ATTORNEY WORK PRODUCT — PRIVILEGED AND CONFIDENTIAL
CALDERWOOD & HARKNESS LLP 1401 K Street NW, Suite 1200 Washington, D.C. 20005
MEMORANDUM
Date: August 1, 2025
To: Howard Bellamy, Responsible Partner, Antitrust & Competition Elaine Forsythe, Billing Partner, Antitrust & Competition
From: Elliot Nguyen, Lead Associate, Antitrust & Competition Aaron Liu, Working Associate, Antitrust & Competition
Re: Expert Strategy and Testimony Preparation — FTC v. Cascade Retail Holdings Inc. et al., Case No. 2:25-cv-01087-RAJ (W.D. Wash.)
Matter No.: 1038-00001
PRIVILEGED DESIGNATION: This memorandum is protected by the attorney-client privilege and the work-product doctrine. It is prepared in anticipation of litigation and for the purpose of rendering legal advice. It contains the mental impressions, conclusions, opinions, and legal theories of attorneys at Calderwood & Harkness LLP. Do not distribute outside the Calderwood & Harkness engagement team without express authorization from Howard Bellamy. Any inadvertent disclosure of this memorandum does not constitute a waiver of any applicable privilege or protection.
ATTORNEY WORK PRODUCT — PRIVILEGED AND CONFIDENTIAL
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ATTORNEY WORK PRODUCT — PRIVILEGED AND CONFIDENTIAL
I. Purpose and Executive Summary
This memorandum sets forth the comprehensive expert strategy for the preliminary injunction evidentiary hearing currently scheduled to begin September 8, 2025, with an estimated duration of five court days, before the Honorable Richard A. Johannsen, United States District Court for the Western District of Washington, Seattle Division. The hearing will address the Federal Trade Commission's motion for a preliminary injunction to block the proposed acquisition of Pinnacle Commerce Inc. ("Pinnacle") by Cascade Retail Holdings Inc. ("Cascade") pursuant to Section 13(b) of the Federal Trade Commission Act, 15 U.S.C. § 53(b), and Section 7 of the Clayton Act, 15 U.S.C. § 18.
This memorandum addresses the following subjects in detail:
(a) the scope and structure of Dr. Priya Ramanathan's affirmative expert report, which is due for filing and exchange on August 18, 2025;
(b) the coordination between Dr. Ramanathan's expert testimony and the testimony of fact witnesses who will establish the factual predicates for her opinions;
(c) the preparation, design, and review of demonstrative exhibits intended for use during the evidentiary hearing;
(d) the anticipated cross-examination of the FTC's testifying expert, Dr. Wallace Keenan of Thornfield Research Group, including identification of the principal lines of attack and supporting exhibits;
(e) the preparation of Dr. Ramanathan for cross-examination by FTC counsel, with particular attention to anticipated impeachment strategies and vulnerabilities in the defense's broader market definition;
(f) the identification and mitigation of potential vulnerabilities in the defense's overall expert presentation; and
(g) the coordination of expert strategy with co-defendants' counsel at Whitfield, Greer & Tanaka LLP, who represent Pinnacle.
The overall strategic objective of the expert presentation at the preliminary injunction hearing is threefold. First, we must demonstrate that the FTC's proposed relevant market — defined as "online marketplace platform services for third-party sellers in the United States" — is artificially narrow and fails to account for the full competitive landscape in which Cascade and Pinnacle operate. Second, we must establish that the proposed merger will generate substantial, verifiable, and merger-specific procompetitive efficiencies that benefit both sellers and consumers. Third, we must present persuasive evidence that Pinnacle's weakening competitive trajectory materially reduces any anticompetitive concern arising from the transaction, even under the FTC's preferred market definition.
Several critical deadlines govern the pace of work in the coming weeks. Our opposition brief to the FTC's motion for a preliminary injunction is due on August 11, 2025. Dr. Ramanathan's affirmative expert report is due on August 18, 2025, the same date on which the FTC's expert, Dr. Keenan, is expected to file his affirmative report under simultaneous exchange. Dr. Ramanathan's rebuttal report is due on August 29, 2025. The evidentiary hearing commences on September 8, 2025. These overlapping deadlines require close coordination among the litigation team, the expert team at Brindoval Analytics, and co-defendants' counsel at Whitfield, Greer & Tanaka.
This memorandum is structured to provide a complete roadmap for the expert strategy, from the substance of Dr. Ramanathan's opinions through the logistical details of witness preparation and demonstrative exhibit production. We request the opportunity to discuss this memorandum with Howard and Elaine at the next available team meeting, ideally no later than August 4, 2025.
ATTORNEY WORK PRODUCT — PRIVILEGED AND CONFIDENTIAL
II. Overview of Expert Engagement
A. Brindoval Analytics LLC — Scope and Team
Dr. Priya Ramanathan and her team at Brindoval Analytics LLC ("Brindoval") were retained via a written engagement agreement dated July 2, 2025, between Calderwood & Harkness LLP (acting on behalf of Cascade Retail Holdings Inc.) and Brindoval Analytics LLC. The engagement agreement provides for a flat fee of $1,800,000 for all expert services rendered through the conclusion of the preliminary injunction hearing, inclusive of all professional time for the testifying expert, consulting economists, research assistants, and internal analytical support staff. Reasonable out-of-pocket expenses — including travel, data acquisition, external database licensing, and graphics production — are billed separately and are estimated at $150,000 to $200,000 for the engagement period.
The Brindoval team is organized as follows:
Dr. Priya Ramanathan — Managing Director of Brindoval Analytics and the designated testifying expert in this matter. Dr. Ramanathan holds a Ph.D. in Economics from Stanford University, with a specialization in industrial organization and antitrust economics. She has testified as an expert in over thirty matters in federal court and before the FTC, including several digital platform and e-commerce merger cases. Dr. Ramanathan is responsible for all opinions submitted to the Court, including the affirmative expert report, the rebuttal expert report, and all live testimony at the evidentiary hearing. She will be the sole signatory on all expert submissions.
Dr. Lucas Engström — Senior Economist at Brindoval Analytics and the principal non-testifying consulting economist on this engagement. Dr. Engström holds a Ph.D. in Economics from the University of Chicago and has extensive experience in econometric modeling, data analysis, and the preparation of demonstrative exhibits for antitrust litigation. Dr. Engström will not testify at the hearing and is retained in a consulting capacity under the protection of the work-product doctrine. His responsibilities include overseeing the data analysis underlying Dr. Ramanathan's opinions, managing the econometric modeling (including cross-elasticity analysis and diversion ratio modeling), and producing initial drafts of all demonstrative exhibits.
