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1032-00006 · Halcyon Semiconductor Inc · Engagement & Administration
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MEMORANDUM

PRIVILEGED AND CONFIDENTIAL — ATTORNEY WORK PRODUCT

TO: Leonard Cross, Partner, Tax Sylvia Hartwell, Partner, Tax

FROM: Leila Nazari, Senior Associate, Tax

CC: Robert Jansen, Associate, Tax

DATE: March 12, 2025

RE: Project Plan & Timeline — Bilateral APA and Transfer Pricing Documentation, Halcyon Semiconductor AG / Halcyon Semiconductor Inc.

C&H Matter Number: 1032-00006

Billing Code: HSAG-TP-2025

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I. Purpose and Executive Summary

The purpose of this memorandum is to set forth the comprehensive project plan, work streams, deliverable milestones, responsible team members, and coordination framework for the bilateral Advance Pricing Agreement ("APA") and contemporaneous transfer pricing documentation engagement on behalf of Halcyon Semiconductor AG ("HSAG") and Halcyon Semiconductor Inc. ("HSI"). This engagement was opened on February 3, 2025, and the engagement letter was fully executed on March 10, 2025.

The core objective of this engagement is to negotiate and secure a bilateral APA between the Internal Revenue Service, Advance Pricing and Mutual Agreement Program ("IRS APMA"), and the German Bundeszentralamt für Steuern ("BZSt") under Article 25 of the Convention Between the United States of America and the Federal Republic of Germany for the Avoidance of Double Taxation and the Prevention of Fiscal Evasion with Respect to Taxes on Income and Capital and to Certain Other Taxes (signed June 29, 2006) (the "US-Germany Income Tax Treaty") and Revenue Procedure 2015-41. The APA will address three categories of intercompany transactions between HSAG and HSI, with aggregate annual intercompany flows of approximately €1.28 billion (FY 2024: €1,280,600,000).

The proposed APA term encompasses five prospective tax years commencing January 1, 2025, through December 31, 2029, together with a rollback request covering three prior tax years commencing January 1, 2022, through December 31, 2024. The total covered period will therefore span eight tax years. In parallel with the APA application, this engagement requires the preparation of comprehensive contemporaneous transfer pricing documentation for HSI to satisfy United States documentation requirements under Sections 482 and 6662(e) of the Internal Revenue Code ("IRC") and the applicable Treasury Regulations, as well as coordinated documentation compliant with Organisation for Economic Co-operation and Development ("OECD") Base Erosion and Profit Shifting ("BEPS") Action 13 standards and German documentation requirements under the Außensteuergesetz ("AStG") and the Gewinnabgrenzungsaufzeichnungsverordnung ("GAufzV").

The engagement is subject to the following fee structure: Phase 1, encompassing the APA application and contemporaneous documentation, is capped at $1,850,000; Phase 2, encompassing APA negotiation support estimated to run from 2025 through 2027, is capped at $975,000; and the total engagement fee cap is $2,825,000.

This memorandum organizes the project into six work streams distributed across three phases, identifies all deliverables and corresponding deadlines, assigns responsibility among the Calderwood & Harkness LLP ("C&H") engagement team, and describes coordination protocols with German counsel Kettner Pflüger Rechtsanwälte ("KP") and economic consultant Meridian Economics GmbH ("Meridian"). It is intended to serve as the governing project management document for the duration of the engagement and will be updated on a quarterly basis or as circumstances require.

II. Engagement Team and Roles

A. Calderwood & Harkness LLP — Internal Team

The following C&H attorneys have been assigned to this engagement. All time entries are to be recorded under billing code HSAG-TP-2025, and hourly rates are as set forth in the executed engagement letter.

B. Client Contacts

The following individuals at HSAG and HSI have been identified as the primary client contacts for this engagement. All day-to-day communications should be directed through the designated client leads, with escalation protocols as described in Section XII.D below.

C. External Advisors

The following external advisors have been engaged or are otherwise involved in the engagement. Coordination protocols for each are described in detail in Section XII below.

III. Scope of Covered Transactions

The bilateral APA will cover three categories of controlled transactions between HSAG and HSI. The following is a brief summary of each transaction category, the relevant intercompany agreement, the financial magnitude of the transaction, and the proposed transfer pricing methodology. A more detailed analysis of each transaction will be developed through Work Streams 1 and 2 and incorporated into the APA application and contemporaneous documentation.

