1038-00001 · Cascade Retail Holdings · Internal Memoranda & Analysis

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PRIVILEGED AND CONFIDENTIAL — ATTORNEY WORK PRODUCT

MEMORANDUM

Matter: FTC v. Cascade Retail Holdings Inc. et al., Case No. 2:25-cv-01087-RAJ (W.D. Wash.)

Matter Number: 1038-00001

July 5, 2025

From: Elliot Nguyen, Lead Associate, Antitrust & Competition Practice Group, Calderwood & Harkness LLP, 1401 K Street NW, Suite 1200, Washington, D.C. 20005

To: Howard Bellamy, Responsible Partner, Antitrust & Competition Practice Group, Calderwood & Harkness LLP

cc: Elaine Forsythe, Billing Partner; Aaron Liu, Working Associate

Re: Legal Framework for Preliminary Injunction Under Section 13(b) of the FTC Act — Application to FTC's Motion for Preliminary Injunction Against Cascade Retail Holdings Inc.'s Proposed Acquisition of Pinnacle Market Group Inc.

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I. Executive Summary

This memorandum surveys the legal standard governing the Federal Trade Commission's application for a preliminary injunction under Section 13(b) of the FTC Act, 15 U.S.C. § 53(b), to block Cascade Retail Holdings Inc.'s ("Cascade" or "the Company") proposed $4.7 billion all-cash acquisition of Pinnacle Market Group Inc. ("Pinnacle"). The purpose of this analysis is to inform our opposition strategy and to provide an assessment of the relative strength of each party's position under the governing legal framework.

The FTC filed its district court complaint on June 23, 2025, assigned Docket No. 2:25-cv-01087-RAJ, before the Honorable Richard A. Johannsen in the United States District Court for the Western District of Washington, Seattle Division. The district court complaint was filed simultaneously with the Commission's administrative complaint, FTC Docket No. 9438, which was filed on June 20, 2025. The Commission authorized the complaint and litigation by a 3–2 vote, a division that signals meaningful internal disagreement on the merits of the Commission's theory and may prove significant in our advocacy before Judge Johannsen.

The preliminary injunction evidentiary hearing is currently set for September 8, 2025, with an estimated duration of five court days. Cascade's opposition brief is due August 11, 2025, and the FTC's reply is due August 25, 2025. These dates impose significant time constraints on the development of our expert reports, witness preparation, and demonstrative exhibits.

Summary Conclusion: The Section 13(b) standard, while more favorable to the FTC than the traditional four-factor preliminary injunction test applied in private litigation, is not a rubber stamp. The FTC must demonstrate a likelihood that the proposed transaction violates Section 7 of the Clayton Act, and the court retains meaningful discretion to weigh the equities. In this case, several factors in the equities analysis — including the $282 million reverse termination fee payable by Cascade upon regulatory failure, the March 14, 2026 outside date (extendable to June 14, 2026 only if the sole unsatisfied closing condition is antitrust clearance), the procompetitive efficiencies that would be lost if the transaction is enjoined, and the strength of Cascade's substantive defenses on market definition and competitive effects — counsel in favor of denying the injunction. We estimate the FTC's probability of prevailing on its preliminary injunction motion at approximately 35–45%, providing Cascade with a meaningful opportunity to defeat the motion if our defense is executed effectively.

II. Background: The Transaction and the FTC's Challenge

A. The Proposed Transaction

Cascade Retail Holdings Inc., a Delaware corporation headquartered at 2200 Westlake Avenue North, Suite 3400, Seattle, Washington 98109 (Nasdaq: CSRT; market capitalization approximately $41.2 billion as of June 27, 2025), entered into an Agreement and Plan of Merger dated March 14, 2025 (the "Merger Agreement") to acquire one hundred percent of the outstanding common stock of Pinnacle Market Group Inc., a Delaware corporation headquartered at 500 East 6th Street, Suite 800, Austin, Texas 78701 (Nasdaq: PMGI), in an all-cash reverse triangular merger to be effected through CRH Merger Sub Inc., a wholly owned subsidiary of Cascade formed solely for the purpose of the transaction.

The aggregate merger consideration is approximately $4.7 billion, calculated as $26.85 per share multiplied by 175,047,319 shares of Pinnacle common stock outstanding. The per-share consideration represents a premium of approximately 20.4% over Pinnacle's unaffected closing share price of $22.30 on March 7, 2025, the last trading day prior to market speculation regarding a potential transaction.

The transaction is financed through a combination of $1.9 billion from Cascade's existing cash on hand and a $2.8 billion senior secured Term Loan B facility provided by Whitmore National Bank, N.A. The commitment letter for the Term Loan B facility is dated March 12, 2025, and bears reference number CRH-WNB-2025-TLB. The financing is fully committed, with no financing condition to closing, and the commitment is subject only to customary conditions including the absence of a material adverse effect and accuracy of specified representations.

The transaction was publicly announced on March 17, 2025, via a Form 8-K filing by Cascade with the Securities and Exchange Commission. Pinnacle filed its Definitive Proxy Statement on Schedule 14A with the SEC on April 28, 2025, and Pinnacle shareholders approved the transaction at a special meeting of shareholders held on June 5, 2025.

The parties submitted their Hart-Scott-Rodino Premerger Notification filings on April 2, 2025 (Transaction No. HSR-20250402-0347). The FTC issued a Second Request for Additional Information and Documentary Material on May 7, 2025, under File No. 251-0089. Cascade and Pinnacle certified substantial compliance with the Second Request on June 10, 2025.

The Merger Agreement contains the following key termination provisions relevant to this litigation:

• Reverse Termination Fee: $282 million (approximately 6% of aggregate deal value), payable by Cascade to Pinnacle upon termination of the Merger Agreement due to the failure to obtain required antitrust clearances or the imposition of a governmental order enjoining the transaction.

• Company Termination Fee: $164.5 million (approximately 3.5% of aggregate deal value), payable by Pinnacle to Cascade in the event Pinnacle terminates the Merger Agreement to accept a superior proposal.

• Outside Date: March 14, 2026 (the twelve-month anniversary of the Merger Agreement), with a single three-month extension to June 14, 2026, available only if, as of the initial outside date, the sole unsatisfied closing condition is the receipt of required antitrust clearances (including the expiration or termination of the HSR waiting period and the absence of any governmental order enjoining the transaction).

These termination provisions are of critical importance to our preliminary injunction defense, as they establish the concrete timeline within which the transaction must be consummated and the quantifiable financial harm that Cascade will suffer if the transaction is enjoined and ultimately cannot close.

B. Cascade's Business

Cascade Retail Holdings Inc. was founded in 2003 and has grown to become a leading omnichannel retailer in the United States. Cascade operates across three principal business segments: (1) approximately 340 brick-and-mortar retail locations spanning 38 states; (2) CascadeDirect.com, a direct-to-consumer e-commerce platform; and (3) CascadeMarket, a third-party seller marketplace launched on June 1, 2019.

For fiscal year 2024 (ending January 31, 2025), Cascade reported total consolidated revenue of $28.6 billion across all three segments. The e-commerce and marketplace segments generated combined revenue of approximately $9.3 billion, reflecting the Company's ongoing strategic shift toward digital commerce. The CascadeMarket third-party marketplace generated $3.1 billion in gross merchandise volume ("GMV"), with approximately 42,000 active sellers transacting on the platform during the fiscal year. Marketplace services revenue — consisting primarily of referral fees, fulfillment fees, and advertising services — totaled $527 million, reflecting an effective take rate of approximately 17%.

A distinguishing feature of Cascade's business, and one that is central to the procompetitive rationale for the proposed acquisition, is its nationwide fulfillment network. Cascade operates 22 warehouses and distribution centers across the United States, providing end-to-end logistics services including warehousing, pick-and-pack, shipping, and returns processing. This physical fulfillment infrastructure is available to CascadeMarket sellers through the Company's "Cascade Fulfilled" program and represents a significant competitive advantage that few pure-play marketplace platforms can replicate.

C. Pinnacle's Business

Pinnacle Market Group Inc. was founded in 2014 by Rajiv Chandravar and Lena Kowalski with the goal of creating an online marketplace platform connecting independent sellers with consumers across a range of product categories, including home goods, artisanal products, specialty foods, fashion, and electronics. Pinnacle completed its initial public offering on September 18, 2020, listing on the Nasdaq exchange under the ticker symbol PMGI.

For fiscal year 2024 (ending December 31, 2024), Pinnacle reported $11.4 billion in gross merchandise volume across its platform, with approximately 185,000 active sellers. Pinnacle's net revenue for the period was $1.82 billion, reflecting a take rate of approximately 16% — slightly below Cascade's CascadeMarket take rate of 17% and below the industry average for the largest platform players. Prior to the public announcement of the proposed acquisition, Pinnacle's market capitalization was approximately $3.9 billion, reflecting investor concerns about the Company's decelerating growth trajectory and increasing seller attrition, factors that are central to Cascade's weakening-competitor defense.

Pinnacle's platform is primarily digital; unlike Cascade, Pinnacle does not operate its own physical fulfillment infrastructure. Pinnacle sellers are generally responsible for their own shipping and fulfillment, although Pinnacle offers a "Pinnacle Shipping Partners" program that provides negotiated carrier rates. The absence of an integrated fulfillment network is a key strategic limitation that the proposed acquisition is designed to address by providing Pinnacle sellers with access to Cascade's 22-warehouse network.

D. The FTC's Challenge

The Federal Trade Commission filed its administrative complaint on June 20, 2025, assigned Docket No. 9438, alleging that the proposed acquisition of Pinnacle by Cascade would violate Section 7 of the Clayton Act, 15 U.S.C. § 18, and Section 5 of the FTC Act, 15 U.S.C. § 45. Three days later, on June 23, 2025, the FTC filed its complaint for a temporary restraining order and preliminary injunction in the United States District Court for the Western District of Washington, assigned Case No. 2:25-cv-01087-RAJ, before the Honorable Richard A. Johannsen.

The Commission authorized the filing by a vote of 3–2. The narrow margin of the vote is noteworthy and reflects internal division on the strength of the FTC's competitive theory. While the identity of the dissenting Commissioners and the content of any dissenting statements are relevant to our broader advocacy, the bare fact of a 3–2 vote is itself indicative that reasonable minds within the Commission disagreed on the merits of the case.

The FTC's litigation team is led by Claire Dunmore, Lead Trial Attorney in the Bureau of Competition's Mergers IV Division, and includes Samuel Ortega (Senior Trial Counsel), Rebecca Yun (Staff Attorney), and Dr. Nathaniel Hargrove, a staff economist in the Bureau of Economics.

The FTC's complaint alleges a relevant product market defined as "online marketplace platform services for third-party sellers in the United States." This market definition is central to the FTC's theory of harm and, as discussed in detail below, is the principal vulnerability in the Commission's case. Within this alleged market, the FTC ascribes the following shares based on gross merchandise volume:

Based on these market share figures, the FTC's complaint alleges a pre-merger Herfindahl-Hirschman Index ("HHI") of 2,361, a post-merger HHI of 2,856, and a delta (change in HHI) of 495. See FTC Complaint ¶¶ 42, 47. Under the 2023 Merger Guidelines, a post-merger HHI above 2,500 with a delta exceeding 200 is presumed to create a significant risk to competition.

The FTC's theory of competitive harm contends that the merger would eliminate head-to-head competition between two of four significant marketplace platforms, giving the merged firm undue leverage over third-party sellers through increased take rates, reduced seller services, and diminished innovation incentives. The complaint further alleges a trend toward concentration in the online marketplace platform space that the proposed transaction would accelerate.

Additionally, the Independent Online Sellers Alliance ("IOSA"), a trade association representing independent sellers on various online marketplace platforms, has moved to intervene in the district court action on behalf of the FTC. IOSA is represented by Galloway & Peck LLP, with Martina Galloway serving as lead counsel. Cascade has filed an opposition to IOSA's motion to intervene, and the motion remains pending before Judge Johannsen.

