David Kimball went into his Prosper interview with a question that a banker might reasonably ask. Why, after all, did this business need to exist? He had spent years inside financial institutions. He understood their resources, their customers and their capacity to lend. So he asked: “Why can’t a bank do what you are doing at Prosper?” The interviewer returned the question: “You’ve worked for a bank. You tell me.”
It was a neat reversal. Kimball had arrived to examine a prospective employer; suddenly, his own experience was the exhibit. In his later telling, the exchange helped persuade him to join. The move also offered his family a move to the Bay Area. A career decision can contain both a theory about the future of finance and a perfectly ordinary preference about where to live.
He became Prosper’s chief financial officer in March 2016. By December, he was chief executive. Between those appointments came a difficult lesson in the distance between having a promising lending platform and having enough willing investors to keep it moving. Kimball’s story at Prosper begins in that gap.
A banker walks into a marketplace
His preparation had been unusually tangible for a technology executive. At Ford, he began as a plant financial analyst, working on budgets for a plastics plant. Before leaving, his responsibilities had extended to securitization in the United States and Europe and treasury work at Ford Credit of Europe. The path ran from the accounts of a factory to the markets that financed consumer borrowing.
Across ten years at Ford Motor Company and Ford Motor Credit Company, he worked in both the United States and the United Kingdom. Debt issuance and financial planning were part of the job. Those are useful experiences for someone who will eventually run a marketplace dependent on other people’s willingness to buy loans. An attractive screen cannot settle a funding obligation.
USAA followed. He served as its bank’s chief financial officer during the recession, became corporate treasurer, and later took financial responsibility across its operating businesses. The remit included banking, insurance, investments and real estate. His education, meanwhile, paired an MBA with a BA in English, both from Brigham Young University. Finance was his profession; it was not his only academic language.
When Prosper announced his arrival, it was hiring someone with two decades of financial experience. Kimball was entering a younger organization with a different appetite for speed. He had admired the responsibilities Ford entrusted to employees and the mission that animated USAA. Now he would have to discover what those lessons were worth when the company around him had fewer institutional cushions.
- Before ProsperA decade at Ford; finance and treasury roles at USAA.
- March 2016Joins Prosper as chief financial officer.
- December 2016Becomes chief executive officer.
- May 2019Adds chairman of the board to his responsibilities.
The awkward arithmetic of confidence
Prosper connects people seeking credit with investors seeking exposure to consumer loans. That arrangement gives the business two constituencies, each with a different wish list. Borrowers care about access, price and repayment. Investors care about credit performance and returns. Keeping both sides interested is an operating responsibility that persists long after a loan application becomes easy to complete.
In 2016, the weakness was painfully clear. Kimball later explained that Prosper had a concentrated investor base. When a handful of institutions pulled back, the effect on loan volume was substantial. Potential replacements were still waiting. July became the low point for originations. His account of the response was plain: “we need to have equilibrium.”
The company tightened credit, reviewed marketing and worked on its processes. It also reduced its workforce. The human cost mattered to Kimball’s account of that period: colleagues had to leave, and those who remained had experienced a company whose accustomed growth had reversed. Becoming CEO meant leading people who had already seen how quickly the mood could change.
The formal handover took effect on December 1, 2016. Aaron Vermut stepped away from daily leadership while retaining a board seat. Kimball had joined only months earlier, but he was no longer encountering the business from across an interview table. The difficult year had given him a close view of the team he would lead.
“We want to make sure that it’s sustainable and repeatable.”
David Kimball, 2017
Five billion dollars, with conditions attached
In February 2017, Prosper announced a loan purchase agreement with a consortium of institutional investors. The commitment covered up to $5 billion in loans over 24 months. The participants included affiliates of New Residential Investment Corp., Jefferies and Third Point, together with an entity managed by Soros Fund Management. It gave the new CEO a substantial piece of funding architecture to work with.
The distinction between that agreement and an equity fundraising matters. Five billion dollars was the maximum volume of loans the group could purchase under the arrangement. It was not five billion dollars deposited into Prosper’s corporate account. The consortium could also earn an ownership stake tied to purchases, and a lender syndicate provided for up to $1 billion in warehouse financing.
