Denny's new owners are betting $620 million and a 24-month overhaul called "Project Grand Slam" on saving the 72-year-old diner chain, even as franchisees collapse and close locations without warning.
On September 3, franchise operator M15 Inc. abruptly shut all five of its Denny's restaurants across Minnesota and Wisconsin, leaving employees blindsided and customers locked out. The locations in Burnsville, North Branch, Maplewood, and Roseville, Minnesota, along with one in Hudson, Wisconsin, went dark with little or no advance notice to workers, the Daily Mail reported.
M15 Inc. told its staff it had borrowed "substantial amounts of money" over the previous year and could no longer meet payroll or purchase food and supplies. The operator cited falling revenue, cash shortages, and pressure from lenders as reasons for the sudden shutdown, and said it planned to file for Chapter 7 bankruptcy, a full liquidation, not a restructuring.
Denny's corporate office said it "was saddened by the closures" and was "urgently working with franchisees to explore reopening as many of the restaurants as possible under new ownership," though it offered no guarantees. The gap between those reassuring words and the reality on the ground, workers who showed up for a shift and found the doors locked, tells you something about the state of the casual dining business in America right now.
The five closures drew immediate backlash. On Reddit, commenters called the sudden shutdown "appalling" as a way to treat employees. One described the Burnsville location as "really poorly managed." Another recalled a bad experience at a Denny's branch in West St. Paul, though that location does not appear to be among the five M15 Inc. operated.
How many workers lost their jobs remains unclear. M15 Inc. has not disclosed a headcount, and Denny's corporate has not said whether any of the five locations have reopened or found new operators.
The M15 Inc. failure is not an isolated case. Denny's itself announced in October 2024 that it planned to close 150 restaurants by the end of 2025, a staggering number for a chain that still operates more than 1,300 locations worldwide. That wave of closures reflected years of declining foot traffic, rising costs, and a franchise model under stress from every direction.
Denny's is hardly alone. O'Charley's shut down entirely after 55 years in business, and other sit-down chains have faced similar reckoning.
Against that backdrop of closures, a consortium of three firms, TriArtisan Capital Advisors, Treville Capital Group, and Yadav Enterprises, announced a deal in November 2025 to acquire Denny's for roughly $620 million. The transaction closed on January 16, 2026, taking the publicly traded chain private.
TriArtisan has ties to brands including P.F. Chang's and TGI Fridays. Yadav Enterprises operates hundreds of restaurants and other food businesses. The involvement of private-equity-linked buyers in a struggling casual dining brand carries its own risks, as California Pizza Kitchen's co-founder has argued that private equity drove his chain into bankruptcy.
In April 2026, the new owners installed Christopher Bode, formerly Denny's chief operating officer, as chief executive. Bode's job is to execute the revival strategy the company has branded "Project Grand Slam," a name borrowed from the chain's signature breakfast platter, which has been on the menu since 1959.
The plan is ambitious on paper. Denny's expects to renovate as many as 350 restaurants in 2026 alone. It plans to open up to 20 new locations in 2026, followed by another 20 in 2027. A revamped menu, anchored by Triple Play Combo meals starting at $9.99 and a new Diner QP burger with 50 percent more beef than a standard quarter-pound patty, is expected to roll out to around 40 restaurants between late October and mid-November, with a wider launch planned for April 2027.
The chain is also expanding into catering through a partnership with the platform ezCater. Nearly 700 Denny's locations already offer the service, and the company expects close to 1,000 to participate by the end of September 2026.
Analysts at Placer.ai, a foot-traffic analytics firm, described Denny's as "in transition, not decline." That framing puts the most optimistic possible gloss on a brand that just announced 150 closures and watched a franchisee implode in the Upper Midwest. Whether "transition" leads somewhere better depends entirely on execution, and on whether the franchise operators who remain can survive long enough to see the renovations and menu changes arrive.
Applebee's has tried a similar playbook, reviving promotional deals to fight its own closures and a franchise bankruptcy. The results have been mixed at best.
Denny's corporate can draft renovation plans and test new burgers. But the company depends on independent franchise operators to run the restaurants, hire the staff, and keep the lights on. When an operator like M15 Inc. borrows heavily, bleeds revenue, and then vanishes overnight, the damage falls on the workers and the communities left behind, not on corporate headquarters.
The chain was founded in 1953 in Lakewood, California, by Harold Butler and Richard Jezak as a donut and coffee shop. Over seven decades it grew into one of the most recognized diner brands in the country. But recognition alone does not pay the bills, and the casual dining sector has been losing ground for years to fast-casual competitors, delivery apps, and consumers tightening their budgets.
Moe's Southwest Grill recently lost a franchisee to bankruptcy, with 16 locations shuttered across three states, another sign that the franchise model itself is under severe strain across the industry.
Denny's "Project Grand Slam" is a 24-month strategy. That means the new owners are asking customers, employees, and remaining franchise operators to hold on through at least early 2028 before the full vision takes shape. For the workers in Minnesota and Wisconsin who lost their jobs on September 3 with no warning, that timeline is meaningless.
Denny's own closure count has continued to climb, and the gap between corporate ambition and franchise-level reality remains the chain's most dangerous fault line.
Spending $620 million to buy a diner chain and then announcing renovations and new burgers is the easy part. The hard part is making sure the people running the restaurants can afford to stay open next month. Until Denny's solves that problem, "Project Grand Slam" is a blueprint, not a comeback.