A Central Index Key (CIK) is a unique identifier assigned by the SEC to each filer.

Why are some filings missing?

New filings appear as the SEC updates EDGAR, and older records can vary by availability.

How often is this page updated?

Updates follow new EDGAR submissions and periodic data refreshes.

Filer Snapshot

Arnon Rosenthal

CIK 0001757770. SEC filing timeline plus parsed ownership intelligence from 13F, 13D/G, and Forms 3/4/5 where available.

Entity Type

Individual

Total Filings

Latest Filing

13 Mar 2026

Industry

n/a

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Open 13F if you want portfolio holdings.
Open 13D/G or insider pages only when this CIK has those rows.

Open reporting owner context

Source: SEC Forms 3/4/5

4 filed on 13 Mar 2026 for CIK 0001757770.

View Source Filing

Business address: C/O Alector, Inc., 151 Oyster Point Blvd., #300, South San Francisco, CA, 94080
Top holdings (ownership): ALEC
Top holdings (Schedule 13G): ALEC

Filer intelligence

What SEC filings say about Arnon Rosenthal

A compact read of parsed XML filings. 13F, 13D/G, and Forms 3/4/5 are shown separately because they answer different ownership questions.

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Quick read

1 recent 13D/G stake row found; top row is ALEC at 7.4% ownership.
Forms 3/4/5 show insider context for ALEC worth $6.09M.

SEC source mix

Counts show available parsed rows, not one combined ownership total.

XML parsed

13F portfolio No rows yet

Quarterly institutional portfolio holdings.

Open

13D/G stakes 1 rows

Beneficial ownership and large-stake disclosures.

Open

Forms 3/4/5 1 rows

Officer, director, and 10% owner holdings or transactions.

Open

13D/G large-stake context

ALEC

31 Dec 2025 · Common Stock, $0.0001 par value per share

7.4%

Issuer page 13D/G history

Forms 3/4/5 insider context

ALEC

13 Mar 2026 · Chief Executive Officer

$6.09M

Issuer page Owner page

Latest update

What changed recently for Arnon Rosenthal

Ownership report updated

Latest ownership report period: 13 Mar 2026. Open the source-backed page to inspect the fresh filing or facts context.

Update date

13 Mar 2026

Page type

Ownership filings

Latest period

13 Mar 2026

Ownership context was refreshed from SEC Forms 3/4/5 filed on 13 Mar 2026.

Open ownership filings Browse recent public updates

Filer Overview

Arnon Rosenthal has filed 46 SEC EDGAR filings since 06 Feb 2019. Common forms include 4, 144, SCHEDULE 13G/A, SC 13G and more.

Arnon Rosenthal SEC filings Arnon Rosenthal 13D/G history Arnon Rosenthal owner filings

Latest Filings

Recent SEC filings for Arnon Rosenthal with direct links to document and filing folders.

4 File 001-38792

4

Filing date: 13 Mar 2026
Reporting date: 13 Mar 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-38792

4

Filing date: 03 Mar 2026
Reporting date: 02 Mar 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

144

144 filing

Filing date: 27 Feb 2026
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

SCHEDULE 13G/A

SCHEDULE 13G/A filing

Filing date: 06 Feb 2026
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-38792

4 filing

Filing date: 03 Dec 2025
Reporting date: 03 Dec 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

144

144 filing

Filing date: 01 Dec 2025
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-38792

4 filing

Filing date: 12 Nov 2025
Reporting date: 10 Nov 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-38792

4 filing

Filing date: 04 Sep 2025
Reporting date: 02 Sep 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

144

144 filing

Filing date: 29 Aug 2025
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-38792

4

Filing date: 01 Jul 2025
Reporting date: 01 Jul 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-38792

4 filing

Filing date: 04 Jun 2025
Reporting date: 02 Jun 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

144

144 filing

Filing date: 30 May 2025
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-38792

4

Filing date: 05 Mar 2025
Reporting date: 03 Mar 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

144

144 filing

Filing date: 28 Feb 2025
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-38792

4

Filing date: 03 Dec 2024
Reporting date: 02 Dec 2024
SEC evidence: Open document Open filing
Next action: Verify source filing

144

144 filing

Filing date: 29 Nov 2024
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-38792

4

Filing date: 02 Oct 2024
Reporting date: 01 Oct 2024
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-38792

4

Filing date: 04 Sep 2024
Reporting date: 03 Sep 2024
SEC evidence: Open document Open filing
Next action: Verify source filing

