1001-00004 · Ardent Capital Partners · Tax

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PRIVILEGED AND CONFIDENTIAL — ATTORNEY WORK PRODUCT

CALDERWOOD & HARKNESS LLP

March 26, 2025

Tax Provisions Review — Merger Agreement

(Internal Mark-Up Commentary)

Re: Internal Commentary on Tax Provisions of the Agreement and Plan of Merger dated March 24, 2025 among Ardent Apex Holdings Inc. ("Parent"), Ardent Apex Merger Sub Inc. ("Merger Sub"), and Luminex Systems Holdings Inc. (the "Company" or the "Target")

This memorandum constitutes attorney work product prepared in anticipation of litigation and in connection with the rendering of legal advice. It is protected by the attorney-client privilege and the work product doctrine. This memorandum is intended solely for internal use by the attorneys and professionals identified above and should not be disclosed to any person outside of Calderwood & Harkness LLP without the express written authorization of the author. Unauthorized disclosure may result in waiver of privilege.

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I. Executive Summary and Purpose

This memorandum provides my internal commentary and mark-up notes on the tax-related provisions of the executed Agreement and Plan of Merger dated March 24, 2025 (the "Merger Agreement"). The Merger Agreement was signed two days ago, and this commentary is intended to serve as a comprehensive reference for the Calderwood & Harkness deal team as we proceed toward closing and address post-signing, pre-closing tax matters. This memorandum does not constitute a comprehensive tax opinion and should not be relied upon as such outside the context of this engagement. Rather, it is designed to identify the key tax provisions, assess their adequacy and market-conformity, flag areas requiring further attention, and assign responsibility for outstanding action items.

Transaction Overview. The transaction involves a reverse triangular merger under the Delaware General Corporation Law. Ardent Apex Merger Sub Inc., a newly formed Delaware corporation and wholly owned subsidiary of Ardent Apex Holdings Inc., will merge with and into Luminex Systems Holdings Inc., with the Company surviving the merger as a wholly owned subsidiary of Parent. The aggregate equity value of the transaction is $2,800,000,000, calculated at $20.00 per share on approximately 140,000,000 fully diluted shares of the Company's common stock. Ardent Apex Holdings Inc. is the acquisition vehicle formed by Ardent Capital Partners III LP ("Ardent CP III"), the private equity sponsor. The transaction is expected to close in the July–August 2025 timeframe, subject to satisfaction of customary closing conditions, including receipt of HSR Act clearance and any required foreign antitrust approvals.

Scope of This Memorandum. This memorandum addresses the following categories of tax provisions within the Merger Agreement:

(A) Tax Representations and Warranties of the Target (Article III);

(B) Tax Representations and Warranties of Parent and Merger Sub (Article IV);

(D) Tax Indemnification provisions (Article VIII);

(E) Survival periods applicable to tax representations;

(F) Section 338(h)(10) election mechanics;

(G) Withholding provisions;

(H) Transfer tax allocation;

(I) Interaction with other Merger Agreement provisions (working capital, MAE definition, interim operating covenants); and

(J) Coordination with external advisors, including Pendleton & Associates LLP (Richard Chow, buyer's tax and accounting advisor), Hargrove Thornton LLP (Margaret Dawson, Target's auditor), Breitfeld Hess & Partner AG (Dr. Lukas Breitfeld, Swiss counsel), and other local counsel.

Overall Assessment. The negotiated tax provisions are market-standard for a transaction of this size and complexity. They reflect a balanced allocation of risk between Buyer and the selling stockholders, with several provisions that are meaningfully Buyer-favorable — most notably the Section 338(h)(10) election right and the extended survival period for tax representations. I have flagged several points for post-closing attention and one area — the Section 338(h)(10) election — that requires additional coordination and analysis before the closing date to ensure the deal team is prepared to act promptly within the 60-day post-closing election window. The priority items are summarized in Section XI below and assigned to the appropriate team members.

II. Tax Representations and Warranties of the Company (Article III / Section 3.XX of the Merger Agreement)

A. Scope of Target's Tax Representations

The Target's tax representations and warranties are set forth in Section 3.XX of the Merger Agreement and are among the more detailed and comprehensive provisions in the agreement, reflecting the multi-jurisdictional footprint of the Luminex group and the significance of tax exposure in a $2.8 billion enterprise SaaS acquisition. The representations cover Luminex Systems Holdings Inc. and all of its direct and indirect subsidiaries, which constitute the following entities:

The tax representations apply broadly to cover all U.S. federal, state, and local taxes of the domestic entities (Luminex Holdings and Luminex Systems Inc.) as well as all non-U.S. taxes payable by, or with respect to, each foreign subsidiary in its respective jurisdiction of organization and any other jurisdiction in which it has a taxable presence. This multi-jurisdictional scope is appropriate given the operational footprint of the Luminex group, which derives revenues and maintains employees, offices, and intellectual property in each of these jurisdictions.

The key representations made by the Target with respect to tax matters include the following:

(i) Timely Filing of All Tax Returns. The Company and each of its subsidiaries have timely filed (or have caused to be timely filed), taking into account any applicable extensions, all income tax returns, franchise tax returns, value-added tax returns, payroll and employment tax returns, and all other material tax returns required to be filed with any taxing authority in any jurisdiction.

(ii) Timely Payment of All Taxes. The Company and each of its subsidiaries have timely paid (or have caused to be timely paid) all taxes shown as due and owing on such tax returns, and all other material taxes due and owing to any taxing authority, whether or not shown on any tax return.

(iii) No Pending or Threatened Audits, Assessments, or Proceedings. There are no pending or, to the knowledge of the Company, threatened audits, examinations, assessments, deficiency notices, proposed adjustments, or other proceedings by any taxing authority with respect to any taxes or tax returns of the Company or any of its subsidiaries.

(iv) No Tax Liens. There are no liens for taxes upon the assets of the Company or any of its subsidiaries, other than liens for taxes not yet due and payable or being contested in good faith by appropriate proceedings and for which adequate reserves have been established in accordance with GAAP (collectively, "Permitted Liens").

(v) No Extensions or Waivers of Statute of Limitations. Neither the Company nor any of its subsidiaries has granted or been requested to grant any waiver or extension of the statute of limitations applicable to the assessment or collection of any tax, which waiver or extension remains in effect as of the date of the Merger Agreement.

(vi) No Listed or Reportable Transactions. Neither the Company nor any of its subsidiaries has participated in any "listed transaction" within the meaning of Treasury Regulations Section 1.6011-4(b)(2) or any "reportable transaction" within the meaning of Treasury Regulations Section 1.6011-4(b)(1) for which a disclosure statement was required to be filed under Section 6011 of the Internal Revenue Code.

(vii) Compliance with Transfer Pricing Rules. All intercompany transactions between and among the Company and its subsidiaries have been conducted on arm's-length terms in compliance with Section 482 of the Code and the Treasury Regulations thereunder, and in compliance with the OECD Transfer Pricing Guidelines for Multinational Enterprises and Tax Administrations, as applicable in each relevant jurisdiction.

(viii) No Tax Sharing, Allocation, or Indemnity Agreements. Neither the Company nor any of its subsidiaries is a party to, is bound by, or has any obligation under any tax sharing agreement, tax allocation agreement, tax indemnity agreement, or similar arrangement with any person (other than agreements entered into in the ordinary course of business the primary subject matter of which is not taxes, such as ordinary-course commercial agreements with customers or vendors that contain customary tax allocation or gross-up provisions).

(ix) Eligibility for Treaty Benefits. The Company and its subsidiaries are, and have at all relevant times been, eligible to claim the benefits of applicable income tax treaties, including, without limitation, the Convention between the United States of America and the Swiss Confederation for the Avoidance of Double Taxation with Respect to Taxes on Income (the "U.S.-Switzerland Tax Treaty"), which is relevant to the reduction of Swiss withholding tax on dividends and other payments from Luminex Systems AG to its U.S. parent.

(x) FIRPTA Representation. The Company is not, and has not been at any time during the applicable period specified in Section 897(c)(1)(A)(ii) of the Code, a "United States real property holding corporation" within the meaning of Section 897(c)(2) of the Code.

These representations are each subject to the qualification and exception mechanisms set forth in the Merger Agreement, including the disclosure schedules and the applicable materiality and knowledge qualifiers, which are discussed further in Section II.B below.

B. Commentary on Specific Representations

Having reviewed each of the tax representations in detail, I offer the following commentary on the provisions that I believe warrant particular attention from the deal team.

Transfer Pricing (Section 482 / OECD Guidelines). The transfer pricing representation is, in my assessment, the single most consequential tax representation in the Merger Agreement. This assessment is driven by the existing intercompany intellectual property licensing arrangement between Luminex Systems AG (the Swiss subsidiary) and Luminex Systems Inc. (the U.S. operating subsidiary). Under the current structure, Luminex AG licenses its proprietary enterprise SaaS platform technology and related intellectual property to Luminex Systems Inc. in exchange for a royalty payment calculated at 4.5% of Luminex Systems Inc.'s U.S. net revenues. Based on Luminex Systems Inc.'s 2024 revenue of $194,800,000, the implied annual royalty payment is approximately $8,766,000. This royalty payment has the effect of shifting a portion of the Luminex group's taxable income from the United States (where the federal corporate tax rate is 21%, plus applicable state income taxes) to Switzerland (where the effective cantonal/federal tax rate applicable to Luminex AG is understood to be approximately 11.5% under the Glenrock Assurance cantonal regime, though this should be confirmed with Breitfeld Hess & Partner).

The significance of this representation is heightened by the proposed post-closing restructuring of the intercompany royalty rate from 4.5% to 6.0% of U.S. net revenues, as recommended by Pendleton & Associates LLP based on its preliminary benchmark study of comparable uncontrolled transactions. The increase from 4.5% to 6.0% represents a 33% increase in the royalty rate and would result in a meaningful additional shift of income from the United States to Switzerland. For this restructuring to withstand scrutiny from the IRS and applicable foreign tax authorities, the historical compliance of the existing 4.5% rate must be defensible — an IRS challenge to the historical rate could not only result in additional U.S. tax liability for pre-closing periods (which would be indemnifiable by the sellers) but could also undermine the credibility of the proposed 6.0% rate for post-closing periods.

I recommend that the deal team confirm that the transfer pricing representation in the Merger Agreement covers not merely the filing of required transfer pricing documentation but also the substantive arm's-length nature of the existing 4.5% royalty rate for all open tax years. If the representation is limited to procedural compliance (i.e., the existence of contemporaneous documentation), it may not cover a substantive adjustment by the IRS under Section 482. The disclosure schedules should be reviewed for any exceptions to this representation. Additionally, I recommend coordinating with Pendleton & Associates LLP (Richard Chow) to confirm that the benchmark study addresses both the historical reasonableness of the 4.5% rate and the prospective supportability of the 6.0% rate, as these analyses are interrelated.

Swiss Withholding Tax Representation. The Company represents that Luminex Systems AG has properly withheld and remitted the Swiss anticipatory tax (Verrechnungssteuer) at the 35% statutory rate on all applicable distributions, and that all applicable refund claims have been properly filed with the Swiss Federal Tax Administration. This representation is important because the Swiss anticipatory tax is a significant cash flow item for the Luminex group — on a gross distribution from Luminex AG to its U.S. parent, 35% must be withheld at source, with the U.S. parent entitled to claim a refund of the excess over the 5% treaty rate (i.e., a refund of 30% of the distribution amount) under the U.S.-Switzerland Tax Treaty.

During due diligence, we coordinated with Breitfeld Hess & Partner AG (Dr. Lukas Breitfeld) on Swiss tax compliance verification. Dr. Breitfeld's team reviewed Luminex AG's withholding tax filings and refund claims for the period from 2021 (the year of the reorganization) through 2024. I understand that no material exceptions were identified, but the final Swiss tax due diligence report should be reviewed by the deal team when received. Any open refund claims should be identified and quantified, as these may bear on the working capital calculation or the refund allocation provision discussed in Section V.C below.

