Entity Type
Individual
Filer Snapshot
Donald L. Althoff
CIK 0002023079. SEC filing timeline plus parsed ownership intelligence from 13F, 13D/G, and Forms 3/4/5 where available.
Total Filings
4
Latest Filing
05 Feb 2026
Industry
n/a
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Best next click
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- Open 13F if you want portfolio holdings.
- Open 13D/G or insider pages only when this CIK has those rows.
Source: SEC Forms 3/4/5
View Source Filing
4 filed on 05 Feb 2026 for CIK 0002023079.
- Business address
- C/O Ecovyst Inc., 300 Lindenwood Drive, Malvern, PA, 19355
- Top holdings (ownership)
- ECVT
Filer intelligence
What SEC filings say about Donald L. Althoff
A compact read of parsed XML filings. 13F, 13D/G, and Forms 3/4/5 are shown separately because they answer different ownership questions.
Quick read
- Forms 3/4/5 show insider context for ECVT worth $568K.
SEC source mix
Counts show available parsed rows, not one combined ownership total.
Forms 3/4/5 insider context
ECVT
03 Feb 2026
Latest update
What changed recently for Donald L. Althoff
Latest ownership report period: 03 Feb 2026. Open the source-backed page to inspect the fresh filing or facts context.
Update date
05 Feb 2026
Page type
Ownership filings
Latest period
03 Feb 2026
Ownership context was refreshed from SEC Forms 3/4/5 filed on 05 Feb 2026.
Filer Overview
Donald L. Althoff has filed 4 SEC EDGAR filings since 17 May 2024. Common forms include 4, 3.
Latest Filings
Recent SEC filings for Donald L. Althoff with direct links to document and filing folders.
4
File 001-38221
FORM 4
- Filing date
- 05 Feb 2026
- Reporting date
- 03 Feb 2026
- SEC evidence
- Open document Open filing
- Next action
- Verify source filing
4
File 001-38221
FORM 4
- Filing date
- 05 Feb 2025
- Reporting date
- 03 Feb 2025
- SEC evidence
- Open document Open filing
- Next action
- Verify source filing
4
File 001-38221
FORM 4
- Filing date
- 22 May 2024
- Reporting date
- 20 May 2024
- SEC evidence
- Open document Open filing
- Next action
- Verify source filing
3
File 001-38221
FORM 3
- Filing date
- 17 May 2024
- Reporting date
- 08 May 2024
- SEC evidence
- Open document Open filing
- Next action
- Verify source filing
About this filer
Donald L. Althoff files with the SEC under CIK 0002023079. 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.