Kevin Joseph Fitzgerald - 01 Jul 2025 Form 4 Insider Report for ALNYLAM PHARMACEUTICALS, INC. (ALNY)

Role: CSO & EVP, Head of Research
Signature: By: Brett Budzinski, Attorney-in-Fact For: Kevin Fitzgerald
Issuer symbol: ALNY
Transactions as of: 01 Jul 2025
Net transactions value: $0
Form type: 4
Filing time: 02 Jul 2025, 16:26:48 UTC
Previous filing: 05 Mar 2025
Next filing: 19 Aug 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Fitzgerald Kevin Joseph	CSO & EVP, Head of Research	675 WEST KENDALL STREET, HENRI A. TERMEER SQUARE, CAMBRIDGE	By: Brett Budzinski, Attorney-in-Fact For: Kevin Fitzgerald	02 Jul 2025	0001886431

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	ALNY	Common Stock	Award	$0	+7,763	+57%	$0.000000	21,264	01 Jul 2025	Direct	F1
holding	ALNY	Common Stock						537	01 Jul 2025	by Managed Account	F2

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	These shares are represented by restricted stock units (RSUs) granted under the Amended and Restated 2018 Stock Incentive Plan. Each RSU represents a contingent right to receive one share of common stock. The RSUs will vest over a three-year period, with one third vesting on each of the first, second and third anniversaries of the grant date, subject to the Reporting Persons continuous service with the Issuer as of each such vesting date.
F2	Reflects shares of ALNY common stock acquired by the Reporting Person under the issuer 401(k) plan as a result of the issuer 401(k) matching contribution program.

Content

These shares are represented by restricted stock units (RSUs) granted under the Amended and Restated 2018 Stock Incentive Plan. Each RSU represents a contingent right to receive one share of common stock. The RSUs will vest over a three-year period, with one third vesting on each of the first, second and third anniversaries of the grant date, subject to the Reporting Persons continuous service with the Issuer as of each such vesting date.

Reflects shares of ALNY common stock acquired by the Reporting Person under the issuer 401(k) plan as a result of the issuer 401(k) matching contribution program.