No Tax Sharing Agreements. The representation that neither the Company nor any of its subsidiaries is party to any tax sharing, allocation, or indemnity agreement (other than ordinary-course commercial arrangements) is relevant because of the 2021 reorganization and inversion that created the current Luminex Holdings U.S. parent structure. Luminex Holdings was incorporated on June 14, 2021, as a Delaware corporation, and the reorganization involved a 1:1 share exchange through which Luminex Holdings became the U.S. parent of the former Swiss parent, Luminex Systems AG. In connection with that reorganization, intercompany agreements may have been entered into that could constitute tax sharing or allocation arrangements — for example, an agreement governing the allocation of U.S. and Swiss tax obligations between Luminex Holdings and Luminex AG, or an agreement addressing the treatment of pre-reorganization tax attributes. The representation confirms that no such agreements exist outside the ordinary course, and the disclosure schedules should be reviewed to confirm no exceptions have been scheduled.

Additionally, for the period since the 2021 reorganization, Luminex Holdings has been the common parent of a U.S. consolidated group that includes Luminex Systems Inc. as a member. The filing of a consolidated U.S. federal income tax return implies the existence of at least an informal tax allocation arrangement between the consolidated group members. The representation should be read as excluding the ordinary consolidated return filing arrangement, but this should be confirmed.

FIRPTA Certificate. The Target's representation that it is not a "United States real property holding corporation" within the meaning of Section 897(c)(2) of the Code is consistent with the FIRPTA certificate that will be delivered at closing pursuant to Treasury Regulations Section 1.1445-2(c)(3). This certificate, once delivered, will relieve the Buyer and the paying agent of the obligation to withhold under Section 1445 of the Code on payments to non-U.S. stockholders. The representation in the Merger Agreement provides contractual support for the FIRPTA certificate and gives rise to an indemnification remedy if the representation proves incorrect.

I note that the FIRPTA analysis depends on the composition of the Company's assets. Because the Company is an enterprise SaaS business, its primary assets are intellectual property, customer relationships, and cash/receivables — none of which constitutes "United States real property interests" under Section 897. The Company does not own any significant real property in the United States. Accordingly, the representation appears well-founded. The separate FIRPTA / NRA Withholding Analysis Memorandum addresses this topic in greater detail and should be reviewed by the deal team in connection with the closing deliverables checklist.

Materiality Qualifiers. Several of the tax representations are qualified by "material" or "Material Adverse Effect" standards. For example, the representation regarding timely filing of tax returns is qualified by reference to "all material Tax Returns," and the representation regarding payment of taxes refers to "all material Taxes." The representation regarding no pending or threatened tax proceedings is qualified by "to the knowledge of the Company," which is defined in the Merger Agreement by reference to the actual knowledge of specified individuals after reasonable inquiry.

These qualifiers are typical in negotiated merger agreements and generally are not cause for concern. However, I note that the Material Adverse Effect definition in the Merger Agreement (Section 1.XX) includes carve-outs for (a) general economic conditions, (b) industry-wide conditions, (c) changes in law (including changes in tax law), (d) pandemic-related effects, and (e) changes in GAAP — in each case, except to the extent such matters disproportionately affect the Target relative to similarly situated companies in the enterprise software industry. The practical effect of these carve-outs is to limit the scope of tax representation breaches that could support an indemnification claim predicated on a Material Adverse Effect. A tax deficiency arising from a general change in tax law (for example, a retroactive increase in the corporate tax rate) would not constitute a breach of the tax representations unless the Company were disproportionately affected. This is a reasonable allocation of risk, but the Buyer should be aware that the MAE carve-outs effectively narrow the universe of indemnifiable tax claims when those claims are tied to representations qualified by an MAE standard.

C. Adequacy Assessment

Overall, the Target's tax representations are comprehensive and consistent with market practice for a $2.8 billion enterprise SaaS acquisition involving multi-jurisdictional operations. The representations cover the full range of federal, state, local, and international tax matters that one would expect to see in a transaction of this nature, and the level of specificity — particularly with respect to transfer pricing, Swiss withholding tax, FIRPTA status, and the absence of listed or reportable transactions — reflects the sophistication of both the transaction and the advisors involved.

One area where additional specificity might have been desirable is with respect to the Company's tax attributes — specifically, the existence and amount of any net operating loss carryforwards, tax credit carryforwards, or other tax attributes that could be affected by the change in ownership under Section 382 or Section 383 of the Code. The Merger Agreement does not include a specific representation regarding the Company's tax attributes. While this is not unusual in a fully taxable acquisition (where the Buyer is purchasing 100% of the stock and the value of pre-existing tax attributes is effectively reflected in the purchase price), it would be useful to confirm through the disclosure schedule review whether the Company has any material NOL or credit carryforwards, and whether any prior ownership changes have occurred that would limit the utilization of such attributes under Section 382. This is particularly relevant in light of the 2021 reorganization, which may have constituted an "ownership change" for Section 382 purposes depending on the composition of the Company's stockholders before and after the reorganization.

I recommend that Ryan Kowalski coordinate the review of the disclosure schedules delivered by Caldwell, Raines & Sheppard LLP (Patricia Okonkwo / Daniel Feinberg) on behalf of the Target, with particular attention to any scheduled exceptions to the tax representations. Any exceptions should be flagged for my review and for discussion with the deal team.

III. Tax Representations and Warranties of Parent and Merger Sub (Article IV / Section 4.XX)

Parent (Ardent Apex Holdings Inc., EIN: 93-2178435) and Merger Sub (Ardent Apex Merger Sub Inc., EIN: 93-2178502) make limited tax representations in Article IV of the Merger Agreement. These representations are confined to the following:

(i) Each of Parent and Merger Sub is a newly formed entity with no prior tax history, no tax liabilities, and no tax obligations other than those arising in connection with its formation and the transactions contemplated by the Merger Agreement.

(ii) Each of Parent and Merger Sub has obtained or applied for an employer identification number from the Internal Revenue Service.

(iii) Merger Sub has not engaged in any business activity, acquired any assets, or incurred any liabilities other than in connection with its formation and the merger and the other transactions contemplated by the Merger Agreement.

These representations are entirely standard for acquisition-vehicle entities in sponsored transactions. Ardent Apex Holdings Inc. was incorporated in Delaware on March 5, 2025, and Ardent Apex Merger Sub Inc. was incorporated in Delaware on March 7, 2025 — both formed solely for the purpose of consummating this transaction. Neither entity has any operating history, tax filing history, or pre-existing tax exposure. The representations serve primarily to confirm the "clean" status of the acquisition vehicles and to ensure that the Buyer side of the transaction does not introduce any unexpected tax liabilities into the post-closing structure.

There is no substantive tax exposure arising from the Buyer-side representations. No further analysis is required with respect to these provisions.

IV. Pre-Closing Tax Covenants (Article V / Section 5.XX)

A. Ordinary Course Tax Covenants

Article V of the Merger Agreement sets forth the covenants governing the parties' conduct during the period between the signing date (March 24, 2025) and the closing date (estimated July–August 2025). The tax-specific covenants applicable to the Target during this interim period are as follows:

(i) Timely Filing. The Target covenants to timely file, or cause to be timely filed, all tax returns required to be filed by the Company or any of its subsidiaries that are due (taking into account applicable extensions) on or before the closing date. All such tax returns shall be prepared in a manner consistent with past practice, except as otherwise required by applicable law.

(ii) Timely Payment. The Target covenants to timely pay, or cause to be timely paid, all taxes shown as due and owing on such tax returns, and all other taxes due and owing to any taxing authority, whether or not shown on any tax return.

(iii) No Amendment of Tax Returns. The Target shall not amend, or cause to be amended, any previously filed tax return of the Company or any of its subsidiaries without the prior written consent of Parent, which consent shall not be unreasonably withheld, conditioned, or delayed.

(iv) No Tax Elections. The Target shall not make, change, or revoke any tax election (including any election under Section 338, 336, 754, or any analogous provision of state, local, or foreign law) with respect to the Company or any of its subsidiaries without the prior written consent of Parent.

(v) No Tax Settlements. The Target shall not settle or compromise any tax claim, audit, examination, or proceeding in respect of the Company or any of its subsidiaries where the settlement or compromise amount exceeds $2,000,000, without the prior written consent of Parent, which consent shall not be unreasonably withheld, conditioned, or delayed.

(vi) No Closing Agreements. The Target shall not enter into any closing agreement, advance pricing agreement, or similar agreement with any taxing authority with respect to the Company or any of its subsidiaries without the prior written consent of Parent.

(vii) No Surrender of Refund Claims. The Target shall not surrender any right to claim a tax refund, offset, or credit with respect to the Company or any of its subsidiaries without the prior written consent of Parent.

Commentary. These covenants are standard for the pre-closing period in a leveraged buyout or private equity acquisition. The $2,000,000 threshold for tax settlements requiring Parent's consent is appropriately calibrated and aligns with the general interim operating covenant threshold for contract commitments exceeding $2,000,000 set forth elsewhere in Article V of the Merger Agreement. This alignment provides consistency across the interim covenants and reduces the risk of inadvertent breaches.

The prohibition on making, changing, or revoking tax elections is of critical importance in this transaction. As discussed in Section VII below, the Merger Agreement grants Parent the right (but not the obligation) to make a joint election under Section 338(h)(10) of the Code. This is a post-closing election to be made by Buyer/Parent within 60 days after the closing date. The pre-closing covenant ensures that the Target does not take any unilateral action during the interim period that would impair the availability, validity, or economic value of the Section 338(h)(10) election. For example, if the Target were to make an election under Section 338(g) or revoke the consolidated return election, the consequences for the Section 338(h)(10) analysis could be significant.

Additionally, the covenant requiring Parent's consent for amendments to previously filed tax returns is important because an amendment could alter the Company's reported tax positions, create or eliminate potential tax exposures, or affect the working capital calculation. The "not to be unreasonably withheld" standard provides appropriate flexibility for non-controversial amendments (e.g., correction of clerical errors) while preserving the Buyer's right to review any substantive changes to the Company's tax filings.

B. Access and Cooperation

The Target covenants to provide Parent and its advisors — including, specifically, Pendleton & Associates LLP (Richard Chow) — with reasonable access during normal business hours to the tax records, tax returns, and tax work papers of the Company and its subsidiaries during the pre-closing period. This access right is subject to customary limitations, including compliance with applicable law, preservation of attorney-client privilege, and reasonable protections for competitively sensitive information.

In addition, the Target covenants to cooperate with Parent and its advisors in the preparation of any tax-related analysis reasonably required in connection with the transactions contemplated by the Merger Agreement, including the analysis of the potential Section 338(h)(10) election and the preliminary purchase-price allocation. This cooperation covenant is important given the ongoing work being conducted by Pendleton & Associates LLP on the Section 338(h)(10) cost-benefit analysis, which requires detailed asset-level and entity-level information from the Target — including fair market value estimates for intangible assets, fixed assets, inventory, and other balance-sheet items — that may not have been fully available during the pre-signing due diligence process.

I recommend that the deal team promptly submit an information request to the Target (through Caldwell, Raines & Sheppard LLP) for the additional data needed by Pendleton & Associates LLP to finalize the Section 338(h)(10) analysis. The sooner this information is obtained, the sooner the cost-benefit analysis can be completed, and the better positioned we will be to advise Ardent Capital on whether to make the election within the 60-day post-closing window.

C. Notification of Tax Proceedings

The Target covenants to promptly notify Parent in writing of any notice of audit, examination, assessment, proposed adjustment, deficiency notice, or other tax proceeding received by the Company or any of its subsidiaries after the date of the Merger Agreement (March 24, 2025) and before the closing date. This notification covenant is subject to a requirement that the notification be provided within five (5) business days of receipt by the Company of any such notice.

This is a standard and important provision. Any tax proceeding initiated during the pre-closing period could affect the Buyer's assessment of the Company's tax exposure and, depending on the magnitude of the proceeding, could be relevant to the closing conditions or the indemnification provisions. I recommend that the deal team coordinate with the litigation and regulatory due diligence team to ensure that any tax-related proceedings notified under this covenant are also captured in the Litigation & Regulatory Due Diligence Summary Memorandum and are reflected in any updated disclosure schedules delivered at closing.

