KoSa: The Customer and the Price Were Already Agreed

In the KoSa polyester price fixing and customer allocation case, Arteva Specialties, doing business as KoSa, agreed to plead guilty to coordinating prices and dividing customers for first-quality polyester staple sold in North America. Its criminal plea agreement describes rival producers meeting to decide both who would sell and at what price. For someone handling textile accounts, that is where a conversation between competitors can become the quote a customer receives.

What KoSa Agreed to Plead Guilty To

Charlotte-based KoSa’s October 31, 2002 plea agreement concerned a conspiracy beginning at least as early as September 1999 and continuing until at least January 2001. The agreement’s factual account describes meetings and discussions with other polyester staple producers. KoSa’s people agreed with rivals to raise and hold prices, coordinate increases and split up customers.

The Justice Department’s announcement of the criminal charges and plea agreements described how those decisions reached the market. Participants sold polyester staple at the agreed prices and to the agreed customers, issued price announcements and quotations in accordance with the agreements, and monitored and enforced adherence. We see a rigged choice: the suppliers who were supposed to compete for a buyer’s order had already agreed over the buyer and the price.

The same announcement reported a separate agreement to plead guilty by KoSa’s former U.S. director of textile staples. The Antitrust Division’s Dallas Field Office and the FBI in Dallas conducted the investigation.

The Fiber Behind the Customer Accounts

Polyester staple is an input sold to textile manufacturers, which makes the account relationship central to this case. KoSa’s plea agreement describes a petroleum-based, man-made fiber manufactured in varying thicknesses and cut into short lengths. Textile manufacturers incorporate it into fabrics for sheets, shirts and other apparel. Other forms go into products such as sleeping bags, pillows and comforters.

The agreement identifies first-quality polyester staple as the product covered by the conspiracy. A textile account manager may know which fiber the customer was buying, which supplier was meant to serve it and what changed after a discussion with a competitor. The plea also describes fiber, production and distribution supplies, and payments moving across state and national borders. A sale can therefore leave records with the people arranging delivery or payment as well as those setting the quote.

The commercial harm follows the purchase into the manufacturer’s costs. A buyer seeking fiber for its own production loses an independent offer when suppliers agree which of them will serve the account. The agreement over the price then reaches the same transaction. Dividing customers and coordinating prices reinforce each other at the point where the customer buys.

When a Polyester Customer Is Reserved for a Rival

A customer-allocation instruction can explain why a sales team stops competing for an account it otherwise could pursue. In the KoSa plea agreement, rival producers agreed on the customers to which they would sell and the prices they would charge. An insider’s knowledge becomes especially useful when it connects that agreement to the next commercial decision.

Consider an analogous situation: a textile-fiber account manager learns that a prospective customer has been reserved for a competitor. After a contact with that competitor, the manager receives a changed price instruction for the same account. We would want to understand who made the allocation, what the contact concerned and how the resulting offer carried out the instruction. The connection runs from the rival agreement through the sales desk to the buyer.

An account note assigning a customer and a revised supply quote could show different parts of that sequence. We would examine those records alongside the competitor contacts to understand how the sales operation put the arrangement into practice.

Price Announcements Were Part of Carrying Out the Agreement

The KoSa criminal announcement describes price announcements and quotations as products of the agreements between rivals. That gives an insider a way to connect what the customer saw with what the supplier had already decided. The outward-facing price letter and the internal conversation answer different parts of the same question: how did the agreement become an offer?

Monitoring matters for the same reason. The announcement says participants monitored and enforced adherence to their agreements. In an analogous business, a message asking whether an agreed increase held, or whether a reserved customer stayed with the designated supplier, could connect later sales decisions to the earlier arrangement. Who sent that message and what decision followed would matter as much as the price printed on the quote.

A parallel in Argos USA makes the paper trail concrete. Under its criminal deferred prosecution agreement, the ready-mix concrete company admitted coordinating jobs, fuel surcharges and environmental fees. Job allocations and price instructions put the arrangement into the sales operation. The parallel is the link between rival contacts and ordinary sales documents, a link an employee handling prices or accounts may recognize immediately.

What Can Help the Antitrust Division Understand My Report?

For antitrust violations like KoSa’s, the most useful evidence connects the participants, product, customer, agreement and resulting sales decisions. We work with an insider to understand that sequence, including what the person saw directly and what the business records explain. Someone who handled an account can give a price change a meaning that an outsider looking at a spreadsheet would miss.

The 2018 paper Review of Collusion and Bid Rigging Detection Methods in the Construction Industry, published in the Creative Construction Conference proceedings, reviews methods that examine pricing behavior and market shares. It draws a useful distinction between those patterns and what someone inside the business can explain:

In a polyester account, the insider may be able to explain why the customer assignment changed, who knew about the rival contact and which quote followed it. The numbers show the offer; the person who handled it may know the agreement behind it.

KoSa’s plea agreement itself paired documentary cooperation with access to people. It required the company to provide requested documents and information and use its best efforts to make its people available for interviews and testimony.

Would This Have Qualified Under Today’s Reporting Routes?

Comparable conduct today calls for an assessment of the information, the person reporting it and the transactions affected. For the Antitrust Whistleblower Rewards Program, the May 2025 Justice Department and Postal Service agreement sets the conditions for a reward. Our whistleblower experts examine those connections with you against the rules governing your report.

Your role in the conduct, leniency, confidentiality and whistleblower protection belong in that conversation too. We address those questions with antitrust whistleblower lawyers as part of evaluating your circumstances.

Where the information connects collusion to knowingly false government bids or invoices, we also assess a False Claims Act case. A whistleblower case under the False Claims Act can pay 15% to 30% of what the government recovers.

You Know Why the Quote Changed

If a customer was reserved for a rival and you know how that decision reached the sales desk, speak to our whistleblower experts about how the price was set. We help turn what you know about the fiber business into your strongest antitrust whistleblower case, and bring in antitrust whistleblower lawyers who understand price fixing. You have a partner from the first conversation through the pursuit of your case.