A. Tangible Goods — Wafer/Die Sales (HSAG → HSI)

HSAG manufactures advanced semiconductor wafers and singulated die at its fabrication facilities located in Dresden, Germany (Fab 1 and Fab 2, Industriepark Klotzsche, Zur Wetterwarte 50, 01109 Dresden) and Chemnitz, Germany (Fab 3, Technologiepark Chemnitz, Annaberger Straße 240, 09125 Chemnitz). These fabrication facilities produce semiconductors across multiple advanced process nodes, including 7nm, 5nm, and 3nm technologies. HSAG sells finished wafers and singulated die to HSI under the Master Intercompany Supply Agreement, which became effective January 1, 2019, and was amended on July 1, 2022. HSI serves as the primary distributor of these products in North America, selling to original equipment manufacturers ("OEMs") and other customers in the automotive, industrial Internet of Things ("IoT"), and data-center market segments.

For FY 2024, the aggregate intercompany goods transferred under this arrangement totaled €987,600,000, which is approximately $1,076,000,000 at the average 2024 EUR/USD exchange rate of 1.0896. This represents the largest of the three transaction categories by value.

The proposed transfer pricing method for this transaction is the Transactional Net Margin Method ("TNMM"), as referenced in the OECD Transfer Pricing Guidelines, which corresponds to the Comparable Profits Method ("CPM") under U.S. Treasury Regulations. HSI will serve as the tested party, as it is the least complex entity in the intercompany supply chain. The profit level indicator ("PLI") will be the operating margin on net resales. Based on the preliminary benchmarking analysis described in Section VI, the expected interquartile range ("IQR") is 2.8% to 6.1%, with a median of 4.4%. HSI's FY 2024 operating margin of 4.80% falls within this IQR.

B. Royalties — IP License (HSI → HSAG)

HSI pays royalties to HSAG under the IP License Agreement, which became effective January 1, 2019, for the use of proprietary semiconductor process technology, design libraries, and related intangible property owned by HSAG. The licensed intangibles are fundamental to the semiconductor products that HSI distributes in North America and include patents, trade secrets, process know-how, and proprietary design libraries developed through HSAG's extensive research and development activities.

For FY 2024, royalty payments from HSI to HSAG under this agreement totaled €68,400,000, which is approximately $70,500,000 at the weighted average payment-date EUR/USD exchange rate of 1.0307. The contractual royalty rate is 6.0% on IP-attributable revenues.

The proposed transfer pricing method for this transaction is the Comparable Uncontrolled Transaction ("CUT") method, based on a search for comparable uncontrolled license agreements involving semiconductor intellectual property. This method will be corroborated by a residual profit split analysis. Based on preliminary benchmarking results, the expected IQR for comparable royalty rates is 3.5% to 8.2%, with a median of 5.6%. HSAG's 6.0% royalty rate falls within the IQR, above the median, supporting its arm's-length character.

C. Cost-Sharing Contributions — R&D CSA (HSI → HSAG)

HSAG and HSI entered into a Qualified Cost Sharing Arrangement ("CSA") effective July 15, 2018, pursuant to which HSI participates in the funding of HSAG's research and development activities in exchange for the right to exploit the resulting intangible property in North America. Under the CSA, HSI's anticipated benefit share is 22.5%, reflecting its North American exploitation rights.

For FY 2024, total qualified R&D costs incurred under the CSA were €998,200,000. HSI's cost-sharing contribution, based on its 22.5% benefit share, was €224,600,000, approximately $231,300,000. The CSA also required a platform contribution transaction ("PCT") buy-in payment of $312,500,000, which was made on July 15, 2018. The PCT payment was determined using the income method with an 11.8% discount rate and a 15-year projection period, as valued by Stonebridge Valuation Partners LLC (Marcus Reinhardt, Managing Director) at the time of the CSA's inception.

The proposed transfer pricing method for the CSA is the income method as prescribed by Treasury Regulation §1.482-7. HSI's 22.5% anticipated benefit share is subject to review and triennial adjustment in accordance with the CSA terms and applicable regulations, including the periodic adjustment provisions under Treasury Regulation §1.482-7.

