What is the mandatory tender offer rule in the Philippines?

The mandatory tender offer rule, codified in SRC Rule 19 and the SRC IRR, requires any person who acquires equity securities of a Philippine listed corporation at or above specified ownership thresholds (15 %, 35 % or 50 %) to make a public offer to purchase all remaining shares of the same class at a regulated minimum price. The rule is designed to protect minority shareholders whenever a change in control or significant ownership shift occurs.

How many days do shareholders have to accept a tender offer?

The minimum acceptance period under the SRC IRR is 20 business days from the date the tender offer is first published or sent to shareholders. If the offeror increases the consideration or materially amends the terms, the acceptance period must be extended by at least 10 additional business days. Shareholders may withdraw their acceptance at any time before the offer expires.

What price must the bidder pay in a mandatory tender offer?

The offer price must not be lower than the highest of three benchmarks: (1) the highest price the bidder (or concert parties) paid for shares of the same class in the preceding 12 months; (2) the highest PSE closing price for those shares during the same period; and (3) the fair value determined by an independent financial adviser, where applicable. This “highest-of” formula creates an effective pricing floor.

Are there exemptions to the mandatory tender offer rule?

Yes. The SRC IRR recognises limited exemptions, including involuntary transfers (foreclosure, court orders, estate settlements), purchases from the issuer in registered primary offerings, and SEC-approved transactions that do not alter control or prejudice minority shareholders. Exemptions are interpreted narrowly and require proper documentation or prior SEC clearance.

What is not permitted during a tender offer?

Philippine securities law prohibits insider trading based on material non-public information about the offer, selective disclosure to certain shareholders, coercive conditions that discriminate between tendering and non-tendering holders, and any misleading or incomplete communications. Violations can result in SEC enforcement, civil liability and criminal penalties.

What happens if a bidder fails to make a required mandatory tender offer?

The SEC may order the acquirer to rescind the triggering acquisition, impose administrative fines, and refer the matter for criminal prosecution under the SRC. Shareholders may also seek injunctive relief through the courts. Directors and officers who knowingly participate in the breach may face personal liability.

Is a fairness opinion always required in the Philippines?

A fairness opinion is not mandated in every case, but it is required when the SEC directs it, when related parties or conflicts of interest are involved, or when the target board issues a recommendation to shareholders. In practice, most significant mandatory tender offers include a fairness opinion because the board’s recommendation letter typically relies on an independent valuation to support its position.

What Is The Mandatory Tender Offer

Understanding what is the mandatory tender offer rule is essential for any acquirer, issuer or adviser involved in control transactions on the Philippine Stock Exchange (PSE). Rooted in Rule 19 of the Securities Regulation Code (SRC) and its Implementing Rules and Regulations (IRR), the mandatory tender offer rule compels a buyer who crosses specific ownership thresholds to extend a public offer to all remaining shareholders of the target company at a regulated price. The mechanism exists to protect minority shareholders from being locked into a company whose control has shifted without their consent, and non-compliance exposes acquirers to SEC enforcement actions, deal rescission and personal liability.

With recurring delisting activity, continued private-equity interest in Philippine listed companies, and a series of SEC Office of the General Counsel (OGC) opinions issued through 2024–2025 refining the rule’s application, corporate counsel must treat tender-offer compliance as a standing item on every acquisition due-diligence checklist.

Quick Answer, What the Mandatory Tender Offer Is

A mandatory tender offer in the Philippines is a compulsory public bid that an acquirer must make to all shareholders of a listed company once the acquirer’s holdings, alone or together with related parties, cross one of the ownership thresholds prescribed by SRC Rule 19. The rule is not optional: once triggered, the acquirer must offer to purchase all remaining shares of the same class at a price no lower than the regulatory floor.

The three principal triggers are:

15 % threshold. Acquisition of 15 % or more of any class of equity security of a listed corporation within a 12-month period.
35 % threshold. Acquisition of 35 % or more of the outstanding voting shares within a 12-month period.
50 % threshold. Acquisition resulting in ownership of more than 50 % of the total outstanding equity, regardless of the period over which the shares were accumulated.

