The Endorsement Deal Is Becoming a Cap-Table Deal

Strategic Analysis | September 19, 2026

For most of the history of athlete endorsements, the transaction was simple.

The company had money. The athlete had attention. The company rented the attention.

That model is beginning to look incomplete.

When Kylian Mbappé left his longtime relationship with Nike and joined On in September 2026, the announcement was not framed merely as another footwear sponsorship. On said Mbappé would work directly with its product teams as the company entered football, while Reuters reported that his compensation included both cash and equity. A week earlier, Athletic Brewing had introduced Dak Prescott and Drake Maye not simply as endorsers, but as “athlete-owners.” Indiana Fever star Aliyah Boston recently became a co-owner of Sequel in exchange for marketing work. Christian McCaffrey went further: after declining to renew his Nike relationship, he joined footwear startup While on Earth as a co-founder and investor.

Those deals differ materially in structure, size and risk. But they point in the same direction.

The athlete is no longer merely selling the product. Increasingly, the athlete is buying into the company.

And that changes much more than the compensation package.

The traditional endorsement deal monetizes fame. The equity deal capitalizes it.

A brand can now effectively tell an athlete: instead of paying entirely in cash for the customers your name may bring us, we will give you a piece of the enterprise those customers may help build. The athlete trades certainty for upside. The company trades dilution for lower cash expense, stronger alignment and a partner who has a financial reason to care about what happens after the commercial airs.

That sounds like an obvious win-win. Sometimes it will be.

But once an athlete moves onto the cap table, a sponsorship agreement starts behaving like an investment transaction. Valuation matters. Liquidity matters. Dilution matters. Taxes matter. Securities laws matter. Termination rights matter. And the meaning of the word “owner” matters a great deal more than the press release usually suggests.

The next generation of endorsement negotiations will therefore be less about one question—How much will you pay me?—and more about another:

What exactly am I helping you build, and how much of it do I get to own?

The economics explain why this is happening.

For a mature company with billions of dollars in revenue, paying an athlete a guaranteed endorsement fee is ordinary marketing spend. For a startup or challenger brand, cash is different. Every dollar paid to an athlete is a dollar unavailable for inventory, product development, hiring, distribution or customer acquisition.

Equity changes the equation.

Instead of purchasing an athlete's influence entirely with current cash, the company can compensate part of that influence with future enterprise value. If the partnership works, both sides participate in the growth. If the company fails, the company has preserved cash and the athlete bears part of the loss.

That makes the athlete something unusual: part spokesperson, part distribution channel, part product consultant and part investor.

Aliyah Boston's Sequel arrangement captures the model particularly well. Forbes reported that Boston received equity in exchange for social-media and other marketing work, after she had already been a user of the company's product. Christian McCaffrey's arrangement with While on Earth goes further: the company calls him a co-founder and investor, and McCaffrey has been involved in product feedback and future strategy.

That is not merely a new compensation format. It is a different theory of athlete marketing.

The old model asked: How many impressions can this athlete generate?

The new model increasingly asks: How much enterprise value can this athlete help create?

That distinction matters because the best athlete partners can contribute something that conventional investors cannot easily buy: immediate distribution, cultural legitimacy, product credibility and a community predisposed to pay attention.

For the right company, athlete influence can operate much like capital. It accelerates growth.

The difference is that instead of issuing shares for money, the company is issuing some portion of its economics for attention, labor, reputation and access.

From the athlete's perspective, the appeal is equally understandable.

A $1 million endorsement check will always be worth approximately $1 million before taxes.

A stake in a company might be worth nothing.

It might also be worth $20 million.

That asymmetry is the attraction.

Michael Jordan's relationship with Nike remains the historical archetype for sharing in the economics generated by an athlete's brand. But today's athlete is increasingly looking beyond royalties tied to a particular product and toward actual company ownership.

The important point is that the athlete is not merely betting on the company.

The athlete is often betting on the athlete.

An elite athlete may reasonably believe that her own audience, credibility and promotional work can increase the value of the company in which she has received ownership. Unlike a passive venture investor, she possesses one of the inputs capable of changing the investment's outcome.

That creates a powerful form of alignment.

It also creates concentration risk that rarely gets discussed.

An athlete's earning power is already dependent on performance, popularity, health and public relevance. If that athlete converts endorsement cash into stock in businesses whose success also depends partly on the athlete's popularity, the same underlying asset—her personal brand—is supporting both her labor income and her investment portfolio.

In investment terms, that is not diversification.

It is doubling down on yourself.

For some athletes, that is rational. Few people possess better information about their own willingness to promote a product, their connection with an audience or their ability to move culture.

But “take equity” is not automatically sophisticated advice. Sometimes the sophisticated move is taking the check.

This is where the public discussion often becomes dangerously imprecise.