E. Cascade's Principal Defenses (Overview)

Cascade intends to mount a comprehensive defense against the FTC's preliminary injunction motion. The principal defensive theories, each of which is summarized here and discussed in greater detail in the analysis sections below, are as follows:

Market Definition Challenge. Cascade will argue that the FTC's proposed relevant market — "online marketplace platform services for third-party sellers in the United States" — is artificially narrow and excludes significant competitive alternatives that discipline marketplace platform pricing and behavior. The relevant market should be defined as "all e-commerce retail," encompassing direct-to-consumer e-commerce, social commerce platforms, hybrid retail models, and third-party marketplace platforms. Total United States e-commerce GMV in 2024 was approximately $757 billion. Within this properly defined market, the combined entity's share is approximately 7.3% (including Cascade's direct-to-consumer e-commerce sales) or approximately 1.9% (marketplace GMV only) — far below any threshold at which a structural presumption of anticompetitive effects would arise.

Procompetitive Efficiencies. The transaction will generate substantial, verifiable, and merger-specific efficiencies of approximately $340 million annually by Year 3 post-closing. These efficiencies consist of approximately $195 million in logistics and fulfillment savings derived from integrating Pinnacle's 185,000 sellers into Cascade's 22-warehouse nationwide fulfillment network, and approximately $145 million in technology and platform synergies from the consolidation of duplicative technology infrastructure and the integration of complementary platform capabilities.

Ease of Entry and Expansion. The online marketplace platform market is characterized by low barriers to entry and ongoing new entry. Brevity Social Commerce launched in 2023 and Trove Marketplace launched in 2024, demonstrating that new competitors continue to enter the space. Additionally, social commerce platforms, direct-to-consumer website builders, and aggregator platforms provide sellers with multiple alternative channels that constrain marketplace platform behavior.

Weakening Competitor. Pinnacle's competitive trajectory is declining. Pinnacle's GMV growth has decelerated from 28% year-over-year in 2022 to 9% year-over-year in 2024. Seller churn has increased from 12% in 2022 to 21% in 2024. While Pinnacle likely does not satisfy the strict requirements of the failing-firm defense (as it is not on the verge of insolvency), its weakening competitive significance diminishes the merger's potential to lessen competition.

Expert Analysis. Cascade has retained Dr. Priya Ramanathan of Brindoval Analytics LLC to provide expert testimony on market definition, competitive effects, and efficiencies. Dr. Ramanathan's analysis will rebut the testimony of the FTC's expert, Dr. Wallace Keenan of Thornfield Research Group, and will support Cascade's broader market definition and procompetitive theories.

III. The Statutory Framework: Section 13(b) of the FTC Act

A. Text of Section 13(b) (15 U.S.C. § 53(b))

Section 13(b) of the Federal Trade Commission Act, codified at 15 U.S.C. § 53(b), provides the statutory authority under which the FTC seeks to enjoin the proposed transaction. The relevant portion of Section 13(b) provides, in pertinent part:

"Whenever the Commission has reason to believe—

(1) that any person, partnership, or corporation is violating, or is about to violate, any provision of law enforced by the Federal Trade Commission, and

(2) that the enjoining thereof pending the completion of the Commission's proceeding would be in the interest of the public—

the Commission by any of its attorneys designated by it for such purpose may bring suit in a district court of the United States to enjoin any such act or practice. Upon a proper showing that, weighing the equities and considering the Commission's likelihood of ultimate success, such action would be in the public interest, and after notice to the defendant, a temporary restraining order or a preliminary injunction may be granted without bond . . . ."

Several features of this statutory text warrant emphasis. First, the statute authorizes the FTC to seek injunctive relief whenever it has "reason to believe" that a party "is violating, or is about to violate" any provision of law enforced by the Commission. In the merger context, the relevant substantive provision is Section 7 of the Clayton Act, 15 U.S.C. § 18, which the FTC enforces through both its administrative process and federal court proceedings. Because the proposed transaction has not yet been consummated, the FTC's complaint alleges that Cascade "is about to violate" Section 7 by consummating a transaction the effect of which may be substantially to lessen competition.

Second, the statute establishes a two-part predicate for injunctive relief: the court must find both that there is a "likelihood of ultimate success" for the Commission and that "weighing the equities," the injunction "would be in the public interest." The use of the word "shall" in connection with a "proper showing" has been interpreted by courts as conferring a degree of statutory entitlement upon the FTC once the proper showing is made, but the FTC must still satisfy both prongs.

Third, the statute expressly provides that the preliminary injunction "may be granted without bond." This provision relieves the FTC of the typical requirement that a movant post a bond to compensate the enjoined party for damages suffered if the injunction is later determined to have been improvidently granted. This is significant in the present case because the absence of a bond requirement means that Cascade has no recourse to recover the substantial damages it would incur from an injunction — including the potential triggering of the $282 million reverse termination fee — even if the FTC ultimately fails to prove its case in the administrative proceeding.

Fourth, the statute requires that the FTC first file an administrative complaint before seeking injunctive relief in federal court. Here, the FTC satisfied this prerequisite by filing its administrative complaint on June 20, 2025, Docket No. 9438, three days before filing the district court action. The administrative complaint initiates the Commission's internal adjudicatory process before an Administrative Law Judge, which will proceed in parallel with the district court injunction proceedings.

B. Relationship to Section 7 of the Clayton Act

Section 7 of the Clayton Act, 15 U.S.C. § 18, provides the substantive legal standard that the FTC must ultimately establish in its administrative proceeding and that forms the basis for the likelihood-of-success analysis in the preliminary injunction proceeding. Section 7 prohibits any acquisition of stock or assets where "the effect of such acquisition may be substantially to lessen competition, or to tend to create a monopoly" in any line of commerce or in any section of the country.

The FTC enforces Section 7 through its administrative adjudicatory process, in which an Administrative Law Judge conducts an evidentiary hearing and issues an initial decision, subject to review by the full Commission. When the FTC determines that a merger under review poses an imminent threat to competition and that administrative proceedings alone would be insufficient to prevent the consummation of the transaction, the Commission may invoke Section 13(b) to seek a preliminary injunction in federal district court to maintain the status quo — that is, to prevent the parties from consummating their transaction — pending the completion of the administrative proceeding.

A critical feature of Section 7 is its "incipiency" standard. Congress enacted Section 7 with the express intent to arrest anticompetitive mergers "in their incipiency," before competitive harm has actually materialized. As the Supreme Court explained in Brown Shoe Co. v. United States, 370 U.S. 294, 317–18 (1962), and United States v. Philadelphia National Bank, 374 U.S. 321, 362 (1963), the government need not prove that a merger will certainly lessen competition; rather, it need only demonstrate that the merger "may" do so. This probabilistic standard reflects Congress's judgment that preventing anticompetitive consolidation before the fact is preferable to attempting to restore competition after the fact, when industry structures have already been altered and the damage to competitive dynamics may be irreversible.

The incipiency standard has significant implications for the preliminary injunction analysis. It means that the FTC's burden at the administrative trial is itself a probabilistic one — the Commission need not prove actual competitive harm, but only a reasonable probability of competitive harm. When the court evaluates the FTC's "likelihood of ultimate success" in the administrative proceeding for purposes of Section 13(b), it is therefore assessing the FTC's likelihood of proving a reasonable probability of competitive harm — a double layer of probability that theoretically makes the FTC's burden at the preliminary injunction stage lighter still. However, as discussed in Section IV below, courts have not uniformly interpreted this compounded standard as a virtual entitlement to injunctive relief, and the Ninth Circuit's approach provides meaningful opportunity for defendants to contest the FTC's showing.

C. Procedural Posture: Dual-Track Proceeding

The present litigation is a dual-track proceeding, a procedural structure that is standard in FTC merger challenges but warrants careful attention because of its implications for the effective outcome of the case. In the dual-track model, the FTC simultaneously pursues two parallel proceedings: (1) an administrative complaint before an FTC Administrative Law Judge, which is the vehicle for the Commission's ultimate adjudication of the merits of the Section 7 claim; and (2) a complaint in federal district court under Section 13(b), seeking a preliminary injunction to prevent the parties from consummating the transaction during the pendency of the administrative proceeding.

The district court's role in this dual-track structure is limited but decisive. The court does not adjudicate the ultimate merits of the Section 7 claim; that determination is reserved for the Commission's administrative process. Rather, the court's function is to determine whether the FTC has made a sufficient showing of likelihood of success and equitable considerations to warrant an injunction maintaining the status quo — i.e., preventing the parties from closing the merger — while the administrative process runs its course.

The practical effect of this structure, however, is far more consequential than the limited nature of the court's inquiry might suggest. If the district court grants a preliminary injunction, the transaction is effectively enjoined for the duration of the administrative proceeding. FTC administrative proceedings in merger cases are lengthy; the administrative trial alone typically consumes several months, and the Commission's review of the ALJ's initial decision adds additional time. During this period, the parties are prevented from consummating their transaction, and the merger agreement's outside date continues to run.

This dynamic is directly relevant to the present case. The Merger Agreement provides for an outside date of March 14, 2026, with a single three-month extension to June 14, 2026, available only if the sole unsatisfied closing condition at the initial outside date is the receipt of required antitrust clearances. If the court enters a preliminary injunction following the September 8, 2025 evidentiary hearing — with a decision likely issued in October 2025 at the earliest — the parties would have, at most, approximately seven to eight months before the extended outside date expires on June 14, 2026. That period is almost certainly insufficient for the completion of the FTC's administrative trial and any subsequent appeal to the full Commission, let alone further judicial review. As a practical matter, therefore, a preliminary injunction in this case would almost certainly terminate the transaction, either because the outside date would expire before the administrative process concludes or because the prolonged uncertainty and costs of continued litigation would cause one or both parties to exercise their termination rights.

This practical reality is a critical consideration in the equities analysis, as discussed in Sections IV.C and VI.B below.

IV. The Section 13(b) Preliminary Injunction Standard

A. The Two-Prong Test

Under established circuit authority, a Section 13(b) preliminary injunction requires the FTC to demonstrate two things: first, a likelihood that the FTC will ultimately succeed on the merits in its administrative proceeding — that is, that the proposed transaction violates Section 7 of the Clayton Act; and second, that the equities weigh in favor of injunctive relief. This two-prong framework is derived from the statutory text, which requires "a proper showing that, weighing the equities and considering the Commission's likelihood of ultimate success, such action would be in the public interest." 15 U.S.C. § 53(b).

The two-prong Section 13(b) test is distinct from, and generally more favorable to the government than, the traditional four-factor preliminary injunction standard applied in private litigation. Under the traditional test, a movant must independently establish: (1) a likelihood of success on the merits; (2) a likelihood of irreparable harm absent an injunction; (3) that the balance of hardships tips in the movant's favor; and (4) that an injunction would serve the public interest. See Winter v. Natural Resources Defense Council, Inc., 555 U.S. 7, 20 (2008). The Section 13(b) standard collapses and simplifies this inquiry, particularly with respect to irreparable harm, as discussed in Section IV.D below.

While the two-prong test is facially straightforward, courts have applied its constituent elements with varying degrees of rigor, creating a body of precedent that provides opportunities for both the FTC and the defendants to argue for more or less demanding interpretations. The following subsections address each prong in detail.

B. Prong One: Likelihood of Success on the Merits

The first prong — likelihood of success on the merits — is the heart of the Section 13(b) analysis and the primary battleground in any contested merger injunction proceeding. Courts have interpreted this prong with varying degrees of rigor, and the precise formulation of the standard differs somewhat across the federal circuits.

At one end of the spectrum, some courts have adopted a relatively deferential formulation requiring only that the FTC raise "questions going to the merits so serious, substantial, difficult, and doubtful as to make them fair ground for thorough investigation, study, deliberation and determination." See FTC v. H.J. Heinz Co., 246 F.3d 708, 714–15 (D.C. Cir. 2001); FTC v. Whole Foods Market, Inc., 548 F.3d 1028, 1035 (D.C. Cir. 2008). Under this formulation — sometimes referred to as the "serious questions" standard — the FTC need not demonstrate that it will probably prevail in the administrative proceeding; it need only show that the case presents sufficiently serious questions to warrant maintaining the status quo while the administrative process unfolds. This standard is considerably lower than the traditional probability-of-success requirement and reflects a judicial recognition that the district court's role in a Section 13(b) proceeding is not to resolve the ultimate merits but rather to determine whether the case is sufficiently meritorious to justify preserving the status quo.

