MICHAEL W. BONNEY - 15 May 2025 Form 4 Insider Report for ALNYLAM PHARMACEUTICALS, INC. (ALNY)

Role
Director
Signature
By: Brett Budzinski, Attorney-in-Fact For: Michael W. Bonney
Issuer symbol
ALNY
Transactions as of
15 May 2025
Net transactions value
-$1,648,104
Form type
4
Filing time
19 May 2025, 16:17:09 UTC
Previous filing
12 May 2025
Next filing
19 Aug 2025

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
BONNEY MICHAEL W Director 675 WEST KENDALL STREET, HENRI A. TERMEER SQUARE, CAMBRIDGE By: Brett Budzinski, Attorney-in-Fact For: Michael W. Bonney 19 May 2025 0001219016

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction ALNY Common Stock Options Exercise $1,476,112 +11,250 +67% $131.21 28,054 15 May 2025 Direct F1
transaction ALNY Common Stock Sale $146,660 -549 -2% $267.14 27,505 15 May 2025 Direct F1, F2
transaction ALNY Common Stock Sale $195,780 -729 -2.7% $268.56 26,776 15 May 2025 Direct F1, F3
transaction ALNY Common Stock Sale $66,099 -245 -0.91% $269.79 26,531 15 May 2025 Direct F1, F4
transaction ALNY Common Stock Sale $117,094 -431 -1.6% $271.68 26,100 15 May 2025 Direct F1, F5
transaction ALNY Common Stock Sale $180,286 -660 -2.5% $273.16 25,440 15 May 2025 Direct F1, F6
transaction ALNY Common Stock Sale $241,448 -882 -3.5% $273.75 24,558 15 May 2025 Direct F1, F7
transaction ALNY Common Stock Sale $82,965 -301 -1.2% $275.63 24,257 15 May 2025 Direct F1, F8
transaction ALNY Common Stock Sale $350,053 -1,263 -5.2% $277.16 22,994 15 May 2025 Direct F1, F9
transaction ALNY Common Stock Sale $344,454 -1,239 -5.4% $278.01 21,755 15 May 2025 Direct F1, F10
transaction ALNY Common Stock Sale $120,973 -432 -2% $280.03 21,323 15 May 2025 Direct F1, F11
transaction ALNY Common Stock Sale $104,569 -372 -1.7% $281.10 20,951 15 May 2025 Direct F1, F12
transaction ALNY Common Stock Sale $226,188 -802 -3.8% $282.03 20,149 15 May 2025 Direct F1, F13
transaction ALNY Common Stock Sale $488,696 -1,728 -8.6% $282.81 18,421 15 May 2025 Direct F1, F14
transaction ALNY Common Stock Sale $458,953 -1,617 -8.8% $283.83 16,804 15 May 2025 Direct F1, F15
holding ALNY Common Stock 4,000 15 May 2025 by Trust F16

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 -11,250 -100% $0.000000 0 15 May 2025 Common Stock 11,250 $131.21 Direct F1, F17
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Buy Plan / Sale Plan: These are also open market purchases/sales of shares, but in this case the transaction is part of a trading plan. Rule 10b5-1 allows insiders to setup a trading plan to buy/sell stocks over a certain period of time. Since the purchases/sales are predetermined, this protects the insiders from violating insider trading law.

Transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c).

Explanation of Responses:

Id Content
F1 This transaction was made pursuant to a Rule 10b5-1(c) trading plan adopted by the Reporting Person on November 12, 2024. The 11,250 options exercised and sold by the reporting person were due to expire on June 1, 2025.
F2 The price reported represents the weighted average sales price of shares sold in multiple transactions at prices ranging from $266.87 to $267.72. The reporting person will provide to the issuer, any security holder of the issuer or the SEC staff, upon request, information regarding the number of shares sold at each price within the range.
F3 The price reported represents the weighted average sales price of shares sold in multiple transactions at prices ranging from $268.28 to $269.16. The reporting person will provide to the issuer, any security holder of the issuer or the SEC staff, upon request, information regarding the number of shares sold at each price within the range.
F4 The price reported represents the weighted average sales price of shares sold in multiple transactions at prices ranging from $269.53 to $269.88. The reporting person will provide to the issuer, any security holder of the issuer or the SEC staff, upon request, information regarding the number of shares sold at each price within the range.
F5 The price reported represents the weighted average sales price of shares sold in multiple transactions at prices ranging from $271.44 to $272.10. The reporting person will provide to the issuer, any security holder of the issuer or the SEC staff, upon request, information regarding the number of shares sold at each price within the range.
F6 The price reported represents the weighted average sales price of shares sold in multiple transactions at prices ranging from $272.60 to $273.59. The reporting person will provide to the issuer, any security holder of the issuer or the SEC staff, upon request, information regarding the number of shares sold at each price within the range.
F7 The price reported represents the weighted average sales price of shares sold in multiple transactions at prices ranging from $273.61 to $274.00. The reporting person will provide to the issuer, any security holder of the issuer or the SEC staff, upon request, information regarding the number of shares sold at each price within the range.
F8 The price reported represents the weighted average sales price of shares sold in multiple transactions at prices ranging from $275.11 to $276.05. The reporting person will provide to the issuer, any security holder of the issuer or the SEC staff, upon request, information regarding the number of shares sold at each price within the range.
F9 The price reported represents the weighted average sales price of shares sold in multiple transactions at prices ranging from $276.55 to $277.45. The reporting person will provide to the issuer, any security holder of the issuer or the SEC staff, upon request, information regarding the number of shares sold at each price within the range.
F10 The price reported represents the weighted average sales price of shares sold in multiple transactions at prices ranging from $277.77 to $278.43. The reporting person will provide to the issuer, any security holder of the issuer or the SEC staff, upon request, information regarding the number of shares sold at each price within the range.
F11 The price reported represents the weighted average sales price of shares sold in multiple transactions at prices ranging from $279.26 to $280.17. The reporting person will provide to the issuer, any security holder of the issuer or the SEC staff, upon request, information regarding the number of shares sold at each price within the range.
F12 The price reported represents the weighted average sales price of shares sold in multiple transactions at prices ranging from $280.38 to $281.37. The reporting person will provide to the issuer, any security holder of the issuer or the SEC staff, upon request, information regarding the number of shares sold at each price within the range.
F13 The price reported represents the weighted average sales price of shares sold in multiple transactions at prices ranging from $281.39 to $282.26. The reporting person will provide to the issuer, any security holder of the issuer or the SEC staff, upon request, information regarding the number of shares sold at each price within the range.
F14 The price reported represents the weighted average sales price of shares sold in multiple transactions at prices ranging from $282.40 to $283.37. The reporting person will provide to the issuer, any security holder of the issuer or the SEC staff, upon request, information regarding the number of shares sold at each price within the range.
F15 The price reported represents the weighted average sales price of shares sold in multiple transactions at prices ranging from $283.54 to $284.22. The reporting person will provide to the issuer, any security holder of the issuer or the SEC staff, upon request, information regarding the number of shares sold at each price within the range.
F16 The shares of ALNY common stock were purchased by the Michael W. Bonney Revocable Trust, of which the reporting person is trustee.
F17 The stock option was fully vested as of June 1, 2016.