Azitra
AZTR on NYSEAmerican. Market value $8m.
Should I look at this?
Look carefully before going further
Why it could be worth it
Nothing stands out yet.
What to watch out for
Read the warning sign in its own filings
This is not advice.
Who owns it
None of the long-term investors we follow own it. 14 funds in all.
Largest holders overall
- Dauntless Investment Group$2mAdded
- Stonepine Capital Management$886,903New
- Nantahala Capital Management$742,888New
- Jane Street Group$41,688New
- Geode Capital Management$16,008Cut
- Citadel Advisors$14,471New
- Virtu Financial$11,000New
- UBS Group AG$8,481Added
- StoneX Group$5,029Added
- Tower Research Capital LLC (TRC)$3,272Added
From 13F filings for the quarter ended 30 June 2026.
Big holders and activists
7 investors own more than 5%.
- Nantahala Capital Management, LLCPassive investorat least 10.0%(filed with 2 related holders)Since 30 June 2026
- Salva Francisco D.Insider or founder10.0%Since 16 June 2026
What they said
The Reporting Person acquired the securities for investment purposes and currently intends to hold the securities for investment. The Reporting Person may from time to time acquire additional securities of the Issuer or dispose of securities of the Issuer depending on market…
Read the filing - Alumni Capital LPPassive investorat least 10.0%0.0 pts(filed with 2 related holders)Since 25 November 2025
- Ayrton Capital LLCPassive investorat least 10.0%(filed with 2 related holders)Since 31 March 2025
- Stonepine Capital Management, LLCPassive investorat least 9.9%(filed with 3 related holders)Since 16 June 2026
- Dauntless Investment Group, LLCPassive investor9.6%Since 24 June 2026
- NANTAHALA CAPITAL PARTNERS LIMITED PARTNERSHIPPassive investor8.4%Since 30 June 2026
- L1 Capital Global Opportunities Master Fund, Ltd.Passive investorSold down below 5%Since 14 November 2025
| Holder | Stake | Since | |
|---|---|---|---|
Nantahala Capital Management, LLC Passive investor | at least 10.0% (filed with 2 related holders) | 30 June 2026 | |
Salva Francisco D. Insider or founder | 10.0% | 16 June 2026 | What they saidThe Reporting Person acquired the securities for investment purposes and currently intends to hold the securities for investment. The Reporting Person may from time to time acquire additional securities of the Issuer or dispose of securities of the Issuer depending on market… Read the filing |
Alumni Capital LP Passive investor | at least 10.0%0.0 pts (filed with 2 related holders) | 25 November 2025 | |
Ayrton Capital LLC Passive investor | at least 10.0% (filed with 2 related holders) | 31 March 2025 | |
Stonepine Capital Management, LLC Passive investor | at least 9.9% (filed with 3 related holders) | 16 June 2026 | |
Dauntless Investment Group, LLC Passive investor | 9.6% | 24 June 2026 | |
NANTAHALA CAPITAL PARTNERS LIMITED PARTNERSHIP Passive investor | 8.4% | 30 June 2026 | |
L1 Capital Global Opportunities Master Fund, Ltd. Passive investor | Sold down below 5% | 14 November 2025 |
From Schedule 13D and 13G filings: anyone owning more than 5% must file one.
What insiders did
No insider bought or sold on the open market in the last 12 months.
From Form 4 filings: insiders must report trades in their own company's shares within two days.
Warning signs in its filings
Problems the company itself reported to the SEC, in its own words.
2 serious warning signs in Azitra’s filings.
We look for five warning signs: doubt it can keep going, weak checks on its own accounts, a notice that its past accounts can't be relied on, a change of auditor, and one customer bringing in a big share of sales. We don't check lawsuits, investigations or debt yet.
We checked the auditor's report, internal controls, restatement notices, auditor changes and big customers in the 10-K filed 27 Feb 2026, plus the 10-Q filed 12 Aug 2026 and 14 later 8-Ks.
Doubt it can keep going
SeriousThe company or its auditor warned it may not have enough money to last the next year.
“These conditions and events create substantial doubt about the ability of the Company to continue as a going concern for twelve months from the date that the financial statements are available to be issued.”
Show the full paragraph
These conditions and events create substantial doubt about the ability of the Company to continue as a going concern for twelve months from the date that the financial statements are available to be issued. The financial statements do not include any adjustments that might be necessary should the Company be unable to continue as a going concern.
From the 10-Q filed 12 August 2026, Part I, Item 1. Financial Statements. Read it in the filing
Weak checks on its own accounts
SeriousThe company said its checks on its own accounts did not work at the end of its latest quarter. Mistakes could slip into the numbers.
“Based upon the foregoing, our chief executive officer and chief financial officer concluded that our disclosure controls and procedures were not effective as of June 30, 2026.”
Show the full paragraph
Our management, with the participation of our chief executive officer and chief financial officer, evaluated the effectiveness of the design and operation of our disclosure controls and procedures, pursuant to Rule 13a-15 of the Securities Exchange Act of 1934, as of June 30, 2026. In the course of that evaluation, we identified a material weakness as it relates to a lack of adequate segregation of accounting functions that was identified in connection with the audits of our financial statements as of December 31, 2025 and 2024 and for each of the years in the two year period ended December 31, 2025 and 2024. We intend to increase staffing within our accounting infrastructure sufficient to facilitate proper segregation of accounting functions and to enable appropriate review of our internally prepared financial statements. Based upon the foregoing, our chief executive officer and chief financial officer concluded that our disclosure controls and procedures were not effective as of June 30, 2026.
From the 10-Q filed 12 August 2026, Part I, Item 4. Controls and Procedures. Read it in the filing
A 10-K is the yearly report every US company files with the SEC. An 8-K is a short notice of a big event.
The deep dive
Everything above is arithmetic on public filings. The deep dive reads the last ten years of annual reports, the proxy statements, and the earnings calls, then argues the case the way Buffett, Klarman, and Hohn would, and checks every claim against the source.
- What the business is worth, as a range, and the margin of safety at today’s price
- Prices to start buying, buy, and buy hard
- The three things that would make this a mistake
- Every number footnoted to the filing it came from
Your first deep dive is free.
Not advice. Numbers on this page come from SEC filings and are updated each night; prices are updated again after the US market closes. The five-year figures are rounded.