SIMPSON MFG INC

Ticker: SSD CUSIP: 829073105 Class: Common Stock

ADAGE CAPITAL PARTNERS GP, L.L.C.'s Holding History (CIK: 0001165408)

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

Q4 2025

Shares 150,000 Value ($000) $24,221 Avg Close $168.74 Range $156.04 - $186.68

Q3 2025

Shares 175,000 Value ($000) $29,306 Avg Close $178.32 Range $153.41 - $197.12

Q2 2025

Shares 75,000 Value ($000) $11,648 Avg Close $154.06 Range $136.62 - $166.33

Q1 2020

Shares 103,982 Value ($000) $6,445 Avg Close $74.16 Range $44.65 - $83.80

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	150,000	$24,221	$168.74	$156.04 - $186.68
Q3 2025	175,000	$29,306	$178.32	$153.41 - $197.12
Q2 2025	75,000	$11,648	$154.06	$136.62 - $166.33
Q1 2020	103,982	$6,445	$74.16	$44.65 - $83.80