Home / Going-concern warnings / Protagenic Therapeutics, Inc.\new

5/5Protagenic Therapeutics, Inc.\new (PTIX): Going-concern doubt

Filed 2026-08-14 路 Form 10-K 路 Accession 0001493152-26-038255 nano

Market data

Price before filing: $0.36 (2026-08-13 close, split/dividend-adjusted)
Market cap at flag: $696,556 (2026-08-14) 路 Latest: $1.4M (2026-10-16)

What happened next

WindowPTIXSPYvs SPY
30 days+130.6%-2.2%+132.7%2026-09-14
90 dayspendingpendinguntil 2026-11-12
180 dayspendingpendinguntil 2027-02-10

Return from the last close before the filing date to the first close on/after the window end. Pending windows have not fully elapsed. Past performance says nothing certain about the future.

Insider trading around this filing

90 days before the flag: 1 insider bought $7K (4 purchases)
30 days after: 1 insider bought $24K (3 purchases)

DateInsiderTypeSharesPriceValue10b5-1 planSource
2026-07-30ARMEN GARO H
EXEC. CHAIR & PRINCIPAL OFF., Director
Purchase26,291$0.18$5KnoForm 4
2026-08-05ARMEN GARO H
EXEC. CHAIR & PRINCIPAL OFF, Director
Purchase5,000$0.26$1KnoForm 4
2026-08-06ARMEN GARO H
EXEC. CHAIR & PRINCIPAL OFF, Director
Purchase685$0.22$151noForm 4
2026-08-11ARMEN GARO H
EXEC. CHAIR & PRINCIPAL OFF, Director
Purchase2,220$0.32$710noForm 4
2026-08-14: red flag filed
2026-08-19ARMEN GARO H
EXEC. CHAIR & PRINCIPAL OFF, Director
Purchase2,700$0.35$945noForm 4
2026-08-20ARMEN GARO H
EXEC. CHAIR & PRINCIPAL OFF, Director
Purchase16,634$0.59$10KnoForm 4
2026-08-21ARMEN GARO H
EXEC. CHAIR & PRINCIPAL OFF, Director
Purchase20,000$0.65$13KnoForm 4

Open-market purchases and sales (Form 4 codes P and S) by officers, directors and 10% owners, by transaction date, from 2026-05-16 to 2026-09-13. Excludes option exercises, grants, gifts and tax withholding. Amended filings replace the originals; joint filings count once. Foreign private issuers do not file Form 4. Many insider sales are pre-scheduled (10b5-1 plans) and are not by themselves a sign of wrongdoing.

Verified excerpt

"As discussed in Note 2 to the financial statements, the Company has suffered recurring losses from operations and has a net capital deficiency that raises substantial doubt about its ability to continue as a going concern."

Quoted from the filing. Source

What this means

The filing states that substantial doubt exists about the company's ability to continue as a going concern: it may not have enough cash to last the next 12 months. Expect dilution, debt deals or worse. An auditor's going-concern paragraph is the strongest form of this warning.

Going-concern opinion issued by: GreenGrowth CPAs
Source: independent auditor report in Form 10-K (period 2026-03-31)

Why this score: in auditor's report; also within 90 days: Late annual report (NT 10-K)

Read the original filing on SEC.gov →

Not investment advice. Automated summary; verify against the filing.

Get the weekly "Red Flags" newsletter

The week's most serious auditor changes, restatements, late filings and going-concern warnings, in plain English. Free. Unsubscribe anytime.

Subscribe to the newsletter →
The signup form didn't load here (often an ad or privacy blocker). This opens beehiiv's secure signup page.

Form not showing? Subscribe on beehiiv →

Newsletter delivered by beehiiv. See our privacy policy.