Each trigger carries distinct filing, disclosure and pricing obligations that are detailed in the sections below.

Legal Basis, SRC Rule 19 and the Implementing Rules and Regulations

The mandatory tender offer rule draws its statutory authority from the Securities Regulation Code (Republic Act No. 8799), specifically Sections 19 and 27. These provisions empower the SEC to prescribe the conditions under which a tender offer must be made, the information to be disclosed, and the remedies available to aggrieved shareholders. The detailed mechanics are found in the SRC IRR, the Amended Implementing Rules and Regulations of the SRC, which devote an entire sub-part to tender offers and set out the thresholds, pricing rules, timelines and exemptions that practitioners work with on a daily basis.

Key Rule References

SRC Section 19. Establishes the general obligation to make a tender offer when the acquisition of equity securities of a listed company meets the prescribed conditions.
SRC Section 27. Addresses the broader disclosure and filing requirements for any person who acquires beneficial ownership of a specified percentage of equity securities.
SRC IRR, Rule 19. Contains the operative provisions on mandatory tender offer rules in the Philippines: threshold percentages, pricing floors, acceptance periods, exempt transactions, and prohibited conduct.
SEC OGC Opinions (series). Interpretive opinions issued by the SEC’s Office of the General Counsel, including SEC OGC Opinion No. 24-38, that clarify how the thresholds apply in specific fact patterns such as chain acquisitions, nominee structures and involuntary transfers.

Practitioners should cross-reference the SEC’s official rules repository and the PSE’s Listing and Disclosure Rules, which impose additional publication and notice obligations on listed issuers whose securities are subject to a tender offer.

Thresholds That Trigger a Mandatory Tender Offer

The mandatory tender offer rules in the Philippines revolve around three bright-line percentage triggers. The table below summarises each threshold, the factual conditions that activate it, and the immediate compliance implications for the acquirer.

Trigger Threshold	What Triggers It (Basic Rule)	Filing / Timeline Implication
15 % within 12 months (equity securities)	Aggregate acquisition of equity securities equal to or exceeding 15 % of any class of equity security of a listed corporation within any 12-month period.	Must assess whether a tender offer is required; prepare disclosure documents and pricing calculation; notify the SEC and PSE in accordance with Rule 19.
35 % within 12 months (voting shares)	Acquisition reaching or crossing 35 % of the outstanding voting shares of a listed corporation within any 12-month period.	Mandatory tender offer obligation; immediate filing of the tender-offer report with the SEC and public notice via the PSE; acceptance period and pricing-floor rules apply.
>50 % (any time)	Acquisition resulting in ownership of more than 50 % of the total outstanding equity securities, regardless of the time frame over which shares were accumulated.	Mandatory tender offer for all remaining equity; full takeover obligations apply; may trigger delisting requirements or additional corporate approvals under PSE rules.

The 12-Month Aggregation Rule

A critical compliance point for the tender offer in the Philippines is the rolling 12-month look-back. Acquisitions are not measured on a single-transaction basis, the SEC aggregates all purchases of the same class of equity securities made by the acquirer, its affiliates, associates, nominees and persons acting in concert within any consecutive 12-month window. This means that seemingly innocuous market purchases, block trades and off-market transfers can cumulatively breach a threshold without a single headline transaction.

SEC OGC opinions have confirmed that indirect acquisitions, including purchases by subsidiaries, nominees, or entities under common control, are counted towards the acquirer’s total. The practical effect is that any buyer assembling a position in a Philippine listed company must maintain a real-time ownership tracker that captures all related-party purchases, or risk an inadvertent breach of the mandatory tender offer rule.

Industry observers expect the SEC to continue issuing interpretive guidance on digital-asset-linked equity instruments and cross-border chain acquisitions, reflecting the growing complexity of ownership structures in Philippine-listed companies.

Timeline and Procedural Steps, Filings, Public Notices and Acceptance Period

Once a threshold is triggered, the acquirer must execute a strict sequence of procedural steps under the SRC IRR and PSE Listing and Disclosure Rules. The timeline below represents the standard compliance pathway for a mandatory tender offer in the Philippines.