At the other end of the spectrum, other courts have required the FTC to demonstrate a "reasonable probability" of ultimate success in the administrative proceeding. Under this formulation, the FTC must present evidence sufficient to persuade the court that the Commission's case has a reasonable probability of prevailing — a more demanding standard than the "serious questions" test, although still less onerous than the traditional "probability of success" requirement applied in private litigation.

The Ninth Circuit, which governs the Western District of Washington, applies a standard that is closer to the "serious questions" formulation but that nevertheless requires a meaningful evaluation of the merits. The court does not simply rubber-stamp the FTC's showing; it independently assesses the evidence and determines whether the FTC has raised sufficiently serious questions to justify injunctive relief. This means that the court will examine the FTC's market definition, its competitive effects analysis, and the defendants' defenses and rebuttal evidence, and will form its own preliminary assessment of the strength of the FTC's case.

The practical import for our case is significant. Even under the more deferential "serious questions" standard, Judge Johannsen must assess the FTC's market definition, its theory of competitive harm, and the strength of the defendants' defenses — including Cascade's broader market definition, its efficiencies evidence, its ease-of-entry evidence, and its weakening-competitor evidence. The FTC cannot rely on bare allegations or conclusory assertions; it must present evidence that supports its prima facie case and withstands scrutiny under cross-examination at the evidentiary hearing. The FTC's narrow market definition — "online marketplace platform services for third-party sellers in the United States" — is the principal vulnerability in its case, and the 3–2 Commission vote itself signals that reasonable minds within the Commission disagreed on whether the case meets even the "reason to believe" standard required to authorize the filing. These factors create meaningful opportunities to challenge the strength of the FTC's likelihood-of-success showing.

C. Prong Two: Balancing the Equities

The second prong of the Section 13(b) analysis requires the court to weigh the equities and determine whether injunctive relief would be in the public interest. Even if the FTC demonstrates a likelihood of success on the merits, the court retains discretion to deny a preliminary injunction if the equities weigh against relief. This equitable inquiry is not merely a pro forma consideration; it is an independent requirement of the statute, and courts have denied injunctions on equitable grounds even where the FTC made a threshold showing on the merits.

In conducting the equities analysis, courts consider a range of factors, including:

(a) The public interest in effective antitrust enforcement. Courts recognize that the enforcement of the antitrust laws serves the public interest by preserving competitive markets. The FTC will argue that the public interest favors an injunction to prevent the consummation of an anticompetitive merger that would harm competition in the online marketplace platform market. This factor generally weighs in the FTC's favor, but its weight depends on the strength of the FTC's merits showing — a weak case on the merits diminishes the public interest in enjoining the transaction.

(b) The private interests of the merging parties in completing a lawful transaction. Merging parties have a legitimate interest in consummating a lawful business transaction that they have negotiated, financed, and (in this case) obtained shareholder approval for. This interest is particularly weighty where, as here, the transaction generates substantial procompetitive efficiencies and involves a significant financial commitment.

(c) The impact on third parties. Courts consider the effect of an injunction on third parties, including in this case the sellers on both platforms, consumers, employees, and shareholders. These effects can cut in either direction depending on the evidence presented.

(d) The practical effect of the injunction on the underlying transaction. This factor is of particular importance in merger cases. Where a merger agreement contains an outside date, courts have recognized that a preliminary injunction may effectively terminate the transaction by preventing consummation within the contractual deadline. When this is the case, the court must consider whether the injunction's practical effect — permanent termination of the transaction — is proportionate to the strength of the FTC's merits showing.

The relevance of transaction deadlines to the equities analysis deserves particular emphasis. Where a preliminary injunction will effectively kill the deal, the court's equitable discretion takes on heightened significance. Courts have recognized that the extraordinary practical consequence of an injunction — the death of a multi-billion-dollar transaction — requires a correspondingly strong showing on the merits. Where the FTC's case is closely contested, as it is here, the deal-killing effect of an injunction weighs against granting relief because the defendants would suffer irreversible harm (loss of the transaction) even if the FTC ultimately fails to prove its case in the administrative proceeding.

In our case, the outside date of March 14, 2026, with the three-month extension to June 14, 2026, means that a preliminary injunction entered after the September 8, 2025 hearing would leave at most seven to eight months before the extended outside date — a period almost certainly insufficient for the administrative trial and any subsequent appellate proceedings. The practical effect of a preliminary injunction would therefore be to kill the transaction outright.

The relevance of the reverse termination fee is also significant. Cascade is contractually obligated to pay Pinnacle a $282 million reverse termination fee if the merger fails due to regulatory blockage. This substantial financial exposure constitutes a concrete, quantifiable harm to Cascade that the court must weigh in the equities analysis. The absence of a bond requirement under Section 13(b) means that Cascade has no mechanism to recover this sum from the FTC if the injunction is later dissolved or if the FTC ultimately fails to prove its case. The irreversible nature of this harm underscores the importance of the equities prong as a meaningful check on the FTC's statutory advantages.

D. Distinction from the Traditional Four-Factor Preliminary Injunction Test

The differences between the Section 13(b) standard and the traditional four-factor preliminary injunction test warrant explicit analysis, because a precise understanding of these distinctions is essential to framing our opposition strategy.

Under the traditional test, applied in private antitrust suits and other contexts not governed by Section 13(b), a movant seeking a preliminary injunction must independently demonstrate each of four elements: (i) a likelihood of success on the merits; (ii) a likelihood of irreparable harm in the absence of preliminary relief; (iii) that the balance of hardships tips in the movant's favor; and (iv) that an injunction is in the public interest. See Winter, 555 U.S. at 20. Each element must be established, and the failure to satisfy any one of them is ordinarily fatal to the motion.

Under Section 13(b), the FTC is generally relieved of the independent requirement to demonstrate irreparable harm. The statute itself is understood to embody a legislative determination that an injunction preserving the status quo pending the Commission's administrative proceedings serves the public interest. Courts have recognized that the FTC need not make the same showing of imminent, irreparable harm that a private plaintiff would be required to make in order to obtain preliminary injunctive relief. See FTC v. Sysco Corp., 113 F. Supp. 3d 1, 22 (D.D.C. 2015); FTC v. H.J. Heinz Co., 246 F.3d at 726. This statutory advantage is significant because demonstrating irreparable harm — i.e., that the threatened injury is imminent, concrete, and not compensable by money damages — is often the most demanding element of the traditional four-factor test and frequently the ground on which private preliminary injunction motions fail.

However, the FTC's statutory advantage does not eliminate the equities inquiry entirely. As discussed above, the court must still weigh the balance of equities and the public interest, and the defendants can introduce affirmative evidence on those factors. The equities prong of the Section 13(b) analysis thus preserves a meaningful, if somewhat narrower, version of the balance-of-hardships and public-interest inquiries that would apply under the traditional four-factor test.

Key Takeaway for Our Defense. While we cannot force the FTC to demonstrate irreparable harm in the traditional sense, we can — and should — vigorously argue that the equities weigh against injunctive relief. The equities inquiry provides the appropriate vehicle for presenting the following arguments:

(a) The FTC's case rests on a narrow, internally contested market definition that was authorized by only a 3–2 Commission vote, undermining the strength of the merits showing and correspondingly reducing the weight of the public interest in enjoining the transaction;

(b) The transaction generates substantial, verifiable procompetitive efficiencies of $340 million per year that would be permanently lost if the transaction is enjoined and the outside date expires;

(c) Pinnacle is a weakening competitor whose declining trajectory means that the competitive landscape will be less affected by the transaction than the FTC's static market share analysis suggests; and

(d) The injunction would effectively terminate a $4.7 billion transaction, triggering a $282 million reverse termination fee and causing irreversible harm to Cascade, with no bond or other mechanism for Cascade to recover its losses if the FTC's case ultimately fails.

V. Key Precedent Analyzed

The following section analyzes the principal cases that will inform the court's application of the Section 13(b) standard to the facts of our case. We address cases likely to be cited by the FTC in support of its motion, as well as cases favorable to the defense, and identify the key points of distinction and analogy for each.

A. FTC v. H.J. Heinz Co., 246 F.3d 708 (D.C. Cir. 2001)

Facts and Holding. Heinz involved the proposed merger of H.J. Heinz Company and the Beech-Nut division of Milnot Holding Corporation, the second- and third-largest manufacturers of baby food in the United States. The leading firm, Gerber Products Company, held approximately 65% of the market. Heinz held approximately 17.4% and Beech-Nut approximately 15.4%, giving the combined entity a share of approximately 32.8% in a three-firm market. The FTC sought a preliminary injunction under Section 13(b), and the district court denied the motion, finding that the FTC had not demonstrated a likelihood of success because the two merging firms did not compete head-to-head in most markets. The D.C. Circuit reversed, holding that the FTC had established a prima facie case by demonstrating high post-merger concentration levels, and that the district court erred by failing to give appropriate weight to the structural presumption of anticompetitive effects arising from the HHI analysis.

Standard Articulated. The D.C. Circuit held that the FTC is entitled to a preliminary injunction if it demonstrates a "likelihood of success" in proving that the merger violates Section 7, giving significant weight to structural presumptions arising from market concentration data. Once the FTC establishes a prima facie case through market share and HHI data — specifically, by showing that the merger would significantly increase concentration in an already concentrated market — the burden shifts to the defendants to rebut the presumption of anticompetitive effects. The court further held that efficiencies claimed by the defendants must be "extraordinary" to justify a merger that is presumptively anticompetitive based on market structure.

The court endorsed a version of the "serious questions" standard, stating that the FTC need only "raise questions going to the merits so serious, substantial, difficult and doubtful as to make them fair ground for thorough investigation." Id. at 714–15. The court also emphasized that the FTC's burden at the preliminary injunction stage is less demanding than its ultimate burden at the administrative trial, because the district court's role is not to resolve the merits but to determine whether the case warrants maintenance of the status quo.

Relevance to Our Case. The FTC will almost certainly rely heavily on Heinz in its briefing and at the evidentiary hearing. The FTC's expected arguments based on Heinz include:

• The post-merger HHI of 2,856 with a delta of 495, as alleged in the FTC's complaint, exceeds the thresholds that the Heinz court considered sufficient to establish a structural presumption of anticompetitive effects.

• The elimination of head-to-head competition between Cascade and Pinnacle in the "online marketplace platform services" market parallels the elimination of competition between Heinz and Beech-Nut in the baby food market.

• The Heinz court's skepticism toward efficiencies defenses should apply with equal force here, particularly given the Heinz court's observation that efficiencies must be "extraordinary" to overcome a structural presumption.

Our Response. While Heinz is an important and influential decision, it is distinguishable from the present case in several critical respects:

First, the HHI figures cited by the FTC depend entirely on the Commission's improperly narrow market definition. If the relevant market is properly defined as "all e-commerce retail" — a market with total U.S. GMV of $757 billion in 2024 — the combined entity's share is approximately 7.3% (including Cascade's direct-to-consumer sales) or approximately 1.9% (marketplace GMV only), and HHI levels fall far below any presumptively anticompetitive threshold. The structural presumption on which Heinz relied simply does not arise under a properly defined market.

Second, the efficiencies at issue in Heinz were modest, poorly documented, and inadequately verified. The D.C. Circuit rejected them in part because the defendants' own documents did not support the claimed magnitude of savings and the efficiencies were not shown to be merger-specific. Our efficiencies of $340 million annually are substantially larger, more concrete, and more directly verifiable than those presented in Heinz. They are documented in Cascade's ordinary-course business records, supported by detailed integration plans, and tied to specific operational capabilities — most importantly, the integration of Pinnacle's 185,000 sellers into Cascade's 22-warehouse fulfillment network — that cannot be replicated absent the merger.

