John Maraganore - Dec 10, 2021 Form 4 Insider Report for ALNYLAM PHARMACEUTICALS, INC. (ALNY)

Signature
By: /s/ Mary Beth DeLena, Attorney-in-Fact For: John M. Maraganore
Stock symbol
ALNY
Transactions as of
Dec 10, 2021
Transactions value $
$399,829
Form type
4
Date filed
12/14/2021, 03:05 PM
Previous filing
Nov 12, 2021
Next filing
Dec 23, 2021

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction ALNY Common Stock Options Exercise $99.9K +1.04K +0.48% $96.45 216K Dec 10, 2021 Direct
transaction ALNY Common Stock Options Exercise $100K +1.12K +0.52% $88.95 217K Dec 10, 2021 Direct
transaction ALNY Common Stock Options Exercise $100K +839 +0.39% $119.13 218K Dec 10, 2021 Direct
transaction ALNY Common Stock Options Exercise $100K +2.37K +1.09% $42.22* 220K Dec 10, 2021 Direct
holding ALNY Common Stock 3.13K Dec 10, 2021 by Managed Account F1

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) Options Exercise $0 -2.37K -9.47% $0.00 22.6K Dec 10, 2021 Common Stock 2.37K $42.22 Direct F2
transaction ALNY Stock Option (right to buy) Options Exercise $0 -1.12K -1.73% $0.00 63.9K Dec 10, 2021 Common Stock 1.12K $88.95 Direct F2
transaction ALNY Stock Option (right to buy) Options Exercise $0 -1.04K -1.38% $0.00 74K Dec 10, 2021 Common Stock 1.04K $96.45 Direct F2
transaction ALNY Stock Option (right to buy) Options Exercise $0 -839 -1.6% $0.00 51.7K Dec 10, 2021 Common Stock 839 $119.13 Direct F3
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Reflects shares of ALNY common stock acquired by the reporting person under the ALNY 401(k) plan as a result of the ALNY 401(k) matching contribution program.
F2 The stock option vested as to 25% of the shares on the 1st anniversary of the date of the stock option grant and as to an additional 6.25% of the shares each successive three month period thereafter.
F3 The stock option vested as to 25% of the shares on the 1st anniversary of the date of the stock option grant and as to the remaining shares ratably at the end of each three-month period thereafter over the following thirty-three (33) months.