Transaction · 0001193125-26-361376

Rosenthal Arnon

Rosenthal Arnon, CEO, reported a transaction classified as gift at Alector, Inc. involving 350000.000000 shares for an estimated $0.00. Reported holdings after the transaction were 1002500.000000 shares. A 10b5-1 reference was not detected in the stored filing text.

giftSEC transaction code GCEO
ALECAlector, Inc.
Trade date
Aug 19, 2026
Filing date
Aug 21, 2026
View on SEC Insider profile
Estimated value$0Shares × reported price
Shares traded350k$0.00 per share
Holdings after1.00MIndirect · See footnote
% of reported position tradedUnavailableThis security and ownership context
How reported position traded is calculated

Calculated only for code-P purchases and code-S sales.

Row-level estimate for this security and ownership context, not the insider’s complete portfolio. Joint ownership, other transactions in the filing, amendments and footnotes can affect interpretation.

ALEC price since this filing

Daily closing prices, with the filing date and available return windows
ALEC · Daily closing priceLoading daily prices…
Filing dateReturn windows appear as prices become available.
Pre-filing1mo ago -39.4%1w ago -8.9%1d ago -6.4%
Returns since7d -0.8%30d -19.1%90d180d1y

Transaction facts

Stored Form 4 columns with their raw values

Non-derivative
Type
gift
Code G
Identifier
0001193125-26-361376
Common Stock
Transaction date
Aug 19, 2026
Filed Aug 21, 2026, 10:00 PM · 2d delay
Shares
350,000 sh
$0.00 per share
Estimated value
$0
Computed from shares × price
Holdings after
1,002,500 sh
Indirect · See footnote

Filing signal explanations

Badges describe filing facts only — not predictions.

Cluster 14dRepeat 30dPattern $100kLarge $1.00M
Large Holdings Increase
Filing-only score

-12 points

Compact filing score computed from stored Form 4 facts. Version v1.

Mixed or weak signal

This filing has a negative filing-only score. It may be less informative as an insider-activity signal and needs extra context.

How this score is calculated
  • timely_filing+4 points

    reporting_delay_days = 2

    Filing reported within two business days of the transaction.
  • gift-16 points

    transaction_code = G

    Gift transactions are not market activity.
Read the scoring methodology

Signed filing-only points, not a probability or expected return. Version v1.

Reported relationships & other filings

Form 4 relationship flags and nearby filing context

Reported roles

Chief Executive Officer

Officer YesDirector Yes10% NoOther No
Footnotes & amended
  1. F1

    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.

  2. F2

    The reported securities are held directly by the Adi Rosenthal 2007 Trust dated March 27, 2007, for which the Reporting Person serves as trustee.

  3. F3

    The reported securities are held directly by the Noam Rosenthal 2007 Trust dated March 27, 2007, for which the Reporting Person serves as trustee.

  4. F4

    The reported securities are held directly by the Shani Rosenthal 2007 Trust dated March 27, 2007, for which the Reporting Person serves as trustee.

Original filing · 0001193125-26-361376
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