V. Post-Closing Tax Covenants (Article V / Section 5.XX continued)

A. Tax Return Preparation and Filing

Pre-Closing Tax Periods and Straddle Periods. The Merger Agreement provides that following the closing, Parent shall control the preparation and filing of all tax returns of the surviving corporation (Luminex Systems Holdings Inc.) and its subsidiaries for (a) any taxable period ending on or before the closing date ("Pre-Closing Tax Periods"), and (b) any taxable period beginning before and ending after the closing date ("Straddle Periods"). This allocation of control is standard and appropriate in a 100% acquisition — the Buyer, as the sole owner of the surviving corporation after the closing, is in the best position to control the tax return preparation and filing process.

The Merger Agreement provides that the Target Stockholder Representative (Ridgeline Growth Equity Fund II LP, acting through Jonathan Ashford as the designated Stockholder Representative) shall have the right to review and comment on any tax return for a Pre-Closing Tax Period or a Straddle Period at least thirty (30) days before the due date of such tax return (including applicable extensions). Parent shall consider in good faith any reasonable comments provided by the Stockholder Representative, but shall have ultimate control over the content and filing of such tax returns. This review right is reasonable and ensures that the selling stockholders — who bear indemnification exposure for pre-closing tax liabilities — are not blindsided by tax return positions taken by Parent that could trigger indemnification claims. The 30-day review window provides adequate time for the Stockholder Representative and its advisors to review the returns and provide substantive comments.

Straddle Period Allocation. Taxes for Straddle Periods are to be allocated between the pre-closing portion and the post-closing portion using the "closing of the books" method as of the end of the closing date. Under this method, the books and records of the Company and its subsidiaries are deemed to close as of the end of the closing date, and taxes attributable to the pre-closing portion of the Straddle Period are determined based on the actual income, deductions, gains, losses, and credits reported in the deemed short taxable year ending on the closing date. The one exception to this methodology applies to property taxes, ad valorem taxes, and similar periodic taxes that are not based on income or receipts, which are allocated on a pro rata per-diem basis.

The closing-of-the-books method is favorable to the Buyer because it assigns to the pre-closing period (and therefore to the selling stockholders' indemnification exposure) only those taxes attributable to actual pre-closing income and activity, rather than allocating taxes on a ratable basis that might assign a disproportionate share of annual tax liability to the post-closing period. This method is the standard approach in negotiated private M&A transactions. I recommend confirming with Pendleton & Associates LLP (Richard Chow) that the straddle-period allocation methodology in the Merger Agreement is consistent with how Pendleton is modeling the purchase-price allocation and the post-closing tax projections, as any inconsistency could create complications in the NWC true-up or the indemnification calculations.

B. Cooperation on Tax Matters

Both parties — Parent and the Stockholder Representative — covenant to cooperate fully with each other in the preparation and filing of tax returns, the conduct of any tax audit, examination, or proceeding, and the resolution of any tax dispute or claim, in each case with respect to Pre-Closing Tax Periods and Straddle Periods. This cooperation obligation includes making available relevant employees, officers, and advisors; providing access to books, records, work papers, and other information; and executing any forms, documents, powers of attorney, or consents reasonably necessary to carry out the foregoing.

In addition, each party covenants to retain (or cause to be retained) all books, records, work papers, and other documents relating to the tax affairs of the Company and its subsidiaries for a period of at least seven (7) years following the closing date, or such longer period as may be required by applicable law. Neither party shall destroy or dispose of any such records during the retention period without providing at least sixty (60) days' prior written notice to the other party and affording the other party the opportunity to take possession of such records.

Commentary. The seven-year retention period is adequate to cover most federal and state statute of limitations periods in the United States. For U.S. federal income tax purposes, the general statute of limitations under Section 6501(a) of the Code is three years from the date the return is filed; the extended period under Section 6501(e) for substantial omissions of gross income is six years; and the statute is unlimited under Section 6501(c) for fraud or failure to file. Seven years from the closing date should comfortably cover the general and extended periods for the final Pre-Closing Tax Period return filed by the Company.

However, for the international jurisdictions in which the Luminex subsidiaries operate, the retention requirements and limitation periods may differ. I recommend that Megan Chu coordinate with local counsel in each jurisdiction — specifically, Breitfeld Hess & Partner AG for Switzerland, Wendt Schäfer Rechtsanwälte for Germany, and Tan Liang & Associates for Singapore — to confirm that the seven-year retention period satisfies local legal requirements. In Switzerland, the general tax assessment limitation period is five years for ordinary taxes and fifteen years in cases of tax evasion. In Germany, the assessment period is four years for general taxes and ten years for tax evasion. In the United Kingdom, HMRC generally has four years for ordinary assessments and up to twenty years for deliberate and concealed understatements. In Singapore, the Inland Revenue Authority of Singapore generally has four years. If any of these jurisdictions requires a longer retention period than seven years, the deal team should flag this and ensure that the Merger Agreement's cooperation and retention covenants are supplemented by appropriate record-keeping protocols at the subsidiary level.

C. Refunds and Overpayments

The Merger Agreement provides that any tax refunds or credits attributable to Pre-Closing Tax Periods shall belong to, and be for the benefit of, the selling stockholders. If Parent or any of its affiliates (including the surviving corporation and its subsidiaries) receives any tax refund or credit attributable to a Pre-Closing Tax Period after the closing date, Parent shall promptly pay over to the Stockholder Representative (for distribution to the selling stockholders pro rata in accordance with their respective ownership percentages) the amount of such refund or credit, net of any reasonable out-of-pocket costs incurred by Parent or its affiliates in obtaining or recovering such refund or credit and net of any taxes imposed on the receipt of such refund or credit.

Commentary. This is a standard provision and is the logical counterpart to the sellers' indemnification obligation for pre-closing taxes — the sellers bear the economic burden of pre-closing tax liabilities through the indemnification provisions, and they receive the economic benefit of pre-closing tax refunds and credits through this provision. The Buyer should be aware that this creates an affirmative obligation to pay over refunds received post-closing, which will require a tracking and compliance mechanism within Parent's post-closing tax function.

I recommend coordinating with Pendleton & Associates LLP (Richard Chow) to ensure that any expected tax refunds attributable to Pre-Closing Tax Periods are properly treated in the closing working capital calculation. To the extent the NWC definition includes or excludes tax receivables (including refund claims), the interplay between the refund allocation provision and the NWC calculation needs to be carefully managed to avoid double-counting or gaps.

D. Transfer Tax Provisions

The Merger Agreement provides that all transfer, documentary, stamp, recording, sales, use, registration, value-added, and similar taxes and fees imposed in connection with the merger and the transactions contemplated by the Merger Agreement (collectively, "Transfer Taxes") shall be borne equally — fifty percent (50%) by the selling stockholders (deducted from the aggregate merger consideration payable to the stockholders) and fifty percent (50%) by the Buyer.

Commentary. The 50/50 split of Transfer Taxes is a common allocation in negotiated transactions and reflects a balanced approach. Each party bears an equal share of the transaction costs associated with the change in ownership. The practical application of this provision requires identification and quantification of applicable Transfer Taxes in each relevant jurisdiction. Based on my preliminary analysis, the following jurisdictions may impose Transfer Taxes in connection with the merger:

• Delaware: Delaware does not impose a state-level transfer tax on stock mergers. The merger involves the cancellation of Company shares in exchange for cash consideration, which is not subject to Delaware real estate transfer tax or other documentary stamp taxes.

• Virginia: If the Company or any of its subsidiaries holds real property interests in Virginia, recordation taxes may be applicable. This should be confirmed through the asset review.

• Switzerland: The Swiss federal stamp duty (Stempelabgabe) may be applicable to the merger at a rate of 0.15% on securities transactions involving Swiss-situated securities. However, an exemption may apply to the extent the merger is structured as a direct acquisition of shares of a U.S. holding company (Luminex Holdings) rather than a direct acquisition of shares of Luminex AG. The applicability of the Swiss stamp duty exemption should be confirmed with Breitfeld Hess & Partner AG.

• Germany: Real estate transfer tax (Grunderwerbsteuer) is generally not triggered by a change of ownership at the U.S. holding company level, provided that Luminex Systems GmbH does not hold significant German real property. Since the merger is effected at the Luminex Holdings level (U.S.), and not at the GmbH level, German real estate transfer tax should not apply. Confirm with Wendt Schäfer Rechtsanwälte.

• Singapore: Singapore stamp duty generally applies to the transfer of shares in a Singapore company, but an exemption is available for transfers of shares in a company that does not hold Singapore immovable property (or holds immovable property that is below certain thresholds). Since Luminex Systems Pte. Ltd. is an operating subsidiary that is unlikely to hold significant immovable property in Singapore, the stamp duty exemption should apply. Confirm with Tan Liang & Associates.

I recommend that Megan Chu coordinate with local counsel in each jurisdiction to confirm the applicability (or inapplicability) of Transfer Taxes, quantify the expected amounts, and establish the appropriate payment and filing procedures. The results of this analysis should be communicated to the deal team and to the Stockholder Representative in advance of closing so that the 50/50 allocation can be properly implemented in the closing funds flow.

VI. Tax Indemnification

A. Sellers' Tax Indemnification Obligations

Article VIII of the Merger Agreement sets forth the indemnification provisions governing the parties' respective obligations for losses arising from breaches of representations, warranties, and covenants, as well as certain specified matters. The tax indemnification provisions are integrated into the general indemnification framework but include certain tax-specific features.

The selling stockholders — consisting of Ridgeline Growth Equity Fund II LP (approximately 52% ownership, expected gross proceeds of approximately $1,456,000,000), Meridian Venture Partners IV LP (approximately 20% ownership, expected gross proceeds of approximately $560,000,000), and management and employee holders (collectively approximately 28% ownership, with aggregate consideration of approximately $784,000,000, of which approximately $378,980,000 represents cash-out proceeds and approximately $405,020,000 represents rollover equity) — jointly and severally indemnify and hold harmless the Buyer Indemnitees (Parent, the surviving corporation, their respective subsidiaries, and their respective officers, directors, employees, agents, and representatives) from and against all losses arising from or relating to:

(i) Pre-Closing Taxes. All taxes of the Company and its subsidiaries for any Pre-Closing Tax Period, and the pre-closing portion of any Straddle Period (as determined in accordance with the closing-of-the-books methodology described in Section V.A above), including without limitation any taxes arising from or related to the 2021 reorganization and inversion that created the Luminex Holdings U.S. parent structure.

(ii) Tax Representation Breaches. All taxes resulting from, or arising out of, any breach or inaccuracy of any of the Target's tax representations and warranties set forth in Section 3.XX of the Merger Agreement.

(iii) Consolidated Group Liability. All taxes of any person (other than the Company or its subsidiaries) for which the Company or any of its subsidiaries is or becomes liable by reason of having been a member of a consolidated, combined, unitary, or affiliated group (within the meaning of Treasury Regulations Section 1.1502-6 or any analogous provision of state, local, or foreign tax law) at any time on or before the closing date, including any liability arising under transferee liability principles or by operation of law.

(iv) Pre-Closing Tax Covenant Breaches. All taxes resulting from, or arising out of, any breach of any pre-closing tax covenant set forth in Section 5.XX of the Merger Agreement.

(v) Transfer Taxes. Any Transfer Taxes allocable to the selling stockholders pursuant to the 50/50 allocation described in Section V.D above.

The breadth of these indemnification obligations is appropriate for a transaction of this size and reflects the Buyer's interest in ensuring that it is fully protected against pre-closing tax liabilities that may surface after the closing date. The inclusion of specific indemnification for taxes arising from the 2021 reorganization and inversion is noteworthy and reflects the Buyer's concern — which I share — that the inversion may have created latent tax exposure that has not yet been fully assessed or resolved. This point is discussed further in Section XI.B below.

