Filer Snapshot

Austin So SEC EDGAR Filings

SEC filings, ownership reports, and insider transactions for CIK 0001677343.

Entity Type

Individual

Total Filings

26

Latest Filing

02 Mar 2026

Industry

n/a

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Go to latest filings table Open reporting owner context
Source: SEC Forms 3/4/5

4 filed on 02 Mar 2026 for CIK 0001677343.

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Business address
C/O Armstrong World Industries, Inc., 2500 Columbia Avenue, Lancaster, PA, 17603
Top holdings (ownership)
AWI

Quick Takeaways

  • Austin So is an SEC filer tracked under CIK 0001677343.
  • 26 filings are listed on this profile.
  • Common form coverage includes 4, 4/A, 3.

What Changed

  • Latest filing: 4 filed on 02 Mar 2026.
  • Report period: 27 Feb 2026.

Why This Matters

  • You can quote filing dates and form types directly from the SEC record on this page.
  • Use this profile before deeper ownership or insider analysis to confirm filing history context.

Source Evidence

Source: SEC Forms 3/4/5

4 filed on 02 Mar 2026 for CIK 0001677343.

View Source Filing

Return Loop

Why revisit this filer page

A newly filed 4 can change the filing history, ownership context, or next research path for Austin So.

Latest source-backed update
4 filed 02 Mar 2026
Why come back
Revisit after a new SEC filing appears to compare the updated record with prior filings.
  • Latest filing on record: 4 filed 02 Mar 2026.
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Filer freshness comes from SEC EDGAR submission history and related source-backed ownership or portfolio filings when available.

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Latest update

What changed recently for Austin So

Ownership report updated

Latest ownership report period: 27 Feb 2026. Open the source-backed page to inspect the fresh filing or facts context.

Update date

02 Mar 2026

Page type

Ownership filings

Latest period

27 Feb 2026

Ownership context was refreshed from SEC Forms 3/4/5 filed on 02 Mar 2026.

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Filer Overview

Austin So has filed 26 SEC EDGAR filings since 06 Jul 2016. Common forms include 4, 4/A, 3.

Reporting owner transactions Latest 13F filings

Latest Filings

Recent SEC filings for Austin So with direct links to document and filing folders.

4 File 001-02116

PRIMARY DOCUMENT

Filing date
02 Mar 2026
Reporting date
27 Feb 2026
SEC evidence
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4 File 001-02116

PRIMARY DOCUMENT

Filing date
10 Apr 2025
Reporting date
08 Apr 2025
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4 File 001-02116

PRIMARY DOCUMENT

Filing date
28 Feb 2025
Reporting date
26 Feb 2025
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4 File 001-02116

PRIMARY DOCUMENT

Filing date
03 Feb 2025
Reporting date
31 Jan 2025
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4/A File 001-02116

PRIMARY DOCUMENT

Filing date
03 Feb 2025
Reporting date
01 Feb 2024
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4 File 001-02116

PRIMARY DOCUMENT

Filing date
22 Feb 2024
Reporting date
21 Feb 2024
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4 File 001-02116

PRIMARY DOCUMENT

Filing date
02 Feb 2024
Reporting date
01 Feb 2024
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4 File 001-02116

PRIMARY DOCUMENT

Filing date
03 Mar 2023
Reporting date
01 Mar 2023
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4 File 001-02116

PRIMARY DOCUMENT

Filing date
03 Feb 2023
Reporting date
01 Feb 2023
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4 File 001-39172

FORM 4 SUBMISSION

Filing date
08 Feb 2022
Reporting date
07 Feb 2022
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4 File 001-02116

PRIMARY DOCUMENT

Filing date
03 Feb 2022
Reporting date
01 Feb 2022
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3 File 001-02116

PRIMARY DOCUMENT

Filing date
03 Feb 2022
Reporting date
01 Feb 2022
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4 File 001-39172

FORM 4 SUBMISSION

Filing date
07 Dec 2020
Reporting date
03 Dec 2020
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4 File 001-39172

FORM 4 SUBMISSION

Filing date
02 Jan 2020
Reporting date
31 Dec 2019
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3 File 001-39172

FORM 3 SUBMISSION

Filing date
02 Jan 2020
Reporting date
31 Dec 2019
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4 File 001-32270

FORM 4 SUBMISSION

Filing date
02 Jan 2020
Reporting date
31 Dec 2019
SEC evidence
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4 File 001-32270

FORM 4 SUBMISSION

Filing date
20 Dec 2019
Reporting date
18 Dec 2019
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4 File 001-32270

FORM 4 SUBMISSION

Filing date
08 Aug 2019
Reporting date
05 Jul 2019
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4 File 001-32270

FORM 4 SUBMISSION

Filing date
01 Jul 2019
Reporting date
27 Jun 2019
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4 File 001-32270

FORM 4 SUBMISSION

Filing date
17 Apr 2019
Reporting date
15 Apr 2019
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4 File 001-32270

FORM 4 SUBMISSION

Filing date
05 Apr 2019
Reporting date
03 Apr 2019
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4 File 001-32270

FORM 4 SUBMISSION

Filing date
04 Mar 2019
Reporting date
04 Mar 2019
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4 File 001-32270

FORM 4 SUBMISSION

Filing date
21 Mar 2018
Reporting date
19 Mar 2018
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4 File 001-32270

FORM 4 SUBMISSION

Filing date
05 Jul 2017
Reporting date
05 Jul 2017
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4 File 001-32270

FORM 4 SUBMISSION

Filing date
06 Jul 2016
Reporting date
05 Jul 2016
SEC evidence
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3 File 001-32270

FORM 3 SUBMISSION

Filing date
06 Jul 2016
Reporting date
05 Jul 2016
SEC evidence
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About this filer

Austin So files with the SEC under CIK 0001677343. 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.
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