Threshold breach / acquisition date. Determine the date on which total holdings (including aggregated related-party purchases) first meet or exceed the applicable threshold. This is the start of the compliance clock.
Filing of the tender-offer report with the SEC. The acquirer must file a sworn tender-offer report, together with required schedules, audited financial statements and the proposed offer terms, with the Securities and Exchange Commission. Filing must occur before or contemporaneously with the commencement of the offer.
Notice to the target company and the PSE. The acquirer must deliver a copy of the tender-offer report to the board of the target company and to the PSE. The target company’s board is then required to make its own recommendation (or abstain) and circulate it to shareholders.
Publication of the offer. A public notice of the tender offer must be published in at least one newspaper of general circulation, and the offer document must be made available to all holders of the relevant class of securities. The PSE’s electronic disclosure system is the primary dissemination channel for listed-company announcements.
Acceptance period opens. The offer must remain open for the minimum acceptance period prescribed under Rule 19, generally not less than 20 business days from the date the offer is first published or sent to shareholders.
Extension and withdrawal rights. If the acquirer increases the consideration or changes a material term during the acceptance period, the offer must be extended for an additional period (typically at least 10 business days from the date of the change) so that shareholders have adequate time to reconsider.
Settlement and payment. Once the acceptance period closes, shares tendered are settled and paid for promptly, ordinarily through the PSE’s clearing and settlement infrastructure for listed securities.

How Many Days to Accept a Tender Offer?

Under the SRC IRR, the minimum acceptance period for a tender offer is 20 business days from the date the offer is first published or sent to security holders. If a competing bid is launched or the offeror materially amends the terms, the acceptance period must be extended by at least 10 additional business days. The likely practical effect of these extension rules is that most contested or amended offers remain open for 30 to 40 business days, a point that acquirers must factor into transaction timelines, financing commitments and regulatory condition deadlines.

Shareholders also retain the right to withdraw their acceptance at any time before the expiration of the offer period, ensuring that they can respond to competing bids or revised terms without being locked in.

Pricing Rules, Pricing Floor, Board Advisers and Fairness Opinion Triggers

The pricing rules for a mandatory tender offer are among the most consequential, and most frequently misunderstood, elements of the SRC rules in the Philippines. The regulatory framework is designed to ensure that minority shareholders receive consideration that is at least as favourable as the price paid by the acquirer in the transactions that triggered the offer.

Under the Securities Regulation Code IRR, the offer price in a mandatory tender offer must not be lower than the highest of the following benchmarks:

Highest acquisition price. The highest price paid by the acquirer (or any person acting in concert with the acquirer) for any shares of the same class during the 12-month period preceding the filing of the tender-offer report.
Highest closing price. The highest closing price of the shares on the PSE during the same 12-month look-back period.
Fair value as determined by an independent financial adviser. Where the SEC or the offeror’s circumstances require it, the price must reflect fair value as established in an independent valuation report, commonly referred to as a fairness opinion.

This “highest-of” formula creates a pricing floor that the acquirer cannot undercut. In practice, the formula can produce an offer price significantly above the current market price, particularly if the acquirer paid a premium in a negotiated block trade during the preceding 12 months.

Valuation Methods and When a Fairness Opinion Is Required

The mandatory tender offer rule does not prescribe a single valuation methodology. Common approaches used in fairness opinions for Philippine tender offers include:

Comparable company analysis. Benchmarking the target’s valuation multiples (P/E, EV/EBITDA) against listed peers.
Discounted cash flow (DCF). Projecting the target’s future free cash flows and discounting them to present value.
Net asset value. Particularly relevant for holding companies, real-estate firms and banks where asset-based valuations may better reflect intrinsic worth.
Precedent-transaction analysis. Examining prices paid in prior acquisitions of comparable companies or minority stakes.

