$PTIX

$0.74 +$0.00 (0.0%) Close

$PTIX Overview Financial Statements SEC Filings Executives News Red Flags Capital Raising Ownership Insider Transactions Congressional Trades

Ownership

13F as of Q2 2026 · 1.8M shares outstanding

Who owns PTIX?

By type of holder

Institutions 0.0% Insiders 6.8% Everyone else 93.2%

Concentration Top 1 holders own 4.1%

Armen Garo H 4.1%

Institutional ownership

0.0%

0.0 pts vs last qtr

Institutional holders

0 vs last qtr

Net shares bought

by institutions in Q2 2026

New / sold out

0 / 0

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

None.

Biggest sellers in Q2 2026

None.

Who is planning to sell?

No insider has filed a notice of proposed sale (Form 144) for Protagenic Therapeutics Inc in the last 12 months.

Is your stake being diluted?

Diluted share count, FY2025–FY2026

−56.6%

−56.65% a year

Each share's claim on the business

+130.7%

grew without buying or selling a share

Spent on buybacks vs paid in stock

— vs $419K

over 2 fiscal years

Diluted shares, split-adjusted

Buybacks Stock-based comp

How patient are the owners?

No 13F manager reports holding PTIX.

Super Investors

Investment managers reporting PTIX on Form 13F

No 13F manager reports holding PTIX yet.

Institutional Funds

Mutual funds and ETFs reporting PTIX on Form N-PORT; together they hold 4.2% of the company

Fund	Position value	Shares	% of company	% of the fund	As of
FN Fidelity Nasdaq Composite Index Fund Fidelity Concord Street Trust	$6.98K	22.9K	1.26%	0.00%	February 28, 2025
VE Vanguard Extended Market Index Fund Vanguard Index Funds	$6.24K	32.0K	1.77%	0.00%	March 31, 2025

Fidelity Nasdaq Composite Index Fund

Fidelity Concord Street Trust

Position value

$6.98K

% of company

1.26%

% of the fund

0.00%

As of

February 28, 2025

Vanguard Extended Market Index Fund

Vanguard Index Funds

Position value

$6.24K

% of company

1.77%

% of the fund

0.00%

As of

March 31, 2025

2 more funds behind a free account

See every fund holding Protagenic Therapeutics Inc and how much of the fund the position is.

Insiders and 5%+ holders

From Forms 3/4/5 and Schedules 13D/G

Holder	Shares	% of company	Change vs last qtr	8 quarters	Held since	% of their book
AG Armen Garo H Insider	73.5K	4.06%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company4.060% Armen Garo H's insider activity →

Armen Garo H

Insider

73.5K

% of company

4.06%

Change vs last qtr

—

Held since

—

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