B. Indemnification Cap and Basket

The tax indemnification obligations are subject to the same cap and basket structure that applies to the general indemnification provisions under Article VIII of the Merger Agreement:

• Cap. The aggregate liability of the selling stockholders for all indemnification claims (including tax indemnification claims) shall not exceed fifteen percent (15%) of the aggregate deal value, which equals $420,000,000 (15% × $2,800,000,000). This cap is also mirrored by the representations and warranties insurance policy issued by Grandview Specialty Insurance Company (Policy No. GSI-RWI-2025-04821), which has a policy limit of $420,000,000.

• Basket / Retention. Indemnification claims (including tax indemnification claims) are subject to a retention (deductible) of $14,000,000, which represents 0.5% of the $2,800,000,000 aggregate deal value. The retention is split equally between the sellers and the Buyer, with the first $7,000,000 of losses borne by the Buyer (the "Buyer Retention") and the next $7,000,000 of losses borne by the sellers (the "Seller Retention"). Losses in excess of the aggregate $14,000,000 retention are indemnifiable by the sellers (subject to the cap) and covered by the R&W insurance policy (subject to the policy terms).

R&W Insurance Coverage for Tax Claims. The representations and warranties insurance policy from Grandview Specialty Insurance Company is a critical component of the indemnification structure. The policy is intended to serve as the primary source of recovery for representation and warranty breaches, including tax representation breaches, thereby reducing the need for the Buyer to pursue direct claims against the selling stockholders. However, I note that some R&W insurance policies contain exclusions or sub-limits for certain categories of tax matters — for example, exclusions for known tax issues identified during due diligence, exclusions for transfer pricing adjustments, exclusions for taxes arising from Section 338 elections, or sub-limits on coverage for certain categories of international tax exposure.

I strongly recommend that the deal team coordinate with Philip Navarro at Ashbury Risk Advisors LLC to review the Grandview policy in detail and confirm the following: (a) that the policy covers breaches of all tax representations and warranties set forth in Section 3.XX of the Merger Agreement; (b) that the policy does not contain any tax-specific exclusions that would limit or deny coverage for the types of tax claims most likely to arise in this transaction (particularly transfer pricing adjustments, Swiss withholding tax claims, and claims related to the 2021 reorganization); (c) that the policy's coverage period extends through the tax representation survival period (60 days after expiration of the applicable statute of limitations); and (d) that the policy's "Discovery period" for claims is sufficiently long to capture late-arising tax claims that may not surface until years after the closing date. This is Priority Item No. 1 in Section XI below.

Escrow. The Merger Agreement provides for an escrow of $140,000,000, representing 5% of the aggregate deal value, to be held by Continental Fiduciary Trust Company (Escrow Account Ref. CFT-ESC-2025-7894) for a period of eighteen (18) months following the closing date. The escrow serves as a fund against which indemnification claims — including tax indemnification claims — may be satisfied. At the expiration of the 18-month escrow period, any remaining escrow funds (after deduction for pending or resolved indemnification claims) will be released to the selling stockholders.

The interaction between the escrow release date and the tax representation survival period is discussed in Section VI.C below and is flagged as Priority Item No. 4 in Section XI.

C. Survival Period for Tax Representations

The survival provisions set forth in Article VIII of the Merger Agreement establish the following periods during which indemnification claims may be brought based on breaches of representations and warranties:

The extended survival period for tax representations is appropriate, market-standard, and, in my view, essential for the protection of the Buyer. Tax liabilities are inherently long-tailed — the statute of limitations for assessment of federal income taxes does not begin to run until the applicable tax return is filed, and the period can extend well beyond the general three-year limitation in cases of substantial understatements, fraud, or failure to file. The following chart illustrates the applicable limitation periods by jurisdiction:

The "60 days after expiration" tail provides a reasonable window to identify and assert indemnification claims after the applicable limitation period has closed. This tail is necessary because a taxing authority may issue an assessment or deficiency notice near the end of the limitation period, and the Buyer needs time to evaluate the assessment and formulate an indemnification claim.

Practical Implications. The extended survival period for tax representations creates an important asymmetry with the other temporal provisions of the Merger Agreement. Specifically:

(a) The escrow ($140,000,000 at Continental Fiduciary Trust Company) releases 18 months after closing. For tax claims that do not arise or are not identified until after the escrow release date, the escrow will no longer be available as a source of recovery. In such cases, the Buyer would need to pursue recovery either (i) directly against the selling stockholders (subject to collection risk, particularly with respect to management/employee holders who may have distributed their merger proceeds), or (ii) through the R&W insurance policy from Grandview Specialty Insurance Company (subject to the policy's terms, conditions, and coverage period).

(b) The R&W insurance policy has its own coverage period, which may or may not align with the extended tax representation survival period. If the R&W policy's coverage period (or "Discovery period" for claims) expires before the tax representation survival period, there could be a gap in coverage for late-arising tax claims. This is a significant risk that must be evaluated and addressed. See Priority Item No. 1 in Section XI below.

(c) For institutional selling stockholders (Ridgeline Growth Equity Fund II LP and Meridian Venture Partners IV LP), the risk of inability to satisfy post-escrow-release indemnification claims is mitigated by the financial resources of these institutional investors. However, for management and employee holders, the collection risk may be more significant, particularly if those individuals have already received and spent or invested their cash-out proceeds by the time a late-arising tax claim is asserted. The Buyer should be aware of this risk.

I have flagged the escrow-release / tax-survival mismatch as Priority Item No. 4 in Section XI below, and I recommend that the deal team discuss this asymmetry with Ardent Capital's deal principals (Ted Hargrove / Victoria Langford) and with Whitfield Partners (Christopher Brennan) to ensure they are aware of the tail risk.

VII. Section 338(h)(10) Election Mechanics

A. Overview of the Provision

The Merger Agreement contains a provision in Article V granting Parent the right, but not the obligation, to make a joint election under Section 338(h)(10) of the Internal Revenue Code of 1986, as amended, with respect to the acquisition of Luminex Systems Holdings Inc. The election may also be made with respect to any eligible subsidiary of the Company that is treated as a "target affiliate" under Section 338(h)(10) and the Treasury Regulations thereunder, if applicable.

If made, the Section 338(h)(10) election would treat the reverse triangular merger — which is otherwise treated as a stock acquisition for U.S. federal income tax purposes — as a deemed asset purchase. The effect of the election is to provide the Buyer with a step-up in the tax basis of the Target's assets to fair market value as of the acquisition date, generating amortizable and depreciable tax basis that can be used to reduce the Buyer's (and the surviving corporation's) post-closing U.S. federal and state income tax liability.

This provision is one of the most significant tax-related provisions in the Merger Agreement from an economic perspective, and it is the provision that requires the most urgent pre-closing and post-closing coordination among the deal team, the Buyer's tax advisor (Pendleton & Associates LLP), and the Stockholder Representative.

B. Mechanics Under the Merger Agreement

The Merger Agreement establishes the following mechanics for the Section 338(h)(10) election:

Election Notice. Parent must notify the Stockholder Representative in writing of its intent to make the Section 338(h)(10) election no later than sixty (60) calendar days after the closing date. If Parent does not deliver such notice within the 60-day period, the right to make the election is deemed waived and the merger will be treated as a stock acquisition for U.S. federal income tax purposes without any step-up in asset basis.

Cooperation. If Parent delivers the election notice, the selling stockholders and the Company (through the Stockholder Representative) are required to cooperate in good faith in executing IRS Form 8023 (Elections Under Section 338 for Corporations Making Qualified Stock Purchases) and any analogous state or local forms, and to take all actions reasonably necessary to make the election valid and effective. This cooperation obligation is a critical covenant — the Section 338(h)(10) election requires the joint consent of both the acquiring corporation and the selling consolidated group (or selling shareholders, in the case of an S corporation target). The Merger Agreement's mandatory cooperation provision ensures that the selling stockholders cannot frustrate the Buyer's exercise of the election right.

Purchase-Price Allocation. The aggregate deemed sale price (ADSP) for purposes of the deemed asset sale is to be allocated among the assets of the Target and its subsidiaries in accordance with Section 1060 of the Code and the Treasury Regulations thereunder (the "residual method"). The allocation is to be set forth in an allocation schedule prepared by Pendleton & Associates LLP (Richard Chow) and delivered to the Stockholder Representative within one hundred twenty (120) calendar days after the closing date.

Stockholder Representative Review. The Stockholder Representative has thirty (30) calendar days after receipt of the allocation schedule to review and comment on the proposed allocation. If the Stockholder Representative objects to the allocation, the dispute is to be resolved by Pendleton & Associates LLP, acting in the capacity of an independent accounting firm. The decision of Pendleton & Associates LLP is final and binding on the parties.

Commentary on Dispute Resolution Mechanism. I note a potential conflict-of-interest concern with the designation of Pendleton & Associates LLP as the independent accounting firm for resolving disputes over the purchase-price allocation. Pendleton is the Buyer's tax and accounting advisor and has been engaged by Ardent Capital throughout the transaction. Designating Pendleton as the "independent" dispute resolver creates an inherent tension — while Pendleton may be able to exercise independent professional judgment, its ongoing advisory relationship with the Buyer may create at least the appearance of bias. This same issue applies to the post-closing NWC true-up, for which Pendleton also serves as the designated independent accounting firm for disputes.

I understand that Caldwell, Raines & Sheppard LLP (Patricia Okonkwo) negotiated this point on behalf of the selling stockholders and ultimately accepted the designation of Pendleton, presumably after weighing the cost and delay of engaging an additional firm against the risk of perceived bias. Nevertheless, I flag this point internally for the deal team's awareness. If a dispute does arise over the allocation, the Stockholder Representative may challenge the independence of Pendleton's determination, and we should be prepared to address that challenge.

C. Tax Impact Analysis

I have prepared a separate Tax Structure Memorandum — Section 338(h)(10) Election Analysis that provides a detailed analysis of the tax costs and benefits of the election. That memorandum should be read in conjunction with this commentary. For purposes of this memorandum, the key metrics from the analysis are summarized below:

The reverse triangular merger structure — in which Merger Sub merges with and into Luminex Holdings, with Luminex Holdings surviving as a wholly owned subsidiary of Parent — is treated as a stock acquisition for U.S. federal income tax purposes in the absence of a Section 338(h)(10) election. This is because the merger constitutes a "qualified stock purchase" under Section 338(d)(3) of the Code: Parent (through Merger Sub) acquires 100% of the outstanding stock of the Company, which exceeds the 80% threshold for both vote and value required by the statute. The election converts this stock acquisition into a deemed asset purchase, generating the basis step-up described above.

The legal requirements for a valid Section 338(h)(10) election are as follows:

(i) The target must be either (a) a member of a selling consolidated group (i.e., the target must be the common parent or a subsidiary member of an affiliated group filing a consolidated U.S. federal income tax return), or (b) an S corporation. Here, Luminex Systems Holdings Inc. is the common parent of its own consolidated group for U.S. federal income tax purposes, which includes Luminex Systems Inc. as a domestic subsidiary member. Accordingly, the first requirement is satisfied.

(ii) The acquiring corporation must make a "qualified stock purchase" within the meaning of Section 338(d)(3) — i.e., the acquiring corporation must acquire, by purchase (within the meaning of Section 338(h)(3)), at least 80% of the total voting power and at least 80% of the total value of the target's stock within a 12-month acquisition period. Here, Parent is acquiring 100% of the Company's outstanding stock in a single transaction, and the acquisition qualifies as a purchase (not a tax-free reorganization). Accordingly, the second requirement is satisfied.

(iii) The election must be jointly made by the acquiring corporation and the selling consolidated group (or, in the case of an S corporation target, by the acquiring corporation and the S corporation shareholders). Under the Merger Agreement, the mandatory cooperation provision ensures that the selling stockholders will cooperate in making the joint election if Parent exercises its election right.

