PESI SCHEDULE 13G/A: SEC filing

An institutional holder

Filed with the SEC on Aug 28, 2026 · accession 0001385702-26-000006

PESI filed a SCHEDULE 13G/A (schedule 13g/a) with the SEC on Aug 28, 2026. A report the company filed with the SEC (the US market regulator). The stock moved -6.1% by the first close after the filing.

Summary of the filing

An institutional holder filed an amended Schedule 13G disclosing its passive ownership position in Perma-Fix Environmental Services Inc. The filing indicates a change from a previously reported ownership stake.

For details, click here →

Key details

IssuerPerma-Fix Environmental Services Inc.

How PESI stock reacted

Close before

$19.30

Aug 27, 2026

First close after

-6.11%

$18.12

5 trading days

-4.77%

$18.38

Since filing

-27.20%

$14.05

✦ Ask GOAX AI about this filing — what it means for PESI, what changed since its last filings and what to watch next.

Try it free for 7 days

🔔 Want to stay updated on new SEC filings for PESI?

Click here

Frequently asked questions

What did PESI file with the SEC on Aug 28, 2026?

PESI filed a SCHEDULE 13G/A (SEC filing). An institutional holder filed an amended Schedule 13G disclosing its passive ownership position in Perma-Fix Environmental Services Inc. The filing indicates a change from a previously reported ownership stake.

How do I read a SCHEDULE 13G/A?

A report the company filed with the SEC (the US market regulator). Start with the summary, then the key amounts and names. Compare it with the company’s earlier filings.

Why are SEC filings important?

Public companies must tell the SEC about anything that can change their value — results, leadership changes, big deals, new shares, bankruptcy. Filings are the official source, often before the news. A SCHEDULE 13G/A (schedule 13g/a): A report the company filed with the SEC (the US market regulator).

How did PESI stock react to this filing?

PESI closed at $19.30 before the filing and $18.12 on Aug 28, 2026 (-6.11%). Five trading days later: $18.38 (-4.77%).

Other PESI SEC filings

Get alerts when PESI files with the SEC, plus live charts, key levels and news for 13,000+ stocks.

Try SEPT free for 7 days

PESI overview PESI analysis PESI news Latest SEC filings