Alector CEO receives 217,500-share stock grant
Exercising repriced eligible options before the Retention Period ends carries a premium equal to each option's original exercise price.
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Form Type
4
Rhea-AI Filing Summary
Alector, Inc. (ALEC) Chief Executive Officer Arnon Rosenthal reported a grant of 217,500 restricted stock units on October 14, 2026, bringing his reported direct common-stock holdings to 2,512,100 shares. The RSUs vest in 12 equal quarterly installments beginning December 1, 2026. He also reported 978,750 options granted at an exercise price of $1.88 per share, vesting in 48 equal monthly installments beginning November 13, 2026.
A one-time repricing effective October 13, 2026 applied to options with exercise prices above $1.87 held by continuing employees; the reported repriced options were amended to an exercise price of $1.87 per share. Exercising a repriced eligible option before the Retention Period ends requires a premium equal to its original exercise price.
Insider Trade Summary
20 transactions reported
Mixed
20 txns
Insider
Rosenthal Arnon
Role
Chief Executive Officer
| Type | Security | Shares | Price | Value |
|---|---|---|---|---|
| Grant/Award | Employee Stock Option (right to buy) F10 | 978,750 | $0.00 | $0.00 |
| Grant/Award | Common Stock F1 | 217,500 | $0.00 | $0.00 |
| Disposition | Employee Stock Option (right to buy) F7, F8, F6 | 500,000 | -- | -- |
| Grant/Award | Employee Stock Option (right to buy) F7, F8, F6 | 500,000 | -- | -- |
| Disposition | Employee Stock Option (right to buy) F7, F8, F6 | 275,000 | -- | -- |
| Grant/Award | Employee Stock Option (right to buy) F7, F8, F6 | 275,000 | -- | -- |
| Disposition | Employee Stock Option (right to buy) F7, F8, F6 | 520,000 | -- | -- |
| Grant/Award | Employee Stock Option (right to buy) F7, F8, F6 | 520,000 | -- | -- |
| Disposition | Employee Stock Option (right to buy) F7, F8, F6 | 457,038 | -- | -- |
| Grant/Award | Employee Stock Option (right to buy) F7, F8, F6 | 457,038 | -- | -- |
| Disposition | Employee Stock Option (right to buy) F7, F8, F6 | 417,213 | -- | -- |
| Grant/Award | Employee Stock Option (right to buy) F7, F8, F6 | 417,213 | -- | -- |
| Disposition | Employee Stock Option (right to buy) F7, F8, F6 | 119,446 | -- | -- |
| Grant/Award | Employee Stock Option (right to buy) F7, F8, F6 | 119,446 | -- | -- |
| Disposition | Employee Stock Option (right to buy) F7, F8, F9 | 132,500 | -- | -- |
| Grant/Award | Employee Stock Option (right to buy) F7, F8, F9 | 132,500 | -- | -- |
| holding | Common Stock F2 | -- | -- | -- |
| holding | Common Stock F3 | -- | -- | -- |
| holding | Common Stock F4 | -- | -- | -- |
| holding | Common Stock F5 | -- | -- | -- |
Holdings After Transaction:
Employee Stock Option (right to buy) — 3,399,947 contracts (Direct);
Common Stock — 2,512,100 shares (Direct);
Common Stock — 3,930,375 shares (Indirect, See footnote)
Footnotes (10)
- F1. The reported shares are represented by restricted stock units, or RSUs, which vest in 12 equal quarterly installments beginning on December 1, 2026.
- F2. The reported securities are held directly by The Rosenthal Family Revocable Trust Dated November 4, 1994, as restated on June 9, 1999, for which the Reporting Person serves as trustee.
- F3. The reported securities are held directly by the Adi Rosenthal 2007 Trust dated March 27, 2007, for which the Reporting Person serves as trustee.
- F4. The reported securities are held directly by the Noam Rosenthal 2007 Trust dated March 27, 2007, for which the Reporting Person serves as trustee.
- F5. The reported securities are held directly by the Shani Rosenthal 2007 Trust dated March 27, 2007, for which the Reporting Person serves as trustee.
- F6. The shares subject to the option are fully vested and immediately exercisable.
- F7. The transactions reported herein reflect a one-time stock option repricing (the "Option Repricing") effective on October 13, 2026 (the "Effective Date"). The Option Repricing applies to stock options with exercise prices greater than $1.87 per share held by all continuing employees of the Issuer as of the Effective Date.
- F8. Pursuant to the Option Repricing, the exercise price of the repriced options, including the reported option, has been amended to reduce the exercise price to $1.87 per share, the closing price of the Issuer's common stock on the Effective Date. However, if an employee exercises a repriced Eligible Option before the end of a "Retention Period" that begins on the Effective Date of the Option Repricing and ends on the earliest to occur of the following: (i) one year following the Effective Date; (ii) a Change in Control, as defined in the Issuer's 2019 Equity Incentive Plan, as amended (the "2019 Plan"); and (iii) the optionholder's death or Disability (as defined in the 2019 Plan), then the employee will be required to pay a premium exercise price that is equal to the original exercise price per share of such option. There was no change to the vesting schedules, expiration dates or number of shares underlying the repriced options.
- F9. Shares subject to the option vest in 48 equal monthly installments beginning on November 1, 2023.
- F10. Shares subject to the option vest in 48 equal monthly installments beginning on November 13, 2026.
Key Figures
Restricted stock units: 217,500 shares
Direct common-stock holdings: 2,512,100 shares
Option grant: 978,750 options
+4 more
7 metrics
Restricted stock units
217,500 shares
Granted October 14, 2026
Direct common-stock holdings
2,512,100 shares
Reported following the October 14, 2026 award
Option grant
978,750 options
Granted October 14, 2026
Option exercise price
$1.88 per share
For the 978,750 options granted October 14, 2026
Repriced option exercise price
$1.87 per share
Amended effective October 13, 2026
RSU vesting schedule
12 equal quarterly installments
Beginning December 1, 2026
Option vesting schedule
48 equal monthly installments
For the October 14, 2026 option grant, beginning November 13, 2026
Key Terms
restricted stock units, Retention Period, premium exercise price, Option Repricing
4 terms
restricted stock units financial
"represented by restricted stock units, or RSUs"
Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.
Retention Period financial
"before the end of a "Retention Period""
Option Repricing technical
"one-time stock option repricing (the "Option Repricing")"
FAQ
AI-generated questions and answers. How Rhea-AI works. Not financial advice.
How many RSUs did ALEC CEO Arnon Rosenthal receive?
Arnon Rosenthal received 217,500 restricted stock units on October 14, 2026. The award vests in 12 equal quarterly installments beginning December 1, 2026, and his reported direct common-stock holdings after the award were 2,512,100 shares.
What changed in ALEC's option repricing?
The one-time repricing amended the exercise price of the reported repriced options to $1.87 per share. For a repriced eligible option exercised before the Retention Period ends, the employee must pay a premium equal to the option's original exercise price. The Retention Period begins October 13, 2026 and ends at the earliest of one year after that date, a Change in Control, or the optionholder's death or Disability.
When do Arnon Rosenthal's new ALEC options expire?
The 978,750 options granted to Arnon Rosenthal expire on October 13, 2036.
AI-generated analysis. How Rhea-AI works. Not financial advice.
