Contract analysis

1. INTRODUCTORY RECITALS WHEREAS, Calderwood & Harkness LLP ("C&H" or the "Firm") and Jonathan Robert Caldwell (the "Client") entered into an engagement letter dated February 15, 2023 (the "Base Engagement Letter"), pursuant to which C&H was retained to provide comprehensive generational estate planning services to the Client, including the design, structuring, documentation, and implementation of an integrated estat

2. SCOPE OF TAX ADVISORY SERVICES 2.1 Overview. Sylvia Hartwell, Partner, Tax Practice Group, Calderwood & Harkness LLP, and the C&H tax advisory team will provide the Tax Advisory Services described in this Section 2 in connection with the Caldwell generational estate plan (the "Estate Plan"). The Estate Plan encompasses the following structures, each as identified and described in the Base Engagement Letter: (a) th

3. TAX ADVISORY TEAM The following individuals at Calderwood & Harkness LLP will comprise the Tax Advisory Services team for this engagement: Sylvia Hartwell — Partner, Tax Practice Group, Calderwood & Harkness LLP. Ms. Hartwell will serve as the lead tax advisor for all services described in this Addendum. She will have primary responsibility for GRAT annuity calculations, § 7520 rate analysis, GST exemption allocat

4. COORDINATION WITH THIRD PARTIES 4.1 Strathmore Corporation & Greaves LLP C&H's tax advisory team will coordinate with Martin J. Prescott, CPA, Senior Partner, Private Client Group, at Strathmore Corporation & Greaves LLP, 600 Third Avenue, 28th Floor, New York, NY 10016, on the following matters: (a) Gift tax return (Form 709) preparation, review, and filing for the 2023 tax year, including the transmittal of draf

5. DELIVERABLES C&H's tax advisory team will produce the following specific deliverables under this Addendum. Each deliverable will be prepared under Sylvia Hartwell's supervision and reviewed by Victoria Chambers prior to delivery to the Client:

1. Estate Planning Strategy Memorandum (Tax Components) — A comprehensive memorandum setting forth the tax advisory team's analysis, conclusions, and recommendations with respect to the tax components of the Caldwell Estate Plan.

2. Federal Estate and Gift Tax Analysis (Quantitative Workbook) — A detailed quantitative workbook presenting the Client's federal estate and gift tax analysis, including current exposure, projected exposure under the Estate Plan, and sensitivity analyses.

3. GRAT Structuring Memorandum — A technical memorandum addressing the annuity calculations for GRATs A, B, and C, § 7520 rate analysis, asset selection recommendations, zeroed-out GRAT compliance, mortality risk, and grantor trust status.

4. GRAT Sensitivity Analysis — Return Scenarios (Modeling Workbook) — A modeling workbook presenting the projected wealth transfer under each GRAT across the 4%, 6%, 8%, and 10% annual return assumptions.

5. Valuation discount Analysis Memorandum — A memorandum analyzing the supportable valuation discounts for Stonecrest membership interests, Caldwell Ridgeline LP interests, and carried interest, with reference to Tax Court precedent and IRS guidance.

6. Generation-Skipping Transfer Tax Allocation Memorandum — A memorandum setting forth the recommended GST exemption allocation strategy, ETIP analysis, and reverse QTIP election considerations.

7. Private Foundation Compliance Memorandum (§§ 4940–4946) — A memorandum addressing the excise tax and compliance requirements for The Caldwell Family Foundation under IRC §§ 4940–4946.

8. ILIT Structure and Crummey Notice Memorandum (Tax Aspects) — A memorandum analyzing the tax treatment of the Caldwell Family Insurance Trust, including estate tax exclusion, the three-year lookback rule, Crummey withdrawal rights, and lapse of powers.

9. Marital Trust / Credit Shelter Trust Design Memorandum (Tax Aspects) — A memorandum analyzing the tax design of the credit shelter trust and marital QTIP trust provisions under the Caldwell Revocable Trust, including portability election considerations and post-2025 sunset analysis.

10. State Income Tax Planning Memorandum (Delaware Situs) — A memorandum addressing the state income tax implications of the Dynasty Trust's Delaware situs, New York source income considerations, and DING trust alternatives.

11. Annuity Payment Schedules for GRATs A, B, and C — Detailed schedules specifying the annuity payment amounts, due dates, and payment methods for each GRAT.

12. Draft Form 709 and Supporting Schedules/Valuation Summaries — A complete draft of the 2023 federal gift tax return (Form 709) with all required schedules, appraisal summaries, § 7520 computation worksheets, and GST exemption allocation elections.

13. Review Memorandum of Ashford Appraisal Reports — An internal memorandum evaluating the Ashford Valuation Group appraisal reports for reasonableness, IRS defensibility, and consistency with applicable valuation standards and Tax Court precedent.

14. Letter to Ashford Valuation Group with Appraisal Engagement Instructions — A formal letter to Ashford Valuation Group LLC setting forth the engagement instructions, scope of appraisals, valuation standards, and valuation dates.

15. Letter to Strathmore Corporation & Greaves LLP for Gift Tax Return Coordination — A formal letter to Strathmore Corporation & Greaves LLP transmitting the draft Form 709, supporting schedules, and all related documentation for review, finalization, and filing.

6. FEES AND BILLING The fees for the Tax Advisory Services described in this Addendum are included within the overall engagement fee estimate of $1,850,000 and the fee cap of $2,100,000 as set forth in Section 7 of the Base Engagement Letter. No additional fees or fee adjustments are required as a result of this Addendum. The tax advisory workstream described herein is estimated to comprise approximately 35% to 40% o

7. TIMELINE The Tax Advisory Services described in this Addendum will be performed in accordance with the overall engagement timeline established in the Base Engagement Letter. The following milestones are specifically relevant to the tax advisory workstream: The foregoing timeline is subject to adjustment based on circumstances outside the Firm's control, including delays in receipt of appraisal reports, IRS process

8. LIMITATIONS AND QUALIFICATIONS The Tax Advisory Services described in this Addendum are subject to the following limitations and qualifications: 8.1 Current Law. The tax advisory services are based on current federal and New York State tax law, regulations, rulings, and judicial authority as of the date of this Addendum. Tax law is complex and subject to differing interpretations, and the Firm's analysis and recom

9. CONFIDENTIALITY AND PRIVILEGE 9.1 Reaffirmation. The confidentiality and attorney-client privilege protections set forth in Section 10 of the Base Engagement Letter are hereby reaffirmed and shall apply in full to all communications, memoranda, analyses, work product, and documents prepared or exchanged in connection with the Tax Advisory Services described in this Addendum. 9.2 Tax-Related Privilege Consideration

10. GENERAL PROVISIONS 10.1 Incorporation by Reference. All terms and conditions of the Base Engagement Letter not expressly modified or superseded by this Addendum are hereby incorporated by reference and shall continue in full force and effect. This Addendum is supplemental to, and not a replacement of, the Base Engagement Letter. 10.2 Governing Law. This Addendum shall be governed by and construed in accordance wi

11. EXECUTION By signing below, the Client confirms that he has read and understands the scope of Tax Advisory Services described in this Addendum, and agrees to the terms and conditions set forth herein. The Client acknowledges that this Addendum supplements the Base Engagement Letter dated February 15, 2023, and that all rights, obligations, and responsibilities established under the Base Engagement Letter remain i