The Brindoval team additionally includes three research analysts who are supporting data processing and analysis under Dr. Engström's supervision. These analysts have received and are currently processing the following categories of data and documents:
• Cascade Retail Holdings business data, including CascadeMarket seller transaction data encompassing approximately 42,000 active third-party sellers as of Q2 2025, CascadeDirect.com sales data, and Cascade's internal financial records and projections;
• Pinnacle Commerce Inc. platform data, including transaction and seller data encompassing approximately 185,000 active third-party sellers as of Q2 2025, provided by Pinnacle through Whitfield, Greer & Tanaka pursuant to the joint defense agreement;
• Industry reports on the United States e-commerce market, including data reflecting total U.S. e-commerce gross merchandise value ("GMV") of approximately $757 billion in calendar year 2024;
• The FTC's Complaint and all exhibits thereto, filed on June 16, 2025;
• Preliminary document productions from both Cascade and Pinnacle made in connection with the FTC's second request investigation, as well as initial document productions in the district court action; and
• Publicly available financial filings, analyst reports, and market research relating to Vertex Commerce Inc., Nomad Shops LLC, Brevity Social Commerce Inc., Trove Marketplace Inc., and other relevant market participants.
Dr. Ramanathan and Dr. Engström participated in an initial briefing session with the Calderwood & Harkness team on July 8, 2025, and have been working on the analytical foundation for the expert report since that date. We have held weekly calls with the Brindoval team, with the most recent call occurring on July 30, 2025. We are satisfied that the Brindoval team is on track to deliver a first draft of the affirmative expert report by August 12, 2025, which will allow sufficient time for Calderwood & Harkness's review and comment before the August 18, 2025 filing deadline.
B. FTC's Expert — Dr. Wallace Keenan of Thornfield Research Group
The FTC has retained Dr. Wallace Keenan of Thornfield Research Group as its testifying expert in this matter. Thornfield Research Group is located at 1515 Wilson Boulevard, Suite 300, Arlington, Virginia 22209. Dr. Keenan is a well-known antitrust economist who has testified on behalf of the FTC and the Department of Justice Antitrust Division in numerous horizontal merger challenges, including several in the technology and digital platform sectors. He holds a Ph.D. in Economics from the Massachusetts Institute of Technology and has published extensively on merger simulation and market definition methodology.
Dr. Keenan is expected to submit his affirmative expert report on or before August 18, 2025, pursuant to the simultaneous exchange schedule established by the Court's pretrial order. We will not have the opportunity to review Dr. Keenan's report prior to filing Dr. Ramanathan's affirmative report; however, based on the FTC's complaint, the structure of the FTC's preliminary injunction motion, and Dr. Keenan's prior work in comparable cases, we anticipate that his testimony will address the following subjects:
• Support for the FTC's proposed relevant product market of "online marketplace platform services for third-party sellers in the United States," which the FTC contends is a distinct market separate from direct-to-consumer e-commerce, social commerce, and other forms of online retail;
• Presentation of a SSNIP (Small but Significant Non-transitory Increase in Price) test analysis purporting to demonstrate that a hypothetical monopolist of marketplace platform services could profitably impose a five-to-ten percent increase in seller take rates above the current industry range of approximately 16–17% without losing a sufficient volume of sellers to render the increase unprofitable;
• HHI (Herfindahl-Hirschman Index) calculations reflecting pre-merger concentration of 2,361 and post-merger concentration of 2,856, yielding a delta of 495, which substantially exceeds the thresholds identified in the 2023 Merger Guidelines as triggering a structural presumption of illegality;
• A unilateral effects analysis based on seller-side diversion ratios between CascadeMarket and Pinnacle, suggesting significant competitive overlap and upward pricing pressure on seller take rates post-merger; and
• A possible critique of Cascade's claimed merger-specific efficiencies, asserting that the $340 million in claimed annual savings are either not verifiable, not merger-specific, or unlikely to be passed through to sellers and consumers.
We also understand that Dr. Nathaniel Hargrove, a staff economist at the FTC's Bureau of Economics, likely contributed substantial analytical support to Dr. Keenan's work during the pre-complaint investigation phase. Although Dr. Hargrove is not expected to testify at the hearing, his analytical work may form the foundation of certain aspects of Dr. Keenan's report. We should be attentive to this possibility when analyzing Dr. Keenan's data sources and methodology upon receipt of his report.
ATTORNEY WORK PRODUCT — PRIVILEGED AND CONFIDENTIAL
III. Dr. Ramanathan's Affirmative Expert Report — Structure and Key Opinions
The following section outlines the five principal opinions that Dr. Ramanathan's affirmative expert report will present, along with the analytical framework, data inputs, and supporting evidence for each. This section is intended to serve as the substantive blueprint for the expert report and should be shared with Dr. Ramanathan and Dr. Engström as the basis for the first draft.
A. Opinion 1: Relevant Product Market Definition
Dr. Ramanathan's central and most consequential opinion is that the FTC's proposed relevant product market — "online marketplace platform services for third-party sellers in the United States" — is artificially narrow and fails to account for the full range of competitive alternatives available to both sellers and consumers. Dr. Ramanathan will opine that the relevant product market should be defined as "all e-commerce retail" in the United States, or at minimum, a broader market that encompasses marketplace platform services, direct-to-consumer e-commerce services, social commerce, and hybrid retail models.
The analytical foundation for this opinion rests on three principal bases:
Demand-Side Substitution. Third-party sellers have the demonstrated ability and willingness to shift between marketplace platform services and direct-to-consumer e-commerce channels. A seller currently listing products on CascadeMarket or Pinnacle can, and in many cases does, simultaneously operate a DTC storefront using platforms such as Dunmore Services Inc., Granite Harbor Services Inc., or Bramwell Health IT. The decision to allocate sales volume between marketplace channels and DTC channels is driven by economic factors, including relative costs (take rates versus hosting and marketing costs), customer reach, fulfillment capabilities, and brand-building objectives. Seller survey data currently being analyzed by Brindoval demonstrates that a substantial percentage of marketplace sellers actively consider DTC alternatives and would shift volume to DTC channels in response to a meaningful increase in marketplace take rates. Multi-homing data — showing that many sellers simultaneously maintain presences on multiple marketplace platforms as well as their own DTC storefronts — further supports the conclusion that marketplace platforms and DTC channels are demand-side substitutes from the seller's perspective.
