Perma-Fix to Present at Gabelli Waste Symposium

Perma-Fix Environmental Services, Inc. filed a current report stating that its CEO and CFO will present at Gabelli Funds’ 12th Annual Waste & Environmental Services Symposium on April 9, 2026.

Filing Impact

(Moderate)

Filing Sentiment

(Neutral)How Sentiment works

Sentiment and the balance of points

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How Sentiment works How the balance works

Form Type

8-K

Rhea-AI Filing Summary

Perma-Fix Environmental Services, Inc. filed a current report stating that its CEO and CFO will present at Gabelli Funds’ 12th Annual Waste & Environmental Services Symposium on April 9, 2026. Attendees will see the company’s “Investor Presentation, April 2026,” which is attached as Exhibit 99.1 and will also be posted on the company’s website.

8-K Event Classification

2 items: 8.01, 9.01

2 items

Item 8.01 Other Events Other

Voluntary disclosure of events the company deems important to shareholders but not covered by other items.

Item 9.01 Financial Statements and Exhibits Exhibits

Financial statements, pro forma financial information, or exhibit attachments filed with this report.

Key Figures

Symposium date: April 9, 2026

1 metrics

Symposium date April 9, 2026 Gabelli Funds’ 12th Annual Waste & Environmental Services Symposium

Key Terms

Investor Presentation, April 2026, Waste & Environmental Services Symposium, Inline XBRL

3 terms

Investor Presentation, April 2026 financial

"Attendees at the Symposium will be presented with the Company’s “Investor Presentation, April 2026,”"

Waste & Environmental Services Symposium financial

"Gabelli Funds’ 12th Annual Waste & Environmental Services Symposium (the “Symposium”)."

Inline XBRL technical

"Cover Page Interactive Data File (embedded within the Inline XBRL document)."

Inline XBRL is a file format for financial filings that embeds machine-readable data tags directly inside the human-readable report, so the same document can be read by people and parsed by software. For investors it makes extracting, comparing and verifying financial numbers faster and more reliable—like a grocery list where each item also has a barcode—reducing manual errors and speeding up analysis.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What did Perma-Fix (PESI) announce in its latest 8-K filing?

Perma-Fix disclosed that its CEO and CFO will present at Gabelli Funds’ 12th Annual Waste & Environmental Services Symposium, using an April 2026 investor presentation attached as Exhibit 99.1 and made available on the company’s website.

When will Perma-Fix (PESI) present at the Gabelli Waste & Environmental Services Symposium?

Perma-Fix stated that its CEO and CFO will present at Gabelli Funds’ 12th Annual Waste & Environmental Services Symposium on April 9, 2026, using the company’s April 2026 investor presentation as the core discussion material for attendees.

Who from Perma-Fix (PESI) is speaking at the Gabelli Funds symposium?

The filing notes that Perma-Fix’s Chief Executive Officer and Chief Financial Officer will jointly present at Gabelli Funds’ 12th Annual Waste & Environmental Services Symposium, highlighting company information contained in the attached April 2026 investor presentation.

What is Exhibit 99.1 in Perma-Fix’s (PESI) April 2026 8-K?

Exhibit 99.1 is titled “Perma-Fix Environmental Services, Inc. Investor Presentation, April 2026.” The company explains that this investor presentation will be shown at the Gabelli Funds symposium and will also be posted on Perma-Fix’s website for broader access.

Where can investors access Perma-Fix’s April 2026 investor presentation?

Perma-Fix indicates that the April 2026 investor presentation, used for the Gabelli Funds symposium, is attached as Exhibit 99.1 to the current report and will also be posted on the company’s website for investors and other interested parties.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 04/08/2026 - 04:30 PM EDT

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

PURSUANT TO SECTION 13 OR 15(d) OF THE

SECURITIES EXCHANGE ACT OF 1934

Date of Report (Date of earliest event reported) April 8, 2026

PERMA-FIX ENVIRONMENTAL SERVICES, INC.

(Exact name of registrant as specified in its charter)

PERMA FIX ENVIRONMENTAL SERVICES INC

Delaware

1-11596

58-1954497

(State or other jurisdiction

of incorporation)

(Commission

File Number)

(IRS Employer

Identification No.)

8302 Dunwoody Place, Suite 250, Atlanta, Georgia		30350
(Address of principal executive offices)		(Zip Code)

Registrant’s telephone number, including area code: (770) 587-9898

Not applicable

(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐	Written communications pursuant to Rule 425 under the Securities Act

☐	Soliciting material pursuant to Rule 14a-12 under the Exchange Act

☐	Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act

☐	Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act

Securities registered pursuant to Section 12(b) of the Act:

Title of Each Class		Trading Symbol		Name of each exchange on which registered
Common Stock, Par Value, $.001 Per Share		PESI		Nasdaq Capital Market

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 or Rule 12b-2 of the Securities Exchange Act of 1934.

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act ☐

Item 8.01 – Other Events.

On April 9, 2026, Perma-Fix Environmental Services, Inc.’s (the “Company”) Chief Executive Officer (“CEO”) and Chief Financial Officer (“CFO”) will be presenting at Gabelli Funds’ 12^th Annual Waste & Environmental Services Symposium (the “Symposium”). Attendees at the Symposium will be presented with the Company’s “Investor Presentation, April 2026,” attached to this Report as Exhibit 99.1, and incorporated herein by reference. The investor presentation will also be posted to the Company’s website.

Item 9.01. Financial Statements and Exhibits

(d) Exhibits.

Exhibit		Description

99.1		Perma-Fix Environmental Services, Inc. Investor Presentation, April 2026.

104		Cover Page Interactive Data File (embedded within the Inline XBRL document).

Signatures

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Dated: April 8, 2026