LPX CEO Discloses 10b5-1 Plan to Sell 340,000 Shares

TL;DR

**LPX CEO's planned sale of 340,000 shares is a red flag for investors, signaling potential lack of confidence despite the 10b5-1 structure.**

AI Summary

Louisiana-Pacific Corporation (LPX) filed a Form 10-Q/A on December 12, 2025, amending its Quarterly Report for the period ended September 30, 2025. This amendment specifically addresses the inadvertent omission of a Rule 10b5-1 trading arrangement adopted by its Chief Executive Officer, W. Bradley Southern, on August 27, 2025. The arrangement permits the sale of up to 340,000 shares of LPX common stock between December 1, 2025, and May 15, 2026. The filing also includes new certifications from the CEO and CFO, Alan J.M. Haughie, pursuant to Rule 13a-14(a) of the Exchange Act, as Exhibits 31.1 and 31.2. No financial statements were amended, and the original financial disclosures remain unchanged. The company confirmed it is a large accelerated filer and had 69,643,461 shares of common stock outstanding as of November 3, 2025.

Why It Matters

This amendment provides crucial transparency regarding executive stock sales, which can influence investor perception of insider confidence. While a 10b5-1 plan is pre-scheduled and designed to avoid insider trading accusations, the sheer volume of 340,000 shares from the CEO, W. Bradley Southern, could be interpreted by some investors as a signal, especially in a competitive building materials market. Competitors like Weyerhaeuser (WY) and Boise Cascade (BCC) are closely watched for similar insider activity, and this disclosure ensures LPX maintains regulatory compliance and investor trust.

Risk Assessment

Risk Level: medium — The risk level is medium because while the 10b5-1 plan is a pre-scheduled, legal mechanism, the sale of up to 340,000 shares by CEO W. Bradley Southern, representing a significant portion of his holdings, could be perceived negatively by the market. This volume, without further context on personal financial planning, might raise questions about insider sentiment regarding future company performance.

Analyst Insight

Investors should monitor the actual sales executed under W. Bradley Southern's 10b5-1 plan and consider this information in conjunction with LPX's broader financial performance and market conditions. While not an immediate sell signal, it warrants a deeper dive into the company's outlook and competitive landscape.

Executive Compensation

Key Numbers

• 340,000 — Shares to be sold by CEO (W. Bradley Southern's Rule 10b5-1 trading arrangement)
• 69,643,461 — Common shares outstanding (as of November 3, 2025)
• December 1, 2025 — Trading arrangement start date (for CEO's stock sales)
• May 15, 2026 — Trading arrangement end date (for CEO's stock sales)
• August 27, 2025 — Rule 10b5-1 adoption date (by CEO W. Bradley Southern)

Key Players & Entities

• LOUISIANA-PACIFIC CORPORATION (company) — registrant filing the 10-Q/A
• W. Bradley Southern (person) — Chairperson of the Board of Directors and Chief Executive Officer of LPX
• Alan J.M. Haughie (person) — Executive Vice President and Chief Financial Officer of LPX
• SEC (regulator) — Securities and Exchange Commission
• 340,000 (dollar_amount) — number of shares of common stock W. Bradley Southern plans to sell
• 69,643,461 (dollar_amount) — shares of common stock outstanding as of November 3, 2025
• New York Stock Exchange (regulator) — exchange where LPX Common Stock is registered
• August 27, 2025 (date) — date W. Bradley Southern entered into the Rule 10b5-1 trading arrangement
• December 1, 2025 (date) — start date for W. Bradley Southern's stock sales
• May 15, 2026 (date) — end date for W. Bradley Southern's stock sales

FAQ

Risk Factors

• Rule 10b5-1 Trading Arrangement Disclosure [medium — regulatory]: The inadvertent omission of a Rule 10b5-1 trading arrangement adopted by the CEO on August 27, 2025, required an amendment to the Form 10-Q. This highlights the importance of accurate and complete disclosures regarding executive trading plans.
• CEO and CFO Certifications [medium — regulatory]: New certifications from the CEO and CFO were filed as required by Rule 13a-14(a) of the Exchange Act. These certifications attest to the accuracy of the company's financial reporting.

Industry Context

Louisiana-Pacific Corporation operates in the building materials industry, specifically focusing on wood products. The sector is cyclical and sensitive to housing market conditions, interest rates, and overall economic activity. Competitors include other large lumber and building product manufacturers. Trends often involve sustainability, efficient production, and managing raw material costs.

Regulatory Implications

The amendment highlights the critical importance of accurate and timely disclosure of executive trading plans under SEC rules. Failure to properly disclose such arrangements can lead to regulatory scrutiny and require corrective filings, as seen with this 10-Q/A. The new certifications underscore ongoing compliance with Sarbanes-Oxley and Exchange Act requirements.

What Investors Should Do

1. Review the original Form 10-Q filing alongside this amendment.
2. Monitor the CEO's stock transactions between December 1, 2025, and May 15, 2026.
3. Assess the company's overall disclosure controls and procedures.

