Lam Research · customer concentration
Lam Research’s biggest customers
Who are Lam Research’s biggest customers?
Customer One: 16% of FY2026 revenue
The filing does not name this customer. Hollsteen never guesses names.
“In fiscal year 2025, two customer accounted for approximately 17% and 15% of total revenues.”
Lam Research 10-K, verbatim · 10-K · filed Aug 7, 2026
Numbers, method and sources
Share of revenue per customer as tagged in the filing’s XBRL (ConcentrationRiskPercentage, benchmark revenue). US GAAP requires disclosure only for customers with at least 10% of revenue; a year without a customer means below 10% or not disclosed. Labels like “Customer A” are the filer’s own; the same label is not guaranteed to be the same customer every year.
FY2026
- Customer One (not named in filing) 16%
- Customer Two (not named in filing) 15%
- Customer Three (not named in filing) 12%
- Customer Four (not named in filing) 12%
FY2025
- Customer One (not named in filing) 17%
- Customer Two (not named in filing) 15%
FY2024
- Customer One (not named in filing) 17%
FY2023
- Customer One (not named in filing) 22%
- Customer Two (not named in filing) 16%
FY2022
- Customer One (not named in filing) 21%
- Customer Two (not named in filing) 12%
- Customer Three (not named in filing) 12%
- Customer Four (not named in filing) 11%
FY2021
- Customer One (not named in filing) 25%
- Customer Two (not named in filing) 12%
- Customer Three (not named in filing) 10%
FY2020
- Customer One (not named in filing) 24%
- Customer Two (not named in filing) 14%
- Customer Three (not named in filing) 10%
- Customer Four (not named in filing) 10%
SEC filings only. No market data.
Is Lam Research getting more dependent on one customer?
Largest disclosed customer, by fiscal year
All Lam Research facts from SEC filings · Customer concentration of all companies