D. Aggregate Intercompany Flows (FY 2024)

The aggregate FY 2024 intercompany flows across the three covered transaction categories are as follows:

• Tangible Goods (Wafer/Die Sales): €987,600,000

• Royalties (IP License): €68,400,000

• Cost-Sharing Contributions (R&D CSA): €224,600,000

• Total: €1,280,600,000 (approximately €1.28 billion)

The magnitude of these intercompany flows underscores the significance of securing certainty through the bilateral APA process and the importance of maintaining robust contemporaneous transfer pricing documentation throughout the covered period.

IV. Work Stream Structure

The engagement is organized into six discrete work streams distributed across three phases. The following provides an overview of this structure, which is described in detail in Sections V through X below.

Phase 1A — Functional & Economic Analysis

• Work Stream 1: Functional Analysis

• Work Stream 2: Economic Analysis and Benchmarking

Phase 1B — Contemporaneous TP Documentation

• Work Stream 3: Contemporaneous Transfer Pricing Documentation (Master File, US Local Files, Penalty Protection Statement)

Phase 1C — APA Application

• Work Stream 4: APA Application (Pre-Filing Memorandum, Pre-Filing Conference, Formal APA Application and Appendices)

Phase 2 — APA Negotiation Support

• Work Stream 5: APA Negotiation Support (Negotiation Strategy, IDR Responses, Supplemental Economic Analyses, Draft APA Agreement, Annual Compliance Report Template)

Phase 3 — Intercompany Agreement Review & Drafting

• Work Stream 6: Intercompany Agreement Review and Drafting (Review Memorandum, Amended Supply Agreement, Amended IP License Agreement)

It should be noted that Work Streams 1 through 4 and Work Stream 6 run concurrently during Phase 1, with significant interdependencies described below. The functional analysis (Work Stream 1) and economic analysis (Work Stream 2) feed directly into the contemporaneous documentation (Work Stream 3) and the APA application (Work Stream 4). Work Stream 6 (intercompany agreement review) is initiated during Phase 1 so that any issues with existing agreements can be identified and addressed in advance of the APA filing, though the amended agreements themselves will not be finalized until the APA is concluded. Work Stream 5 is ongoing from the post-filing period through the conclusion of APA negotiations, which is estimated to occur between 2025 and 2027 but may extend beyond that timeframe depending on the pace of competent authority discussions.

V. Work Stream 1 — Functional Analysis

A. Deliverables

The following deliverables will be produced under Work Stream 1:

1. Functional Analysis Interview Protocol — A standardized questionnaire template designed for use in conducting structured interviews with key personnel of HSI and HSAG, covering functions performed, assets employed, and risks assumed by each entity.

2. Functional Analysis Memorandum — HSI — A comprehensive memorandum documenting the functions, assets, and risks of HSI in connection with the three categories of covered intercompany transactions.

3. Functional Analysis Memorandum — HSAG (Manufacturing & IP) — A comprehensive memorandum documenting the functions, assets, and risks of HSAG as the complex, IP-rich principal entity, with a focus on its manufacturing, research and development, and IP ownership activities.

B. Scope of Work

The functional analysis is the foundational component of the engagement, as it provides the factual basis for method selection, tested party determination, and comparability analysis in the benchmarking studies and APA application. The scope of work for this work stream is as follows:

Interview Protocol Design. Robert Jansen will design a comprehensive interview questionnaire covering the functions performed, assets employed, and risks assumed by each entity across the US-Germany semiconductor supply chain, IP licensing relationship, and R&D cost sharing arrangement. The protocol will be structured to elicit detailed information regarding organizational structure, decision-making authority, key value drivers, personnel allocation, and operational processes for each entity.

Interview Scheduling and Conduct. Interviews will be scheduled and conducted with the following individuals, either in person or by secure videoconference as logistics require:

HSI Personnel:

• Victor Almeida, President & General Manager — executive overview of HSI's operations, strategic role within the Halcyon group, North American market positioning, and key customer relationships.

• Priya Raghavan, VP, Tax — tax and financial overview, intercompany transaction mechanics, pricing policies, and internal reporting.

