Form 8-K

8-K — Protagenic Therapeutics, Inc.\new

Accession: 0001493152-26-015365

Filed: 2026-04-07

Period: 2026-03-31

CIK: 0001022899

SIC: 2834 (PHARMACEUTICAL PREPARATIONS)

Item: Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers

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UNITED

STATES

SECURITIES

AND EXCHANGE COMMISSION

Washington,

D.C. 20549

FORM

8-K

CURRENT

REPORT

PURSUANT

TO SECTION 13 OR 15(d) OF THE

SECURITIES

EXCHANGE ACT OF 1934

Date

of Report (Date of Earliest Event Reported): March 31, 2026

PROTAGENIC

THERAPEUTICS, INC.

(Exact

name of Company as specified in its charter)

Protagenic

Therapeutics, Inc.\new

Delaware

001-12555

06-1390025

(State

or other jurisdiction

incorporation)

(Commission

File

Number)

(I.R.S.

Employer

Identification

No.)

149

Fifth Avenue, Suite 500, New York, NY

10010

(Address

of principal executive offices)

(Zip

Code)

212-994-8200

(Company’s

telephone number, including area code)

(Former

name or former address, if changed since last report)

Check

the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the Company under any

of the following provisions:

☐

Written

communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐

Soliciting

material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐

Pre-commencement

communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐

Pre-commencement

communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities

registered pursuant to Section 12(b) of the Act:

Title

of each class

Trading

Symbol(s)

Name

of each exchange on which registered

Protagenic

Therapeutics, Inc. Common Stock

PTIX

OTC

Markets

Protagenic

Therapeutics, Inc. Common Stock Warrants

PTIXW

OTC

Markets

Indicate

by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 or Rule 12b-2

of the Securities Exchange Act of 1934.

Emerging

growth company ☐

an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying

with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item

5.02. Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of

Certain Officers.

March 31, 2026, the Board of Directors of Protagenic Therapeutics, Inc. (the “Company”) notified Alexander Arrow, MD, the

Company’s Chief Financial Officer, that his employment with the Company will be terminated effective April 30, 2026.

SIGNATURES

Pursuant

to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by

the undersigned hereunto duly authorized.

PROTAGENIC

THERAPEUTICS, INC.

Date:

April 6, 2026

By:

/s/

Garo H. Armen

Name:

Garo

H. Armen

Title:

Executive

Chairman

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Entity Address, Address Line Two

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Entity Address, City or Town

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