Third, and most fundamentally, Heinz involved a highly concentrated, mature, and stable market with only three competitors, verified high barriers to entry, and no significant prospect of new competition. The online marketplace platform market is, by contrast, dynamic, rapidly evolving, and subject to continuous new entry. Brevity Social Commerce launched in 2023, Trove Marketplace launched in 2024, and social commerce and direct-to-consumer platforms continue to proliferate. The competitive dynamics of a digital platform market bear little resemblance to the three-firm baby food market at issue in Heinz.

B. FTC v. Sysco Corp., 113 F. Supp. 3d 1 (D.D.C. 2015)

Facts and Holding. In Sysco, the FTC sought a preliminary injunction to block the proposed merger of Sysco Corporation and US Foods, Inc., the two largest broadline foodservice distributors in the United States. The district court granted the FTC's motion, finding that the FTC had demonstrated a likelihood of success in proving that the merger would substantially lessen competition in the national and local markets for broadline foodservice distribution. The court accepted the FTC's market definition, credited the FTC's evidence of high market shares and the elimination of head-to-head competition between the two largest players, and rejected the defendants' efficiencies defense as insufficiently merger-specific and not adequately verified.

Standard Applied. The Sysco court applied the "likelihood of ultimate success" standard and conducted a detailed, evidence-intensive analysis of market definition, competitive effects, and the defendants' asserted efficiencies. The court emphasized that it was required to make its own independent assessment of the evidence, rather than simply deferring to the FTC's judgment, and it engaged in a thorough evaluation of both sides' expert economic testimony. The court found that the structural presumption arising from the defendants' combined market shares was not rebutted by the efficiencies defense, in part because the claimed efficiencies were not sufficiently verified and in part because a significant portion of the claimed savings were not merger-specific — they could have been achieved through internal growth or alternative transactions.

Relevance to Our Case. The FTC may seek to analogize the present case to Sysco in several respects:

• The FTC may argue that, as in Sysco, the proposed merger eliminates competition between two significant rivals in a concentrated market, and that the elimination of this head-to-head competition is itself a cognizable competitive harm.

• The FTC may argue that Cascade's efficiencies defense suffers from the same infirmities as those rejected in Sysco — specifically, that the claimed savings are not merger-specific and are not adequately verified.

• The FTC may emphasize the Sysco court's willingness to credit the FTC's narrower market definition over the defendants' broader alternative.

Our Response. Sysco is distinguishable in several important respects:

First, the broadline foodservice distribution market at issue in Sysco was a mature, geographically segmented market with high switching costs, significant capital requirements for new entry, and limited prospects for competitive expansion by existing fringe players. The online marketplace platform market has none of these characteristics. Sellers and consumers multi-home across multiple platforms simultaneously, switching costs are minimal (sellers can list products on multiple platforms with negligible incremental effort), and new entry occurs continuously.

Second, the Sysco court's rejection of the defendants' efficiencies defense was based on specific findings that the claimed savings were not merger-specific — i.e., they could have been achieved through internal growth or alternative means. Our efficiencies are fundamentally different. The $195 million in logistics and fulfillment savings depend on integrating Pinnacle's 185,000 sellers into Cascade's physical 22-warehouse fulfillment network — a capability that Pinnacle lacks independently and cannot replicate without access to Cascade's infrastructure. The $145 million in technology and platform synergies arise from the consolidation of duplicative technology platforms — savings that, by definition, can only be achieved through a combination of the two firms' technology stacks. These efficiencies are merger-specific in the most literal sense: they require the merger.

Third, the combined market share in Sysco was substantially higher than in the present case, and the market structure — with two dominant players and a fringe of small competitors — was more susceptible to coordinated or unilateral anticompetitive effects. Here, even under the FTC's own narrow market definition, the combined entity's share of 38.3% would place it behind Vertex Commerce (35.7%), and Nomad Shops (14.6%) would remain a significant competitive constraint. The four-firm market structure post-merger (three significant players plus a competitive fringe) is materially different from the two-firm-plus-fringe structure in Sysco.

C. FTC v. Staples Inc., 190 F. Supp. 3d 100 (D.D.C. 2016)

Facts and Holding. In the second Staples case, the FTC sought and obtained a preliminary injunction blocking the proposed merger of Staples, Inc. and Office Depot, Inc. The court found that the FTC's narrow product market definition — business-to-business sales of office supplies by "office supply companies" — was supported by substantial evidence of competitive distinction between the products and services offered by office supply companies and those offered by other channels. The court found that the combined firm would hold in excess of 70% of the relevant market, creating an overwhelming structural presumption of anticompetitive effects.

Relevance to Our Case. Staples is distinguishable on several grounds:

First, the Staples court credited the FTC's narrow market definition because there was direct, concrete evidence of "competitive distinction" between office supply companies and other distribution channels. Customers of business-to-business office supply companies had specific purchasing needs — including national account pricing, dedicated sales representatives, tailored delivery logistics, and specialized product assortments — that were not adequately served by mass merchandisers, warehouse clubs, or online retailers. In our case, the evidence of competitive distinction between marketplace platforms and other e-commerce channels is significantly weaker. Sellers actively use direct-to-consumer websites, social commerce platforms, and hybrid retail models as alternatives to and complements for marketplace platforms. The boundaries between "marketplace" and "non-marketplace" e-commerce are blurred and permeable, with sellers routinely multi-homing across channels and consumers shopping interchangeably across platform types.

Second, the combined market share in Staples exceeded 70% under the court's market definition — nearly double the combined share alleged by the FTC in the present case (38.3%). The difference in magnitude is significant because the strength of the structural presumption is directly related to the level of market concentration. A combined share of 38.3% in a four-firm market with a leading competitor at 35.7% presents a fundamentally different competitive picture than a combined share exceeding 70% in a two-firm market.

D. FTC v. Tronox Ltd., 332 F. Supp. 3d 187 (D.D.C. 2018)

Facts and Holding. In Tronox, the FTC obtained a preliminary injunction blocking the acquisition of Cristal's North American titanium dioxide business by Tronox Limited. The court accepted the FTC's narrow product market definition — chloride-process titanium dioxide — and found that high concentration in the relevant market, combined with documentary evidence of competitive effects, established a likelihood of success. The court credited the FTC's evidence that the merging firms were close competitors and that the transaction would eliminate significant head-to-head competition.

Relevance to Our Case. The FTC will likely cite Tronox for the proposition that specialized or narrow product market definitions are cognizable under Section 7 even when broader substitution possibilities exist. The Tronox court credited the FTC's narrow market definition because industry participants, including customers and competitors, distinguished between chloride-process and sulfate-process titanium dioxide for specific applications, and supply-side substitution between the two processes was limited by capital requirements and technical constraints.

We should anticipate this argument and prepare a response emphasizing that the market dynamics in digital platform industries are fundamentally different from those in physical product manufacturing. Unlike the production of titanium dioxide using different chemical processes, where supply-side substitution requires substantial capital investment and technical retooling, the provision of e-commerce services across different platform models involves minimal technical barriers to substitution. A seller can list products on a marketplace platform, a direct-to-consumer website, and a social commerce platform simultaneously, using many of the same digital tools and fulfillment processes. The functional and economic distinction between "marketplace platform services" and other forms of e-commerce is far less clear-cut than the distinction between chloride-process and sulfate-process titanium dioxide.

E. FTC v. Penn State Hershey Medical Center, 838 F.3d 327 (3d Cir. 2016)

Facts and Holding. In Penn State Hershey, the Third Circuit reversed the district court's denial of a preliminary injunction and ordered that the FTC's motion be granted, blocking a proposed merger between two hospitals in the Harrisburg, Pennsylvania area. The case principally concerned geographic market definition; the district court had credited the defendants' argument for a broader geographic market, and the Third Circuit concluded that the district court erred by failing to give appropriate weight to the FTC's evidence supporting a narrower geographic market. The Third Circuit emphasized the structural presumption arising from high concentration in the properly defined geographic market and held that the defendants had not rebutted that presumption.

Relevance to Our Case. While Penn State Hershey is primarily a geographic-market case and arises in a different industry context, the FTC may cite it for the Third Circuit's broad endorsement of the structural presumption and its statement that the government's burden at the preliminary injunction stage is "lighter" than its burden at the merits stage. The FTC may also cite the Third Circuit's skepticism toward defendants' efforts to expand the relevant market beyond the boundaries suggested by the FTC's evidence.

We should note in response that Penn State Hershey is a Third Circuit decision and is not binding on the Western District of Washington, which sits within the Ninth Circuit. The Ninth Circuit applies a somewhat more nuanced approach to the Section 13(b) standard. Moreover, the geographic-market analysis at issue in Penn State Hershey — which turned on patient travel patterns and hospital referral data — involves a fundamentally different analytical framework than the product-market analysis at issue in our case.

F. Cases Favorable to Defendants

1. FTC v. RAG-Stiftung, No. 19-cv-2337 (D.D.C. 2020)

In RAG-Stiftung, the district court denied the FTC's motion for a preliminary injunction to block the acquisition of Evonik's hydrogen peroxide business by One Equity Partners, an affiliate of RAG-Stiftung. The court found that the FTC failed to demonstrate that its proposed market definition was correct, and that the defendants' rebuttal evidence on competitive dynamics — including evidence of significant competition from firms and products excluded from the FTC's proposed market — was persuasive. The court conducted a thorough and independent evaluation of the evidence and concluded that the FTC had not satisfied its burden of demonstrating a likelihood of success on the merits.

RAG-Stiftung is directly relevant to our case because it demonstrates that courts do deny Section 13(b) injunctions when the FTC's market definition is genuinely contested and the evidence does not clearly support the FTC's theory of competitive harm. The parallels between RAG-Stiftung and our case are significant: in both cases, the FTC advances a narrow market definition that excludes significant competitive alternatives; in both cases, the defendants present rebuttal evidence demonstrating that the excluded competitors impose meaningful competitive discipline; and in both cases, the Commission's own internal vote reflects division on the merits. The 3–2 Commission vote authorizing the present case — like the closely contested evidentiary record in RAG-Stiftung — underscores the debatable nature of the FTC's theory and supports the conclusion that the FTC has not demonstrated a sufficiently strong likelihood of success to justify the extraordinary relief of a preliminary injunction.

2. FTC v. Arch Coal Inc., 329 F. Supp. 2d 109 (D.D.C. 2004)

In Arch Coal, the district court denied the FTC's motion for a preliminary injunction to block the proposed acquisition of Triton Coal Company by Arch Coal, Inc. The court found that the FTC had not demonstrated a likelihood of success because the relevant market was more competitive than the FTC alleged and because entry by new competitors was likely. The court credited the defendants' evidence that potential new entrants could and would enter the market in response to any post-merger price increase, and concluded that the FTC's static market-share analysis did not adequately account for the dynamic competitive conditions in the relevant market.

Arch Coal directly supports Cascade's ease-of-entry argument. The online marketplace platform market has experienced recent and significant new entry: Brevity Social Commerce launched in 2023 and Trove Marketplace launched in 2024, both achieving meaningful seller acquisition in a short period. These entries demonstrate that barriers to entry in the marketplace platform space are low and that new competitive alternatives are readily available to sellers. If the court credits this evidence, it will undermine the FTC's structural presumption even under the FTC's own narrow market definition.

Furthermore, Arch Coal supports the broader proposition that static market-share data and HHI calculations, while relevant, do not tell the full competitive story. In dynamic, technology-driven markets, competitive conditions can shift rapidly, and the presence of recent entry and expansion is strong evidence that the market is more competitive than snapshot market shares would suggest. This principle applies with particular force to the online marketplace platform market, where technological innovation, low marginal costs of platform expansion, and the multi-homing behavior of both sellers and consumers create a competitive environment that is fundamentally different from the stable, concentrated markets in which the structural presumption has traditionally been applied.

