Transaction #8549 · Form 4 · 0001735276-25-000120
ALNYLAM PHARMACEUTICALS, INC. · Exercise / conversion · Common Stock
ALNYLAM PHARMACEUTICALS, INC. · Transacted November 13, 2025 · Filed November 14, 2025
What does this filing report?
An SEC Form 4 filing for ALNYLAM PHARMACEUTICALS, INC. records an exercise / conversion involving Common Stock on November 13, 2025. The reported quantity was 10,000. The filing date is November 14, 2025. This is one transaction record; amounts are not allocated among any joint reporting owners.
The acquisition category describes how securities were received. It does not by itself establish a cash purchase of common stock. Read the transaction code definitionsand the original filing before interpreting the amounts.
Transaction details
- Company CIK
- 0001178670
- Security type
- Non-derivative
- Acquisition type
- Exercise / conversion · Code M
- Quantity acquired
- 10,000
- Reported price
- 119.13
- Reference value
- 1,191,300
- Currency
- Currency not specified
- Ownership
- Direct
- Holdings after transaction
- 75,409
- Ownership description
- Not reported
- SEC acceptance time
- Nov 14, 2025, 4:13 PM EST
- 10b5-1 indication
- Indicated in filing
Reference value is reported quantity × reported price. It is not a confirmed cash payment or an estimate of a derivative's economic value. A missing currency is not assumed to be USD.
Reporting owners
- Greenstreet Yvonne ↗
Chief Executive Officer · Director
CIK 0001446125
These are the reporting owners named in the filing. Quantities and amounts are not allocated among co-reporters. Roles reflect this filing, not a current profile.
Company listings
ALNY · Nasdaq · linked security
The linked listing is identified separately from other current company listings.
Filing footnotes & remarks
- F1
- The transactions reported on this Form 4 were made pursuant to a Rule 10b5-1(c) trading plan adopted by the reporting person on August 13, 2025.
- F2
- The price reported represents the weighted average sales price of shares sold in multiple transactions at prices ranging from $447.67 to $448.67. 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 $448.69 to $449.69. 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 $449.72 to $450.64. 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 $450.75 to $451.55. 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 $451.95 to $452.89. 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 $453.14 to $454.11. 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 $454.16 to $455.16. 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.
- F9
- The price reported represents the weighted average sales price of shares sold in multiple transactions at prices ranging from $455.17 to $456.15. 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 $456.22 to $457.19. 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 $457.24 to $458.06. 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 $458.37 to $458.56. 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 $447.30 to $448.24. 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 $448.38 to $449.31. 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 $449.50 to $450.50. 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 price reported represents the weighted average sales price of shares sold in multiple transactions at prices ranging from $450.56 to $451.50. 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.
- F17
- The price reported represents the weighted average sales price of shares sold in multiple transactions at prices ranging from $451.60 to $452.31. 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.
- F18
- The price reported represents the weighted average sales price of shares sold in multiple transactions at prices ranging from $452.51 to $453.50. 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.
- F19
- The price reported represents the weighted average sales price of shares sold in multiple transactions at prices ranging from $453.55 to $454.46. 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.
- F20
- 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.
- F21
- This stock option was fully vested and exercisable as of August 6, 2019.
- F22
- This stock option was fully vested and exercisable as of February 11, 2021.
Footnotes are reproduced as plain text from the current source filing. For the full context, read the original SEC filing.
This record was updated Eastern Time. This is the stored record update time, not the transaction date. Report a correction.