FR EA
1022-00004 · Northgate Telecommunications PLC · Engagement & Conflicts
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CALDERWOOD & HARKNESS LLP

Attorneys at Law

[FIRM LOGO]

NEW MATTER INTAKE FORM

Form Version 7.2 (Revised January 2024) Office of the General Counsel — New Business Intake

Date of Completion: June 4, 2024 Completed by: James Underwood, Associate Matter Number: 1022-00004

This New Matter Intake Form is an internal administrative document of Calderwood & Harkness LLP and is subject to attorney-client privilege, the work product doctrine, and the firm's internal confidentiality policies. This form should not be disclosed to any person outside the firm without the prior written approval of the Responsible Partner or the Office of the General Counsel. All information contained herein should be treated as strictly confidential.

SECTION 1: MATTER IDENTIFICATION

Matter Number: 1022-00004

Date Opened: June 4, 2024

Matter Name / Short Description: Northgate Telecommunications PLC — CEO Employment Agreement Negotiation (Marcus Elliot Harding)

Matter Type / Practice Area: Executive Employment Agreement — Labor & Employment

Sub-Practice Area: C-Suite Employment Negotiations

Primary Office: New York (299 Park Avenue, 42nd Floor, New York, NY 10171)

Secondary Office (if applicable): London (20 Fenchurch Street, 15th Floor, London EC3M 3BY) — coordination role only. The London office may be consulted informally on cross-border structural matters, but substantive UK employment law advice will be provided by external UK counsel (Moorfield Bates LLP) under a separate engagement with the client. No London-based timekeepers are currently assigned to this matter.

SECTION 2: CLIENT INFORMATION

Client Full Legal Name: Northgate Telecommunications PLC

Short Name(s) / Aliases: Northgate; NTP

Client Number: C-009472 (pre-existing client record in the firm's client management system)

Entity Type: Public limited company

Jurisdiction of Organization: England and Wales

Registered Number: 07381264 (Companies House, England and Wales)

Registered Address: 45 Canary Wharf Tower, One Canada Square, London E14 5AB, United Kingdom

US Address (for this engagement): 600 Lexington Avenue, 38th Floor, New York, NY 10022

Industry / Sector: Telecommunications; Software / SaaS

Public Company: Yes

Stock Listings: London Stock Exchange (LON: NTP); NYSE American Depositary Receipt (NYSE: NTPC)

Market Capitalization (approximate): £8.7 billion / $11.1 billion (as of June 2024, based on closing prices as of May 31, 2024)

Annual Revenue (FY2023): £4.26 billion ($5.43 billion, converted at the average 2023 GBP/USD exchange rate)

Number of Employees: Approximately 22,500 globally, with principal operations in the United Kingdom, the United States, Germany, Singapore, and Australia. The US subsidiary, Northgate Telecommunications US, Inc., employs approximately 6,200 individuals across offices in New York, Chicago, Dallas, and San Jose.

New Client? No — Northgate Telecommunications PLC is an existing client of the firm. Calderwood & Harkness has represented Northgate on various US corporate, employment, and regulatory matters since 2018. The client's relationship partner history and prior engagement records are maintained in the firm's client management system under Client Number C-009472.

Engagement Letter Executed? Yes — the engagement letter for this matter was executed on June 4, 2024. The engagement letter was signed by Elaine Whitford, Senior Vice President & Group General Counsel, on behalf of Northgate Telecommunications PLC, and by Renata Vasquez, Partner, on behalf of Calderwood & Harkness LLP.

Conflicts Check Completed? Yes — the conflicts check was initiated on June 1, 2024 and completed on June 3, 2024. All identified parties were cleared. The conflicts clearance was approved by Renata Vasquez (Responsible Partner) and Bernard Crawford (Billing Partner). A detailed conflicts clearance memorandum dated June 3, 2024 is on file with the Office of the General Counsel. See Section 6 below for additional detail regarding the parties searched and the results of the conflicts analysis.

SECTION 3: CLIENT CONTACTS

Primary Client Contact

Name: Elaine Whitford

Title: Senior Vice President & Group General Counsel

Company: Northgate Telecommunications PLC

Address: 600 Lexington Avenue, 38th Floor, New York, NY 10022

Telephone: +1 (212) 555-0147

Email: e.whitford@northgatetelecom.com

Role in Engagement: Elaine Whitford is the in-house legal lead for this engagement. Ms. Whitford is authorized to give instructions to the engagement team, receive privileged legal advice, approve budgets, review and approve draft documents, and authorize positions to be taken in negotiations on behalf of the client. Ms. Whitford reports to the Remuneration Committee and the Board of Directors with respect to CEO appointment matters and will serve as the primary conduit between the engagement team and the Board. All privileged communications should be directed to Ms. Whitford unless otherwise agreed.

