Diamond Foods
Corporate brand
UnclaimedFormer American packaged-food company known for Diamond of California nuts, Emerald snack nuts, Pop Secret popcorn, and Kettle potato chips.
Last updated October 30, 2026
AI crawler reads
No AI crawler has read this profile yet.
Overview
Diamond Foods was an American packaged-food company headquartered in San Francisco, California. Its business developed from Diamond Walnut Growers, a member-owned cooperative established in 1912 by California walnut growers. The company initially concentrated on processing, packaging, marketing, and distributing walnuts, later expanding into almonds and other culinary and snack nuts. Over time, it became one of the better-known American nut companies and built a portfolio that extended well beyond its original walnut cooperative roots. The company’s early development was closely associated with the growth of branded packaged nuts. Diamond began national advertising in 1919, entered export markets in 1930, and became the first nut company to advertise on television in 1950. In 1956, it centralized operations in Stockton, California. Its later processing and packaging activities included technological improvements such as laser sorting, introduced in 1989 to help remove shell fragments. Japan became its leading export market for shelled walnuts in 1997, while the company broadened its culinary offering in 1998 by introducing a full line of shelled packaged nuts for baking and cooking. Diamond expanded through both corporate restructuring and acquisitions. The cooperative converted to a Delaware corporation in July 2005 and completed an initial public offering under the Diamond Foods name. Before and after the public offering, the company added businesses and brands intended to diversify it into consumer snacks. The Emerald snack-nut line was launched in 2004, Harmony Foods was acquired in 2006, and Pop Secret popcorn was acquired from General Mills in 2008. In 2010, Diamond acquired Kettle Foods, giving it a significant potato-chip business in the United States and the United Kingdom. Its principal consumer brands included Diamond of California nuts, Emerald snack nuts, Pop Secret popcorn, and Kettle Brand or Kettle Chips potato chips. The company’s growth strategy was damaged by an accounting controversy involving payments to walnut growers and the timing of their recognition in the company’s financial reporting. The controversy led to a delay in financial filings, the cancellation of a proposed transaction involving Procter & Gamble’s Pringles business, management changes, regulatory action, and substantial disruption to operations. Diamond ceased production at its Fishers, Indiana facility in January 2013, and the Harmony brand was discontinued. Diamond Foods ultimately ceased to exist as an independent company after Snyder’s-Lance acquired it in 2016. The former Diamond snack operations later became part of Campbell Soup Company when Campbell acquired Snyder’s-Lance. The Diamond of California culinary-nut business was separated from the former corporate group and sold to Blue Road Capital in 2017. Consequently, the Diamond Foods corporate entity is defunct, while several brands associated with it continued under different ownership. Diamond Foods Inc. was an American food company known for nuts and snacks, owning brands like Emerald. The company faced accounting scandals.
History
Diamond Foods traces its origins to 1912, when a group of California walnut growers formed Diamond Walnut Growers as a member-owned agricultural cooperative. The cooperative was created to give growers a collective platform for processing, packaging, marketing, and distributing walnuts. Its development coincided with the increasing importance of branded packaged foods in the United States, and Diamond became an early advertiser in the nut category. It launched a national advertising campaign in 1919 and began selling products internationally in 1930. The company continued to modernize and expand its consumer presence during the twentieth century. It became the first nut company to advertise on television in 1950 and centralized its operations in Stockton, California, in 1956. In 1989, Diamond adopted laser sorting technology at a processing plant to help detect and eliminate shell fragments. By the late 1990s, Japan had become its leading export market for shelled walnuts. In 1998, it introduced a broad line of shelled packaged nuts designed for baking and cooking, extending the company from a seasonal in-shell walnut supplier into a more versatile culinary-nut brand. In 1999, the business changed its name to Diamond of California. Diamond also used high-profile institutional and promotional activities to build its reputation. It served as the exclusive nut supplier to United States Olympic teams in 2000, 2002, and 2004. In 2004, J Stone & Son merged with Diamond Foods, and the company launched Emerald, a snack-nut line aimed at modern convenience and portion-controlled consumption. The following year, Diamond Walnut Growers converted to a Delaware corporation and completed an initial public offering under the Diamond Foods name. Its stock traded on the Nasdaq under the symbol DMND. The post-IPO company pursued a faster acquisition-led expansion strategy. In 2006, it acquired Harmony Foods, including a production facility in Indiana. A 2007 Super Bowl advertisement for Emerald featuring Robert