Waystar Holding Corporation.

WAY·NASDAQ·$19.72Share Price as of 11/2·$4BMarket Cap as of 11/2

Financials

10-QQ2 ended 06/30/2607/29/26 10-QQ1 ended 03/31/2604/29/26 10-KFY 202502/17/26 10-QQ3 ended 09/30/2510/29/25 10-QQ2 ended 06/30/2507/30/25

Disclosures

8-KCurrent report07/29/26 8-KCurrent report06/04/26 8-KCurrent report04/29/26 8-KCurrent report02/17/26 8-KCurrent report02/06/26

Prospectuses and Registrations

424B7Prospectus09/11/25 FWPFree writing prospectus09/10/25 S-3ASRAutomatic shelf registration07/14/25 424B7Prospectus05/15/25 S-1Registration statement (IPO)05/13/25

Proxies

DEF 14ADefinitive proxy04/17/26 DEFA14AAdditional proxy materials04/17/26 DEFA14AAdditional proxy materials05/12/25 DEF 14ADefinitive proxy04/29/25 PRE 14APreliminary proxy04/17/25

Ownership

Form 4Insider transaction10/26/26 Form 4Insider transaction10/07/26 144Proposed sale of securities10/06/26 Form 4Insider transaction10/06/26 4/AInsider transaction (amended)09/25/26

Other

DD10/10/25 EFFECTRequest for effectiveness05/14/25 CORRESPCorrespondence with the SEC05/13/25 ARSAnnual report to shareholders04/29/25 UPLOADLetter from the SEC04/25/25