Who makes Kirkland Signature Microwave Popcorn, Movie Theater Butter, 3.3 oz, 44-count?
As of July 5, 2026, evidence points to Weaver Popcorn Manufacturing, LLC as the manufacturer of Kirkland Signature Microwave Popcorn, Movie Theater Butter, 3.3 oz, 44-count, but no tier 1–3 source names the link directly.
The common claim
What most answers say — and what the evidence supports
The prevailing online guess names ConAgra (maker of Orville Redenbacher and Act II) or Ramsey Popcorn as the maker, reasoning from Midwest plant locations - and a widely repeated '2008 ConAgra Kirkland popcorn recall' story circulates as supposed proof. No tier 1-5 evidence supports either name: that 2008 recall appears only in content-mill articles and matches no FDA enforcement record or credible recall retrospective. Costco's own catalog data instead names Weaver Popcorn - Weaver Popcorn Manufacturing, LLC of Van Buren, Indiana, one of the world's largest microwave-popcorn co-manufacturers - so evidence points to Weaver.
Evidence & sources
Every source is graded on the six-tier rubric and archived, so the citation holds even if the original moves or paywalls. The tier badge grades the source; the status grades our confidence in the maker.
Tier 4
Costco's own product data embedded in the listing names 'WEAVER POPCORN' in its mfName (manufacturer) field on both the parent record and the item-level record for this exact product (UPC 096619167548), with a catalog startDate of 2017-02-05. Costco exposes this same field publicly as a 'manufacturername' search facet; reliability cross-checks against the Bloomberg-confirmed diapers listing ('FIRST QUALITY CONSUMER PR') and the exec-confirmed batteries listing ('DURACELL DISTRIBUTING INC'). Graded probable, not confirmed: machine-readable catalog data naming a supplier of record, with no press report or regulatory record independently naming Weaver for the Kirkland bag.
Tier 4
Corroborates Weaver's role as a private-label microwave-popcorn co-manufacturer without naming Kirkland or Costco: 'Weaver Popcorn Manufacturing is a recognized leader in the production and co-packing of popping corn, microwave popcorn, and ready-to-eat popcorn for numerous national brands.' Weaver (founded 1928, Van Buren, Indiana; acquired by AUA Private Equity in 2024) runs one of the world's largest microwave-popcorn co-manufacturing plants and produces microwave and ready-to-eat popcorn for national brands and private labels. Company-page corroboration of plausibility only; it does not itself establish the Kirkland link.
Frequently asked
Who makes Kirkland Signature microwave popcorn?
Is Kirkland popcorn made by ConAgra (Orville Redenbacher)?
Was Kirkland microwave popcorn ever recalled?
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