Economic Allocation of the Section 338(h)(10) Tax Cost. The selling stockholders bear the economic cost of the Section 338(h)(10) election. When the election is made, the old target is treated as having sold all of its assets in a single transaction at fair market value on the acquisition date, recognizing gain (or loss) on the deemed asset sale. This gain is reported on the final consolidated return of the sel

PRIVILEGED AND CONFIDENTIAL — ATTORNEY WORK PRODUCT
CALDERWOOD & HARKNESS LLP
March 26, 2025
Tax Provisions Review — Merger Agreement
(Internal Mark-Up Commentary)
Re: Internal Commentary on Tax Provisions of the Agreement and Plan of Merger dated March 24, 2025 among Ardent Apex Holdings Inc. ("Parent"), Ardent Apex Merger Sub Inc. ("Merger Sub"), and Luminex Systems Holdings Inc. (the "Company" or the "Target")
This memorandum constitutes attorney work product prepared in anticipation of litigation and in connection with the rendering of legal advice. It is protected by the attorney-client privilege and the work product doctrine. This memorandum is intended solely for internal use by the attorneys and professionals identified above and should not be disclosed to any person outside of Calderwood & Harkness LLP without the express written authorization of the author. Unauthorized disclosure may result in waiver of privilege.
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I. Executive Summary and Purpose
This memorandum provides my internal commentary and mark-up notes on the tax-related provisions of the executed Agreement and Plan of Merger dated March 24, 2025 (the "Merger Agreement"). The Merger Agreement was signed two days ago, and this commentary is intended to serve as a comprehensive reference for the Calderwood & Harkness deal team as we proceed toward closing and address post-signing, pre-closing tax matters. This memorandum does not constitute a comprehensive tax opinion and should not be relied upon as such outside the context of this engagement. Rather, it is designed to identify the key tax provisions, assess their adequacy and market-conformity, flag areas requiring further attention, and assign responsibility for outstanding action items.
Transaction Overview. The transaction involves a reverse triangular merger under the Delaware General Corporation Law. Ardent Apex Merger Sub Inc., a newly formed Delaware corporation and wholly owned subsidiary of Ardent Apex Holdings Inc., will merge with and into Luminex Systems Holdings Inc., with the Company surviving the merger as a wholly owned subsidiary of Parent. The aggregate equity value of the transaction is $2,800,000,000, calculated at $20.00 per share on approximately 140,000,000 fully diluted shares of the Company's common stock. Ardent Apex Holdings Inc. is the acquisition vehicle formed by Ardent Capital Partners III LP ("Ardent CP III"), the private equity sponsor. The transaction is expected to close in the July–August 2025 timeframe, subject to satisfaction of customary closing conditions, including receipt of HSR Act clearance and any required foreign antitrust approvals.
Scope of This Memorandum. This memorandum addresses the following categories of tax provisions within the Merger Agreement:
(A) Tax Representations and Warranties of the Target (Article III);
(B) Tax Representations and Warranties of Parent and Merger Sub (Article IV);
(C) Tax Covenants — both pre-closing and post-closing (Article V);
(D) Tax Indemnification provisions (Article VIII);
(E) Survival periods applicable to tax representations;
(F) Section 338(h)(10) election mechanics;
(G) Withholding provisions;
(H) Transfer tax allocation;
(I) Interaction with other Merger Agreement provisions (working capital, MAE definition, interim operating covenants); and
(J) Coordination with external advisors, including Pendleton & Associates LLP (Richard Chow, buyer's tax and accounting advisor), Hargrove Thornton LLP (Margaret Dawson, Target's auditor), Breitfeld Hess & Partner AG (Dr. Lukas Breitfeld, Swiss counsel), and other local counsel.
Overall Assessment. The negotiated tax provisions are market-standard for a transaction of this size and complexity. They reflect a balanced allocation of risk between Buyer and the selling stockholders, with several provisions that are meaningfully Buyer-favorable — most notably the Section 338(h)(10) election right and the extended survival period for tax representations. I have flagged several points for post-closing attention and one area — the Section 338(h)(10) election — that requires additional coordination and analysis before the closing date to ensure the deal team is prepared to act promptly within the 60-day post-closing election window. The priority items are summarized in Section XI below and assigned to the appropriate team members.
II. Tax Representations and Warranties of the Company (Article III / Section 3.XX of the Merger Agreement)
A. Scope of Target's Tax Representations
The Target's tax representations and warranties are set forth in Section 3.XX of the Merger Agreement and are among the more detailed and comprehensive provisions in the agreement, reflecting the multi-jurisdictional footprint of the Luminex group and the significance of tax exposure in a $2.8 billion enterprise SaaS acquisition. The representations cover Luminex Systems Holdings Inc. and all of its direct and indirect subsidiaries, which constitute the following entities:
The tax representations apply broadly to cover all U.S. federal, state, and local taxes of the domestic entities (Luminex Holdings and Luminex Systems Inc.) as well as all non-U.S. taxes payable by, or with respect to, each foreign subsidiary in its respective jurisdiction of organization and any other jurisdiction in which it has a taxable presence. This multi-jurisdictional scope is appropriate given the operational footprint of the Luminex group, which derives revenues and maintains employees, offices, and intellectual property in each of these jurisdictions.
The key representations made by the Target with respect to tax matters include the following:
(i) Timely Filing of All Tax Returns. The Company and each of its subsidiaries have timely filed (or have caused to be timely filed), taking into account any applicable extensions, all income tax returns, franchise tax returns, value-added tax returns, payroll and employment tax returns, and all other material tax returns required to be filed with any taxing authority in any jurisdiction.
(ii) Timely Payment of All Taxes. The Company and each of its subsidiaries have timely paid (or have caused to be timely paid) all taxes shown as due and owing on such tax returns, and all other material taxes due and owing to any taxing authority, whether or not shown on any tax return.
(iii) No Pending or Threatened Audits, Assessments, or Proceedings. There are no pending or, to the knowledge of the Company, threatened audits, examinations, assessments, deficiency notices, proposed adjustments, or other proceedings by any taxing authority with respect to any taxes or tax returns of the Company or any of its subsidiaries.
(iv) No Tax Liens. There are no liens for taxes upon the assets of the Company or any of its subsidiaries, other than liens for taxes not yet due and payable or being contested in good faith by appropriate proceedings and for which adequate reserves have been established in accordance with GAAP (collectively, "Permitted Liens").
(v) No Extensions or Waivers of Statute of Limitations. Neither the Company nor any of its subsidiaries has granted or been requested to grant any waiver or extension of the statute of limitations applicable to the assessment or collection of any tax, which waiver or extension remains in effect as of the date of the Merger Agreement.
(vi) No Listed or Reportable Transactions. Neither the Company nor any of its subsidiaries has participated in any "listed transaction" within the meaning of Treasury Regulations Section 1.6011-4(b)(2) or any "reportable transaction" within the meaning of Treasury Regulations Section 1.6011-4(b)(1) for which a disclosure statement was required to be filed under Section 6011 of the Internal Revenue Code.
(vii) Compliance with Transfer Pricing Rules. All intercompany transactions between and among the Company and its subsidiaries have been conducted on arm's-length terms in compliance with Section 482 of the Code and the Treasury Regulations thereunder, and in compliance with the OECD Transfer Pricing Guidelines for Multinational Enterprises and Tax Administrations, as applicable in each relevant jurisdiction.
(viii) No Tax Sharing, Allocation, or Indemnity Agreements. Neither the Company nor any of its subsidiaries is a party to, is bound by, or has any obligation under any tax sharing agreement, tax allocation agreement, tax indemnity agreement, or similar arrangement with any person (other than agreements entered into in the ordinary course of business the primary subject matter of which is not taxes, such as ordinary-course commercial agreements with customers or vendors that contain customary tax allocation or gross-up provisions).
(ix) Eligibility for Treaty Benefits. The Company and its subsidiaries are, and have at all relevant times been, eligible to claim the benefits of applicable income tax treaties, including, without limitation, the Convention between the United States of America and the Swiss Confederation for the Avoidance of Double Taxation with Respect to Taxes on Income (the "U.S.-Switzerland Tax Treaty"), which is relevant to the reduction of Swiss withholding tax on dividends and other payments from Luminex Systems AG to its U.S. parent.
(x) FIRPTA Representation. The Company is not, and has not been at any time during the applicable period specified in Section 897(c)(1)(A)(ii) of the Code, a "United States real property holding corporation" within the meaning of Section 897(c)(2) of the Code.
These representations are each subject to the qualification and exception mechanisms set forth in the Merger Agreement, including the disclosure schedules and the applicable materiality and knowledge qualifiers, which are discussed further in Section II.B below.
B. Commentary on Specific Representations
Having reviewed each of the tax representations in detail, I offer the following commentary on the provisions that I believe warrant particular attention from the deal team.
Transfer Pricing (Section 482 / OECD Guidelines). The transfer pricing representation is, in my assessment, the single most consequential tax representation in the Merger Agreement. This assessment is driven by the existing intercompany intellectual property licensing arrangement between Luminex Systems AG (the Swiss subsidiary) and Luminex Systems Inc. (the U.S. operating subsidiary). Under the current structure, Luminex AG licenses its proprietary enterprise SaaS platform technology and related intellectual property to Luminex Systems Inc. in exchange for a royalty payment calculated at 4.5% of Luminex Systems Inc.'s U.S. net revenues. Based on Luminex Systems Inc.'s 2024 revenue of $194,800,000, the implied annual royalty payment is approximately $8,766,000. This royalty payment has the effect of shifting a portion of the Luminex group's taxable income from the United States (where the federal corporate tax rate is 21%, plus applicable state income taxes) to Switzerland (where the effective cantonal/federal tax rate applicable to Luminex AG is understood to be approximately 11.5% under the Glenrock Assurance cantonal regime, though this should be confirmed with Breitfeld Hess & Partner).
The significance of this representation is heightened by the proposed post-closing restructuring of the intercompany royalty rate from 4.5% to 6.0% of U.S. net revenues, as recommended by Pendleton & Associates LLP based on its preliminary benchmark study of comparable uncontrolled transactions. The increase from 4.5% to 6.0% represents a 33% increase in the royalty rate and would result in a meaningful additional shift of income from the United States to Switzerland. For this restructuring to withstand scrutiny from the IRS and applicable foreign tax authorities, the historical compliance of the existing 4.5% rate must be defensible — an IRS challenge to the historical rate could not only result in additional U.S. tax liability for pre-closing periods (which would be indemnifiable by the sellers) but could also undermine the credibility of the proposed 6.0% rate for post-closing periods.
I recommend that the deal team confirm that the transfer pricing representation in the Merger Agreement covers not merely the filing of required transfer pricing documentation but also the substantive arm's-length nature of the existing 4.5% royalty rate for all open tax years. If the representation is limited to procedural compliance (i.e., the existence of contemporaneous documentation), it may not cover a substantive adjustment by the IRS under Section 482. The disclosure schedules should be reviewed for any exceptions to this representation. Additionally, I recommend coordinating with Pendleton & Associates LLP (Richard Chow) to confirm that the benchmark study addresses both the historical reasonableness of the 4.5% rate and the prospective supportability of the 6.0% rate, as these analyses are interrelated.
Swiss Withholding Tax Representation. The Company represents that Luminex Systems AG has properly withheld and remitted the Swiss anticipatory tax (Verrechnungssteuer) at the 35% statutory rate on all applicable distributions, and that all applicable refund claims have been properly filed with the Swiss Federal Tax Administration. This representation is important because the Swiss anticipatory tax is a significant cash flow item for the Luminex group — on a gross distribution from Luminex AG to its U.S. parent, 35% must be withheld at source, with the U.S. parent entitled to claim a refund of the excess over the 5% treaty rate (i.e., a refund of 30% of the distribution amount) under the U.S.-Switzerland Tax Treaty.
During due diligence, we coordinated with Breitfeld Hess & Partner AG (Dr. Lukas Breitfeld) on Swiss tax compliance verification. Dr. Breitfeld's team reviewed Luminex AG's withholding tax filings and refund claims for the period from 2021 (the year of the reorganization) through 2024. I understand that no material exceptions were identified, but the final Swiss tax due diligence report should be reviewed by the deal team when received. Any open refund claims should be identified and quantified, as these may bear on the working capital calculation or the refund allocation provision discussed in Section V.C below.
