ALNY insider files Form 144 to sell RSU shares

ALNY affiliate submitted a Form 144 notice of proposed sales of company common stock derived from restricted stock units.

Rhea-AI Filing Summary

ALNY affiliate submitted a Form 144 notice of proposed sales of company common stock derived from restricted stock units. The filing lists proposed RSU sales of 847 shares on 02/27/2026 and 805 shares on 03/02/2026. The filing also reports prior dispositions by Kevin Fitzgerald of 2,290 shares on 01/13/2026 for $848,062.57 and 2,041 shares on 02/17/2026 for $677,531.58.

Insights

Insider Filing Analyst

Form 144 lists small RSU-based sales and recent insider dispositions.

The filing records proposed sales of 847 and 805 RSU-derived shares dated 02/27/2026 and 03/02/2026, respectively, and prior sales by Kevin Fitzgerald of 2,290 and 2,041 shares on 01/13/2026 and 02/17/2026 with the dollar amounts shown.

These entries are routine affiliate notices required under securities rules; cash-flow treatment is to the selling persons and the broker is identified as UBS Financial Services, Inc. Timing and any remaining planned sales beyond the dates shown are not specified in the excerpt.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What does ALNY Form 144 say about proposed RSU sales?

The form lists proposed sales of 847 RSU-derived shares on 02/27/2026 and 805 RSU-derived shares on 03/02/2026, indicating planned dispositions by an affiliate.

Who reported recent stock sales in the ALNY Form 144?

Kevin Fitzgerald reported dispositions of 2,290 shares on 01/13/2026 for $848,062.57 and 2,041 shares on 02/17/2026 for $677,531.58.

Which broker is listed on the ALNY Form 144 filing?

The filing identifies UBS Financial Services, Inc. at 11 Madison Ave, New York, NY as the broker-dealer involved in the proposed transactions.

Do the Form 144 entries show the timing of sales?

Yes; the excerpt shows specific dates: proposed RSU sales on 02/27/2026 and 03/02/2026, and prior sales on 01/13/2026 and 02/17/2026.

Are the dollar amounts for prior sales provided in the filing?

Yes; the prior dispositions by Kevin Fitzgerald list proceeds of $848,062.57 for 01/13/2026 and $677,531.58 for 02/17/2026 alongside share counts.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 03/03/2026 - 04:49 PM Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001886431
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	ALNYLAM PHARMACEUTICALS, INC.
SEC File Number	001-36407
Address of Issuer	675 WEST KENDALL STREET HENRI A. TERMEER SQUARE CAMBRIDGE MASSACHUSETTS 02142
Phone	(617) 551-8200
Name of Person for Whose Account the Securities are To Be Sold	Fitzgerald Kevin Joseph
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Officer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	UBS Financial Services, Inc. 11 Madison Ave 4th Floor New York NY 10010	1652	530903.24	132623144	03/03/2026	Nasdaq

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	02/27/2026	RSU	Issuer			847	02/27/2026	NA
Common	03/02/2026	RSU	Issuer			805	03/02/2026	NA

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
Kevin Fitzgerald 675 WEST KENDALL STREET HENRI A. TERMEER SQUARE CAMBRIDGE MA 02142	Common	01/13/2026	2290	848062.57
Kevin Fitzgerald 675 WEST KENDALL STREET HENRI A. TERMEER SQUARE CAMBRIDGE MA 02142	Common	02/17/2026	2041	677531.58

144: Remarks and Signature

Remarks
Date of Notice	03/03/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	08/14/2025
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ UBS Financial Services Inc, as attorney-in-fact for Kevin Fitzgerald
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)