Supply-Side Substitution. On the supply side, DTC e-commerce platforms, social commerce operators, and hybrid retail models have the ability and economic incentive to rapidly reposition to offer marketplace-style services. The technology required to operate a third-party seller marketplace is increasingly commoditized and available through cloud-based infrastructure. Two recent market entrants illustrate this dynamic: Brevity Social Commerce Inc., which launched in 2023 in Los Angeles, California, and integrates social media-driven commerce with third-party seller marketplace functionality; and Trove Marketplace Inc., which launched in 2024 in Chicago, Illinois, and operates a curated online marketplace targeting niche product categories. Both Brevity and Trove demonstrate that new marketplace platforms can be developed and brought to market within a short timeframe and with comparatively modest capital investment. Additionally, existing DTC platform providers such as Dunmore Services Inc. have expanded into marketplace-adjacent services, further blurring the line between marketplace and DTC channels.
Cross-Elasticity Analysis. Dr. Ramanathan's report will include econometric evidence of cross-price elasticity between marketplace platform services and DTC e-commerce channels. Specifically, Dr. Engström's team is constructing an empirical model using seller-level transaction data from CascadeMarket and Pinnacle, combined with publicly available data on DTC platform pricing and seller activity, to estimate the degree to which changes in marketplace take rates affect seller migration to DTC channels. Preliminary results, which are still being refined, indicate a statistically significant positive cross-price elasticity, supporting the conclusion that marketplace and DTC channels are in the same relevant product market.
Critique of the FTC's Market Segmentation. Dr. Ramanathan will directly critique the FTC's segmentation as economically unsound. The FTC's proposed market excludes Cascade's own direct e-commerce platform, CascadeDirect.com, which generated substantial GMV in 2024 and competes for many of the same consumer dollars that flow through CascadeMarket. The FTC's market also excludes social commerce platforms and hybrid retail models, all of which exercise a competitive constraint on marketplace platform pricing. By artificially drawing the market boundary around only third-party seller marketplace platforms, the FTC has gerrymandered the relevant market to achieve a preordained conclusion of high concentration.
Impact on Market Shares. The choice of market definition has a dramatic impact on calculated market shares and concentration levels. Under the FTC's narrow market definition, the FTC calculates that the combined entity would hold a 38.3% share of online marketplace platform services, with the following breakdown: Cascade (CascadeMarket) at 8.2%, Pinnacle at 30.1%, Vertex Commerce Inc. at 35.7%, Nomad Shops LLC at 14.6%, and all others at 11.4%.
Under Dr. Ramanathan's broader market definition of "all e-commerce retail," the combined entity's share of total U.S. e-commerce GMV is approximately 7.3%. This figure is derived as follows: Cascade's total e-commerce GMV (including both CascadeMarket and CascadeDirect.com) was approximately $43.7 billion in 2024; Pinnacle's GMV was approximately $11.4 billion in 2024; the combined entity's GMV is therefore approximately $55.1 billion; and total U.S. e-commerce GMV in 2024 was approximately $757 billion. The combined entity's share under the broader market is $55.1 billion divided by $757 billion, or approximately 7.3%.
Even measuring only the marketplace GMV of the combined entity (i.e., excluding CascadeDirect.com's direct retail sales), the combined marketplace GMV of approximately $14.5 billion represents only approximately 1.9% of total U.S. e-commerce GMV — a share that is far below any threshold that would trigger competitive concern under any formulation of merger analysis.
B. Opinion 2: Competitive Effects Analysis
Dr. Ramanathan's second opinion addresses the competitive effects of the proposed merger under both the broader and narrower market definitions.
Under the properly defined broader market, Dr. Ramanathan will opine that the proposed merger does not raise competitive concerns. A combined market share of approximately 7.3% is far below any threshold that would support a structural presumption of illegality under the 2023 Merger Guidelines, the case law applying Section 7 of the Clayton Act, or any reasonable analytical framework. At this concentration level, the merger would not materially alter the competitive dynamics of the U.S. e-commerce market.
Even under the FTC's narrow market definition, Dr. Ramanathan will present evidence that the merger is unlikely to produce anticompetitive effects for several reasons.
First, the presence of Vertex Commerce Inc., which commands a 35.7% share of the FTC's proposed market, and Nomad Shops LLC, which holds a 14.6% share, provides a substantial competitive constraint on the combined entity. Vertex Commerce is by far the largest marketplace platform in the United States and has the infrastructure, seller base, and consumer reach to discipline any attempt by the merged firm to increase take rates or reduce service quality. Nomad Shops, while smaller, is a well-capitalized and rapidly growing competitor. The "all others" segment, at 11.4%, includes a number of emerging platforms — including Brevity Social Commerce and Trove Marketplace — that represent additional competitive constraint.
Second, Dr. Ramanathan will present a multi-homing analysis demonstrating that a significant percentage of sellers on both CascadeMarket and Pinnacle simultaneously sell on Vertex Commerce, Nomad Shops, and/or their own DTC channels. High multi-homing rates are significant because they fundamentally undermine the FTC's unilateral effects theory. If sellers can readily shift sales volume to alternative platforms in response to a take-rate increase by the merged firm, the merged firm would lack the incentive and ability to exercise market power. The multi-homing data is being compiled from CascadeMarket and Pinnacle seller databases and will be supplemented by seller survey evidence.
Third, Dr. Ramanathan will offer a detailed critique of the FTC's upward pricing pressure model, which relies on seller-side diversion ratios between CascadeMarket and Pinnacle to project post-merger take-rate increases. Dr. Ramanathan will demonstrate that the FTC's diversion ratios are overstated because they fail to account for diversion to non-marketplace channels, including DTC e-commerce. When diversion to DTC channels is properly incorporated, the predicted upward pricing pressure is substantially diminished and falls within the range that does not indicate competitive concern.
C. Opinion 3: Merger-Specific Efficiencies
Dr. Ramanathan's third opinion addresses the substantial, verifiable, and merger-specific efficiencies that the proposed transaction is expected to generate. These efficiencies are relevant both as an independent procompetitive justification for the merger and as a factor rebutting any structural presumption under the Horizontal Merger Guidelines.