Additional Client Contacts

Name: Priya Narayanan

Title: Chief People Officer

Company: Northgate Telecommunications PLC

Address: 600 Lexington Avenue, 38th Floor, New York, NY 10022

Telephone: +1 (212) 555-0193

Email: p.narayanan@northgatetelecom.com

Role in Engagement: Ms. Narayanan is the HR lead for this engagement and may provide instructions on compensation benchmarking matters, benefits design, and perquisites. Ms. Narayanan coordinates directly with Whitmore Hobson LLP (the client's independent compensation consultant) and will supply compensation data, peer-group analyses, and internal pay-ratio information. Ms. Narayanan is authorized to participate in calls with the engagement team regarding compensation structure and quantum, but final authority for instructions rests with Ms. Whitford and the Remuneration Committee.

Name: Geoffrey Stanton

Title: Lead Independent Director; Chair, Remuneration Committee

Company: Northgate Telecommunications PLC (Board of Directors)

Address: c/o Northgate Telecommunications PLC, 45 Canary Wharf Tower, One Canada Square, London E14 5AB, United Kingdom

Telephone: +44 (0)20 7555 8842

Email: g.stanton@northgatetelecom.com

Role in Engagement: Mr. Stanton is the Board-level principal for this engagement in his capacity as Chair of the Remuneration Committee. Mr. Stanton may participate in strategy discussions regarding compensation structure, severance provisions, and change-in-control terms. He is authorized to approve and instruct positions on behalf of the Remuneration Committee. Given the sensitivity of CEO compensation negotiations and the UK corporate governance requirements applicable to NTP, Mr. Stanton's involvement ensures that the Remuneration Committee has direct access to legal counsel throughout the negotiation process.

Name: Dame Philippa Thornton-Hale, DBE

Title: Chair of the Board

Company: Northgate Telecommunications PLC (Board of Directors)

Address: c/o Northgate Telecommunications PLC, 45 Canary Wharf Tower, One Canada Square, London E14 5AB, United Kingdom

Telephone: +44 (0)20 7555 8801

Email: p.thornton-hale@northgatetelecom.com

Role in Engagement: Dame Philippa served as the principal Board representative who extended the informal verbal offer to Marcus Elliot Harding on May 30, 2024, following the Board's unanimous selection of Mr. Harding as the preferred CEO candidate on May 28, 2024. Dame Philippa may participate in high-level strategy discussions regarding the overall structure of the offer and may need to be consulted on certain key commercial terms, particularly where they relate to the informal representations made during the verbal offer. Her involvement in day-to-day matters is expected to be limited, with primary Board-level engagement occurring through Mr. Stanton and the Remuneration Committee.

SECTION 4: ENGAGEMENT TEAM / STAFFING

Responsible Partner

Name: Renata Vasquez

Title: Partner, Labor & Employment

Office: New York (299 Park Avenue, 42nd Floor, New York, NY 10171)

Bar Admissions: New York; Connecticut; District of Columbia

Hourly Rate: $1,650 per hour

Role: Ms. Vasquez will serve as the Responsible Partner for this engagement. She will provide strategic oversight, lead key client communications with the Remuneration Committee and Board, participate in principal negotiations with counterparty counsel, and review and approve all material work product before delivery to the client.

Billing Partner

Name: Bernard Crawford

Title: Partner, Labor & Employment

Office: New York (299 Park Avenue, 42nd Floor, New York, NY 10171)

Bar Admissions: New York; New Jersey

Hourly Rate: $1,575 per hour

Role: Mr. Crawford will serve as the Billing Partner for this engagement. He will be responsible for billing administration, review of invoices prior to submission, and compliance with the client's outside counsel billing guidelines. Mr. Crawford will also provide substantive support on Section 280G analysis, Section 409A compliance, and change-in-control severance structuring, drawing on his extensive experience with executive employment matters involving publicly traded companies.