No Tax Sharing Agreements. The representation that neither the Company nor any of its subsidiaries is party to any tax sharing, allocation, or indemnity agreement (other than ordinary-course commercial arrangements) is relevant because of the 2021 reorganization and inversion that created the current Luminex Holdings U.S. parent structure. Luminex Holdings was incorporated on June 14, 2021, as a Delaware corporation, and the reorganization involved a 1:1 share exchange through which Luminex Holdings became the U.S. parent of the former Swiss parent, Luminex Systems AG. In connection with that reorganization, intercompany agreements may have been entered into that could constitute tax sharing or allocation arrangements — for example, an agreement governing the allocation of U.S. and Swiss tax obligations between Luminex Holdings and Luminex AG, or an agreement addressing the treatment of pre-reorganization tax attributes. The representation confirms that no such agreements exist outside the ordinary course, and the disclosure schedules should be reviewed to confirm no exceptions have been scheduled.
Additionally, for the period since the 2021 reorganization, Luminex Holdings has been the common parent of a U.S. consolidated group that includes Luminex Systems Inc. as a member. The filing of a consolidated U.S. federal income tax return implies the existence of at least an informal tax allocation arrangement between the consolidated group members. The representation should be read as excluding the ordinary consolidated return filing arrangement, but this should be confirmed.
FIRPTA Certificate. The Target's representation that it is not a "United States real property holding corporation" within the meaning of Section 897(c)(2) of the Code is consistent with the FIRPTA certificate that will be delivered at closing pursuant to Treasury Regulations Section 1.1445-2(c)(3). This certificate, once delivered, will relieve the Buyer and the paying agent of the obligation to withhold under Section 1445 of the Code on payments to non-U.S. stockholders. The representation in the Merger Agreement provides contractual support for the FIRPTA certificate and gives rise to an indemnification remedy if the representation proves incorrect.
I note that the FIRPTA analysis depends on the composition of the Company's assets. Because the Company is an enterprise SaaS business, its primary assets are intellectual property, customer relationships, and cash/receivables — none of which constitutes "United States real property interests" under Section 897. The Company does not own any significant real property in the United States. Accordingly, the representation appears well-founded. The separate FIRPTA / NRA Withholding Analysis Memorandum addresses this topic in greater detail and should be reviewed by the deal team in connection with the closing deliverables checklist.
Materiality Qualifiers. Several of the tax representations are qualified by "material" or "Material Adverse Effect" standards. For example, the representation regarding timely filing of tax returns is qualified by reference to "all material Tax Returns," and the representation regarding payment of taxes refers to "all material Taxes." The representation regarding no pending or threatened tax proceedings is qualified by "to the knowledge of the Company," which is defined in the Merger Agreement by reference to the actual knowledge of specified individuals after reasonable inquiry.
These qualifiers are typical in negotiated merger agreements and generally are not cause for concern. However, I note that the Material Adverse Effect definition in the Merger Agreement (Section 1.XX) includes carve-outs for (a) general economic conditions, (b) industry-wide conditions, (c) changes in law (including changes in tax law), (d) pandemic-related effects, and (e) changes in GAAP — in each case, except to the extent such matters disproportionately affect the Target relative to similarly situated companies in the enterprise software industry. The practical effect of these carve-outs is to limit the scope of tax representation breaches that could support an indemnification claim predicated on a Material Adverse Effect. A tax deficiency arising from a general change in tax law (for example, a retroactive increase in the corporate tax rate) would not constitute a breach of the tax representations unless the Company were disproportionately affected. This is a reasonable allocation of risk, but the Buyer should be aware that the MAE carve-outs effectively narrow the universe of indemnifiable tax claims when those claims are tied to representations qualified by an MAE standard.
C. Adequacy Assessment
Overall, the Target's tax representations are comprehensive and consistent with market practice for a $2.8 billion enterprise SaaS acquisition involving multi-jurisdictional operations. The representations cover the full range of federal, state, local, and international tax matters that one would expect to see in a transaction of this nature, and the level of specificity — particularly with respect to transfer pricing, Swiss withholding tax, FIRPTA status, and the absence of listed or reportable transactions — reflects the sophistication of both the transaction and the advisors involved.
One area where additional specificity might have been desirable is with respect to the Company's tax attributes — specifically, the existence and amount of any net operating loss carryforwards, tax credit carryforwards, or other tax attributes that could be affected by the change in ownership under Section 382 or Section 383 of the Code. The Merger Agreement does not include a specific representation regarding the Company's tax attributes. While this is not unusual in a fully taxable acquisition (where the Buyer is purchasing 100% of the stock and the value of pre-existing tax attributes is effectively reflected in the purchase price), it would be useful to confirm through the disclosure schedule review whether the Company has any material NOL or credit carryforwards, and whether any prior ownership changes have occurred that would limit the utilization of such attributes under Section 382. This is particularly relevant in light of the 2021 reorganization, which may have constituted an "ownership change" for Section 382 purposes depending on the composition of the Company's stockholders before and after the reorganization.
I recommend that Ryan Kowalski coordinate the review of the disclosure schedules delivered by Caldwell, Raines & Sheppard LLP (Patricia Okonkwo / Daniel Feinberg) on behalf of the Target, with particular attention to any scheduled exceptions to the tax representations. Any exceptions should be flagged for my review and for discussion with the deal team.
III. Tax Representations and Warranties of Parent and Merger Sub (Article IV / Section 4.XX)
Parent (Ardent Apex Holdings Inc., EIN: 93-2178435) and Merger Sub (Ardent Apex Merger Sub Inc., EIN: 93-2178502) make limited tax representations in Article IV of the Merger Agreement. These representations are confined to the following:
(i) Each of Parent and Merger Sub is a newly formed entity with no prior tax history, no tax liabilities, and no tax obligations other than those arising in connection with its formation and the transactions contemplated by the Merger Agreement.
(ii) Each of Parent and Merger Sub has obtained or applied for an employer identification number from the Internal Revenue Service.
(iii) Merger Sub has not engaged in any business activity, acquired any assets, or incurred any liabilities other than in connection with its formation and the merger and the other transactions contemplated by the Merger Agreement.
These representations are entirely standard for acquisition-vehicle entities in sponsored transactions. Ardent Apex Holdings Inc. was incorporated in Delaware on March 5, 2025, and Ardent Apex Merger Sub Inc. was incorporated in Delaware on March 7, 2025 — both formed solely for the purpose of consummating this transaction. Neither entity has any operating history, tax filing history, or pre-existing tax exposure. The representations serve primarily to confirm the "clean" status of the acquisition vehicles and to ensure that the Buyer side of the transaction does not introduce any unexpected tax liabilities into the post-closing structure.
There is no substantive tax exposure arising from the Buyer-side representations. No further analysis is required with respect to these provisions.
IV. Pre-Closing Tax Covenants (Article V / Section 5.XX)
A. Ordinary Course Tax Covenants
Article V of the Merger Agreement sets forth the covenants governing the parties' conduct during the period between the signing date (March 24, 2025) and the closing date (estimated July–August 2025). The tax-specific covenants applicable to the Target during this interim period are as follows:
(i) Timely Filing. The Target covenants to timely file, or cause to be timely filed, all tax returns required to be filed by the Company or any of its subsidiaries that are due (taking into account applicable extensions) on or before the closing date. All such tax returns shall be prepared in a manner consistent with past practice, except as otherwise required by applicable law.
(ii) Timely Payment. The Target covenants to timely pay, or cause to be timely paid, all taxes shown as due and owing on such tax returns, and all other taxes due and owing to any taxing authority, whether or not shown on any tax return.
(iii) No Amendment of Tax Returns. The Target shall not amend, or cause to be amended, any previously filed tax return of the Company or any of its subsidiaries without the prior written consent of Parent, which consent shall not be unreasonably withheld, conditioned, or delayed.
(iv) No Tax Elections. The Target shall not make, change, or revoke any tax election (including any election under Section 338, 336, 754, or any analogous provision of state, local, or foreign law) with respect to the Company or any of its subsidiaries without the prior written consent of Parent.
(v) No Tax Settlements. The Target shall not settle or compromise any tax claim, audit, examination, or proceeding in respect of the Company or any of its subsidiaries where the settlement or compromise amount exceeds $2,000,000, without the prior written consent of Parent, which consent shall not be unreasonably withheld, conditioned, or delayed.
(vi) No Closing Agreements. The Target shall not enter into any closing agreement, advance pricing agreement, or similar agreement with any taxing authority with respect to the Company or any of its subsidiaries without the prior written consent of Parent.
(vii) No Surrender of Refund Claims. The Target shall not surrender any right to claim a tax refund, offset, or credit with respect to the Company or any of its subsidiaries without the prior written consent of Parent.
Commentary. These covenants are standard for the pre-closing period in a leveraged buyout or private equity acquisition. The $2,000,000 threshold for tax settlements requiring Parent's consent is appropriately calibrated and aligns with the general interim operating covenant threshold for contract commitments exceeding $2,000,000 set forth elsewhere in Article V of the Merger Agreement. This alignment provides consistency across the interim covenants and reduces the risk of inadvertent breaches.
The prohibition on making, changing, or revoking tax elections is of critical importance in this transaction. As discussed in Section VII below, the Merger Agreement grants Parent the right (but not the obligation) to make a joint election under Section 338(h)(10) of the Code. This is a post-closing election to be made by Buyer/Parent within 60 days after the closing date. The pre-closing covenant ensures that the Target does not take any unilateral action during the interim period that would impair the availability, validity, or economic value of the Section 338(h)(10) election. For example, if the Target were to make an election under Section 338(g) or revoke the consolidated return election, the consequences for the Section 338(h)(10) analysis could be significant.
Additionally, the covenant requiring Parent's consent for amendments to previously filed tax returns is important because an amendment could alter the Company's reported tax positions, create or eliminate potential tax exposures, or affect the working capital calculation. The "not to be unreasonably withheld" standard provides appropriate flexibility for non-controversial amendments (e.g., correction of clerical errors) while preserving the Buyer's right to review any substantive changes to the Company's tax filings.
B. Access and Cooperation
The Target covenants to provide Parent and its advisors — including, specifically, Pendleton & Associates LLP (Richard Chow) — with reasonable access during normal business hours to the tax records, tax returns, and tax work papers of the Company and its subsidiaries during the pre-closing period. This access right is subject to customary limitations, including compliance with applicable law, preservation of attorney-client privilege, and reasonable protections for competitively sensitive information.
In addition, the Target covenants to cooperate with Parent and its advisors in the preparation of any tax-related analysis reasonably required in connection with the transactions contemplated by the Merger Agreement, including the analysis of the potential Section 338(h)(10) election and the preliminary purchase-price allocation. This cooperation covenant is important given the ongoing work being conducted by Pendleton & Associates LLP on the Section 338(h)(10) cost-benefit analysis, which requires detailed asset-level and entity-level information from the Target — including fair market value estimates for intangible assets, fixed assets, inventory, and other balance-sheet items — that may not have been fully available during the pre-signing due diligence process.
I recommend that the deal team promptly submit an information request to the Target (through Caldwell, Raines & Sheppard LLP) for the additional data needed by Pendleton & Associates LLP to finalize the Section 338(h)(10) analysis. The sooner this information is obtained, the sooner the cost-benefit analysis can be completed, and the better positioned we will be to advise Ardent Capital on whether to make the election within the 60-day post-closing window.
C. Notification of Tax Proceedings
The Target covenants to promptly notify Parent in writing of any notice of audit, examination, assessment, proposed adjustment, deficiency notice, or other tax proceeding received by the Company or any of its subsidiaries after the date of the Merger Agreement (March 24, 2025) and before the closing date. This notification covenant is subject to a requirement that the notification be provided within five (5) business days of receipt by the Company of any such notice.
This is a standard and important provision. Any tax proceeding initiated during the pre-closing period could affect the Buyer's assessment of the Company's tax exposure and, depending on the magnitude of the proceeding, could be relevant to the closing conditions or the indemnification provisions. I recommend that the deal team coordinate with the litigation and regulatory due diligence team to ensure that any tax-related proceedings notified under this covenant are also captured in the Litigation & Regulatory Due Diligence Summary Memorandum and are reflected in any updated disclosure schedules delivered at closing.
