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Costco responds to lawsuit over customer-favorite food item: ‘Fatally flawed’

Published June 11, 2026 · Updated June 11, 2026 · By Michael Anderson

Costco Responds to Lawsuit Over Customer-Favorite Food Item: 'Fatally Flawed'

Costco responds to lawsuit over customer - Costco has contested a class-action lawsuit filed in a Southern California court, which alleges the membership warehouse chain misled consumers by advertising its popular $4.99 rotisserie chicken as containing "no preservatives." The legal action, initiated by two California plaintiffs under the guidance of the Almeida Law Group, targets the company's marketing claims and challenges the accuracy of its labeling practices.

Plaintiffs' Claims Target Costco's Labeling

The lawsuit, filed on January 22, asserts that Costco's rotisserie chickens, branded as Kirkland Signature Seasoned, were advertised as preservative-free despite including sodium phosphate and carrageenan in their ingredients. These additives, according to the plaintiffs, contradict the clear label statement, leading customers to believe the product was healthier or more natural than it actually is.

Plaintiffs' attorneys emphasize that the "no preservatives" label plays a crucial role in consumer decision-making, particularly for families prioritizing food quality. Wesley M. Griffith, a partner at Almeida Law Group, highlighted this in a statement following the lawsuit's initial filing. "Consumers reasonably rely on clear, prominent claims like 'No Preservatives,' especially when choosing what they and their families will eat," he said. "Costco’s own ingredient list contradicts its marketing. That’s unlawful, and it’s unfair."

“Consumers reasonably rely on clear, prominent claims like 'No Preservatives,' especially when deciding what they and their families will eat.”

Griffith's argument centers on the expectation that such labels provide definitive information. He pointed out that sodium phosphate, a common food additive, is often used to maintain moisture and extend shelf life, while carrageenan, derived from seaweed, functions as a stabilizer. These ingredients, though not traditionally seen as preservatives, could mislead buyers who associate "preservative-free" with a lack of any chemical additives.

Costco Defends Its Labeling Practices

In response, Charles Sipos, the attorney representing Costco, called the plaintiffs' claim "fatally flawed" in a recent court filing obtained by Nexstar. He argued that the FDA does not classify sodium phosphate or carrageenan as preservatives, and that their inclusion in the ingredients list is a standard practice for seasoning.

Sipos also emphasized that the "no preservatives" label was part of the product's packaging, not an exaggerated or deceptive statement. "The plaintiffs maintain this supposed price premium can be identified by evaluating the different prices between Costco’s Rotisserie Chicken and competitors’ products," he continued. "Yet, the Amended Complaint does not identify a single 'competitor' who prices a whole rotisserie chicken for sale for less than $4.99."

“Plaintiffs maintain this supposed price premium can be identified by evaluat[ing] the different prices between Costco’s Rotisserie Chicken and competitors’ products.”

Costco's defense hinges on the regulatory definitions of preservatives. Sipos stated that the additives in question are permitted under FDA guidelines and are commonly used in various food products, not just chicken. He further noted that the price of the chicken has remained consistent at $4.99 since the label was removed in response to the lawsuit, indicating that the alleged premium is not tied to the preservative claim.

Broader Implications for Consumer Trust

The lawsuit has sparked a broader debate about transparency in food labeling and the interpretation of health claims. While the plaintiffs argue that Costco's use of "no preservatives" creates a misleading impression, the company maintains that the label is accurate under current regulations. This case could set a precedent for how food manufacturers communicate about their products, particularly in the context of health-conscious consumer trends.

Costco's reputation for offering affordable, high-quality products has made its rotisserie chicken a staple for many shoppers. The $4.99 price point, which has remained unchanged despite the legal challenge, underscores the product's popularity and its role as a value-driven option. However, the lawsuit claims that this pricing strategy has been sustained through deceptive advertising, allowing Costco to charge more than competitors for a chicken that isn't entirely preservative-free.

Consumer advocates and legal experts are now closely watching the case to determine whether the "no preservatives" label should be interpreted more strictly. Some argue that the FDA's definition of preservatives is outdated and fails to account for the nuanced roles of additives in modern food production. Others, like Sipos, contend that the label remains compliant and that consumers are still informed of all ingredients through the packaging.

Costco's Legal Strategy and Consumer Impact

As the case progresses, Costco's legal team is focusing on reinforcing the validity of its labeling and the consistency of its pricing. Sipos’s recent filing highlights the company’s effort to counter the plaintiffs' argument by emphasizing the lack of evidence showing a price difference between Costco’s chicken and alternatives on the market. This approach aims to shift the focus from the preservative claim to the broader issue of consumer perception and the role of brand reputation in shaping buying decisions.

Meanwhile, the plaintiffs' attorneys are seeking to demonstrate that Costco’s marketing practices have systematically deceived customers. They argue that the absence of preservatives is a key selling point that influences purchasing behavior, and that the inclusion of sodium phosphate and carrageenan, even if not classified as preservatives, still undermines the claim. The case could also highlight how consumer trust is built through consistent branding and labeling, and how a single misstatement can have widespread consequences.

Nexstar reached out to Almeida Law Group for further comments but did not immediately receive a response. The ongoing legal battle may not only affect Costco’s product labeling but also raise questions about the future of health claims in food advertising. As the court weighs the evidence, the outcome could shape how retailers communicate the quality of their offerings to the public.

With the case set to determine the validity of the "no preservatives" claim, both sides are preparing for a potentially lengthy legal process. The public, meanwhile, remains divided, with some customers expressing disappointment over the label change and others defending Costco’s right to use FDA-approved terminology. As the lawsuit unfolds, it will serve as a case study in the intersection of marketing, regulation, and consumer expectations in the food industry.