A fairness opinion from an independent financial adviser is required whenever the SEC directs it, when the target company’s board seeks to provide an informed recommendation to its shareholders, or when the transaction involves related parties or potential conflicts of interest. In practice, most significant mandatory tender offers engage an independent adviser because the board’s recommendation letter to shareholders typically references a fairness opinion to support its position. Early indications suggest that the SEC is increasingly scrutinising fairness opinions in related-party control transactions, reinforcing the need for well-supported, method-neutral valuation reports.

The table below illustrates a simplified pricing-floor calculation:

Pricing Benchmark	Amount (₱ per share)
Highest acquisition price paid by bidder (past 12 months)	₱ 12.50
Highest PSE closing price (past 12 months)	₱ 11.80
Fair value per independent valuation	₱ 13.00
Mandatory minimum offer price (highest of the three)	₱ 13.00

In this scenario, even though the acquirer’s most recent purchase was at ₱ 12.50, the independent valuation sets the floor at ₱ 13.00. The bidder may offer more, but cannot offer less.

Exemptions, Partial Offers and Common Compliance Traps

Recognised Exemptions

The SRC IRR identifies several categories of transactions that are exempt from the mandatory tender offer requirement, provided they meet strict conditions:

Involuntary transfers. Acquisitions resulting from foreclosure, court order, estate settlement, or operation of law are generally exempt, but the acquirer must still file the required ownership reports with the SEC.
Purchases from the issuer. Shares purchased directly from the issuer in a primary offering (including rights offerings) registered with the SEC are typically excluded.
Market stabilisation activities. Underwriter purchases made within the parameters of a stabilisation programme approved by the SEC.
SEC-approved transactions. The SEC retains discretion to grant exemptions for transactions that it determines do not have the effect of changing control or prejudicing minority shareholders, provided the applicant files for and obtains prior clearance.

Practitioners should note that exemptions are interpreted narrowly by the SEC, and the burden of proof falls on the party claiming exemption. SEC OGC Opinion No. 24-38, analysed in 2025 practitioner commentary, confirmed that chain acquisitions, where a buyer acquires a parent entity that indirectly controls a listed subsidiary, may still trigger the mandatory tender offer obligation for the listed subsidiary’s shares, even if the direct purchase was of unlisted shares.

Prohibited Conduct During a Tender Offer

Philippine securities law imposes strict conduct rules once a tender offer is pending:

Insider trading. Persons in possession of material non-public information about the tender offer are prohibited from trading in the target’s securities or tipping others.
Selective disclosure. The offeror may not selectively provide information to certain shareholders that is not equally available to all holders of the same class.
Coercive tactics. Imposing conditions that discriminate between tendering and non-tendering shareholders, such as “first-come, first-served” acceptance or differential pricing, is prohibited.
Misleading communications. All offer materials, press statements and responses by the target’s board must be accurate, complete and not misleading.

A breach of any of these prohibitions can result in SEC enforcement proceedings, civil liability to shareholders, and criminal prosecution under the SRC.

Practical Checklist for Acquirers and Issuers

Below is a step-by-step compliance checklist covering the mandatory tender offer rules in the Philippines. Acquirers and their counsel should treat this as a minimum framework, every transaction will have bespoke elements that require tailored advice.

Run a threshold audit. Before executing any acquisition, calculate the acquirer’s current holdings (including affiliates, nominees and concert parties) and model the post-acquisition position against the 15 %, 35 % and 50 % thresholds.
Check the 12-month look-back. Aggregate all acquisitions of the same class of equity securities made by related parties within the preceding 12 months.
Engage an independent financial adviser. If a threshold will be crossed, appoint an independent adviser to prepare a fairness opinion and pricing-floor analysis before the offer is filed.
Draft the tender-offer report. Prepare the sworn tender-offer report, schedules, financial statements, source-of-funds disclosure and proposed offer terms in the format prescribed by the SRC IRR.
File with the SEC. Submit the tender-offer report to the SEC before or simultaneously with the commencement of the offer.
Notify the target board and the PSE. Deliver copies of the report to the target company’s board and the PSE; coordinate publication timing with the exchange’s disclosure schedule.
Publish the offer. Issue the public notice in a newspaper of general circulation and through the PSE Electronic Disclosure Generation Technology (EDGE) system.
Monitor the acceptance period. Track acceptances, manage shareholder inquiries, and be prepared to extend the offer period if terms change or a competing bid emerges.
Settle tendered shares. Upon expiration, settle accepted shares promptly through the PSE’s clearing infrastructure and update SEC beneficial-ownership filings accordingly.
Post-offer reporting. File the post-tender-offer report with the SEC disclosing the results, final ownership position and any subsequent intentions regarding the target.