144

144 filing

Filing date: 30 Aug 2024
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-38792

4

Filing date: 04 Jun 2024
Reporting date: 03 Jun 2024
SEC evidence: Open document Open filing
Next action: Verify source filing

144

144 filing

Filing date: 31 May 2024
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-38792

4

Filing date: 05 Mar 2024
Reporting date: 04 Mar 2024
SEC evidence: Open document Open filing
Next action: Verify source filing

144

144 filing

Filing date: 01 Mar 2024
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

SC 13G

Filing date: 08 Feb 2024
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-38792

4

Filing date: 06 Dec 2023
Reporting date: 04 Dec 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

144

144 filing

Filing date: 01 Dec 2023
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-38792

4

Filing date: 03 Oct 2023
Reporting date: 01 Oct 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-38792

4

Filing date: 06 Sep 2023
Reporting date: 05 Sep 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

144

144 filing

Filing date: 01 Sep 2023
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-38792

4

Filing date: 05 Jun 2023
Reporting date: 02 Jun 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

144

144 filing

Filing date: 01 Jun 2023
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-38792

FORM 4 SUBMISSION

Filing date: 21 Mar 2023
Reporting date: 03 Mar 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-38792

FORM 4 SUBMISSION

Filing date: 03 Mar 2023
Reporting date: 02 Mar 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

SC 13G/A

Filing date: 10 Feb 2023
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-38792

FORM 4 SUBMISSION

Filing date: 04 Oct 2022
Reporting date: 01 Oct 2022
SEC evidence: Open document Open filing
Next action: Verify source filing

SC 13G

Filing date: 14 Feb 2022
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-38792

FORM 4 SUBMISSION

Filing date: 12 Nov 2021
Reporting date: 10 Nov 2021
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-38792

FORM 4 SUBMISSION

Filing date: 10 Nov 2021
Reporting date: 08 Nov 2021
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-38792

FORM 4 SUBMISSION

Filing date: 08 Nov 2021
Reporting date: 04 Nov 2021
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-38792

FORM 4 SUBMISSION

Filing date: 04 Oct 2021
Reporting date: 01 Oct 2021
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-38792

FORM 4 SUBMISSION

Filing date: 23 Sep 2021
Reporting date: 22 Sep 2021
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-38792

FORM 4 SUBMISSION

Filing date: 22 Sep 2021
Reporting date: 20 Sep 2021
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-38792

FORM 4 SUBMISSION

Filing date: 11 May 2021
Reporting date: 07 May 2021
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-38792

FORM 4 SUBMISSION

Filing date: 05 Oct 2020
Reporting date: 01 Oct 2020
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-38792

FORM 4 SUBMISSION

Filing date: 08 Nov 2019
Reporting date: 06 Nov 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

3 File 001-38792

FORM 3 SUBMISSION

Filing date: 06 Feb 2019
Reporting date: 06 Feb 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

About this filer

Arnon Rosenthal files with the SEC under CIK 0001757770. This page aggregates EDGAR filings and related ownership activity.

FAQ

What is a CIK?: A Central Index Key (CIK) is a unique identifier assigned by the SEC to each filer.
Why are some filings missing?: New filings appear as the SEC updates EDGAR, and older records can vary by availability.
How often is this page updated?: Updates follow new EDGAR submissions and periodic data refreshes.

Arnon Rosenthal

Follow future filing-backed changes

What SEC filings say about Arnon Rosenthal

Quick read

SEC source mix

13D/G large-stake context

Forms 3/4/5 insider context

What changed recently for Arnon Rosenthal

Filer Overview

Latest Filings

4

4

144 filing

SCHEDULE 13G/A filing

4 filing

144 filing

4 filing

4 filing

144 filing

4

4 filing

144 filing

4

144 filing

4

144 filing

4

4

144 filing

4

144 filing

4

144 filing

SC 13G

4

144 filing

4

4

144 filing

4

144 filing

FORM 4 SUBMISSION

FORM 4 SUBMISSION

SC 13G/A

FORM 4 SUBMISSION

SC 13G

FORM 4 SUBMISSION

FORM 4 SUBMISSION

FORM 4 SUBMISSION

FORM 4 SUBMISSION

FORM 4 SUBMISSION

FORM 4 SUBMISSION

FORM 4 SUBMISSION

FORM 4 SUBMISSION

FORM 4 SUBMISSION

FORM 3 SUBMISSION

About this filer

FAQ

Related pages for Arnon Rosenthal