Tolga Tanguler - 04 Mar 2026 Form 4 Insider Report for ALNYLAM PHARMACEUTICALS, INC. (ALNY)

Reporting relationship: EVP, Chief Commercial Officer
Issuer ticker: ALNY
Reported as of: 04 Mar 2026
Net transaction value: -$745,984
SEC form: 4
Accepted by SEC: 06 Mar 2026, 16:12:15 UTC
Prior SEC filing: 04 Mar 2026
Next SEC filing: 29 Jun 2026
Source filing: View source filing
Reporting owner signature: By: Brett Budzinski, Attorney-in-Fact For: Tolga Tanguler

Key filing fact

Tolga Tanguler filed Form 4 for ALNYLAM PHARMACEUTICALS, INC. (ALNY) on 06 Mar 2026.

Key facts

This page summarizes Tolga Tanguler's Form 4 filing for ALNYLAM PHARMACEUTICALS, INC. (ALNY).
8 reported transactions and 0 derivative rows are listed below.
Accepted by SEC: 06 Mar 2026, 16:12.

Change

Previous filing in this sequence was filed on 04 Mar 2026.
Current net transaction value: -$745,984.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001849458 Primary reporting owner

Tanguler Tolga

Relationship: EVP, Chief Commercial Officer
Address: 675 WEST KENDALL STREET, HENRI A. TERMEER SQUARE, CAMBRIDGE
Signature: By: Brett Budzinski, Attorney-in-Fact For: Tolga Tanguler
Signature date: 06 Mar 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

ALNY transaction

Common Stock

Sale

Transaction value: $33,817
Shares: -106
Change %: -0.29%
Price: $319.03
Shares after: 36,500
Date: 04 Mar 2026
Ownership: Direct
Footnotes: F1, F2

ALNY transaction

Common Stock

Sale

Transaction value: $32,641
Shares: -102
Change %: -0.28%
Price: $320.01
Shares after: 36,398
Date: 04 Mar 2026
Ownership: Direct
Footnotes: F1, F3

ALNY transaction

Common Stock

Sale

Transaction value: $68,974
Shares: -215
Change %: -0.59%
Price: $320.81
Shares after: 36,183
Date: 04 Mar 2026
Ownership: Direct
Footnotes: F1, F4

ALNY transaction

Common Stock

Sale

Transaction value: $93,006
Shares: -289
Change %: -0.8%
Price: $321.82
Shares after: 35,894
Date: 04 Mar 2026
Ownership: Direct
Footnotes: F1, F5

ALNY transaction

Common Stock

Sale

Transaction value: $113,054
Shares: -350
Change %: -0.98%
Price: $323.01
Shares after: 35,544
Date: 04 Mar 2026
Ownership: Direct
Footnotes: F1, F6

ALNY transaction

Common Stock

Sale

Transaction value: $248,385
Shares: -767
Change %: -2.2%
Price: $323.84
Shares after: 34,777
Date: 04 Mar 2026
Ownership: Direct
Footnotes: F1, F7

ALNY transaction

Common Stock

Sale

Transaction value: $88,367
Shares: -272
Change %: -0.78%
Price: $324.88
Shares after: 34,505
Date: 04 Mar 2026
Ownership: Direct
Footnotes: F1, F8

ALNY transaction

Common Stock

Sale

Transaction value: $67,739
Shares: -208
Change %: -0.6%
Price: $325.67
Shares after: 34,297
Date: 04 Mar 2026
Ownership: Direct
Footnotes: F1, F9

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 9 footnotes

Footnote F1

Represents shares automatically sold by the Company on behalf of the reporting person pursuant to a mandatory sell-to-cover provision in the award agreement to cover minimum statutory tax withholding obligations upon the vesting of restricted stock units.

Footnote F2

The price reported represents the weighted average sales price of shares sold in multiple transactions at prices ranging from $318.27 to $319.27. 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.

Footnote F3

The price reported represents the weighted average sales price of shares sold in multiple transactions at prices ranging from $319.28 to $320.28. 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.

Footnote F4

The price reported represents the weighted average sales price of shares sold in multiple transactions at prices ranging from $320.33 to $321.33. 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.

Footnote F5

The price reported represents the weighted average sales price of shares sold in multiple transactions at prices ranging from $321.34 to $322.31. 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.

Footnote F6

The price reported represents the weighted average sales price of shares sold in multiple transactions at prices ranging from $322.36 to $323.36. 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.

Footnote F7

The price reported represents the weighted average sales price of shares sold in multiple transactions at prices ranging from $323.38 to $324.35. 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.

Footnote F8

The price reported represents the weighted average sales price of shares sold in multiple transactions at prices ranging from $324.39 to $325.38. 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.

Footnote F9

The price reported represents the weighted average sales price of shares sold in multiple transactions at prices ranging from $325.40 to $326.21. 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.