SEPTInvestingStart Free

PESI 8-K: SEC filing

Perma-Fix Environmental Services

Filed with the SEC on · accession 0001493152-26-043859

PESI filed a 8-K (current report) with the SEC on Sep 23, 2026. Perma-Fix Environmental Services filed an amended 8-K to replace its September 2026 investor presentation with a revised version that corrects the presentation of its Direct-Feed Low-Activity Waste (DFLAW) program revenue projections on slides 9 and 16, following investor inquiries. The stock moved -4.5% by the first close after the filing.

Summary of the filing

Perma-Fix Environmental Services filed an amended 8-K to replace its September 2026 investor presentation with a revised version that corrects the presentation of its Direct-Feed Low-Activity Waste (DFLAW) program revenue projections on slides 9 and 16, following investor inquiries. The revised presentation shows a 2028 illustrative run rate of approximately $97.4 million.

For details, click here →How to read a 8-K →

Key details

Estimated annual DFLAW-related revenue at full operation (8,000 cubic meters effluent)$70.0M
Estimated annual revenue from combined DFLAW waste at 50% capacity in 2027 (approximately 4,000 cubic meters)$35.0M
Revised initial 200 East annual revenue amount$28.8M
2028 illustrative run rate shown on revised slide 16$97.4M
RegistrantPerma-Fix Environmental Services, Inc.
Source of dflaw effluent volume estimate referenced in presentationU.S. Department of Energy
Executive vice president and chief financial officerBen Naccarato

How PESI stock reacted

Close before

$16.53

Sep 22, 2026

First close after

-4.48%

$15.79

5 trading days

-6.78%

$15.41

Since filing

-15.00%

$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 Sep 23, 2026?

PESI filed a 8-K (SEC filing). Perma-Fix Environmental Services filed an amended 8-K to replace its September 2026 investor presentation with a revised version that corrects the presentation of its Direct-Feed Low-Activity Waste (DFLAW) program revenue projections on slides 9 and 16, following investor inquiries. The revised presentation shows a 2028 illustrative run rate of approximately $97.4 million.

How do I read a 8-K?

A report of a major event, filed within four business days: results, deals, leadership changes, bankruptcy and more. The "Item" number tells you the topic (e.g. 2.02 results, 5.02 executive change, 1.01 new agreement, 1.03 bankruptcy). Exhibits (99.1 press release) usually hold the details.

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 8-K (current report): A report of a major event, filed within four business days: results, deals, leadership changes, bankruptcy and more.

How did PESI stock react to this filing?

PESI closed at $16.53 before the filing and $15.79 on Sep 23, 2026 (-4.48%). Five trading days later: $15.41 (-6.78%).

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 overviewPESI analysisPESI newsLatest SEC filings