Rein received net proceeds of $0.95 million from the $1.0 million second advance on September 8, 2025. Yorkville buys each advance at 95% of face value, charges 8% interest and can require repayment in stock.
Rein Therapeutics, formerly Aileron, filed a late-filing notice for its 2024 annual report and expects an impairment loss of about $37.0 million tied to a delay in developing LTI-01. The charge is non-cash, but the company's 2023 annual report already carried a going-concern warning.
The impairment follows a temporary delay of further clinical work on LTI-01. The company, formerly Aileron Therapeutics, needs more time to finish its impairment assessment.
Latest balance sheet, Jun 30, 2026 (10-Q): cash and equivalents $8.5 million, plus short-term investments of $32.1 million, $40.6 million in all.
Figures as reported to the SEC in XBRL; each one links to its filing. Not adjusted, not investment advice.
Questions about Rein Therapeutics
Has Rein Therapeutics issued a going-concern warning?
Our latest story on this, dated Mar 31, 2025: "Rein Therapeutics, formerly Aileron, files NT 10-K and expects $37.0 million impairment". The story links the filing or release it is based on. Read the story.
Has Rein Therapeutics received a Nasdaq deficiency notice?
Our latest story on this, dated Mar 31, 2025: "Rein Therapeutics, formerly Aileron, files NT 10-K and expects $37.0 million impairment". The story links the filing or release it is based on. Read the story.
What is the ticker symbol of Rein Therapeutics?
Rein Therapeutics, Inc. trades under the ticker RNTX on NASDAQ.
Where is Rein Therapeutics listed?
Rein Therapeutics, Inc. is listed on NASDAQ.
What is the SEC CIK of Rein Therapeutics?
The SEC Central Index Key (CIK) for Rein Therapeutics, Inc. is 1420565. Its filings are on SEC EDGAR.
How many shares does Rein Therapeutics have outstanding?
86,267,032 shares as of 2026-08-12, per the cover page of its 10-Q filed 2026-08-14.
Which country or territory is Rein Therapeutics listed under?
Our directory records Rein Therapeutics, Inc. under United States.
What does Rein Therapeutics do?
Our directory classifies Rein Therapeutics, Inc. as: Pharmaceuticals: Major. This is a directory classification, not a description of the pipeline.
What is the ISIN of Rein Therapeutics?
The ISIN recorded for Rein Therapeutics, Inc. is US00887A2042.
Does aibio.space cover Rein Therapeutics?
aibio.space lists Rein Therapeutics, Inc. among 2,820 public biotech companies and publishes its news here as stories appear.
Is Rein Therapeutics profitable?
Rein Therapeutics, Inc. reported a net loss of $49.9 million for the fiscal year ended Dec 31, 2025, and used $19.4 million of cash in operations, per its annual report to the SEC.
How much does Rein Therapeutics spend on research and development?
$11.0 million in the fiscal year ended Dec 31, 2025, per its annual report.
How much cash does Rein Therapeutics have?
$40.6 million in cash and short-term investments at Jun 30, 2026, per its 10-Q.
What is the latest Rein Therapeutics (RNTX) stock news?
Our latest story on Rein Therapeutics, dated Sep 9, 2025: "Rein Therapeutics draws second $1.0 million advance from Yorkville". Rein received net proceeds of $0.95 million from the $1.0 million second advance on September 8, 2025. Yorkville buys each advance at 95% of face value, charges 8% interest and can require repayment in stock. Source.
What is Rein Therapeutics's latest stock offering or financing news?
Our latest financing story, dated Sep 9, 2025: "Rein Therapeutics draws second $1.0 million advance from Yorkville". Rein received net proceeds of $0.95 million from the $1.0 million second advance on September 8, 2025. Yorkville buys each advance at 95% of face value, charges 8% interest and can require repayment in stock. Source.
Investor discussion: Rein Therapeutics
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Capital-markets timeline
Financings, listing notices, splits, legal actions and other investor events at Rein Therapeutics, newest first. Each line links the filing it comes from.
Listings
Reported a notice from its stock exchange about continued listing requirements. SEC Form 8-K (Items 3.01). Source
Listings
Reported a shareholder vote on a reverse stock split or more authorized shares. SEC Form 8-K (Items 5.07). Source
Reported a financing. SEC Form 8-K (Items 1.01,2.03,3.02,9.01). Source
Financings
Reported a financing. SEC Form 8-K (Items 1.01,2.03,3.02,9.01). Source
Distress
Reported the end of a material agreement. SEC Form 8-K (Items 1.02). Source
Financings
Reported a financing. SEC Form 8-K (Items 1.01,2.03,3.02,9.01). Source
Financings
Reported a financing. SEC Form 8-K (Items 1.01,2.03,3.02,9.01). Source
Financings
Reported an unregistered sale of its securities. SEC Form 424B5. Source
Financings
Reported a financing. SEC Form 8-K (Items 1.01,3.02,9.01). Source
Legal
Reported a change of independent auditor. SEC Form 8-K (Items 4.01,9.01). Source
Distress
Told the SEC a periodic report would be filed late. SEC Form NT 10-K. Source
Distress
Reported substantial doubt about its ability to continue as a going concern. SEC Form 10-Q. Source
Stock chart
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SEC filings and registration
SEC name
Rein Therapeutics, Inc.
CIK
1420565
Industry (SIC)
Pharmaceutical Preparations (2834)
US tickers
RNTX (Nasdaq)
Fiscal year ends
December 31
Filer category
Non-accelerated filer<br>Smaller reporting company
Business address
12407 N. MOPAC EXPY., AUSTIN, TX, 78758
Phone
7378021989
Shares outstanding
86,267,032 as of 2026-08-12 (10-Q filed 2026-08-14)
Source: SEC EDGAR, retrieved October 23, 2026. Shares outstanding is the cover-page figure from the latest periodic report. The SEC does not publish share prices.
Listing details
Rein Therapeutics, Inc. is a public biotech or pharmaceutical company listed on NASDAQ under the ticker RNTX, recorded under United States. The directory classifies it as Pharmaceuticals: Major. aibio.space tracks 2,820 public biotech companies worldwide and publishes investor news on them.
Listing facts come from our company directory, researched on October 22, 2026. A listing record does not certify that a security currently trades. Tell us about a change. Work at this company? Claim this page.
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