PTIX PROTAGENIC THERAPEUTICS INC Capital Structure Changes 8-K Filing 2025 - Warrant Exchange On May 20, 2025, Protagenic Therapeutics, Inc. executed a Warrant Exchange Agreement to cancel 459,420 warrants in exchange for issuing 367,544 shares of common stock. This agreement helps in restructuring the company's agreements with investors.Get access to all SEC 8-K filings of the PROTAGENIC THERAPEUTICS INC