ALNYLAM PHARMACEUTICALS, INC.

ALNY

Form 4 • Statement of Changes in Beneficial Ownership

SEC Accession Number: 0001735276-26-000049
Filing date: Mar 4, 2026
Earliest execution date: Mar 2, 2026

Summary

Type

Neutral

Net shares

+1,539

% of shares

11.81%

Amount (USD)

$0

Insider confidence score

90.0 out of 100

Positive

  • Massive buy (≥10% of shares)

Negative

  • Minimal buy amount (<$10K)

Stock transactions

Transaction 1

Security

Common Stock

Action

Grant

Date

2026-03-02

Code

A

Net shares

+1,539.0

Acquired/Disposed

Acquired

Shares Owned Before

13,026.0

Shares Owned After

14,565.0

Derivative Transactions

Transaction 1

Security

Stock Option (right to buy)

Action

Grant

Date

2026-03-02

Code

A

Net shares

+3,381.0

Acquired/Disposed

Acquired

Shares Owned Before

0.0

Shares Owned After

3,381.0

Filing's footnotes

1. These shares are represented by restricted stock units (RSUs) granted under the Second Amended and Restated 2018 Stock Incentive Plan. Each RSU represents a contingent right to receive one share of common stock. The RSUs will vest over a three-year period, with one third vesting on each of the first, second and third anniversaries of the grant date, subject to the Reporting Persons continuous service with the Issuer as of each such vesting date.

2. The stock option vests as to 25% of the shares on the first anniversary of the grant date and the remaining shares vest in equal installments at the end of each successive three-month period thereafter until the fourth anniversary of the grant date, subject to the Reporting Persons continuous service with the Issuer as of each such vesting date.

This page is for informational purposes only. While we strive for accuracy, the summary may contain inaccuracies or omissions. Please refer to the official SEC filing for authoritative information. Open the SEC filing.