V. Post-Closing Tax Covenants (Article V / Section 5.XX continued)
A. Tax Return Preparation and Filing
Pre-Closing Tax Periods and Straddle Periods. The Merger Agreement provides that following the closing, Parent shall control the preparation and filing of all tax returns of the surviving corporation (Luminex Systems Holdings Inc.) and its subsidiaries for (a) any taxable period ending on or before the closing date ("Pre-Closing Tax Periods"), and (b) any taxable period beginning before and ending after the closing date ("Straddle Periods"). This allocation of control is standard and appropriate in a 100% acquisition — the Buyer, as the sole owner of the surviving corporation after the closing, is in the best position to control the tax return preparation and filing process.
The Merger Agreement provides that the Target Stockholder Representative (Ridgeline Growth Equity Fund II LP, acting through Jonathan Ashford as the designated Stockholder Representative) shall have the right to review and comment on any tax return for a Pre-Closing Tax Period or a Straddle Period at least thirty (30) days before the due date of such tax return (including applicable extensions). Parent shall consider in good faith any reasonable comments provided by the Stockholder Representative, but shall have ultimate control over the content and filing of such tax returns. This review right is reasonable and ensures that the selling stockholders — who bear indemnification exposure for pre-closing tax liabilities — are not blindsided by tax return positions taken by Parent that could trigger indemnification claims. The 30-day review window provides adequate time for the Stockholder Representative and its advisors to review the returns and provide substantive comments.
Straddle Period Allocation. Taxes for Straddle Periods are to be allocated between the pre-closing portion and the post-closing portion using the "closing of the books" method as of the end of the closing date. Under this method, the books and records of the Company and its subsidiaries are deemed to close as of the end of the closing date, and taxes attributable to the pre-closing portion of the Straddle Period are determined based on the actual income, deductions, gains, losses, and credits reported in the deemed short taxable year ending on the closing date. The one exception to this methodology applies to property taxes, ad valorem taxes, and similar periodic taxes that are not based on income or receipts, which are allocated on a pro rata per-diem basis.
The closing-of-the-books method is favorable to the Buyer because it assigns to the pre-closing period (and therefore to the selling stockholders' indemnification exposure) only those taxes attributable to actual pre-closing income and activity, rather than allocating taxes on a ratable basis that might assign a disproportionate share of annual tax liability to the post-closing period. This method is the standard approach in negotiated private M&A transactions. I recommend confirming with Pendleton & Associates LLP (Richard Chow) that the straddle-period allocation methodology in the Merger Agreement is consistent with how Pendleton is modeling the purchase-price allocation and the post-closing tax projections, as any inconsistency could create complications in the NWC true-up or the indemnification calculations.
B. Cooperation on Tax Matters
Both parties — Parent and the Stockholder Representative — covenant to cooperate fully with each other in the preparation and filing of tax returns, the conduct of any tax audit, examination, or proceeding, and the resolution of any tax dispute or claim, in each case with respect to Pre-Closing Tax Periods and Straddle Periods. This cooperation obligation includes making available relevant employees, officers, and advisors; providing access to books, records, work papers, and other information; and executing any forms, documents, powers of attorney, or consents reasonably necessary to carry out the foregoing.
In addition, each party covenants to retain (or cause to be retained) all books, records, work papers, and other documents relating to the tax affairs of the Company and its subsidiaries for a period of at least seven (7) years following the closing date, or such longer period as may be required by applicable law. Neither party shall destroy or dispose of any such records during the retention period without providing at least sixty (60) days' prior written notice to the other party and affording the other party the opportunity to take possession of such records.
Commentary. The seven-year retention period is adequate to cover most federal and state statute of limitations periods in the United States. For U.S. federal income tax purposes, the general statute of limitations under Section 6501(a) of the Code is three years from the date the return is filed; the extended period under Section 6501(e) for substantial omissions of gross income is six years; and the statute is unlimited under Section 6501(c) for fraud or failure to file. Seven years from the closing date should comfortably cover the general and extended periods for the final Pre-Closing Tax Period return filed by the Company.
However, for the international jurisdictions in which the Luminex subsidiaries operate, the retention requirements and limitation periods may differ. I recommend that Megan Chu coordinate with local counsel in each jurisdiction — specifically, Breitfeld Hess & Partner AG for Switzerland, Wendt Schäfer Rechtsanwälte for Germany, and Tan Liang & Associates for Singapore — to confirm that the seven-year retention period satisfies local legal requirements. In Switzerland, the general tax assessment limitation period is five years for ordinary taxes and fifteen years in cases of tax evasion. In Germany, the assessment period is four years for general taxes and ten years for tax evasion. In the United Kingdom, HMRC generally has four years for ordinary assessments and up to twenty years for deliberate and concealed understatements. In Singapore, the Inland Revenue Authority of Singapore generally has four years. If any of these jurisdictions requires a longer retention period than seven years, the deal team should flag this and ensure that the Merger Agreement's cooperation and retention covenants are supplemented by appropriate record-keeping protocols at the subsidiary level.
C. Refunds and Overpayments
The Merger Agreement provides that any tax refunds or credits attributable to Pre-Closing Tax Periods shall belong to, and be for the benefit of, the selling stockholders. If Parent or any of its affiliates (including the surviving corporation and its subsidiaries) receives any tax refund or credit attributable to a Pre-Closing Tax Period after the closing date, Parent shall promptly pay over to the Stockholder Representative (for distribution to the selling stockholders pro rata in accordance with their respective ownership percentages) the amount of such refund or credit, net of any reasonable out-of-pocket costs incurred by Parent or its affiliates in obtaining or recovering such refund or credit and net of any taxes imposed on the receipt of such refund or credit.
Commentary. This is a standard provision and is the logical counterpart to the sellers' indemnification obligation for pre-closing taxes — the sellers bear the economic burden of pre-closing tax liabilities through the indemnification provisions, and they receive the economic benefit of pre-closing tax refunds and credits through this provision. The Buyer should be aware that this creates an affirmative obligation to pay over refunds received post-closing, which will require a tracking and compliance mechanism within Parent's post-closing tax function.
I recommend coordinating with Pendleton & Associates LLP (Richard Chow) to ensure that any expected tax refunds attributable to Pre-Closing Tax Periods are properly treated in the closing working capital calculation. To the extent the NWC definition includes or excludes tax receivables (including refund claims), the interplay between the refund allocation provision and the NWC calculation needs to be carefully managed to avoid double-counting or gaps.
D. Transfer Tax Provisions
The Merger Agreement provides that all transfer, documentary, stamp, recording, sales, use, registration, value-added, and similar taxes and fees imposed in connection with the merger and the transactions contemplated by the Merger Agreement (collectively, "Transfer Taxes") shall be borne equally — fifty percent (50%) by the selling stockholders (deducted from the aggregate merger consideration payable to the stockholders) and fifty percent (50%) by the Buyer.
Commentary. The 50/50 split of Transfer Taxes is a common allocation in negotiated transactions and reflects a balanced approach. Each party bears an equal share of the transaction costs associated with the change in ownership. The practical application of this provision requires identification and quantification of applicable Transfer Taxes in each relevant jurisdiction. Based on my preliminary analysis, the following jurisdictions may impose Transfer Taxes in connection with the merger:
• Delaware: Delaware does not impose a state-level transfer tax on stock mergers. The merger involves the cancellation of Company shares in exchange for cash consideration, which is not subject to Delaware real estate transfer tax or other documentary stamp taxes.
• Virginia: If the Company or any of its subsidiaries holds real property interests in Virginia, recordation taxes may be applicable. This should be confirmed through the asset review.
• Switzerland: The Swiss federal stamp duty (Stempelabgabe) may be applicable to the merger at a rate of 0.15% on securities transactions involving Swiss-situated securities. However, an exemption may apply to the extent the merger is structured as a direct acquisition of shares of a U.S. holding company (Luminex Holdings) rather than a direct acquisition of shares of Luminex AG. The applicability of the Swiss stamp duty exemption should be confirmed with Breitfeld Hess & Partner AG.
• Germany: Real estate transfer tax (Grunderwerbsteuer) is generally not triggered by a change of ownership at the U.S. holding company level, provided that Luminex Systems GmbH does not hold significant German real property. Since the merger is effected at the Luminex Holdings level (U.S.), and not at the GmbH level, German real estate transfer tax should not apply. Confirm with Wendt Schäfer Rechtsanwälte.
• Singapore: Singapore stamp duty generally applies to the transfer of shares in a Singapore company, but an exemption is available for transfers of shares in a company that does not hold Singapore immovable property (or holds immovable property that is below certain thresholds). Since Luminex Systems Pte. Ltd. is an operating subsidiary that is unlikely to hold significant immovable property in Singapore, the stamp duty exemption should apply. Confirm with Tan Liang & Associates.
I recommend that Megan Chu coordinate with local counsel in each jurisdiction to confirm the applicability (or inapplicability) of Transfer Taxes, quantify the expected amounts, and establish the appropriate payment and filing procedures. The results of this analysis should be communicated to the deal team and to the Stockholder Representative in advance of closing so that the 50/50 allocation can be properly implemented in the closing funds flow.
VI. Tax Indemnification
A. Sellers' Tax Indemnification Obligations
Article VIII of the Merger Agreement sets forth the indemnification provisions governing the parties' respective obligations for losses arising from breaches of representations, warranties, and covenants, as well as certain specified matters. The tax indemnification provisions are integrated into the general indemnification framework but include certain tax-specific features.
The selling stockholders — consisting of Ridgeline Growth Equity Fund II LP (approximately 52% ownership, expected gross proceeds of approximately $1,456,000,000), Meridian Venture Partners IV LP (approximately 20% ownership, expected gross proceeds of approximately $560,000,000), and management and employee holders (collectively approximately 28% ownership, with aggregate consideration of approximately $784,000,000, of which approximately $378,980,000 represents cash-out proceeds and approximately $405,020,000 represents rollover equity) — jointly and severally indemnify and hold harmless the Buyer Indemnitees (Parent, the surviving corporation, their respective subsidiaries, and their respective officers, directors, employees, agents, and representatives) from and against all losses arising from or relating to:
(i) Pre-Closing Taxes. All taxes of the Company and its subsidiaries for any Pre-Closing Tax Period, and the pre-closing portion of any Straddle Period (as determined in accordance with the closing-of-the-books methodology described in Section V.A above), including without limitation any taxes arising from or related to the 2021 reorganization and inversion that created the Luminex Holdings U.S. parent structure.
(ii) Tax Representation Breaches. All taxes resulting from, or arising out of, any breach or inaccuracy of any of the Target's tax representations and warranties set forth in Section 3.XX of the Merger Agreement.
(iii) Consolidated Group Liability. All taxes of any person (other than the Company or its subsidiaries) for which the Company or any of its subsidiaries is or becomes liable by reason of having been a member of a consolidated, combined, unitary, or affiliated group (within the meaning of Treasury Regulations Section 1.1502-6 or any analogous provision of state, local, or foreign tax law) at any time on or before the closing date, including any liability arising under transferee liability principles or by operation of law.
(iv) Pre-Closing Tax Covenant Breaches. All taxes resulting from, or arising out of, any breach of any pre-closing tax covenant set forth in Section 5.XX of the Merger Agreement.
(v) Transfer Taxes. Any Transfer Taxes allocable to the selling stockholders pursuant to the 50/50 allocation described in Section V.D above.
The breadth of these indemnification obligations is appropriate for a transaction of this size and reflects the Buyer's interest in ensuring that it is fully protected against pre-closing tax liabilities that may surface after the closing date. The inclusion of specific indemnification for taxes arising from the 2021 reorganization and inversion is noteworthy and reflects the Buyer's concern — which I share — that the inversion may have created latent tax exposure that has not yet been fully assessed or resolved. This point is discussed further in Section XI.B below.
B. Indemnification Cap and Basket
The tax indemnification obligations are subject to the same cap and basket structure that applies to the general indemnification provisions under Article VIII of the Merger Agreement:
