I. Introduction and Legal Basis
The right of inspection of corporate books and records is a fundamental statutory right granted to stockholders and members of corporations under Philippine law. This right is primarily anchored on Section 73 of the Revised Corporation Code of the Philippines (RCC). It serves as a critical check-and-balance mechanism, ensuring transparency and accountability in corporate management by allowing stockholders access to information necessary to protect their investments and exercise their rights intelligently.
II. Persons Entitled to the Right of Inspection
The right is granted to:

The right is personal to the stockholder or member but may be exercised through a duly authorized representative in writing under oath.
III. Scope of Inspectable Books and Records
The RCC provides a non-exhaustive list of records subject to inspection, which includes:
The corporate books and records of all business transactions;
The minutes of all meetings of stockholders or members;
The stock and transfer book; and
Other corporate records.
This encompasses financial statements, annual reports, board committee reports, and essentially all documents reflecting the corporation’s financial condition and operational decisions.
IV. Proper Purpose Requirement
The stockholder or member must demand inspection in good faith and for a legitimate purpose. The purpose must be germane to the person’s interest as a stockholder/member, such as:
Determining the financial condition of the corporation;
Investigating mismanagement, fraud, or waste;
Ascertaining the value of one’s shares;
Gathering information for a derivative suit or stockholder’s meeting;
Communicating with other stockholders concerning corporate affairs.
A demand based on mere curiosity, vexation, or for a purpose antagonistic to the corporation (e.g., to obtain trade secrets for a competitor) may be validly refused.
V. Manner and Time of Exercise
The inspection must be demanded at reasonable hours on business days. The request should be made in writing to the corporate secretary, stating the specific records sought and the legitimate purpose for the inspection. While the law does not prescribe a specific notice period, the demand must be reasonable. The corporation is obligated to make the records available for a period of at least five (5) business days from receipt of a valid written request.
VI. Duties and Liabilities of the Corporation
Upon a valid demand, the corporation, through its officers, has a mandatory duty to allow the inspection and, upon request, to provide copies of the requested documents. The corporation may impose a reasonable copying fee. Unjustified refusal by the responsible corporate officers (e.g., Corporate Secretary, Treasurer) constitutes an actionable violation. Such officers may be held liable for damages and may face penalties under Section 161 of the RCC, including a fine of up to PhP 1,000,000.00.
VII. Grounds for Valid Refusal
A corporation may lawfully refuse inspection only if:

The burden of proving that the demand is for an illegitimate purpose rests upon the corporation.
VIII. Extinguishment of the Right
The right of inspection is extinguished upon the loss of status as a stockholder or member of record, such as through the valid transfer or sale of all shares, withdrawal of membership, or dissolution of the corporation.
IX. Practical Remedies
Upon an unjustified refusal, the aggrieved stockholder/member may pursue the following remedies in sequence: First, send a formal demand letter via personal service or registered mail with proof of receipt, reiterating the statutory basis and warning of legal action, as this may compel compliance without litigation. Second, if refused, file a verified complaint with the Securities and Exchange Commission (SEC) for a summary proceeding to enforce the right under the SEC’s adjudicatory powers; this administrative route is typically faster. Third, concurrently or alternatively, institute a civil action for Mandamus in the appropriate Regional Trial Court to compel the corporate officers to perform their ministerial duty, wherein the stockholder may also claim actual, moral, and exemplary damages, as well as attorney’s fees, under Articles 19 and 20 of the Civil Code for the bad faith refusal. Fourth, report the violation to the SEC’s Enforcement and Investor Protection Department for potential administrative sanctions against the erring officers. Throughout this process, meticulously document all correspondence and refusals, as such evidence will be crucial in proving bad faith on the part of the corporation.