“Equity” can mean common stock. Preferred stock. Restricted stock. Restricted stock units. Options. Profits interests. Warrants. A direct investment purchased by the athlete. Equity earned through services. Or some combination of cash and ownership.

Those instruments can produce radically different outcomes.

Consider Stephen Curry's 2023 extension with Under Armour.

Under Armour disclosed to the SEC that it granted a Curry-affiliated trust restricted stock units covering 8,823,530 Class C shares, valued at $75 million when granted. The award was expressly described as partial consideration for Curry's athlete, product, brand, ambassador and endorsement agreement. Half was scheduled to vest in September 2029 and half in September 2034, subject to proration following early termination.

That is not the economic equivalent of handing Curry $75 million.

The award tied substantial value to time, the company's share price and the continued contractual relationship.

Then reality intervened.

Under Armour and Curry announced in November 2025 that Curry Brand would separate from the company. Under Armour subsequently recorded significant non-cash contract-termination costs primarily related to that separation.

The lesson is not that the transaction failed. The lesson is that equity makes the exit clause almost as important as the entrance.

When an athlete receives ownership as part of a commercial relationship, sophisticated drafting has to answer questions a conventional endorsement agreement can sometimes avoid.

What happens to unvested equity if the company terminates the athlete without cause? What if the athlete retires? Gets injured? Changes teams? Dies? Triggers a morality clause? What if the company is sold before the award vests? Does the athlete receive accelerated vesting? Cash-out rights? Nothing?

And private-company deals add an entirely different set of questions.

A headline saying an athlete owns “1%” of a startup tells you surprisingly little. Is that percentage calculated on a fully diluted basis? What happens after the next financing round? Does preferred stock held by investors carry liquidation preferences that get paid before the athlete's common stock? Are there repurchase rights? Transfer restrictions? Tag-along rights? Information rights? Preemptive rights? A board seat?

An athlete can own a percentage of a company without owning the same percentage of its eventual exit proceeds.

“Co-owner” is a marketing description. The cap table is the economic description.

There is another reason these arrangements cannot be treated like ordinary sponsorship contracts: stock is a security.

That sounds obvious. Its consequences are not.

A private company issuing securities as compensation may be able to use SEC Rule 701, which provides an exemption for certain compensatory issuances to employees, directors, consultants and advisers. But Rule 701 has conditions. Among other things, eligible consultants and advisers generally must be natural persons providing bona fide services, and those services cannot involve capital raising or promoting a market for the company's securities. Securities issued under Rule 701 are restricted rather than automatically freely tradable, and larger issuances trigger additional disclosure requirements.

Other transactions rely on different exemptions. Under Armour, for example, disclosed that Curry's award was issued pursuant to the private-offering exemption in Section 4(a)(2) rather than through a public issuance.

The practical point is simple:

Putting an athlete on the cap table is not the same legal act as putting an athlete on a billboard.

The issuer must have a valid basis for issuing the security. The documentation needs to reflect what the athlete is actually receiving. And restricted stock may remain illiquid even if everyone involved casually describes it as compensation worth some impressive headline number.

SEC Rule 144 illustrates the problem. Restricted securities generally cannot simply be sold whenever their holder wants cash; applicable holding periods and other conditions may apply, with the rules differing depending on whether the issuer is publicly reporting and whether the holder is an affiliate.

For a professional athlete accustomed to guaranteed endorsement payments, that distinction is enormous.

A $2 million check buys houses.

A theoretical $2 million of private-company common stock buys patience.

Then there is the tax problem.

Receiving equity for services does not mean receiving tax-free upside.

Federal tax rules generally treat property transferred in exchange for services as compensation. Restricted property is generally included in income when it becomes substantially vested unless an available election changes the timing; nonstatutory options and RSUs have their own timing rules.

That creates one of the least glamorous but most important risks in athlete-equity deals:

The tax bill can become real before the wealth does.

An athlete who receives illiquid private-company equity may eventually owe tax based on a valuation without having a market into which the shares can readily be sold. Depending on the instrument, vesting schedule and structure, tax planning therefore becomes inseparable from deal negotiation.

This is one reason the best arrangements will rarely be “equity instead of cash” in the literal sense.

Cash can fund taxes. Cash can diversify risk. Cash cannot be diluted.

The more likely long-term structure for elite athletes is a portfolio approach: guaranteed cash establishes the floor, while equity, options, royalties or performance-based ownership create the upside.

Athlete ownership also creates a paradox for marketing.

Brands like equity because ownership makes the endorsement look more authentic.

Regulators care about ownership for exactly the same reason.

The Federal Trade Commission's endorsement guidance requires disclosure of material connections between endorsers and advertisers when consumers would not reasonably expect them. A financial relationship is the obvious example, and equity is a particularly meaningful one: the athlete may directly benefit if consumers buy the product and increase the company's value.

So the line “I believe in this company so much that I invested in it” may be excellent marketing.