Lead Associate

Name: James Underwood

Title: Associate, Labor & Employment

Office: New York (299 Park Avenue, 42nd Floor, New York, NY 10171)

Bar Admissions: New York

Hourly Rate: $895 per hour

Role: Mr. Underwood will serve as the Lead Associate for this engagement. He will be responsible for day-to-day matter management, drafting of the principal employment agreement and related documents, preparation of term sheets and negotiation correspondence, coordination with external advisors (Moorfield Bates LLP, Whitmore Hobson LLP, Galloway & Partners, and Veltrano Proxy Advisors, Inc.), and direct communication with in-house counsel. Mr. Underwood will also prepare the initial Section 280G analysis and restrictive covenant enforceability memorandum.

Working Associate

Name: Devon Archer

Title: Associate, Labor & Employment

Office: New York (299 Park Avenue, 42nd Floor, New York, NY 10171)

Bar Admissions: New York

Hourly Rate: $725 per hour

Role: Ms. Archer will provide associate-level support, including research on New York restrictive covenant law, preparation of comparative analyses of peer-company CEO employment agreements (in coordination with Whitmore Hobson LLP data), Section 409A compliance review, and drafting of ancillary documents and schedules.

Additional Staffing Notes

No paralegals or other timekeepers are currently assigned to this matter. Should the need arise for paralegal support (e.g., document management, execution logistics, or due diligence on the candidate's existing compensation arrangements), the engagement team will coordinate with the firm's paralegal staffing coordinator to assign appropriate resources and will notify the client in accordance with the engagement letter's provisions regarding staffing changes.

The firm's London office (20 Fenchurch Street, 15th Floor, London EC3M 3BY) may be consulted informally on cross-border structural questions, but substantive UK employment law advice will be provided by Moorfield Bates LLP (1 Moorgate, London EC2R 6AB), which serves as the client's UK employment law counsel. The lead partner at Moorfield Bates for this engagement is Simon Aldridge, supported by associate Hannah Carmichael. Moorfield Bates has been engaged by Northgate Telecommunications PLC under a separate engagement letter and will handle all UK-specific employment law matters, including the drafting and negotiation of the UK service agreement, compliance with the FCA's Senior Managers & Certification Regime (SM&CR), and advice on UK Corporate Governance Code remuneration provisions. Coordination between Calderwood & Harkness and Moorfield Bates will occur through Mr. Underwood and Ms. Carmichael, with partner-level engagement as needed.

SECTION 5: MATTER DESCRIPTION AND SCOPE

Detailed Description of Matter

Calderwood & Harkness LLP has been retained by Northgate Telecommunications PLC ("Northgate" or the "Company") to negotiate and draft an executive employment agreement for the Company's incoming Chief Executive Officer, Marcus Elliot Harding.

Mr. Harding currently serves as President & Chief Operating Officer of Marlowe Asset Management Digital Holdings, Inc. (NYSE: VDHI), a Delaware corporation headquartered at 200 Technology Way, Suite 4000, San Jose, CA 95110. Mr. Harding has served in that role since 2019 and previously held the position of Executive Vice President, Global Operations at Marlowe Asset Management from 2016 to 2019. Mr. Harding's total direct compensation for fiscal year 2023 (as disclosed in Marlowe Asset Management's 2024 proxy statement) was approximately $14.2 million, comprising base salary, annual cash incentive, long-term equity awards, and other compensation elements. Mr. Harding currently holds unvested equity awards at Marlowe Asset Management with an estimated aggregate value of approximately $23,400,000 (based on Marlowe Asset Management's closing stock price as of May 31, 2024), which he would forfeit upon resignation from Marlowe Asset Management.

The engagement was authorized following the Northgate Board of Directors' unanimous selection of Mr. Harding as the preferred CEO candidate on May 28, 2024. The selection followed an extensive executive search process conducted by Kensington Partners Ltd. (a leading international executive search firm retained by Northgate on March 1, 2024), which presented a final shortlist of three candidates to the Board on May 22, 2024. An informal verbal offer was extended to Mr. Harding by Dame Philippa Thornton-Hale, Chair of the Board, on May 30, 2024. Mr. Harding expressed strong interest and indicated a willingness to engage in formal negotiations, subject to satisfactory resolution of compensation terms and transition logistics.

The CEO succession process was initiated following the public announcement by Sir Alistair Kemble, the outgoing CEO, of his retirement effective December 31, 2024, made on May 15, 2024. Sir Alistair has served as CEO of Northgate since 2015 and has agreed to cooperate fully with the transition process. The Board's objective is to complete the employment agreement negotiation and secure Mr. Harding's commencement as CEO by October 1, 2024, to permit a three-month transition and handover period before Sir Alistair's departure.

