Lam Research (LRCX)Rep. Jonathan Jackson (IL01) disclosed a purchase $1K–$15K

$1,001–$15,000

Reported range · official band, not an exact amount

41 days

Disclosure lag

Traded

Aug 13, 2025

Disclosed

Sep 23, 2025

The story around this disclosure

Every dated public record OQRO holds about the company from 60 days before to 120 days after, oldest first. It shows what was going on; none of it is a stated reason for the trade.

1. Oct 29, 2024CongressDisclosed purchase of LRCX — reported range $1,001 - $15,000
2. Feb 4, 2025CongressDisclosed partial sale of LRCX — reported range $1,001 - $15,000
3. May 12, 2025CongressDisclosed sale of LRCX — reported range $15,001 - $50,000
4. Jul 18, 2025Congress · 1 personMembers of Congress: 2 sales
5. Aug 7, 2025Congress · 1 personMembers of Congress: 2 purchases
6. Aug 13, 2025 · this disclosureCongressDisclosed purchase of LRCX — reported range $1,001 - $15,000

What came next

1. Aug 28, 2025CongressDisclosed partial sale of LRCX — reported range $15,001 - $50,000
2. Sep 3, 2025CongressDisclosed sale of LRCX — reported range $1,001 - $15,000
3. Sep 8, 2025Company filing · Form 8-K · Auditor changeChanged its auditor
4. Sep 22, 2025Congress · 1 personMembers of Congress: 2 sales
5. Sep 23, 2025CongressDisclosed sale of LRCX — reported range $1,001 - $15,000
6. Oct 13, 2025Insider · Their largest sale since 2019Officer sold ~$7.25M of LRCX shares in the open market
7. Oct 22, 2025Company filing · Form 8-K · ResultsReported its results
8. Oct 27, 2025Insider · 1 personInsiders: 2 sales (~$1.4M)
9. Nov 3, 2025InsiderDirector sold ~$208K of LRCX shares in the open market
10. Nov 4, 2025Company filing · Form 8-K · Shareholder rights, Executive changeChanged a top executive or board member, and changed the rights of its shareholders (and 2 more items)
11. Nov 7, 2025InsiderDirector sold ~$4.8K of LRCX shares in the open market
12. Nov 14, 2025InsiderCFO sold ~$6.04M of LRCX shares in the open market
13. Nov 20, 2025Government · Federal Register noticePhasedown of Hydrofluorocarbons: Notice of 2026 Allowance Allocations for Production and Consumption of Regulated Substances Under the American Innovation and Manufacturing Act of 2020, and Notice of Final Actions Establishing Administrative Consequences

How to read House Clerk periodic transaction report

The STOCK Act is a 2012 US law that requires members of Congress, and some senior staff, to publicly report their stock trades, and those of their spouse and dependent children, within 45 days.

Full guide: What is the STOCK Act?

What else is on file for Lam Research

For Lam Research, OQRO holds 11 insider filings (SEC Form 4 or Form 144), 2 Congress trade reports and 134 fund holdings reports (13F) dated in the last 90 days.

These are records OQRO holds, counted by their date, not a measure of how much trading took place. Routine paperwork such as option exercises and tax withholding is left out. Everything for the company is on its LRCX page.

Other recent filings by Rep. Jonathan Jackson (IL01)

• House Clerk periodic transaction report at Viasat, Inc. (VSAT)Sep 3, 2026
• House Clerk periodic transaction report at Hilton Worldwide (HLT)Jul 15, 2026
• House Clerk periodic transaction report at McKesson Corporation (MCK)Jul 15, 2026
• House Clerk periodic transaction report at Sphere Entertainment (SPHR)Jul 15, 2026
• House Clerk periodic transaction report at Microsoft (MSFT)Jun 16, 2026

The full history of Rep. Jonathan Jackson (IL01) is on the profile page.

How this filing works

• The STOCK Act

Other disclosures at Lam Research

• SEC Form 4Sep 10, 2026
• SEC Form 4Sep 10, 2026
• SEC Form 144Sep 9, 2026
• SEC Form 144Sep 9, 2026
• SEC Form 4Sep 3, 2026
• SEC Form 4Sep 3, 2026

Everything OQRO holds on this company is on its LRCX page.