It is also information consumers may need in evaluating the endorsement.

Securities law creates an additional boundary when the promotion moves from the company's products to the company's securities.

Section 17(b) of the Securities Act prohibits compensated publicity describing a security without disclosure of the consideration received. SEC enforcement actions against celebrities including Kim Kardashian and former NBA star Paul Pierce illustrate that the agency does not treat celebrity promotion of securities as ordinary influencer marketing.

The distinction matters.

An athlete saying, “I own part of this hydration company and love the drink” principally raises endorsement-disclosure issues.

An athlete saying, “I own shares in this company and you should invest too” can enter a very different regulatory neighborhood.

The equity itself does not prohibit the endorsement. It simply makes disclosure architecture more important.

The trend becomes particularly interesting in college athletics.

Current Division I NIL rules require reporting of qualifying third-party NIL arrangements, and deals involving associated entities or individuals are evaluated under standards that include a valid business purpose and compensation within a reasonable range compared with similarly situated people. The NCAA's public NIL guidance describes compensation broadly, including money, products and services, while deals of $600 or more generally fall within reporting requirements.

That framework was largely designed around a world in which compensation can be expressed in dollars.

Equity complicates the exercise.

What is the “value” of 25,000 options in a private startup?

The last financing price? A 409A valuation? The expected value after accounting for the exercise price? The value of common stock after preferred liquidation rights? What if the company has never raised outside capital?

Those are not merely tax questions. In the college context, they can become eligibility and compliance questions because the system is attempting to determine whether compensation is commensurate with actual NIL value.

That does not mean equity-based NIL deals are impermissible.

It means the more sophisticated the compensation becomes, the harder it may be to force the transaction through a regulatory system looking for comparable market prices.

Cash is easy to benchmark.

A startup option is not.

Expect that problem to become more important as college athletes become more sophisticated investors and startups become more aggressive in using NIL as an acquisition channel.

There is a temptation to treat ownership as inherently more enlightened than endorsement cash.

That would be a mistake.

Most startups fail. Private shares are illiquid. Minority shareholders frequently have little control. Valuations can fall. Future financing rounds dilute existing owners. Athletes already face unusually short and uncertain earning windows.

Guaranteed cash has virtues.

And equity partnerships remain easiest to justify for athletes with substantial existing wealth, unusually strong bargaining leverage, or authentic ability to influence the company's trajectory. Kylian Mbappé can afford to make a different risk calculation than a rookie whose first endorsement deal may represent meaningful financial security.

There is also a branding problem.

Calling athletes “owners” creates expectations. If the athlete has no meaningful governance rights, receives a tiny stake, performs the same deliverables as a conventional spokesperson and possesses no role beyond marketing, the ownership story can become little more than sophisticated packaging.

That is why the relevant question is not whether an athlete receives equity.

It is whether ownership changes the relationship.

The endorsement agreement of the future is therefore likely to become more modular.

The athlete may receive a cash guarantee for defined services, equity that vests over the relationship, additional ownership tied to sales or enterprise milestones, royalties on athlete-specific products, acceleration if the company is acquired, and negotiated protections if the commercial relationship ends early.

For private companies, athletes and their advisers will increasingly need to diligence the same things venture investors examine: capitalization, financing history, preference stack, dilution, governance rights, transfer restrictions and realistic paths to liquidity.

Brands will have decisions of their own.

Giving an athlete equity saves cash today, but permanent equity can become spectacularly expensive if the athlete helps create a billion-dollar company. Founders therefore have reason to prefer vesting, options, repurchase rights and performance thresholds.

The result will be a tug-of-war over who bears uncertainty.

Cash puts most of it on the company.

Equity shifts more of it to the athlete.

The sophisticated deal splits it deliberately.

And representation businesses will have to evolve with the transaction. Negotiating an endorsement fee is fundamentally different from determining whether restricted common stock is worth surrendering guaranteed compensation. The latter requires understanding not merely the athlete's marketing value, but the company's capitalization, tax structure and exit economics.

The athlete's business team is increasingly becoming an investment committee.

The biggest change in athlete marketing is not that athletes suddenly discovered the stock market.

It is that both sides have begun to understand what athlete influence actually is.

It is distribution.

It is customer acquisition.

It is product credibility.

It is cultural positioning.

And, under the right circumstances, it is economically valuable enough to function like capital.

That is why the endorsement relationship is moving deeper into the business. Athletes who once appeared in advertisements are becoming investors, product partners, founders and strategic owners. Brands that once rented athlete attention are increasingly willing to share enterprise value to secure it.

But ownership is not automatically better than compensation. It is simply a different trade.

A check pays the athlete for what the athlete's name is worth today.

Equity makes a bet on what that name can help build tomorrow.

And when the bet works, the most valuable part of the endorsement may no longer be the endorsement at all.

It may be the shares.