• Thomas Kuroda, VP, Supply Chain Operations — supply chain operations, wafer and die procurement from HSAG, inventory management, logistics, quality assurance, and distribution to North American customers.

HSAG Personnel:

• Dr. Hendrik Möller, Chief Technology Officer — research and development activities, technology roadmap, process node development (7nm, 5nm, 3nm), IP portfolio management, cost sharing arrangement participation, and contributions to the CSA.

• Dr. Erwin Fassbinder, SVP, Group Tax — group tax structure, intercompany pricing policies, transfer pricing governance, and coordination between German and US tax positions.

Entity Characterizations. A central objective of the functional analysis is to establish the appropriate characterization of each entity for purposes of tested party selection and comparability analysis:

HSI — Least Complex Entity / Limited-Risk Distributor. The functional analysis will establish that HSI operates as the least complex entity in the intercompany supply chain, performing primarily distribution, marketing, limited design support (conducted at its Santa Clara design center located at 2455 Augustine Drive, Suite 300, Santa Clara, CA 95054), and customer service functions. HSI maintains regional sales offices in Southfield, Michigan, and Beaverton, Oregon. HSI's functions are limited relative to those of HSAG; HSI does not engage in semiconductor fabrication, does not own significant intangible property (other than routine marketing intangibles), and bears limited entrepreneurial risk. HSI's assets consist primarily of working capital, limited design center equipment, and routine distribution-related assets. HSI's principal risks include inventory risk, credit risk, and limited market risk associated with its distribution activities. HSI employs approximately 2,850 individuals.

HSAG — Complex, IP-Rich Principal Entity. The functional analysis will establish that HSAG is the complex, IP-rich principal entity owning and managing the core manufacturing and R&D functions of the Halcyon group. HSAG operates advanced-node fabrication facilities (7nm, 5nm, and 3nm process technologies) at its Dresden and Chemnitz sites, invests heavily in research and development (total R&D expenditures of €1,420,000,000 in FY 2024), and owns the proprietary semiconductor process technology, design libraries, and related intangible property that underlies the group's competitive position. HSAG employs approximately 14,600 individuals in Germany and approximately 22,400 globally.

Documentation of Functions, Assets, and Risks. The functional analysis memoranda will document in detail the specific functions, assets, and risks of each entity, organized by covered transaction category and cross-referenced to the relevant intercompany agreements.

C. Responsible Team Members

• Robert Jansen: Prepare the interview protocol; schedule, conduct, and document all functional analysis interviews; prepare initial drafts of the Functional Analysis Memorandum — HSI and the Functional Analysis Memorandum — HSAG.

• Leila Nazari: Review and finalize both functional analysis memoranda; coordinate with Meridian Economics to ensure integration of functional analysis findings into the benchmarking studies and economic analyses.

• Leonard Cross: Senior review of all final functional analysis memoranda.

D. Timeline

VI. Work Stream 2 — Economic Analysis and Benchmarking

A. Deliverables

The following deliverables will be produced under Work Stream 2:

1. Industry Analysis Memorandum — Global Semiconductor Industry — A comprehensive analysis of the global semiconductor industry, including competitive dynamics, market segmentation, cyclicality, capital intensity, R&D investment trends, and economic conditions relevant to the benchmarking period.

2. Benchmarking Study — Tangible Goods (CPM/TNMM Analysis) — A full benchmarking study identifying and screening comparable North American semiconductor distributors and computing arm's-length operating margin ranges for HSI's tangible goods distribution activities.

3. Benchmarking Study — Royalty (CUT Analysis) — A benchmarking study identifying and screening comparable uncontrolled license agreements for semiconductor intellectual property and computing arm's-length royalty rate ranges.

4. CSA Documentation Addendum — A documentation addendum covering HSI's anticipated benefit share analysis, summary of the PCT valuation methodology and results, and analysis of the arm's-length character of HSI's cost-sharing contributions.

5. Supplemental Economic Analysis — Sensitivity Testing — A supplemental analysis prepared for Phase 2 negotiation support purposes, testing the robustness of the benchmarking results under alternative assumptions and methodologies.