Dr. Ramanathan will quantify and verify a total of approximately $340 million in annual merger-specific efficiencies expected to be realized by Year 3 post-closing. These efficiencies fall into two principal categories:
Logistics and Fulfillment Cost Savings: $195 Million. The largest component of the merger-specific efficiencies derives from the integration of Pinnacle's approximately 185,000 active third-party sellers into Cascade's existing 22-warehouse nationwide fulfillment network. Pinnacle currently relies on a fragmented and inefficient third-party logistics ("3PL") network consisting of multiple independent fulfillment providers. This fragmented structure results in higher per-unit shipping and handling costs, longer delivery times, and inconsistent service quality for Pinnacle sellers and their customers. By migrating Pinnacle sellers onto Cascade's integrated fulfillment infrastructure — which includes strategically located warehouses in all major U.S. metropolitan areas, proprietary logistics management software, and negotiated carrier rates — the combined entity would achieve significant per-unit cost reductions. Dr. Ramanathan's analysis will include a bottoms-up model linking warehouse capacity utilization, per-unit shipping costs, handling costs, and distribution network optimization to arrive at the $195 million figure. This model will be constructed in coordination with data provided by Cascade's operations team and validated against internal Cascade efficiency estimates prepared by Patricia "Trish" Delacroix, Cascade's SVP of Marketplace & Platform Strategy.
Technology and Platform Synergies: $145 Million. The second component of the merger-specific efficiencies derives from the consolidation of redundant platform infrastructure, the development of unified seller tools, and the integration of shared data analytics capabilities. Both Cascade and Pinnacle currently maintain separate technology stacks for their marketplace platforms, including separate seller portals, separate payment processing systems, separate search and recommendation algorithms, and separate data analytics platforms. Consolidation of these systems would eliminate redundant infrastructure costs, reduce software licensing and maintenance expenses, and enable the development of more powerful unified seller tools that leverage the combined data sets of both platforms. Dr. Ramanathan's analysis will itemize these technology synergies and present a model of expected cost savings based on comparable technology integrations in prior platform mergers.
Merger-Specificity. Dr. Ramanathan will opine that these efficiencies are merger-specific — meaning they cannot be achieved absent the proposed transaction. With respect to the logistics efficiencies, Pinnacle cannot independently build or replicate a 22-warehouse nationwide fulfillment network. The capital investment required to construct and operate such a network from scratch is estimated at over $2 billion, which is well beyond Pinnacle's current financial capacity, particularly given its decelerating growth and increasing seller churn. With respect to the technology synergies, Cascade cannot organically replicate Pinnacle's seller base of 185,000 active sellers, which is the essential input required to generate the scale benefits of the unified platform.
Pass-Through to Consumers and Sellers. Dr. Ramanathan's analysis will include economic modeling demonstrating that a meaningful portion of the realized efficiencies would be passed through to both sides of the marketplace platform in the form of lower take rates for sellers, faster and more reliable delivery for consumers, and improved seller services and tools. This pass-through analysis draws on established economic literature regarding the relationship between marginal cost reductions and price adjustments in competitive and oligopolistic markets.
It is essential that Dr. Ramanathan's efficiency analysis be precisely coordinated with the testimony of Trish Delacroix, who prepared the internal efficiency estimates on which Dr. Ramanathan's independent assessment is based. Delacroix's testimony will provide the operational foundation — the factual inputs regarding warehouse capacity, per-unit costs, technology infrastructure, and integration planning — while Dr. Ramanathan's testimony will provide the economic framework for quantifying, verifying, and assessing merger-specificity. The numbers must match to the penny across both witnesses' testimony.
Additionally, we should obtain and review the efficiency analysis that was prepared by Mercer Hollis & Co. — the financial advisory firm engaged by Cascade's board of directors in connection with the fairness opinion for the transaction. Graham Mercer IV and Yuki Tanabe of Mercer Hollis oversaw that analysis. If there are any inconsistencies between the Mercer Hollis efficiency figures and Dr. Ramanathan's independent assessment, we must identify and resolve them before the expert report is finalized. Aaron Liu should coordinate with Monica Chen-Barrios at Harmon Ridgeway & Strauss LLP (Cascade's transactional counsel) to obtain the relevant Mercer Hollis materials.
D. Opinion 4: Pinnacle's Weakening Competitive Trajectory
Dr. Ramanathan's fourth opinion addresses Pinnacle's weakening competitive trajectory and its implications for the merger's competitive effects. This opinion is intended to demonstrate that Pinnacle's future competitive significance is diminishing, which materially reduces the anticompetitive potential of the transaction.
The key data points supporting this opinion are as follows:
• Pinnacle's year-over-year GMV growth rate decelerated from 28% in 2022 to 18% in 2023 to 9% in 2024, reflecting a sustained and accelerating decline in the platform's growth trajectory;
• Pinnacle's seller churn rate — the percentage of active sellers who cease transacting on the platform during a given year — increased from 12% in 2022 to 16% in 2023 to 21% in 2024, indicating growing dissatisfaction among Pinnacle's seller base and increasing competitive pressure from alternative platforms;
• Pinnacle's share of total marketplace GMV within the FTC's proposed market has plateaued and is projected to decline as Vertex Commerce, Nomad Shops, and emerging entrants capture a growing share of seller activity; and
• Pinnacle faces escalating operational challenges, including rising customer acquisition costs, increasing infrastructure expenses, and competitive pressure from larger, better-capitalized platforms.
Dr. Ramanathan will opine that these data points collectively demonstrate that Pinnacle's competitive trajectory is weakening and that its future competitive significance is likely to be substantially less than its current market position suggests. In the context of merger analysis, a weakening competitor is less likely to be a significant source of future competition, which reduces the merger's potential to diminish competition.
It is important to note that Dr. Ramanathan will not offer a formal "failing firm" defense opinion. We have conducted a separate analysis and concluded that Pinnacle does not satisfy the strict elements of the failing-firm defense as articulated by the Supreme Court and the Horizontal Merger Guidelines — specifically, Pinnacle is not facing imminent business failure, it has not demonstrated that it would be unable to reorganize successfully under Chapter 11, and it has not shown that there is no alternative acquirer whose acquisition would pose a lesser danger to competition. However, Dr. Ramanathan need not establish a formal failing-firm defense in order to present the weakening-competitor data as relevant to competitive effects. The economic significance of Pinnacle's declining trajectory is a legitimate and well-recognized consideration in merger analysis, distinct from the legal failing-firm defense.
