Alnylam director receives RSU and option grants
ALNYLAM PHARMACEUTICALS, INC. director Stuart A. Arbuckle received equity awards on May 20, 2026.
Rhea-AI Filing Summary
ALNYLAM PHARMACEUTICALS, INC. director Stuart A. Arbuckle received equity awards on May 20, 2026. He was granted 671 restricted stock units, each representing one share of common stock, and a stock option for 1,441 shares at an exercise price of $298.48 per share. Both the RSUs and the option vest in full on the earlier of the first anniversary of the grant date or an earlier retirement or resignation that occurs no more than 90 days before that anniversary. Following these awards, Arbuckle holds 671 common shares and a vested-over-time option covering 1,441 underlying shares.
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Insider Trade Summary
Grant/Award: 2,112 shares
Grant/Award
2 txns
Insider
Arbuckle Stuart A
Role
Director
| Type | Security | Shares | Price | Value |
|---|---|---|---|---|
| Grant/Award | Stock Option (Right to Buy) | 1,441 | $0.00 | $0.00 |
| Grant/Award | Common Stock | 671 | $0.00 | $0.00 |
Holdings After Transaction:
Stock Option (Right to Buy) — 1,441 contracts (Direct);
Common Stock — 671 shares (Direct)
Footnotes (2)
- F1. 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.
- F2. 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.
Key Figures
RSU grant size: 671 RSUs
Option grant size: 1,441 shares
Option exercise price: $298.48/share
+3 more
6 metrics
RSU grant size
671 RSUs
Restricted stock units granted May 20, 2026
Option grant size
1,441 shares
Underlying common stock for new option grant
Option exercise price
$298.48/share
Conversion or exercise price for stock option
Option expiration
May 20, 2036
Expiration date of stock option grant
Shares held after grant
671 shares
Total common shares following RSU award
RSU vesting trigger
1-year anniversary or qualifying exit
Earlier of first anniversary or retirement/resignation within 90 days
Key Terms
restricted stock units (RSUs), Second Amended and Restated 2018 Stock Incentive Plan, Stock Option (Right to Buy), vest in full, +1 more
5 terms
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.
Second Amended and Restated 2018 Stock Incentive Plan financial
"These shares are represented by restricted stock units (RSUs) granted under the Second Amended and Restated 2018 Stock Incentive Plan."
Stock Option (Right to Buy) financial
"The stock option will vest in full upon the earlier of the first anniversary of the grant date..."
vest in full financial
"The RSUs will vest in full upon the earlier of the first anniversary of the grant date..."
contingent right financial
"Each RSU represents a contingent right to receive one share of common stock."
FAQ
AI-generated questions and answers. How Rhea-AI works. Not financial advice.
What equity awards did ALNY director Stuart A. Arbuckle receive on this Form 4?
Stuart A. Arbuckle received 671 restricted stock units and a stock option for 1,441 shares of Alnylam common stock. Both awards were granted on May 20, 2026 as part of his director compensation package.
How do the new RSUs for ALNY director Stuart A. Arbuckle vest?
The 671 RSUs vest in full on the earlier of the first anniversary of the May 20, 2026 grant date or Arbuckle’s retirement or resignation, provided that occurs no more than 90 days before that first anniversary, according to the award terms.
What are the key terms of Stuart A. Arbuckle’s ALNY stock option grant?
Arbuckle’s stock option covers 1,441 shares of Alnylam common stock at an exercise price of $298.48 per share. It vests in full on the earlier of the first anniversary of the grant date or qualifying retirement/resignation and expires on May 20, 2036.
Under which plan were Stuart A. Arbuckle’s ALNY equity awards granted?
The restricted stock units granted to Arbuckle are issued under Alnylam’s Second Amended and Restated 2018 Stock Incentive Plan. Each RSU represents a contingent right to receive one share of common stock once the vesting conditions are satisfied as described in the award terms.
What are Stuart A. Arbuckle’s holdings after the reported ALNY transactions?
After these awards, Arbuckle directly holds 671 shares of Alnylam common stock from the RSUs and a stock option covering 1,441 underlying shares. These positions reflect his equity-based compensation and potential future ownership if the option is exercised.
AI-generated analysis. How Rhea-AI works. Not financial advice.