Mr. Harding is represented in this negotiation by personal counsel: Victoria Hargrove, Partner, Hargrove & Liddell LLP (51 Madison Avenue, 30th Floor, New York, NY 10010), supported by associate Nathan Chu. All negotiation communications on behalf of the candidate will be conducted through Hargrove & Liddell.

Scope of Work

The scope of Calderwood & Harkness's engagement encompasses the following:

1. Primary Executive Employment Agreement. Drafting and negotiation of a comprehensive executive employment agreement between Northgate Telecommunications US, Inc. (a Delaware corporation and wholly-owned US subsidiary of Northgate Telecommunications PLC) and Marcus Elliot Harding, to be governed by the laws of the State of New York. The US employment agreement will serve as the primary employment contract, reflecting the expectation that Mr. Harding will be based principally in New York and that approximately 80% of his working time will be devoted to US operations. The agreement is expected to address, at a minimum, the following substantive areas:

(a) Title, duties, and reporting structure (reporting directly to the Board of Directors);

(b) Term of employment (expected initial term of five years with automatic renewal provisions);

(c) Base salary (initial annual amount to be determined following compensation benchmarking);

(d) Annual incentive compensation (target bonus as a percentage of base salary, performance metrics, and payment timing);

(e) Long-term incentive equity awards, including restricted stock units ("RSUs") and performance stock units ("PSUs") granted under the Northgate Telecommunications PLC 2022 Omnibus Incentive Plan;

(f) Sign-on and make-whole payments designed to compensate Mr. Harding for the forfeiture of unvested equity and other compensation at Marlowe Asset Management Digital Holdings (estimated forfeiture value: $23,400,000);

(g) Perquisites, including executive automobile allowance, financial and tax planning services, supplemental life insurance, and executive health screening;

(h) Retirement and pension benefits, including participation in the Northgate Telecommunications US, Inc. 401(k) plan and any supplemental executive retirement arrangement;

(i) Severance and termination provisions, including payments and benefits upon termination without cause, resignation for good reason, death, disability, and expiration of the employment term;

(j) Change in control severance provisions, including definition of "change in control," severance multiplier (typically 2x–3x base salary plus target bonus), equity award acceleration, and related benefit continuation;

(k) Section 280G parachute payment analysis, including structuring to optimize after-tax outcomes (modified cutback vs. excise tax gross-up approaches);

(l) Restrictive covenant provisions, including non-competition, non-solicitation of employees and customers, non-disparagement, and confidentiality obligations;

(m) Section 409A compliance for all deferred compensation elements;

(n) Indemnification and advancement of expenses provisions;

(o) Directors' and officers' insurance coverage, including tail coverage provisions; and

(p) Clawback provisions consistent with NYSE listing standards and the Dodd-Frank Act.

2. Coordination with UK Counsel on Secondary Service Agreement. Calderwood & Harkness will coordinate with Moorfield Bates LLP regarding a secondary UK service agreement between Northgate Telecommunications PLC and Mr. Harding, to be governed by the laws of England and Wales. The UK service agreement will address Mr. Harding's status as a statutory director of the PLC, compliance with the UK Corporate Governance Code 2024 (including Provision 40 regarding notice periods and severance caps), and FCA Senior Managers & Certification Regime requirements. Calderwood & Harkness will not provide UK employment law advice but will ensure that the US and UK agreements are consistent and complementary, and that the dual-contract architecture appropriately allocates compensation obligations, tax liabilities, and social security contributions between the US and UK entities.

3. Term Sheet Preparation and Negotiation Correspondence. Preparation and circulation of an initial term sheet summarizing the proposed key terms of employment, to be delivered to Hargrove & Liddell LLP. Management of all subsequent negotiation correspondence, redlines, and counter-proposals through the execution of definitive documentation.

4. Compensation Advisory. Advising the client on the structure and design of the overall compensation package, including:

(a) Base salary positioning relative to peer-group benchmarks (in coordination with Whitmore Hobson LLP);

(b) Annual incentive plan design, including target and maximum payout levels and performance metric selection;

(c) Long-term incentive equity award design, including RSU and PSU mix, vesting schedules, performance conditions, and grant values under the 2022 Omnibus Incentive Plan;

(d) Sign-on make-whole payment structure, including replacement of forfeited Marlowe Asset Management equity (estimated at $23,400,000), with consideration of retention conditions, repayment obligations, and tax treatment;

(e) Perquisites and benefits design; and

(f) Retirement and pension benefit structure, including ERISA implications.