Potential loan purchases over 24 months.
Funding for loans, rather than a $5bn equity round.
For a leader trained in capital markets, the mechanism was familiar. Reliability came through commitments, counterparties and agreed incentives. The promise of digital lending still needed financial plumbing. Kimball’s earlier career had equipped him to recognize the pipes, including the ones that become conspicuous only when the water stops.
By September, Prosper announced a separate $50 million Series G investment from a fund co-managed by FinEX Asia. It also reported $775 million in second-quarter loan originations, up 32 percent from the preceding quarter. These were different kinds of progress: capital for the company, loans flowing through its platform, and evidence that the business had moved beyond its low point.
Leave the sheriff’s badge at home
Ask Kimball about the move from finance to leadership and he objects to a particular caricature of his old job: the “finance sheriff.” A CFO, in his view, should understand the business well enough to share responsibility for its results. A colleague who merely announces that everyone has spent too much is destined to become very familiar and rather unpopular.
That view helps explain his interest in partnerships between financial institutions and technology companies. He has argued that people trying to improve finance need to understand why its existing structures developed. Complicated products and procedures can have reasons behind them. Ignoring those reasons risks repeating expensive mistakes with a more pleasant interface.
He also offered aspiring entrepreneurs a direct instruction: “Surround yourself with people who challenge you.” It is advice with consequences for the chief executive delivering it. If colleagues are meant to challenge the leader, disagreement has to survive the meeting. The practical ambition is a business in which expertise travels across departmental boundaries, including the boundary around the CEO.
His language about founders is similarly revealing. Kimball did not found Prosper, which was established in 2005. Yet he has wanted its employees to retain the ownership and commitment associated with founders. In 2017, he also resisted rushing into additional lending categories before the existing business had proved itself. Expansion would have to earn its place.
A loan still ends at somebody’s kitchen table
The company eventually broadened its offering. By its twentieth anniversary in 2025, Prosper described a platform spanning personal loans, home equity products and a credit card. It said more than two million customers had accessed over $30 billion in total funding since inception. Those are company-wide, cumulative figures, spanning years before Kimball arrived as well as his tenure.
He remained CEO and chairman in Prosper’s April 2026 prospectus. The length of that tenure gives his earlier comments about durability a different weight. The new executive who inherited a funding problem had become the continuing leader of a business with multiple products and a longer customer history. The job now included making those products feel coherent to the people using them.
His public discussion of borrowing can be refreshingly inconvenient for a lender. In a September 2024 television interview, he warned that consolidating credit card balances does little good if the borrower runs the cards back up again. Comparing fees and interest matters; so do budgets and spending habits. A new repayment arrangement can coexist with an old spending problem.
In July 2026, Prosper extended personal loan repayment options to six years, with personal loans made by WebBank. The announcement linked the change to larger borrowing needs and demand for longer terms. It illustrates the continuing negotiation at the center of Kimball’s work: a payment has to fit into a life, while the lending arrangement has to work for the institutions behind it.
And then there is the unicycle
Among the capital markets credentials, Kimball’s public biography contains an unexpected inventory. He can juggle, walk on stilts, and ride both a pogo stick and a unicycle. It adds that he has never worked in a circus or been a busker. Evidently, there were other career options, although none would have made particularly good use of an MBA.
The detail is amusing partly because his professional language is so concerned with steadiness. Sustainable growth. Repeatable results. A funding base that can withstand change. His recreational repertoire involves rather more obvious opportunities to lose one’s balance. There is no need to turn that coincidence into a management theory. It is enough to let a financial executive have an unexpected talent.
Back at the interview, his banking experience had been offered back to him as a question. Years later, it remains a revealing part of his place at Prosper. He brought knowledge of established financial machinery to a company trying to make borrowing work differently. Every new product, funding agreement and repayment option returns him to the same practical test: whether the arrangement keeps working after the first enthusiastic introduction.