This opinion will be coordinated with the testimony of Rajiv Chandravar, Pinnacle's Co-Founder and CEO, and Thomas Breck, Pinnacle's CFO, both of whom can provide first-hand corroborating testimony regarding Pinnacle's competitive challenges. Chandrasekaran can speak to the strategic pressures facing Pinnacle, the loss of key sellers to competing platforms, and the difficulty of competing with Vertex Commerce's scale and resources. Breck can provide detailed financial data points supporting the growth deceleration and can speak to the cost structure challenges that have contributed to Pinnacle's weakening position.
E. Opinion 5: Ease of Entry and Expansion
Dr. Ramanathan's fifth and final opinion addresses the ease of entry into, and expansion within, the marketplace platform services market, which serves as an additional factor rebutting any structural presumption of competitive harm.
Dr. Ramanathan will present evidence of recent entry demonstrating that the marketplace platform services market is not protected by high barriers to entry. Two recent entrants are particularly significant:
• Brevity Social Commerce Inc., which launched in 2023 in Los Angeles, California, operates a social commerce platform that integrates third-party seller marketplace functionality with social media-driven consumer engagement. Brevity has rapidly attracted sellers and consumers by offering a differentiated user experience and competitive take rates.
• Trove Marketplace Inc., which launched in 2024 in Chicago, Illinois, operates a curated online marketplace targeting niche and specialty product categories. Trove has attracted a growing base of sellers seeking an alternative to the larger, more generalized marketplace platforms.
The successful entry of Brevity and Trove within the past two years demonstrates that the barriers to entry in online marketplace services are low. The key requirements for entry — technology infrastructure, seller recruitment, and consumer marketing — are increasingly accessible. Cloud computing infrastructure (available through Ridgeway Industries, Aldermere Technologies, Crestline Systems, and other providers) eliminates the need for substantial upfront capital investment in physical technology infrastructure. Marketplace platform software is available through open-source frameworks and commercial software-as-a-service providers. Seller recruitment can be accomplished through competitive take rates, targeted marketing, and differentiated value propositions.
Dr. Ramanathan will also present evidence of expansion by existing competitors. Vertex Commerce Inc. and Nomad Shops LLC both have substantial capacity to grow their marketplace platform businesses and are actively competing for sellers through investments in fulfillment infrastructure, seller tools, and marketing programs. Vertex Commerce's dominant position in the market — with a 35.7% share under the FTC's own market definition — reflects its ability and incentive to compete aggressively for sellers, which would constrain any attempt by the merged firm to exercise market power.
The combination of demonstrated recent entry and demonstrated capacity for expansion by existing competitors provides additional grounds for concluding that the proposed merger is unlikely to produce anticompetitive effects, even under the FTC's narrow market definition.
ATTORNEY WORK PRODUCT — PRIVILEGED AND CONFIDENTIAL
IV. Coordination Between Expert and Fact Witness Testimony
The persuasive impact of Dr. Ramanathan's expert testimony at the evidentiary hearing depends critically on the factual foundation established by the defense's fact witnesses. Fact witnesses provide the real-world context, operational detail, and corporate perspective that give economic expert testimony its grounding and credibility. This section addresses the coordination between Dr. Ramanathan's testimony and the testimony of the defense's fact witnesses, including the alignment of specific fact witnesses with specific expert opinions, the recommended sequencing of witnesses at the hearing, and the measures necessary to avoid gaps or inconsistencies between expert and fact testimony.
A. Witness-Expert Alignment Matrix
The following matrix identifies the fact witnesses who provide the factual foundation for each of Dr. Ramanathan's five opinions and describes the specific subjects each witness should address:
Margaret "Meg" Thornberry — Cascade Retail Holdings CEO and Chairwoman of the Board. Thornberry will testify regarding the strategic rationale for the acquisition of Pinnacle, including the procompetitive motivations driving the transaction, the vision for an integrated omnichannel platform combining CascadeMarket, CascadeDirect.com, and Pinnacle into a unified e-commerce ecosystem, and the competitive landscape as perceived by Cascade's senior leadership. Thornberry's testimony supports Opinion 1 (broader competitive landscape, including the characterization of the competitive environment as encompassing all e-commerce retail rather than a narrow marketplace segment) and Opinion 3 (strategic and operational rationale for the efficiencies expected from the combination).
Patricia "Trish" Delacroix — Cascade SVP, Marketplace & Platform Strategy. Delacroix will testify regarding the operational details of the integration plan, the capabilities and scale of Cascade's 22-warehouse nationwide fulfillment network, the specific efficiency projections developed by Cascade's operations and strategy teams (including the $195 million in logistics and fulfillment savings and the $145 million in technology and platform synergies), and the competitive dynamics of CascadeMarket's marketplace business. Delacroix's testimony supports Opinion 3 (efficiencies — providing the factual foundation for Dr. Ramanathan's quantification and verification) and Opinion 2 (competitive effects — providing operational perspective on competitive constraints and multi-homing behavior among CascadeMarket sellers).
Rajiv Chandravar — Pinnacle Commerce Co-Founder and CEO. Chandrasekaran will testify regarding Pinnacle's competitive challenges, including the deceleration of GMV growth, the increase in seller churn, the competitive pressures exerted by Vertex Commerce and other platforms, and the strategic difficulties facing a mid-tier marketplace platform in an increasingly competitive e-commerce landscape. Chandrasekaran's testimony supports Opinion 2 (competitive effects — illustrating the competitive constraints that Pinnacle faces, which would persist and intensify post-merger) and Opinion 4 (weakening competitor — providing first-hand testimony on Pinnacle's declining competitive trajectory).
Thomas Breck — Pinnacle CFO. Breck will testify briefly regarding Pinnacle's financial condition, including the specific financial metrics reflecting growth deceleration, cost structure pressures, and the financial projections that inform the assessment of Pinnacle's future competitive position. Breck's testimony supports Opinion 4 (weakening competitor — providing the detailed financial data that underpins Dr. Ramanathan's analysis of Pinnacle's declining trajectory).