5. Change in Control Analysis. Comprehensive analysis and drafting of change-in-control severance provisions, including:

(a) Definition of "change in control" (conforming to or departing from the 2022 Omnibus Incentive Plan definition, as appropriate);

(b) Severance multiplier and benefit continuation period;

(c) Equity award acceleration (single-trigger vs. double-trigger analysis);

(d) Section 280G parachute payment analysis, including estimation of the candidate's "base amount," calculation of the safe harbor limit, modeling of potential excise tax exposure under various severance scenarios, and evaluation of modified cutback versus excise tax gross-up approaches;

(e) Coordination with the client's proxy advisors (Veltrano Proxy Advisors, Inc.) regarding institutional shareholder and ISS/Tarrant Partners LLC sensitivity to change-in-control severance and tax gross-up provisions.

6. Restrictive Covenant Analysis and Drafting. Drafting and advising on post-employment restrictive covenants, including:

(a) Non-competition provisions (duration, geographic scope, and scope of restricted activities, analyzed under current New York law);

(b) Non-solicitation of employees and customers;

(c) Non-disparagement (mutual obligations);

(d) Garden leave provisions (particularly for the UK service agreement, in coordination with Moorfield Bates);

(e) Analysis of enforceability under New York law, including consideration of pending New York non-compete ban legislation and its potential impact on covenant design; and

(f) Analysis of the interaction between the proposed Northgate restrictive covenants and Mr. Harding's existing 12-month post-termination non-competition obligation to Marlowe Asset Management Digital Holdings, Inc., including assessment of whether the Marlowe Asset Management non-compete would restrict Mr. Harding's ability to commence employment with Northgate and, if so, recommended strategies for managing the transition timeline.

7. Section 409A Compliance. Review and advice on compliance with Section 409A of the Internal Revenue Code with respect to all deferred compensation elements of the employment agreement, including severance payments, annual incentive deferrals, equity awards with deferred settlement features, and any supplemental retirement benefits.

8. Indemnification and D&O Insurance. Drafting and advising on indemnification and advancement of expenses provisions in the employment agreement, including coordination with the client's D&O insurance broker regarding coverage under the existing policy (Ashdown Surety & Insurance Co., Policy No. ASI-D&O-NTP-2024-4471) and tail coverage provisions for the incoming CEO.

9. External Advisor Coordination. Coordination with the following external advisors retained by the client:

(a) Whitmore Hobson LLP — independent compensation consultant; lead advisor Dr. Rachel Whitmore; providing peer-group benchmarking, compensation quantum recommendations, and pay-ratio analysis;

(b) Galloway & Partners — independent auditors; lead audit partner Clive Warburton; consulted on equity compensation accounting treatment under ASC 718 (US GAAP) and IFRS 2 (for NTP group reporting);

(c) Veltrano Proxy Advisors, Inc. — proxy advisory and governance consultant; lead advisor Sandra Kolb; assessing shareholder sensitivity to CEO compensation quantum and change-in-control provisions, and providing an informal read on likely ISS and Tarrant Partners LLC reaction to the proposed package; and

(d) Moorfield Bates LLP — UK employment law counsel; lead partner Simon Aldridge; associate Hannah Carmichael; advising on the UK service agreement, SM&CR compliance, and dual-contract architecture.

10. Interaction with Candidate's Counsel. All negotiation communications with the candidate will be conducted through Mr. Harding's personal counsel: Victoria Hargrove, Partner, and Nathan Chu, Associate, of Hargrove & Liddell LLP (51 Madison Avenue, 30th Floor, New York, NY 10010). Calderwood & Harkness will manage the negotiation process, prepare and respond to redlines, and conduct in-person or telephonic negotiation sessions with Hargrove & Liddell as required.

Scope Exclusions

The following matters are expressly excluded from the scope of Calderwood & Harkness's engagement:

(a) UK employment law advice. All UK employment law advice, including drafting and negotiation of the UK service agreement, FCA SM&CR compliance, and UK Corporate Governance Code analysis, will be provided by Moorfield Bates LLP under a separate engagement with the client. Calderwood & Harkness will coordinate with Moorfield Bates but will not render opinions on matters of English law.