B. Scope of Work

All benchmarking and quantitative economic analyses will be performed by Meridian Economics GmbH, under the direction and review of C&H. Dr. Annika Breitner (Managing Director) and Maximilian Voss (Senior Analyst) are the designated Meridian personnel for this engagement. The scope of work for each deliverable is as follows:

Industry Analysis. The Industry Analysis Memorandum will provide a comprehensive overview of the global semiconductor industry, with particular emphasis on the automotive, industrial IoT, and data-center market segments in which the Halcyon group principally operates. The analysis will address competitive dynamics, including market concentration, barriers to entry, and technology differentiation; cyclicality and its impact on profitability across the benchmarking period (FY 2020–2024); capital intensity and the economics of advanced-node fabrication; R&D investment trends in the semiconductor sector; and macroeconomic conditions, including the impact of supply chain disruptions, trade policy developments, and foreign exchange movements during the relevant period. The industry analysis will serve as the economic backdrop for the comparability analysis and will be incorporated by reference into the contemporaneous documentation and APA application.

CPM/TNMM Benchmarking (Tangible Goods). The CPM/TNMM benchmarking study will identify and screen comparable North American semiconductor distributors to establish an arm's-length range for HSI's operating margin on net resales. The benchmarking process will follow established methodology under Treasury Regulation §1.482-5 and Chapter II of the OECD Transfer Pricing Guidelines:

• Identification of an initial universe of potential comparable companies through database searches (Fenmore Services Inc., Bureau van Dijk Orbis, and publicly available SEC filings).

• Application of quantitative and qualitative screening criteria, including SIC/NAICS codes, geographic focus (North America), functional comparability (distribution of semiconductor components), asset intensity, and financial data availability.

• Target of identifying approximately 15 to 20 companies that pass the initial screening; based on preliminary analysis, Meridian anticipates a final comparable set of 17 companies.

• Computation of the profit level indicator — operating margin on net resales — for the final comparable set over the five-year benchmarking period (FY 2020–2024), using five-year weighted averages.

• Determination of the interquartile range. Based on preliminary analysis, the expected IQR is 2.8% to 6.1%, with a median of 4.4%.

• HSI's FY 2024 operating margin of 4.80% falls within the expected IQR, supporting the arm's-length character of the intercompany pricing.

• Application of comparability adjustments as warranted, including working capital adjustments, accounting differences, and other adjustments necessary to improve the reliability of the comparison.

• HSI is selected as the tested party on the basis that it is the least complex entity in the controlled transaction. HSAG, as the IP-rich, complex principal entity, is not amenable to reliable comparability analysis.

CUT Benchmarking (Royalties). The CUT benchmarking study will identify and screen comparable uncontrolled license agreements for semiconductor intellectual property to establish an arm's-length range for the royalty rate charged under the HSAG-HSI IP License Agreement:

• Identification and screening of comparable uncontrolled license agreements using the Clearpoint Royalty Database (subscription held by Meridian) and publicly available SEC filings, including technology licensing agreements, patent cross-license agreements, and similar arrangements in the semiconductor industry.

• Target of identifying approximately 8 comparable license agreements that are sufficiently comparable in terms of the nature of the licensed technology, the scope and exclusivity of the license, the stage of development of the technology, and the economic terms.

• Computation of royalty rate ranges from the comparable agreements. Based on preliminary analysis, the expected IQR is 3.5% to 8.2%, with a median of 5.6%.

• HSAG's 6.0% royalty rate falls within the IQR, above the median, supporting its arm's-length character.

• Corroboration of the CUT analysis through a residual profit split analysis, allocating combined profits between HSAG and HSI based on their respective contributions to value creation, including routine returns and residual returns attributable to intangible property.

CSA Analysis. The CSA Documentation Addendum will document the arm's-length character of HSI's cost-sharing contributions under the Qualified Cost Sharing Arrangement:

• Summary of the PCT buy-in payment of $312,500,000, made on July 15, 2018, including a description of the income method parameters: 11.8% discount rate, 15-year projection period, and the historical valuation performed by Stonebridge Valuation Partners LLC (Marcus Reinhardt, Managing Director).

• Documentation of HSI's anticipated benefit share of 22.5%, reflecting its North American exploitation rights.

• Analysis of FY 2024 qualified R&D costs of €998,200,000 and HSI's corresponding cost-sharing contribution of €224,600,000.

