Signal8

Signal8 tracks SEC filings, dilution (warrants, convertibles, ATMs, shelf capacity, cash runway), insider and congressional trades, trading halts and reverse splits for US-listed stocks. Use it on the web, through the API, or from AI assistants via the Signal8 MCP server.

Free tier available. Signal8 Pro is $59/month and includes dilution snapshots, the API and the Terminal. API docs: https://signal8.ai/developer/docs. MCP server: https://signal8.ai/mcp.