VI. Application of the Standard to Our Case

Having established the governing legal framework and the relevant

PRIVILEGED AND CONFIDENTIAL — ATTORNEY WORK PRODUCT
MEMORANDUM
Matter: FTC v. Cascade Retail Holdings Inc. et al., Case No. 2:25-cv-01087-RAJ (W.D. Wash.)
Matter Number: 1038-00001
July 5, 2025
From: Elliot Nguyen, Lead Associate, Antitrust & Competition Practice Group, Calderwood & Harkness LLP, 1401 K Street NW, Suite 1200, Washington, D.C. 20005
To: Howard Bellamy, Responsible Partner, Antitrust & Competition Practice Group, Calderwood & Harkness LLP
cc: Elaine Forsythe, Billing Partner; Aaron Liu, Working Associate
Re: Legal Framework for Preliminary Injunction Under Section 13(b) of the FTC Act — Application to FTC's Motion for Preliminary Injunction Against Cascade Retail Holdings Inc.'s Proposed Acquisition of Pinnacle Market Group Inc.
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I. Executive Summary
This memorandum surveys the legal standard governing the Federal Trade Commission's application for a preliminary injunction under Section 13(b) of the FTC Act, 15 U.S.C. § 53(b), to block Cascade Retail Holdings Inc.'s ("Cascade" or "the Company") proposed $4.7 billion all-cash acquisition of Pinnacle Market Group Inc. ("Pinnacle"). The purpose of this analysis is to inform our opposition strategy and to provide an assessment of the relative strength of each party's position under the governing legal framework.
The FTC filed its district court complaint on June 23, 2025, assigned Docket No. 2:25-cv-01087-RAJ, before the Honorable Richard A. Johannsen in the United States District Court for the Western District of Washington, Seattle Division. The district court complaint was filed simultaneously with the Commission's administrative complaint, FTC Docket No. 9438, which was filed on June 20, 2025. The Commission authorized the complaint and litigation by a 3–2 vote, a division that signals meaningful internal disagreement on the merits of the Commission's theory and may prove significant in our advocacy before Judge Johannsen.
The preliminary injunction evidentiary hearing is currently set for September 8, 2025, with an estimated duration of five court days. Cascade's opposition brief is due August 11, 2025, and the FTC's reply is due August 25, 2025. These dates impose significant time constraints on the development of our expert reports, witness preparation, and demonstrative exhibits.
Summary Conclusion: The Section 13(b) standard, while more favorable to the FTC than the traditional four-factor preliminary injunction test applied in private litigation, is not a rubber stamp. The FTC must demonstrate a likelihood that the proposed transaction violates Section 7 of the Clayton Act, and the court retains meaningful discretion to weigh the equities. In this case, several factors in the equities analysis — including the $282 million reverse termination fee payable by Cascade upon regulatory failure, the March 14, 2026 outside date (extendable to June 14, 2026 only if the sole unsatisfied closing condition is antitrust clearance), the procompetitive efficiencies that would be lost if the transaction is enjoined, and the strength of Cascade's substantive defenses on market definition and competitive effects — counsel in favor of denying the injunction. We estimate the FTC's probability of prevailing on its preliminary injunction motion at approximately 35–45%, providing Cascade with a meaningful opportunity to defeat the motion if our defense is executed effectively.
II. Background: The Transaction and the FTC's Challenge
A. The Proposed Transaction
Cascade Retail Holdings Inc., a Delaware corporation headquartered at 2200 Westlake Avenue North, Suite 3400, Seattle, Washington 98109 (Nasdaq: CSRT; market capitalization approximately $41.2 billion as of June 27, 2025), entered into an Agreement and Plan of Merger dated March 14, 2025 (the "Merger Agreement") to acquire one hundred percent of the outstanding common stock of Pinnacle Market Group Inc., a Delaware corporation headquartered at 500 East 6th Street, Suite 800, Austin, Texas 78701 (Nasdaq: PMGI), in an all-cash reverse triangular merger to be effected through CRH Merger Sub Inc., a wholly owned subsidiary of Cascade formed solely for the purpose of the transaction.
The aggregate merger consideration is approximately $4.7 billion, calculated as $26.85 per share multiplied by 175,047,319 shares of Pinnacle common stock outstanding. The per-share consideration represents a premium of approximately 20.4% over Pinnacle's unaffected closing share price of $22.30 on March 7, 2025, the last trading day prior to market speculation regarding a potential transaction.
The transaction is financed through a combination of $1.9 billion from Cascade's existing cash on hand and a $2.8 billion senior secured Term Loan B facility provided by Whitmore National Bank, N.A. The commitment letter for the Term Loan B facility is dated March 12, 2025, and bears reference number CRH-WNB-2025-TLB. The financing is fully committed, with no financing condition to closing, and the commitment is subject only to customary conditions including the absence of a material adverse effect and accuracy of specified representations.
The transaction was publicly announced on March 17, 2025, via a Form 8-K filing by Cascade with the Securities and Exchange Commission. Pinnacle filed its Definitive Proxy Statement on Schedule 14A with the SEC on April 28, 2025, and Pinnacle shareholders approved the transaction at a special meeting of shareholders held on June 5, 2025.
The parties submitted their Hart-Scott-Rodino Premerger Notification filings on April 2, 2025 (Transaction No. HSR-20250402-0347). The FTC issued a Second Request for Additional Information and Documentary Material on May 7, 2025, under File No. 251-0089. Cascade and Pinnacle certified substantial compliance with the Second Request on June 10, 2025.
The Merger Agreement contains the following key termination provisions relevant to this litigation:
•  Reverse Termination Fee: $282 million (approximately 6% of aggregate deal value), payable by Cascade to Pinnacle upon termination of the Merger Agreement due to the failure to obtain required antitrust clearances or the imposition of a governmental order enjoining the transaction.
•  Company Termination Fee: $164.5 million (approximately 3.5% of aggregate deal value), payable by Pinnacle to Cascade in the event Pinnacle terminates the Merger Agreement to accept a superior proposal.
•  Outside Date: March 14, 2026 (the twelve-month anniversary of the Merger Agreement), with a single three-month extension to June 14, 2026, available only if, as of the initial outside date, the sole unsatisfied closing condition is the receipt of required antitrust clearances (including the expiration or termination of the HSR waiting period and the absence of any governmental order enjoining the transaction).
These termination provisions are of critical importance to our preliminary injunction defense, as they establish the concrete timeline within which the transaction must be consummated and the quantifiable financial harm that Cascade will suffer if the transaction is enjoined and ultimately cannot close.
B. Cascade's Business
Cascade Retail Holdings Inc. was founded in 2003 and has grown to become a leading omnichannel retailer in the United States. Cascade operates across three principal business segments: (1) approximately 340 brick-and-mortar retail locations spanning 38 states; (2) CascadeDirect.com, a direct-to-consumer e-commerce platform; and (3) CascadeMarket, a third-party seller marketplace launched on June 1, 2019.
For fiscal year 2024 (ending January 31, 2025), Cascade reported total consolidated revenue of $28.6 billion across all three segments. The e-commerce and marketplace segments generated combined revenue of approximately $9.3 billion, reflecting the Company's ongoing strategic shift toward digital commerce. The CascadeMarket third-party marketplace generated $3.1 billion in gross merchandise volume ("GMV"), with approximately 42,000 active sellers transacting on the platform during the fiscal year. Marketplace services revenue — consisting primarily of referral fees, fulfillment fees, and advertising services — totaled $527 million, reflecting an effective take rate of approximately 17%.
A distinguishing feature of Cascade's business, and one that is central to the procompetitive rationale for the proposed acquisition, is its nationwide fulfillment network. Cascade operates 22 warehouses and distribution centers across the United States, providing end-to-end logistics services including warehousing, pick-and-pack, shipping, and returns processing. This physical fulfillment infrastructure is available to CascadeMarket sellers through the Company's "Cascade Fulfilled" program and represents a significant competitive advantage that few pure-play marketplace platforms can replicate.
C. Pinnacle's Business
Pinnacle Market Group Inc. was founded in 2014 by Rajiv Chandravar and Lena Kowalski with the goal of creating an online marketplace platform connecting independent sellers with consumers across a range of product categories, including home goods, artisanal products, specialty foods, fashion, and electronics. Pinnacle completed its initial public offering on September 18, 2020, listing on the Nasdaq exchange under the ticker symbol PMGI.
For fiscal year 2024 (ending December 31, 2024), Pinnacle reported $11.4 billion in gross merchandise volume across its platform, with approximately 185,000 active sellers. Pinnacle's net revenue for the period was $1.82 billion, reflecting a take rate of approximately 16% — slightly below Cascade's CascadeMarket take rate of 17% and below the industry average for the largest platform players. Prior to the public announcement of the proposed acquisition, Pinnacle's market capitalization was approximately $3.9 billion, reflecting investor concerns about the Company's decelerating growth trajectory and increasing seller attrition, factors that are central to Cascade's weakening-competitor defense.
Pinnacle's platform is primarily digital; unlike Cascade, Pinnacle does not operate its own physical fulfillment infrastructure. Pinnacle sellers are generally responsible for their own shipping and fulfillment, although Pinnacle offers a "Pinnacle Shipping Partners" program that provides negotiated carrier rates. The absence of an integrated fulfillment network is a key strategic limitation that the proposed acquisition is designed to address by providing Pinnacle sellers with access to Cascade's 22-warehouse network.
D. The FTC's Challenge
The Federal Trade Commission filed its administrative complaint on June 20, 2025, assigned Docket No. 9438, alleging that the proposed acquisition of Pinnacle by Cascade would violate Section 7 of the Clayton Act, 15 U.S.C. § 18, and Section 5 of the FTC Act, 15 U.S.C. § 45. Three days later, on June 23, 2025, the FTC filed its complaint for a temporary restraining order and preliminary injunction in the United States District Court for the Western District of Washington, assigned Case No. 2:25-cv-01087-RAJ, before the Honorable Richard A. Johannsen.
The Commission authorized the filing by a vote of 3–2. The narrow margin of the vote is noteworthy and reflects internal division on the strength of the FTC's competitive theory. While the identity of the dissenting Commissioners and the content of any dissenting statements are relevant to our broader advocacy, the bare fact of a 3–2 vote is itself indicative that reasonable minds within the Commission disagreed on the merits of the case.
The FTC's litigation team is led by Claire Dunmore, Lead Trial Attorney in the Bureau of Competition's Mergers IV Division, and includes Samuel Ortega (Senior Trial Counsel), Rebecca Yun (Staff Attorney), and Dr. Nathaniel Hargrove, a staff economist in the Bureau of Economics.
The FTC's complaint alleges a relevant product market defined as "online marketplace platform services for third-party sellers in the United States." This market definition is central to the FTC's theory of harm and, as discussed in detail below, is the principal vulnerability in the Commission's case. Within this alleged market, the FTC ascribes the following shares based on gross merchandise volume:
Based on these market share figures, the FTC's complaint alleges a pre-merger Herfindahl-Hirschman Index ("HHI") of 2,361, a post-merger HHI of 2,856, and a delta (change in HHI) of 495. See FTC Complaint ¶¶ 42, 47. Under the 2023 Merger Guidelines, a post-merger HHI above 2,500 with a delta exceeding 200 is presumed to create a significant risk to competition.
The FTC's theory of competitive harm contends that the merger would eliminate head-to-head competition between two of four significant marketplace platforms, giving the merged firm undue leverage over third-party sellers through increased take rates, reduced seller services, and diminished innovation incentives. The complaint further alleges a trend toward concentration in the online marketplace platform space that the proposed transaction would accelerate.
Additionally, the Independent Online Sellers Alliance ("IOSA"), a trade association representing independent sellers on various online marketplace platforms, has moved to intervene in the district court action on behalf of the FTC. IOSA is represented by Galloway & Peck LLP, with Martina Galloway serving as lead counsel. Cascade has filed an opposition to IOSA's motion to intervene, and the motion remains pending before Judge Johannsen.
E. Cascade's Principal Defenses (Overview)
Cascade intends to mount a comprehensive defense against the FTC's preliminary injunction motion. The principal defensive theories, each of which is summarized here and discussed in greater detail in the analysis sections below, are as follows:
Market Definition Challenge. Cascade will argue that the FTC's proposed relevant market — "online marketplace platform services for third-party sellers in the United States" — is artificially narrow and excludes significant competitive alternatives that discipline marketplace platform pricing and behavior. The relevant market should be defined as "all e-commerce retail," encompassing direct-to-consumer e-commerce, social commerce platforms, hybrid retail models, and third-party marketplace platforms. Total United States e-commerce GMV in 2024 was approximately $757 billion. Within this properly defined market, the combined entity's share is approximately 7.3% (including Cascade's direct-to-consumer e-commerce sales) or approximately 1.9% (marketplace GMV only) — far below any threshold at which a structural presumption of anticompetitive effects would arise.
