PTIX PROTAGENIC THERAPEUTICS INC Capital Structure Changes 8-K Filing 2025 - Stock Offering Protagenic Therapeutics, Inc. has amended its sales agreement with B. Riley Securities to potentially sell up to $1,200,000 worth of common stock at market prices, with a 3% commission for the agent.Get access to all SEC 8-K filings of the PROTAGENIC THERAPEUTICS INC