• Evaluation of whether a periodic adjustment is required under Treasury Regulation §1.482-7, including a comparison of actual results to the projections underlying the original PCT valuation.

Sensitivity Testing (Phase 2). In support of APA negotiation strategy, Meridian will prepare supplemental economic analyses testing the sensitivity of the benchmarking results to alternative assumptions and methodologies:

• Testing of alternative profit level indicators, including the Berry ratio and gross margin, as alternative measures for the tangible goods transaction.

• Application of alternative screening criteria and their impact on the comparable set composition.

• Comparison of multi-year weighted average versus single-year testing approaches.

• Quantification of the impact of comparability adjustments on the interquartile range boundaries and median.

• These analyses will be used to inform C&H's negotiation positions and to anticipate and respond to potential IRS challenges to the proposed methodology.

C. Responsible Team Members

• Meridian Economics (Dr. Annika Breitner, Maximilian Voss): Prepare all benchmarking studies, the industry analysis, the CSA documentation addendum, and supplemental sensitivity testing analyses.

• Leila Nazari: Direct Meridian's work; provide substantive input and strategic guidance; review and approve all economic deliverables prior to finalization; collaborate with Robert Jansen on the Industry Analysis Memorandum.

• Robert Jansen: Assist with financial data compilation; coordinate with Gresham Whitfield LLP (Janet Okonkwo, Houston) for audited financial statements for FY 2020–2024; provide financial data inputs to Meridian.

• Leonard Cross: Senior review of all economic analyses and benchmarking studies.

D. Timeline

VII. Work Stream 3 — Contemporaneous Transfer Pricing Documentation

A. Deliverables

The following deliverables will be produced under Work Stream 3:

1. Master File (OECD BEPS Action 13) — FY 2024 — Group-level transfer pricing documentation for the Halcyon group.

2. US Local File — HSI (FY 2024) — Entity-level contemporaneous transfer pricing documentation for HSI for the most recent fiscal year.

3. US Local File — HSI (FY 2023) — Rollback documentation for the first rollback year.

4. US Local File — HSI (FY 2022) — Rollback documentation for the earliest covered rollback year.

5. IRC §6662(e) Penalty Protection Statement — Statement asserting reasonable cause and good faith, to be attached to each Local File.

B. Scope of Work

Master File. The Master File will be prepared in compliance with the OECD BEPS Action 13 standards and German GAufzV requirements. It will provide group-level transfer pricing documentation covering the Halcyon group's organizational structure, including the four principal entities: HSAG (Germany, parent), HSI (United States), Halcyon Semiconductor Japan K.K. ("HSJ") (Japan), and Halcyon Semiconductor (Shanghai) Co., Ltd. ("HSC") (China). The Master File will contain a description of the group's businesses and key value drivers; an overview of the group's intangible property portfolio, including ownership, development, and exploitation of technology intangibles; a description of intercompany financial activities and financing arrangements; and a presentation of the group's consolidated financial and tax positions. Aggregate intercompany flows of approximately €1.28 billion will be referenced and contextualized within the group's global operations. The Master File will be coordinated with KP (Dr. Tobias Kettner and Friederike Lang) to ensure compliance with German documentation requirements under §1 AStG and §§90(3), 162(3)–(4) of the Abgabenordnung ("AO"). C&H and KP will jointly review the Master File content to ensure consistency between the US and German versions.

US Local Files (FY 2024, FY 2023, FY 2022). Entity-level contemporaneous transfer pricing documentation will be prepared for HSI for each of the three fiscal years. Each Local File will incorporate:

• The functional analysis from Work Stream 1, describing HSI's functions, assets, and risks.

• The economic analysis and benchmarking results from Work Stream 2, including the CPM/TNMM benchmarking study, CUT benchmarking study, and CSA documentation addendum.

• Method selection analysis demonstrating that the chosen methods — CPM/TNMM for tangible goods, CUT for royalties, and the income method for cost-sharing contributions per Treasury Regulation §1.482-7 — represent the best method under Treasury Regulation §1.482-1(c).

• Arm's-length results for each covered transaction, demonstrating that the intercompany pricing falls within the applicable IQR.

• Financial data schedules, including reconciliation to audited financial statements.

