Contract analysis

I. INTRODUCTION AND SUMMARY This Exhibit E is submitted in support of the Formal Protest of Penterra Pharmaceuticals Corp. ("PPC" or "the Taxpayer") and establishes that no accuracy-related penalty should be imposed under Internal Revenue Code ("IRC") § 6662(e) with respect to the proposed IRC § 482 transfer pricing adjustments totaling $380,400,000 across Tax Years ("TY") 2017, 2018, 2019, and 2020. PPC submits this

II. APPLICABLE LEGAL FRAMEWORK A. IRC § 6662(e) — Substantial Valuation Misstatement Penalty

Section 6662(a) of the Internal Revenue Code imposes a penalty equal to 20% of the portion of any underpayment of tax that is attributable to one or more of the categories of conduct specified in section 6662(b). Among the specified categories, section 6662(b)(3) identifies "any substantial valuation misstatement under chapter 1." Section 6662(e) defines a "substantial valuation misstatement" in the specific context

Section 6662(e)(3)(B) provides a safe harbor from the substantial valuation misstatement penalty for taxpayers who maintain contemporaneous documentation. Specifically, the statute provides that the net section 482 transfer price adjustment shall be reduced by the portion of the adjustment "with respect to which the taxpayer establishes that the requirements of [the contemporaneous documentation rules] are met." Trea

III. PPC'S CONTEMPORANEOUS TRANSFER PRICING DOCUMENTATION (TY 2017–2020) A. Documentation Preparer and Process PPC's contemporaneous transfer pricing documentation for each of TY 2017, 2018, 2019, and 2020 was prepared by Crestfield & Associates LLP ("Crestfield"), located at 1200 Avenue of the Americas, New York, NY 10036. Crestfield is a nationally recognized accounting and advisory firm that served as PPC's indepe

IV. PPC'S REASONABLE CAUSE AND GOOD FAITH A. Retention of Qualified Professionals PPC retained and relied upon multiple highly qualified professional advisors in connection with the establishment, maintenance, and reporting of its transfer pricing positions for TY 2017 through 2020. The qualifications, roles, and contributions of each advisor are described below.

1. Crestfield & Associates LLP — Original Transfer Pricing Documentation. Crestfield & Associates LLP is a nationally recognized accounting and advisory firm with an established and deep expertise in transfer pricing analysis, documentation, and compliance. Crestfield has served as PPC's independent auditor since 2010 and has been responsible for the preparation of PPC's consolidated federal income tax returns (Forms

2. Calderwood & Harkness LLP — Outside Tax Counsel. Calderwood & Harkness LLP ("C&H") was retained by PPC on June 2, 2022, to provide legal counsel and representation in connection with the IRS examination of PPC's transfer pricing positions for TY 2017 through 2020. C&H is an AmLaw 100 law firm with a nationally recognized tax controversy and transfer pricing practice. The C&H engagement has been led by the followin

3. Whitmore Valuation Group LLC — Independent Economics Firm. Whitmore Valuation Group LLC ("WVG") was retained under a Kovel arrangement at the direction of Calderwood & Harkness LLP to provide independent economic analyses in connection with the IRS examination and protest proceedings. The Kovel engagement letter was executed on June 20, 2022 (Reference No. 1018-00009-KV), establishing WVG's retention as an agent o

4. Thornbury & Keogh — Irish Tax Advisors. Thornbury & Keogh ("T&K"), located at 22 Fitzwilliam Square, Dublin 2, D02 YH68, Ireland, served as the Irish tax advisors to PBI and PMI throughout the period at issue. The T&K engagement was led by Ciarán Thornbury, Lead Partner, who has extensive experience in Irish corporate taxation, including the taxation of multinational pharmaceutical operations in Ireland. T&K provi

V. SPECIFIC RESPONSES TO IRS PENALTY ASSERTIONS A. The Proposed Adjustment Does Not Demonstrate Lack of Reasonable Cause PPC acknowledges that the IRS has proposed substantial IRC § 482 adjustments for TY 2017 through 2020. However, the existence of a proposed adjustment — even a large one — does not, standing alone, establish that PPC lacked reasonable cause for the positions reported on its returns. This principle