(b) Tax return preparation or personal tax advice for Mr. Harding. Calderwood & Harkness represents Northgate Telecommunications PLC, not the candidate. The firm will not provide personal tax advice or tax return preparation services to Mr. Harding. The firm's analysis of tax matters (including Section 280G, Section 409A, and tax equalization) will be conducted from the perspective of advising the Company on structuring and compliance obligations.

(c) Compensation benchmarking and peer-group analysis. Quantitative compensation benchmarking, peer-group construction, and pay-ratio analysis are being conducted by Whitmore Hobson LLP as the client's independent compensation consultant. Calderwood & Harkness will rely on Whitmore Hobson's data and recommendations in advising the client on compensation structure but will not independently conduct benchmarking analyses.

(d) Audit or accounting opinions. Accounting treatment of equity compensation (ASC 718 / IFRS 2) and related matters will be addressed by Galloway & Partners, the client's independent auditors. Calderwood & Harkness will coordinate with Galloway & Partners as needed but will not render accounting opinions.

(e) Proxy advisory opinions. Proxy advisory analysis, shareholder engagement strategy, and assessment of ISS/Tarrant Partners LLC reactions are being conducted by Veltrano Proxy Advisors, Inc. Calderwood & Harkness will coordinate with Veltrano but will not independently provide proxy advisory opinions.

SECTION 6: COUNTERPARTIES AND ADVERSE / RELATED PARTIES

Counterparty (Candidate)

Name: Marcus Elliot Harding

Residence: 14 Gramercy Park South, Apt. 12A, New York, NY 10003

Current Title: President & Chief Operating Officer, Marlowe Asset Management Digital Holdings, Inc.

Role: Mr. Harding is the incoming CEO candidate for Northgate Telecommunications PLC. While Mr. Harding is not an adverse party in the traditional litigation sense, he occupies the position of counterparty in an arm's-length negotiation. Calderwood & Harkness represents the Company in this negotiation and does not represent Mr. Harding.

Personal Counsel: Victoria Hargrove, Partner, and Nathan Chu, Associate, of Hargrove & Liddell LLP, 51 Madison Avenue, 30th Floor, New York, NY 10010. Telephone: +1 (212) 555-7720. All communications with the candidate regarding negotiation terms will be conducted through Hargrove & Liddell.

Candidate's Current Employer (Related Party for Conflicts Purposes)

Name: Marlowe Asset Management Digital Holdings, Inc.

Entity Type: Delaware corporation

Address: 200 Technology Way, Suite 4000, San Jose, CA 95110

Stock Listing: NYSE: VDHI

Market Capitalization (approximate): $18.4 billion (as of May 31, 2024)

Annual Revenue (FY2023): $9.7 billion

Relevance to Engagement: Marlowe Asset Management Digital Holdings, Inc. is Mr. Harding's current employer and is relevant to this engagement in several respects:

(a) Forfeited Equity. Mr. Harding holds unvested equity awards at Marlowe Asset Management with an estimated aggregate value of approximately $23,400,000 (based on Marlowe Asset Management's closing stock price as of May 31, 2024). Upon resignation from Marlowe Asset Management, Mr. Harding would forfeit these unvested awards. The make-whole component of the Northgate compensation package must be structured to compensate for this forfeiture.

(b) Existing Non-Compete. Mr. Harding is subject to a 12-month post-termination non-competition covenant with Marlowe Asset Management, which has US geographic scope and restricts Mr. Harding from providing services to competitors of Marlowe Asset Management in the telecommunications and digital infrastructure sectors. Analysis of the interaction between this existing non-compete and the proposed Northgate non-compete, as well as the impact on the transition timeline, is required.

(c) Compensation Benchmark. Mr. Harding's current total direct compensation at Marlowe Asset Management (base salary, annual incentive, long-term equity awards, perquisites, and other compensation) serves as the primary benchmark for the Northgate offer and for establishing the quantum of the make-whole and uplift components.

(d) Section 280G Base Amount. Mr. Harding's "base amount" for purposes of Section 280G analysis is estimated at $7,840,000, calculated as the average of his W-2 compensation from Marlowe Asset Management for the five calendar years 2019–2023.

Conflicts Clearance Summary

A comprehensive conflicts check was conducted through the firm's conflicts management system, searching against the following parties:

• Northgate Telecommunications PLC (and all known subsidiaries and affiliates, including Northgate Telecommunications US, Inc.)

