STOCK TITAN

Director Peter Kellogg granted RSUs and stock options at Alnylam (NASDAQ: ALNY)

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

Rhea-AI Filing Summary

ALNYLAM PHARMACEUTICALS, INC. director Peter N. Kellogg reported equity awards as part of his compensation. He received 671 restricted stock units, each representing one share of common stock, and 1,441 stock options with an exercise price of $298.48 per share.

The RSUs and options will each vest in full on the earlier of the first anniversary of the May 20, 2026 grant date or his earlier retirement or resignation, if that occurs no more than 90 days before the first anniversary. After the RSU grant, he directly holds 1,446 common shares and 1,441 stock options.

Positive

  • None.

Negative

  • None.
Insider KELLOGG PETER N
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 --
Holdings After Transaction: Stock Option (Right to Buy) — 1,441 shares (Direct, null); Common Stock — 1,446 shares (Direct, null)
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 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.
RSUs granted 671 units Restricted stock units granted to director on May 20, 2026
Options granted 1,441 options Stock Option (Right to Buy) granted on May 20, 2026
Option exercise price $298.48 per share Exercise price for 1,441 stock options
Shares held after RSU grant 1,446 shares Total common stock directly held following RSU award
Options outstanding after grant 1,441 options Total stock options directly held following grant
Option expiration 2036-05-20 Expiration date of granted stock options
Option vesting trigger First anniversary or earlier qualifying departure Vesting condition 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
"Stock Option (Right to Buy) with an exercise price of 298.4800 and expiration date in 2036."
Second Amended and Restated 2018 Stock Incentive Plan financial
"RSUs granted under the Second Amended and Restated 2018 Stock Incentive Plan."
exercise price financial
"conversion_or_exercise_price: 298.4800 for the stock option grant."
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.
expiration date financial
"The stock option has an expiration date of 2036-05-20."
The expiration date is the deadline after which a financial contract, such as an option or a futures agreement, is no longer valid or can be exercised. It matters to investors because it determines the timeframe during which they can take action or benefit from the contract, similar to how a coupon or a food item has a limited period of usefulness. Once the expiration date passes, the contract loses its value or ability to be used.
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*
KELLOGG PETER N

(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$01,446D
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(2)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 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: Peter N. Kellogg05/22/2026
** 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 insider transaction did ALNY director Peter N. Kellogg report?

Peter N. Kellogg reported receiving equity awards from Alnylam. He was granted 671 restricted stock units and 1,441 stock options as compensation, rather than buying shares on the open market, according to the Form 4 disclosure.

How many Alnylam (ALNY) RSUs did Peter Kellogg receive in this filing?

Peter Kellogg received 671 restricted stock units (RSUs). Each RSU represents a contingent right to one Alnylam common share, subject to vesting conditions tied to time and potential retirement or resignation as described in the award terms.

What are the terms of Peter Kellogg’s new Alnylam stock options?

Kellogg was granted 1,441 stock options with an exercise price of $298.48 per share. The options vest in full on the earlier of the first anniversary of the grant date or qualifying retirement or resignation, and expire in 2036.

When do Peter Kellogg’s Alnylam RSUs vest?

The 671 RSUs will vest in full on the earlier of the first anniversary of the grant date or the date of any earlier retirement or resignation, provided that retirement or resignation occurs no more than 90 days before that first anniversary.

How many Alnylam shares does Peter Kellogg hold after this Form 4?

After the reported grant, Kellogg directly holds 1,446 shares of common stock. He also holds 1,441 stock options that, if exercised in the future, would allow him to buy additional shares at the specified exercise price.

Under which plan were Peter Kellogg’s Alnylam equity awards granted?

The RSUs were granted under Alnylam’s Second Amended and Restated 2018 Stock Incentive Plan. This plan is used to provide equity-based compensation, aligning directors’ interests with shareholders through stock and option awards subject to vesting.