Key Dates

• 2025-08-27: CEO W. Bradley Southern adopted a Rule 10b5-1 trading arrangement. — This arrangement allows for the sale of up to 340,000 shares of LPX common stock and was inadvertently omitted from the original filing.
• 2025-09-30: Quarterly period ended. — The period covered by the original Form 10-Q filing.
• 2025-11-05: Original Form 10-Q filed. — The initial quarterly report for the period ended September 30, 2025.
• 2025-11-03: Record date for outstanding shares. — 69,643,461 shares of common stock were outstanding as of this date.
• 2025-12-01: Start date for CEO's Rule 10b5-1 trading arrangement. — The period during which the CEO is permitted to sell shares under the trading plan begins.
• 2025-12-12: Form 10-Q/A (Amendment No. 1) filed. — This amendment addresses the omission of the CEO's trading plan and includes new executive certifications.
• 2026-05-15: End date for CEO's Rule 10b5-1 trading arrangement. — The period during which the CEO is permitted to sell shares under the trading plan concludes.

Glossary

Rule 10b5-1 trading arrangement

A written plan adopted by an insider (like a CEO) to buy or sell company stock at a predetermined time or based on a predetermined formula. It provides an affirmative defense against allegations of insider trading. (This filing is an amendment to correct the omission of such a plan adopted by the CEO, W. Bradley Southern, for the sale of up to 340,000 shares.)

Form 10-Q/A

An amendment to a previously filed Form 10-Q (Quarterly Report). It is used to correct or supplement information previously reported. (Louisiana-Pacific Corporation filed this amendment to include previously omitted information regarding an executive's trading plan and new certifications.)

Rule 13a-14(a)

A rule under the Securities Exchange Act of 1934 that requires the principal executive officer and principal financial officer of the company to certify the accuracy of financial reports. (New certifications from the CEO and CFO pursuant to this rule were filed with the amendment.)

Large accelerated filer

A classification for public companies that meet certain size and filing history requirements, indicating a certain level of public float and reporting compliance. (Louisiana-Pacific Corporation confirmed it is a large accelerated filer, which implies specific disclosure and filing obligations.)

Year-Over-Year Comparison

This filing is an amendment to the original Form 10-Q for the quarter ended September 30, 2025, and does not amend the financial statements. Therefore, a direct comparison of financial metrics like revenue growth, margins, or net income to the previous year is not possible based on this amendment alone. The primary change is the disclosure of a Rule 10b5-1 trading arrangement by the CEO and new executive certifications, rather than a change in the company's financial performance or outlook.

Key Financial Figures

• $1 — ange on which registered Common Stock, $1 par value LPX New York Stock Exchange

Filing Documents

• lpx-20250930.htm (10-Q/A) — 44KB
• q3202510-qaexhibit311.htm (EX-31.1) — 4KB
• q3202510-qaexhibit312.htm (EX-31.2) — 4KB
• 0000060519-25-000039.txt ( ) — 503KB
• lpx-20250930.xsd (EX-101.SCH) — 3KB
• lpx-20250930_def.xml (EX-101.DEF) — 19KB
• lpx-20250930_lab.xml (EX-101.LAB) — 130KB
• lpx-20250930_pre.xml (EX-101.PRE) — 70KB
• lpx-20250930_htm.xml (XML) — 8KB

- OTHER INFORMATION

PART II - OTHER INFORMATION

OTHER INFORMATION

ITEM 5. OTHER INFORMATION None of our directors or officers adopted , modified or terminated a Rule 10b5-1 trading arrangement or a non-Rule 10b5-1 trading arrangement during the quarter ended September 30, 2025, except that on August 27, 2025, W. Bradley Southern , our Chairperson of the Board of Directors and Chief Executive Officer , entered into a Rule 10b5-1 trading arrangement intended to satisfy the affirmative defense conditions provided in Rule 10b5-1(c) of the Exchange Act for the sale of up to 340,000 shares of our common stock from December 1, 2025 through May 15, 2026 . 2

EXHIBITS

ITEM 6. EXHIBITS 31.1 *Certifications of Chief Executive Officer Pursuant to Rule 13a-14(a) under the Securities Exchange Act of 1934. * 31.2 *Certifications of Chief Financial Officer Pursuant to Rule 13a-14(a) under the Securities Exchange Act of 1934. * 101.INS Inline XBRL Instance Document - The instance document does not appear in the interactive data file because its XBRL tags are embedded within the Inline XBRL document * 101.SCH Inline XBRL Taxonomy Extension Schema Document.* 101.CAL Inline XBRL Taxonomy Extension Calculation Linkbase Document.* 101.LAB Inline XBRL Taxonomy Extension Label Linkbase Document.* 101.PRE Inline XBRL Taxonomy Extension Presentation Linkbase Document.* 101.DEF Inline XBRL Taxonomy Extension Definition Linkbase Document.* 104 Cover Page Interactive Data File (embedded with Inline XBRL document and contained in Exhibit 101)* *Filed herewith. 3

SIGNATURES

SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized. LOUISIANA-PACIFIC CORPORATION Date: December 12, 2025 B Y : /s/ W. Bradley Southern W. Bradley Southern Chief Executive Officer Date: December 12, 2025 B Y : /s/ Alan J.M. Haughie Alan J.M. Haughie Executive Vice President and Chief Financial Officer

View Full Filing

View this 10-Q/A filing on SEC EDGAR