Procompetitive Efficiencies. The transaction will generate substantial, verifiable, and merger-specific efficiencies of approximately $340 million annually by Year 3 post-closing. These efficiencies consist of approximately $195 million in logistics and fulfillment savings derived from integrating Pinnacle's 185,000 sellers into Cascade's 22-warehouse nationwide fulfillment network, and approximately $145 million in technology and platform synergies from the consolidation of duplicative technology infrastructure and the integration of complementary platform capabilities.
Ease of Entry and Expansion. The online marketplace platform market is characterized by low barriers to entry and ongoing new entry. Brevity Social Commerce launched in 2023 and Trove Marketplace launched in 2024, demonstrating that new competitors continue to enter the space. Additionally, social commerce platforms, direct-to-consumer website builders, and aggregator platforms provide sellers with multiple alternative channels that constrain marketplace platform behavior.
Weakening Competitor. Pinnacle's competitive trajectory is declining. Pinnacle's GMV growth has decelerated from 28% year-over-year in 2022 to 9% year-over-year in 2024. Seller churn has increased from 12% in 2022 to 21% in 2024. While Pinnacle likely does not satisfy the strict requirements of the failing-firm defense (as it is not on the verge of insolvency), its weakening competitive significance diminishes the merger's potential to lessen competition.
Expert Analysis. Cascade has retained Dr. Priya Ramanathan of Brindoval Analytics LLC to provide expert testimony on market definition, competitive effects, and efficiencies. Dr. Ramanathan's analysis will rebut the testimony of the FTC's expert, Dr. Wallace Keenan of Thornfield Research Group, and will support Cascade's broader market definition and procompetitive theories.
III. The Statutory Framework: Section 13(b) of the FTC Act
A. Text of Section 13(b) (15 U.S.C. § 53(b))
Section 13(b) of the Federal Trade Commission Act, codified at 15 U.S.C. § 53(b), provides the statutory authority under which the FTC seeks to enjoin the proposed transaction. The relevant portion of Section 13(b) provides, in pertinent part:
"Whenever the Commission has reason to believe—
(1) that any person, partnership, or corporation is violating, or is about to violate, any provision of law enforced by the Federal Trade Commission, and
(2) that the enjoining thereof pending the completion of the Commission's proceeding would be in the interest of the public—
the Commission by any of its attorneys designated by it for such purpose may bring suit in a district court of the United States to enjoin any such act or practice. Upon a proper showing that, weighing the equities and considering the Commission's likelihood of ultimate success, such action would be in the public interest, and after notice to the defendant, a temporary restraining order or a preliminary injunction may be granted without bond . . . ."
Several features of this statutory text warrant emphasis. First, the statute authorizes the FTC to seek injunctive relief whenever it has "reason to believe" that a party "is violating, or is about to violate" any provision of law enforced by the Commission. In the merger context, the relevant substantive provision is Section 7 of the Clayton Act, 15 U.S.C. § 18, which the FTC enforces through both its administrative process and federal court proceedings. Because the proposed transaction has not yet been consummated, the FTC's complaint alleges that Cascade "is about to violate" Section 7 by consummating a transaction the effect of which may be substantially to lessen competition.
Second, the statute establishes a two-part predicate for injunctive relief: the court must find both that there is a "likelihood of ultimate success" for the Commission and that "weighing the equities," the injunction "would be in the public interest." The use of the word "shall" in connection with a "proper showing" has been interpreted by courts as conferring a degree of statutory entitlement upon the FTC once the proper showing is made, but the FTC must still satisfy both prongs.
Third, the statute expressly provides that the preliminary injunction "may be granted without bond." This provision relieves the FTC of the typical requirement that a movant post a bond to compensate the enjoined party for damages suffered if the injunction is later determined to have been improvidently granted. This is significant in the present case because the absence of a bond requirement means that Cascade has no recourse to recover the substantial damages it would incur from an injunction — including the potential triggering of the $282 million reverse termination fee — even if the FTC ultimately fails to prove its case in the administrative proceeding.
Fourth, the statute requires that the FTC first file an administrative complaint before seeking injunctive relief in federal court. Here, the FTC satisfied this prerequisite by filing its administrative complaint on June 20, 2025, Docket No. 9438, three days before filing the district court action. The administrative complaint initiates the Commission's internal adjudicatory process before an Administrative Law Judge, which will proceed in parallel with the district court injunction proceedings.
B. Relationship to Section 7 of the Clayton Act
Section 7 of the Clayton Act, 15 U.S.C. § 18, provides the substantive legal standard that the FTC must ultimately establish in its administrative proceeding and that forms the basis for the likelihood-of-success analysis in the preliminary injunction proceeding. Section 7 prohibits any acquisition of stock or assets where "the effect of such acquisition may be substantially to lessen competition, or to tend to create a monopoly" in any line of commerce or in any section of the country.
The FTC enforces Section 7 through its administrative adjudicatory process, in which an Administrative Law Judge conducts an evidentiary hearing and issues an initial decision, subject to review by the full Commission. When the FTC determines that a merger under review poses an imminent threat to competition and that administrative proceedings alone would be insufficient to prevent the consummation of the transaction, the Commission may invoke Section 13(b) to seek a preliminary injunction in federal district court to maintain the status quo — that is, to prevent the parties from consummating their transaction — pending the completion of the administrative proceeding.
A critical feature of Section 7 is its "incipiency" standard. Congress enacted Section 7 with the express intent to arrest anticompetitive mergers "in their incipiency," before competitive harm has actually materialized. As the Supreme Court explained in Brown Shoe Co. v. United States, 370 U.S. 294, 317–18 (1962), and United States v. Philadelphia National Bank, 374 U.S. 321, 362 (1963), the government need not prove that a merger will certainly lessen competition; rather, it need only demonstrate that the merger "may" do so. This probabilistic standard reflects Congress's judgment that preventing anticompetitive consolidation before the fact is preferable to attempting to restore competition after the fact, when industry structures have already been altered and the damage to competitive dynamics may be irreversible.
The incipiency standard has significant implications for the preliminary injunction analysis. It means that the FTC's burden at the administrative trial is itself a probabilistic one — the Commission need not prove actual competitive harm, but only a reasonable probability of competitive harm. When the court evaluates the FTC's "likelihood of ultimate success" in the administrative proceeding for purposes of Section 13(b), it is therefore assessing the FTC's likelihood of proving a reasonable probability of competitive harm — a double layer of probability that theoretically makes the FTC's burden at the preliminary injunction stage lighter still. However, as discussed in Section IV below, courts have not uniformly interpreted this compounded standard as a virtual entitlement to injunctive relief, and the Ninth Circuit's approach provides meaningful opportunity for defendants to contest the FTC's showing.
C. Procedural Posture: Dual-Track Proceeding
The present litigation is a dual-track proceeding, a procedural structure that is standard in FTC merger challenges but warrants careful attention because of its implications for the effective outcome of the case. In the dual-track model, the FTC simultaneously pursues two parallel proceedings: (1) an administrative complaint before an FTC Administrative Law Judge, which is the vehicle for the Commission's ultimate adjudication of the merits of the Section 7 claim; and (2) a complaint in federal district court under Section 13(b), seeking a preliminary injunction to prevent the parties from consummating the transaction during the pendency of the administrative proceeding.
The district court's role in this dual-track structure is limited but decisive. The court does not adjudicate the ultimate merits of the Section 7 claim; that determination is reserved for the Commission's administrative process. Rather, the court's function is to determine whether the FTC has made a sufficient showing of likelihood of success and equitable considerations to warrant an injunction maintaining the status quo — i.e., preventing the parties from closing the merger — while the administrative process runs its course.
The practical effect of this structure, however, is far more consequential than the limited nature of the court's inquiry might suggest. If the district court grants a preliminary injunction, the transaction is effectively enjoined for the duration of the administrative proceeding. FTC administrative proceedings in merger cases are lengthy; the administrative trial alone typically consumes several months, and the Commission's review of the ALJ's initial decision adds additional time. During this period, the parties are prevented from consummating their transaction, and the merger agreement's outside date continues to run.
This dynamic is directly relevant to the present case. The Merger Agreement provides for an outside date of March 14, 2026, with a single three-month extension to June 14, 2026, available only if the sole unsatisfied closing condition at the initial outside date is the receipt of required antitrust clearances. If the court enters a preliminary injunction following the September 8, 2025 evidentiary hearing — with a decision likely issued in October 2025 at the earliest — the parties would have, at most, approximately seven to eight months before the extended outside date expires on June 14, 2026. That period is almost certainly insufficient for the completion of the FTC's administrative trial and any subsequent appeal to the full Commission, let alone further judicial review. As a practical matter, therefore, a preliminary injunction in this case would almost certainly terminate the transaction, either because the outside date would expire before the administrative process concludes or because the prolonged uncertainty and costs of continued litigation would cause one or both parties to exercise their termination rights.
This practical reality is a critical consideration in the equities analysis, as discussed in Sections IV.C and VI.B below.
IV. The Section 13(b) Preliminary Injunction Standard
A. The Two-Prong Test
Under established circuit authority, a Section 13(b) preliminary injunction requires the FTC to demonstrate two things: first, a likelihood that the FTC will ultimately succeed on the merits in its administrative proceeding — that is, that the proposed transaction violates Section 7 of the Clayton Act; and second, that the equities weigh in favor of injunctive relief. This two-prong framework is derived from the statutory text, which requires "a proper showing that, weighing the equities and considering the Commission's likelihood of ultimate success, such action would be in the public interest." 15 U.S.C. § 53(b).
The two-prong Section 13(b) test is distinct from, and generally more favorable to the government than, the traditional four-factor preliminary injunction standard applied in private litigation. Under the traditional test, a movant must independently establish: (1) a likelihood of success on the merits; (2) a likelihood of irreparable harm absent an injunction; (3) that the balance of hardships tips in the movant's favor; and (4) that an injunction would serve the public interest. See Winter v. Natural Resources Defense Council, Inc., 555 U.S. 7, 20 (2008). The Section 13(b) standard collapses and simplifies this inquiry, particularly with respect to irreparable harm, as discussed in Section IV.D below.
While the two-prong test is facially straightforward, courts have applied its constituent elements with varying degrees of rigor, creating a body of precedent that provides opportunities for both the FTC and the defendants to argue for more or less demanding interpretations. The following subsections address each prong in detail.
B. Prong One: Likelihood of Success on the Merits
The first prong — likelihood of success on the merits — is the heart of the Section 13(b) analysis and the primary battleground in any contested merger injunction proceeding. Courts have interpreted this prong with varying degrees of rigor, and the precise formulation of the standard differs somewhat across the federal circuits.
At one end of the spectrum, some courts have adopted a relatively deferential formulation requiring only that the FTC raise "questions going to the merits so serious, substantial, difficult, and doubtful as to make them fair ground for thorough investigation, study, deliberation and determination." See FTC v. H.J. Heinz Co., 246 F.3d 708, 714–15 (D.C. Cir. 2001); FTC v. Whole Foods Market, Inc., 548 F.3d 1028, 1035 (D.C. Cir. 2008). Under this formulation — sometimes referred to as the "serious questions" standard — the FTC need not demonstrate that it will probably prevail in the administrative proceeding; it need only show that the case presents sufficiently serious questions to warrant maintaining the status quo while the administrative process unfolds. This standard is considerably lower than the traditional probability-of-success requirement and reflects a judicial recognition that the district court's role in a Section 13(b) proceeding is not to resolve the ultimate merits but rather to determine whether the case is sufficiently meritorious to justify preserving the status quo.
At the other end of the spectrum, other courts have required the FTC to demonstrate a "reasonable probability" of ultimate success in the administrative proceeding. Under this formulation, the FTC must present evidence sufficient to persuade the court that the Commission's case has a reasonable probability of prevailing — a more demanding standard than the "serious questions" test, although still less onerous than the traditional "probability of success" requirement applied in private litigation.