Goulet received strong advertising-industry recognition and was associated with a reported increase in Emerald sales. Diamond acquired Pop Secret popcorn from General Mills in 2008, adding microwave popcorn and popcorn kernels to its portfolio. Emerald reached a reported ten-percent share of the snack-nut market in United States food stores in 2009. In 2010, Diamond acquired Kettle Foods, whose products were sold as Kettle Brand in the United States and Kettle Chips in the United Kingdom. The company’s expansion culminated in a proposed 2011 transaction with Procter & Gamble under which Pringles would have been combined with Diamond. The proposed deal was expected to close in 2012, but it was cancelled after Diamond became embroiled in an accounting controversy. The issue concerned the company’s treatment and timing of payments to walnut growers and raised questions about the accuracy of its financial reporting. The controversy delayed filings, damaged confidence in management, and contributed to the collapse of the Pringles transaction. The operational consequences continued into 2013. Diamond officially stopped production at its Fishers, Indiana facility on January 18, 2013. More than 100 full-time employees were dismissed, and the Harmony brand was permanently discontinued. Regulatory proceedings followed. The SEC authorized a settlement in 2014 involving the accounting matter and separately reached a settlement with former chief executive Michael Mendes. Litigation involving former chief financial officer Steven Neil remained unresolved at that stage, but the SEC entered into a settlement with him in 2015. Diamond Foods ended as an independent company in 2016, when Snyder’s-Lance acquired it and the businesses operating under the Diamond Foods name. The former snack portfolio later became associated with Campbell Soup Company after Campbell acquired Snyder’s-Lance. The Diamond of California culinary-nut business was subsequently sold to Blue Road Capital in 2017. These transactions separated the former company’s snack and culinary-nut activities among new owners, leaving Diamond Foods itself as a defunct corporate entity while several of its consumer brands continued.
- 2017
Diamond of California culinary business sold
[1]Blue Road Capital acquires the Diamond of California culinary-nut business.
- 2016
Acquired by Snyder’s-Lance
[1]Snyder’s-Lance acquires Diamond Foods and its operating businesses.
- 2013
Fishers facility closes
[1]Diamond ends production at its Fishers, Indiana plant and discontinues Harmony.
- 2012
Pringles transaction cancelled
[1]The proposed Pringles combination with Procter & Gamble is cancelled amid an accounting controversy.
- 2010
Kettle Foods acquired
[1]The company acquires Kettle Foods and expands into potato chips in the United States and United Kingdom.
- 2008
Pop Secret acquired
[1]Diamond acquires the Pop Secret popcorn business from General Mills.
- 2005
Corporate conversion and IPO
[1]Diamond Walnut Growers converts to Diamond Foods, Inc. and becomes publicly traded on Nasdaq.
- 2004
Emerald snack-nut line launches
[1]Diamond introduces Emerald as a branded line of snack nuts and related convenient snack products.
- 1999
Name changes to Diamond of California
[1]The business adopts the Diamond of California name before its later corporate conversion.
- 1998
Shelled culinary-nut line introduced
[1]Diamond introduces packaged shelled nuts for baking and cooking.
Products and positioning
A branded packaged-food company combining a heritage nut business with nationally marketed snack brands, popcorn, potato chips, and food-service ingredients; positioned in mid-to-high-end nut snacks.
Nuts
Diamond of California
The company’s heritage nut line included in-shell walnuts and other nuts commonly sold through grocery produce departments, particularly during the winter holiday season. It also covered shelled and processed nuts for baking and cooking, sold through grocery, mass, club, and other retail channels. The brand served both household consumers and commercial food users, and its culinary-nut business was later separated from the former Diamond Foods portfolio.
Snack nuts · 2004
Emerald
Emerald was Diamond’s principal snack-nut brand. Its products included roasted, glazed, flavored, and mixed nuts, trail mixes, and portion-controlled snack formats such as 100-calorie packs. The line was positioned around portable snacking and included options marketed as better-for-you alternatives within the packaged-snack category.
Popcorn
Pop Secret
Acquired from General Mills in 2008, Pop Secret gave Diamond a major popcorn platform spanning microwave popcorn and popcorn kernels. The portfolio included flavored microwave products, Homestyle popcorn, 94% Fat Free varieties, and snack-size 100-calorie formats.
Potato chips
Kettle Brand
Kettle Brand was the United States label for the potato-chip business Diamond acquired through Kettle Foods in 2010. The range included multiple flavors, styles, and package sizes. In the United Kingdom, related products were marketed under the Kettle Chips name. The portfolio also included baked and reduced-fat options.
Potato chips
Kettle Chips
Kettle Chips was the United Kingdom branding associated with Diamond’s Kettle Foods potato-chip business. Products were offered in a range of flavors and formats and formed part of the company’s international snack operation after the 2010 acquisition.
