| payload |
{"created_at":"2026-04-15T02:18:53.247 {"created_at":"2026-04-15T02:18:53.247056+00:00","signal_type":"discovery_sec_filing_delta","source":"discovery_sec_filings","url":"https://www.sec.gov/Archives/edgar/data/1289945/0001757839-26-000004.txt","value":{"company":"Spok Holdings, Inc","form_type":"4","fp":"0f09ee73266ef553","kind":"sec_filing","published_at":"20260414","source":"sec_edgar","summary":"Form 4 \u00b7 Spok Holdings, Inc \u00b7 Filed 20260414","ticker":"SPOK","tickers":["SPOK"],"title":"SPOK filed 4","url":"https://www.sec.gov/Archives/edgar/data/1289945/0001757839-26-000004.txt"}}... |