ALNYLAM PHARMACEUTICALS INC

Ticker: ALNY CUSIP: 02043Q107 Class: EQTY

BLAIR WILLIAM & CO/IL's Holding History (CIK: 0000902367)

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

Q4 2025

Shares 9,774 Value ($000) $3,887 Avg Close $442.56 Range $387.03 - $495.55

Q3 2025

Shares 10,244 Value ($000) $4,671 Avg Close $407.20 Range $309.57 - $484.21

Q2 2025

Shares 10,592 Value ($000) $3,454 Avg Close $276.71 Range $205.87 - $327.21

Q1 2025

Shares 11,078 Value ($000) $2,991 Avg Close $257.00 Range $230.79 - $300.90

Q4 2024

Shares 11,962 Value ($000) $2,815 Avg Close $262.99 Range $229.86 - $304.39

Q3 2024

Shares 13,334 Value ($000) $3,667 Avg Close $260.36 Range $231.01 - $287.55

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	9,774	$3,887	$442.56	$387.03 - $495.55
Q3 2025	10,244	$4,671	$407.20	$309.57 - $484.21
Q2 2025	10,592	$3,454	$276.71	$205.87 - $327.21
Q1 2025	11,078	$2,991	$257.00	$230.79 - $300.90
Q4 2024	11,962	$2,815	$262.99	$229.86 - $304.39
Q3 2024	13,334	$3,667	$260.36	$231.01 - $287.55