Protagenic Therapeutics, Inc.

PTIX

Exchange: OTC
Industry: Pharmaceutical Preparations
SEC CIK: 0001022899

SEC filings (opens in a new tab)

In the last 90 days, Protagenic Therapeutics, Inc. insiders filed 7 open-market purchases and 0 sales; 2 institutions reported holding it in 13F filings for Q2 2026, worth $25.4K in total; no superinvestor holds it.

Q4 2022 vs. Q3 2022

How the institutions holding Protagenic Therapeutics, Inc. changed between Q3 2022 and Q4 2022.

All holders in Q4 2022 All holders in Q3 2022

13F holders of PTIX: Q3 2022 compared with Q4 2022
Measure	Q3 2022	Q4 2022	Change
Holders	17	18	+1
Shares	598.0K	611.4K	+13.4K (+2.2%)
Value	$342.0K	$247.9K	−$94.1K (−27.5%)

New holders (2)

Institutions that held Protagenic Therapeutics, Inc. at the end of Q4 2022 but not at the end of Q3 2022.

Institutions new to PTIX in Q4 2022
Institution	Shares	Value	% of portfolio
Warberg Asset Management LLC	20,000	$8.00K	0.00%
Susquehanna International Group, LLP	13,977	$5.84K	0.00%

Sold out (1)

Institutions that held Protagenic Therapeutics, Inc. at the end of Q3 2022 and filed for Q4 2022 without it.

Institutions that sold out of PTIX in Q4 2022
Institution	Shares, Q3 2022	Value, Q3 2022
Renaissance Technologies LLC	21,025	$12.0K