B. Sequencing Recommendation
We recommend the following witness order at the evidentiary hearing, which is designed to build the factual record in a logical sequence before Dr. Ramanathan presents her expert opinions:
1. Meg Thornberry (approximately half day) — Thornberry should testify first to establish the corporate strategy and procompetitive rationale for the acquisition. Her testimony sets the narrative frame for the entire defense case: this is a merger driven by procompetitive motivations, occurring in a broad and dynamic e-commerce market.
2. Trish Delacroix (approximately half day) — Delacroix should testify second to provide the detailed operational foundation for the efficiency claims. Her testimony establishes the specific facts — warehouse locations, per-unit cost data, technology infrastructure details, integration planning — that Dr. Ramanathan's efficiency analysis is built upon.
3. Rajiv Chandravar (approximately half day; called by Whitfield, Greer & Tanaka on behalf of Pinnacle) — Chandrasekaran should testify third to present Pinnacle's perspective on its competitive challenges. His testimony establishes the factual predicate for Dr. Ramanathan's weakening-competitor opinion.
4. Thomas Breck (brief direct examination; called by Whitfield, Greer & Tanaka) — Breck should testify fourth to present the financial data supporting the weakening-competitor narrative. His testimony is focused and discrete, providing specific financial metrics that corroborate Chandrasekaran's broader strategic testimony.
5. Dr. Priya Ramanathan (full day) — Dr. Ramanathan should testify last among the defense witnesses. By testifying after all fact witnesses, she can reference their testimony and supporting documents, synthesize the factual record into a coherent economic narrative, and present her expert opinions as the capstone of the defense's evidentiary presentation.
We note that Whitfield, Greer & Tanaka LLP — specifically Diana Whitfield (name partner) and Kenneth Oshiro (Senior Associate) — will lead the direct examinations of Chandrasekaran and Breck. We should coordinate on the substance of those examinations pursuant to the joint defense and common interest agreement dated July 1, 2025. This coordination is addressed in greater detail in Section X below.
C. Avoidance of Expert-Fact Testimony Gaps
One of the most significant risks in any merger challenge evidentiary hearing is the emergence of inconsistencies between fact witness testimony and expert testimony. FTC counsel will be listening carefully for any discrepancy — even a minor one — that can be used to impeach the credibility of either the fact witness or the expert. We must take affirmative steps to prevent such inconsistencies.
The following specific coordination measures are required:
• Delacroix's testimony regarding the efficiency figures must be precisely consistent with Dr. Ramanathan's analysis. The $195 million in logistics and fulfillment savings, the $145 million in technology and platform synergies, and the $340 million total must match exactly across both witnesses' testimony, including the underlying assumptions, time horizons, and calculation methodologies. If there is any discrepancy between the operational estimates developed by Cascade's team and the figures reflected in Dr. Ramanathan's expert report, the discrepancy must be identified and resolved before either witness testifies.
• Chandrasekaran's characterization of Pinnacle's competitive position must be consistent with the data inputs that Dr. Ramanathan relies upon, including the specific GMV growth rates (28% in 2022, 18% in 2023, 9% in 2024), seller churn rates (12% in 2022, 16% in 2023, 21% in 2024), and any qualitative characterizations of Pinnacle's competitive trajectory. If Chandrasekaran testifies that Pinnacle's competitive challenges are less severe than the data suggests, or if he characterizes Pinnacle's future prospects more optimistically than Dr. Ramanathan's analysis supports, FTC counsel will exploit the inconsistency.
• Pre-testimony preparation sessions (discussed in detail in Section VIII below) should include at least one joint session in which the expert and key fact witnesses — particularly Delacroix — review the critical data points together and confirm alignment. This session should occur after Dr. Ramanathan's affirmative report is finalized but before the hearing.
ATTORNEY WORK PRODUCT — PRIVILEGED AND CONFIDENTIAL
V. Demonstrative Exhibits Strategy
Demonstrative exhibits will play a critical role at the evidentiary hearing. Judge Johannsen will be asked to absorb five days of dense economic testimony, including competing expert analyses of market definition, market shares, HHI calculations, diversion ratios, efficiency claims, and competitive effects. Clear, visually compelling demonstrative exhibits will be essential to making Dr. Ramanathan's testimony accessible and persuasive.
A. Proposed Demonstrative Exhibits
We propose the preparation of seven demonstrative exhibits for use during Dr. Ramanathan's direct testimony. Each demonstrative is described below, including its content, purpose, and the opinion it supports.
Demonstrative 1 — Market Definition Comparison Chart. This demonstrative will present a side-by-side comparison of the FTC's narrow market definition ("online marketplace platform services for third-party sellers in the United States") and the defendants' broader market definition ("all e-commerce retail"). On the left side, the demonstrative will display the FTC's market, showing the combined entity's 38.3% share. On the right side, the demonstrative will display the broader market, showing the full $757 billion U.S. e-commerce market with the combined entity's approximately $55.1 billion in GMV represented as a small slice — approximately 7.3% of the total. The visual contrast between the two market definitions is the single most important graphic in our presentation, and the demonstrative should be designed for maximum visual impact. This demonstrative supports Opinion 1.
Demonstrative 2 — Market Share Pie Charts. This demonstrative will consist of two pie charts presented side by side. The first pie chart will display market shares under the FTC's proposed narrow market: Cascade at 8.2%, Pinnacle at 30.1%, Vertex Commerce at 35.7%, Nomad Shops at 14.6%, and all others at 11.4%. The second pie chart will display market shares under the defendants' broader market definition, showing the combined entity as approximately 7.3% of total U.S. e-commerce GMV, with the vast majority of the pie representing other market participants. This demonstrative is designed to visually illustrate the distortive effect of the FTC's narrow market definition — when the market boundary is drawn properly, the combined entity is a modest participant in a vast and competitive market. This demonstrative supports Opinions 1 and 2.
Demonstrative 3 — HHI Impact Under Alternative Markets. This demonstrative will present a bar chart comparing HHI levels under the FTC's narrow market definition and under the defendants' broader market definition. Under the FTC's market, the bars will show pre-merger HHI of 2,361 and post-merger HHI of 2,856, with the delta of 495 highlighted — both exceeding the Merger Guidelines' "highly concentrated" thresholds. Under the all-e-commerce market definition, the bars will show substantially lower HHI levels, well below the concentration thresholds that would trigger any competitive concern. A horizontal reference line at HHI 2,500 (the Merger Guidelines' threshold for "highly concentrated" markets) will provide a visual benchmark. This demonstrative supports Opinions 1 and 2.
