STOCK TITAN

ALNY (ALNY) director Dennis Ausiello granted RSUs and stock options awards

Filing Impact
(Neutral)
Filing Sentiment
(Neutral)
Form Type
4

Rhea-AI Filing Summary

ALNYLAM PHARMACEUTICALS, INC. director Dennis A. Ausiello reported equity awards and updated holdings. He received a grant of 671 restricted stock units, each representing one future share of common stock, which will vest in full on the first anniversary of the grant date or upon certain earlier retirement or resignation conditions. He was also granted stock options on 1,441 shares at an exercise price of $298.48 per share, with the option vesting on the same schedule. Following these awards, he holds 1,582 shares of common stock directly, 1,441 stock options directly, and 3,500 shares of common stock indirectly through a trust for which his spouse is trustee.

Positive

  • None.

Negative

  • None.
Insider Ausiello Dennis A
Role null
Type Security Shares Price Value
Grant/Award Stock Option (Right to Buy) 1,441 $0.00 --
Grant/Award Common Stock 671 $0.00 --
holding Common Stock -- -- --
Holdings After Transaction: Stock Option (Right to Buy) — 1,441 shares (Direct, null); Common Stock — 1,582 shares (Direct, null); Common Stock — 3,500 shares (Indirect, by Trust)
Footnotes (1)
  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 in full upon the earlier of the first anniversary of the grant date and the date of any earlier retirement or resignation of the Reporting Person, provided such date of retirement or resignation occurs no more than 90 days prior to the first anniversary of the grant date. The shares of ALNY common stock are held in a trust, of which the reporting person's spouse is the trustee. The stock option will vest in full upon the earlier of the first anniversary of the grant date and the date of any earlier retirement or resignation of the Reporting Person, provided such date of retirement or resignation occurs no more than 90 days prior to the first anniversary of the grant date.
RSU grant 671 units Restricted stock units granted under 2018 Stock Incentive Plan
Stock options granted 1,441 shares Option grant on common stock
Option exercise price $298.48/share Conversion or exercise price for new stock options
Direct common shares after award 1,582 shares Total direct common stock ownership following transactions
Indirect trust holdings 3,500 shares Common stock held in a trust where spouse is trustee
Option expiration May 20, 2036 Expiration date for granted stock options
Option vesting reference date First anniversary of grant Full vesting date trigger for stock options
restricted stock units (RSUs) financial
"These shares are represented by restricted stock units (RSUs) granted under the Second Amended and Restated 2018 Stock Incentive Plan."
Restricted stock units (RSUs) are a type of company promise to give employees shares of stock in the future, usually after certain conditions like working for a set time. They are like a gift promised today that you receive later, which can become valuable if the company's stock price goes up. RSUs matter because they are a way companies reward employees and can be a significant part of compensation.
Stock Option (Right to Buy) financial
"security_title: Stock Option (Right to Buy)"
exercise price financial
"conversion_or_exercise_price: 298.4800"
The exercise price is the fixed amount at which you can buy or sell an asset, like a stock, when using an options contract. It matters because it helps determine whether exercising the option will be profitable or not, depending on the current market price. Think of it as the set price you agree on today to buy or sell later.
Second Amended and Restated 2018 Stock Incentive Plan financial
"RSUs granted under the Second Amended and Restated 2018 Stock Incentive Plan."
indirect ownership financial
"The shares of ALNY common stock are held in a trust, of which the reporting person's spouse is the trustee."
SEC Form 4
FORM 4UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number:3235-0287
Estimated average burden
hours per response:0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
Check this box to indicate that a 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). See Instruction 10.
1. Name and Address of Reporting Person*
Ausiello Dennis A

(Last)(First)(Middle)
675 WEST KENDALL STREET

(Street)
CAMBRIDGE MASSACHUSETTS 02142

(City)(State)(Zip)

UNITED STATES

(Country)
2. Issuer Name and Ticker or Trading Symbol
ALNYLAM PHARMACEUTICALS, INC. [ ALNY ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
XDirector10% Owner
Officer (give title below)Other (specify below)
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
05/20/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year)2A. Deemed Execution Date, if any (Month/Day/Year)3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeVAmount(A) or (D)Price
Common Stock05/20/2026A671(1)A$01,582D
Common Stock3,500Iby Trust(2)
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year)3A. Deemed Execution Date, if any (Month/Day/Year)4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year)7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Stock Option (Right to Buy)$298.4805/20/2026A1,44105/20/2027(3)05/20/2036Common Stock1,441$01,441D
Explanation of Responses:
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 in full upon the earlier of the first anniversary of the grant date and the date of any earlier retirement or resignation of the Reporting Person, provided such date of retirement or resignation occurs no more than 90 days prior to the first anniversary of the grant date.
2. The shares of ALNY common stock are held in a trust, of which the reporting person's spouse is the trustee.
3. The stock option will vest in full upon the earlier of the first anniversary of the grant date and the date of any earlier retirement or resignation of the Reporting Person, provided such date of retirement or resignation occurs no more than 90 days prior to the first anniversary of the grant date.
Brett Budzinski, Attorney-in-Fact For: Dennis A. Ausiello05/22/2026
** Signature of Reporting PersonDate
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

FAQ

What did ALNY director Dennis Ausiello acquire in this Form 4 filing?

Dennis Ausiello acquired equity awards, not open-market shares. He received 671 restricted stock units and stock options on 1,441 shares at a $298.48 exercise price, all as compensation grants rather than purchases or sales in the market.

How many ALNY common shares does Dennis Ausiello hold after these transactions?

After these transactions, Dennis Ausiello holds 1,582 ALNY common shares directly. In addition, 3,500 ALNY common shares are held indirectly in a trust where his spouse serves as trustee, as disclosed in the filing’s ownership footnote.

What are the terms of Dennis Ausiello’s new ALNY stock options?

The new stock options cover 1,441 shares of ALNY common stock at an exercise price of $298.48 per share. They vest in full on the earlier of the first anniversary of the grant date or certain qualifying retirement or resignation events.

How do the ALNY restricted stock units granted to Dennis Ausiello vest?

The 671 restricted stock units vest in full on the first anniversary of the grant date, or earlier if Dennis Ausiello retires or resigns within 90 days before that anniversary, subject to the conditions described in the company’s 2018 Stock Incentive Plan.

Are any of Dennis Ausiello’s ALNY shares held indirectly through a trust?

Yes. The filing states that 3,500 ALNY common shares are held in a trust where Dennis Ausiello’s spouse is the trustee. These are reported as indirect ownership, separate from his directly held shares and option awards.