Dennis A. Ausiello - 16 May 2024 Form 4 Insider Report for ALNYLAM PHARMACEUTICALS, INC. (ALNY)

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	ALNY	Stock Option (right to buy)	Award	$0	+5.23K		$0.00	5.23K	16 May 2024	Common Stock	5.23K	$151.22	Direct	F1

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

Dennis A. Ausiello is no longer subject to Section 16 filing requirements. Form 4 or Form 5 obligations may continue.

Id	Content
F1	This award vests in full upon the earlier of the first anniversary of the grant date and the date of any earlier retirement or resignation of the Reporting Person, provided such date of retirement or resignation occurs no more than 90 days prior to the first anniversary of the grant date.

Exhibit List: Exhibit 24 - Power of Attorney