Demonstrative 4 — Pinnacle's Competitive Trajectory Timeline. This demonstrative will present a line graph with two data series plotted over time (2022, 2023, 2024). The first series will show Pinnacle's year-over-year GMV growth rate declining from 28% in 2022 to 18% in 2023 to 9% in 2024, depicted as a downward-sloping line. The second series will show Pinnacle's seller churn rate increasing from 12% in 2022 to 16% in 2023 to 21% in 2024, depicted as an upward-sloping line. The two crossing trends — declining growth and increasing churn — create a powerful visual narrative of a platform in competitive decline. Key events (e.g., the entry of Brevity Social Commerce in 2023, the entry of Trove Marketplace in 2024) may be annotated on the timeline to provide additional context. This demonstrative supports Opinion 4.
Demonstrative 5 — Efficiency Waterfall Chart. This demonstrative will present a waterfall chart illustrating the buildup of the $340 million in annual merger-specific efficiencies by Year 3 post-closing. The waterfall will begin at zero and build upward in two steps: a $195 million block representing logistics and fulfillment cost savings (with a sub-annotation referencing Cascade's 22-warehouse network and the integration of Pinnacle's 185,000 sellers), followed by a $145 million block representing technology and platform synergies (with a sub-annotation referencing platform consolidation, unified seller tools, and shared data analytics). The cumulative total of $340 million will be displayed at the top of the waterfall. This demonstrative supports Opinion 3.
Demonstrative 6 — Seller Multi-Homing Diagram. This demonstrative will present a Venn diagram or Sankey diagram illustrating the overlap of sellers across CascadeMarket, Pinnacle, Vertex Commerce, Nomad Shops, and DTC channels. The diagram should show that a substantial percentage of sellers on CascadeMarket and Pinnacle also sell on one or more other platforms and/or operate their own DTC storefronts, illustrating the extensive multi-homing behavior that undermines the FTC's unilateral effects theory. The specific percentages will be determined by Brindoval's analysis of the seller data, which is currently in progress. This demonstrative supports Opinion 2.
Demonstrative 7 — New Entry Timeline. This demonstrative will present a horizontal timeline showing the dates of key market entries in the online marketplace and e-commerce space. The timeline will include: CascadeMarket's launch on June 1, 2019; Pinnacle's initial public offering on September 18, 2020; the launch of Brevity Social Commerce in 2023; and the launch of Trove Marketplace in 2024. The timeline is designed to illustrate the dynamic and rapidly evolving nature of the marketplace, undermining the FTC's implicit assumption that the market structure is static and unlikely to be disrupted by future entry. This demonstrative supports Opinion 5.
B. Preparation and Review Process
The preparation and review of demonstrative exhibits will follow the timeline set forth below:
• August 10, 2025: Dr. Engström and the Brindoval Analytics team will deliver initial drafts of all seven demonstrative exhibits, using the underlying data from their analysis. These initial drafts will be in digital format suitable for review and iteration.
• August 10–14, 2025: Aaron Liu will coordinate the graphic design review process, working with Brindoval's internal design team and Calderwood & Harkness's litigation support team to refine the visual presentation, ensure accuracy, and optimize the demonstratives for courtroom display.
• August 15, 2025: All demonstrative exhibits will be reviewed by Dr. Ramanathan for substantive accuracy and consistency with her expert opinions, and by Howard Bellamy for trial presentation strategy, visual impact, and narrative coherence.
• August 15–September 2, 2025: Final revisions and production. Any demonstrative exhibits that require revision based on the expert review or the receipt of Dr. Keenan's report (expected August 18) will be updated during this period.
• September 2, 2025: All demonstrative exhibits finalized in both digital and print formats.
• Per Pretrial Order: Demonstrative exhibits will be identified on the defendants' exhibit list and disclosed to FTC counsel in advance of the hearing, in accordance with any applicable pretrial order requirements established by Judge Johannsen. We anticipate that the pretrial order will require disclosure of demonstrative exhibits at least five business days before the hearing.
ATTORNEY WORK PRODUCT — PRIVILEGED AND CONFIDENTIAL
VI. Anticipated Cross-Examination of Dr. Wallace Keenan (FTC Expert)
This section addresses the anticipated cross-examination of Dr. Wallace Keenan, the FTC's testifying expert. Our cross-examination strategy is designed to undermine the credibility and reliability of Dr. Keenan's opinions on market definition, concentration, and competitive effects, while preserving themes that support Dr. Ramanathan's affirmative testimony.
A. Expected Opinions from Dr. Keenan
Based on the FTC's complaint, the structure of the FTC's preliminary injunction motion, and Dr. Keenan's prior work in comparable digital platform merger cases, we anticipate that Dr. Keenan's affirmative expert report will present the following principal opinions:
1. Market Definition. Dr. Keenan will support the FTC's proposed relevant product market of "online marketplace platform services for third-party sellers in the United States." He will likely present this market as a distinct product market separate from DTC e-commerce, social commerce, and other forms of online retail, based on the assertion that marketplace platforms offer a functionally distinct service — connecting third-party sellers with consumers through a centralized platform — that is not reasonably interchangeable with other e-commerce channels from the seller's perspective.
2. SSNIP Test. Dr. Keenan will present a SSNIP test analysis purporting to demonstrate that a hypothetical monopolist of marketplace platform services could profitably impose a small but significant non-transitory increase in seller take rates — from the current industry range of approximately 16–17% to a level approximately 5–10% higher — without losing a sufficient volume of sellers to render the increase unprofitable. This analysis would define marketplace platform services as the smallest group of products for which a hypothetical monopolist could profitably raise prices, thereby confirming the FTC's narrow market definition.
3. HHI Calculations. Dr. Keenan will present HHI calculations showing pre-merger concentration of 2,361 and post-merger concentration of 2,856, with a delta of 495. He will note that both the post-merger HHI and the delta substantially exceed the 2023 Merger Guidelines' thresholds for a presumption of illegality in "highly concentrated" markets (post-merger HHI exceeding 2,500 with a delta exceeding 200).
4. Unilateral Effects. Dr. Keenan will present a unilateral effects analysis based on seller-side diversion ratios between CascadeMarket and Pinnacle. This analysis will purport to demonstrate significant competitive overlap between the two platforms — i.e., that a substantial share of sellers who would leave one platform in response to a take-rate increase would divert to the other platform. Using these diversion ratios, Dr. Keenan will project upward pricing pressure on seller take rates post-merger.
