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Delisting risk

PTIX · NASDAQ · Biotechnology

Protagenic Therapeutics (PTIX)

Developing PT00114 for stress-related neuropsychiatric disorders.

$1.15

At close−0.04 (−3.36%)

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Breakdown13F · 13D/G · Form 4

Institutions4 holders · as of Mar 31, 2026	3.70%	66.9K shares
Insiders2 holders · as of Aug 24, 2026	4.96%	89.8K shares
Otherremainder	91.34%	1.65M shares

1.81M company shares as of Sep 3, 2026 · institutions as of Mar 31, 2026 · holders as of their latest filing

Top shareholders13F · 13D/G · Form 4

Holder	Stake	Shares	Evidence
Garo H. ArmenInsiderdirector, officer: EXEC. CHAIR & PRINCIPAL OFF	4.06%	73,533	Form 4filed Aug 24, 2026 ↗
DRW Securities, LLCInstitution	2.31%	41,783	13Fas of Mar 31, 2026
FNY Investment Advisers, LLCInstitution	1.38%	25,000	13Fas of Mar 31, 2026
Barrett EvansInsiderdirector, 10 percent owner, officer: ex CEO	0.90%	16,233	Form 4filed Oct 24, 2025 ↗
Corecap Advisors, LLCInstitution	0.01%	100	13Fas of Mar 31, 2026
United Financial Planning Group LLCInstitution	0.00%	17	13Fas of Mar 31, 2026
Hudson Bay Capital Management, L.P.Institution	—9.99% of class, as filed	—	13G/Afiled Jan 30, 2017 ↗
of the Act (however, see the Notes).Insider	—9.99% of class, as filed	—	13G/Afiled Feb 10, 2021 ↗
Khalil Barrage¹Insiderdirector	0.40%	7,321	Form 4filed May 5, 2021 ↗
Alexander K. Arrow²Insiderofficer: Chief Financial Officer	0.18%	3,273	Form 4filed Oct 13, 2023 ↗

Last filed May 5, 2021; leaving the company requires no filing. Not in the bar.
Last filed Oct 13, 2023; leaving the company requires no filing. Not in the bar.

13F — a manager's quarterly holdings · 13D/13G — an ownership statement filed at 5% or more · Form 4 — an insider's transaction report

Institutions13F, as of Mar 31, 2026

4 holders · 66.9K shares · 1 new position · 1 increased · 1 reduced · 8 closed

Holder	Shares	% outstanding	Chg q/q	Filed
DRW Securities, LLC	41.8K	2.31%	−1.1K	May 13, 2026
FNY Investment Advisers, LLC	25.0K	1.38%	0	Apr 15, 2026
Corecap Advisors, LLC	100	0.01%	+100new	Apr 7, 2026
United Financial Planning Group LLC	17	0.00%	0	May 8, 2026

Ownership statements13D/G · 5% or more, as filed

No 13D/G filer at 5% or more on record.

Insider tradesForm 4

Latest trades

Date	Insider	Type	Shares	Avg price	Owned after
Aug 21, 2026	Garo H. Armendirector, officer: EXEC. CHAIR & PRINCIPAL OFF	Purchase	20,000	$0.6500	73,533
Aug 20, 2026	Garo H. Armendirector, officer: EXEC. CHAIR & PRINCIPAL OFF	Purchase	16,634	$0.5898	53,533
Aug 19, 2026	Garo H. Armendirector, officer: EXEC. CHAIR & PRINCIPAL OFF	Purchase	2,700	$0.3500	36,899
Aug 11, 2026	Garo H. Armendirector, officer: EXEC. CHAIR & PRINCIPAL OFF	Purchase	2,220	$0.3200	34,199
Aug 6, 2026	Garo H. Armendirector, officer: EXEC. CHAIR & PRINCIPAL OFF	Purchase	685	$0.2200	31,979
Aug 5, 2026	Garo H. Armendirector, officer: EXEC. CHAIR & PRINCIPAL OFF	Purchase	5,000	$0.2588	31,294
Jul 30, 2026	Garo H. Armendirector, officer: EXEC. CHAIR & PRINCIPAL OFF.	Purchase	26,291	$0.1828	26,291

CongressHouse and Senate disclosures

Not reported.