The FY 2024 Local File will incorporate the following key financial data for HSI:

• Revenue: $4,120,000,000

• Cost of Goods Sold (COGS): $3,380,000,000

• Gross Profit: $740,000,000 (17.96% gross margin)

• Operating Expenses: $542,200,000

• Operating Income: $197,800,000 (4.80% operating margin)

• Intercompany Purchases (from HSAG): $1,076,000,000

• Royalty Payments (to HSAG): $70,500,000

• Cost-Sharing Contributions (to HSAG): $231,300,000

The FY 2023 and FY 2022 Local Files will utilize the corresponding year financial data and benchmarking results. Where benchmarking results for the rollback years differ from FY 2024 results, such differences will be documented and explained.

Penalty Protection Statement. A statement under IRC §§6662(e) and 6662(h) and Treasury Regulation §1.6662-6 will be prepared, asserting reasonable cause and good faith for the transfer pricing methods and results reflected in the Local Files. This statement will describe the contemporaneous documentation process, the qualifications and independence of the economic consultants, the diligence applied in the preparation of the analyses, and the taxpayer's compliance with applicable documentation requirements. The Penalty Protection Statement will be attached to each Local File.

Applicable Legal Framework. The contemporaneous documentation will be prepared in accordance with IRC §482 and the implementing Treasury Regulations at §§1.482-1 through 1.482-9 (transfer pricing methods and standards) and §1.6662-6 (documentation and penalty protection requirements). Reference will also be made to the OECD Transfer Pricing Guidelines for Multinational Enterprises and Tax Administrations (2022 edition), as applicable.

C. Responsible Team Members

• Leila Nazari: Primary drafter of all US Local Files, the Master File, and the Penalty Protection Statement.

• Robert Jansen: Prepare financial data schedules; reconcile financial data to audited financial statements in coordination with Gresham Whitfield LLP (Janet Okonkwo); assist with drafting of Local Files and Master File.

• Sylvia Hartwell: Review for fee cap and billing purposes; secondary review of all contemporaneous documentation deliverables.

• Leonard Cross: Senior review and final sign-off on all contemporaneous documentation.

• KP (Dr. Tobias Kettner, Friederike Lang): Coordinate on Master File content for German compliance; review and comment on Master File from a German tax perspective.

D. Timeline

September 30, 2025 is a hard deadline. All FY 2024 contemporaneous transfer pricing documentation — including the Master File and the FY 2024 US Local File — must be completed by this date. Any slippage in upstream work streams (functional analysis, benchmarking) will compress the documentation drafting window and must be addressed through the risk mitigation measures described in Section XIV below.

VIII. Work Stream 4 — APA Application

A. Deliverables

The following deliverables will be produced under Work Stream 4:

1. Pre-Filing Memorandum to IRS APMA — Anonymous submission requesting a pre-filing conference.

2. Pre-Filing Conference Preparation Memorandum — Internal, privileged strategy memorandum in advance of the pre-filing conference.

3. Pre-Filing Conference Summary Memorandum — Internal memorandum documenting IRS APMA feedback and action items from the conference.

4. Formal APA Application — IRS Form 14661 and Supporting Narrative — The formal bilateral APA application submitted to IRS APMA.

5. APA Application — Economic Analysis Appendix — Summary and incorporation of Meridian's benchmarking results and CSA analysis.

6. APA Application — Legal Analysis Memorandum — Comprehensive legal analysis supporting the proposed transfer pricing methods and APA terms.

7. APA Application — Financial Data Appendix (Excel workbook) — Detailed financial data schedules supporting the application.

8. Cover Letter — APA Application Submission to IRS APMA — Transmittal letter enclosing the complete application package.

9. Coordination Letter to Kettner Pflüger (German Application) — Transmittal of the US application package to German counsel for coordination of the parallel German submission.

10. Power of Attorney — IRS Form 2848 — Authorization for C&H attorneys to represent HSI before the IRS.

B. Scope of Work

Pre-Filing Memorandum. An anonymous submission will be prepared and submitted to IRS APMA requesting a pre-filing conference in connection with a proposed bilateral APA. The Pre-Filing Memorandum will describe the taxpayer's industry (semiconductors), the nature and categories of covered transactions (tangible goods sales, royalty payments, and cost-sharing contributions), the proposed transfer pricing methods (CPM/TNMM, CUT, and income method), the proposed APA term (five prospective years, January 1, 2025 through December 31, 2029), and the rollback request (three prior years, January 1, 2022 through December 31, 2024). Consistent with IRS APMA pre-filing conference protocol, the memorandum will not identify HSAG or HSI by name. The target submission date is April 14, 2025.