The Ninth Circuit, which governs the Western District of Washington, applies a standard that is closer to the "serious questions" formulation but that nevertheless requires a meaningful evaluation of the merits. The court does not simply rubber-stamp the FTC's showing; it independently assesses the evidence and determines whether the FTC has raised sufficiently serious questions to justify injunctive relief. This means that the court will examine the FTC's market definition, its competitive effects analysis, and the defendants' defenses and rebuttal evidence, and will form its own preliminary assessment of the strength of the FTC's case.
The practical import for our case is significant. Even under the more deferential "serious questions" standard, Judge Johannsen must assess the FTC's market definition, its theory of competitive harm, and the strength of the defendants' defenses — including Cascade's broader market definition, its efficiencies evidence, its ease-of-entry evidence, and its weakening-competitor evidence. The FTC cannot rely on bare allegations or conclusory assertions; it must present evidence that supports its prima facie case and withstands scrutiny under cross-examination at the evidentiary hearing. The FTC's narrow market definition — "online marketplace platform services for third-party sellers in the United States" — is the principal vulnerability in its case, and the 3–2 Commission vote itself signals that reasonable minds within the Commission disagreed on whether the case meets even the "reason to believe" standard required to authorize the filing. These factors create meaningful opportunities to challenge the strength of the FTC's likelihood-of-success showing.
C. Prong Two: Balancing the Equities
The second prong of the Section 13(b) analysis requires the court to weigh the equities and determine whether injunctive relief would be in the public interest. Even if the FTC demonstrates a likelihood of success on the merits, the court retains discretion to deny a preliminary injunction if the equities weigh against relief. This equitable inquiry is not merely a pro forma consideration; it is an independent requirement of the statute, and courts have denied injunctions on equitable grounds even where the FTC made a threshold showing on the merits.
In conducting the equities analysis, courts consider a range of factors, including:
(a) The public interest in effective antitrust enforcement. Courts recognize that the enforcement of the antitrust laws serves the public interest by preserving competitive markets. The FTC will argue that the public interest favors an injunction to prevent the consummation of an anticompetitive merger that would harm competition in the online marketplace platform market. This factor generally weighs in the FTC's favor, but its weight depends on the strength of the FTC's merits showing — a weak case on the merits diminishes the public interest in enjoining the transaction.
(b) The private interests of the merging parties in completing a lawful transaction. Merging parties have a legitimate interest in consummating a lawful business transaction that they have negotiated, financed, and (in this case) obtained shareholder approval for. This interest is particularly weighty where, as here, the transaction generates substantial procompetitive efficiencies and involves a significant financial commitment.
(c) The impact on third parties. Courts consider the effect of an injunction on third parties, including in this case the sellers on both platforms, consumers, employees, and shareholders. These effects can cut in either direction depending on the evidence presented.
(d) The practical effect of the injunction on the underlying transaction. This factor is of particular importance in merger cases. Where a merger agreement contains an outside date, courts have recognized that a preliminary injunction may effectively terminate the transaction by preventing consummation within the contractual deadline. When this is the case, the court must consider whether the injunction's practical effect — permanent termination of the transaction — is proportionate to the strength of the FTC's merits showing.
The relevance of transaction deadlines to the equities analysis deserves particular emphasis. Where a preliminary injunction will effectively kill the deal, the court's equitable discretion takes on heightened significance. Courts have recognized that the extraordinary practical consequence of an injunction — the death of a multi-billion-dollar transaction — requires a correspondingly strong showing on the merits. Where the FTC's case is closely contested, as it is here, the deal-killing effect of an injunction weighs against granting relief because the defendants would suffer irreversible harm (loss of the transaction) even if the FTC ultimately fails to prove its case in the administrative proceeding.
In our case, the outside date of March 14, 2026, with the three-month extension to June 14, 2026, means that a preliminary injunction entered after the September 8, 2025 hearing would leave at most seven to eight months before the extended outside date — a period almost certainly insufficient for the administrative trial and any subsequent appellate proceedings. The practical effect of a preliminary injunction would therefore be to kill the transaction outright.
The relevance of the reverse termination fee is also significant. Cascade is contractually obligated to pay Pinnacle a $282 million reverse termination fee if the merger fails due to regulatory blockage. This substantial financial exposure constitutes a concrete, quantifiable harm to Cascade that the court must weigh in the equities analysis. The absence of a bond requirement under Section 13(b) means that Cascade has no mechanism to recover this sum from the FTC if the injunction is later dissolved or if the FTC ultimately fails to prove its case. The irreversible nature of this harm underscores the importance of the equities prong as a meaningful check on the FTC's statutory advantages.
D. Distinction from the Traditional Four-Factor Preliminary Injunction Test
The differences between the Section 13(b) standard and the traditional four-factor preliminary injunction test warrant explicit analysis, because a precise understanding of these distinctions is essential to framing our opposition strategy.
Under the traditional test, applied in private antitrust suits and other contexts not governed by Section 13(b), a movant seeking a preliminary injunction must independently demonstrate each of four elements: (i) a likelihood of success on the merits; (ii) a likelihood of irreparable harm in the absence of preliminary relief; (iii) that the balance of hardships tips in the movant's favor; and (iv) that an injunction is in the public interest. See Winter, 555 U.S. at 20. Each element must be established, and the failure to satisfy any one of them is ordinarily fatal to the motion.
Under Section 13(b), the FTC is generally relieved of the independent requirement to demonstrate irreparable harm. The statute itself is understood to embody a legislative determination that an injunction preserving the status quo pending the Commission's administrative proceedings serves the public interest. Courts have recognized that the FTC need not make the same showing of imminent, irreparable harm that a private plaintiff would be required to make in order to obtain preliminary injunctive relief. See FTC v. Sysco Corp., 113 F. Supp. 3d 1, 22 (D.D.C. 2015); FTC v. H.J. Heinz Co., 246 F.3d at 726. This statutory advantage is significant because demonstrating irreparable harm — i.e., that the threatened injury is imminent, concrete, and not compensable by money damages — is often the most demanding element of the traditional four-factor test and frequently the ground on which private preliminary injunction motions fail.
However, the FTC's statutory advantage does not eliminate the equities inquiry entirely. As discussed above, the court must still weigh the balance of equities and the public interest, and the defendants can introduce affirmative evidence on those factors. The equities prong of the Section 13(b) analysis thus preserves a meaningful, if somewhat narrower, version of the balance-of-hardships and public-interest inquiries that would apply under the traditional four-factor test.
Key Takeaway for Our Defense. While we cannot force the FTC to demonstrate irreparable harm in the traditional sense, we can — and should — vigorously argue that the equities weigh against injunctive relief. The equities inquiry provides the appropriate vehicle for presenting the following arguments:
(a) The FTC's case rests on a narrow, internally contested market definition that was authorized by only a 3–2 Commission vote, undermining the strength of the merits showing and correspondingly reducing the weight of the public interest in enjoining the transaction;
(b) The transaction generates substantial, verifiable procompetitive efficiencies of $340 million per year that would be permanently lost if the transaction is enjoined and the outside date expires;
(c) Pinnacle is a weakening competitor whose declining trajectory means that the competitive landscape will be less affected by the transaction than the FTC's static market share analysis suggests; and
(d) The injunction would effectively terminate a $4.7 billion transaction, triggering a $282 million reverse termination fee and causing irreversible harm to Cascade, with no bond or other mechanism for Cascade to recover its losses if the FTC's case ultimately fails.
V. Key Precedent Analyzed
The following section analyzes the principal cases that will inform the court's application of the Section 13(b) standard to the facts of our case. We address cases likely to be cited by the FTC in support of its motion, as well as cases favorable to the defense, and identify the key points of distinction and analogy for each.
A. FTC v. H.J. Heinz Co., 246 F.3d 708 (D.C. Cir. 2001)
Facts and Holding. Heinz involved the proposed merger of H.J. Heinz Company and the Beech-Nut division of Milnot Holding Corporation, the second- and third-largest manufacturers of baby food in the United States. The leading firm, Gerber Products Company, held approximately 65% of the market. Heinz held approximately 17.4% and Beech-Nut approximately 15.4%, giving the combined entity a share of approximately 32.8% in a three-firm market. The FTC sought a preliminary injunction under Section 13(b), and the district court denied the motion, finding that the FTC had not demonstrated a likelihood of success because the two merging firms did not compete head-to-head in most markets. The D.C. Circuit reversed, holding that the FTC had established a prima facie case by demonstrating high post-merger concentration levels, and that the district court erred by failing to give appropriate weight to the structural presumption of anticompetitive effects arising from the HHI analysis.
Standard Articulated. The D.C. Circuit held that the FTC is entitled to a preliminary injunction if it demonstrates a "likelihood of success" in proving that the merger violates Section 7, giving significant weight to structural presumptions arising from market concentration data. Once the FTC establishes a prima facie case through market share and HHI data — specifically, by showing that the merger would significantly increase concentration in an already concentrated market — the burden shifts to the defendants to rebut the presumption of anticompetitive effects. The court further held that efficiencies claimed by the defendants must be "extraordinary" to justify a merger that is presumptively anticompetitive based on market structure.
The court endorsed a version of the "serious questions" standard, stating that the FTC need only "raise questions going to the merits so serious, substantial, difficult and doubtful as to make them fair ground for thorough investigation." Id. at 714–15. The court also emphasized that the FTC's burden at the preliminary injunction stage is less demanding than its ultimate burden at the administrative trial, because the district court's role is not to resolve the merits but to determine whether the case warrants maintenance of the status quo.
Relevance to Our Case. The FTC will almost certainly rely heavily on Heinz in its briefing and at the evidentiary hearing. The FTC's expected arguments based on Heinz include:
•  The post-merger HHI of 2,856 with a delta of 495, as alleged in the FTC's complaint, exceeds the thresholds that the Heinz court considered sufficient to establish a structural presumption of anticompetitive effects.
•  The elimination of head-to-head competition between Cascade and Pinnacle in the "online marketplace platform services" market parallels the elimination of competition between Heinz and Beech-Nut in the baby food market.
•  The Heinz court's skepticism toward efficiencies defenses should apply with equal force here, particularly given the Heinz court's observation that efficiencies must be "extraordinary" to overcome a structural presumption.
Our Response. While Heinz is an important and influential decision, it is distinguishable from the present case in several critical respects:
First, the HHI figures cited by the FTC depend entirely on the Commission's improperly narrow market definition. If the relevant market is properly defined as "all e-commerce retail" — a market with total U.S. GMV of $757 billion in 2024 — the combined entity's share is approximately 7.3% (including Cascade's direct-to-consumer sales) or approximately 1.9% (marketplace GMV only), and HHI levels fall far below any presumptively anticompetitive threshold. The structural presumption on which Heinz relied simply does not arise under a properly defined market.
Second, the efficiencies at issue in Heinz were modest, poorly documented, and inadequately verified. The D.C. Circuit rejected them in part because the defendants' own documents did not support the claimed magnitude of savings and the efficiencies were not shown to be merger-specific. Our efficiencies of $340 million annually are substantially larger, more concrete, and more directly verifiable than those presented in Heinz. They are documented in Cascade's ordinary-course business records, supported by detailed integration plans, and tied to specific operational capabilities — most importantly, the integration of Pinnacle's 185,000 sellers into Cascade's 22-warehouse fulfillment network — that cannot be replicated absent the merger.
Third, and most fundamentally, Heinz involved a highly concentrated, mature, and stable market with only three competitors, verified high barriers to entry, and no significant prospect of new competition. The online marketplace platform market is, by contrast, dynamic, rapidly evolving, and subject to continuous new entry. Brevity Social Commerce launched in 2023, Trove Marketplace launched in 2024, and social commerce and direct-to-consumer platforms continue to proliferate. The competitive dynamics of a digital platform market bear little resemblance to the three-firm baby food market at issue in Heinz.