• Marcus Elliot Harding

• Marlowe Asset Management Digital Holdings, Inc.

• Hargrove & Liddell LLP

All parties were cleared on June 3, 2024. The conflicts clearance was approved by Renata Vasquez (Responsible Partner) and Bernard Crawford (Billing Partner). A detailed conflicts clearance memorandum dated June 3, 2024, documenting the search methodology, results, and analysis, is on file with the Office of the General Counsel (Conflicts Memorandum Reference: CM-2024-06-03-07831).

No current or former representations of the firm present a disqualifying conflict or require client consent. The firm has no current or recent representations of Marcus Elliot Harding, Marlowe Asset Management Digital Holdings, Inc., or Hargrove & Liddell LLP.

SECTION 7: FEE ARRANGEMENT

Fee Basis: Hourly. All fees will be calculated on the basis of actual time expended by the engagement team members at their applicable hourly rates, as set forth below.

Hourly Rates:

These rates are effective as of June 1, 2024, and are subject to the firm's annual rate adjustment, typically effective January 1 of each calendar year, as provided in the engagement letter. Any additional timekeepers assigned to the matter will be billed at rates commensurate with their experience level and consistent with the rate structure approved by the client.

Retainer: A retainer of $75,000 has been received from the client and deposited into the firm's client trust account (IOLA) in accordance with applicable rules of the New York Rules of Professional Conduct. The retainer will be held in trust and applied to the final invoice upon conclusion of the engagement. The retainer is not an estimate of total fees and does not limit the firm's entitlement to compensation for services rendered.

Billing Cycle: Monthly. Invoices will be prepared and submitted to the client on a monthly basis, with payment due within 30 days of invoice date, as provided in the engagement letter. Invoices will be submitted to Elaine Whitford, Senior Vice President & Group General Counsel, at the client's US address, or by electronic transmission as directed.

Estimated Budget: The engagement team anticipates discussing a detailed budget with the client at the outset of the engagement. The initial estimate for total fees and expenses is in the range of $400,000 to $600,000, depending on the complexity of the compensation structure, the duration and intensity of negotiation with Hargrove & Liddell LLP, and the extent of coordination required with external advisors. This estimate is provided for planning purposes only and does not constitute a cap on fees. Actual fees may be higher or lower depending on the course of the engagement. Factors that could increase the total cost beyond the estimated range include protracted negotiation, complex Section 280G structuring, extensive interaction with proxy advisors, or unforeseen regulatory developments (such as the enactment of New York non-compete ban legislation during the engagement period).

Engagement Letter Reference: The engagement letter governing this matter is dated June 4, 2024, and was executed by Elaine Whitford on behalf of Northgate Telecommunications PLC and by Renata Vasquez on behalf of Calderwood & Harkness LLP. The engagement letter sets forth the scope of representation, fee arrangements, billing policies, conflicts of interest provisions, limitation of liability, and other terms governing the attorney-client relationship. A fully executed copy of the engagement letter is maintained in the matter file.

SECTION 8: GOVERNING LAW AND JURISDICTION

Governing Law of Proposed US Employment Agreement: The primary executive employment agreement between Northgate Telecommunications US, Inc. and Marcus Elliot Harding will be governed by the laws of the State of New York, without regard to conflicts of law principles. The agreement is expected to include a consent to exclusive jurisdiction in the state and federal courts located in the Borough of Manhattan, City of New York.

Governing Law of Proposed UK Service Agreement: The secondary UK service agreement between Northgate Telecommunications PLC and Marcus Elliot Harding will be governed by the laws of England and Wales. UK legal advice on this agreement will be provided by Moorfield Bates LLP.

Governing Law of Engagement Letter (Calderwood & Harkness — Northgate): The engagement letter between Calderwood & Harkness LLP and Northgate Telecommunications PLC is governed by the laws of the State of New York.

Relevant Regulatory Frameworks: The engagement team will need to consider and, where applicable, advise the client with respect to the following regulatory and legal frameworks:

(a) U.S. Internal Revenue Code Section 280G. The "golden parachute" provisions of Section 280G impose a 20% excise tax on "excess parachute payments" and deny the employer a deduction for such payments. The Section 280G analysis is critical to structuring the change-in-control severance provisions and the sign-on make-whole payments, given Mr. Harding's estimated base amount of $7,840,000 and the anticipated magnitude of potential parachute payments.