Updated Jul 16, 2026 · Last SEC filing 2026-07-06
LOUISIANA-PACIFIC CORP (LPX) has filed 9 SEC Form 4 insider transactions in the last 90 days, with the most recent on 2026-07-06. 4 Form 8-K material event filings were reported by LPX in the last 90 days. 1 Form 144 notices of proposed sale were filed for LPX stock. InsiderAlpha tracks every LPX SEC filing — Form 4, Form 144, and 8-K — in real time, including Rule 10b5-1 plan detection.
| SEC CIK | 0000060519 |
|---|
| Form 4 filings (90d) | 9 |
|---|---|
| Form 8-K filings (90d) | 4 |
| Form 144 notices (90d) | 1 |
| Latest Form 4 filing | 2026-07-06 |
| Date | Insider | Role | Transaction | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| Hamill Anthony | SVP, COO | F — Tax withholding / forfeiture | 1.1K | $78.66 | $84K | SEC | |
| Bruce Lizanne M | Insider | J — Other acquisition / disposition | 378 | $0.00 | — | SEC | |
| Bruce Lizanne M | Insider | S — Open-market sale | 1.1K | $78.21 | $89K | SEC | |
| Ribieras JeanMichel | Insider | A — Grant or award | 1.9K | $0.00 | — | SEC | |
| BARRETT KELLY HEFNER | Insider | A — Grant or award | 1.9K | $0.00 | — | SEC | |
| Bayardo Jose A | Insider | A — Grant or award | 1.9K | $0.00 | — | SEC | |
| Macadam Stephen E. | Insider | A — Grant or award | 1.9K | $0.00 | — | SEC | |
| Silberhorn Ty R | Insider | A — Grant or award | 1.9K | $0.00 | — | SEC | |
| Bruce Lizanne M | Insider | A — Grant or award | 1.9K | $0.00 | — | SEC | |
| GRASBERGER F NICHOLAS III | Insider | A — Grant or award | 1.9K | $0.00 | — | SEC | |
| Ringblom Jason Paul | Chief Executive Officer | F — Tax withholding / forfeiture | 1.2K | $69.89 | $84K | SEC | |
| Bruce Lizanne M | Insider | S — Open-market sale | 1.3K | $78.59 | $102K | SEC | |
| GRASBERGER F NICHOLAS III | Insider | P — Open-market purchase | 20.0K | $85.49 | $1.71M | SEC | |
| Southern William Bradley | Chief Executive Officer | S — Open-market sale [10b5-1] | 3.3K | $88.84 | $292K | SEC | |
| Southern William Bradley | Chief Executive Officer | S — Open-market sale [10b5-1] | 5.6K | $86.87 | $485K | SEC |
All transactions sourced from SEC EDGAR Form 4 filings for LOUISIANA-PACIFIC CORP (LPX). Updated in real time as new filings are submitted to the SEC.
| Insider | Form 4 filings | Total transaction value |
|---|---|---|
| Bruce Lizanne M | 3 | $89K |
| Ribieras JeanMichel | 1 | — |
| BARRETT KELLY HEFNER | 1 | — |
| GRASBERGER F NICHOLAS III | 1 | — |
| Macadam Stephen E. | 1 | — |
Form 144 must be filed before insiders sell restricted or control stock above SEC thresholds. A cluster of Form 144 notices often precedes a wave of insider distribution.
SEC Form 4 transactions are reported with a one-letter code indicating the type of transaction. Common codes you'll see in LPX insider filings:
| P | Open-market purchase by the insider |
|---|---|
| S | Open-market sale by the insider |
| A | Grant, award, or other acquisition from the issuer |
| M | Exercise or conversion of derivative security (e.g. options) |
| F | Payment of exercise price or tax liability via share withholding |
| G | Bona-fide gift of securities |
| D | Disposition to the issuer (e.g. share buyback participation) |
| J | Other acquisition or disposition |
| X | Exercise of in-the-money or at-the-money derivative security |
| C | Conversion of derivative security |
| V | Transaction voluntarily reported earlier than required |
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