LAM RESEARCH CORP

Ticker: LRCX CUSIP: 512807306 Class: Common Stock

SECURITY NATIONAL BANK OF SIOUX CITY IOWA /IA/'s Holding History (CIK: 0000894309)

Note: Option positions (PUT/CALL) are excluded.

Q4 2025

Shares 13,981 Value ($000) $2,393 Avg Close $155.36 Range $130.80 - $179.80

Q3 2025

Shares 14,116 Value ($000) $1,890 Avg Close $105.52 Range $90.61 - $133.99

Q2 2025

Shares 14,061 Value ($000) $1,369 Avg Close $78.86 Range $55.98 - $97.67

Q1 2025

Shares 11,716 Value ($000) $852 Avg Close $78.11 Range $70.01 - $90.89

Q4 2024

Shares 7,307 Value ($000) $528 Avg Close $74.98 Range $68.04 - $85.51

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	13,981	$2,393	$155.36	$130.80 - $179.80
Q3 2025	14,116	$1,890	$105.52	$90.61 - $133.99
Q2 2025	14,061	$1,369	$78.86	$55.98 - $97.67
Q1 2025	11,716	$852	$78.11	$70.01 - $90.89
Q4 2024	7,307	$528	$74.98	$68.04 - $85.51