5. Efficiency Critique. Dr. Keenan may opine that Cascade's claimed $340 million in annual merger-specific efficiencies are not verifiable, not merger-specific, or unlikely to be achieved in the magnitude claimed. Specifically, he may argue that Pinnacle could independently contract with third-party logistics providers to improve its fulfillment capabilities without the need for a full merger with Cascade.
B. Lines of Cross-Examination
The following lines of cross-examination are proposed for Dr. Keenan. We will finalize these lines after reviewing his actual affirmative report (expected August 18, 2025), but the core themes are expected to remain consistent with the following:
1. Failure to Account for Supply-Side Substitution in SSNIP Test. Dr. Keenan's SSNIP test likely focuses exclusively on demand-side substitution — whether sellers would leave marketplace platforms in response to a take-rate increase. However, a properly conducted SSNIP test must also consider supply-side substitution — whether firms currently outside the hypothetical monopolist's market could rapidly and profitably begin offering marketplace platform services in response to a take-rate increase. We will challenge Dr. Keenan on whether his SSNIP test considered the ability of DTC platform providers (such as Dunmore Services Inc. and Granite Harbor Services Inc.), social commerce platforms (such as Brevity Social Commerce), and hybrid retail models to rapidly reposition and offer marketplace services. Did he specifically analyze whether Brevity Social Commerce and Trove Marketplace would expand their marketplace offerings in response to a take-rate increase? If not, his SSNIP test omits a critical dimension of competitive constraint and its results are unreliable.
2. Two-Sided Market Analysis. We will probe whether Dr. Keenan properly accounted for the two-sided nature of marketplace platforms. Under the framework articulated by the Supreme Court's decision in Ohio v. Halcyon Corporation, 585 U.S. 529 (2018), the competitive analysis of a two-sided platform must consider the effects on both sides of the platform. Did Dr. Keenan analyze both seller-side and buyer-side (consumer-side) effects? A take-rate increase on sellers could reduce seller participation on the platform, which would in turn reduce product range available to consumers, reducing consumer demand and undermining the platform's value proposition on both sides. If Dr. Keenan analyzed only the seller side without considering the feedback effects on the consumer side, his competitive effects analysis is incomplete.
3. Treatment of Multi-Homing. We will question the reliability of Dr. Keenan's seller-side diversion ratios by probing his treatment of multi-homing behavior. If a substantial percentage of Pinnacle sellers also sell on Vertex Commerce, Nomad Shops, or DTC channels, the diversion ratio between CascadeMarket and Pinnacle is overstated because sellers who multi-home across multiple platforms have additional options for redirecting their sales volume in response to a take-rate increase. We will request Dr. Keenan to disclose how many sellers in his diversion ratio analysis he treated as single-homing (selling exclusively on one marketplace platform) versus multi-homing (selling on multiple platforms). If his model assumes single-homing when in fact multi-homing is prevalent, his diversion ratios — and the upward pricing pressure projections derived from them — are systematically biased upward.
4. Inconsistency in Market Share Calculations. We will highlight an internal tension in the FTC's market share calculations. The FTC's own market shares — Cascade at 8.2%, Pinnacle at 30.1%, Vertex Commerce at 35.7%, Nomad Shops at 14.6%, and all others at 11.4% — treat the "all others" category at 11.4%, which includes Brevity Social Commerce, Trove Marketplace, and numerous smaller platforms. If these "others" represent a meaningful competitive fringe — and 11.4% is not negligible — they collectively exercise a competitive constraint on the larger platforms. Dr. Keenan cannot simultaneously treat these firms as too small to matter for competitive effects purposes while including them in his market for market share calculation purposes. Either they are part of the competitive landscape (in which case they constrain market power) or they are not (in which case the market shares should be recalculated without them).
5. Static vs. Dynamic Analysis. We will probe whether Dr. Keenan's analysis adequately accounts for the rapid pace of entry, innovation, and competitive repositioning in the e-commerce sector. Marketplace platforms that did not exist three years ago — Brevity Social Commerce and Trove Marketplace — now compose part of the competitive landscape. The pace of technological change and business model innovation in e-commerce is far more rapid than in traditional industries. A static analysis of market shares and concentration at a single point in time may significantly overstate the merger's competitive significance if the market structure is likely to evolve rapidly in the near future. Did Dr. Keenan perform any dynamic or forward-looking analysis, or is his opinion based entirely on a snapshot of current market shares?
6. Treatment of Pinnacle's Weakening Position. We will probe whether Dr. Keenan's competitive effects model incorporates Pinnacle's decelerating growth trajectory (28% YoY in 2022 declining to 9% YoY in 2024) and increasing seller churn (12% in 2022 increasing to 21% in 2024). If Dr. Keenan's model treats Pinnacle's current 30.1% market share as static — without accounting for the likelihood that Pinnacle's share will decline over time due to competitive erosion — his model overstates Pinnacle's future competitive significance and therefore overstates the merger's potential to diminish competition. This is particularly important because the relevant question under Section 7 of the Clayton Act is whether the merger may substantially lessen future competition, not whether it reduces the number of competitors at the current moment.
7. Prior Engagements and Potential Bias. We will explore Dr. Keenan's history of engagements on behalf of the FTC and other government antitrust agencies. If Dr. Keenan has a pattern of consistently testifying in support of narrow market definitions and against proposed mergers on behalf of government agencies, this pattern is relevant to the weight the Court should give his opinions. We will also assess whether Dr. Keenan has ever opined in favor of a broader market definition in a digital platform case — whether in testimony, published academic work, or consulting reports. Any prior statements supporting broader market definitions in digital platform contexts would be valuable impeachment material.
C. Exhibits for Cross-Examination
The following exhibits should be prepared and organized for use during the cross-examination of Dr. Keenan:
• The FTC's own Complaint allegations, particularly paragraphs 42 and 47, which set forth the market shares and HHI calculations that form the basis of the FTC's structural case. These paragraphs can be used to anchor questions about the "all others" category and the static nature of the FTC's market share analysis.
• Any publications or prior testimony by Dr. Keenan on digital platform market definition, two-sided markets, or merger analysis in technology sectors. We should conduct a comprehensive search of Dr. Keenan's published