Case Studies and Illustrative Examples

Scenario A, Creeping Acquisition Crossing 15 %

Facts. An offshore private-equity fund acquires 8 % of the listed equity of a Philippine mining company in January through a series of open-market purchases. Over the following eight months, the fund and a co-investment vehicle acquire an additional 7.5 % through a combination of block trades and negotiated off-market transactions. By September, aggregate holdings reach 15.5 % within the 12-month window.

Trigger. The 15 % threshold under SRC Rule 19 is breached. A mandatory tender offer is required.

Required filings. The fund must file a tender-offer report with the SEC, notify the mining company’s board and the PSE, publish the offer, and keep it open for the minimum 20-business-day acceptance period.

Pricing outcome. The highest price paid across all related-party purchases during the 12-month period was ₱ 5.80 per share (a block trade in June). The highest PSE closing price over the same period was ₱ 5.60. The independent valuation placed fair value at ₱ 5.50. The mandatory minimum offer price is therefore ₱ 5.80, the highest of the three benchmarks.

Scenario B, Control Acquisition Above 50 %

Facts. A conglomerate already holds 42 % of a listed food-and-beverage company. It negotiates a share-purchase agreement with the founding family to acquire an additional 12 % block, bringing total ownership to 54 %.

Trigger. The acquisition pushes holdings above 50 % of the total outstanding equity, triggering the mandatory tender offer obligation regardless of the time frame.

Required filings. Full tender-offer compliance: SEC filing, PSE notification, newspaper publication, and a 20-business-day offer to all remaining shareholders. The conglomerate must also evaluate whether the acquisition triggers delisting requirements or additional PSE corporate-approval processes.

Pricing outcome. The negotiated block price was ₱ 22.00 per share. The highest closing price on the PSE during the preceding 12 months was ₱ 20.50. The independent valuation yielded ₱ 23.25. The mandatory floor is ₱ 23.25, requiring the conglomerate to offer at least that amount to all remaining shareholders, approximately 6 % above the negotiated block price.

When to Consult Counsel, Enforcement Risk and Penalties

Failure to comply with the mandatory tender offer rule carries severe consequences. The SEC can order the rescission of the triggering acquisition, impose administrative fines, and refer violations for criminal prosecution under the SRC. Directors and officers who knowingly participate in or permit a breach may face personal liability, including fines and imprisonment.

Beyond statutory penalties, non-compliance creates deal-execution risk: target-company shareholders may petition the SEC or the courts for injunctive relief, and competing bidders may use a compliance failure as grounds to challenge or delay the transaction. Acquirers should seek specialised M&A counsel before executing any transaction that could approach a threshold, not after. The cost of a pre-deal compliance review is a fraction of the cost of regulatory remediation, litigation and reputational damage. Companies navigating these requirements alongside other Philippine regulatory obligations, such as banking and corporate-account requirements, benefit from coordinated legal and financial advice.

Conclusion

Understanding what is the mandatory tender offer and how it applies in the Philippines is a non-negotiable competency for anyone involved in acquiring, advising on, or managing control transactions in listed companies. The three percentage thresholds, 15 %, 35 % and 50 %, act as bright-line triggers that demand immediate attention to filing deadlines, pricing floors and shareholder-protection obligations. With the SEC continuing to refine its interpretive guidance and enforcement posture, the safest approach is to treat every potential threshold crossing as a compliance event that requires legal review, independent valuation and careful procedural execution from the outset.

Need Legal Advice?

This article was produced by Global Law Experts. For specialist advice on this topic, contact Juanito L. Sañosa, Jr. at Villaraza & Angangco, a member of the Global Law Experts network.