Food ingredients
Diamond food-service and ingredient products
Diamond supplied North American and international food processors, restaurants, bakeries, food-service companies, and distributors with in-shell, shelled, processed, glazed, and custom-processed nuts. This business complemented the company’s consumer brands by serving commercial customers requiring specified formats and processing.
Controversies
2015
SEC settlement involving former CFO
The SEC entered into a settlement with former chief financial officer Steven Neil in connection with the Diamond Foods accounting controversy.
2014
SEC settlement involving Diamond Foods and former CEO
The Securities and Exchange Commission authorized a settlement related to the accounting matter and separately settled with former chief executive Michael Mendes.
2012
Diamond Foods accounting controversy
Diamond Foods faced an accounting controversy concerning the treatment and timing of payments to walnut growers. The matter led to delayed reporting, scrutiny of senior management, disruption of the company’s expansion strategy, and cancellation of the proposed Pringles transaction.
Marketing campaigns
- 2007Emerald Super Bowl advertisement featuring Robert Goulet
United States
Diamond promoted Emerald snack nuts with a Super Bowl commercial featuring entertainer Robert Goulet. The advertisement received a top ranking from Advertising Age according to the reference material. The campaign was associated with a reported 68 percent increase in Emerald sales and helped raise the line’s profile.
Outcome. The campaign was associated with a reported 68 percent increase in Emerald sales and helped raise the line’s profile.
- 2000U.S. Olympic team nut-supplier program
United States
Diamond served as the exclusive nut supplier to United States Olympic teams in 2000, with the arrangement also reported for the 2002 and 2004 Games. The program associated Diamond with national-team sports and high-profile institutional consumption.
Outcome. The program associated Diamond with national-team sports and high-profile institutional consumption.
- 1950Diamond television advertising
United States
Diamond brought its nut marketing to television and was identified as the first nut company to advertise on the medium. Television became an additional channel for building broad consumer awareness of the brand.
Outcome. Television became an additional channel for building broad consumer awareness of the brand.
- 1919National Diamond nut advertising campaign
United States
Diamond launched a national advertising campaign at a time when branded packaged nuts were becoming more prominent in American retail. The campaign established Diamond as an early national marketer in the nut category.
Outcome. The campaign established Diamond as an early national marketer in the nut category.
Brand decisions
2017
Separate the Diamond of California culinary-nut businessM&ABackground
The former Diamond Foods portfolio was divided between snack operations and the culinary-nut business.
Action taken
Blue Road Capital acquired the Diamond of California culinary-nut business.
Aftermath
The Diamond of California nut business continued under separate ownership from the former Diamond Foods snack operations.
2016
Sell Diamond Foods to Snyder’s-LanceM&ABackground
Diamond Foods was no longer operating as an independent public packaged-food company after the accounting controversy and related strategic disruption.
Action taken
Snyder’s-Lance acquired Diamond Foods and the businesses operating under its name.
Aftermath
Diamond Foods ceased to exist as an independent corporate entity; its former brands and businesses were subsequently reorganized under other owners.
2013
Close Fishers plant and discontinue HarmonyStrategyBackground
The company undertook operational changes after the accounting controversy and the failure of the Pringles transaction.
Action taken
Diamond ceased production at its Fishers, Indiana facility and permanently discontinued the Harmony brand.
Aftermath
More than 100 full-time employees were dismissed, and the company reduced its manufacturing footprint.
2011
Propose a combination involving PringlesM&ABackground
Diamond and Procter & Gamble announced a plan under which the Pringles business would be combined with Diamond.
Action taken
The companies announced a transaction expected to close in 2012.
Aftermath
The transaction was cancelled in 2012 after Diamond became involved in an accounting controversy.
2010
Acquire Kettle FoodsM&ABackground
Diamond sought to broaden its packaged-snack portfolio beyond nuts and popcorn.
Action taken
The company acquired Kettle Foods, adding potato-chip operations in the United States and the United Kingdom.
Aftermath
Kettle became one of Diamond’s principal snack businesses and expanded its international footprint.
2005
Convert the cooperative into a public corporationStrategyBackground
Diamond’s predecessor had operated as a member-owned California walnut cooperative since 1912.
Action taken
The organization converted to a Delaware corporation, adopted the Diamond Foods name, and completed an initial public offering.
Aftermath
The conversion provided a public-company structure for acquisition-led expansion but also subjected the business to public reporting and regulatory scrutiny.
Sources1 sources
Cite this profile: Cite the canonical profile. /brand-wiki/diamond-foods · Editorial policy · How profiles are compiled