Levi & Korsinsky Notifies Investors of Pending Investigation Into Securities Claims Involving Onterris, Inc. (ONT)

Onterris shares dropped approximately 18% on August 5, 2026, after the Company reported Q2 2026 revenue of $186.7 million and reduced full-year guidance by approximately $105 million at the midpoint. Levi & Korsinsky is investigating on behalf of ONT investors

NEW YORK, Aug. 17, 2026 (GLOBE NEWSWIRE) -- Onterris, Inc. (NYSE: ONT) shares fell approximately 17.5% to 18% on August 5, 2026, after the Company reported second quarter revenue of $186.7 million -- down 20.4% year over year and roughly 6% to 7% below consensus -- and lowered its full-year revenue outlook to $740 million to $790 million from $840 million to $900 million. If you suffered a loss on your Onterris investment, you are encouraged to click here to submit your information. You may also contact Joseph E. Levi, Esq. via email at jlevi@levikorsinsky.com or by telephone at (212) 363-7500.

The scale of the exposure is concentrated in one revenue line. In its February 25, 2026 outlook, Onterris stated it expected 2026 revenue of $840.0 million to $900.0 million, "which includes expected annual emergency response revenue of $50.0 million to $70.0 million." On August 5, management attributed the shortfall "primarily to unusually low environmental emergency-response and related recovery activity," and also cited lower pass-through revenue and temporary regulatory waivers affecting some air-testing work.

Alongside the results, Onterris disclosed a Board strategic review. Bank of America subsequently downgraded the stock, citing deregulation and execution risks. The reduced full-year range sits approximately 12% below the February midpoint.

Shareholders who lost money on ONT are encouraged to have their losses reviewed now. You may also reach Joseph E. Levi, Esq. at jlevi@levikorsinsky.com or (212) 363-7500.

ABOUT LEVI & KORSINSKY, LLP -- Over the past 20 years, Levi & Korsinsky has secured hundreds of millions of dollars for aggrieved shareholders. The firm has extensive expertise in complex securities litigation and a team of over 70 employees. For seven consecutive years, Levi & Korsinsky has ranked in ISS Securities Class Action Services' Top 50 Report.

Frequently Asked Questions About the ONT Investigation

Q: What is the ONT securities investigation about? A: A securities investigation is pending concerning Onterris, Inc. (NYSE: ONT) regarding potentially materially false or misleading statements. Shares fell approximately 18% after the Company reported an approximately 6% to 7% revenue miss and reduced full-year revenue guidance to $740-$790 million from $840-$900 million, causing losses for shareholders.

Q: Who is eligible to participate in the ONT investigation? A: Investors who purchased ONT stock or securities and suffered financial losses may be eligible. Eligibility is based on purchase date and documented losses -- not on whether you still hold the shares.

Q: How much did ONT stock drop? A: Shares fell approximately 17.5% to 18% on August 5, 2026 after the Company reported Q2 revenue of $186.7 million, down 20.4% year over year, and cut its full-year outlook. Investors who purchased shares and suffered losses may be eligible to seek recovery.

Q: What do ONT investors need to do right now? A: Gather brokerage records including purchase dates, share quantities, and prices paid. Contact Levi & Korsinsky for a free, no-obligation evaluation at jlevi@levikorsinsky.com or (212) 363-7500. No immediate action is required to remain eligible to participate in the investigation.

Q: What documents do I need to participate? A: Brokerage statements or trade confirmations showing purchase dates, share quantities, prices paid, and any subsequent sale dates and prices.

Q: What if I already sold my ONT shares -- can I still recover losses? A: Yes. Eligibility is based on when you purchased, not whether you still hold the shares. Investors who bought ONT and sold at a loss may still participate in the investigation.

Q: What does it cost me to participate? A: There is no upfront cost to participate. Securities investigations and any resulting actions are generally handled on a contingency basis. No upfront fees, no retainer, and no out-of-pocket costs.

Q: Do I need to go to court or give testimony? A: No. Participating in the investigation does not require court appearances or depositions.

CONTACT:
Levi & Korsinsky, LLP
Joseph E. Levi, Esq.
Ed Korsinsky, Esq.
33 Whitehall Street, 27th Floor
New York, NY 10004
jlevi@levikorsinsky.com
Tel: (212) 363-7500
Fax: (212) 363-7171

Attorney Advertising. Prior results do not guarantee similar outcomes.