Tulalip Tribes Join Seattle NBA Expansion Bid With Tribal Arena District

The Tulalip Tribes has stepped into one of the largest prospective transactions in North American sports, partnering with a private equity firm on a bid for a Seattle NBA expansion franchise anchored by an arena and entertainment district on tribal-owned land near Marysville, Washington. The arrangement, disclosed in early September, would place a tribal nation at the center of a major-league venue project rather than in the supporting role tribes have historically occupied in professional sports.

New York-based BlackSun Private Equity is "100 percent partnering" with the tribe on the development if the investor group secures a franchise, Nick Rathod, the firm's chief of global strategy, told The Athletic. BlackSun chief executive Atonn Muhammad separately told The Seattle Times that the group believes it can assemble investors for a bid of up to $8.1 billion. Neither the tribe nor the firm has disclosed Tulalip's proposed investment, its ownership stake, or a specific arena site.

The project would sit roughly 35 miles north of downtown Seattle in Snohomish County, adjacent to the commercial corridor the tribe has spent two decades building along Interstate 5. Tulalip operates Quil Ceda Village, a federally chartered municipality that houses the tribe's gaming, retail and entertainment assets and functions as one of the most developed tribal commercial districts in the United States.

Why a Tribal Arena District Is Different

The strategic logic is familiar to anyone who has watched tribal gaming enterprises diversify over the past decade: use the balance sheet that gaming built to acquire assets with longer duration and lower regulatory exposure. What distinguishes the Tulalip proposal is the land. A major-league arena built on tribal-owned land near Marysville would sit inside a development and permitting framework the tribe substantially controls, rather than one negotiated with a municipal government across a decade of public hearings and bond referenda.

That control cuts both ways. Tribal land held in trust cannot be mortgaged in the conventional sense, which shapes how an arena of this scale would be financed — typically through leasehold structures, tribal enterprise debt, or partner equity rather than a straightforward construction mortgage. It also means the tribe, not a stadium authority, absorbs a meaningful share of the infrastructure obligation: roads, transit access, parking, and utility capacity for a venue drawing tens of thousands of visitors on event nights. Tulalip's existing footprint at Quil Ceda Village gives it more of that capacity in place than most tribal landowners would have, which is likely a central reason the site is in play at all.

"We are also always looking for ways to add to our entertainment offerings and diversify our economy," Tulalip Chairman Hazen Shopbell said in a statement. "When Tulalip wins, all of Snohomish County wins because the jobs we create and energy we generate stay right here in the local community."

The bid also arrives during an active year for Tulalip on the regulatory side. The tribe reached a tentative agreement with the Washington State Gambling Commission on a proposed Class III compact amendment that went to a commission vote in late August, part of a broader wave of Washington compact amendments moving through the state's review process this year. Readers tracking the state's tribal operators can find the full roster on the Washington state hub.

The Competitive and Procedural Picture

BlackSun is one of two known bidders for a prospective Seattle franchise. The other is One Roof Sports and Entertainment, the umbrella company headed by Samantha Holloway that holds a majority stake in the NHL's Seattle Kraken and controls an interest in Climate Pledge Arena, the existing downtown venue. That contrast — an established operator with a built arena versus a new entrant proposing a greenfield district 35 miles north — will likely define how the league evaluates the two groups.

Several caveats are material. The NBA has not opened a formal expansion process, and no franchise can be awarded without approval from the league and its board of governors. The $8.1 billion figure describes a bidding capacity that BlackSun says it can assemble from high-net-worth individuals and other investors, not committed capital. Seattle has been without an NBA team since the SuperSonics relocated to Oklahoma City in 2008, and expansion speculation has produced more announcements than outcomes in the years since.

A Widening Pattern of Tribal Sports Ownership

Whatever happens in Seattle, the bid extends a trend that has accelerated sharply. The Mohegan Tribe was first, purchasing the WNBA's Orlando Miracle in 2003, relocating the franchise to Connecticut and renaming it the Connecticut Sun — an asset the tribe agreed this year to sell for $300 million, redirecting proceeds toward debt reduction and reinvestment in its core gaming and hospitality operations. Wilton Rancheria acquired majority ownership of Sacramento Republic FC in 2024. The Sycuan Band of the Kumeyaay Nation is a co-owner of Major League Soccer's San Diego FC. Native-backed private capital has also moved into overseas football, including an investment in English Premier League club Ipswich Town.

Those precedents span a wide range of check sizes, and none approaches the scale contemplated here. An NBA expansion franchise plus a purpose-built arena district would represent a multiple of any tribal sports investment made to date, and it would put a tribal nation's balance sheet alongside institutional and high-net-worth capital in a governance structure the league scrutinizes closely. The strategic questions — how ownership stakes are structured, how tribal capital is protected in a partnership with outside investors, and what happens to a district's economics if a franchise never materializes — are the same ones tribal enterprises have worked through on smaller sports and entertainment assets, now at an order of magnitude more risk. Our broader coverage of how operators are approaching sports and entertainment assets examines that calculus in detail.

For Tulalip specifically, the arena bid is legible as the next layer on a development thesis the tribe has pursued consistently: build density along the I-5 corridor, capture regional visitation that would otherwise stop in Seattle, and convert gaming cash flow into assets that generate revenue independent of the compact. The tribe's Quil Ceda Village enterprise profile traces how that footprint was assembled. An NBA district would be the most ambitious expression of that strategy by a considerable margin — and the one most dependent on a decision the tribe does not control.