B. FTC v. Sysco Corp., 113 F. Supp. 3d 1 (D.D.C. 2015)
Facts and Holding. In Sysco, the FTC sought a preliminary injunction to block the proposed merger of Sysco Corporation and US Foods, Inc., the two largest broadline foodservice distributors in the United States. The district court granted the FTC's motion, finding that the FTC had demonstrated a likelihood of success in proving that the merger would substantially lessen competition in the national and local markets for broadline foodservice distribution. The court accepted the FTC's market definition, credited the FTC's evidence of high market shares and the elimination of head-to-head competition between the two largest players, and rejected the defendants' efficiencies defense as insufficiently merger-specific and not adequately verified.
Standard Applied. The Sysco court applied the "likelihood of ultimate success" standard and conducted a detailed, evidence-intensive analysis of market definition, competitive effects, and the defendants' asserted efficiencies. The court emphasized that it was required to make its own independent assessment of the evidence, rather than simply deferring to the FTC's judgment, and it engaged in a thorough evaluation of both sides' expert economic testimony. The court found that the structural presumption arising from the defendants' combined market shares was not rebutted by the efficiencies defense, in part because the claimed efficiencies were not sufficiently verified and in part because a significant portion of the claimed savings were not merger-specific — they could have been achieved through internal growth or alternative transactions.
Relevance to Our Case. The FTC may seek to analogize the present case to Sysco in several respects:
•  The FTC may argue that, as in Sysco, the proposed merger eliminates competition between two significant rivals in a concentrated market, and that the elimination of this head-to-head competition is itself a cognizable competitive harm.
•  The FTC may argue that Cascade's efficiencies defense suffers from the same infirmities as those rejected in Sysco — specifically, that the claimed savings are not merger-specific and are not adequately verified.
•  The FTC may emphasize the Sysco court's willingness to credit the FTC's narrower market definition over the defendants' broader alternative.
Our Response. Sysco is distinguishable in several important respects:
First, the broadline foodservice distribution market at issue in Sysco was a mature, geographically segmented market with high switching costs, significant capital requirements for new entry, and limited prospects for competitive expansion by existing fringe players. The online marketplace platform market has none of these characteristics. Sellers and consumers multi-home across multiple platforms simultaneously, switching costs are minimal (sellers can list products on multiple platforms with negligible incremental effort), and new entry occurs continuously.
Second, the Sysco court's rejection of the defendants' efficiencies defense was based on specific findings that the claimed savings were not merger-specific — i.e., they could have been achieved through internal growth or alternative means. Our efficiencies are fundamentally different. The $195 million in logistics and fulfillment savings depend on integrating Pinnacle's 185,000 sellers into Cascade's physical 22-warehouse fulfillment network — a capability that Pinnacle lacks independently and cannot replicate without access to Cascade's infrastructure. The $145 million in technology and platform synergies arise from the consolidation of duplicative technology platforms — savings that, by definition, can only be achieved through a combination of the two firms' technology stacks. These efficiencies are merger-specific in the most literal sense: they require the merger.
Third, the combined market share in Sysco was substantially higher than in the present case, and the market structure — with two dominant players and a fringe of small competitors — was more susceptible to coordinated or unilateral anticompetitive effects. Here, even under the FTC's own narrow market definition, the combined entity's share of 38.3% would place it behind Vertex Commerce (35.7%), and Nomad Shops (14.6%) would remain a significant competitive constraint. The four-firm market structure post-merger (three significant players plus a competitive fringe) is materially different from the two-firm-plus-fringe structure in Sysco.
C. FTC v. Staples Inc., 190 F. Supp. 3d 100 (D.D.C. 2016)
Facts and Holding. In the second Staples case, the FTC sought and obtained a preliminary injunction blocking the proposed merger of Staples, Inc. and Office Depot, Inc. The court found that the FTC's narrow product market definition — business-to-business sales of office supplies by "office supply companies" — was supported by substantial evidence of competitive distinction between the products and services offered by office supply companies and those offered by other channels. The court found that the combined firm would hold in excess of 70% of the relevant market, creating an overwhelming structural presumption of anticompetitive effects.
Relevance to Our Case. Staples is distinguishable on several grounds:
First, the Staples court credited the FTC's narrow market definition because there was direct, concrete evidence of "competitive distinction" between office supply companies and other distribution channels. Customers of business-to-business office supply companies had specific purchasing needs — including national account pricing, dedicated sales representatives, tailored delivery logistics, and specialized product assortments — that were not adequately served by mass merchandisers, warehouse clubs, or online retailers. In our case, the evidence of competitive distinction between marketplace platforms and other e-commerce channels is significantly weaker. Sellers actively use direct-to-consumer websites, social commerce platforms, and hybrid retail models as alternatives to and complements for marketplace platforms. The boundaries between "marketplace" and "non-marketplace" e-commerce are blurred and permeable, with sellers routinely multi-homing across channels and consumers shopping interchangeably across platform types.
Second, the combined market share in Staples exceeded 70% under the court's market definition — nearly double the combined share alleged by the FTC in the present case (38.3%). The difference in magnitude is significant because the strength of the structural presumption is directly related to the level of market concentration. A combined share of 38.3% in a four-firm market with a leading competitor at 35.7% presents a fundamentally different competitive picture than a combined share exceeding 70% in a two-firm market.
D. FTC v. Tronox Ltd., 332 F. Supp. 3d 187 (D.D.C. 2018)
Facts and Holding. In Tronox, the FTC obtained a preliminary injunction blocking the acquisition of Cristal's North American titanium dioxide business by Tronox Limited. The court accepted the FTC's narrow product market definition — chloride-process titanium dioxide — and found that high concentration in the relevant market, combined with documentary evidence of competitive effects, established a likelihood of success. The court credited the FTC's evidence that the merging firms were close competitors and that the transaction would eliminate significant head-to-head competition.
Relevance to Our Case. The FTC will likely cite Tronox for the proposition that specialized or narrow product market definitions are cognizable under Section 7 even when broader substitution possibilities exist. The Tronox court credited the FTC's narrow market definition because industry participants, including customers and competitors, distinguished between chloride-process and sulfate-process titanium dioxide for specific applications, and supply-side substitution between the two processes was limited by capital requirements and technical constraints.
We should anticipate this argument and prepare a response emphasizing that the market dynamics in digital platform industries are fundamentally different from those in physical product manufacturing. Unlike the production of titanium dioxide using different chemical processes, where supply-side substitution requires substantial capital investment and technical retooling, the provision of e-commerce services across different platform models involves minimal technical barriers to substitution. A seller can list products on a marketplace platform, a direct-to-consumer website, and a social commerce platform simultaneously, using many of the same digital tools and fulfillment processes. The functional and economic distinction between "marketplace platform services" and other forms of e-commerce is far less clear-cut than the distinction between chloride-process and sulfate-process titanium dioxide.
E. FTC v. Penn State Hershey Medical Center, 838 F.3d 327 (3d Cir. 2016)
Facts and Holding. In Penn State Hershey, the Third Circuit reversed the district court's denial of a preliminary injunction and ordered that the FTC's motion be granted, blocking a proposed merger between two hospitals in the Harrisburg, Pennsylvania area. The case principally concerned geographic market definition; the district court had credited the defendants' argument for a broader geographic market, and the Third Circuit concluded that the district court erred by failing to give appropriate weight to the FTC's evidence supporting a narrower geographic market. The Third Circuit emphasized the structural presumption arising from high concentration in the properly defined geographic market and held that the defendants had not rebutted that presumption.
Relevance to Our Case. While Penn State Hershey is primarily a geographic-market case and arises in a different industry context, the FTC may cite it for the Third Circuit's broad endorsement of the structural presumption and its statement that the government's burden at the preliminary injunction stage is "lighter" than its burden at the merits stage. The FTC may also cite the Third Circuit's skepticism toward defendants' efforts to expand the relevant market beyond the boundaries suggested by the FTC's evidence.
We should note in response that Penn State Hershey is a Third Circuit decision and is not binding on the Western District of Washington, which sits within the Ninth Circuit. The Ninth Circuit applies a somewhat more nuanced approach to the Section 13(b) standard. Moreover, the geographic-market analysis at issue in Penn State Hershey — which turned on patient travel patterns and hospital referral data — involves a fundamentally different analytical framework than the product-market analysis at issue in our case.
F. Cases Favorable to Defendants
1. FTC v. RAG-Stiftung, No. 19-cv-2337 (D.D.C. 2020)
In RAG-Stiftung, the district court denied the FTC's motion for a preliminary injunction to block the acquisition of Evonik's hydrogen peroxide business by One Equity Partners, an affiliate of RAG-Stiftung. The court found that the FTC failed to demonstrate that its proposed market definition was correct, and that the defendants' rebuttal evidence on competitive dynamics — including evidence of significant competition from firms and products excluded from the FTC's proposed market — was persuasive. The court conducted a thorough and independent evaluation of the evidence and concluded that the FTC had not satisfied its burden of demonstrating a likelihood of success on the merits.
RAG-Stiftung is directly relevant to our case because it demonstrates that courts do deny Section 13(b) injunctions when the FTC's market definition is genuinely contested and the evidence does not clearly support the FTC's theory of competitive harm. The parallels between RAG-Stiftung and our case are significant: in both cases, the FTC advances a narrow market definition that excludes significant competitive alternatives; in both cases, the defendants present rebuttal evidence demonstrating that the excluded competitors impose meaningful competitive discipline; and in both cases, the Commission's own internal vote reflects division on the merits. The 3–2 Commission vote authorizing the present case — like the closely contested evidentiary record in RAG-Stiftung — underscores the debatable nature of the FTC's theory and supports the conclusion that the FTC has not demonstrated a sufficiently strong likelihood of success to justify the extraordinary relief of a preliminary injunction.
2. FTC v. Arch Coal Inc., 329 F. Supp. 2d 109 (D.D.C. 2004)
In Arch Coal, the district court denied the FTC's motion for a preliminary injunction to block the proposed acquisition of Triton Coal Company by Arch Coal, Inc. The court found that the FTC had not demonstrated a likelihood of success because the relevant market was more competitive than the FTC alleged and because entry by new competitors was likely. The court credited the defendants' evidence that potential new entrants could and would enter the market in response to any post-merger price increase, and concluded that the FTC's static market-share analysis did not adequately account for the dynamic competitive conditions in the relevant market.
Arch Coal directly supports Cascade's ease-of-entry argument. The online marketplace platform market has experienced recent and significant new entry: Brevity Social Commerce launched in 2023 and Trove Marketplace launched in 2024, both achieving meaningful seller acquisition in a short period. These entries demonstrate that barriers to entry in the marketplace platform space are low and that new competitive alternatives are readily available to sellers. If the court credits this evidence, it will undermine the FTC's structural presumption even under the FTC's own narrow market definition.
Furthermore, Arch Coal supports the broader proposition that static market-share data and HHI calculations, while relevant, do not tell the full competitive story. In dynamic, technology-driven markets, competitive conditions can shift rapidly, and the presence of recent entry and expansion is strong evidence that the market is more competitive than snapshot market shares would suggest. This principle applies with particular force to the online marketplace platform market, where technological innovation, low marginal costs of platform expansion, and the multi-homing behavior of both sellers and consumers create a competitive environment that is fundamentally different from the stable, concentrated markets in which the structural presumption has traditionally been applied.
VI. Application of the Standard to Our Case
Having established the governing legal framework and the relevant

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