• Cap. The aggregate liability of the selling stockholders for all indemnification claims (including tax indemnification claims) shall not exceed fifteen percent (15%) of the aggregate deal value, which equals $420,000,000 (15% × $2,800,000,000). This cap is also mirrored by the representations and warranties insurance policy issued by Grandview Specialty Insurance Company (Policy No. GSI-RWI-2025-04821), which has a policy limit of $420,000,000.
• Basket / Retention. Indemnification claims (including tax indemnification claims) are subject to a retention (deductible) of $14,000,000, which represents 0.5% of the $2,800,000,000 aggregate deal value. The retention is split equally between the sellers and the Buyer, with the first $7,000,000 of losses borne by the Buyer (the "Buyer Retention") and the next $7,000,000 of losses borne by the sellers (the "Seller Retention"). Losses in excess of the aggregate $14,000,000 retention are indemnifiable by the sellers (subject to the cap) and covered by the R&W insurance policy (subject to the policy terms).
R&W Insurance Coverage for Tax Claims. The representations and warranties insurance policy from Grandview Specialty Insurance Company is a critical component of the indemnification structure. The policy is intended to serve as the primary source of recovery for representation and warranty breaches, including tax representation breaches, thereby reducing the need for the Buyer to pursue direct claims against the selling stockholders. However, I note that some R&W insurance policies contain exclusions or sub-limits for certain categories of tax matters — for example, exclusions for known tax issues identified during due diligence, exclusions for transfer pricing adjustments, exclusions for taxes arising from Section 338 elections, or sub-limits on coverage for certain categories of international tax exposure.
I strongly recommend that the deal team coordinate with Philip Navarro at Ashbury Risk Advisors LLC to review the Grandview policy in detail and confirm the following: (a) that the policy covers breaches of all tax representations and warranties set forth in Section 3.XX of the Merger Agreement; (b) that the policy does not contain any tax-specific exclusions that would limit or deny coverage for the types of tax claims most likely to arise in this transaction (particularly transfer pricing adjustments, Swiss withholding tax claims, and claims related to the 2021 reorganization); (c) that the policy's coverage period extends through the tax representation survival period (60 days after expiration of the applicable statute of limitations); and (d) that the policy's "Discovery period" for claims is sufficiently long to capture late-arising tax claims that may not surface until years after the closing date. This is Priority Item No. 1 in Section XI below.
Escrow. The Merger Agreement provides for an escrow of $140,000,000, representing 5% of the aggregate deal value, to be held by Continental Fiduciary Trust Company (Escrow Account Ref. CFT-ESC-2025-7894) for a period of eighteen (18) months following the closing date. The escrow serves as a fund against which indemnification claims — including tax indemnification claims — may be satisfied. At the expiration of the 18-month escrow period, any remaining escrow funds (after deduction for pending or resolved indemnification claims) will be released to the selling stockholders.
The interaction between the escrow release date and the tax representation survival period is discussed in Section VI.C below and is flagged as Priority Item No. 4 in Section XI.
C. Survival Period for Tax Representations
The survival provisions set forth in Article VIII of the Merger Agreement establish the following periods during which indemnification claims may be brought based on breaches of representations and warranties:
The extended survival period for tax representations is appropriate, market-standard, and, in my view, essential for the protection of the Buyer. Tax liabilities are inherently long-tailed — the statute of limitations for assessment of federal income taxes does not begin to run until the applicable tax return is filed, and the period can extend well beyond the general three-year limitation in cases of substantial understatements, fraud, or failure to file. The following chart illustrates the applicable limitation periods by jurisdiction:
The "60 days after expiration" tail provides a reasonable window to identify and assert indemnification claims after the applicable limitation period has closed. This tail is necessary because a taxing authority may issue an assessment or deficiency notice near the end of the limitation period, and the Buyer needs time to evaluate the assessment and formulate an indemnification claim.
Practical Implications. The extended survival period for tax representations creates an important asymmetry with the other temporal provisions of the Merger Agreement. Specifically:
(a) The escrow ($140,000,000 at Continental Fiduciary Trust Company) releases 18 months after closing. For tax claims that do not arise or are not identified until after the escrow release date, the escrow will no longer be available as a source of recovery. In such cases, the Buyer would need to pursue recovery either (i) directly against the selling stockholders (subject to collection risk, particularly with respect to management/employee holders who may have distributed their merger proceeds), or (ii) through the R&W insurance policy from Grandview Specialty Insurance Company (subject to the policy's terms, conditions, and coverage period).
(b) The R&W insurance policy has its own coverage period, which may or may not align with the extended tax representation survival period. If the R&W policy's coverage period (or "Discovery period" for claims) expires before the tax representation survival period, there could be a gap in coverage for late-arising tax claims. This is a significant risk that must be evaluated and addressed. See Priority Item No. 1 in Section XI below.
(c) For institutional selling stockholders (Ridgeline Growth Equity Fund II LP and Meridian Venture Partners IV LP), the risk of inability to satisfy post-escrow-release indemnification claims is mitigated by the financial resources of these institutional investors. However, for management and employee holders, the collection risk may be more significant, particularly if those individuals have already received and spent or invested their cash-out proceeds by the time a late-arising tax claim is asserted. The Buyer should be aware of this risk.
I have flagged the escrow-release / tax-survival mismatch as Priority Item No. 4 in Section XI below, and I recommend that the deal team discuss this asymmetry with Ardent Capital's deal principals (Ted Hargrove / Victoria Langford) and with Whitfield Partners (Christopher Brennan) to ensure they are aware of the tail risk.
VII. Section 338(h)(10) Election Mechanics
A. Overview of the Provision
The Merger Agreement contains a provision in Article V granting Parent the right, but not the obligation, to make a joint election under Section 338(h)(10) of the Internal Revenue Code of 1986, as amended, with respect to the acquisition of Luminex Systems Holdings Inc. The election may also be made with respect to any eligible subsidiary of the Company that is treated as a "target affiliate" under Section 338(h)(10) and the Treasury Regulations thereunder, if applicable.
If made, the Section 338(h)(10) election would treat the reverse triangular merger — which is otherwise treated as a stock acquisition for U.S. federal income tax purposes — as a deemed asset purchase. The effect of the election is to provide the Buyer with a step-up in the tax basis of the Target's assets to fair market value as of the acquisition date, generating amortizable and depreciable tax basis that can be used to reduce the Buyer's (and the surviving corporation's) post-closing U.S. federal and state income tax liability.
This provision is one of the most significant tax-related provisions in the Merger Agreement from an economic perspective, and it is the provision that requires the most urgent pre-closing and post-closing coordination among the deal team, the Buyer's tax advisor (Pendleton & Associates LLP), and the Stockholder Representative.
B. Mechanics Under the Merger Agreement
The Merger Agreement establishes the following mechanics for the Section 338(h)(10) election:
Election Notice. Parent must notify the Stockholder Representative in writing of its intent to make the Section 338(h)(10) election no later than sixty (60) calendar days after the closing date. If Parent does not deliver such notice within the 60-day period, the right to make the election is deemed waived and the merger will be treated as a stock acquisition for U.S. federal income tax purposes without any step-up in asset basis.
Cooperation. If Parent delivers the election notice, the selling stockholders and the Company (through the Stockholder Representative) are required to cooperate in good faith in executing IRS Form 8023 (Elections Under Section 338 for Corporations Making Qualified Stock Purchases) and any analogous state or local forms, and to take all actions reasonably necessary to make the election valid and effective. This cooperation obligation is a critical covenant — the Section 338(h)(10) election requires the joint consent of both the acquiring corporation and the selling consolidated group (or selling shareholders, in the case of an S corporation target). The Merger Agreement's mandatory cooperation provision ensures that the selling stockholders cannot frustrate the Buyer's exercise of the election right.
Purchase-Price Allocation. The aggregate deemed sale price (ADSP) for purposes of the deemed asset sale is to be allocated among the assets of the Target and its subsidiaries in accordance with Section 1060 of the Code and the Treasury Regulations thereunder (the "residual method"). The allocation is to be set forth in an allocation schedule prepared by Pendleton & Associates LLP (Richard Chow) and delivered to the Stockholder Representative within one hundred twenty (120) calendar days after the closing date.
Stockholder Representative Review. The Stockholder Representative has thirty (30) calendar days after receipt of the allocation schedule to review and comment on the proposed allocation. If the Stockholder Representative objects to the allocation, the dispute is to be resolved by Pendleton & Associates LLP, acting in the capacity of an independent accounting firm. The decision of Pendleton & Associates LLP is final and binding on the parties.
Commentary on Dispute Resolution Mechanism. I note a potential conflict-of-interest concern with the designation of Pendleton & Associates LLP as the independent accounting firm for resolving disputes over the purchase-price allocation. Pendleton is the Buyer's tax and accounting advisor and has been engaged by Ardent Capital throughout the transaction. Designating Pendleton as the "independent" dispute resolver creates an inherent tension — while Pendleton may be able to exercise independent professional judgment, its ongoing advisory relationship with the Buyer may create at least the appearance of bias. This same issue applies to the post-closing NWC true-up, for which Pendleton also serves as the designated independent accounting firm for disputes.
I understand that Caldwell, Raines & Sheppard LLP (Patricia Okonkwo) negotiated this point on behalf of the selling stockholders and ultimately accepted the designation of Pendleton, presumably after weighing the cost and delay of engaging an additional firm against the risk of perceived bias. Nevertheless, I flag this point internally for the deal team's awareness. If a dispute does arise over the allocation, the Stockholder Representative may challenge the independence of Pendleton's determination, and we should be prepared to address that challenge.
C. Tax Impact Analysis
I have prepared a separate Tax Structure Memorandum — Section 338(h)(10) Election Analysis that provides a detailed analysis of the tax costs and benefits of the election. That memorandum should be read in conjunction with this commentary. For purposes of this memorandum, the key metrics from the analysis are summarized below:
The reverse triangular merger structure — in which Merger Sub merges with and into Luminex Holdings, with Luminex Holdings surviving as a wholly owned subsidiary of Parent — is treated as a stock acquisition for U.S. federal income tax purposes in the absence of a Section 338(h)(10) election. This is because the merger constitutes a "qualified stock purchase" under Section 338(d)(3) of the Code: Parent (through Merger Sub) acquires 100% of the outstanding stock of the Company, which exceeds the 80% threshold for both vote and value required by the statute. The election converts this stock acquisition into a deemed asset purchase, generating the basis step-up described above.
The legal requirements for a valid Section 338(h)(10) election are as follows:
(i) The target must be either (a) a member of a selling consolidated group (i.e., the target must be the common parent or a subsidiary member of an affiliated group filing a consolidated U.S. federal income tax return), or (b) an S corporation. Here, Luminex Systems Holdings Inc. is the common parent of its own consolidated group for U.S. federal income tax purposes, which includes Luminex Systems Inc. as a domestic subsidiary member. Accordingly, the first requirement is satisfied.
(ii) The acquiring corporation must make a "qualified stock purchase" within the meaning of Section 338(d)(3) — i.e., the acquiring corporation must acquire, by purchase (within the meaning of Section 338(h)(3)), at least 80% of the total voting power and at least 80% of the total value of the target's stock within a 12-month acquisition period. Here, Parent is acquiring 100% of the Company's outstanding stock in a single transaction, and the acquisition qualifies as a purchase (not a tax-free reorganization). Accordingly, the second requirement is satisfied.
(iii) The election must be jointly made by the acquiring corporation and the selling consolidated group (or, in the case of an S corporation target, by the acquiring corporation and the S corporation shareholders). Under the Merger Agreement, the mandatory cooperation provision ensures that the selling stockholders will cooperate in making the joint election if Parent exercises its election right.
Economic Allocation of the Section 338(h)(10) Tax Cost. The selling stockholders bear the economic cost of the Section 338(h)(10) election. When the election is made, the old target is treated as having sold all of its assets in a single transaction at fair market value on the acquisition date, recognizing gain (or loss) on the deemed asset sale. This gain is reported on the final consolidated return of the sel

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