The reporting layer founders postpone: board packs and forecast discipline, the handful of KPIs that actually move the business — each with a named owner and a threshold — and a weekly OKR report that shows movement against them while there is still time to act.

What it is notA monthly close with a nicer cover page, or a dashboard nobody reads.
03

Strategic Market Development

Category definition, go-to-market frameworks and — the part few firms can supply — the relationships. We activate an existing network of investors, clinicians, institutional leaders and regional partners on a client's behalf, because leveraging relationships bypasses the noise and gets to decision-makers directly.

What it is notLead generation, or introductions without accountability for what follows.
HeadquartersChicago, Illinois
DeploymentTypically within two weeks
Engagement modelPrincipal-led, outcome-scoped
Operating cadenceWeekly OKR reporting, board-ready
Who we work with

Founder-led companies in growth or transition — and enterprises entering a new market.

Founder-led clients need financial, technical and operational leadership before they are resourced to hire it full-time. Enterprise clients need a team whose only mandate is the new initiative — because in-house staff are optimized for the business that already exists, and a curated team carries no legacy priorities. In both cases we close the gap by joining the work, not by recommending that someone else do so.

CPG & food retailLicensing, multi-state expansion, cost to serve
MedtechCompliance discipline and capital planning
Wellness & longevityMargin structure and channel strategy
Enterprise & regulatedCategory entry, reimbursement, stakeholder access

Relationships bypass the noise. Curated teams execute new initiatives better than the staff already carrying your core numbers.

Leadership

The principal on every engagement.

Dhamitha Arsakularatna

Principal, DeFonseka

Dhamitha leads DeFonseka's advisory practice across CPG & food retail, medtech, wellness and community-platform engagements, bringing more than twenty years in private wealth management, corporate advisory and business development. A graduate of Drake University, Dhamitha holds a longstanding affiliation with Keiretsu Forum Midwest + Northeast and brings board and civic leadership experience — grounded in divergent thinking, financial governance and intellectual curiosity as the operating principles behind every engagement.

EducationDrake University
NetworkKeiretsu Forum Midwest + Northeast
Experience20+ years, private wealth & corporate advisory
FocusFinancial governance & market development
Get in touch

One conversation is enough to know whether we belong in your business.

Book a discovery call ↗ Chicago, Illinois · engagements worldwide