Pre-Filing Conference Preparation. A privileged internal strategy memorandum will be prepared for the pre-filing conference, which is scheduled for May 19, 2025. This memorandum will address anticipated IRS APMA questions regarding the proposed methods, comparability analysis, and rollback justification; prepare talking points for Leonard Cross and Leila Nazari, who will attend the conference; outline the anonymous conference protocol; and identify strategic considerations for the conference, including the extent of information to share at the pre-filing stage.

Pre-Filing Conference Summary. Following the pre-filing conference, a summary memorandum will be prepared documenting IRS APMA's feedback, any concerns raised regarding the proposed methods or APA terms, and action items to be addressed in the formal application. This memorandum will be circulated internally to the C&H engagement team and will inform the drafting of the formal APA application.

Formal APA Application (Form 14661). The formal bilateral APA application will be prepared on IRS Form 14661 with a comprehensive supporting narrative and appendices. The application will include:

• Identification of HSAG (Steuernummer 203/118/04527, VAT ID DE 814 723 956) and HSI (EIN 84-2917630, Delaware File Number 7341825) as co-applicants for the bilateral APA.

• Description of the three categories of covered transactions: wafer/die sales (FY 2024: €987,600,000), royalty payments (FY 2024: €68,400,000), and cost-sharing contributions (FY 2024: €224,600,000).

• Proposed transfer pricing methods: CPM/TNMM for tangible goods (IQR 2.8%–6.1%, median 4.4%), CUT for royalties (IQR 3.5%–8.2%, median 5.6%, contractual rate 6.0%), and income method for cost-sharing contributions (22.5% anticipated benefit share).

• Proposed APA term: January 1, 2025 through December 31, 2029 (five prospective tax years).

• Rollback request: January 1, 2022 through December 31, 2024 (three prior tax years).

• User fee of $113,500 (large case rate, as of 2025).

• References to Revenue Procedure 2015-41 and the US-Germany Income Tax Treaty.

Economic Analysis Appendix. The Economic Analysis Appendix will incorporate and summarize Meridian's benchmarking results and CSA analysis, including the CPM/TNMM comparable company search methodology and results, the CUT comparable agreement search methodology and results, the CSA benefit share analysis, and the industry analysis. This appendix will be drawn from the deliverables produced under Work Stream 2 and presented in a format suitable for IRS APMA review.

Legal Analysis Memorandum. The Legal Analysis Memorandum will provide the legal basis for the proposed transfer pricing methods and APA terms, including:

• IRC §482 and Treasury Regulations §§1.482-1 through 1.482-9, including the best method rule under §1.482-1(c), the comparability standards under §1.482-1(d), and the specific method regulations for comparable profits (§1.482-5), comparable uncontrolled transactions (§1.482-4(c)), and cost sharing arrangements (§1.482-7).

• The OECD Transfer Pricing Guidelines for Multinational Enterprises and Tax Administrations (2022 edition), including Chapter II (transfer pricing methods), Chapter VI (intangibles), and Chapter VIII (cost contribution arrangements).

• Articles 9 (Associated Enterprises) and 25 (Mutual Agreement Procedure) of the US-Germany Income Tax Treaty.

• Revenue Procedure 2015-41 (APA program procedures and requirements).

• Analysis of the best method rule as applied to each covered transaction category.

• Discussion of competent authority procedures under the Treaty.

Financial Data Appendix. An Excel workbook will be prepared containing segmented financial data for HSI and HSAG, intercompany transaction schedules, and reconciliation to audited financial statements for FY 2020 through FY 2024. Key financial figures to be included are:

• HSI FY 2024: Revenue $4,120,000,000; COGS $3,380,000,000; Operating Income $197,800,000 (4.80% operating margin).

• HSAG FY 2024: Revenue €8,740,000,000; EBITDA €2,620,000,000; EBIT €1,570,000,000.

• Intercompany transaction schedules for each covered transaction category for FY 2020–2024.